Water dispensing device

Abstract

A water dispensing device according to the present invention comprises: a body unit having a space unit formed therein, and having an at least partially opened front surface; an ice-making tray disposed inside the body unit and filled with purified water for making ice; an ice bank disposed inside the body unit and disposed below the ice-making tray to store ice separated from the ice-making tray; an auger disposed inside the ice bank to transfer the ice to the outside of the ice bank while rotating; a compressor; a condenser; an expansion valve; an ice-making evaporator into which a refrigerant having passed through the expansion valve is introduced, and which is provided to cool the purified water filled in the ice-making tray; and a freezing evaporator into which the refrigerant having passed through the expansion valve is introduced, and which is provided to store the ice, stored in the ice bank, in a frozen state.

Description

Water discharge device

[0001] The present invention relates to a water extraction device having an ice-making means, and more specifically, to a water extraction device capable of storing ice produced in a frozen state.

[0002] A water dispenser is a device that supplies beverages, purified water, etc.

[0003] An example of a water purifier is a water purifier, which is a device that physically and chemically filters out harmful elements such as foreign substances and heavy metals contained in water. To this end, a typical water purifier largely includes a filter unit that filters out contaminants from raw water containing contaminants, and an outlet unit that extracts purified water that has passed through the filter unit. When power is supplied to such a water purifier, raw water is supplied to the filter unit and purified, and the purified purified water is extracted through the outlet unit according to the user's choice.

[0004] Furthermore, in addition to simply purifying raw water, some purifiers also offer cooling and heating functions, providing cold and hot water by cooling or heating the purified water. Furthermore, water purifiers capable of providing ice in addition to cold and hot water, including ice-making devices, have been developed. These cooling and ice-making functions require a cooling device to cool the water passing through the filter.

[0005] Cooling devices used in water purifiers include thermoelectric elements or refrigerant compression cycle devices used in general refrigerators, and refrigerant compression cycle devices are widely used due to issues such as power consumption and cooling capacity.

[0006] Referring to prior art document 1 (Korean Patent No. 10-1602236), a conventional water purifier with an ice-making function includes a water purification tank in which purified water, after being filtered of foreign substances, is stored. Furthermore, separate from the water purification tank, an ice-making tray is provided for temporarily storing water used to make ice, and a cold water tank is provided for storing cold water cooled by the ice-making tray.

[0007] And, an evaporator is provided adjacent to the ice-making tray, and a compressor, a condenser, and a capillary tube, which form a refrigerant compression cycle device together with the evaporator, are respectively provided. In addition, an ice bank for storing the ice produced is provided below the ice-making tray. The ice bank is arranged together with the ice-making tray within a single insulated space.

[0008] A water purifier having a conventional ice-making means having a structure as described above stores ice produced in an ice-making tray in the ice bank, and moves water remaining in the ice-making tray to the cold water tank to supply cold water to a user.

[0009] Meanwhile, the evaporator is a so-called submerged evaporator, which has fingers that come into direct contact with the cold water filled in the ice tray. The submerged evaporator has been used as an ice-making means in water purifiers for a long time due to its simple structure and low production cost. Recently, an ice-making means that controls the compressor using an inverter has been used for the purpose of improving ice-making efficiency, reducing power consumption, and shortening ice-making time.

[0010] The conventional ice purifier as described above uses a three-way valve to open the cold water side valve when producing cold water, and to open the ice-making side valve when making ice.

[0011] However, the conventional ice purifier as described above has a problem in that after completing ice making, the compressor is stopped and the ice removing heater is operated to remove the ice, so the number of times the compressor is turned on / off is large, resulting in high energy consumption, and the waiting time for turning the compressor on / off is generated, resulting in a decrease in the ice making amount (kg / day).

[0012] Additionally, there were problems such as ice stored in an ice storage after being frozen melting over time, the size and amount of ice decreasing, and water being generated as the ice melted.

[0013] In detail, the conventional ice purifier as described above had the following problems when storing frozen ice because it did not store the stored ice under sub-zero temperature conditions.

[0014] First, after freezing, the frozen ice was stored at room temperature and melted during storage.

[0015] And, as the ice melted, there was a problem that the size of the ice supplied to the user was not consistent during ice extraction, and each shape was different.

[0016] For example, there were problems such as broken ice, small ice, and ice that melted easily being extracted.

[0017] Additionally, as the ice melts, water is created, and the water created as the ice melts is drained or used as cold water.

[0018] Additionally, there was a problem of low efficiency because new ice had to be created every time the ice melted.

[0019] Additionally, storing ice at room temperature can cause hygiene problems inside the ice storage.

[0020] That is, there was a problem of poor hygiene as the phenomenon of ice being created and melting repeatedly at room temperature, and the temperature change and water circulation structure inside the ice storage, created a possibility of bacteria and mold growing inside the ice storage.

[0021] Furthermore, existing ice purifiers utilize a finger-type evaporator to complete ice production. During the ice-removal process, the ice tray rotates, discharging any remaining water into the ice storage located below. If this water drips onto the ice stored in the ice bank, the quality of the ice can deteriorate.

[0022] In detail, in the case of an ice purifier that sets the internal temperature of the ice bank below zero for the purpose of long-term storage of ice, the remaining water that falls due to the operation freezes instantaneously with the ice, causing the ice to stick together and clump together, which causes poor ice discharge and ultimately causes poor ice quality and errors in operation.

[0023] Referring to prior art document 2 (Korean Patent No. 10-1631218), in the case of a conventional ice maker, an ice guide grill is provided at the bottom of the ice tray to separate the ice remaining water and the separated ice when discarding the remaining water from the ice tray.

[0024] However, in the case of the ice guide grill of the above ice maker, if the size of the frozen ice does not match the spacing between the ribs of the grill, the ice may get caught between the ribs as it falls into the storage, and if the internal temperature of the ice room and storage is below zero, water condensation may occur between the ribs of the grill, causing ice to form, which may result in malfunction.

[0025] In the case of a conventional ice tray, it is connected to a motor through a coupler and a clutch, and the surface where the coupler and the clutch are combined is formed to be radially inclined, and a curved surface is formed along the edge.

[0026] In the above case, if the ice bank containing ice is maintained at a freezing temperature, the spring provided in the rotation unit may not operate smoothly.

[0027] Additionally, during the ice-making stage, water may flow into the ice bank where ice is stored because the ice-making residual water is not structured to be collected and flow to one side.

[0028] And, as mentioned above, if water flows into the ice bank where ice is stored and falls, the problem of ice sticking together when stored in a freezer occurs.

[0029] Additionally, the ice inside the ice bank is transported outside through an auger.

[0030] The above auger is placed on the inside of the ice bank.

[0031] Additionally, when the auger operates to transport ice, problems such as cracks, breaks, or noises may occur in the auger's wings or shaft. Furthermore, if the auger's wings or shaft break and fragments enter the ice, the user may end up ingesting these fragments along with the ice.

[0032] The purpose of the present invention is to provide a water discharge device having a refrigeration system capable of performing at least one function selected from among cold water production, ice production, ice deicing, and ice freezing storage using refrigerant discharged from one compressor.

[0033] The purpose of the present invention is to provide a water extraction device that can store ice at sub-zero temperatures without melting the ice and without heat energy used for de-icing flowing into the ice storage space even when de-icing is in progress, thereby allowing the ice to be stored at sub-zero temperatures.

[0034] The purpose of the present invention is to provide a water extraction device that can easily separate and install an auger without using separate parts.

[0035] The purpose of the present invention is to provide a water extraction device that can easily separate an auger from a motor rotational shaft when an ice bank is to be separated, so that the ice bank and auger can be removed simultaneously, and even when the ice bank and auger are installed, the auger shaft can be easily connected to the motor rotational shaft simply by pressing a shaft coupling member.

[0036] The purpose of the present invention is to provide a water extraction device that can prevent an accident in which a user eats a portion of the broken fragments by increasing the strength of the auger and causing the broken fragments to flow into the ice when a portion of the auger breaks.

[0037] The purpose of the present invention is to provide a water extraction device that allows a user to more easily separate and move an ice bank by holding a handle.

[0038] The purpose of the present invention is to provide a water dispensing device that can hygienically manage an ice bank by using a handle portion so that the hand does not come into contact with the ice bank.

[0039] A water extraction device according to one embodiment of the present invention comprises a body part having a space formed inside and at least a portion of a front surface being open, an ice tray disposed inside the body part and filled with purified water for ice making, an ice bank disposed inside the body part and lower than the ice tray, where ice separated from the ice tray is stored, and an auger disposed inside the ice bank and rotating to transport ice to the outside of the ice bank.

[0040] In addition, it includes a compressor, a condenser, an expansion valve, and an ice-making evaporator into which refrigerant passing through the expansion valve is introduced and which is provided for cooling purified water filled in the ice-making tray, and a freezing evaporator into which refrigerant passing through the expansion valve is introduced and which is provided for freezing ice stored in the ice bank.

[0041] In addition, the bottom surface of the ice bank may be formed to slope downward from the front to the rear, and the auger may be arranged to slope downward from the front to the rear along the bottom surface of the ice bank.

[0042] In addition, a fan bracket to which an evaporator fan is fixed is arranged at the rear of the ice bank, and one side of the auger can be rotatably connected to the fan bracket by penetrating the ice bank.

[0043] In addition, the auger may be connected to the rotational axis of the motor to form a rotating auger shaft, and a first shaft member may be formed on the inside of the auger shaft.

[0044] In addition, the auger shaft includes a second shaft member covering the first shaft member, and the strength of the first shaft member can be formed to be higher than the strength of the second shaft member.

[0045] Additionally, the first axis member may be made of a metal material.

[0046] In addition, the auger includes a shaft cover covering the outside of the auger shaft and a wing member including a screw-shaped wing portion extending outside the shaft cover, and the shaft cover and the wing portion can be formed integrally.

[0047] Additionally, the first shaft member, the second shaft member, and the wing portion can be formed by double injection molding.

[0048] Additionally, it may include at least one shaft coupling member connecting the auger shaft and the rotational shaft of the motor.

[0049] In addition, the shaft coupling member may include a third shaft coupling member that forms a third shaft coupling groove into which the rotation shaft of the motor is fitted, and forms a third shaft coupling protrusion on the other side.

[0050] Additionally, a first shaft coupling groove may be formed on one side of the above-mentioned shaft to be concave inward in the axial direction.

[0051] In addition, the shaft coupling member may include a second shaft coupling member having a second shaft coupling groove formed on one side into which the third shaft coupling protrusion is fitted, and a second shaft coupling protrusion formed on the other side into which the second shaft coupling protrusion is fitted into the first shaft coupling groove.

[0052] Additionally, the second axis coupling protrusion (142c) can form a protrusion groove that is concavely formed inward.

[0053] In addition, the first axis coupling groove may have a coupling protrusion extending from the inner bottom surface of the first axis coupling groove and positioned at the center of the first axis coupling groove.

[0054] Additionally, at least a portion of the coupling protrusion can be accommodated in the protrusion groove.

[0055] Additionally, an elastic member that provides a force to push the second shaft coupling member out of the auger shaft may be inserted between the protrusion groove and the first shaft coupling groove.

[0056] Additionally, a fixed hook protruding outward may be formed on one end of the second shaft coupling protrusion of the second shaft coupling member.

[0057] Additionally, in the second axis coupling member, a slit having a predetermined width can be formed on both sides of the fixed hook.

[0058] In addition, a hook hole may be formed in the auger shaft so that the fixed hook is fitted and connected when the second shaft coupling protrusion is fitted into the first shaft coupling groove.

[0059] In addition, a first shaft joint having an expanded diameter or thickness may be formed on one end of the second shaft member adjacent to the rotational axis of the motor to reinforce strength.

[0060] According to the present invention as described above, even if the ice water purifier is miniaturized, there is an advantage in that ice-making performance can be secured.

[0061] Additionally, there is an advantage in that the ice bank where the ice is stored is kept below freezing, preventing the ice that is created from melting.

[0062] Additionally, there is the advantage of providing users with improved quality ice that is firmer and lasts longer as it is stored at sub-zero temperatures.

[0063] Additionally, there is the advantage of being able to easily disassemble and install the auger without using separate parts.

[0064] In addition, when the ice bank is to be separated, the auger can be easily separated from the motor's rotational shaft, so that the ice bank and auger can be removed at the same time. Also, when the ice bank and auger are to be installed, there is an advantage in that the auger shaft can be easily connected to the motor's rotational shaft simply by pressing the shaft coupling member.

