KR20050028391A - A refrigerants leakage sensing system and method - Google Patents
A refrigerants leakage sensing system and method Download PDFInfo
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- KR20050028391A KR20050028391A KR1020030064577A KR20030064577A KR20050028391A KR 20050028391 A KR20050028391 A KR 20050028391A KR 1020030064577 A KR1020030064577 A KR 1020030064577A KR 20030064577 A KR20030064577 A KR 20030064577A KR 20050028391 A KR20050028391 A KR 20050028391A
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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
- F25B49/00—Arrangement or mounting of control or safety devices
- F25B49/02—Arrangement or mounting of control or safety devices for compression type machines, plants or systems
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M3/00—Investigating fluid-tightness of structures
- G01M3/002—Investigating fluid-tightness of structures by using thermal means
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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
- F25B49/00—Arrangement or mounting of control or safety devices
- F25B49/005—Arrangement or mounting of control or safety devices of safety devices
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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
- F25B2500/00—Problems to be solved
- F25B2500/22—Preventing, detecting or repairing leaks of refrigeration fluids
- F25B2500/222—Detecting refrigerant leaks
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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
- F25B2700/00—Sensing or detecting of parameters; Sensors therefor
- F25B2700/21—Temperatures
- F25B2700/2117—Temperatures of an evaporator
- F25B2700/21174—Temperatures of an evaporator of the refrigerant at the inlet of the evaporator
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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
- F25B2700/00—Sensing or detecting of parameters; Sensors therefor
- F25B2700/21—Temperatures
- F25B2700/2117—Temperatures of an evaporator
- F25B2700/21175—Temperatures of an evaporator of the refrigerant at the outlet of the evaporator
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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
- F25D2400/00—General features of, or devices for refrigerators, cold rooms, ice-boxes, or for cooling or freezing apparatus not covered by any other subclass
- F25D2400/04—Refrigerators with a horizontal mullion
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- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Air Conditioning Control Device (AREA)
- Devices That Are Associated With Refrigeration Equipment (AREA)
- Examining Or Testing Airtightness (AREA)
Abstract
Description
본 발명은 냉매누설감지시스템 및 방법에 관한 것으로, 더욱 상세하게는 냉매의 누설유무를 감지하기 위한 냉매누설감지시스템 및 방법에 관한 것이다.The present invention relates to a refrigerant leakage detection system and method, and more particularly to a refrigerant leakage detection system and method for detecting the leakage of refrigerant.
일반적으로 냉동사이클에 적용하는 냉매로서, 탄화수소계 및 혼합 냉매 등 대체 냉매의 적용이 이루어지고 있다. 이와 같은 냉매는 폭발성 및 독성을 가지고 있으므로, 냉매관의 냉매가 누설되면 성능저하 뿐 아니라 인체에도 나쁜 영향을 미치게 된다. 따라서 냉매관의 냉매가 누설되는지 여부를 감지하기 위해 냉매누설감지시스템이 필수적이다.In general, as a refrigerant to be applied to a refrigeration cycle, applications of alternative refrigerants such as hydrocarbon-based and mixed refrigerants have been made. Since such refrigerants are explosive and toxic, leakage of the refrigerant in the refrigerant pipe will adversely affect not only the performance but also the human body. Therefore, the refrigerant leakage detection system is essential to detect whether the refrigerant in the refrigerant pipe leaks.
이하 종래 기술에 따른 냉매누설감지시스템에 대해 살펴보면 다음과 같다.Looking at the refrigerant leakage detection system according to the prior art as follows.
도 1은 종래 기술에 따른 냉매누설을 감지하기 위한 제 1 실시예이다.1 is a first embodiment for detecting a refrigerant leak according to the prior art.
종래에는 도면에 도시된 바와 같이, 반 밀폐계에 가스농도감지센서(20)를 별도로 구비하고 있다. 그리고 상기 가스농도감지센서(20)는 제어부(30)와 연결하고 있다. 상기 가스농도감지센서(20)는 가스의 농도를 감지하는 센서로서, 냉장고 및 공조기가 있는 공간에 냉매관(10)의 냉매가 누설하면, 방안의 유해 가스 농도가 위험수위 이상으로 상승하는 것을 감지하게 된다.Conventionally, as shown in the figure, the gas concentration sensor 20 is provided separately in the semi-hermetic system. The gas concentration sensor 20 is connected to the control unit 30. The gas concentration sensor 20 is a sensor for detecting the concentration of the gas, when the refrigerant leaks in the refrigerant pipe 10 in the space where the refrigerator and the air conditioner, detects that the concentration of harmful gas in the room rises above the dangerous level Done.
그러나 이와 같은 종래의 냉매누설시스템은, 냉매관(10)에 미세한 균열이 발생하여 냉매가 누설되는 경우 즉시 감지하기가 어려웠다.However, such a conventional refrigerant leakage system, it is difficult to immediately detect when the refrigerant leaks because the minute cracks in the refrigerant pipe (10).
그리고 상기와 같은 가스농도감지센서(20)를 포함하는 냉매누설감지시스템은 매우 고가여서, 일반 냉장고와 같은 가전기기에 적용할 경우 단가상승으로 이어져 적용하기가 어려웠다.In addition, the refrigerant leakage detection system including the gas concentration sensor 20 as described above is very expensive, and when applied to home appliances such as a general refrigerator, it is difficult to apply it to a unit price increase.
