JP2010096410A - Refrigerator - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide clean cold water by preventing deterioration of the cold water even when it remains in a cold water tank. <P>SOLUTION: A cold water tank 31 for storing tap water and a filter 32 for purifying cold water are provided on a door 4 of a refrigerator 2. The filter 32 is located on the downstream side of the cold water tank 31. Since water stored in the cold water tank 31 includes chlorine, breeding of bacteria etc. can be suppressed. When supplied, the cold water in the cold water tank 31 is purified by the filter 32 and is filled in a cup from a dispenser. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a refrigerator capable of automatic water supply and automatic ice making.

In the refrigerator, a dispenser that can take out ice and cold water without opening the door is provided. For example, like patent document 1, a dispenser is provided in the front of a door and a filter is provided in the inside of a door. A cold water tank is provided between the filter and the dispenser. Water supplied from the outside is purified by a filter and temporarily stored in a cold water tank. During this time, the water is cooled to become cold water, and cold water is provided from the dispenser.
JP 2005-528577 A

  By the way, if cold water remains in the cold water tank, there is a possibility that various germs may propagate, which is unsanitary. Therefore, in view of the above, an object of the present invention is to provide a refrigerator that can always supply sanitary cold water.

  The present invention is provided with a dispenser for taking out water cooled by cool air in the storage chamber to the outside of the door that opens and closes the storage chamber, and a filter that purifies water supplied from the outside on the inner surface of the door; A cold water tank that is cooled by cold air in the storage chamber is provided, and a cold water tank is disposed upstream of the filter. The storage room is a refrigerated room or the like that is mainly adjusted to a temperature of 0 ° C. or higher.

  Water supplied from the outside is stored in a cold water tank and cooled by cold air. Then, the cold water stored in the cold water tank is supplied to the dispenser through the filter. That is, immediately before the cold water is provided, the cold water is purified, and sanitary cold water can be provided.

  The door is provided with a protruding portion that protrudes toward the storage chamber, and the filter is disposed immediately below the protruding portion. In general, a portion immediately below the projecting portion cannot accommodate an object and becomes a dead space. A filter can be installed using this empty space. Even if the filter is provided in the storage chamber, the storage of the storage chamber is not affected.

  The door is provided with an ice making chamber equipped with an ice making machine, the ice making chamber is a protrusion, and the filter is attached to the lower surface of the ice making chamber. Cold water that has passed through the filter from the cold water tank is supplied to the ice making machine, and ice is made. Thereby, since ice can be made with water from which impurities such as chlorine have been removed, ice without an unpleasant odor or taste can be made.

  The filter has a replaceable cartridge and a holder that detachably holds the cartridge, and the cartridge is attached and detached by rotating with respect to the holder. The holder is attached to the door, and one end in the longitudinal direction of the cartridge is held by the holder. When the door is opened, the cartridge is horizontally installed so that the other end in the longitudinal direction of the cartridge is on the front side.

  When the door is opened, when the user holds the other end of the cartridge with one hand and rotates, the cartridge can be removed from the holder. Therefore, the cartridge can be exchanged with one hand while the door is opened. In addition, since the other end of the cartridge comes close to the user, even if the door is not fully opened, the cartridge can be replaced with a little opening, and leakage of cool air in the storage chamber can be minimized.

  Below the filter is provided a tray for water that leaks when the cartridge is replaced. When removing the cartridge from the holder, the water droplets remaining on the holder or the cartridge can be prevented from falling on the floor.

  The water supply path from the external water source to the cold water tank passes from the back of the cabinet through the ceiling, through the inside of the hinge that supports the door so that it can be opened and closed, and through the inside of the door to the water supply tank. Water can be supplied without piping in the storage chamber, and storage in the storage chamber is not hindered. When the cartridge moves away from the holder, the holder blocks the water supply path. Therefore, water leakage does not occur when the cartridge is replaced.

  According to the present invention, since it can be purified immediately before pouring water from the dispenser, clean cold water can always be provided even if water is accumulated in the cold water tank.

  The refrigerator of this embodiment is shown in FIGS. The cabinet 1 of the refrigerator is partitioned up and down to form a plurality of storage rooms. The upper storage chamber is the refrigeration chamber 2, and the lower storage chamber is the freezer compartment 3. The cabinet 1 is a heat insulating box filled with a heat insulating material between the outer box and the inner box, and the front side is open. The refrigerator compartment 2 is provided with double doors 4 on the left and right. The door 5 of the freezer compartment 3 is a drawer type. The door 5 of the freezer compartment 3 may be a double door.