[0065] Additionally, increasing the strength of the auger has the advantage of preventing accidents where parts of the auger break and the broken pieces enter the ice, causing the user to eat some of the pieces.

[0066] Additionally, the user has the advantage of being able to hold the handle and detach and move the ice bank more easily.

[0067] Additionally, there is an advantage in being able to maintain the ice bank hygienically because the handle does not allow your hands to come into contact with the ice bank.

[0068] Figure 1 is a perspective view of a water extraction device according to one embodiment of the present invention.

[0069] Figure 2 is a drawing showing an embodiment of a refrigeration cycle applied to the water extraction device of the present invention.

[0070] Figure 3 is a perspective view of an ice-making unit, which is a component of the present invention.

[0071] Figure 4 is a perspective view showing the cover portion separated from Figure 3.

[0072] Figure 5 is a longitudinal cross-sectional view of Figure 4.

[0073] Figure 6 is an exploded perspective view of an ice-making unit, which is a component of the present invention.

[0074] Figure 7 is an exploded perspective view of the dispenser unit, which is a component of the present invention.

[0075] Figure 8 is a side view of a longitudinal cross-section of an ice making unit according to one embodiment of the present invention.

[0076] FIG. 9 is a drawing of the interior of an ice making unit according to one embodiment of the present invention viewed from above.

[0077] Figure 10 is a cross-sectional view of the outlet and body viewed from the side with the door closed.

[0078] Figure 11 is a cross-sectional view of the outlet and body viewed from the side with the door open.

[0079] Figure 12 is a perspective view of an auger, which is a main component of the present invention.

[0080] Figure 13 is an exploded perspective view of an auger, which is a main component of the present invention.

[0081] Figure 14 is a perspective view of the second shaft coupling member, which is a main component of the present invention.

[0082] Fig. 15 is a perspective view showing one side of the auger shaft, which is a main component of the present invention.

[0083] Figure 16 is a cross-sectional view from the side of the main components of the present invention, the ice bank and the auger, combined.

[0084] Figure 17 is a plan view from above of the ice bank and auger, which are the main components of the present invention, combined.

[0085] Figure 18 is a plan view of the wing member, which is the main component of the present invention, viewed from above.

[0086] Hereinafter, specific embodiments of the present invention will be described in detail with reference to the drawings. However, the spirit of the present invention is not limited to the embodiments presented below, and those skilled in the art who understand the spirit of the present invention will be able to easily implement other embodiments within the scope of the same spirit by adding, modifying, deleting, or adding components, and such embodiments will also be considered to be within the scope of the present invention.

[0087] The ice extraction device of the present invention is a water extraction device capable of generating ice, and is characterized by implementing a refrigeration cycle so that the generated ice can be stored without melting.

[0088] Existing ice water purifiers have a structure in which water circulates at room temperature, so the ice produced is also stored at room temperature, which has the problem of hygienic problems such as mold growth, and the problem of ice quality deteriorating as melted ice is extracted.

[0089] The present invention has a feature that the ice produced can be stored in a frozen state so that the ice does not melt.

[0090] Fig. 1 is a perspective view of a water extraction device according to one embodiment of the present invention. Fig. 2 is a drawing showing one embodiment of a refrigeration cycle applied to the water extraction device of the present invention.

[0091] The water extraction device according to the present invention is for extracting water supplied from an external water source immediately after purification, or extracting it after cooling or heating it, and may mean, for example, a direct water extraction device.

[0092] Here, a direct-type water extraction device refers to a water extraction device that does not have a reservoir for storing purified water, but rather a device in which water passes through a filter in real time and purified water is extracted when a user requests purified water extraction.

[0093] In addition, the water extraction device according to the present invention may refer to a refrigerator having a water extraction device function. That is, it may refer to a water extraction device refrigerator that is a refrigerator and has a filter for purifying raw water and a water extraction nozzle through which purified water is extracted.

[0094] In addition, the water outlet device according to the present invention may mean an under-sink type water outlet device in which the main body is installed under the sink and the water outlet nozzle is installed on the outside of the sink.

[0095] In addition, the water discharging device according to the present invention may refer to various types of known devices that receive water from a water source, purify it by passing it through a filter, and then supply it to the outside.

[0096] Referring to FIGS. 1 and 2, a water treatment device according to one embodiment of the present invention includes a main body (10) and a water discharge nozzle (30) coupled to the main body (10) and supplying water downward.

[0097] The above main body (10) is formed to be concave toward the rear at the lower part of the front, and forms a water outlet space (11) in which a container for supplying water and ice is placed.

[0098] That is, the main body (10) forms a water outlet (20) protruding forward at the upper part of the front.

[0099] And, the above-mentioned water discharge nozzle (30) is installed at the lower end of the water discharge portion (20) defining the upper surface of the water discharge space (11).

[0100] In addition, the above-mentioned water outlet (20) may be equipped with various buttons (40). In detail, a purified water / hot water / cold water selection button, a water outlet button, an ice selection button, an ice extraction button, etc. may be equipped.

[0101] At least one filter is arranged inside the main body (10), and purified water passing through the filter can be supplied to the user through the water outlet nozzle (30). A purified water path that guides purified water passing through the filter toward the water outlet nozzle (30) can be arranged inside the main body (10).

[0102] In addition, purified water passing through the filter can be supplied to the water outlet nozzle (30) in the form of cold water or hot water after being cooled or heated.

[0103] To this end, a hot water tank for heating purified water passing through the filter and a hot water path for guiding the heated hot water in the hot water tank toward the water outlet nozzle (30) may be arranged inside the main body (10). For example, the hot water tank may generate hot water by instantaneously heating purified water passing through the hot water tank using an induction heating (IH) method.

[0104] In addition, the hot water tank may be equipped with a thermoelectric element or a heating wire to heat purified water passing through the hot water tank into hot water.

[0105] In addition, instead of the above induction heating method, various heating methods can be applied within the range where purified water passing through the above hot water tank can be heated into hot water.

[0106] In addition, a cooling tank for cooling purified water passing through the filter and a cold water path for guiding the cold water cooled in the cooling tank toward the water outlet nozzle (30) may be arranged inside the main body (10). For example, the cooling tank may be equipped with a compressor, an evaporator, a condenser, a cooling fan, etc., so that purified water passing through the cooling tank can be cooled with cold water. In addition, the cooling tank may be equipped with a thermoelectric element, so that purified water passing through the cooling tank can be cooled with cold water.

[0107] In addition, instead of the above evaporator, various cooling devices can be applied within the range of being able to cool the purified water passing through the cooling tank with cold water.

[0108] In addition, an ice-making means may be provided on the inside of the main body (10) to cool the purified water that has passed through the filter or the cold water cooled in the cooling tank to create ice.

[0109] In addition, the ice produced by the ice making means is stored under sub-zero temperature conditions where the ice does not melt, and can be supplied to the user through the water outlet nozzle (30) or an outlet (50) provided separately from the water outlet nozzle (30).

[0110] Fig. 3 is a perspective view of an ice-making unit, which is a component of the present invention. Fig. 4 is a perspective view showing the cover unit of Fig. 3 separated. Fig. 5 is a longitudinal cross-sectional view of Fig. 4. Fig. 6 is an exploded perspective view of an ice-making unit, which is a component of the present invention.

[0111] Hereinafter, the ice making means will be described in more detail with reference to the above drawings.

[0112] The above ice making means (100) includes an ice making unit (110), a dispenser unit (150), and a cover unit (102).

[0113] First, the ice making means (100) includes an ice making unit (110).

[0114] For reference, the above ice making unit (110) is configured to include a body unit (101) and a cover unit (102) described later.

[0115] The body part (101) and cover part (102) described below can be understood as a housing that forms the exterior of the ice making part (110).

[0116] The above ice-making unit (110) is surrounded by insulating material to secure an insulated space. An ice-making tray (120) is installed in the insulated space formed inside the ice-making unit (110) to temporarily store water to be used for ice-making. Specifically, the ice-making tray (120) is mounted on a driving motor and a rotational shaft, and is mounted so as to be rotatable around the rotational shaft.

[0117] Accordingly, when the ice tray (120) is rotated, the contents such as water and ice contained inside the ice tray (120) fall to the lower side of the ice tray (120). An ice bank (130) is provided so that the falling ice and water can be fed. The ice bank (130) has an opening formed at the top, through which the water and ice that fall from the ice tray (120) can enter the interior of the ice bank (130).

[0118] For reference, at this time, the water and ice that fell from the ice tray (120) are separated, the ice is stored in the ice bank (130), and the water can be drained through a separate path.

[0119] The ice bank (130) above is equipped with an auger (140) that rotates in one direction and pushes ice outward, and an ice discharge guide (158) is positioned on the outlet side of the auger (140). The ice discharge guide (158) is connected to the interior of the discharge port (50) described above, so that ice discharged by the operation of the auger (140) can be delivered to the user from the discharge port (50).

[0120] The bottom surface of the ice bank (130) is made of a water-permeable material, or is configured so that a plurality of permeable holes are formed so that the supplied water can pass through the bottom surface of the ice bank (130) and flow out downward. The water thus flowed out passes through the passage hole (131) of the ice bank (130), and the water passing through the passage hole (131) is discharged through a separate drain hole formed at the lowest end of the bottom surface of the inner cover (111), and the discharged water can be stored in a separate residual water storage tank or drained to the outside through a separate drain pipe.

[0121] Here, the drain pipe may also be equipped with a pump for drainage, or an external pump may be connected to the drain pipe to perform drainage.

[0122] Meanwhile, the ice-making means (100) includes a refrigerant compression cycle device (200) to freeze water supplied to the ice-making tray (120) or cool water in the cold water tank. Specifically, the refrigerant compression cycle device (200) includes a compressor (210), a condenser (220), a dryer (230), an expansion valve (240), an evaporator (250), and an accumulator. Since the operating principles of each component are known from the prior art, a detailed description thereof will be omitted.

[0123] The refrigerant passing through the compressor (210) is supplied for at least one of the following uses.

[0124] First, the refrigerant passing through the compressor (210) can be supplied to a cold water evaporator provided in the cold water tank to lower the temperature of the cooling water or cold water in the cold water tank.

[0125] Additionally, the refrigerant passing through the compressor (210) can be supplied to an ice evaporator placed on the side of the ice tray to freeze water contained in the ice tray.

[0126] Additionally, the refrigerant passing through the compressor (210) may be supplied to an ice evaporator or a separate heat exchanger placed on the ice tray side to freeze the ice generated in the ice tray.

[0127] Additionally, the refrigerant that has passed through the compressor (210) can be supplied to a freezing evaporator placed on one side of the ice storage space so that the ice separated from the ice tray is stored at sub-zero temperature conditions.

[0128] The above evaporator (250) may be provided in multiple numbers. The above evaporator (250) may be divided into an evaporator for generating cold water, an evaporator for generating ice, and an evaporator for storing ice.

[0129] In addition, the evaporator (250) can perform multiple functions selected from among cold water cooling, ice making, and ice storage, and each evaporator can individually perform the functions of cold water cooling, ice making, and ice storage.

[0130] In addition, when a plurality of evaporators (250) are provided as described above, a plurality of refrigerant pipes may be provided to transfer the refrigerant passing through the dryer (230) to each evaporator (250).

[0131] The above refrigerant pipe may refer to a single pipe, path, etc. through which the refrigerant flows, and may also refer to a plurality of separate pipes, paths, etc. for connection to other devices such as an evaporator or capillary tube.

[0132] In the following description, it is described that the refrigerant that has passed through the condenser and the dryer in sequence flows to the refrigerant valve, but the scope of the present invention is not limited to this, and it is to be noted in advance that the refrigerant that has passed through the condenser may flow directly to the refrigerant valve without passing through the dryer.

[0133] And, each of the above refrigerant pipes may be connected in parallel, or at least some of the refrigerant pipes may be connected in series.

[0134] That is, multiple evaporators may be connected in parallel, or at least some of the evaporators may be connected in series.

[0135] And, when each of the above refrigerant pipes is connected in parallel or series, a refrigerant valve for transmitting or blocking refrigerant to each refrigerant pipe may be provided.

[0136] In a refrigeration cycle where refrigerant discharged from a compressor is returned to the compressor, when one component is said to be connected "in series" with another component, it means that the two components are connected in series so that the refrigerant flowing from one component continues to the other. There may be components between the two series-connected components that form a passage for the refrigerant to flow, such as refrigerant pipes or expansion valves.

