KR100473945B1 - Refrigerator with efficient air circulation system - Google Patents
Refrigerator with efficient air circulation system Download PDFInfo
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- KR100473945B1 KR100473945B1 KR10-2001-0070628A KR20010070628A KR100473945B1 KR 100473945 B1 KR100473945 B1 KR 100473945B1 KR 20010070628 A KR20010070628 A KR 20010070628A KR 100473945 B1 KR100473945 B1 KR 100473945B1
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- fan
- axial
- refrigerator
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Classifications
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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
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D17/00—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces
- F25D17/04—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating air, e.g. by convection
- F25D17/06—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating air, e.g. by convection by forced circulation
- F25D17/08—Arrangements for circulating cooling fluids; Arrangements for circulating gas, e.g. air, within refrigerated spaces for circulating air, e.g. by convection by forced circulation using ducts
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/40—Casings; Connections of working fluid
- F04D29/52—Casings; Connections of working fluid for axial pumps
- F04D29/54—Fluid-guiding means, e.g. diffusers
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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
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D2317/00—Details or arrangements for circulating cooling fluids; Details or arrangements for circulating gas, e.g. air, within refrigerated spaces, not provided for in other groups of this subclass
- F25D2317/06—Details or arrangements for circulating cooling fluids; Details or arrangements for circulating gas, e.g. air, within refrigerated spaces, not provided for in other groups of this subclass with forced air circulation
- F25D2317/063—Details or arrangements for circulating cooling fluids; Details or arrangements for circulating gas, e.g. air, within refrigerated spaces, not provided for in other groups of this subclass with forced air circulation with air guides
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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
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D2317/00—Details or arrangements for circulating cooling fluids; Details or arrangements for circulating gas, e.g. air, within refrigerated spaces, not provided for in other groups of this subclass
- F25D2317/06—Details or arrangements for circulating cooling fluids; Details or arrangements for circulating gas, e.g. air, within refrigerated spaces, not provided for in other groups of this subclass with forced air circulation
- F25D2317/067—Details or arrangements for circulating cooling fluids; Details or arrangements for circulating gas, e.g. air, within refrigerated spaces, not provided for in other groups of this subclass with forced air circulation characterised by air ducts
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Cold Air Circulating Systems And Constructional Details In Refrigerators (AREA)
Abstract
본 발명은 냉장실 측으로의 냉기 유동이 효율적으로 이루어지도록 하는 냉장고에 관한 것으로, 본 발명에 따른 냉장고는 송풍팬 어셈블리(30)의 슈라우드(36)의 외곽에서 슈라우드(36)와 동일한 곡률로 만곡된 컷오프를 구성함으로써, 축류팬(32)의 원심력에 의해 와류가 형성되는 것을 방지하는 유로 스크롤(40)이 구비된 것을 특징으로 하여 이루어진다.The present invention relates to a refrigerator for efficient cold air flow to the refrigerating chamber side, and the refrigerator according to the present invention has a cutoff curved at the same curvature as the shroud 36 at the outside of the shroud 36 of the blower fan assembly 30. The flow path scroll 40 which prevents the formation of vortices by the centrifugal force of the axial flow fan 32 is provided by the structure.
여기서, 상기 유로 스크롤(40)의 컷오프 설치각도( θ)는 축류팬(32)의 수직중심선을 기준으로 냉기분배 덕트(22) 측으로 25 ~ 65° 이고, 축류팬 반지름(R) 대비 컷오프 설치반지름(Rc)의 비율(Rs)은 1.23 ~ 1.33 인 것을 특징으로 한다.Here, the cutoff installation angle θ of the flow path scroll 40 is 25 to 65 ° toward the cold air distribution duct 22 based on the vertical center line of the axial fan 32, and the cutoff installation radius compared to the axial fan radius R. The ratio Rs of Rc is 1.23 to 1.33.
상술한 바와 같은 본 발명에 의하면 컷오프가 형성된 유로 스크롤에 의해 축류팬 상방에서의 와류현상이 감소되어, 냉기분배 덕트 측으로의 냉기유동압력이 높아지기 때문에 축류팬의 회전속도를 과도하게 높이지 않고도 냉장실측으로 충분한 냉기를 공급할 수 있게 된다.According to the present invention as described above, the vortex phenomenon above the axial flow fan is reduced by the flow path scroll formed with the cutoff, and the cold air flow pressure to the cold air distribution duct is increased, so that the rotational speed of the axial flow fan is not increased excessively. It is possible to supply sufficient cold air.
