KR100301498B1 - Circuit and method for reducing noise according as operation state of a cold storage room damper - Google Patents
Circuit and method for reducing noise according as operation state of a cold storage room damper Download PDFInfo
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- KR100301498B1 KR100301498B1 KR1019980050496A KR19980050496A KR100301498B1 KR 100301498 B1 KR100301498 B1 KR 100301498B1 KR 1019980050496 A KR1019980050496 A KR 1019980050496A KR 19980050496 A KR19980050496 A KR 19980050496A KR 100301498 B1 KR100301498 B1 KR 100301498B1
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- damper
- fan motor
- cold air
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- 238000000034 method Methods 0.000 title claims abstract description 10
- 239000012528 membrane Substances 0.000 claims abstract description 43
- 230000000903 blocking effect Effects 0.000 claims abstract description 35
- 238000001514 detection method Methods 0.000 claims abstract description 11
- 230000004888 barrier function Effects 0.000 claims description 14
- 239000003507 refrigerant Substances 0.000 description 9
- 238000010586 diagram Methods 0.000 description 7
- 238000001816 cooling Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000005057 refrigeration Methods 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 238000007710 freezing Methods 0.000 description 1
- 230000008014 freezing Effects 0.000 description 1
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
- F25D11/00—Self-contained movable devices, e.g. domestic refrigerators
- F25D11/02—Self-contained movable devices, e.g. domestic refrigerators with cooling compartments at different temperatures
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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
- F25D17/042—Air treating means within refrigerated spaces
- F25D17/045—Air flow control arrangements
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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
- F25D29/00—Arrangement or mounting of control or safety devices
-
- 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
- F25B2600/00—Control issues
- F25B2600/11—Fan speed control
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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
- F25D2600/00—Control issues
- F25D2600/06—Controlling according to a predetermined profile
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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
- F25D2700/00—Means for sensing or measuring; Sensors therefor
-
- 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
- F25D2700/00—Means for sensing or measuring; Sensors therefor
- F25D2700/12—Sensors measuring the inside temperature
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Cold Air Circulating Systems And Constructional Details In Refrigerators (AREA)
Abstract
본 발명은 냉장실 댐퍼의 동작상태에 따른 소음 저감회로 및 방법에 관한 것으로, 종래에는 냉장실의 온도조절을 위해 냉장실 댐퍼의 복수개 냉기차단막을 모두 전개하거나 전폐, 또는 한쪽만 열게 되면 고내의 유로저항이 달라져 냉동실 팬모터의 RPM이 변화되고, 이 변화된 RPM이 공진영역에 포함되어 소음이 상승(2dBA)되는 현상이 발생되는 문제점이 있다. 따라서 본 발명은 댐퍼 냉기차단막의 개폐상태를 체크하는 개폐상태 감지단계와, 상기에서 복수개의 냉기차단막의 개폐상태에 따라 냉동실 팬모터의 현재 속도를 유지하거나 1차적 또는 2차적으로 줄여 보상하고 그 보상된 회전 속도로 냉동실 팬모터를 운전토록 하는 보상 운전단계로 동작하도록 하여,소음 발생을 줄이도록 한 것이다.The present invention relates to a noise reduction circuit and a method according to an operation state of a refrigerator compartment damper, and in the related art, when all of the plurality of cold blocking membranes of the refrigerator compartment damper are deployed or fully closed, or only one side is opened for temperature control of the refrigerator compartment, the flow path resistance in the refrigerator is changed. The RPM of the freezer compartment fan motor is changed, and the changed RPM is included in the resonance region, thereby causing a phenomenon in which the noise rises (2dBA). Accordingly, the present invention provides an open / closed state detection step of checking the open / closed state of the damper cold blocking membrane, and according to the open / closed state of the plurality of cold blocking membranes, the current speed of the freezer compartment fan motor is maintained or compensated by reducing the primary or secondary. By operating in a compensating operation step to operate the freezer fan motor at a rotational speed that has been rotated, it is to reduce the generation of noise.