[0137] In addition, when it is said that a component is connected “in parallel” with another component in a flow path through which refrigerant discharged from a compressor flows, it means that the flow path connected to one component and the flow path connected to the other component branch off from the upstream side of the two components and join together from the downstream side of the two components based on the flow direction of the refrigerant. The flow path may be implemented as a component in which a passage through which refrigerant flows is formed, such as a refrigerant pipe or an expansion valve, and components such as valves and connecting pipes may be arranged at the points where the flow paths branch off and join together. Hereinafter, a refrigerant cycle according to various embodiments will be described with reference to the drawings.

[0138] Referring again to FIG. 2, the evaporator (250) includes a cold water evaporator (251) for generating cold water, an ice evaporator (252) arranged on the side of the ice tray (120) for making ice, and a freezing evaporator (253) for supplying cold air to prevent ice stored in the ice bank (130) from melting.

[0139] The refrigerant that has passed through the compressor (210) passes through the condenser (220) and the dryer (230) and then flows into the refrigerant valve (270). For reference, a condenser fan (280) may be installed on one side of the condenser (220) to dissipate heat from the condenser.

[0140] And, the refrigerant introduced into the refrigerant valve (270) can flow into the first refrigerant pipe (291) or the second refrigerant pipe (292).

[0141] Additionally, the refrigerant introduced into the refrigerant valve (270) may flow into the fourth refrigerant pipe (294) to supply hot gas to the ice evaporator (252).

[0142] For example, the refrigerant valve (270) may be provided as a 4-way valve having one inlet and three outlets, and capable of individually opening and closing each inlet and outlet and controlling the degree of opening.

[0143] For reference, the above refrigerant valve (270) may be configured as a single four-way valve, or may be configured using multiple three-way valves, etc. In addition, a refrigerant valve may be individually installed in each refrigerant pipe (291, 292, 294).

[0144] First, the refrigerant flowing through the first refrigerant pipe (291) passes through the first expansion valve (241) and then flows to the cold water evaporator (251).

[0145] And, the cold water evaporator (251) cools the water in the cold water tank into cold water through heat exchange with purified water passing through the cold water tank.

[0146] The refrigerant that has passed through the above cold water evaporator (251) flows back to the compressor (210).

[0147] Meanwhile, the refrigerant flowing through the second refrigerant pipe (292) passes through the second expansion valve (242) and then flows to the ice evaporator (252).

[0148] And, the refrigerant introduced into the ice evaporator (252) exchanges heat with the water contained in the ice tray (120) to freeze the water into ice.

[0149] In the above embodiment, the ice evaporator (252) has a plurality of fingers (252a) that are immersed at one end in water supplied to the ice tray (120). Therefore, when cold refrigerant flows inside the ice evaporator (252), water in contact with the surrounding area freezes, causing ice to gradually grow.

[0150] In order to separate the ice grown around the ice evaporator (252), a separate ice separating means may be provided on one side of the ice evaporator (252).

[0151] For example, in order to separate ice grown around the ice evaporator (252), the high-temperature refrigerant that has passed through the compressor (210) can be supplied directly to the ice evaporator (252) by bypassing the second refrigerant pipe (292). For this purpose, a fourth refrigerant pipe (294) is provided.

[0152] The fourth refrigerant pipe (294) connects the refrigerant valve (270) and the ice evaporator (252). The fourth refrigerant pipe (240) bypasses the second refrigerant pipe (292) and connects the refrigerant valve (270) and the ice evaporator (252).

[0153] Therefore, in an ice-making situation, the refrigerant of the refrigerant valve (270) flows to the second refrigerant pipe (292), and in an ice-breaking situation, the refrigerant of the refrigerant valve (270) flows to the fourth refrigerant pipe (294).

[0154] That is, in an ice-breaking situation, the high-temperature refrigerant (hot gas) introduced into the refrigerant valve (270) is supplied to the ice-making evaporator (252) through the fourth refrigerant pipe (294) to melt the ice stuck to the ice-making evaporator (252) and cause ice-breaking. As described above, the refrigerant that provides the heat necessary for ice-breaking while passing through the ice-making evaporator (252) can flow to the compressor (210) via the freezing evaporator (253).

[0155] However, when the high-temperature refrigerant flows to the freezing evaporator (253) during the freezing process as described above, if the evaporator fan (260) operates, high-temperature air is supplied to the ice bank (130), and the temperature of the ice bank (130) rises to zero, causing a problem in which the ice melts.

[0156] Accordingly, in an ice-making situation where high-temperature refrigerant is supplied to the ice-making evaporator (252) and the freezing evaporator (253) as described above, the evaporator fan (260) can be controlled to stop operating or to have a rotation speed lower than that in the cooling mode.

[0157] Additionally, in an ice-making situation where high-temperature refrigerant is supplied to the ice-making evaporator (252) and the freezing evaporator (253), the condenser fan (280) may also be controlled to stop operating or have a rotation speed lowered compared to the cooling mode.

[0158] In general, high temperature, high pressure gas discharged from the compressor passes through a condenser (220) and is converted into high temperature, high pressure liquid.

[0159] In the present embodiment, when ice is removed, the operation of the condenser fan (280) is stopped or controlled to rotate at a low speed, so that the refrigerant passing through the condenser (220) can reach the ice-making evaporator (252) in a gaseous state.

[0160] In the present embodiment, a forced convection condenser (220) may be used as a type of condenser. In the case of a forced convection condenser, since air is circulated through a condenser fan (280) to condense the refrigerant, if the condenser fan (280) stops operating, the condensation performance deteriorates. Therefore, if the condenser fan (280) stops operating, the refrigerant may remain in a gaseous state even if it passes through the condenser (220).

[0161] Meanwhile, it is also possible to consider providing a separate electric heater or other means of moving.

[0162] In addition, in the above-described ice-making situation, even if the operation of the evaporator fan is stopped or the rotation speed of the evaporator fan is controlled to a low speed, if ice-making proceeds in a situation where the temperature of the space where ice is stored is not secured, the problem of the ice being stored melting may also occur as the temperature of the ice storage space increases due to the heat source supplied to the ice-making evaporator (252) for ice-making.

[0163] In particular, in the case of a structure in which the ice-making evaporator and the freezing evaporator are connected in series, the temperature of the ice storage space cannot help but rise due to the hot gas flowing through the ice-making evaporator and the freezing evaporator during ice removal.

[0164] Accordingly, when a condition is met that the temperature of the space where ice is stored is below a preset temperature (e.g., -11°C), control can be performed to perform an ice-making operation by supplying hot gas, etc.

[0165] In this embodiment, the refrigerant passing through the ice evaporator (252) flows to the freezing evaporator (253).

[0166] That is, both the ice-making evaporator (252) and the freezing evaporator (253) are installed in the second refrigerant pipe (292), the ice-making evaporator (252) and the freezing evaporator (253) are connected in series, and the ice-making evaporator (252) is located upstream of the freezing evaporator (253) based on the flow direction of the refrigerant.

[0167] In addition, the refrigeration evaporator (253) supplies cold air to prevent the ice stored in the ice bank (130) from melting. In order to supply cold air toward the ice bank (130) as described above, an evaporator fan (260) that forms a discharge airflow toward the ice bank (130) may be formed on one side of the refrigeration evaporator (253).

[0168] As described above, the refrigerant that passes through the ice evaporator (252) and the freezing evaporator (253) in sequence flows back to the compressor (210).

[0169] In the various embodiments described above, the ice bank (130) can be maintained at a temperature at which ice does not melt by the refrigeration evaporator (253) and the evaporator fan (260).

[0170] The present invention as described above can implement cold water generation, ice making, and ice removal in one refrigerant cycle.

[0171] To this end, a 4-way refrigerant valve (270) is installed at the rear end of the dryer (230), so that the refrigerant passing through the dryer (230) can be delivered to the first refrigerant pipe (291) for cold water production, to the second refrigerant pipe (292) for ice production and frozen storage, or to the fourth refrigerant pipe (294) for ice removal.

[0172] In detail, in a situation where cold water generation is required, the refrigerant valve (270) opens the outlet side of the first refrigerant pipe (291) to discharge the refrigerant to the first expansion valve (241) and the cold water evaporator (251).

[0173] Meanwhile, in a situation where ice making is required, the refrigerant valve (270) opens the outlet of the second refrigerant pipe (292) to discharge the refrigerant through the second expansion valve (242). Then, the refrigerant passing through the second expansion valve (242) passes through the ice-making evaporator (252) to create ice, and passes through the freezing evaporator (253) to create cold air to prevent the frozen ice from melting.

[0174] In addition, in a situation where cold water generation and ice making are required at the same time, the refrigerant valve (270) can open both the outlet on the first refrigerant pipe (291) side and the outlet on the second refrigerant pipe (292) side to generate cold water and also generate ice.

[0175] Meanwhile, in a situation where ice removal is required after ice making is completed, the refrigerant valve (270) opens the outlet of the fourth refrigerant pipe (294), supplies the hot refrigerant (hot gas) that has passed through the condenser to the ice making evaporator (252), and melts and separates the ice from the fingers (252a) of the ice making evaporator (252).

[0176] In addition, when the ice-making process is completed, the refrigerant valve (270) opens the outlet of the second refrigerant pipe (292), thereby generating ice or generating cold air to prevent the ice-making ice from melting. In the case of the present invention as described above, the refrigerant cycle is implemented so that the ice produced in the ice purifier does not melt and is stored under sub-zero temperature conditions.

[0177] Conventional ice water purifiers do not have a separate refrigerant cycle to store ice at sub-zero temperatures.

[0178] In the present invention, a refrigerant cycle for storing ice at sub-zero temperatures is established so that ice can be stored in a frozen state without melting even after ice making and ice removal.

[0179] The refrigerating evaporator (253) used in the present invention can be manufactured by miniaturizing the fin type evaporator (Fin Type EVA) used in a general refrigerator, and can be installed downstream of the ice-making evaporator (Finger Type EVA) based on the refrigerant flow direction.

[0180] And, an evaporator fan is installed to allow cold air generated from a refrigerated evaporator (253), which is a fin type evaporator (Fin Type EVA), to flow into the ice bank, thereby forming a cooling path.

[0181] The above evaporator fan causes cold air to flow from the above refrigerated evaporator toward the ice bank.

[0182] Accordingly, when the refrigerant flowing through the second refrigerant pipe (292) passes through the second expansion valve (242), ice making is performed firstly while passing through the finger type ice evaporator (252), and secondly while passing through the fin type refrigeration evaporator (253), cold air is generated. Then, as the evaporator fan (260) operates, the cold air generated in the refrigeration evaporator (253) flows into the ice bank (130), so that the ice in the ice bank can be stored at sub-zero temperature conditions.

[0183] Additionally, while the freezing evaporator (253) cools the ice-making and ice-storage space, the ice-making evaporator (252) may not produce ice.

[0184] While ice is being created in the ice evaporator (252), the refrigerant passing through the ice evaporator (252) exchanges heat with water and its temperature rises.

[0185] In a configuration of a refrigeration cycle in which a freezing evaporator (253) is placed downstream of an ice-making evaporator (252) based on the direction of refrigerant flow, refrigerant whose temperature has increased by passing through the ice-making evaporator (252) flows into the freezing evaporator (253), so it may be difficult to cool the ice-making and ice-storage space below a certain temperature.

[0186] Considering these problems, low-temperature refrigerant can be supplied to the ice-making evaporator (252) and the freezing evaporator (253) in a state where the ice-making evaporator (252) does not generate ice. In this case, the refrigerant passes through the ice-making evaporator (252) without generating ice in the ice-making evaporator (252), and thus enters the freezing evaporator (253) with minimized heat loss. Accordingly, the freezing evaporator (253) can quickly cool the ice-making and ice-storage space or cool it to a temperature below a certain level.

[0187] For example, the control unit may not supply water to the ice tray (120) or drain the water contained in the ice tray (120) to prevent ice making. Even if ice making is not performed, low-temperature refrigerant may flow into the ice evaporator (252), and in this case, the ice evaporator (252) may only serve as a passage through which the refrigerant flows toward the freezing evaporator (253). The evaporator fan (260) may be installed on a separate fan bracket (118) and placed on the upper portion of the freezing evaporator (253).

[0188] The above fan bracket (118) may be formed to surround the edge of the evaporator fan (260) to secure the evaporator fan (260) in place.

[0189] Additionally, the fan bracket (118) can serve as an intermediate wall that divides one space into two spaces.