따라서, 냉장고의 소비전력이 줄어드는 등, 냉장고의 상품성이 향상된다는 이점이 있다. Therefore, there is an advantage that the commercial property of the refrigerator is improved, such as the power consumption of the refrigerator is reduced.
Description
본 발명은 냉장고에 관한 것으로서, 보다 상세하게는 냉장실 측으로의 냉기 유동이 효율적으로 이루어지도록 하는 냉장고에 관한 것이다.The present invention relates to a refrigerator, and more particularly, to a refrigerator for efficient cold air flow to the refrigerator compartment side.
냉장고는 음식물 등을 냉동시키거나, 냉장보관하기 위해 사용되는 것으로서, 도 1, 2에 나타난 것과 같이 냉동실(101)과 냉장실(102)로 분리된 수납공간을 형성하는 케이스(10) 및 상기 케이스(10)의 일측에 장착되어 냉동실(101)과 냉장실(102)을 개폐하는 냉동, 냉장실 도어(12)와, 압축기(14), 응축기(16) 및 증발기(18) 등과 같이 냉동사이클을 이루어 냉기를 형성하는 기기들을 포함하여 구성되어 있다.The refrigerator is used to freeze or refrigerate food or the like, and as illustrated in FIGS. 1 and 2, a case 10 and a case 10 forming a storage space separated into a freezing compartment 101 and a refrigerating compartment 102. 10 is mounted on one side of the freezing compartment 101 and the refrigerating compartment 102 to open and close the refrigerating and refrigerating compartment door 12, the refrigeration cycle, such as the compressor 14, the condenser 16 and the evaporator 18, etc. It is configured to include the forming device.
이러한 냉장고에서는 압축기(14)에 의해 저온 저압의 기상 냉매가 고온 고압으로 압축되고, 압축된 고온 고압의 기상 냉매가 응축기(16)를 지나는 과정에서 냉각 응축되어 고압의 액상으로 전환되며, 고압의 액체상태로 된 냉매는 모세관(미도시)을 통과하면서 그 온도와 압력이 낮아진 다음, 계속해서 증발기(18)에서 저온 저압의 기체상태로 변하면서 주위로부터 열을 빼앗아 그 주위의 공기를 냉각시키게 된다. In such a refrigerator, the low-temperature low-pressure gaseous refrigerant is compressed to high temperature and high pressure by the compressor 14, and the compressed high-temperature high-pressure gas phase refrigerant is cooled and condensed in the course of passing through the condenser 16 to be converted into a high-pressure liquid phase. The refrigerant in the state passes through a capillary tube (not shown), and its temperature and pressure are lowered. Then, the refrigerant is changed into a gaseous state of low temperature and low pressure in the evaporator 18 to take heat from the surroundings to cool the air around it.
한편, 냉장고에는 증발기(18) 주위에서 형성된 냉기를 냉동, 냉장실(101)(102)을 거쳐 순환시키기 위한 냉기순환유로가 구비되어 있는데, 상기 냉기순환유로는 증발기(18)가 설치된 증발기실(181)의 앞쪽에 구성된 냉동실 덕트(20)와, 상기 냉동실 덕트(20)로부터 냉장실(102)로 이어진 냉기분배 덕트(22)와, 상기 냉기분배 덕트(22)와 연결되며 냉장실(102)에 구성된 냉장실 덕트(24) 및, 냉동실(101)과 냉장실(102) 사이에 형성되어 증발기실(181)로 연결된 냉기흡입 덕트(26)로 이루어져 있다.On the other hand, the refrigerator is provided with a cold air circulation passage for circulating the cold air formed around the evaporator 18 through the refrigerating and refrigerating chamber 101, 102, the cold air circulation passage is the evaporator chamber 181, the evaporator 18 is installed Refrigeration chamber duct 20 formed in front of the), the cold air distribution duct 22 from the freezer compartment duct 20 to the cold compartment 102, the cold compartment connected to the cold air distribution duct 22 and configured in the refrigerator compartment 102 A duct 24 and a cold air suction duct 26 formed between the freezing chamber 101 and the refrigerating chamber 102 and connected to the evaporator chamber 181.
