JP2017026173A - Cooling system and refrigerator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a cooling system which enables reduction of manufacturing costs related to a structure for defrosting, compared to a conventional cooling system.SOLUTION: A cooling system 20 including: a cooler 11 to which fins 159 are attached; a heater 150 disposed below the cooler 11; a drain receiver 153 disposed below the heater 150; an upper cover 151 disposed between the heater 150 and the cooler 11; and a lower cover 152, which is disposed between the heater 150 and the drain receiver 153, is provided. A width B of the lower cover 152 is shorter than a width C of each fin 159 when viewed in a fore and aft direction in a side view. A width A of the upper cover 151 is shorter than a width B of the lower cover 152 when viewed in the fore and aft direction in the side view.SELECTED DRAWING: Figure 6

Description

  The present invention relates to a technology of a cooling system including a compressor and an evaporator, and particularly to a technology for defrosting.

  Conventionally, a cooling system including a compressor and an evaporator and a refrigerator equipped with the cooling system are known. Furthermore, the technique for defrosting an evaporator with a heater is also known.

  For example, JP 2001-174134 A (Patent Document 1) discloses a refrigerator. According to Japanese Patent Laid-Open No. 2001-174134 (Patent Document 1), a heater cover of a defrosting heater installed below an evaporator in a cold air duct is covered by substantially two members that respectively cover the front side and the rear side of the heater body. With the structure, the suction port and discharge port are formed below and above the heater body, respectively, and the upper end of the front member of the heater cover is located above and behind the upper end of the rear member at the discharge port and obliquely downward And the discharge port is located at a position biased to the rear side of the center of the cold air duct.

  Japanese Patent Laying-Open No. 2005-201523 (Patent Document 2) discloses a refrigerator. According to Japanese Patent Laying-Open No. 2005-201523 (Patent Document 2), a glass tube defrost heater is arranged below the cooler to perform defrosting, and the flow of return air flowing through the cooler during cooling is obstructed. In addition, when defrost water is dripped from the cooler during defrosting, a return ceiling is provided for cooling the inside of the cabinet by providing a heater ceiling cover that prevents the defrost water from directly reaching the glass tube defrost heater. The cooling resistance can be increased by reducing the ventilation resistance of the ventilation path to the vessel.

  Japanese Patent Laying-Open No. 2009-127925 (Patent Document 3) discloses a cooler with a defrost heater and an article storage device. According to Japanese Patent Laying-Open No. 2009-127925 (Patent Document 3), a cooler disposed in a refrigerator main body, which is a heat insulating box forming a storage chamber, is composed of a cooling pipe and fins, and is positioned at least at the lowest level. The cooling pipe has a bare pipe part where fins are not formed, and a defrost heater is fixed to the bare pipe part of the cooler via a heat transfer plate, so that the heat conduction of the cooling pipe and the convection in the pipe are Improvement is achieved and defrosting can be performed efficiently.

JP 2001-174134 A JP 2005-201523 A JP 2009-127925 A

  However, it is required to reduce the manufacturing cost related to the configuration for defrosting the cooling system as compared with the conventional art. The objective of this invention is reducing the manufacturing cost regarding the structure for the defrosting of a cooling system conventionally.

  According to an aspect of the present invention, a cooler to which a plurality of fins are attached, a heater disposed below the cooler, a drain receiver disposed below the heater, the heater and the cooler A cooling system is provided that includes an upper cover disposed therebetween and a lower cover disposed between the heater and the drain receiver. In the side view, the width of the lower cover in the front-rear direction is shorter than the width in the front-rear direction of the plurality of fins, and in the side view, the width of the upper cover in the front-rear direction than the width in the front-rear direction of the lower cover Is shorter.

  Preferably, a distance from the heater to the fin of the cooler is longer than a distance from the lower cover to the drain receiver.

  Preferably, a distance from the heater to the fin of the cooler is longer than a distance from the heater to the drain receiver.

  Preferably, in a side view, the opening angle of the lower cover upward is 70 degrees or more and 120 degrees or less.

  When another mode of this invention is followed, a refrigerator provided with the above-mentioned cooling system is provided.