[0190] For example, the fan bracket (118) can partition a space where a refrigerating evaporator (253) is placed and a space where an ice-making evaporator (252) is placed. In addition, a defrosting heater (116) is installed on one side of the refrigerating evaporator (253). The defrosting heater (116) is provided to remove frost formed on the refrigerating evaporator (253), and during defrosting operation, power is supplied to melt and control the frost formed on the refrigerating evaporator (253).

[0191] In addition, the ice making unit (110) may be provided with a refrigerant pipe insulation material (117) that covers the refrigerant pipe through which the refrigerant flows to the ice making evaporator (252) or through which the refrigerant passes through the ice making evaporator (252).

[0192] According to the present invention as described above, even if the ice water purifier is miniaturized, there is an advantage in that ice-making performance can be secured.

[0193] Additionally, there is an advantage of improving the amount of ice produced per unit time by reducing the waiting time (5 minutes) due to the compressor protection logic in existing ice purifiers.

[0194] Additionally, it can reduce noise that may occur when turning the compressor ON / OFF.

[0195] In addition, there is an advantage in that the heat transfer efficiency is improved and the ice-making time can be shortened by directly transferring hot gas to the inside of the finger of the ice-making evaporator without installing a separate heater in the finger type ice-making evaporator.

[0196] Additionally, since there is no ON / OFF of the compressor during ice making, power consumption can be minimized, resulting in energy savings.

[0197] Additionally, there is an advantage in that the ice bank where the ice is stored is kept below freezing, preventing the ice that is created from melting.

[0198] Additionally, by keeping the ice bank where the ice is stored below freezing, there is an advantage in that the growth of bacteria and mold in or around the ice bank is suppressed, and hygiene is enhanced.

[0199] Additionally, there is the advantage of providing users with improved quality ice that is firmer and lasts longer as it is stored at sub-zero temperatures.

[0200] For reference, existing ice purifiers store ice at room temperature of around 3 to 4 degrees, so if ice is stored for a long time, there is a problem that the ice melts, shrinks in size, and becomes deformed.

[0201] In order to maintain a certain amount of ice, there was also the problem of electricity waste as the melted ice water had to be drained and new ice had to be continuously made.

[0202] Additionally, there was a problem in that it was difficult to maintain a constant ice-making speed or ice size depending on the external environment (season, weather, temperature, etc.) of the ice-making device.

[0203] On the other hand, according to the extraction device of the present invention, ice can be stored at a sub-zero temperature.

[0204] For example, while the refrigeration evaporator (253) is operating, the temperature range of the ice storage room can be maintained at -18 to -2 degrees, and suitably -11 to -9 degrees.

[0205] Above all, since the finger-type ice evaporator does not have a separate heater installed and heat is transferred by directly supplying hot gas to the inside of the finger, the heat transfer efficiency is increased and the ice-making time can be shortened.

[0206] In addition, it has the advantage of being equipped with a four-way refrigerant valve, so that one compressor can be operated to produce cold water, produce ice, separate ice, and store frozen ice.

[0207] Hereinafter, the structure of the ice making means of the present invention will be described in more detail.

[0208] In the following description, the term “front” refers to the direction in which the water outlet nozzle (40) through which water is supplied and the ice outlet (50) through which ice is supplied are arranged.

[0209] Referring to FIGS. 3 to 6, the ice making means of the present invention may include a body part (101) having an open upper side and forming a space on the inside, and an open upper side, and a cover part (102) detachably coupled to the upper end of the body part (101) to cover the open upper side of the body part (101).

[0210] The above cover part (102) is formed as a single body and can cover the entire open upper side of the body part (101).

[0211] The above cover part (102) has an opening / closing structure that can be separated from and then reattached to the body part (101).

[0212] In addition, the cover part (102) may be provided in multiple numbers to partially open and close the open upper side of the body part (101).

[0213] The above cover part (102) is detachably connected to the upper part of the body part (101), and can be separated and then reconnected.

[0214] A clip portion (101a) that is coupled to the cover portion (102) can be formed in the body portion (101).

[0215] The above clip portion (101a) has a center of rotation at the upper end of the body portion (101), and can be attached to or separated from the cover portion (102) while rotating.

[0216] The above clip portion (101a) forms a fixing clip (101c) that is secured to the upper end of the cover portion (102). The fixing clip (101c) extends inward from the clip portion (101a). The extension direction of the fixing clip (101c) and the extension direction of the clip portion (101a) intersect.

[0217] In addition, a clip groove (102c) that is concavely formed inward to accommodate the clip portion (101a) can be formed in the cover portion (102).

[0218] In the above case, when the cover part (102) is arranged on the upper part of the body part (101) and the clip part (101a) is fastened, the clip part (101a) is received in the clip home (102c), the fixing clip (101c) is located on the upper part of the cover part (102), and a force is generated that presses the upper part of the cover part (102) by the fixing clip (101c), so that the cover part (102) can be coupled to the body part (101).

[0219] For example, the above clip portion (101a) may be formed on the front and rear sides of the body portion (101), and a total of four clip portions may be provided.

[0220] In addition, clip grooves (102c) may be formed on both sides of the cover portion (102) at the front and rear, respectively, to accommodate and fasten each of the clip portions (101a).

[0221] Additionally, a gasket (105) may be installed between the body portion (101) and the cover portion (102) for sealing.

[0222] The above gasket (105) can be fixed to the lower part of the cover part (102).

[0223] Conversely, the gasket may be formed at the upper end of the body portion (101).

[0224] In addition, a configuration in which a clip portion is formed on the cover portion (102) and the clip portion is fastened to and then released from the body portion (101) is also possible.

[0225] With the configuration of the clip portion (101a), the cover portion (102) can be easily separated from and then reattached to the body portion (101).

[0226] The above cover part (102) is provided in an overall rectangular panel shape.

[0227] And, it has a lower cover and an upper cover, and the space between them can be filled with insulation.

[0228] A vacuum insulation panel may be attached to the inner surface of the lower or upper cover. Then, with the vacuum insulation panel attached, an insulation material such as urethane may be foamed inside to form an insulation layer.

[0229] Additionally, a gasket (105) can be fixed to the lower part of the lower cover to seal between the body part (101) and the cover part (102).

[0230] Additionally, a detection means may be installed on one side of the body part (101) and the cover part (102) to detect whether the cover part (102) is separated.

[0231] The above detection means is connected to the control unit and can detect whether the cover part (102) is separated from the body part (101).

[0232] If the cover part (102) is separated from the body part (101), the ice bank (130) is exposed to the outside, and the control unit confirms the opening of the ice bank (130) in real time through the detection means.

[0233] The above detection means may include various known sensors of various structures.

[0234] For example, a magnet may be installed in the cover portion (102) or the inner cover (103) described below.

[0235] And, when the cover part (102) or the inner cover (103) or the top cover described below is opened, a separate reed switch detects this, and the control part can control the operation of the evaporator fan to stop or control the evaporator fan to rotate at a low speed.

[0236] In addition, in the ice-making state, when the cover part (102) or the inner cover (103) described later is opened, the control unit can control the ice-making tray to return from the open position (ice-making position) to the closed position (ice-making position).

[0237] That is, when hot gas is supplied to the ice evaporator (252) or the ice heater is operated while ice is being made, if the opening of the cover part (102) or the inner cover (103) or the top cover described below is detected, the control unit stops the ice making operation and returns the ice making tray (130) to the ice making position.

[0238] For reference, the reed switch can detect the opening and closing of the cover part (102) in which the magnet is installed or the inner cover (103) described later by detecting a magnetic field. When the opening of the cover part (102) or the inner cover (103) described later is detected, the control unit can control the operation of at least one of the evaporator fan and the condenser fan to stop, or control the rotation speed (rpm) of at least one of the fans to decrease.

[0239] Additionally, the reed switch may be installed on a front cover forming the front of the water purifier body, a side panel forming the side of the water purifier body, or a rear cover forming the rear of the water purifier body.

[0240] In addition, the reed switch can be installed in various locations, such as the ice bank (130) or ice making unit (110), dispenser unit (150), etc., which are not separated from the cover unit (102) or the inner cover (103) described below, but are maintained in a fixed state.

[0241] Additionally, the body part (101) may be provided with an inner cover (103) separately from the cover part (102).

[0242] The above cover part (102) can cover the upper side of the inner cover (103).

[0243] The inner cover (103) above maintains a state of being coupled to the body part (101) even if the cover part (102) is separated from the body part (101).

[0244] Unlike the cover portion (102), the inner cover (103) must be separated from the body portion (101) and then reattached using a separate fastening means such as a screw or a tool.

[0245] For example, the internal space of the body part (101) can be divided into an ice-making space, an ice-storing space, and a cooling space.

[0246] First, the ice-making space (1011) is a space where the ice-making evaporator (252) is placed, the ice storage space (1012) is a space where the ice is made and stored, and the cooling space (1013) is a space where the refrigeration evaporator (253) that generates cold air so that the ice stored in the ice storage space (1012) is stored at a sub-zero temperature is placed.

[0247] In the case of the above ice storage space (1012), the user needs to open it to check the ice, check the internal cleanliness, wash, etc. Therefore, in the case of the ice storage space (1012), a separate inner cover is not provided, and when the cover part (102) is separated, it is immediately exposed to the outside.

[0248] On the other hand, in the case of an ice evaporator (252), a freezing evaporator (253), etc., if easily exposed, problems such as parts breaking down or the user's hand being injured may occur.

[0249] Accordingly, the ice-making space (1011) and the cooling space (1013) that accommodate the ice-making evaporator (252), the freezing evaporator (253), the evaporator fan (260), etc. have a structure in which the upper side is covered with a separate inner cover (103).

[0250] In addition, this inner cover (103) is fastened with a fastening means such as a screw so that the user cannot easily open or access it, and is configured so that it can be opened only with a separate tool.

[0251] For example, the inner cover (103) may be provided separately with an inner cover covering the ice-making space (1011) and an inner cover covering the cooling space (1013).

[0252] As another example, the inner cover (103) may be provided as one, so that the ice-making space (1011) and the cooling space (1013) may be covered at once with one inner cover (103), and may be opened at once.

[0253] The above body part (101) may have an overall rectangular shape when viewed from above.

[0254] In addition, an ice-making space (1011) and an ice-storage space (1012) may be arranged on the front side where the above-mentioned outlet (50) is arranged, and a cooling space (1013) may be arranged at the rear of the ice-making space (1011) and the ice-storage space (1012).

[0255] And, an ice storage space (1012) may be formed on one front side (left side as shown in FIG. 6) of the body part (101), and an ice-making space (1011) may be formed on the other front side (right side as shown in FIG. 6) of the body part (101).

[0256] At this time, the ice making space (1011) and cooling space (1013) have an overall ‘ㄱ’ shape when viewed from above.

[0257] In addition, the inner cover (103) may have an overall ‘ㄱ’ shape to simultaneously open and cover the ice-making space (1011) and the cooling space (1013).

[0258] That is, the cover part (102) can cover the ice-making space (1011), the ice-storage space (1012), and the cooling space (1013). In addition, the inner cover (103) can cover the cooling space (1013) or the ice-storage space (1012). The inner cover (103) can cover only the cooling space (1013) and only the ice-storage space (1012).

[0259] In addition, one inner cover (103) can cover the cooling space (1013) and the ice storage space (1012) at the same time, and an inner cover covering the cooling space (1013) and an inner cover covering the ice storage space (1012) can be provided separately.

[0260] In addition, the inner cover (103) is secured with a fastening means such as a screw so that the user can open it only by using a separate tool such as a screwdriver. This prevents the user from inadvertently opening the inner cover covering the refrigerating evaporator (253) or the ice-making evaporator (252), thereby preventing damage to the refrigerating evaporator (253) or the ice-making evaporator (252) or injury to the user.

[0261] On the other hand, the cover part (102) covering the ice storage space (1012) can be opened and closed by the user to clean the inside of the ice bank (130) or to take the ice bank (130) out of the inner cover (111), and thus can be opened without a separate tool. In the present invention, the cover part (102) can be easily opened and closed with a clip provided at the top of the ice storage part (110).

[0262] Meanwhile, a dispenser unit (150) is placed in front of the body unit (101) to supply ice toward the outlet (50).

[0263] All or part of the ice tray (120), ice bank (130), and auger (140) may be placed inside the above body part (101).

[0264] Additionally, a fan bracket (118) may be placed between the above-mentioned storage space (1012) and the cooling space (1013).