  One door 4 of the refrigerator compartment 2 is provided with a dispenser 6, and cold water, ice cubes and crushed ice can be provided without opening the door 4. In FIG. 1, reference numeral 7 denotes a paddle switch. When this switch 7 is pressed with a glass or a pan, cold water and ice come out from above. Reference numeral 8 denotes an operation unit, which includes buttons for selecting cold water, ice cubes, and crash ice. In FIG. 2, 9 is a vegetable case, 10 is a chilled case, and 11 is a small pocket.

  As shown in FIGS. 3 to 6, an ice making chamber 20 for generating ice is provided inside the door 4. The ice making room 20 is a space surrounded by a heat insulating wall on the upper, lower, left and right sides and covered with a detachable lid 21, and is insulated from the refrigerator compartment 2. The ice making chamber 20 includes an ice making machine 22 and an ice storage case 23. The ice making machine 22 has an ice making tray 24 that is installed in the upper part of the ice making chamber 20 and rotates around a horizontal axis. An ice storage case 23 is installed below the ice tray 24. Ice generated in the ice tray 24 falls to the ice storage case 23 by the rotation of the ice tray 24, and ice is stored. The ice storage case 23 is provided with a crash unit 25, and ice cubes are crashed to produce crash ice. A chute 26 is formed on the bottom surface of the ice storage case 23 so as to pass through the door 4. The chute 26 communicates with the dispenser 6 and discharges ice cubes or crash ice.

  The ice making chamber 20 is supplied with cold air and water to produce ice. Water is supplied to the ice making machine 22 from the outside. The cold air is supplied from the freezing room 3 to the ice making room 20. Moreover, the water from the outside is cooled by the cold air in the refrigerator compartment 2 to become cold water, and this cold water is provided from the dispenser 6.

  As shown in FIG. 3, a first water supply valve 30, a cold water tank 31, a filter 32, and a second water supply valve 33 are interposed in order from the upstream side in the water supply path from the external water supply to the ice making machine, and are respectively connected by pipes 34. It is connected.

  The 1st water supply valve 30 is arrange | positioned in the compressor chamber 40 formed in the lower part of the back side of the cabinet 1, and is directly connected with the hose from a water supply. In the compressor chamber 40, a compressor 41 is installed.

  The cold water tank 31 and the filter 32 are provided in the refrigerator compartment 2. The first water supply valve 30 and the filter 32 are connected by a pipe 34, and the cold water tank 31 is formed by winding the pipe 34 spirally in the middle. As shown in FIG. 3, the pipe 34 passes from the compressor room 40 to the ceiling 42 through the back surface of the cabinet 1. During this time, the pipe 34 passes through the inside of the heat insulating material. Further, as shown in FIG. 7, the pipe 34 passes through the hollow shaft of the upper hinge 43 that supports the door 4 from the ceiling 42 so as to be freely opened and closed, passes through the inside of the heat insulating material of the door 4, and passes through the inner surface of the door 4. It protrudes to the side and reaches the cold water tank 31.

  The cold water tank 31 and the filter 32 are attached to the inner surface of the door 4. The cold water tank 31 is exposed to the cold air in the refrigerator 2 to generate cold water. The filter 32 is a general filter having a water purification function and a sterilization function, and is replaceable. The cold water tank 31 may be a container-like tank.

  A second water supply valve 33 is provided on the downstream side of the filter 32 and is attached to the inner surface side of the door 4. The second water supply valve 33 and the cold water tank 31 are preferably covered with a cover so that they cannot be seen when the door 4 is opened. A vent is formed in the cover, and the cold water tank 31 is directly exposed to the cold air in the refrigerator compartment 2. Alternatively, the cover is formed of a thin resin and the cold water tank 31 is indirectly exposed to cold air.

  The second water supply valve 33 is a three-way valve, and branches the water supply path between the ice making chamber side and the water injection side. In the route on the water injection side, the water injection pipe 44 connected to one outlet of the second water supply valve 33 passes through the inside of the heat insulating material of the door 4 and protrudes from the concave portion of the dispenser 6 to the outside.