  As mentioned above, according to this invention, the manufacturing cost regarding the structure for the defrosting of a cooling system can be reduced rather than before.

It is a front view which shows the outer side of the refrigerator 100 concerning 1st Embodiment. It is a front view which shows the inner side of the refrigerator 100 concerning 1st Embodiment. It is side surface sectional drawing which shows the inner side of the refrigerator 100 concerning 1st Embodiment. It is a figure which shows the back inner side of the refrigerator 100 concerning 1st Embodiment. It is a side view which shows the inner side of the refrigerator 100 concerning 1st Embodiment. It is a side surface enlarged view which shows the heater 150 vicinity concerning 1st Embodiment. It is a plane enlarged view which shows the heater vicinity concerning 1st Embodiment. It is a side surface enlarged view which shows the heater 150 vicinity concerning 2nd Embodiment. It is a side surface enlarged view which shows the heater 150 vicinity concerning 3rd Embodiment. It is a side surface enlarged view which shows the heater 150 vicinity concerning 4th Embodiment.

Hereinafter, embodiments of the present invention will be described with reference to the drawings. In the following description, the same parts are denoted by the same reference numerals. Their names and functions are also the same. Therefore, detailed description thereof will not be repeated.
<First Embodiment>
<Overall configuration of refrigerator>

  First, with reference to FIGS. 1-3, the whole structure of the refrigerator 100 which concerns on this Embodiment is demonstrated. In addition, FIG. 1 is a front view which shows the outer side of the refrigerator 100 concerning this Embodiment. FIG. 2 is a front view showing the inside of the refrigerator 100 according to the present embodiment. FIG. 3 is a side sectional view showing the inside of the refrigerator 100 according to the present embodiment.

  The refrigerator 100 includes a heat insulating box 2. The heat insulating box 2 is provided with a refrigerator compartment 4 in the upper part, and freezer compartments 21 and 5 are arranged side by side below the refrigerator compartment 4. A freezer compartment 6 is arranged below the freezer compartments 21 and 5, and a vegetable compartment 7 is arranged below the freezer compartment 6. The functions of these rooms are preferably switchable.

  The refrigerator compartment 4 and the freezer compartments 21 and 5 are partitioned by a heat insulating wall 18, and the freezer compartment 6 and the vegetable compartment 7 are partitioned by a heat insulating wall 19. The heat insulating walls 18 and 19 are filled with a heat insulating material such as polystyrene foam.

  The refrigerator compartment 4 stores stored items in a refrigerator and is opened and closed by doors 4L and 4R made of a heat insulating material pivoted at the left and right ends, respectively. In the refrigerator compartment 4, shelves 4b, 4c, 4d, and 4e are arranged in order from the top. Below the shelf 4e, a chilled chamber 70 described later is provided on the right side when viewed from the front, and a water supply unit 17 is provided on the left side.

  The freezer compartments 21, 5, and 6 communicate with each other to store the stored items in a frozen state. The freezing chamber 21 constitutes an ice making chamber as will be described in detail later. The front surface of the freezer compartment 21 is opened and closed by a heat insulating door 21a pivotally supported at the left end, and the front surface of the freezer compartment 5 is opened and closed by a heat insulating door 5a pivotally supported at the right end. The front surface of the freezer compartment 6 is opened and closed by a drawer-type heat insulating door 6a.

  The vegetable compartment 7 refrigerates and stores stored items at a refrigeration temperature higher than that of the refrigerator compartment 4 and stores vegetables and fruits. The front of the vegetable compartment 7 is opened and closed by a drawer-type heat insulating door 7a.

  A machine room 30 is provided on the back side of the vegetable room 7. A compressor 31 for the refrigeration cycle is disposed in the machine room 30.

  The freezer compartment 21 is adjacent to the lower part of the refrigerator compartment 4 through the heat insulating wall 18, and an ice tray 22 and an ice storage container 24 are arranged. The ice tray 22 makes ice, and the ice storage container 24 stores the ice made by the ice tray 22. Accordingly, the freezer compartment 21 constitutes an ice making chamber that performs ice making.

