KR200194355Y1 - A waterspout device of low temperature evaportor for reprigerator - Google Patents

A waterspout device of low temperature evaportor for reprigerator Download PDF

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Publication number
KR200194355Y1
KR200194355Y1 KR2020000007959U KR20000007959U KR200194355Y1 KR 200194355 Y1 KR200194355 Y1 KR 200194355Y1 KR 2020000007959 U KR2020000007959 U KR 2020000007959U KR 20000007959 U KR20000007959 U KR 20000007959U KR 200194355 Y1 KR200194355 Y1 KR 200194355Y1
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South Korea
Prior art keywords
water
evaporator
cold air
ice
defrost water
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KR2020000007959U
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Korean (ko)
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여성동
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주식회사경동냉열산업
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B39/00—Evaporators; Condensers
    • F25B39/02—Evaporators
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B47/00—Arrangements for preventing or removing deposits or corrosion, not provided for in another subclass
    • F25B47/02—Defrosting cycles
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D21/00—Defrosting; Preventing frosting; Removing condensed or defrost water
    • F25D21/14—Collecting or removing condensed and defrost water; Drip trays
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B2339/00—Details of evaporators; Details of condensers
    • F25B2339/02—Details of evaporators
    • F25B2339/021—Evaporators in which refrigerant is sprayed on a surface to be cooled

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Removal Of Water From Condensation And Defrosting (AREA)

Abstract

본 고안은 냉동실에 설치한 저온증발기의 냉기발산판의 사이에 얼어붙은 서리나 얼음을 증발기의 상부에서 제상수(除霜水)를 분사하여 녹일시에 아래로 떨어지는 제상수를 받아 배출하는 물받이판을 제상수를 일정높이로 체류시킬 수 있는 구조로 구성한 냉동기용 저온증발기의 물받이판 제상수 체류장치에 관한 것이다.The present invention injects defrosted water from the upper part of the evaporator to the frozen frost or ice between the cold evaporating plates of the low-temperature evaporator installed in the freezer compartment. The present invention relates to a drip tray defrosting device for a low temperature evaporator for a refrigerator having a structure capable of retaining defrost water at a predetermined height.

입구(701)와 출구(702)를 형성한 케이스(7)를 냉동실(1)에 고정하여 케이스 (7)내에는 여러개의 냉기발산판(9)에 냉매관(10)을 지그재그로 배관하여서 된 증발기(8)와 송풍기(11)를 설치하여 동결 및 저장중인 물픔으로부터 발생된 수분을 송풍기(11)에 의해 장시간 작동에 의하여 냉기발산판(9)의 사이에 서리나 얼음이 많이 얼어붙게되면 냉기순환통로가 막혀 냉기의 순환이 불량하게됨으로 냉동기를 정지시키고 증발기의 상부에 설치된 살수박스(13)의 분사관(14)으로 제상수를 분사하여 서리나 얼음을 녹여 냉기순환이 원활하게 이루어지게하고,The case 7 having the inlet 701 and the outlet 702 is fixed to the freezer compartment 1, and the refrigerant tube 10 is zigzagly piped to a plurality of cold air diverging plates 9 in the case 7. When the evaporator 8 and the blower 11 are installed, moisture generated from the freezing and storing water is frozen by the blower 11 for a long time, and when a lot of frost or ice freezes between the cold air diverging plates 9, the cold air is circulated. As the passage is blocked, the circulation of the cold air becomes poor, and the freezer is stopped and the defrost water is sprayed into the spray pipe 14 of the sprinkling box 13 installed on the upper part of the evaporator to dissolve frost or ice so that the cold air circulation is smoothly performed.

아래로 떨어지게되는 제상수는 물받이판(12)에 모여지게하여 배출구(12A)로 배출시키게 되는데, 상기에 있어서 냉동기가 가동중 물받이판(12)에 얼어붙은 얼음도 제상수에 의하여 녹히게 되는 바,The defrost water falling down is collected in the drip tray 12 to be discharged to the outlet 12A. In this case, the ice frozen in the drip tray 12 during the operation of the freezer is also melted by the defrost water. ,

종래의 물받이판은 바닥이 동일 높이로 되고 물받이판에 떨어진 제상수는 일정높이로 오래 머물지 못하고 곧 배출구(12A)를 통하여 외부로 배출됨으로 냉동기가 가동중에 저온의 실내온도에 의해 물받이판에 누적된 얼음이 녹지 못하고 제상수의 배출을 방해하거나 넘치게됨과 아울러 증발기내의 방열관에 동파를 일으키는등의 문제점을 초래하게 되었다.Conventional drip tray plate has the same height and defrost water dropped on drip plate does not stay at a certain height for a long time and is discharged to the outside through outlet 12A. The ice melts and prevents or overflows the defrost water, and causes problems such as freezing of the heat pipes in the evaporator.