  When the user selects cold water in the operation unit 8 and operates the paddle switch 7, the first water supply valve 30 is opened, tap water is supplied, and the cold water stored in the cold water tank 31 is purified by the filter 32. Then, the water is poured into the cup from the water injection pipe 44 through one outlet of the second water supply valve 33. In addition, the capacity | capacitance of the cold water tank 31 is set so that it may become the capacity | capacitance more than one cup.

  In the path on the ice making chamber 20 side, the water supply pipe 45 connected to the other outlet of the second water supply valve 33 passes through the inside of the heat insulating material of the door 4 and projects into the ice making chamber 20 from the upper part of the ice making chamber 20. When it is detected that the ice in the ice storage case 23 is low, the first water supply valve 30 is automatically opened, tap water is supplied, and the cold water stored in the cold water tank 31 is purified by the filter 32, The water is poured from the water supply pipe 45 to the ice tray 24 through the other outlet of the second water supply valve 33.

  Thus, in the refrigerator compartment 2, the cold water tank 31 is located upstream from the filter 32, and the filter 32 is located near the outlet of the cold water. The cold water tank 31 stores water from the water supply. Since this water contains chlorine, microorganisms such as bacteria do not propagate. As the chlorine passes through the filter 32, the water is easily damaged. However, it is immediately drained to the outside as cold water or becomes ice, and clean water can be used without damaging the water.

  Further, by arranging the cold water tank 31 and the filter 32 in the refrigerator compartment 2 as described above, not only the cold water tank 31 but also the filter 32 is cooled by being exposed to cold air, so that cold water is contained in these. Even if it has accumulated, cold water is not damaged and hygienic water supply can always be performed. Here, even if the water is stored in the cold water tank 31 and the bacteria are propagated, when the cold water is supplied from the dispenser 6, the cold water passes through the filter 32 having a sterilizing function. Cold water is supplied after being purified, and can always supply sanitary water.

  Moreover, by collecting the parts related to water supply and ice making in the door 4, it is only necessary to attach the completed door 4 to the cabinet 1, and the assembling work becomes easy. However, even if the water in the cold water tank 31 and the filter 32 is always cooled, impurities such as germs may enter from outside after a long period of time. However, since the cold water is purified by the filter 32 immediately before use, such impurities can be removed without any problem, and clean cold water can be obtained.

  Next, regarding the cool air path to the ice making chamber 20, as shown in FIGS. 5 and 6, the cool air is sent from the freezing chamber 3 to the ice making chamber 20. Then, the cold air is returned from the ice making chamber 20 to the freezing chamber 3. A cold air supply duct 50 and a cold air return duct 51 that communicate the freezing chamber 3 and the ice making chamber 20 are provided. Both ducts 50 and 51 pass from the freezer compartment 3 through the inside of the partition wall 52 that separates the freezer compartment 3 and the refrigerator compartment 2, through the inside of the heat insulating material on the side surface of the cabinet 1, and to the side wall of the refrigerator compartment 2. A connection port 53 of the cold air supply duct 50 and a connection port 54 of the cold air return duct 51 are formed on the side wall of the refrigerator compartment 2. The connection port 53 of the cold air supply duct 50 is located above the connection port 54 of the cold air return duct 51.

  The side wall of the ice making chamber 20 contacts the side wall of the refrigerator compartment 2 when the door 4 is closed. The side wall is formed with a cold air inlet 55 and a cold air outlet 56 below the cold air inlet 55. The cold air inlet 55 faces the connection port 53 of the cold air supply duct 50, and the cold air outlet 56 faces the connection port 54 of the cold air return duct 51. The periphery of each mouth is surrounded by a sealing material, and when the door 4 is closed, the upper connecting port 53 and the cold air inlet 55 and the lower connecting port 54 and the cold air outlet 56 are in close contact with each other, and the cold air does not leak. .

  The cold air inlet 55 of the ice making room 20 is located near the ceiling of the ice making room 20. As shown in FIG. 8, the ice tray 24 is disposed in the upper part of the ice making chamber 20, and a wind direction plate 57 is provided in the vicinity of the cold air inlet 55 in the ice making chamber 20. The wind direction plate 57 guides the cold air that has entered from the cold air inlet 55 to blow down toward the ice tray 24. Then, the cold air descending in the ice making chamber 20 goes out from the cold air outlet 56 located at the lower part.