[0265] An evaporator fan (260) is installed on the above fan bracket (118).

[0266] By the above fan bracket (118), the ice storage space (1012) and the cooling space (1013) can be partitioned.

[0267] The above body part (101) may include an inner cover (111) and an outer cover (112).

[0268] For reference, the body part (101) may be equipped with only an inner cover (111) without an outer cover. In this case, an insulating material may be provided in the space between the inner cover (111) and the case forming the exterior of the water purifier.

[0269] Meanwhile, when the outer cover (112) is provided as described above, the outer cover (112) may include a first outer cover (112a) that covers one side of the inner cover (111) and a second outer cover (112b) that covers the other side of the inner cover (112b), and the outer covers (112a, 112b) may be separated into two sides and then combined.

[0270] A space is formed between the inner cover (111) and the outer cover (112), and the space can be filled with insulating material.

[0271] For example, the insulation material may be formed by foaming polyurethane (PU foam) between the inner cover (111) and the outer cover (112).

[0272] In addition, vacuum insulated panels (VIP) may be attached to the inner surface of the outer cover (112a, 112b) before foaming polyurethane (PU foam).

[0273] For example, vacuum insulation panels may be attached to the inner side surfaces on both sides, a vacuum insulation panel may also be attached to the inner bottom surface, and a vacuum insulation panel may also be attached to the inner side surface on the back.

[0274] Referring to the drawing, the inner surface of the outer cover (112a, 112b) forms a generally flat surface, making it easy to attach a vacuum insulation panel.

[0275] Inside the outer cover (112a, 112b), an inner cover (111), a cold water tank (160), and a drain tank (170) are arranged, and while the inner cover (111), the cold water tank (160), and the drain tank (170) are arranged inside the outer cover (112a, 112b), a foaming liquid is sprayed to secure an insulating layer.

[0276] In addition, since cold water is stored inside the drain tank (170) or the cold water tank (160), insulation is required to prevent condensation. In this case, if the drain tank (170) or the cold water tank (160) is placed inside the outer cover (112a, 112b), insulation can be performed all at once, thereby minimizing the number of insulation components. If the drain tank (170) or the cold water tank (160) is placed outside the outer cover (112a, 112b), separate insulation is required.

[0277] In addition, the outer covers (112a, 112b) are formed with all surfaces being flat, making it easy to attach vacuum insulation panels. The outer surface of the inner cover (111) is partially curved, particularly the bottom surface. In order to attach a vacuum insulation panel (VIP) to the curved surface, the insulation material must be cut into small pieces, making the process cumbersome.

[0278] However, since most of the outer cover (112a, 112b) is flat, if a vacuum insulation panel (VIP) is attached flatly to the inner surface, the insulation can be used in a large size, thereby reducing the number of attached insulation materials.

[0279] The first outer cover (112a) and the second outer cover (112b) can be connected to each other using hooks or screws, etc. In addition, during the foaming process, the jig holds the outer covers (112a, 112b) from both sides, so they can be fixed using only hooks.

[0280] For reference, the vacuum insulated panel (VIP) has excellent insulation performance relative to its thickness, so the gap between the outer cover (112a, 112b) and the inner cover (111) can be reduced. As a result, the size of the ice making unit (110) can be reduced.

[0281] In the present invention, since the temperature of the ice bank (130) is maintained below zero, high insulation performance is required. However, if insulation is provided only with foamed urethane, the thickness of the insulation material becomes too thick and the size of the ice-making part becomes large. Therefore, a vacuum insulation panel (VIP) with good insulation performance relative to its thickness is attached to the inner surface of the outer cover (112a, 112b), and urethane is foamed into the empty space where the vacuum insulation panel (VIP) is not attached to form an insulation layer.

[0282] The vacuum insulation panel (VIP) can be fixed to the inner surface of the outer cover (112a, 112b) using double-sided tape, etc. Since the urethane foaming process will fix the vacuum insulation panel (VIP) to the outer cover (112a, 112b) anyway, it can be fixed simply before foaming.

[0283] For reference, the thickness of the vacuum insulation panel (VIP) can be approximately 8 to 11 mm, and in the case of urethane, it can be formed to be 5 mm or more to ensure flowability when foaming. That is, the gap between the vacuum insulation panel (VIP) on which urethane is foamed and the inner cover (111) can be formed to be 5 mm or more.

[0284] If the flowability of urethane is not good, empty spaces that are not filled with the foaming liquid may be formed during urethane foaming.

[0285] As a prime example, a vacuum insulation panel (VIP) can be formed to a thickness of 10 mm, and PU (foamed polyurethane) can also be formed to a thickness of 10 mm.

[0286] The bottom surface of the above outer cover (112a, 112b) is formed to slope downward from the front to the rear.

[0287] In addition, the rear lower portion of the outer cover (112a, 112b) may be formed to be convex toward the rear so that the drain tank (170) can be accommodated therein.

[0288] And, an inner cover (111) is placed on the inside of the outer cover (112a, 112b), and the inner bottom surface of the inner cover (111) is also formed to slope downward from the front to the rear.

[0289] The outer cover (112a, 112b) and the inner cover (111) above both have an open front, and the open front can be covered by the dispenser portion (150).

[0290] The inner cover (111) forms an ice-making space (1011), an ice-storing space (1012), and a cooling space (1013) on the inner side.

[0291] Additionally, an ice bank (130) may be placed on the inside of the inner cover (111).

[0292] A plurality of passage holes (131) can be formed in the above ice bank (130).

[0293] A plurality of passage holes (131) may be formed on the bottom surface, side surface, etc. of the ice bank (130), and the bottom surface of the ice bank (130) may be formed to slope downward from the front side to the rear side. In addition, the bottom surface of the ice bank (130) may be formed as a curved surface. In addition, the ice bank (130) may have a shape in which the front side is open and the rear side is closed.

[0294] In the above ice-making space (1011), an ice-making tray (120) is installed to temporarily store water to be used for ice-making. Specifically, the ice-making tray (120) is mounted on a driving motor and a rotational shaft, and is mounted so as to be rotatable around the rotational shaft.

[0295] The ice evaporator (252) may be placed on the upper side of the ice tray (120).

[0296] Ice making is performed in the ice making evaporator (252) while the above ice making tray (120) is fixed in the ice making position. Then, when ice making is completed, the ice making tray (120) rotates.

[0297] When the ice tray (120) rotates, the water contained inside the ice tray (120) falls to the lower side of the ice tray (120). The water that falls in this way is collected in the drain tank (170) through a separate path.

[0298] In addition, when water is drained from the ice tray (120), ice frozen in the ice evaporator (252) falls below the ice evaporator (252), and the fallen ice moves to the ice bank (130) and is stored.

[0299] The above ice bank (130) has an opening formed at the top, through which ice falling from the ice tray (120) can enter the interior of the ice bank (130).

[0300] In addition, the ice bank (130) is equipped with an auger (140) that rotates in one direction and pushes ice outward, and an ice discharge guide (158) is positioned on the outlet side of the auger (140). The ice discharge guide (158) is connected to the interior of the discharge port (50) described above, so that ice discharged by the operation of the auger (140) can be delivered to the user from the discharge port (50).

[0301] The bottom and rear surfaces of the ice bank (130) are made of a water-permeable material, or are configured so that a plurality of passage holes (131) are formed so that any water that may have entered can pass through the bottom surface of the ice bank (130) and flow out downward. The water that flows out in this way passes through the ice bank (130) and is received in the drain tank (170) located at the bottom of the inner cover (111), or is drained through a separate drain pipe.

[0302] Here, a pump for drainage may be provided in the drain pipe, or an external pump may be connected to the drain pipe to perform drainage.

[0303] In addition, a lower hole is formed in the lower part of the fan bracket (118) to allow air to flow from the ice storage space (1102) to the cooling space (1103), and an upper hole is formed in the upper part of the fan bracket (118) to allow air discharged from the evaporator fan (260) to flow to the ice storage space (1102).

[0304] In addition, the fan bracket (118) is configured to divide the ice storage space (1102) and the cooling space (1103), and an insulating material may be provided inside.

[0305] When hot gas is supplied to the ice evaporator and the freezing evaporator for ice removal, the heat of the freezing evaporator may melt the ice in the ice storage space (1102), so an insulating material is placed inside the fan bracket (118) to provide insulation between the ice storage space (1102) and the cooling space (1103).

[0306] As a variation, in a configuration of a refrigeration cycle that does not supply hot gas to the refrigeration evaporator, the inside of the fan bracket (118) may not be provided with insulation.

[0307] The above fan bracket (118) acts as a passage for air to flow between the cooling space (1103) where the refrigerant evaporator (253) is placed and the ice storage space (1102).

[0308] In addition, an evaporator fan (260) may be coupled to the rear upper portion of the fan bracket (118). The evaporator fan (260) sucks in air from the side of the freezer evaporator (253) and creates a flow of air from the lower side to the upper side. Then, the cold air that has passed through the freezer evaporator (253) is supplied to the upper side of the ice storage space (1012) through the evaporator fan (260), and accordingly, the ice stored in the ice storage space (1012) can be stored at a sub-zero temperature by the cold air.

[0309] Since cold air has the property of going down, an evaporator fan (260) is installed at the top of the refrigerated evaporator (253) to pull up the cold air generated in the refrigerated evaporator (253) and supply it to the upper side of the ice storage space (1012).

[0310] The above storage space (1012) is located adjacent to the outlet (50), and the cooling space (1103) is arranged in a direction away from the outlet (50).

[0311] Additionally, the cold water tank (160) and cold water evaporator (251) can also be placed inside the body part (101).

[0312] The cold water tank (160) may be installed between the inner cover (111) and the outer cover (112). The cold water tank (160) may be positioned adjacent to the ice evaporator (252) and the freezing evaporator (253) to facilitate installation of refrigerant pipes.

[0313] An installation space is formed between the rear surface of the inner cover (111) and the rear surface of the outer cover (112), and the cold water tank (160) can be installed between the rear surface of the inner cover (111) and the rear surface of the outer cover (112).

[0314] The above cold water tank (160) is fixed to the inner cover (111) and can be placed apart from the outer cover (112).

[0315] And, when the cold water tank (160) is installed between the inner cover (111) and the outer cover (112), and insulation is foamed between the inner cover (111) and the outer cover (112), the cold water tank (160) can be automatically insulated.

[0316] Additionally, in the water extraction device of the present invention, the refrigerant compression cycle device (200) and various valves, components, lighting, etc. can be controlled through a separate control unit. In this case, the control unit may include one or more PCBs. The control unit may operate according to a programmed algorithm.

[0317] Figure 7 is an exploded perspective view of the dispenser unit, which is a component of the present invention.

[0318] Referring to Fig. 7, the dispenser unit (150) may include a case (151) that covers the open front of the ice making unit (110). An ice discharge port (152) through which ice is discharged is formed in the case (151).

[0319] And, the case (151) includes a first motor (153) for rotating the ice tray (120) and a second motor (154) for rotating the auger (140).

[0320] And, an auger (140) is placed at the rear of the dispenser section (150).

[0321] In addition, the inner side of the dispenser part (150) has a rotation axis extending in the left and right directions.

[0322] A door (155) is formed that opens and closes the ice discharge port (152) while rotating in the forward and backward directions around the center.

[0323] The above door (155) is connected to the third motor (159) and rotates forward and backward together with the rotation of the third motor (159). Then, it controls the discharge of ice that is transported forward and upward through the auger (140) and then passes through the ice discharge port (152). An ice discharge guide (158) may be arranged to guide the ice discharged through the door (155) to the discharge port (50). The ice discharge guide (158) may be understood as a means for guiding the discharge of ice.

[0324] The above-mentioned discharge port (50) may be formed on the lower side of the ice discharge guide (158).

[0325] The above ice discharge guide (158) is accommodated on the inside of the outlet (20), but can be separated at any time as needed.

[0326] For example, when the lower panel (22) forming the lower surface of the outlet (20) is separated, the lower part of the outlet (20) is opened, and the ice discharge guide (158) can be held by hand and removed separately.

[0327] In addition, after washing the ice discharge guide (158), it can be reassembled to its original position inside the outlet (20).

[0328] Additionally, the inside of the dispenser section (150) may be filled with insulating material.

[0329] The above insulation material is provided for insulation of the motor (153, 154, 159), etc.

[0330] In addition, a UV lamp that irradiates ultraviolet rays may be installed in the dispenser unit (150) to sterilize the space through which ice passes inside the dispenser unit (150) or the ice storage space of the ice tray (130), and a full ice sensor that detects whether the ice storage space of the ice tray (130) is full may be installed.