본 고안은 상기와 같은 문제점을 해결하기 위하여 물받이판(12)의 바닥을 경사상으로 형성하여 낮은 부분에 배출구(12A)를 형성하고 배출구(12A)부분에다 작은유출구멍(171)이 형성되고 여러개의 오버플로구멍(OVER FLOW HOLL)(172)을 형성한 수위조절구(17)를 지지간(121)에 끼워 고정시킬 수 있도록하여 냉기발산판(9)의 표면을 타고 흘러내린 제상수의 수위를 수위조절구(17)의 높이까지 체류시킬 수 있도록하고, 수위조절구(17)의 높이 이상으로 유입되는 제상수는 오버플로구멍(172)을 통하여 외부로 배출시킬 수 있도록 함으로서 물받이판(12)의 구석에 누적된 얼음을 신속히 녹일 수 있도록 한 것이다.In order to solve the above problems, the present invention forms the bottom of the drip tray 12 in an inclined shape to form a discharge port 12A at a lower portion, and a small discharge hole 171 is formed at the discharge port 12A portion, and several The water level of the defrost water flowing down the surface of the cold air diverging plate 9 so that the water level adjusting device 17 formed with the overflow hole 172 of the valve can be fixed to the support section 121. So that the water can be kept up to the height of the water level control unit 17, and the defrost water flowing into the level above the height of the water level control unit 17 can be discharged to the outside through the overflow hole 172. The ice accumulated in the corner of the) to quickly melt.

Description

냉동기용 저온증발기의 물받이판 제상수 체류장치{A WATERSPOUT DEVICE OF LOW TEMPERATURE EVAPORTOR FOR REPRIGERATOR}Drip tray defrosting device for low temperature evaporator for refrigerators {A WATERSPOUT DEVICE OF LOW TEMPERATURE EVAPORTOR FOR REPRIGERATOR}

본 고안은 냉동실에 설치한 저온증발기의 냉기발산판의 사이에 얼어붙은 서리나 얼음을 증발기의 상부에서 제상수(除霜水)를 분사하여 녹일시에 아래로 떨어지는 제상수를 받아 배출하는 물받이판을 제상수를 일정높이로 체류시킬 수 있는 구조로 구성한 냉동기용 저온증발기의 물받이판 제상수 체류장치에 관한 것이다.The present invention injects defrosted water from the upper part of the evaporator to the frozen frost or ice between the cold evaporating plates of the low-temperature evaporator installed in the freezer compartment. The present invention relates to a drip tray defrosting device for a low temperature evaporator for a refrigerator having a structure capable of retaining defrost water at a predetermined height.

입구(701)와 출구(702)를 형성한 케이스(7)를 냉동실(1)에 고정하여 케이스 (7)내에는 여러개의 냉기발산판(9)에 냉매관(10)을 지그재그로 배관하여서 된 증발기(8)와 송풍기(11)를 설치하여 동결 및 저장중인 물픔으로부터 발생된 수분을 송풍기(11)에 의해 장시간 작동에 의하여 냉기발산판(9)의 사이에 서리나 얼음이 많이 얼어붙게되면 냉기순환통로가 막혀 냉기의 순환이 불량하게됨으로 냉동기를 정지시키고 증발기의 상부에 설치된 살수박스(13)의 분사관(14)으로 제상수를 분사하여 서리나 얼음을 녹여 냉기순환이 원활하게 이루어지게하고,The case 7 having the inlet 701 and the outlet 702 is fixed to the freezer compartment 1, and the refrigerant tube 10 is zigzagly piped to a plurality of cold air diverging plates 9 in the case 7. When the evaporator 8 and the blower 11 are installed, moisture generated from the freezing and storing water is frozen by the blower 11 for a long time, and when a lot of frost or ice freezes between the cold air diverging plates 9, the cold air is circulated. As the passage is blocked, the circulation of the cold air becomes poor, and the freezer is stopped and the defrost water is sprayed into the spray pipe 14 of the sprinkling box 13 installed on the upper part of the evaporator to dissolve frost or ice so that the cold air circulation is smoothly performed.