Description
본 발명은 고내 유로저항 변화에 상관없이 냉동실 팬모터의 회전속도(RPM)를 일정하게 유지하도록 제어하기 위한 냉장실 댐퍼의 동작상태에 따른 소음 저감회로 및 방법에 관한 것으로, 특히 복수개의 냉기차단막을 갖는 냉장실 댐퍼의 개폐 상태에 따라 변하는 냉동실 팬모터의 RPM을 항상 일정하게 유지하도록 하여 이상소음 발생을 줄이도록 한 냉장실 댐퍼의 동작상태에 따른 소음 저감회로 및 방법에 관한 것이다.The present invention relates to a noise reduction circuit and a method according to the operation state of the refrigerator compartment damper for controlling to maintain a constant rotational speed (RPM) of the freezer compartment fan motor regardless of the change in the flow path resistance of the freezer, in particular having a plurality of cold air blocking membrane It relates to a noise reduction circuit and a method according to the operation state of the refrigerator compartment damper to reduce the occurrence of abnormal noise by always maintaining the RPM of the freezer fan motor that changes according to the opening and closing state of the refrigerator compartment damper.
도 1은 일반적인 냉장고의 모습을 보인 개략도로서, 이에 도시된 바와같이 미도시된 압축기로 부터 저온저압의 냉매를 기체상태로 변화시키면서 냉동실(11)을 냉각시키는 증발기(13)와, 상기 냉동실(11)의 냉기흐름을 조절하는 냉동팬을 구동시키는 냉동실 팬모터(60)와, 상기 냉동실(11)의 냉기를 냉장실(12)로 공급 또는 차단하여 냉장실 온도를 조절하는 복수개의 냉기차단막을 갖는 댐퍼(20)로 구성된다.1 is a schematic view showing a general refrigerator, an evaporator 13 for cooling a freezer compartment 11 while changing a low-temperature low-pressure refrigerant into a gas state from a compressor not shown, and the freezer compartment 11 as shown in FIG. Damper having a freezer compartment fan motor (60) for driving a refrigeration fan for controlling the flow of cold air and a plurality of cold cutoff membranes for controlling the refrigerator compartment temperature by supplying or blocking the cold air of the freezer compartment (11) (12) 20).
이와같이 구성된 냉장고의 냉동실 및 냉장실의 온도조절에 대하여 살펴보면 다음과 같다.Looking at the temperature control of the freezer compartment and the refrigerating compartment of the refrigerator configured as described above are as follows.
미도시된 압축기로 부터 저온저압의 냉매가 공급되면, 그 냉매를 증발기(13)에서 받아들인다.When a low temperature low pressure refrigerant is supplied from a compressor (not shown), the refrigerant is received in the evaporator 13.
그러면 상기 증발기(13)는 저온저압의 냉매를 고온고압의 냉매로 변환시키기 위하여 냉동실(11) 고내의 열을 흡수하여 고외로 방출시키고, 이에따라 냉동실(11)이냉각된다.Then, the evaporator 13 absorbs the heat in the freezer compartment 11 and releases it to the outside to convert the low temperature and low pressure refrigerant into the high temperature and high pressure refrigerant, thereby cooling the freezer compartment 11.
이때 냉동실(11)의 냉기순환을 위하여 냉동실 팬모터(60)가 압축기와 연동하여 구동되고, 상기 냉동실 팬모터(60)가 구동됨에 따라 상기 냉동실 팬이 회전하여 냉기를 순환시킨다.At this time, the freezer compartment fan motor 60 is driven in conjunction with the compressor for the cold air circulation of the freezer compartment 11, and the freezer compartment fan rotates to circulate the cold air as the freezer compartment fan motor 60 is driven.
그리고 냉장실(12)의 온도가 높을 경우 냉장실 온도를 낮추고자 할 경우 냉장실 댐퍼(20)의 냉기차단막을 개폐한다.When the temperature of the refrigerating compartment 12 is high, when the temperature of the refrigerating compartment is to be lowered, the cold air barrier of the refrigerating compartment damper 20 is opened and closed.
그런데 냉장실(12)의 온도가 아주 높으면, 빨리 냉장실 온도를 낮추어 주기 위하여 냉장실 댐퍼(20)의 복수개 냉기차단막을 모두 열어 냉기를 많이 공급하도록 하고, 상기 냉장실(12)의 온도가 낮으면 많은 냉기를 필요로 하지 않으므로 하나의 냉기차단막만 열어 적은 냉기를 냉장실(12)로 공급하도록 한다.However, when the temperature of the refrigerating chamber 12 is very high, in order to quickly lower the refrigerating chamber temperature, all of the plurality of cold air blocking membranes of the refrigerating chamber damper 20 are opened to supply a lot of cold air, and when the temperature of the refrigerating chamber 12 is low, a lot of cold air is stored. Since it is not necessary, only one cold air barrier is opened to supply a small amount of cold air to the refrigerating chamber 12.