[0331] Fig. 8 is a side view of a longitudinal cross-section of an ice making unit according to one embodiment of the present invention. Fig. 9 is a top view of the interior of an ice making unit according to one embodiment of the present invention.

[0332] Referring to FIGS. 8 and 9, an ice transport grill (180) is arranged at the bottom of the ice tray (120).

[0333] The above ice transport grill (180) has a plurality of drain holes (181) on one side.

[0334] In addition, a collection pipe (190) is arranged at the bottom of the ice transport grill (180) through which water discharged from the ice tray (120) flows after passing through a drain (181), and an ice bank (130) in which ice separated from the ice evaporator (252) is stored is arranged at one side of the collection pipe (190).

[0335] The above ice bank (130) and the above collection pipe (190) can be understood as separate spaces.

[0336] In addition, the lower end of the water collection pipe (190) may be formed at a higher position than the lower end of the ice bank (130), and rather, the lower end of the water collection pipe (190) may be formed at a similar height to the upper end of the ice bank (130).

[0337] That is, the above collection pipe (190) can be formed at the upper end of one side of the ice bank (130).

[0338] The size of the above drain hole (181) is formed to be smaller than the size of the ice that falls from the ice tray (120), so that water can be discharged and ice can be filtered through the drain hole (181).

[0339] After ice making is performed in the ice making evaporator (252), ice and residual water are contained inside the ice making tray (120).

[0340] For reference, the process by which ice is created and stored can be summarized as follows:

[0341] First, ice-making water is supplied to the ice-making tray (120) located at the bottom of the ice-making evaporator (252), and the refrigerant compression cycle device (200) is operated to create ice at the finger portion of the ice-making evaporator (252).

[0342] And, after making ice, the ice tray (120) is rotated to drain the remaining ice water, separate the ice from the fingers, and store the ice in the ice bank (130).

[0343] In the ice-making step, the ice-making tray (120) rotates downward, and when the ice-making tray (120) rotates, the upper inlet of the ice-making tray (120) faces the side or downward, and residual water is discharged through the inlet of the ice-making tray (120).

[0344] And, after the drainage of the residual water is completed, the ice separated from the ice evaporator (252) falls to the ice transport grill (180). And, the fallen ice moves toward the ice bank (130) along the ice transport grill (180) that is inclined downward toward the ice bank (130) and can be stored in the ice bank (130).

[0345] In addition, when ice-making is completed, the ice-making tray (120) returns to its original position (ice-making position). At this time, the ice-making tray (120) rotates upward. Then, when the upper inlet of the ice-making tray (120) is positioned so that it faces upward, the ice-making tray (120) stops for ice-making operation and receives water for ice-making.

[0346] Meanwhile, water that falls from the ice tray (120) to the ice transport grill (180) falls to the lower part of the ice transport grill (180) through the drain (181) of the ice transport grill (180).

[0347] As described above, water that falls to the bottom of the ice transport grill (180) is drained through a separate pipe.

[0348] And, the water drained as described above is collected in the drain tank (170) located at the bottom of the ice making unit (110) through a separate path.

[0349] The above drain tank (170) may be positioned at the rearmost position. In addition, the bottom surface of the ice making unit (110) may be formed to slope downward from the front to the rear as a whole. In particular, the bottom surface of the inner cover (111) and the bottom surface of the ice bank (130) may be formed to slope downward from the front to the rear.

[0350] Accordingly, the water generated in the ice making unit (110) and requiring drainage, including the ice making residual water, flows from the front where the height is high to the rear where the height is low along the bottom surface of the inner cover (111), and is discharged through the drain pipe (119) provided at the lowest end of the inner cover (111), and can then be stored in the drain tank (170) connected to the drain pipe (119).

[0351] Meanwhile, as described above, the bottom surface of the ice bank (130) may be formed to slope downward from the front to the rear.

[0352] In detail, the bottom surface of the ice bank (130) can be formed to slope downward in the direction in which the ice is extracted.

[0353] Therefore, the ice that has fallen into the ice bank (130) is first filled in the lower rear part of the ice bank (130) along the slope.

[0354] And, ice is stored from the bottom of the ice bank (130), so that the maximum amount of ice can be stored inside the ice bank (130).

[0355] In addition, when a freezing evaporator (253) is placed at the rear of the ice bank (130), ice can be stored at the rear of the ice bank (130) adjacent to the freezing evaporator (253), and there is also an advantage in that the ice can be stored at a lower temperature as the temperature is lowered further by the freezing evaporator (253).

[0356] In addition, when the water extraction device of the present invention is viewed from the front, the ice bank (130) and the ice tray (120) can be arranged in the left and right directions. In detail, the ice bank (130) can be arranged on the left side, and the ice tray (120) can be arranged on the right side.

[0357] In addition, when the water extraction device of the present invention is viewed from the front, the ice bank (130) and the refrigerated evaporator (253) can be arranged in the front-back direction. In detail, the ice bank (130) can be positioned at the front, and the refrigerated evaporator (253) can be arranged at the rear.

[0358] To this end, the internal space of the ice making unit (110) may be provided with a partition wall that divides the space where the ice bank (130) is formed and the space where the refrigeration evaporator (253) is installed.

[0359] The above bulkhead can be understood as a fan bracket (118).

[0360] That is, the fan bracket (118) can serve as a partition wall that divides the space where the ice bank (130) is formed and the space where the refrigeration evaporator (253) is installed.

[0361] The water extraction device of the present invention includes an ice tray (120) and an ice evaporator (252) that freezes water filled in the ice tray (120).

[0362] And, the ice tray (120) has a rotation axis and rotates around the rotation axis.

[0363] The rotation axis of the above ice tray (120) is connected to a motor.

[0364] The above motor is a bidirectional motor and may be equipped with, for example, a stepping motor.

[0365] The above motor can rotate the ice tray (120) to one side and then to the other side.

[0366] In the following description, the ice-making position refers to a position where the ice-making tray (120) is fixed and does not move in the ice-making state. The ice-making position may refer to the position of the ice-making tray (120) in the standby state.

[0367] Additionally, one side of the ice tray (120) can be rotatably connected to the fan bracket (118).

[0368] Additionally, the ice tray (120) may be provided so that it can be detached separately.

[0369] In addition, a micro switch is provided to detect the rotation angle of the ice tray (120), and a rib that contacts the micro switch according to the rotation angle may be formed on at least one component that is connected to the rotation axis of the ice tray (120) or the rotation axis of the ice tray (120) and rotates together with the ice tray (120) when the ice tray (120) rotates.

[0370] In addition, the ice tray (120) is equipped with a water guide structure that guides the remaining water to flow in one direction when discarding the remaining water after ice making.

[0371] As described above, if the remaining water in the ice tray (120) flows in one direction, the phenomenon of the remaining water from the ice being drawn into the ice bank (130) where ice is stored can be prevented.

[0372] Figure 10 is a longitudinal cross-sectional view of the outlet and body viewed from the side with the door closed. Figure 11 is a longitudinal cross-sectional view of the outlet and body viewed from the side with the door open.

[0373] Referring to FIGS. 10 and 11, the front of the ice maker (110) is open, and ice stored inside the ice maker can be supplied to the outside through the open front.

[0374] And, a dispenser unit (150) is coupled to the open front of the ice making unit (110).

[0375] The above dispenser unit (150) may include a case (151) that covers the open front of the ice making unit (110). An ice discharge port (152) through which ice is discharged is formed in the case (151).

[0376] And, the case (151) includes a first motor (153) for rotating the ice tray (120) and a second motor (154) for rotating the auger (140).

[0377] And, an auger (140) is placed at the rear of the dispenser section (150).

[0378] Additionally, a door (155) for opening and closing the ice discharge port (152) is formed on the inside of the dispenser section (150).

[0379] The above door (155) is connected to the third motor (159) and rotates forward and backward together with the rotation of the third motor (159). Then, it controls the discharge of ice that is transported forward and upward through the auger (140) and then passes through the ice discharge port (152). An ice discharge guide (158) may be arranged to guide the ice discharged through the door (155) to the discharge port (50). The ice discharge guide (158) may be understood as a means for guiding the discharge of ice.

[0380] The above-mentioned discharge port (50) may be formed on the lower side of the ice discharge guide (158).

[0381] Additionally, the inside of the dispenser section (150) may be filled with insulating material.

[0382] The above ice making unit (110) is surrounded by insulating material to secure an insulating space. An ice making space, an ice storage space, and a cooling space are formed in the insulating space formed inside the above ice making unit (110).

[0383] Fig. 12 is a perspective view of an auger, which is a main component of the present invention. Fig. 13 is an exploded perspective view of an auger, which is a main component of the present invention. Fig. 14 is a perspective view of a second shaft coupling member, which is a main component of the present invention. Fig. 15 is a perspective view showing one side of an auger shaft, which is a main component of the present invention. Fig. 16 is a cross-sectional view of an ice bank and an auger, which are main components of the present invention, when viewed from the side in a state of being coupled. Fig. 17 is a plan view of an ice bank and an auger, which are main components of the present invention, when viewed from above in a state of being coupled.

[0384] Referring to FIGS. 12 to 17, the ice bank (130) may have a basket shape with an open top and an ice storage space formed inside.

[0385] An auger (140) is placed inside the above ice bank (130).

[0386] The above ice bank (130) includes a bottom surface formed to slope downward from the front to the rear.

[0387] The above floor surface may be inclined in a straight line or in a curved line.

[0388] In the case of the above ice bank (130), the user can separate it from the ice storage space of the inner cover (111) and take it out as needed.

[0389] In the present invention, a handle part (135) dedicated to the ice bank (130) is formed to facilitate separation of the ice bank (130).

[0390] The above handle part (135) may be provided in one piece.

[0391] The above handle portion (135) can be formed in multiple forms.

[0392] The above handle portion (135) can be formed in multiple pieces spaced apart in the front-back direction.

[0393] The above handle portion (135) can be detachably connected to the ice bank (130).

[0394] The above handle portion (135) can be formed to protrude upward from the ice bank (130).

[0395] The above handle portion (135) may be formed on the center of gravity side of the ice bank (130) so that the ice bank (130) does not lean to one side when the ice bank (130) is lifted.

[0396] For example, the center of gravity of the ice bank (130) may be located rearward from the center in the front-back direction, and the handle portion (135) may be formed rearward from the center in the front-back direction of the ice bank (130).

[0397] Additionally, in the case of the above ice bank (130), the depth at the rear is formed deeper than the depth at the front.

[0398] And, in the case of the auger (140), it extends from the lower rear part of the ice bank (130) to the upper front part of the ice bank (130), and in the case of the tip of the auger (140) close to the dispenser part (150), it is exposed to the upper part of the ice bank (130).

[0399] Therefore, if the handle (135) is located in front of the ice bank (130), interference may occur with the auger (140) and may also occur with the ice extracted by the auger (140).

[0400] Accordingly, a handle part (135) is formed at the upper rear end of the ice bank (130).

[0401] When a handle part (135) is formed on the upper part of the ice bank (130) as described above, the user can separate the ice bank (130) from the inner cover (111) by holding the handle part (135) and lifting it upward, and since the hand does not come into contact with the ice bank (130), the ice bank (130) can be managed hygienically.

[0402] In addition, when the ice bank (130) is lifted by holding the handle (135), the ice bank (130) does not tilt to one side (rear) and can be separated in a parallel manner to the state before separation.

[0403] A fan bracket (118) on which an evaporator fan (260) is mounted is placed at the rear of the above ice bank (130).

[0404] And, an auger (140) is accommodated inside the ice bank (130).

[0405] As described above, in order to separate the ice bank (130), the auger (140) must first be separated from the ice bank (130).

[0406] In addition, if the detachable structure of the auger (140) is complex, it is difficult to detach the auger (140), and ultimately, it becomes difficult to detach the ice bank (130).

[0407] Therefore, the removal of the auger (140) needs to be made easier.

[0408] In the case of the present invention, the auger (140) can be easily separated and installed without using separate parts.

[0409] The auger (140) has an auger shaft (141) forming a central axis.

[0410] One side (right side in Fig. 16) of the auger shaft (141) passes through the rear of the ice bank (130) and is then fitted into the shaft connection part (1185) formed inwardly concavely at the lower part of the fan bracket (118).

[0411] One side (right side in FIG. 16) of the above-mentioned auger shaft (141) can be rotatably connected to the shaft connection part (1185) formed at the lower part of the above-mentioned fan bracket (118).