아래로 떨어지게되는 제상수는 물받이판(12)에 모여지게하여 배출구(12A)로 배출시키게 되는데, 상기에 있어서 냉동기가 가동중 물받이판(12)에 얼어붙은 얼음도 제상수에 의하여 녹히게 되는 바,The defrost water falling down is collected in the drip tray 12 to be discharged to the outlet 12A. In this case, the ice frozen in the drip tray 12 during the operation of the freezer is also melted by the defrost water. ,

종래의 물받이판은 바닥이 동일 높이로 되고 물받이판에 떨어진 제상수는 오래 머물지 못하고 곧 배출구(12A)를 통하여 외부로 배출됨으로 냉동기가 가동중에 저온의 실내온도에 의해 물받이판에 누적된 얼음이 녹지 못하고 제상수의 배출을 방해하거나 제상수가 넘치게됨과 아울러 증발기내의 방열관에 동파를 일으키는등의 문제점을 초래하게 되었다.Conventional drip tray plate has the same height, and defrosted water dropped on drip tray does not stay long, and is discharged to outside through outlet 12A, so that ice accumulated on drip tray is melted by low temperature indoor temperature while the freezer is in operation. This causes problems such as impeding the discharge of the defrost water or overflowing the defrost water and causing freezing in the heat dissipation tube in the evaporator.

본 고안은 상기와 같은 문제점을 해결하기 위하여 물받이판(12)의 바닥을 경사상으로 형성하여 낮은 부분에 배출구(12A)를 형성하고 배출구(12A)부분에다 작은유출구멍(171)이 형성되고 여러개의 오버플로구멍(OVER FLOW HOLL)(172)을 형성한 수위조절구(17)를 지지간(121)에 끼워 고정시킬 수 있도록하여 냉기발산판(9)의 표면을 타고 흘러내린 제상수의 수위를 수위조절구(17)의 높이까지 체류시킬 수 있도록 하고, 수위조절구(17)의 높이 이상으로 유입되는 제상수는 오버플로구멍(172)을 통하여 외부로 배출시킬 수 있도록 함으로서 물받이판(12)의 구석에 누적된 얼음을 신속히 녹일 수 있도록 한 것이다.In order to solve the above problems, the present invention forms the bottom of the drip tray 12 in an inclined shape to form a discharge port 12A at a lower portion, and a small discharge hole 171 is formed at the discharge port 12A portion, and several The water level of the defrost water flowing down the surface of the cold air diverging plate 9 so that the water level adjusting device 17 formed with the overflow hole 172 of the valve can be fixed to the support section 121. To maintain the height of the water level regulating device 17, and the defrost water flowing into the height of the water level adjusting device 17 is discharged to the outside through the overflow hole 172, so that the drip board 12 The ice accumulated in the corner of the) to quickly melt.

도1은 본 고안의 설치도1 is an installation diagram of the subject innovation

도2는 본 고안의 사시도2 is a perspective view of the present invention

도3은 본 고안의 요부단면도.Figure 3 is a main cross-sectional view of the present invention.

도면의 주요 부분에 대한 부호의 설명Explanation of symbols for the main parts of the drawings

1 : 냉동실1: freezer

2 : 냉동기2: freezer

3 : 압축기3: compressor

4 : 응축기4: condenser

5 : 팽창변5: expansion valve

6 : 송풍기6: blower

7 : 케이스7: case

701 : 입구701: entrance

702 : 출구702: exit

8 : 증발기8: evaporator

9 : 냉기발산판9: cold air divergent plate

10 : 냉매관10: refrigerant tube

11 : 송풍기11: blower

12 : 물받이판12: drip board

12' : 바닥12 ': floor

12A : 배출구12A: Outlet

121 : 지지간121: support

13 : 살포박스13: spray box

14 : 분사관14: injection pipe

15 : 펌프15: Pump

16 : 물탱크16: water tank

17 : 수위조절구17: level control

171 : 유출구멍171: outflow hole

172 : 오버플로구멍172: overflow hole

도1은 본 고안의 설치도이고1 is an installation diagram of the present invention

도2는 본 고안의 요부사시도이며2 is a perspective view of the present invention

도3은 본 고안의 단면도로서,3 is a cross-sectional view of the present invention,

도1 내지 도3에 도시된 바와 같이,As shown in Figures 1-3,

냉동실(1)의 외부에는 압축기(3), 응축기(4)와 팽창변(5)및 송풍기(6)를 고정한 냉동기(2)를 설치하고, 냉동실(1)의 내부에는 입구(701)와 출구(702)를 형성한 케이스(7)를 고정하고 케이스(7)내에는 여러개의 냉기발산판(9)에 냉매관(10)을 배관한 증발기(8)와 송풍기(11)를 설치하고,Outside the freezer compartment 1, a compressor 3, a condenser 4, an expansion valve 5, and a freezer 2 fixed with a blower 6 are installed. Inside the freezer compartment 1, an inlet 701 and an outlet ( The case 7 having the 702 formed thereon is fixed, and in the case 7, an evaporator 8 and a blower 11 in which a refrigerant pipe 10 is piped to a plurality of cold air diverging plates 9 are installed.