이와같은 방법으로 냉동실(11)의 냉기가 냉장실(12)쪽으로 공급되도록 하여 냉장실 온도를 조절하여 준다.In this way, the cold air of the freezing chamber 11 is supplied to the refrigerating chamber 12 to adjust the temperature of the refrigerating chamber.
마찬가지로 상기 냉동실 팬모터(60)가 구동하면, 냉동실 팬이 회전하게 되어 냉동실(11)과 냉장실(12)의 냉기흐름을 조절하여 준다.Similarly, when the freezer compartment fan motor 60 is driven, the freezer compartment fan is rotated to adjust the cold air flow between the freezer compartment 11 and the refrigerating compartment 12.
이렇게 냉장실 온도를 조절하다가 원하는 온도에 도달하면 냉장실 댐퍼(20)의 복수개 냉기차단막을 모두 닫아 냉동실(11)의 냉기가 냉장실(12)로 공급되지 않도록 한다.When the temperature of the refrigerating chamber is adjusted in this manner, when the desired temperature is reached, all of the plurality of cold air blocking membranes of the refrigerating chamber damper 20 are closed to prevent the refrigeration chamber 11 from being supplied to the refrigerating chamber 12.
이상에서 설명한 바와같이, 증발기(13)에 의해 냉동실(11)의 냉기를 조절하여 냉동실 온도를 조절하고, 상기 냉동실(11)의 냉기를 냉장실 댐퍼(20)의 복수개 설치되어 있는 냉기차단막을 복수개 모두 개폐하거나 하나만 개폐하여 냉장실(12)로 공급하도록 하여 냉장실(12)의 온도를 조절한다.As described above, by controlling the cold air of the freezer compartment 11 by the evaporator 13 to control the freezer compartment temperature, the plurality of cold air barrier membranes in which a plurality of cold air of the freezer compartment 11 is provided in the refrigerator compartment damper 20 are all provided. The temperature of the refrigerating compartment 12 is controlled by opening or closing only one and supplying the refrigerating compartment 12.
그리고 냉동실 팬모터(60)는 냉동실 팬을 회전시켜 냉동실(11)과 냉장실(12)의 냉기흐름을 조절하여 준다.And the freezer compartment fan motor 60 controls the cold air flow of the freezer compartment 11 and the refrigerating compartment 12 by rotating the freezer compartment fan.
그러나, 상기에서와 같은 종래기술에서 냉장실의 온도조절을 위해 냉장실 댐퍼의 복수개 냉기차단막을 모두 전개하거나 전폐, 또는 한쪽만 열게 되면 고내의 유로저항이 달라져 냉동실 팬모터의 RPM이 도 2a에서와 같이 변화되고, 이 변화된 RPM이 공진영역에 포함되어 도 2b에서와 같이 소음이 상승(2dBA)되는 현상이 발생되는 문제점이 있다.However, in the prior art as described above, when all of the plurality of cold air barriers of the refrigerator compartment damper are deployed or fully closed, or only one side is opened to control the temperature of the refrigerator compartment, the flow resistance in the refrigerator is changed so that the RPM of the freezer compartment fan motor is changed as shown in FIG. 2A. In addition, the changed RPM is included in the resonance region, so that a phenomenon in which the noise rises as shown in FIG. 2B (2dBA) occurs.
따라서 상기에서와 같은 종래의 문제점을 해결하기 위한 본 발명의 목적은 냉동실 팬모터의 RPM 가변에 따라 발생하는 소음을 줄이기 위한 냉장실 댐퍼의 동작상태에 따른 소음 저감회로 및 방법을 제공함에 있다.Therefore, an object of the present invention for solving the conventional problems as described above is to provide a noise reduction circuit and method according to the operating state of the refrigerator compartment damper for reducing the noise generated by the RPM variable of the freezer compartment fan motor.