[0412] One side (right side in Fig. 16) of the above-mentioned auger shaft (141) is connected by being inserted into the shaft connection part (1185) formed at the lower part of the above-mentioned fan bracket (118), and can be separated by pulling it out in the opposite direction when separated.

[0413] One side (right side in FIG. 16) of the above-mentioned axle (141) can be directly fitted into the shaft connection part (1185) formed at the lower part of the fan bracket (118), or can be connected through a separate connection member.

[0414] For example, a bearing or the like may be fitted between the shaft connection part (1185) and one side of the auger shaft (141).

[0415] In addition, the other side (left side in FIG. 16) of the auger shaft (141) can pass through the front of the ice bank (130) and then penetrate the case (151) of the dispenser part (150) that covers the open front of the inner cover (111). In addition, it can be connected to the rotation shaft (154a) of the second motor (154) that is installed on the outer surface of the case (151) and is provided to rotate the auger (140).

[0416] The above-mentioned auger shaft (141) can be directly connected to the rotation shaft (154a) of the second motor (154).

[0417] The above-mentioned auger shaft (141) may be connected to the rotation shaft (154a) of the second motor (154) through a separate member.

[0418] For example, a plurality of members can be combined between the above-mentioned auger shaft (141) and the rotation axis (154a) of the second motor (154).

[0419] Meanwhile, referring to FIG. 17, the cold water tank (160) may be installed between the inner cover (111) and the outer cover (112). The cold water tank (160) may be positioned adjacent to the ice evaporator (252) and the freezing evaporator (253) to facilitate installation of refrigerant pipes.

[0420] An installation space is formed between the rear surface of the inner cover (111) and the rear surface of the outer cover (112), and the cold water tank (160) can be installed in the installation space between the rear surface of the inner cover (111) and the rear surface of the outer cover (112).

[0421] And, the outer cover (112) can be covered by a separate housing.

[0422] And, when the cold water tank (160) is installed between the inner cover (111) and the outer cover (112), and insulation is foamed between the inner cover (111) and the outer cover (112), the cold water tank (160) can be automatically insulated.

[0423] The above cold water tank (160) forms a space where cooling water is stored.

[0424] An insulating material may be formed on the outer surface of the cold water tank (160) to insulate the cooling water from the outside air.

[0425] That is, the cold water tank (160) may be located at the rear of the cooling space (1013) located at the rear of the ice storage space (1012).

[0426] Referring again to FIGS. 13 to 16, a first shaft member (141a) may be placed at the center of the auger shaft (141) of the auger (140) to improve the strength of the auger shaft (141). The first shaft member (141a) may be formed along the longitudinal direction of the auger shaft (141). In addition, a second shaft member (141b) covering the outer side of the first shaft member (141a) may be included.

[0427] The above first axis member (141a) can be formed of a higher strength material than the second axis member (141b).

[0428] The above first axis member (141a) and second axis member (141b) can be formed of different materials.

[0429] The first axis member (141a) and the second axis member (141b) can be combined using a double injection method.

[0430] The above first axis member (141a) may be formed in the entire section of the auger shaft (141) based on the axial direction of the auger shaft (141), or may be formed in only a portion of the section.

[0431] The above auger (140) is placed inside the ice bank (130) that maintains a sub-zero temperature.

[0432] Accordingly, when the auger (140) operates at a low temperature to transport ice, problems such as cracks, breakage, or noise generation in the wings or shaft of the auger (140) may occur. In addition, if the wings or shaft of the auger (140) break and fragments enter the ice, a problem may also occur in which the user ingests the fragments along with the ice.

[0433] Accordingly, the wing member (146) and the second shaft member (141b) exposed to cold must be made of a material with low strength and ductility that does not pose a risk of breaking. For example, the wing member (146) and the second shaft member (141b) exposed to cold may be formed of a soft material such as silicone.

[0434] Meanwhile, if the auger shaft (141) is formed of a material with low strength, it is difficult to properly transmit the rotational force of the rotational shaft (154a) of the second motor (154).

[0435] Accordingly, a first shaft member (141a) made of a high-strength material that is easy to transmit the rotational force of the rotational shaft (154a) of the second motor (154) and has a low risk of deformation is placed at the center of the auger shaft (141).

[0436] For example, the first axis member (141a) may be formed of a metal material.

[0437] In particular, the first axis member (141a) may be formed of stainless steel (STS) material.

[0438] As another example, the first axis member (141a) may be formed of a high-strength plastic material.

[0439] In particular, the first axis member (141a) may be formed of POM material.

[0440] As described above, when the first shaft member (141a) is formed of a material having high strength, it is easy to transmit the rotational force of the rotational shaft (154a) of the second motor (154).

[0441] On the other hand, the second axis member (141b) covering the outer surface of the first axis member (141a) can be formed of a plastic material.

[0442] The above first axis member (141a) and second axis member (141b) can be formed by insert injection molding.

[0443] And, in the case of the first shaft member (141a), the second shaft member (141b) and the wing member (146) described later, they can be formed using a double insert injection method.

[0444] For example, the first shaft member (141a) and the second shaft member (141b) can be formed integrally by first injection molding and then second injection molding the wing member (146).

[0445] As described above, if the first shaft member (141a) is formed of a metal material, the rigidity of the auger shaft (141), which is difficult to satisfy with plastic, can be reinforced.

[0446] On the other hand, in the case of the wing member (146) described later, it is possible to prevent the wing member (146) from breaking when extracting ice by forming it with a soft plastic material such as low-density polyethylene (LDPE).

[0447] In addition, if the above and first axis member (141a) are formed of a metal material, corrosion may occur when exposed to moisture.

[0448] To prevent this, a second shaft member (141b) made of a non-metallic material covers the first shaft member (141a).

[0449] And, similarly, a wing member (146) made of a non-metallic material covers the second shaft member (141b) and the first shaft member (141a).

[0450] The first axis member (141a) is placed at the innermost side, and the second axis member (141b) is placed on the outer side.

[0451] And, the wing member (146) can be placed on the outside of the second axis member (141b).

[0452] In the case of the present invention, the second shaft member (141b) and wing member (146) made of a non-metallic material cover the first shaft member (141a) made of a metallic material secondarily, so that the first shaft member (141a) can be protected from exposure to moisture and corrosion.

[0453] Meanwhile, the wing member (146) may be made of a soft plastic material.

[0454] For example, the wing member (146) may be made of low-density polyethylene (LDPE) material.

[0455] As another example, the wing member (146) may be formed of an elastic or soft material.

[0456] Accordingly, the wing member (146) has the advantage of not breaking even at low temperatures and making less noise when transporting ice.

[0457] The above wing member (146) may include a shaft cover (146a) that covers the auger shaft (141), and a wing portion (146b) that extends from the outer surface of the shaft cover (146a) and has a screw shape.

[0458] The above shaft cover (146a) and wing portion (146b) may be formed as one piece using the same material.

[0459] When the first shaft member (141a) and the second shaft member (141b) are injected, the wing member (146) can also be formed by injection.

[0460] Additionally, the first shaft member (141a), the second shaft member (141b), and the wing member (146) can be formed with different strengths.

[0461] For example, the first shaft member (141a) may be formed of a material with the highest strength, and the second shaft member (141b) may be formed of a material with a higher strength than the wing member (146).

[0462] The above second axis member (141b) forms a hollow space along the axial direction, and the first axis member (141a) can be placed in the hollow space.

[0463] In addition, the second shaft member (141b) may form at least one of a groove portion (141c) formed concavely inwardly on the outer surface of the second shaft member (141b) or a hole portion (141d) formed by penetrating the hollow portion of the second shaft member (141b) on the outer surface of the second shaft member (141b).

[0464] In addition, a plurality of home portions (141c) or holes (141d) can be formed spaced apart from each other along the length direction of the second shaft member (141b).

[0465] The above home portion (141c) or hole portion (141d) may be provided in various shapes such as circular or oval.

[0466] And, during the injection process, at least one of the groove (141c) or hole (141d) can be filled with the shaft cover (146a).

[0467] That is, in the process of double-injecting the second shaft member (141b) and the wing member (146), the raw material of the shaft cover (146a) is filled in the groove (141c) or hole (141d), and as a result, the bonding strength between the second shaft member (141b) and the wing member (146) can be improved.

[0468] Additionally, the shaft cover (146a) may be formed with a first shaft cover (1461) that covers the first shaft coupling portion (1411) described later on one side.

[0469] The shaft cover (146a), including the first shaft cover (1461), forms a hollow space (1461a).

[0470] The first axis cover (1461) above has a through hole (1461b) that communicates with the hook hole (1414) described later.

[0471] The above shaft cover (146a) is fitted to the shaft connection part (1185) of the fan bracket (118) on the other side and forms a second shaft cover (1462) that covers the shaft end part (1415) of the auger shaft (141) that is rotatably coupled.

[0472] Additionally, a first shaft coupling portion (1411) having an expanded diameter is formed at one end of the second shaft member (141b).

[0473] The above first shaft coupling part (1411) is positioned close to the rotational axis of the motor. Therefore, the rotational force transmitted is large, and therefore the strength must be improved, so its diameter or thickness is formed to be a little thicker.

[0474] In addition, since various forces are applied to the shaft coupling portion (1411) when the auger (140) is detached, the strength thereof must be improved, and therefore, the diameter or thickness thereof is formed to be thicker.

[0475] The above first axis coupling portion (1411) can form an inclined section (1411a) with an inclined outer surface as its diameter or thickness expands.

[0476] In addition, the first axis coupling portion (1411) can form a plane section (1411b) whose diameter or thickness is expanded and then the expanded diameter is maintained constant.

[0477] That is, a flat section can be formed after a slope section.

[0478] In the above first axis coupling portion (1411), a first axis coupling groove (1412) can be formed concavely from one side (left side as shown in FIG. 15) to the other side.

[0479] A coupling protrusion (1413) extending from the inner bottom surface of the first axis coupling groove (1412) and located at the center of the first axis coupling groove (1412) can be formed.

[0480] An elastic member (145) such as a spring may be placed in the first axis coupling groove (1412).

[0481] For example, a coil spring that provides a pushing force may be placed in the first axis coupling groove (1412).

[0482] The above elastic member (145) can provide a force to push the second shaft coupling member (142) described later from the second shaft member (141b).

[0483] The above-mentioned coupling protrusion (1413) can be fitted to one side of the coil spring.

[0484] Additionally, one or more shaft coupling members may be provided to connect the auger shaft (141) of the auger (140) and the rotation shaft (154a) of the second motor (154).

[0485] First, the shaft coupling member may include a third shaft coupling member (143) that forms a third shaft coupling groove (143a) on one side into which the rotation shaft (154a) of the second motor (154) is fitted, and forms a third shaft coupling protrusion (143b) on the other side.

[0486] In addition, the shaft coupling member may include a second shaft coupling member (142) having a second shaft coupling groove (142a) formed on one side into which the third shaft coupling protrusion (143b) is fitted, and a second shaft coupling protrusion (142c) formed on the other side into which the first shaft coupling groove (1412) is fitted.

[0487] The above second axis coupling protrusion (142c) forms a protrusion groove (142b) that is concavely formed on the inside, and at least a part of the coupling protrusion (1413) can be accommodated in the protrusion groove (142b).

[0488] In addition, the elastic member (145) can provide a force to push the second shaft coupling protrusion (142c) from the inner bottom surface of the first shaft coupling groove (1412) by elastic restoring force when one side is supported by and in contact with the inner bottom surface of the first shaft coupling groove (1412) and the other side is received in the protrusion groove (142b) and in contact with the inner surface of the protrusion groove (142d).

[0489] Accordingly, when the user presses the second shaft coupling member (142) in the direction of the auger shaft (141) or presses the third shaft coupling member (143) coupled with the second shaft coupling member (142) in the direction of the auger shaft (141), the elastic member (145) is compressed. Then, the second shaft coupling protrusion (142c) of the second shaft coupling member (142) moves inward (right side in FIG. 16) of the first shaft coupling groove (1412) to the extent that the elastic member (145) is compressed and is accommodated. Then, the third shaft coupling member (143) also moves together with the second shaft coupling member (142).

[0490] As a result, as the gap between the first shaft coupling portion (1411) of the ogre shaft (141) and the third shaft coupling member (143) decreases, the rotation shaft (154a) of the second motor (154) can be separated from the third shaft coupling groove (143a).