케이스(7)의 하부에는 물받이판(12)을, 증발기(8)의 상부에는 살포박스(13)와 분사관(14)을 고정하여 물탱크(16)의 물을 펌프(15)에 의하여 분사 관(14)으로 공급시킬 수 있도록 한 것에 있어서,The water receiving plate 12 is fixed to the lower part of the case 7 and the spray box 13 and the spray pipe 14 are fixed to the upper part of the evaporator 8 so that the water of the water tank 16 is sprayed by the pump 15. In order to be able to supply the pipe 14,

물받이판(12)의 바닥(12')을 경사상으로 형성하여 배출구(12A)의 부분에다 유출구멍(171)이 형성되고 여러개의 오버플로구멍(172)을 형성한 수위조절구(17)를 지지간(121)에 끼워 고정시켜 제상수의 수위를 수위조절구(17)의 높이까지 체류시킬 수 있도록 함으로서 물받이판(12)의 얼음을 신속히 녹일 수 있도록 한 것이다.The bottom 12 'of the drip plate 12 is formed in an inclined shape, and the water level adjusting device 17 having the outlet hole 171 formed in the portion of the outlet port 12A and the overflow holes 172 is formed. It is to be able to quickly melt the ice of the drip plate 12 by allowing the water level of the defrosting water to be fixed to the support rod 121 so that the water level of the defrosting water stays up to the height of the water level adjusting unit 17.

이와 같이 된 본 고안은 냉동기(2)를 가동시키면 압축기(3)에서 압축된 냉매는 송풍기(6)의 송풍에 의해 응축기(4)의 열은 방열되고 송풍기(11)에 의하여 입구 (701)및 출구(702)로 순환되는 냉동실(1)내의 공기는 증발기(8)의 차거운 냉매에 의하여 냉각되어 냉동실(1)내의 온도는 점차 저온으로되고,In the present invention, when the refrigerator 2 is operated, the refrigerant compressed by the compressor 3 is dissipated from the heat of the condenser 4 by the blowing of the blower 6 and the inlet 701 by the blower 11. The air in the freezer compartment 1 circulated to the outlet 702 is cooled by the cool refrigerant of the evaporator 8 so that the temperature in the freezer compartment 1 becomes gradually low temperature,

장시간 가동으로 증발기(8)에 고정된 여러개의 냉기발산판(9)의 사이에 서리나 얼음이 달라붙어 냉기발산판(9)의 사이로 냉기순환이 원활하게 이루어지지 않을 때에는 냉동기(2)의 작동을 중지시키고 분사관(14)으로 제상수를 분사하여 서리나 얼음을 녹여 물받이판(12)의 배출구(12A)를 통하여 배수시킨 후 다시 냉동기(2)를 가동하여 냉동실(1)의 온도를 저온으로 냉각시키게 되는 것은 종래와 동일한 바,When the frost or ice is stuck between the several cold air diverging plates 9 fixed to the evaporator 8 by the long time operation, and the cold air circulation is not smoothly performed between the cold diverging plates 9, the operation of the refrigerator 2 is stopped. Stop and spray defrost water into the injection pipe 14 to melt frost or ice to drain through the outlet 12A of the drip tray 12, and then operate the freezer 2 again to cool the temperature of the freezer compartment 1 to low temperature. It's the same as before,

상기에 있어서 본 고안은 물받이판(12)의 바닥(12')을 경사상으로 형성하여 배출구(12A)의 부분에다 작은유출구멍(17)이 형성되고 여러개의 오버플로구멍(172)을 형성한 수위조절구(17)를 지지간(121)에 끼워 고정하였으므로 물받이판(12)으로 흘러내린 제상수는 수위조절구(17)의 높이까지 상승된 수면으로 유지되고 수위조절구(17)의 높이 이상으로 넘치는 제상수는 여러개의 오버플로구멍(172)과 배출구 (12A)를 통하여 외부로 배출된다.In the above, the present invention forms a bottom 12 'of the drip tray 12 in an inclined shape so that a small outflow hole 17 is formed in a portion of the outlet 12A, and a plurality of overflow holes 172 are formed. Since the water level adjusting unit 17 is fixed to the support rod 121, the defrost water flowing down into the drip tray 12 is maintained at the water level raised to the height of the water level adjusting unit 17 and the height of the water level adjusting unit 17 is maintained. The defrost water overflowed above is discharged to the outside through the plurality of overflow holes 172 and the discharge port 12A.