  A cold air intake 60 of the cold air supply duct 50 and a cold air outlet 61 of the cold air return duct 51 are provided in the freezer compartment 3. The cold air inlet 60 is located above the cold air outlet 61. An ice making fan 62 is provided at the cold air inlet 60. By the operation of the ice making fan 62 made of a sirocco fan, the cold air in the freezer compartment 3 is sucked into the cold air supply duct 50 and sent into the ice making chamber 20. Further, the cold air is returned from the ice making chamber 20 to the freezer compartment 3 through the cold air return duct 51.

  Thus, the cold air supply duct 50 and the cold air return duct 51 communicate with each other through the ice making chamber 20. That is, one cool air path is formed, and the entrance / exit of the cool air path is located in the freezer compartment 3.

  An evaporation chamber 63 is located on the back side of the freezer chamber 3. In the evaporation chamber 63, an evaporator 64 that generates cold air is provided. The evaporation chamber 63 and the freezing chamber 3 are partitioned by a back plate 65. The evaporation chamber 63 is divided into a front chamber 67 and a rear chamber 68 by a partition plate 66. An evaporator 64 is disposed in the rear chamber 68, and a cooling fan 69 is provided above the evaporator 64. The cooling fan 69 is attached to the partition plate 66.

  As shown in FIG. 9, a cold air outlet 70 and a cold air return port 71 are formed in the back plate 65. The cold air outlet 70 is formed above the cold air return port 71. The freezing chamber 3 and the front chamber 67 of the evaporation chamber 63 communicate with each other through the cold air outlet 70, and the cold air generated in the rear chamber 68 is blown out from the cold air outlet 70 to the freezing chamber 3 by the operation of the cooling fan 69. The Further, the front chamber 67 communicates with the refrigerator compartment 2, and cold air is sent to the refrigerator compartment 2 by opening and closing a damper (not shown).

  An ice making fan 62 is attached to the upper part of the back plate 65. The ice making fan 62 is disposed immediately above the cold air outlet 70. The ice making fan 62 is located closer to one side of the ice making chamber 20, the cooling fan 69 is located in the center in the left-right direction, and both fans 62, 69 are separated in the left-right direction. The cold air coming out of the cold air outlet 70 is immediately taken into the ice making fan 62 and sent to the ice making chamber 20. Therefore, the coldest cold air can be supplied to the ice making chamber 20. Further, since the ice making fan 62 is located at the back of the freezer compartment 3, it does not interfere with the storage in the freezer compartment 3.

  The cold air return port 71 is formed in the lower part of the back plate 65 and communicates with the rear chamber 68. The operation of the cooling fan 69 causes the rear chamber 68 to have a negative pressure, and the cool air in the freezer compartment 3 is sucked from the cool air return port 71. The cool air return duct 51 is attached to the back plate 65 downward, and the cool air discharge port 61 is located in the vicinity of the cool air return port 71. The position of the cold air outlet 61 is preferably a little higher than the cold air outlet 71. The cold air blown out from the cold air discharge port 61 flows downward and is sucked from the cold air return port 71 as it is. Therefore, the returned cold air does not diffuse into the freezer compartment 3.

  Thus, the cool air outlet 61 is disposed away from the cooling fan 69. The temperature of the cool air that has returned from the ice making chamber 20 is higher than that of the cool air in the freezer compartment 3. That is, when the cool air in the freezer compartment 3 is −18 ° C., the returned cool air is about −10 ° C. When the cool air outlet 61 is near the cooling fan 69, the return air is diffused into the freezer compartment 3 due to the cool air blown from the cool air outlet 70 near the cooler fan 69, and the temperature of the freezer compartment 3 is increased. If the cool air outlet 61 is away from the cooling fan 69, the wind speed of the cool air blown out from the cool air outlet 70 is weak, so that the return cool air is not diffused, and all the return cool air is sucked into the evaporation chamber 63 from the cool air return port 71. The temperature rise of the freezer compartment 3 can be prevented.

  The ice making fan 62 is driven in synchronization with the cooling fan 69 when automatic ice making is set. Automatic ice making is set by the user. When ice is not required, the automatic ice making is canceled and the ice making fan 62 stops.