본 발명의 다른 목적은 냉장실 댐퍼의 복수개 냉기차단막의 개폐여부에 따라 가변되는 냉동실 팬모터의 운전 RPM을 일정하게 유지시키도록 제어함으로써, 소음을 줄이도록 한 냉장실 댐퍼의 동작상태에 따른 소음 저감회로 및 방법을 제공함에 있다.Another object of the present invention is to reduce the noise by controlling the operation RPM of the freezer fan motor that is variable depending on whether or not the plurality of cold air blocking membrane of the refrigerator compartment damper, noise reduction circuit according to the operation state of the refrigerator compartment damper to reduce the noise and In providing a method.
도 1은 일반적인 냉장고의 개략 구성도.1 is a schematic configuration diagram of a general refrigerator.
도 2a는 종래 댐퍼 상태에 따른 냉동실 팬모터의 RPM 특성도.Figure 2a is a RPM characteristic diagram of a freezer compartment fan motor according to a conventional damper state.
도 2b는 종래 댐퍼 상태에 따른 냉장고 소음 특성도.Figure 2b is a noise characteristics of the refrigerator according to the conventional damper state.
도 3은 본 발명 냉장실 댐퍼의 동작상태에 따른 소음 저감회로에 대한 블록 구성도.Figure 3 is a block diagram of a noise reduction circuit according to the operating state of the refrigerator compartment damper of the present invention.
도 4는 본 발명 냉장실 댐퍼의 동작상태에 따른 소음 저감방법에 대한 동작 흐름도.Figure 4 is an operation flow diagram for the noise reduction method according to the operating state of the refrigerator compartment damper of the present invention.
도 5a는 도 3에서, 댐퍼 상태에 따른 냉동실 팬모터의 RPM 특성도.Figure 5a is a characteristic diagram of the RPM of the freezer fan motor according to the damper state in Figure 3;
도 5b는 도 3에서, 댐퍼 상태에 따른 냉장고 소음 특성도.FIG. 5B is a diagram illustrating a refrigerator noise characteristic according to a damper state in FIG. 3. FIG.
*** 도면의 주요부분에 대한 부호의 설명 ****** Explanation of symbols for main parts of drawing ***
10 : 댐퍼 운전부 11 : 냉동실10 damper driving unit 11: freezer
12 : 냉장실 20 : 댐퍼12: refrigerator compartment 20: damper
30 : 댐퍼 운전상태 검출부 40 : 팬모터 속도 명령부30: damper operation state detection unit 40: fan motor speed command unit
50 : 팬모터 운전 제어부 60 : 팬모터50: fan motor operation control unit 60: fan motor
상기 목적을 달성하기 위한 본 발명은 냉장실의 온도를 조절하기 위하여 댐퍼의 복수개로 이루어진 냉기차단막의 개폐여부를 제어하는 댐퍼 운전부와, 상기 댐퍼 운전부의 제어에 따라 복수개의 냉기차단막을 전개, 전폐, 또는 한쪽만 열도록 하는댐퍼와, 상기 냉기차단막의 개폐상태를 감지하고 그 상태를 출력하는 댐퍼 운전상태 검출부와, 냉동실 팬모터를 구동시키기 위한 속도지령을 내리는 팬모터 속도 명령부와, 상기 댐퍼 운전상태 검출부에서 검출한 냉기차단막의 개폐상태가 전개인 경우에는 상기 팬모터 속도 명령부에서 내린 속도지령을 그대로 유지하고, 상기 냉차단막의 개폐상태가 한쪽만 열림 또는 전폐인 경우에 그에 비례하게 상기 속도지령을 보상한후 그 속도지령에 의해 냉동실 팬모터를 구동시키는 팬모터 운전 제어부로 구성된 것을 특징으로 한다.The present invention for achieving the above object is a damper driving unit for controlling the opening and closing of the cold air blocking membrane consisting of a plurality of dampers in order to control the temperature of the refrigerating chamber, and a plurality of cold air blocking membranes under the control of the damper driving unit, fully closed, Or a damper for opening only one side, a damper operation state detection unit for detecting an open / closed state of the cold air blocking membrane, and outputting the state, a fan motor speed command unit for issuing a speed command for driving a freezer fan motor, and the damper operation. When the open / closed state of the cold air blocking membrane detected by the state detection unit is developed, the speed command issued by the fan motor speed command unit is kept as it is, and the speed is proportionally increased when the open / close state of the cold block is only one side open or closed. The fan motor operation control unit is configured to drive the freezer fan motor by the speed command after compensating the command. It is characterized by.