[0491] That is, when the third shaft coupling member (143) is pressed in the direction of the auger shaft (141), the elastic member (145) is compressed, and the third shaft coupling member (143) moves in the direction of the auger shaft (141), so that the rotational shaft (154a) of the second motor (154) can be separated from the third shaft coupling groove (143a).

[0492] And in this state, by pulling the handle (135) of the ice bank (130), the ice bank (130) and the auger (140) can be separated from the inner cover (111).

[0493] Meanwhile, when the user presses the second shaft coupling member (142) in the direction of the auger shaft (141) or presses the third shaft coupling member (143) coupled with the second shaft coupling member (142) in the direction of the auger shaft (141), the elastic member (145) is compressed. Then, the second shaft coupling protrusion (142c) of the second shaft coupling member (142) moves inward (right side in FIG. 16) of the first shaft coupling groove (1412) to be accommodated as the elastic member (145) is compressed. Then, at this time, the third shaft coupling member (143) can remain coupled to the rotational shaft (154a) of the second motor (154).

[0494] And, as the gap between the first shaft coupling part (1411) of the ogre shaft (141) and the second shaft coupling member (142) decreases, the second shaft coupling member (142) and the third shaft coupling member (143) can be separated.

[0495] That is, when the second shaft coupling member (142) is pressed in the direction of the auger shaft (141), the elastic member (145) is compressed, and the second shaft coupling member (142) moves in the direction of the auger shaft (141), so that the third shaft coupling protrusion (143b) of the third shaft coupling member (143) can be separated from the second shaft coupling groove (142a) of the second shaft coupling member (142). In addition, the third shaft coupling member (143) can maintain a state of being coupled to the rotational shaft (154a) of the second motor (154).

[0496] Conversely, if the ice bank (130) and the auger (140) are to be placed on the inner cover (111), the ice bank (130) is placed on the inner cover (111), and the shaft end (1415) formed on one side of the auger shaft (141) is fitted into the shaft connection (1185) of the fan bracket (118).

[0497] The shaft end (1415) of the above-mentioned auger shaft (141) can be formed to have a diameter smaller than that of the auger shaft (141) so that it can be easily fitted into the shaft connection portion (1185) of the fan bracket (118).

[0498] Thereafter, when the second shaft coupling member (142) is pressed in the direction of the auger shaft (141), the elastic member (145) is compressed, and the second shaft coupling member (142) moves in the direction of the auger shaft (141), and in this state, the third shaft coupling protrusion (143b) of the third shaft coupling member (143) is fitted into the second shaft coupling groove (142a) of the second shaft coupling member (142).

[0499] And, when the force pressing the second shaft coupling member (142) is removed, the second shaft coupling member (142) moves in the direction of the third shaft coupling member (143) and the rotational axis (154a) of the second motor (154) by the elastic restoring force of the elastic member (145), and the third shaft coupling protrusion (143b) of the third shaft coupling member (143) is inserted into the second shaft coupling groove (142a) of the second shaft coupling member (142), so that the second shaft coupling member (142) can be connected to the third shaft coupling member (143) and the rotational axis (154a) of the second motor (154).

[0500] Additionally, the second shaft coupling protrusion (142c) of the second shaft coupling member (142) can form a rectangular cross-section.

[0501] The second shaft coupling protrusion (142c) of the second shaft coupling member (142) can form a rectangular cross-section when cut in a direction perpendicular to the axial direction of the auger shaft (141).

[0502] Additionally, the first axis coupling groove (1412) of the first axis coupling portion (1411) may also form a rectangular cross-section.

[0503] The first shaft coupling groove (1412) of the first shaft coupling portion (1411) can form a rectangular cross-section when cut in a direction perpendicular to the axial direction of the auger shaft (141).

[0504] As described above, when the cross-section of the second shaft coupling protrusion (142c) of the second shaft coupling member (142) and the first shaft coupling groove (1412) of the first shaft coupling portion (1411) is formed in a square shape, there is an advantage in that rotational force can be easily transmitted.

[0505] In addition, during the rotational motion, stress is distributed to the square corner portion, and stress is not distributed to the fixed hook (1424) of the second shaft coupling member (142) described later, so there is an advantage in that the fixed hook (1424) is not deformed or damaged.

[0506] Additionally, the above fixed hook (1424) can be formed at the corner of the second axis coupling protrusion (142c).

[0507] Additionally, the second shaft coupling groove (142a) of the second shaft coupling member (142) may also form a rectangular cross-section.

[0508] The second shaft coupling groove (142a) of the second shaft coupling member (142) can form a rectangular cross section when cut in a direction perpendicular to the axial direction of the auger shaft (141).

[0509] Additionally, the third axis coupling protrusion (143b) of the third axis coupling member (143) can also form a rectangular cross-section.

[0510] The third axis coupling protrusion (143b) of the third axis coupling member (143) can form a rectangular cross section when cut in a direction perpendicular to the axis direction of the auger shaft (141).

[0511] As described above, when the cross-sections of the second shaft coupling groove (142a) of the second shaft coupling member (142) and the third shaft coupling protrusion (143b) of the third shaft coupling member (143) are formed in a square shape, there is an advantage in that rotational force can be easily transmitted.

[0512] Additionally, a hook hole (1414) penetrating through the first axis coupling groove (1412) on the outer surface can be formed in the first axis coupling portion (1411).

[0513] The above hook holes (1414) can be formed in multiple numbers spaced apart from each other in the circumferential or axial direction of the first shaft coupling portion (1411).

[0514] Additionally, a fixed hook (1424) protruding outward may be formed on one end of the second shaft coupling protrusion (142c) of the second shaft coupling member (142).

[0515] The above fixed hooks (1424) can be formed in multiple numbers spaced apart from each other in the circumferential or axial direction of the second shaft coupling protrusion (142c).

[0516] In addition, a slit (1425) having a predetermined width can be formed on both sides of the fixed hook (1424) in the second shaft coupling member (142).

[0517] The above slit (1425) can be formed longer than the above fixed hook (1424).

[0518] As described above, when slits (1425) are formed on both sides of the fixed hook (1424), the fixed hook (1424) is fixed to the second shaft coupling member (142) on only one side, and when an external force is applied to the fixed hook (1424), it is pressed inward of the second shaft coupling member (142), and when the external force is removed, it can return to its original position.

[0519] Accordingly, when the second shaft coupling protrusion (142c) is fitted into the first shaft coupling groove (1412), the fixed hook (1424) is pressed, and when the fixed hook (1424) is fitted into the hook hole (1414), the fixed hook (1424) returns to its original position and is fastened to the hook hole (1414) in a hook manner. In addition, the second shaft coupling member (142) can be coupled to the first shaft coupling portion (1411) of the second shaft member (141b).

[0520] The above fixed hook (1424) may have an inclined surface (1424a) formed as its thickness increases from one side to the other side, a step portion (1424b) may be formed at the other end, and a side portion (1424c) may be formed extending from the step portion (1424b) to the other side.

[0521] Figure 18 is a plan view of the wing member, which is the main component of the present invention, viewed from above.

[0522] Referring to Fig. 18, in the case of the present invention, the axial spacing (P) of the wing portion (146b) can be set to about 45 mm to 55 mm.

[0523] And, the diameter (D) of the wing portion (146b) can be set to 40 mm to 55 mm.

[0524] As the axial gap (P) of the above wing portions (146b) increases, a lot of ice enters between the wing portions (146b), causing ice to become stuck and increasing torque.

[0525] Additionally, when the diameter (D) of the wing portion (146b) becomes smaller, the torque decreases.

[0526] Therefore, from a torque perspective, the smaller the diameter (D) of the wing portion (146b) and the axial spacing (P) of the wing portion (146b), the better; however, the smaller the diameter (D) of the wing portion (146b) and the axial spacing (P) of the wing portion (146b), the smaller the ice removal amount may be compared to the same rotational amount.

[0527] Accordingly, in order to ensure a certain amount of ice extraction while the torque is within a limited range, the axial spacing (P) of the wing portion (146b) may be set to about 50 mm, and the diameter (D) of the wing portion (146b) may be set to about 42.5 mm.

[0528] The foregoing description of the present invention is for illustrative purposes only, and those skilled in the art will readily appreciate that the present invention can be readily modified into other specific forms without altering the technical spirit or essential characteristics of the present invention. Therefore, the embodiments described above should be understood as illustrative in all respects and not restrictive. For example, each component described as a single entity may be implemented in a distributed manner, and similarly, components described as distributed may be implemented in a combined manner.

[0529] The scope of the present invention is indicated by the claims described below rather than the detailed description above, and all changes or modifications derived from the meaning and scope of the claims and their equivalent concepts should be interpreted as being included in the scope of the present invention.

Claims

1. A body part having a space formed on the inside and at least a portion of the front side being open; An ice tray placed on the inside of the body and filled with water for ice making; An ice bank disposed inside the body and lower than the ice tray, wherein ice separated from the ice tray is stored; An auger positioned inside the ice bank and rotating to transport ice to the outside of the ice bank; A water extraction device comprising a compressor, a condenser, an expansion valve, and an ice evaporator into which refrigerant passing through the expansion valve is introduced and provided for cooling purified water filled in the ice tray, and a freezing evaporator into which refrigerant passing through the expansion valve is introduced and provided for freezing ice stored in the ice bank.

2. In paragraph 1, The bottom surface of the above ice bank is formed to slope downward from the front to the rear, The above auger is a water discharge device arranged in a downward slope from front to rear along the bottom surface of the above ice bank.

3. In paragraph 1, A fan bracket to which the evaporator fan is fixed is placed at the rear of the above ice bank. A water discharge device having one side of the auger rotatably connected to the fan bracket through the ice bank.

4. In paragraph 1, The above auger is connected to the rotation shaft of the motor to form a rotating auger shaft, A water extraction device in which a first shaft member is formed on the inside of the above-mentioned auger shaft.

5. In paragraph 4, The above-mentioned axle includes a second axle member covering the first axle member, A water extraction device in which the strength of the first shaft member is formed to be higher than the strength of the second shaft member.

6. In paragraph 5, The above first axis member is a water extraction device made of metal.

7. In paragraph 5, The above ogre, It includes an axle cover covering the outer side of the axle, and a wing member including a screw-shaped wing part extending outward from the axle cover, A water discharge device in which the above shaft cover and wing portion are formed as one piece.

8. In paragraph 7, An extraction device in which the first shaft member, the second shaft member, and the wing portion are formed by a double injection method.

9. In paragraph 4, A water extraction device including at least one shaft coupling member connecting the auger shaft and the rotation shaft of the motor.

10. In paragraph 9, A water extraction device including a third shaft coupling member that forms a third shaft coupling groove into which the rotation shaft of the motor is fitted and forms a third shaft coupling protrusion on the other side.

11. In paragraph 10, A shaft device in which a first shaft coupling groove is formed concavely inward in the axial direction on one side of the above-mentioned shaft.

12. In paragraph 11, The above-mentioned shaft coupling member is a water discharge device including a second shaft coupling member having a second shaft coupling groove formed on one side into which the third shaft coupling protrusion is fitted, and a second shaft coupling protrusion formed on the other side into which the first shaft coupling protrusion is fitted.

13. In paragraph 12, The above second axis coupling protrusion is a water outlet device that forms a protrusion groove that is concavely formed on the inside.

14. In paragraph 13, A water outlet device formed in the first shaft coupling groove, which extends from the inner bottom surface of the first shaft coupling groove and forms a coupling protrusion located at the center of the first shaft coupling groove.

15. In paragraph 13, A water outlet device in which at least a portion of the above-mentioned coupling protrusion is accommodated in the above-mentioned protrusion groove.

16. In paragraph 13, A water extraction device in which an elastic member is inserted between the protrusion groove and the first shaft coupling groove to provide a force for pushing the second shaft coupling member out of the auger shaft.

17. In paragraph 13, A water discharge device in which a fixed hook protruding outward is formed on one end of the second shaft coupling projection of the second shaft coupling member.

18. In paragraph 17, In the above second axis coupling member, a discharge device is formed with a slit cut to a predetermined width on both sides of the above fixed hook.

19. In paragraph 17, A water discharge device in which a hook hole is formed in the above-mentioned auger shaft, into which the second shaft coupling projection is fitted into the first shaft coupling groove, and into which the fixed hook is fitted and connected.

20. In paragraph 5, A water extraction device in which a first shaft coupling portion having an expanded diameter or thickness is formed on one end of the second shaft member adjacent to the rotational axis of the motor to reinforce strength.

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