  The water supply unit 17 provided in the lower part of the refrigerator compartment 4 includes a water supply tank 50, a water supply pipe 45, and a water supply pump 46. The water supply tank 50 is detachably provided and stores water. The water supply pipe 45 is led out from the water supply tank 50 and extends through the heat insulating wall 18 to the ice tray 22. The water supply pump 46 is arranged on the path of the water supply pipe 45, and water is supplied from the water supply tank 50 to the ice tray 22 by driving the water supply pump 46.

  A cool air passage 9 through which cool air flows is provided behind the freezer compartments 5 and 6. The cool air passage 9 is opened with a discharge port 9a and a return port 9b facing the freezer compartments 5 and 6. A cooler 11 serving as a low temperature part of the refrigeration cycle is disposed in the cold air passage 9. A blower fan 10 is disposed above the cooler 11.

  A cold air passage 8 communicating with the cold air passage 9 through a damper 28 is provided behind the refrigerator compartment 4. Discharge ports 8 a and 8 b are opened in the cold air passage 8. A plurality of discharge ports 8 a are provided in the refrigerator compartment 4, and the discharge ports 8 b are provided in the chilled chamber 70.

  The chilled chamber 70 is isolated from the refrigerator compartment 4 by the side wall 70a and the upper wall 70b. The discharge port 8 b is provided on the back surface of the chilled chamber 70. Since the discharge port 8b is provided upstream of the cool air passage 8 near the cooler 11, the inside of the chilled chamber 70 is maintained at a lower temperature than the surroundings. A gap is provided between the side wall 70 a and the heat insulating wall 18.

  In the refrigerator 1 having the above-described configuration, the cold air generated by heat exchange between the air flowing through the cold air passage 9 and the cooler 11 by driving the compressor 31 and the blower fan 10 is discharged from the discharge port 9a into the freezer compartments 5, 6, and 21. Discharged. The cold air discharged from the discharge port 9a flows through the freezer compartments 5, 6, 21 and returns to the cooler 11 through the return port 9b. Thereby, cooling in the freezer compartments 5, 6, and 21 is performed.

  When the damper 28 is opened, cold air flows from the cold air passage 9 into the cold air passage 8 and is discharged from the discharge ports 8a and 8b to the upper portion of the refrigerator compartment 4 and the chilled chamber 70, respectively. The cold air discharged from the discharge port 8a flows downward after flowing through the front of the refrigerator compartment 4 as shown by an arrow D1 (see FIG. 3). Then, the cold air flows into the chilled chamber 70 through the gap between the side walls 70a of the chilled chamber 70, and flows out from the return port (not shown) together with the cold air discharged from the discharge port 8b. Thereby, the inside of the refrigerator compartment 4 is cooled.

  The cold air flowing out from the return port flows through a communication passage (not shown) and is discharged into the vegetable compartment 7 through a discharge port (not shown). The cold air that has circulated through the vegetable compartment 7 returns to the cooler 11 through the return port 9c. Thereby, the inside of the vegetable compartment 7 is cooled.

  Below the cooler 11, a glass tube heater 150 for defrosting the cooler 11, an upper cover 151 covering the upper side of the heater 150, a lower cover 152 covering the lower side of the heater 150, and a drain A receptacle 153 is arranged.

In addition, the members for cooling the air inside the apparatus, such as the compressor 31, the cooler 11 including the cooling pipe 158 and the fins 159, the glass tube heater 150, the upper cover 151, the lower cover 152, the drain receiver 153, etc. This is referred to as a cooling system 20.
<Configuration for defrosting>

  Below, the structure for defrosting the cooler 11 concerning this Embodiment is demonstrated, referring FIGS. 4-7. In addition, FIG. 4 is a figure which shows the back inner side of the refrigerator 100 concerning this Embodiment. FIG. 5 is a side view showing the inside of the refrigerator 100 according to the present embodiment. FIG. 6 is an enlarged side view showing the vicinity of the heater 150 according to the present embodiment. FIG. 7 is an enlarged plan view showing the vicinity of the heater according to the present embodiment.