또한 본 발명은 댐퍼 냉기차단막의 개폐상태를 체크하는 개폐상태 감지단계와, 상기에서 복수개의 냉기차단막의 개폐상태에 따라 냉동실 팬모터의 현재 속도를 유지하거나 1차적 또는 2차적으로 줄여 보상하고 그 보상된 회전 속도로 냉동실 팬모터를 운전토록 하는 보상 운전단계로 이루어진 것을 특징으로 한다.In another aspect, the present invention provides an open / closed state detection step of checking the open / closed state of the damper cold air barrier membrane, and according to the open / closed state of the plurality of cold air barrier membranes, maintains or compensates the current speed of the freezer compartment fan motor primarily or secondly. Characterized in that it consists of a compensating operation step to drive the freezer fan motor at a predetermined rotation speed.
이하, 첨부한 도면에 의거하여 상세히 살펴보면 다음과 같다.Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.
도 3은 본 발명 냉장실 댐퍼의 동작상태에 따른 소음 저감회로에 대한 블록 구성도로서, 이에 도시한 바와같이 냉장실의 온도를 조절하기 위하여 댐퍼의 복수개로 이루어진 냉기차단막의 개폐여부를 제어하는 댐퍼 운전부(10)와, 상기 댐퍼 운전부(10)의 제어에 따라 복수개의 냉기차단막을 전개, 전폐, 또는 한쪽만 열도록 하는 댐퍼(20)와, 상기 냉기차단막의 개폐상태를 감지하고 그 상태를 출력하는 댐퍼 운전상태 검출부(30)와, 냉동실 팬모터를 구동시키기 위한 속도지령을 내리는 팬모터 속도 지령부(40)와, 상기 댐퍼 운전상태 검출부(30)에서 검출한 냉기차단막의 개폐상태가 전개인 경우에는 상기 팬모터 속도 명령부(40)에서 내린 속도지령을그대로 유지하고, 상기 냉기차단막의 개폐상태가 한쪽만 열림 또는 전폐인 경우에 그에 비례하게 상기 속도지령을 줄여 보상한 후 그 속도지령에 의해 냉동실 팬모터(60)를 구동시키는 팬모터 운전 제어부(50)로 구성한다.3 is a block diagram of the noise reduction circuit according to the operation state of the refrigerator compartment damper of the present invention, as shown in the damper driving unit for controlling the opening and closing of the cold air blocking membrane consisting of a plurality of dampers to control the temperature of the refrigerator compartment (10) and the damper (20) which expands, closes, or opens only one of the plurality of cold air blocking membranes under the control of the damper driver (10), and detects the open / closed state of the cold air blocking membrane and outputs the state. The damper operation state detection unit 30, the fan motor speed command unit 40 for giving a speed command for driving the freezer compartment fan motor, and the opening / closing state of the cold air blocking membrane detected by the damper operation state detection unit 30 are developed. In this case, the speed command issued by the fan motor speed command unit 40 is maintained as it is, and the speed is proportionally increased when only one side is opened or closed. After reducing the compensation command is composed of a fan motor driving controller 50 to drive a freezer compartment fan motor 60 by the speed command.
그리고, 도4는 본 발명 냉장실 댐퍼의 동작상태에 따른 소음 저감방법에 대한 동작 흐름도로서, 이에 도시한 바와같이 댐퍼 냉기차단막의 개폐상태를 체크하는 개폐상태 감지단계와, 상기에서 복수개의 냉기차단막의 개폐상태에 따라 냉동실 팬모터의 현재 속도를 유지하거나 1차적 또는 2차적으로 줄여 보상하고, 그 보상된 속도로 상기 냉동실 팬모터를 운전토록 하는 보상 운전단계로 이루어진다.4 is an operation flowchart of a noise reduction method according to an operation state of a refrigerator compartment damper according to the present invention. As shown in FIG. 4, an opening / closing state detecting step of checking an opening / closing state of a damper cold blocking membrane, and the plurality of cold air blocking membranes According to the open / closed state, the current speed of the freezer compartment fan motor is maintained or compensated by reducing the primary or secondary, and the compensating operation step of operating the freezer compartment fan motor at the compensated speed.