냉동실 덕트(20) 및 냉장실 덕트(24)에는 다수개의 냉기토출구(20a)(24a)가 형성되어 있다.A plurality of cold air discharge ports 20a and 24a are formed in the freezer compartment duct 20 and the refrigerating compartment duct 24.
그리고, 상기 증발기실(181)의 일측에는 냉동실 덕트(20)측으로 송풍작용을 행하는 송풍팬 어셈블리(30)가 구비되어 있는데, 상기 송풍팬 어셈블리(30)는 축류팬(32) 및 이를 회전시키는 구동모터(34)와, 축류팬(32) 외곽의 슈라우드(36)로 이루어져 있다. In addition, one side of the evaporator chamber 181 is provided with a blower fan assembly 30 for blowing to the freezer compartment duct 20 side, the blower fan assembly 30 is the axial flow fan 32 and the drive to rotate it It consists of a motor 34 and a shroud 36 outside the axial fan 32.
이와 같은 냉기순환유로에 의하면 증발기실(181)에서 형성된 냉기(도면상 화살표시)가 축류팬(32)의 회전작동에 의해 냉동실 덕트(20)로 유입되고, 냉동실 덕트(20)로 유입된 냉기는 냉기토출구(20a)를 통해 냉동실(101)로 토출됨과 더불어, 냉기분배 덕트(22)를 타고 냉장실 덕트(24)로 공급된 다음, 냉장실(102)내로 토출되어 냉동, 냉장작용을 행하게 된다.According to the cold air circulation passage as described above, the cold air (when an arrow in the drawing) formed in the evaporator chamber 181 flows into the freezer compartment duct 20 by the rotation operation of the axial fan 32, and the cold air introduced into the freezer compartment duct 20. Is discharged to the freezing chamber 101 through the cold air discharge port 20a, supplied to the refrigerating chamber duct 24 by the cold air distribution duct 22, and then discharged into the refrigerating chamber 102 to perform the freezing and refrigerating functions.
그리고, 냉동, 냉장실(101)(102)로 토출된 냉기는 냉동실(101) 하단 및 냉장실(102) 상단의 냉기흡입구(26a)를 통해 냉기흡입 덕트(26)로 유입된 다음, 증발기실(181)로 유동됨으로써 재차냉각되는 순환작동을 반복적으로 진행하게 된다. The cold air discharged into the freezing and refrigerating chambers 101 and 102 is introduced into the cold air suction duct 26 through the cold air suction opening 26a at the bottom of the freezing chamber 101 and the top of the refrigerating chamber 102, and then the evaporator chamber 181. By repeating the flow, the cooling operation is repeatedly performed.
한편, 이와 같은 냉장고의 냉기순환유로에 의하면, 냉동실 덕트(20)와 냉장실 덕트(24)를 연결하는 냉기분배 덕트(22)의 통기면적이 좁고, 굴곡이 심하기 때문에 도 3에 나타난 것과 같이 냉동실 덕트(20)에서 냉장실 덕트(24)로 유동하는 냉기(도면상 화살표시)가 큰 유로저항을 받게 된다.On the other hand, according to the cold air circulation path of the refrigerator, the freezer duct 20 and the cold air distribution duct 22 connecting the refrigerating chamber duct 24, because the ventilation area is narrow and the bending is severe, as shown in Figure 3 freezer duct The cold air flowing in the refrigerating chamber duct 24 at (20) receives a large flow path resistance.
또한, 축류팬(32)의 작동특성상 증발기실(181)에서 냉동실 덕트(20)로 토출되는 냉기가 원심력에 의해 축류팬(32)의 반경방향으로 강하게 유동됨으로써, 여유공간이 부족한 축류팬(32)의 상방에서는 와류가 형성된다.In addition, the cold air discharged from the evaporator chamber 181 to the freezing chamber duct 20 by the centrifugal force flows strongly in the radial direction of the axial fan 32 due to the operating characteristics of the axial fan 32, thereby causing an insufficient axial flow fan 32. Above), a vortex is formed.