  In the present embodiment, cooler 11 includes a cooling pipe 158 and a plurality of fins 159. A glass tube heater 150 for defrosting the cooler 11 is disposed below the cooler 11. Below the glass tube heater 150, a resin drain receiver 153 for receiving water falling from the cooler 11 and a drain hose 154 for flowing water from the drain receiver 153 to the outside are arranged.

  Particularly in the present embodiment, an upper cover 151 is disposed between the heater 150 and the cooler 11, and a lower cover 152 is disposed between the heater 150 and the drain receiver 153.

  Thus, the light from the glass tube heater 150 does not directly hit the fins 159 of the cooler 11, and the fins 159 of the cooler 11 are safely warmed by the radiant heat of the upper cover 151 warmed by the glass tube heater 150. In addition, the light from the glass tube heater 150 does not directly hit the bottom surface of the resin drain receiver 153, and ice and spillage accumulated on the drain receiver 153 by the radiant heat of the lower cover 152 heated by the glass tube heater 150 are safe. To be warmed.

  The upper cover 151 is formed such that the length A in the front-rear direction is longer than the length in the front-rear direction of the heater 150 in a side view. That is, in plan view, the upper cover 151 extends to the front of the heater 150 and extends to the rear of the heater 150. As a result, water, ice and sleet falling from the cooler 11 are prevented from being directly applied to the heater 150.

  The lower cover 152 has a length B in the front-rear direction shorter than a length in the front-rear direction of the drain receiver 153 and a length C in the front-rear direction of the fin 159 in a side view. That is, in a plan view, the drain receiver 153 and the fins 159 extend to the front of the lower cover 152 and extend to the rear of the lower cover 152.

  The length A in the front-rear direction of the upper cover 151 is shorter than the length B in the front-rear direction of the lower cover 152 in a side view. That is, in plan view, the lower cover 152 extends to the front of the upper cover 151 and extends to the rear of the upper cover 151.

  In addition, it is preferable to make a cover smaller than FIG. For example, it is preferable that the length of the upper cover 151 in the side view (length when extended in a straight line) is shorter than the length of the lower cover 152 in the side view (length when extended in a straight line). And it is preferable that the length of the lower cover 152 in the side view (length when stretched in a straight line) is shorter than the length in the front-rear direction of the fin 159 in the side view. In addition, it is preferable that the light from the heater 150 is not directly applied to the fins 159 by the upper cover 151, and the light from the heater 150 is not directly applied to the bottom surface of the drain receiver 153 by the lower cover 152. The side of the heater 150 may be opened.

  As a result, there is a risk that ice or sleet falling from the fins 159 may fall directly to the drain receiver 153. However, the upper cover 151 and the lower cover 152 can be made smaller, so that the manufacturing cost can be reduced. .

  In this embodiment, the distance Y from the lower cover 152 to the drain receiver 153 is shorter than the distance X from the heater 150 to the fin 159. As a result, the radiant heat from the fins 159 heated by the infrared rays from the heater 150 melts the ice or sleet that has fallen on the drain receiver 153, and can be discharged smoothly.

  Furthermore, it is preferable that the distance Z from the heater 150 to the drain receiver 153 is shorter than the distance X from the heater 150 to the fin 159. As a result, the radiant heat from the fins 159 heated by the infrared rays from the heater 150 melts the ice or sleet that has fallen on the drain receiver 153, and can be discharged more smoothly.

  And it is preferable to make small angle (theta) of the lower end of the lower cover 152. FIG. As a result, even if the capacity of the heater 150 is increased, the fins 159 and the drain receiver 153 as surrounding members are not easily exposed to the direct light of the heater 150, so that the surrounding members can be warmed up safely. For example, the angle θ of bending of the lower cover 152 is preferably 70 degrees or more and 120 degrees or less.

As described above, in this embodiment, the upper cover 151 and the lower cover 152 are made smaller to reduce the manufacturing cost, while the fins 159 and the drain receiver 153 are safely warmed, and the space below the cooler 11 is further reduced. It is also possible to reduce the size.
<Second Embodiment>

  In the first embodiment, the bending angle θ of the lower cover 152 is formed to be about 120 degrees. However, in the present embodiment, as shown in FIG. 8, the angle θ of bending of the lower cover 152B is formed to be about 85 degrees. As in the present embodiment, the angle θ of bending of the lower cover 152B is preferably 70 degrees or more and 90 degrees or less. Accordingly, even if the capacity of the heater 150 is increased, surrounding members can be safely warmed without increasing the lower cover 152.