상기 보상운전단계는, 복수개의 냉기차단막이 모두 전개(좌/우 모두 열림)될 경우 냉동실 팬모터의 현재속도를 유지시키는 제1단계와, 상기 복수개의 냉기차단막이 한쪽만 열릴 경우 냉동팬 모터의 현재속도를 1차적으로 감속하는 제2단계와, 상기 복수개의 냉기차단막이 전폐(좌/우 모두 닫힘)될 경우 냉동실 팬모터의 현재속도를 2차적으로 감속하는 제3단계로 이루어진다.The compensation operation step is a first step of maintaining the current speed of the freezer compartment fan motor when the plurality of cold air blocking membranes are deployed (both left and right open), and when only one of the plurality of cold air blocking membranes is opened, The second step of decelerating the present speed primarily, and the third step of secondly decelerating the current speed of the freezer compartment fan motor when the plurality of cold air blocking membranes are fully closed (both left and right).
이와같이 구성된 본 발명의 동작 및 작용 효과에 대하여 상세히 설명하면 다음과 같다.Referring to the operation and effect of the present invention configured as described in detail as follows.
도 1에서, 미도시된 압축기로 부터 저온저압의 냉매가 공급되면, 그 냉매를 증발기(13)에서 받아들인다.In FIG. 1, when a low temperature low pressure refrigerant is supplied from a compressor not shown, the refrigerant is received in the evaporator 13.
그러면 상기 증발기(13)는 저온저압의 냉매를 고온고압의 냉매로 변환시키기 위하여 냉동실(11) 고내의 열을 흡수하여 고외로 방출시키며, 이에따라 냉동실(11)이 냉각된다.Then, the evaporator 13 absorbs the heat in the freezer compartment 11 and releases it to the outside to convert the low temperature and low pressure refrigerant into the high temperature and high pressure refrigerant, thereby cooling the freezer compartment 11.
이때 냉장실(12)의 온도제어를 위하여 냉장실 센서(S2)를 이용하여 냉장실 온도를 체크한다.At this time, the temperature of the refrigerator compartment 12 is checked using the refrigerator compartment sensor S2 for temperature control of the refrigerator compartment 12.
가령 냉장실 온도가 설정온도 보다 높을 경우, 댐퍼 운전부(10)는 댐퍼(20)에 복수개로 설치된 냉기차단막을 전개하거나 한쪽만 연다.For example, when the temperature of the refrigerating chamber is higher than the set temperature, the damper driver 10 expands or opens only one cold air blocking membrane installed in the damper 20.
그리고 팬모터 속도 명령부(40)는 냉동실 팬모터(60)를 구동시키기 위한 속도지령을 팬모터 운전 제어부(50)로 출력한다.The fan motor speed command unit 40 outputs a speed command for driving the freezer compartment fan motor 60 to the fan motor operation control unit 50.
그러면 댐퍼 운전상태 검출부(30)는 댐퍼(20)의 냉기차단막의 개폐상태를 체크하여 팬모터 운전 제어부(50)로 알려준다.Then, the damper operation state detection unit 30 checks the open / closed state of the cold air blocking membrane of the damper 20 and informs the fan motor operation control unit 50.
이에따라 상기 팬모터 운전 제어부(50)는 댐퍼(20)의 냉기차단막이 양쪽 모두 열려져 있는 경우 상기 팬모터 속도 명령부(40)에서 전달받은 속도지령을 받아들이고, 그 받아들인 속도지령에 대응하는 펄스폭 변조(PWM)신호로 변환시켜 팬모터(60)로 공급한다.Accordingly, the fan motor operation control unit 50 receives the speed command received from the fan motor speed command unit 40 when both the cold air blocking films of the damper 20 are open, and the pulse width corresponding to the received speed command. It is converted into a modulation (PWM) signal and supplied to the fan motor 60.
결국, 댐퍼(20)의 양쪽 냉기차단막이 모두 열리면, 팬모터(60)가 동작하고 있는 현재의 RPM을 유지할 수 있도록 한다.As a result, when both cold air blocking membranes of the damper 20 are opened, the fan motor 60 can maintain the current RPM in operation.