이러한 와류현상에 의하면 냉동실 덕트(20)로 토출되는 냉기의 유동효율이 떨어지며, 축류팬(32)의 회전속도에 따라 와류의 세기 또한 강해지므로, 축류팬(32)의 회전속도가 일정수준 이상이 되면, 강한 와류가 형성되어 축류팬(32)의 회전작동에 방해가 되기도 하고, 경우에 따라서는 냉기가 냉장실(102)에서 냉동실(101)로 역유동하는 현상이 발생하기도 한다.According to the vortex phenomenon, the flow efficiency of the cold air discharged to the freezing chamber duct 20 decreases, and the strength of the vortex becomes stronger according to the rotational speed of the axial flow fan 32, so that the rotational speed of the axial flow fan 32 is higher than a predetermined level. In this case, a strong vortex is formed to hinder the rotational operation of the axial fan 32, and in some cases, a phenomenon in which cold air flows back from the refrigerating chamber 102 to the freezing chamber 101 may occur.
따라서, 상술한 바와 같은 종래기술에 의하면 냉동실 냉기유동량 대비 냉장실 냉기유동량 비율(80 : 20)이 적절하게 유지되지 못하고, 냉장실(102)측으로의 냉기유동량이 감소되기 때문에 냉장실(102)에서 필요하는 냉기량을 만족시키기 위해서는 축류팬(32)의 회전속도를 높여야 하며, 이에 따라 냉장고의 소비전력 및 작동소음이 증가한다는 문제점이 발생한다.Therefore, according to the prior art as described above, since the ratio of the refrigerator compartment cold air flow rate to the refrigerator compartment cold air flow amount 80: 20 is not properly maintained, and the amount of cold air flow to the refrigerating compartment 102 side is reduced, the cold air required in the refrigerating compartment 102 is reduced. In order to satisfy the amount, the rotational speed of the axial fan 32 must be increased, thereby causing a problem that power consumption and operating noise of the refrigerator are increased.
본 발명은 상기한 종래 문제점을 해결하고자 안출된 것으로서, 축류팬의 상방에 유로 스크롤이 구성됨으로써 냉동실 덕트에서의 와류현상이 감소되고, 냉장실로의 냉기유동효율이 향상되는 냉장고의 제공을 목적으로 한다.SUMMARY OF THE INVENTION The present invention has been made to solve the above-described problems, and an object of the present invention is to provide a refrigerator in which a vortex phenomenon in a freezer compartment duct is reduced by improving a flow path scroll above the axial flow fan and improving the flow efficiency of the cold air into the refrigerating compartment. .
상기 목적을 달성하기 위하여 제공되는 본 발명에 따른 냉장고는, 축류팬과, 상기 축류팬을 회전시키는 구동모터와, 축류팬 외곽의 슈라우드로 구성되며, 냉동실 후면의 증발기실 일측에 구비된 송풍팬 어셈블리 및,증발기실의 앞쪽에 구성된 냉동실 덕트와, 상기 냉동실 덕트로부터 냉장실로 이어진 냉기분배 덕트와, 상기 냉기분배 덕트와 연결되며 냉장실 내측에 구성된 냉장실덕트 및, 냉동실과 냉장실 사이에 형성되어 증발기실로 연결된 냉기흡입덕트로 구성된 냉기순환유로를 포함하는 냉장고에 있어서;상기 축류팬의 원심력에 의해 축류팬 상방으로 와류가 형성되는 것을 방지하기 위해, 상기 축류팬의 상방에는 상기 슈라우드의 외곽에서 상기 슈라우드와 동일한 곡률로 외주면이 만곡된 컷오프가 형성된 유로 스크롤이 구비된 것을 특징으로 하여 이루어진다.Refrigerator according to the present invention provided to achieve the above object, the axial fan, a drive motor for rotating the axial fan, and a shroud outside the axial flow fan, a blower fan assembly provided on one side of the evaporator chamber in the rear of the freezing chamber And a freezer compartment duct configured in front of the evaporator chamber, a cold air distribution duct connected to the refrigerating compartment from the freezer compartment duct, a refrigerating chamber duct connected to the cold air distribution duct and formed inside the refrigerating compartment, and a cold air formed between the freezer compartment and the refrigerating compartment and connected to the evaporator chamber. A refrigerator comprising a cold air circulation passage composed of a suction duct; To prevent vortices from being formed above the axial fan by the centrifugal force of the axial fan, the curvature of the upper part of the axial fan is the same as that of the shroud outside the shroud. And a flow path scroll having a cutoff having a curved outer circumferential surface thereof is provided. It is done by
여기서, 상기 유로 스크롤의 컷오프 설치각도는 축류팬의 수직중심선을 기준으로 냉기분배 덕트 측으로 25 ~ 65° 이고, 축류팬의 반지름 대비 컷오프 설치반지름 비율은 1.23 ~ 1.33 인 것을 특징으로 한다.Here, the cutoff installation angle of the flow path scroll is 25 to 65 ° toward the cold air distribution duct on the basis of the vertical center line of the axial fan, and the ratio of the cutoff installation radius to the radius of the axial fan is 1.23 to 1.33.