  More specifically, also in the present embodiment, the length A in the front-rear direction of the upper cover 151 is longer than the length in the front-rear direction of the heater 150 in a side view. That is, in plan view, the upper cover 151 extends to the front of the heater 150 and extends to the rear of the heater 150. As a result, water, ice and sleet falling from the cooler 11 are prevented from being directly applied to the heater 150.

  The lower cover 152B has a length B in the front-rear direction shorter than the length in the front-rear direction of the drain receiver 153 and shorter than the length C in the front-rear direction of the fin 159 in a side view. That is, in plan view, the drain receiver 153 and the fins 159 extend to the front of the lower cover 152B and extend to the rear of the lower cover 152B.

  The upper cover 151 has a length A in the front-rear direction shorter than a length B in the front-rear direction of the lower cover 152B in a side view. That is, in plan view, the lower cover 152B extends to the front of the upper cover 151 and extends to the rear of the upper cover 151.

  In addition, it is preferable to make the cover smaller than FIG. For example, the length of the upper cover 151 in the side view (length when extended straight) is preferably shorter than the length of the lower cover 152B in the side view (length extended in straight line). The length of the lower cover 152B in the side view (length when stretched straight) is preferably shorter than the length of the fin 159 in the front-rear direction in the side view. In addition, it is preferable that the light from the heater 150 is not directly applied to the fins 159 by the upper cover 151 and the light from the heater 150 is not directly applied to the bottom surface of the drain receiver 153 by the lower cover 152B. The side of the heater 150 may be opened.

  As a result, there is a risk that ice or sleet falling from the fins 159 may fall directly to the drain receiver 153. However, since the upper cover 151 and the lower cover 152B can be made smaller, the manufacturing cost can be reduced. .

  In the present embodiment, the distance Y from the lower cover 152B to the drain receiver 153 is shorter than the distance X from the heater 150 to the fin 159. As a result, the radiant heat from the fins 159 heated by the infrared rays from the heater 150 melts the ice or sleet that has fallen on the drain receiver 153, and can be discharged smoothly.

  Furthermore, it is preferable that the distance Z from the heater 150 to the drain receiver 153 is shorter than the distance X from the heater 150 to the fin 159. As a result, the radiant heat from the fins 159 heated by the infrared rays from the heater 150 melts the ice or sleet that has fallen on the drain receiver 153, and can be discharged more smoothly.

As described above, in the present embodiment, the upper cover 151 and the lower cover 152B are made smaller to reduce the manufacturing cost, while the fins 159 and the drain receiver 153 are safely warmed, and the space below the cooler 11 is further reduced. It is also possible to reduce the size.
<Third Embodiment>

  In the first embodiment, the lower cover 152 is formed in a V shape. However, in the present embodiment, as shown in FIG. 9, the lower cover 152 </ b> C is bent at a plurality of locations and formed in a U shape. Also in this case, the angle θ of opening the lower cover 152C upward is preferably 70 degrees or more and 120 degrees or less, more preferably 70 degrees or more and 90 degrees or less. Accordingly, even if the capacity of the heater 150 is increased, surrounding members can be safely warmed without increasing the lower cover 152.

  More specifically, also in the present embodiment, the length A in the front-rear direction of the upper cover 151 is longer than the length in the front-rear direction of the heater 150 in a side view. That is, in plan view, the upper cover 151 extends to the front of the heater 150 and extends to the rear of the heater 150. As a result, water, ice and sleet falling from the cooler 11 are prevented from being directly applied to the heater 150.

  The lower cover 152 </ b> C has a length B in the front-rear direction shorter than the length in the front-rear direction of the drain receiver 153 and shorter than the length C in the front-rear direction of the fin 159 in a side view. That is, in a plan view, the drain receiver 153 and the fins 159 extend to the front of the lower cover 152C and extend to the rear of the lower cover 152C.