이에 따라 물받이판(12)의 구석등에 얼어붙은 얼음은 수위조절구(17)의 높이로 유지되는 제상수에 의하여 신속히 녹게되며 제상작동 완료후의 물받이판(12)에 남는 잔여제상수는 배출구(12A)보다 매우 작게 형성한 유출구멍(171)을 통하여 전량 외부로 배출된다.Accordingly, the ice frozen in the corner of the drip tray 12 is quickly melted by the defrost water maintained at the height of the water level control opening 17, the remaining defrost water remaining on the drip tray 12 after completion of the defrost operation is discharged (12A) Through the outlet hole 171 formed very small than the total amount is discharged to the outside.

그리고 점검이나 청소시에는 수위조절구(17)를 지지간(121)에서 간단히 분리하여 행하면 된다.In the case of inspection or cleaning, the water level adjusting device 17 may be simply removed from the support section 121.

이와 같이 된 본 고안은 물받이판(12)의 바닥(12')을 경사상으로 형성하여 배출구(12A)의 부분에다 작은유출구멍(171)이 형성되고, 여러개의 오버플로구멍 (172)을 형성한 수위조절구(17)를 지지간(121)에 끼워 고정하여 제상수를 수위조절구(17) 높이까지 체류시킬 수 있도록 하였으므로 물받이판(12)에 얼어붙은 얼음을 신속하게 녹일 수 있는 효과가 있다.According to the present invention, the bottom 12 'of the drip tray 12 is inclined to form a small outflow hole 171 in a portion of the outlet 12A, and a plurality of overflow holes 172 are formed. One level controller 17 is fixed to the support rod 121 so that the defrost water can stay up to the height of the level controller 17, so that the frozen ice on the drip tray 12 can be quickly dissolved. have.

Claims (1)

냉동실(1)의 외부에는 압축기(3), 응축기(4)와 팽창변(5)및 송풍기(6)를 고정한 냉동기(2)를 설치하고 냉동실(1)의 내부에는 입구(701)와 출구(702)를 형성한 케이스(7)를 고정하고 케이스(7)내에는 여러개의 냉기발산판(9)에 냉매관(10)을 배관한 증발기(8)와 송풍기(11)를 설치하고,Outside the freezer compartment 1, a compressor 3, a condenser 4, an expansion valve 5, and a refrigerator 2 fixed with a blower 6 are installed, and an inlet 701 and an outlet 702 are inside the freezer compartment 1. The case (7) is formed and the evaporator (8) and the blower (11) in which the refrigerant pipe (10) is piped to the plurality of cold air diverging plates (9) are installed in the case (7). 케이스(7)의 하부에는 물받이판(12)을, 증발기(8)의 상부에는 살포박스(13)와 분사관(14)을 고정하여 물탱크(16)의 물을 펌프(15)에 의하여 분사관(14)으로 공급시킬 수 있도록 한 것에 있어서,The drip plate 12 is attached to the lower part of the case 7 and the sprinkling box 13 and the injection pipe 14 are fixed to the upper part of the evaporator 8 so that the water of the water tank 16 is separated by the pump 15. In being able to supply to the officer 14, 물받이판(12)의 바닥(12')을 경사상으로 형성하여 배출구(12A)의 부분에다 유출구멍(171)이 형성되고 여러개의 오버플로구멍(172)을 형성한 수위조절구(17)를 지지간(121)에 끼워 고정시켜 제상수를 수위조절구(17)의 높이까지 체류시킬 수 있도록 한 냉동기용 저온증발기의 물받이판 제상수 체류장치.The bottom 12 'of the drip plate 12 is formed in an inclined shape, and the water level adjusting device 17 having the outlet hole 171 formed in the portion of the outlet port 12A and the overflow holes 172 is formed. A water holding plate defrost water retention apparatus of a low temperature evaporator for a refrigerator, which is fitted into the supporting rod 121 and is fixed so that the defrost water can be maintained up to the height of the water level controller 17.
KR2020000007959U 2000-03-21 2000-03-21 A waterspout device of low temperature evaportor for reprigerator KR200194355Y1 (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109708331A (en) * 2019-03-06 2019-05-03 泱焓冷链系统(江苏)有限公司 A kind of refrigeration system directly made ice for multiple groups large size

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109708331A (en) * 2019-03-06 2019-05-03 泱焓冷链系统(江苏)有限公司 A kind of refrigeration system directly made ice for multiple groups large size

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