이하, 본 발명의 실시예를 첨부된 도 4와 도 5를 참조로 하여 상세하게 설명하며, 본 발명의 내용 중 종래구성과 동일한 부분에 대해서는 동일한 부호를 부여하기로 한다.Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to FIGS. 4 and 5, and the same reference numerals will be given to the same parts as those in the prior art.
본 발명의 실시예에 따른 냉장고는 도 4에 나타난 것과 같이 축류팬(32)의 상방에 원심력에 의해 와류가 형성되는 것을 방지하는 유로 스크롤(40)이 구비된 것을 특징으로 하여 이루어진다.여기서, 상기 유로 스크롤(40)은 축류팬(32)의 상방측 슈라우드(36)의 외곽에서 상기 슈라우드(36)와 동일한 곡률로 만곡된 컷오프(cut-off)를 구성하는 형태로 이루어지는데, 상기 유로 스크롤(40)의 컷 오프는 축류팬(32)의 상방측이고 슈라우드(36)의 외곽 상방측에 형성되며, 축류팬 상방측 컷오프의 곡률 즉, 컷오프의 외주면 곡률이 슈라우드(36)의 외곽 곡률과 동일하게 만곡(彎曲)되어 형성된다. As shown in FIG. 4, the refrigerator according to the embodiment of the present invention is provided with a flow passage scroll 40 which prevents the vortex from being formed by the centrifugal force above the axial fan 32. Euro scroll 40 scrolls the flow path through interaction types that are part of the cut-off (cut-off), curved with the same curvature as the shroud 36, at a periphery of the upper side of the shroud 36 of the axial flow fan 32 ( The cutoff of 40 is formed on the upper side of the axial fan 32 and on the outer side of the shroud 36, and the curvature of the cutoff on the upper side of the axial fan, that is, the curvature of the outer circumferential surface of the cutoff, is equal to the outer curvature of the shroud 36. It is curved and formed.
그리고, 상기 유로 스크롤(40)의 컷오프 특성을 결정하는 인자로서는 컷오프 반지름(Cr), 컷오프 설치각도( θ), 컷오프 설치반지름(Rc), 축류팬 반지름(R)과 컷오프 설치반지름(Rc)의 비율(Rs) 등이 있다.As a factor for determining the cutoff characteristics of the flow path scroll 40, the cutoff radius Cr, the cutoff installation angle θ, the cutoff installation radius Rc, the axial fan radius R and the cutoff installation radius Rc Ratio Rs.
상기 컷오프 반지름(Cr)은 컷오프의 내주면과 접하는 가상중심원(도면상 가상선 표시)의 반지름이며, 컷오프 설치각도(θ)는 가상중심원의 중심점과 축류팬(32)의 수직기준선(도면상 Y축)이 이루는 각도이며, 컷오프 설치반지름(Rc)은 축류팬(32)의 중심점에서 컷오프의 가상중심원 중심점 간의 거리이다. The cutoff radius (Cr) is the radius of the virtual center circle (shown in the virtual line) in contact with the inner peripheral surface of the cutoff, the cutoff installation angle (θ) is the center of the virtual center circle and the vertical reference line of the axial fan (32) Y-axis), and the cutoff installation radius Rc is the distance between the center point of the axial fan 32 and the center point of the virtual center of the cutoff.
그리고, 축류팬 반지름(R)대비 컷오프 설치반지름(Rc)의 비율(Rs)은, 컷오프 설치반지름(Rc)을 축류팬 반지름(R)으로 나눈 값(Rc/R)이다.The ratio Rs of the cutoff installation radius Rc to the axial fan radius R is a value Rc / R obtained by dividing the cutoff installation radius Rc by the axial fan radius R.