  The upper cover 151 has a length A in the front-rear direction shorter than a length B in the front-rear direction of the lower cover 152C in a side view. That is, in plan view, the lower cover 152C extends to the front of the upper cover 151 and extends to the rear of the upper cover 151.

  In addition, it is preferable to make a cover smaller than FIG. For example, the length of the upper cover 151 in the side view (length when extended straight) is preferably shorter than the length of the lower cover 152C in the side view (length extended in straight line). The length of the lower cover 152C in the side view (length when stretched straight) is preferably shorter than the length of the fin 159 in the front-rear direction in the side view. In addition, it is preferable that the light from the heater 150 is not directly applied to the fins 159 by the upper cover 151 and the light from the heater 150 is not directly applied to the bottom surface of the drain receiver 153 by the lower cover 152C. . The side of the heater 150 may be opened.

  As a result, there is a risk that ice or sleet falling from the fins 159 may fall directly to the drain receiver 153. However, the upper cover 151 and the lower cover 152C can be made small, so that the manufacturing cost can be reduced. .

  In the present embodiment, the distance Y from the lower cover 152C to the drain receiver 153 is shorter than the distance X from the heater 150 to the fin 159. As a result, the radiant heat from the fins 159 heated by the infrared rays from the heater 150 melts the ice or sleet that has fallen on the drain receiver 153, and can be discharged smoothly.

  Furthermore, it is preferable that the distance Z from the heater 150 to the drain receiver 153 is shorter than the distance X from the heater 150 to the fin 159. As a result, the radiant heat from the fins 159 heated by the infrared rays from the heater 150 melts the ice or sleet that has fallen on the drain receiver 153, and can be discharged more smoothly.

As described above, in the present embodiment, the upper cover 151 and the lower cover 152C are made smaller to reduce the manufacturing cost, while the fins 159 and the drain receiver 153 are safely warmed, and the space below the cooler 11 is further reduced. It is also possible to reduce the size.
<Fourth embodiment>

  In the first embodiment, the lower cover 152 is formed in a V shape. However, in the present embodiment, as shown in FIG. 10, the lower cover 152D is formed in an arc shape. Accordingly, even if the capacity of the heater 150 is increased, surrounding members can be safely warmed without increasing the lower cover 152.

  More specifically, also in the present embodiment, the length A in the front-rear direction of the upper cover 151 is longer than the length in the front-rear direction of the heater 150 in a side view. That is, in plan view, the upper cover 151 extends to the front of the heater 150 and extends to the rear of the heater 150. As a result, water, ice and sleet falling from the cooler 11 are prevented from being directly applied to the heater 150.

  The lower cover 152D has a length B in the front-rear direction shorter than the length in the front-rear direction of the drain receiver 153 and a length C in the front-rear direction of the fin 159 in a side view. That is, in plan view, the drain receiver 153 and the fins 159 extend to the front of the lower cover 152D and extend to the rear of the lower cover 152D.

  The upper cover 151 has a length A in the front-rear direction shorter than a length B in the front-rear direction of the lower cover 152D in a side view. That is, in plan view, the lower cover 152D extends to the front of the upper cover 151 and extends to the rear of the upper cover 151.

  In addition, it is preferable to make the cover smaller than FIG. For example, it is preferable that the length of the upper cover 151 in the side view (length when extended straight) is shorter than the length of the lower cover 152D in the side view (length extended in straight line). And it is preferable that the length (length when extending straight) of lower cover 152D in side view is shorter than the length of the fin 159 in the front-back direction in side view. In addition, it is preferable that light from the heater 150 is not directly applied to the fins 159 by the upper cover 151 and light from the heater 150 is not directly applied to the bottom surface of the drain receiver 153 by the lower cover 152D. The side of the heater 150 may be opened.

  As a result, there is a possibility that ice or sleet falling from the fins 159 may fall directly to the drain receiver 153. However, since the upper cover 151 and the lower cover 152D can be reduced, the manufacturing cost can be reduced. .

  In the present embodiment, the distance Y from the lower cover 152D to the drain receiver 153 is shorter than the distance X from the heater 150 to the fin 159. As a result, the radiant heat from the fins 159 heated by the infrared rays from the heater 150 melts the ice or sleet that has fallen on the drain receiver 153, and can be discharged smoothly.