  In the above refrigerator, the user receives provision of cold water or ice using the dispenser 6. When used for a long period of time, the filter 32 must be replaced. As shown in FIG. 12, the filter 32 includes a holder 80 and a cartridge 81. The cartridge 81 is detachably held on the holder 80.

  The holder 80 is attached to the inner surface of the door 4 of the refrigerator compartment 2. The cartridge 81 is held in a posture parallel to the inner surface of the door 4. Two connection ports are provided in the holder 80, one connection port is connected to the cold water tank 31, and the other connection port is connected to the second water supply valve 33. Cold water that has entered from one of the connection ports passes through the inside of the holder 80 and enters the cartridge 81. The cold water purified by the cartridge 81 passes through the inside of the holder 80 and exits from the other connection port.

  The cartridge 81 is rotatable about the vertical axis with respect to the holder 80, and the cartridge 81 is locked to the holder 80 when the cartridge 81 is straight with respect to the holder 80 as shown in FIG. Being held. As shown in FIG. 12 (b), when the cartridge 81 is rotated to assume an inclined posture, the cartridge 81 can be detached from the holder 80.

  When the cartridge 81 is detached from the holder 80, the two connection ports on the inlet side and the outlet side with the cartridge 81 in the holder 80 are closed so that water does not leak. For example, when a gate biased by a spring is provided in the holder 80 and the cartridge 81 is mounted on the holder 80, the gate is opened and the connecting port is opened. When the cartridge 81 is removed, the gate is moved by the spring to close the connection port. As a result, the water supply path is blocked, and water leakage at the time of cartridge replacement can be prevented. The filter 32 having such a structure is disclosed in, for example, WO2006 / 124906.

  The filter 32 is attached to the door 4 horizontally. That is, the holder 80 is installed on the inner surface of the door 4 so that the vertical axis is a vertical direction, and the cartridge 81 is horizontal. The cartridge 81 rotates in the horizontal direction. Then, one end of the cartridge 81 in the longitudinal direction is attached to the holder 80. Therefore, as shown in FIG. 2, the holder 80 is installed near the hinge 43 of the door 4, and the other end of the cartridge 81 is located on the side away from the hinge 43. When the door 4 is opened, the other end of the cartridge 81 comes to the front side. That is, the other end of the cartridge 81 is close to the user.

  When the user opens the door 4, holds the other end of the cartridge 81 and rotates it in the horizontal direction, the cartridge 81 is detached from the holder 80. At this time, the water supply path is blocked by the holder 80, and water does not leak out.

  As shown in FIG. 2, a tray 82 projects from the inner surface of the door 4 below the filter 32. When the cartridge 81 is attached or detached, water droplets remaining on the cartridge 81 or the holder 80 fall, but the leaked water droplets are received by the tray 82. Thereby, when the cartridge 81 is replaced, it is possible to prevent water droplets from falling and getting the floor wet.

  As another filter 32, as shown in FIG. 13, the cartridge 81 rotates about the horizontal axis with respect to the holder 80. As shown in FIG. 6A, when the cartridge 81 is rotated in the left-right direction, the cartridge 81 can be attached to and detached from the holder 80 as shown in FIG. Such a filter 32 is disclosed in, for example, Japanese Patent Laid-Open No. 62-234512.

  By using the filter 32 having the above structure, the user can remove and attach the cartridge 81 with one hand, and can replace the cartridge 81 in a short time. Further, even if the door 4 is not fully opened, the replacement can be performed with the door 4 being slightly opened. As a result, the replacement time of the cartridge 81 is shortened, the leakage of cold air from the refrigerator compartment 2 at the time of replacement can be reduced, the temperature rise of the refrigerator compartment 2 is suppressed, the excessive operation of the compressor 41 is eliminated, and energy saving is achieved. Contribute.

  As shown in FIG. 7, the filter 32 is disposed horizontally on the lower surface of the ice making chamber 20 as an installation place of the filter 32. The ice making chamber 20 is formed to protrude from the door 4, and is a protruding portion protruding toward the inside of the so-called refrigeration chamber 2. There is a small pocket 11 below the ice making chamber 20, but even if a tall object is put in, a dead space is created immediately below the ice making chamber 20. By installing the filter 32 using this space, the space in the refrigerator compartment 2 can be used effectively, and the capacity of the refrigerator compartment 2 is not affected.