본 실시예에 의하면 상기 컷오프는 축류팬(32)의 수직기준선을 기준으로 냉기분배 덕트(22)측(도면상 우측)에 형성되어, 컷오프 설치각도( θ)가 25 ~ 65° 인 것을 특징으로 하여 이루어진다.According to this embodiment, the cutoff is formed on the cold air distribution duct 22 side (right side in the drawing) with respect to the vertical reference line of the axial fan 32, and the cutoff installation angle θ is 25 to 65 °. It is done by
이른 실험결과에 따른 것으로 도 5의 a에 나타난 것과 같이 컷오프 설치각도( θ)가 25 ~ 65°일 때 냉장실(102)로 공급되는 냉기량이 증가하는 것을 알 수 있다.As shown in FIG. 5A, it can be seen that the amount of cold air supplied to the refrigerating compartment 102 increases when the cutoff installation angle θ is 25 to 65 °.
또한, 본 실시예에 의하면 축류팬 반지름(R) 대비 컷오프 설치반지름(Rc)의 비율(Rs)이 1.23 ~ 1.33 이 되는데, 이 역시 실험결과에 따른 것으로, 도 5의 b에 나타난 것과 같이 컷오프 설치각도( θ)가 45°인 상태에서 컷오프 설치반지름(Rc) 증가에 따른 냉장실(102)의 풍량변화를 측정한 결과 축류팬 반지름(R) 대비 컷오프 설치반지름(Rc)의 비율(Rs)이 1.23 ~ 1.33 일 때 냉장실(102)로 공급되는 냉기량이 증가하는 것을 알 수 있다.In addition, according to the present embodiment, the ratio Rs of the cutoff installation radius Rc to the axial fan radius R becomes 1.23 to 1.33, which is also based on the experimental result, as shown in b of FIG. 5. As a result of measuring the air volume change of the refrigerating chamber 102 according to the increase of the cutoff installation radius Rc with the angle θ at 45 °, the ratio Rs of the cutoff installation radius Rc to the axial fan radius R was 1.23. When it is ~ 1.33 it can be seen that the amount of cold air supplied to the refrigerating chamber 102 is increased.
여기서, 상기 축류팬 반지름(R) 대비 컷오프 설치반지름(Rc)의 비율(Rs)은 축류팬(32)의 작동소음과도 밀접한 관계가 있는데, 축류팬 반지름(R) 대비 컷오프 설치반지름(Rc)의 비율(Rs)이 1.23 미만이 되면 축류팬(32)과 컷오프 사이의 간섭에 의해 날개깃 통과 주파수(BPF: Blade Passing Frequency)가 증가하여 결과적으로 소음이 커지게 된다.Here, the ratio (Rs) of the cutoff installation radius (Rc) to the axial fan radius (R) is also closely related to the operating noise of the axial fan (32), the cutoff installation radius (Rc) relative to the axial fan radius (R). When the ratio Rs is less than 1.23, the blade passing frequency (BPF) increases due to the interference between the axial fan 32 and the cutoff, resulting in a loud noise.
따라서, 상술한 바와 같은 본 발명의 실시예에 의하면 컷오프가 형성된 유로 스크롤(40)에 의해 축류팬(32) 상방에서의 와류현상이 감소되어, 냉기분배 덕트(22) 측으로의 냉기유동압력이 높아지기 때문에 축류팬(32)의 회전속도를 과도하게 높이지 않고도 냉장실(102)측으로 충분한 냉기를 공급할 수 있게 된다.Therefore, according to the embodiment of the present invention as described above, the vortex phenomenon above the axial flow fan 32 is reduced by the flow path scroll 40 having the cutoff, so that the cold air flow pressure toward the cold air distribution duct 22 increases. Therefore, it is possible to supply sufficient cold air to the refrigerating chamber 102 side without excessively increasing the rotational speed of the axial fan 32.
축류팬(32)의 규격과 풍량이 종래와 동일할 경우, 본 발명의 실시예에 의하면 축류팬(32)의 회전속도가 100rpm 이상 저감되었으며, 소비전력은 14%, 송풍소음은 2dB(A)가 저감되었다.According to the embodiment of the present invention, the rotation speed of the axial fan 32 is reduced by 100 rpm or more, the power consumption is 14%, and the blowing noise is 2 dB (A). Is reduced.