  Furthermore, it is preferable that the distance Z from the heater 150 to the drain receiver 153 is shorter than the distance X from the heater 150 to the fin 159. As a result, the radiant heat from the fins 159 heated by the infrared rays from the heater 150 melts the ice or sleet that has fallen on the drain receiver 153, and can be discharged more smoothly.

As described above, in the present embodiment, the upper cover 151 and the lower cover 152D are made smaller to reduce the manufacturing cost, while the fins 159 and the drain receiver 153 are safely warmed, and the space below the cooler 11 is further reduced. It is also possible to reduce the size.
<Summary of the above embodiments>

  In the first to fourth embodiments, the cooler 11 having the plurality of fins 159 attached thereto, the heater 150 disposed below the cooler 11, and the drain receiver disposed below the heater 150. 153, a cooling system 20 including an upper cover 151 disposed between the heater 150 and the cooler 11, and lower covers 152, 152B, 152C, and 152D disposed between the heater 150 and the drain receiver 153. Provided. The width B in the front-rear direction of the lower covers 152, 152B, 152C, 152D is shorter than the width C in the front-rear direction of the plurality of fins 159 in the side view, and the lower covers 152, 152B, 152C, 152D in the side view. The width A in the front-rear direction of the upper cover 151 is shorter than the width B in the front-rear direction.

  In the first to fourth embodiments, the distance X from the heater 150 to the fin 159 of the cooler 11 is greater than the distance Y from the lower covers 152, 152 B, 152 C, 152 D to the drain receiver 153. long.

  In the first to fourth embodiments, the distance X from the heater 150 to the fin 159 of the cooler 11 is longer than the distance Z from the heater 150 to the drain receiver 153.

  In the first to fourth embodiments, the angle θ of upward opening of the lower covers 152, 152B, 152C, 152D is 70 degrees or more and 120 degrees or less in a side view.

  In said 1st-4th embodiment, the refrigerator 100 provided with said cooling system 20 is provided.

  The embodiment disclosed this time should be considered as illustrative in all points and not restrictive. The scope of the present invention is defined by the terms of the claims, rather than the description above, and is intended to include any modifications within the scope and meaning equivalent to the terms of the claims.

1: Refrigerator 2: Heat insulation box 4: Refrigerating room 5: Freezer room 6: Freezing room 7: Vegetable room 8: Cold air passage 9: Cold air passage 10: Blower fan 11: Cooler 17: Water supply unit 20: Cooling system 21: Freezer room 22: Ice tray 24: Ice storage container 28: Damper 30: Machine room 31: Compressor 45: Water supply pipe 46: Water supply pump 50: Water supply tank 70: Chilled room 70a: Side wall 70b: Upper wall 100: Refrigerator 150: Glass Tube heater 151: Upper cover 152: Lower cover 152B: Lower cover 152C: Lower cover 152D: Lower cover 153: Drain receiver 154: Drain hose 158: Cooling pipe 159: Fin X: Distance Y: Distance Z: Distance θ: Angle

Claims (5)

A cooler with a plurality of fins attached thereto;
A heater disposed below the cooler;
A drain receiver disposed below the heater;
An upper cover disposed between the heater and the cooler;
A cooling system comprising a lower cover disposed between the heater and the drain receiver,
In side view, the width of the lower cover in the front-rear direction is shorter than the width in the front-rear direction of the plurality of fins,
The cooling system according to a side view, wherein the width of the upper cover in the front-rear direction is shorter than the width of the lower cover in the front-rear direction.   The cooling system according to claim 1, wherein a distance from the heater to the fin of the cooler is longer than a distance from the lower cover to the drain receiver.   The cooling system according to claim 1 or 2, wherein a distance from the heater to the fin of the cooler is longer than a distance from the heater to the drain receiver.   The cooling system according to any one of claims 1 to 3, wherein an angle of opening the lower cover upward is 70 degrees or more and 120 degrees or less in a side view.   A refrigerator comprising the cooling system according to any one of claims 1 to 4.

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