  As another installation place, as shown in FIG. 14, the filter 32 is horizontally disposed in a space immediately below the accessory pocket 11. The accessory pocket 11 is also one of the protrusions protruding from the door 4. Since the accessory pocket 11 is provided in the lower part of the door 4, the filter 32 below this is not conspicuous.

  In addition, this invention is not limited to the said embodiment, Of course, many corrections and changes can be added to the said embodiment within the scope of the present invention. The filter and the cold water tank may be installed on the side surface or ceiling of the refrigerating room near the ice making room. Thereby, a water supply path | route can be shortened.

  In the freezer compartment, the cold air outlet may be provided above the cold air inlet, and the cold air outlet and the cold air inlet may be separated from each other. The cold air returned from the ice making chamber is discharged to the upper part of the freezer compartment, mixed with the cold air blown out from the cold air outlet, and diffused into the freezer compartment. On the other hand, since cold air is taken into the ice making chamber from the lower part of the freezer compartment, a downward flow of cold air is generated, and the upper cold air quickly reaches the lower part. Therefore, the flow of cool air in the freezer compartment is improved, and the temperature unevenness in the room is reduced.

  The dispenser may be provided on a door of a storage room such as a vegetable room or a chilled room other than the refrigerator room. The filter and the cold water tank are provided at the door of the storage room with the dispenser, but may be provided at the door of another storage room.

Front view of the refrigerator of the present invention Front view of refrigerator with door open Perspective view of refrigerator showing water supply path Figure showing the door of the refrigerator compartment with ice making and water supply structure Perspective view of refrigerator showing cold air path Cross-sectional view of the refrigerator showing the cold air path Cross section of cold room door Figure showing the inside of an ice making chamber Front view of cabinet The filter is shown, (a) is a diagram showing a state where the cartridge is held in the holder, (b) is a diagram showing a state where the cartridge is removed from the holder The other filter is shown, (a) is a diagram showing a state where the cartridge is held in the holder, (b) is a diagram showing a state where the cartridge is removed from the holder Cross-sectional view of the door of a refrigerator compartment with different filter installation locations

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Cabinet 2 Refrigerating room 3 Freezing room 4 Door 6 Dispenser 20 Ice making room 22 Ice making machine 23 Ice storage case 24 Ice making plate 30 1st water supply valve 31 Cold water tank 32 Filter 33 2nd water supply valve 50 Cold air supply duct 51 Cold air return duct 60 Cold air removal Inlet 61 Cold air outlet 62 Ice making fan 63 Evaporating chamber 69 Cooling fan 70 Cold air outlet 71 Cold air return port 80 Holder 81 Cartridge 82 Receptacle

Claims (7)

The door for opening and closing the storage chamber is provided with a dispenser for taking out the water cooled by the cool air in the storage chamber to the outside of the warehouse, a filter for purifying water supplied from the outside on the inner surface of the door, and the cool air in the storage chamber And a chilled water tank that is cooled by the chilled water tank, the chilled water tank is disposed upstream of the filter, and the chilled water stored in the chilled water tank is supplied to the dispenser through the filter. The refrigerator according to claim 1, wherein the door is provided with a protruding portion that protrudes toward the storage chamber, and the filter is disposed immediately below the protruding portion. The filter includes a replaceable cartridge and a holder that detachably holds the cartridge. The cartridge is attached to and detached from the holder by rotating with respect to the holder, the holder is attached to the door, and one end in the longitudinal direction of the cartridge is The refrigerator according to claim 1 or 2, wherein the cartridge is horizontally installed so that when the door is opened by being held by the holder, the other longitudinal end of the cartridge comes to the front side. The door is provided with an ice making room equipped with an ice making machine, the ice making room is a protrusion, the filter is attached to the lower surface of the ice making room, and cold water that has passed through the filter from the cold water tank is supplied to the ice making machine. The refrigerator according to claim 2 or 3, characterized by the above. 4. The refrigerator according to claim 3, wherein a tray for water that leaks when the cartridge is replaced is provided below the filter. The water supply path from the external water source to the cold water tank passes through the ceiling from the back of the cabinet, passes through the inside of the hinge that supports the door so that it can be opened and closed, and passes through the inside of the door to the water supply tank. The refrigerator in any one of 1-5. The refrigerator according to claim 6, wherein when the cartridge is separated from the holder, the holder blocks the water supply path.

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