이상에서 설명한 바와 같이, 본 발명에 따르면 축류팬의 상방에 구성되는 유로 스크롤에 의해 증발기실에서 토출되는 냉기의 와류현상이 감소됨으로써, 결과적으로 냉기분배덕트로 유입되는 냉기의 유동저항이 줄어들기 때문에 냉장고의 소비전력이 줄어드는 등, 냉장고의 상품성이 향상된다는 이점이 있다.As described above, according to the present invention, the vortex phenomenon of the cold air discharged from the evaporator chamber is reduced by the flow path scroll formed above the axial flow fan, so that the flow resistance of the cold air flowing into the cold air distribution duct is reduced. There is an advantage that the marketability of the refrigerator is improved, such as the power consumption of the refrigerator is reduced.
도 1은 일반적인 냉장고의 구조를 나타낸 단면도이다.1 is a cross-sectional view showing the structure of a typical refrigerator.
도 2는 일반적인 냉장고의 냉기순환유로를 나타낸 개략도이다. 2 is a schematic view showing a cold air circulation channel of a general refrigerator.
도 3은 종래기술에 따른 냉동실 유로구조를 나타낸 단면도이다.3 is a cross-sectional view showing a freezer compartment flow path structure according to the prior art.
도 4는 본 발명의 실시예에 따른 냉장고의 요부구조를 나타낸 단면도이다.4 is a cross-sectional view showing the main structure of a refrigerator according to an embodiment of the present invention.
도 5의 a, b는 본 발명의 실시예에 따른 냉장고에서의 냉기순환량을 나타낸 그래프이다.5 a and b are graphs showing the cold air circulation in the refrigerator according to the embodiment of the present invention.
<도면의 주요 부분에 대한 부호의 설명><Explanation of symbols for the main parts of the drawings>
10: 케이스 101: 냉동실 10: case 101: freezer
102: 냉장실 18: 증발기102: refrigerator compartment 18: evaporator
181: 증발기실 20: 냉동실 덕트 181: evaporator chamber 20: freezer compartment duct
22: 냉기분배 덕트 24: 냉장실 덕트 22: cold air distribution duct 24: cold room duct
30: 송풍팬 어셈블리 32: 축류팬30: blower fan assembly 32: axial flow fan
34: 구동모터 36: 슈라우드 34: drive motor 36: shroud
40: 유로 스크롤 40: Euro scroll
Claims (3)
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| KR10-2001-0070628A KR100473945B1 (en) | 2001-11-14 | 2001-11-14 | Refrigerator with efficient air circulation system |
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| Application Number | Priority Date | Filing Date | Title |
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| KR10-2001-0070628A KR100473945B1 (en) | 2001-11-14 | 2001-11-14 | Refrigerator with efficient air circulation system |
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| KR100473945B1 true KR100473945B1 (en) | 2005-03-08 |
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| KR102017697B1 (en) * | 2013-02-06 | 2019-09-03 | 엘지전자 주식회사 | Shroud for Refrigerator |
| EP2765373B1 (en) | 2013-02-06 | 2019-08-14 | LG Electronics Inc. | Shroud for refrigerator |
| KR102017698B1 (en) * | 2013-02-06 | 2019-09-03 | 엘지전자 주식회사 | Shroud for Refrigerator |
| CN107421216B (en) * | 2017-05-02 | 2020-10-02 | 海信（山东）冰箱有限公司 | Air duct assembly for multi-temperature-zone refrigerating chamber and refrigerator |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0468280A (en) * | 1990-07-06 | 1992-03-04 | Matsushita Refrig Co Ltd | Refrigerator |
| JPH07127961A (en) * | 1993-11-02 | 1995-05-19 | Hitachi Ltd | Freezer/refrigerator |
| JP2001066039A (en) * | 1999-08-25 | 2001-03-16 | Mitsubishi Electric Corp | Blower for refrigerator and refrigerator having blower for refrigerator |
| KR200231101Y1 (en) * | 1997-12-29 | 2001-10-25 | 윤종용 | Refrigerator |
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2001
- 2001-11-14 KR KR10-2001-0070628A patent/KR100473945B1/en not_active IP Right Cessation
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0468280A (en) * | 1990-07-06 | 1992-03-04 | Matsushita Refrig Co Ltd | Refrigerator |
| JPH07127961A (en) * | 1993-11-02 | 1995-05-19 | Hitachi Ltd | Freezer/refrigerator |
| KR200231101Y1 (en) * | 1997-12-29 | 2001-10-25 | 윤종용 | Refrigerator |
| JP2001066039A (en) * | 1999-08-25 | 2001-03-16 | Mitsubishi Electric Corp | Blower for refrigerator and refrigerator having blower for refrigerator |
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