그리고, 팬모터 운전 제어부(50)는 댐퍼의 양쪽 냉기차단막중 한쪽만 열려있는 경우 양쪽 냉기차단막이 열려있는 경우의 팬모터 RPM 보다 높게되므로 이를 낮추어주기 위하여, 상기 팬모터 속도 명령부(40)에서 제공하는 속도지령을 소정값만큼 줄여 보상한다.In addition, the fan motor operation control unit 50 is higher than the fan motor RPM when both cold air blocking membranes are opened when only one of both cold air blocking membranes of the damper is open, so as to lower the fan motor speed command unit 40. Compensate by reducing the speed command provided by a predetermined value.
이렇게 보상한 속도지령을 그에대한 PWM신호로 변환시켜 팬모터(60)로 공급하여 양쪽 냉기차단막이 열려있는 경우와 같은 RPM을 유지하도록 한다.The speed command thus compensated is converted into a PWM signal for it to be supplied to the fan motor 60 to maintain the same RPM as when both cold air blocking membranes are open.
그리고, 팬모터 운전 제어부(50)는 댐퍼의 양쪽 냉기차단막이 모두 닫혀있는 경우 양쪽 냉기차단막중 한쪽만 열려있는 경우의 팬모터 RPM 보다 높게되므로 이를 낮추어주기 위하여, 상기 팬모터 속도 명령부(40)에서 제공하는 속도지령을 소정값만큼 줄여 보상한다.Further, the fan motor operation control unit 50 is higher than the fan motor RPM when only one of both cold air blocking membranes is open when both cold air blocking membranes of the damper are closed, so as to lower the fan motor speed command unit 40. Compensate by reducing the speed command provided by.
여기서, 댐퍼의 한쪽 냉기차단막이 열려있는 경우의 감속값은 댐퍼의 양쪽 냉기차단막이 닫혀있는 경우의 감속값보다 작다.Here, the deceleration value when one cold air barrier membrane of the damper is open is smaller than the deceleration value when both cold air barrier membranes of the damper are closed.
왜냐하면 한쪽 냉기차단막이 열려있는 경우의 유로저항이 양쪽 냉기차단막이 닫혀있는 경우의 유로저항보다 크기 때문이다.This is because the flow path resistance when one cold air barrier is open is larger than the flow path resistance when both cold air barriers are closed.
이상에서와 같이 댐퍼의 냉기차단막의 개폐상태에 관계없이 냉동실 팬모터(60)의 RPM을 항상 일정하게 유지할 수 있도록 속도를 보상해준다.As described above, the speed is compensated so that the RPM of the freezer compartment fan motor 60 is always maintained regardless of the open / closed state of the cold air barrier membrane of the damper.
따라서 냉동실 팬모터의 RPM이 가변되지 않음에 따라 소음 발생을 줄일 수 있다.Therefore, as the RPM of the freezer fan motor is not variable, noise can be reduced.
따라서, 본 발명은 냉장실 댐퍼의 냉기차단막의 개폐상태에 따라 가변되는 냉동실 팬모터의 운전 RPM을 가변되지 않도록 제어하여 항상 일정한 RPM으로 운전하도록 하여 소음이 상승되는 것을 줄인 효과가 있다.Therefore, the present invention has the effect of reducing the noise is increased by always operating at a constant RPM by controlling the operating RPM of the freezer compartment fan motor that is variable according to the opening and closing state of the cold air blocking membrane of the refrigerator compartment damper.
Claims (3)
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1019980050496A KR100301498B1 (en) | 1998-11-24 | 1998-11-24 | Circuit and method for reducing noise according as operation state of a cold storage room damper |
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| KR1019980050496A KR100301498B1 (en) | 1998-11-24 | 1998-11-24 | Circuit and method for reducing noise according as operation state of a cold storage room damper |
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| KR101700760B1 (en) * | 2010-07-19 | 2017-02-13 | 엘지전자 주식회사 | Apparatus for opening/closing cold air flow path and refrigerator having the same |
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| CN104534780A (en) * | 2014-12-23 | 2015-04-22 | 合肥美的电冰箱有限公司 | Air duct assembly and refrigerator |
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| KR101700760B1 (en) * | 2010-07-19 | 2017-02-13 | 엘지전자 주식회사 | Apparatus for opening/closing cold air flow path and refrigerator having the same |
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