또한 종래의 제 1 실시예와 같은 경우는, 냉매관의 용량에 따라 가스의 농도감지알고리즘을 변경하여야 하는 번거로움이 있었다.In addition, in the case of the conventional first embodiment, there is a hassle of changing the gas concentration detection algorithm according to the capacity of the refrigerant pipe.
도 2는 종래 기술에 따른 냉매누설을 감지하기 위한 제 2 실시예이다.Figure 2 is a second embodiment for detecting a refrigerant leak according to the prior art.
도 2는 냉매누설의 수동감지방법을 도시한 것으로서, 냉매관(10)에 균열 및 용접 불량 등이 발생하여 냉매가 점차 소진되는 경우, 예상하는 균열부위에 비눗물 및 냉매 반응용액을 뿌려 준다. 그러면, 균열이 발생된 부분에서 비눗물이 거품을 발생시키거나, 냉매반응용액이 균열여부를 표시하게 된다.FIG. 2 illustrates a manual detection method of refrigerant leakage. When the refrigerant is gradually exhausted due to cracks and poor welding in the refrigerant pipe 10, soapy water and a refrigerant reaction solution are sprayed on the anticipated crack. Then, soapy water generates bubbles in the cracked portion, or the refrigerant reaction solution indicates whether cracking occurs.
그러나 이와같은 수동감지방법은, 냉매관의 균열이 아주 미세하거나 냉매가 완전히 소진된 경우에는 감지할 수 없다. 또한 검사자가 수동으로 직접 조작하고 주기적으로 계속 누설감지하여야 함으로서, 검사자가 번거로움을 가지게 되었다.However, such a manual detection method cannot be detected when the crack of the refrigerant pipe is very fine or the refrigerant is completely exhausted. In addition, the inspector has to manually operate and periodically detect leaks, which makes the inspector cumbersome.
따라서 본 발명은, 저가의 비용으로 자동으로 냉매의 누설유무를 감지할 수 있는 냉매누설감지시스템 및 방법을 제공함에 있다.Accordingly, the present invention provides a refrigerant leakage detection system and method capable of automatically detecting the leakage of refrigerant at a low cost.
상기 목적을 달성하기 위한 본 발명에 따른 냉매누설감지시스템은, 압축기, 응축기, 증발기를 구비하는 냉동사이클에 있어서, 상기 증발기에 유입되는 냉매의 온도를 측정하는 제 1 온도센서와; 상기 증발기에 토출되는 냉매의 온도를 측정하는 제 2 온도센서와; 상기 제 1 온도센서와 제 2 온도센서의 온도차를 검출하여, 냉매누설여부를 판단하는 제어수단과; 상기 제어수단의 제어하에 냉매누설이 발생되면, 냉매누설을 표시하는 표시수단을 포함하여 구성된다.Refrigerant leakage detection system according to the present invention for achieving the above object, in the refrigeration cycle having a compressor, a condenser, an evaporator, the first temperature sensor for measuring the temperature of the refrigerant flowing into the evaporator; A second temperature sensor for measuring a temperature of a refrigerant discharged to the evaporator; Control means for detecting a temperature difference between the first temperature sensor and the second temperature sensor and determining whether the refrigerant is leaked; And a display means for displaying the refrigerant leakage when the refrigerant leakage occurs under the control of the control means.
그리고 상기 목적을 달성하기 위한 본 발명에 따른 냉매누설감지방법은, 증발기의 유입구측의 냉매 온도를 센싱하는 제 1 센싱과정과; 증발기의 토출구측의 냉매 온도를 센싱하는 제 2 센싱과정과; 상기 제 1 센싱과정의 온도값과 제 2 센싱과정의 온도값의 온도차를 산출하는 산출단계와; 상기 산출단계에 의해서 온도차가 특정온도 이상발생하면, 냉매누설을 표시하는 냉매누설표시단계를 포함하여 구성된다.In addition, the refrigerant leakage detection method according to the present invention for achieving the above object, the first sensing process for sensing the refrigerant temperature on the inlet side of the evaporator; A second sensing process of sensing a temperature of a refrigerant at a discharge port side of the evaporator; Calculating a temperature difference between the temperature value of the first sensing process and the temperature value of the second sensing process; If the temperature difference occurs by a predetermined temperature or more by the calculating step, it comprises a refrigerant leakage display step of displaying the refrigerant leakage.
또한 상기 목적을 달성하기 위한 본 발명에 따른 냉매누설감지방법은, 상기 냉매누설표시단계에서, 냉매누설에 따른 경보음을 출력하는 것을 특징으로 한다.In addition, the refrigerant leakage detection method according to the present invention for achieving the above object, in the refrigerant leakage display step, characterized in that for outputting the alarm sound according to the refrigerant leakage.
이하 본 발명에 따른 냉매누설감지시스템 및 방법에 대해 살펴보면 다음과 같다.Looking at the refrigerant leakage detection system and method according to the present invention.
도 3은 본 발명에 따른 냉매누설을 감지하기 위한 제어구성도이다.3 is a control block diagram for detecting a refrigerant leak according to the present invention.
본 발명의 제어구성은 냉장고 본체에 전원을 인가하는 전원공급부와, 증발기의 유입구측의 냉매온도를 측정하는 제 1 온도센서(120)와, 증발기 토출구측의 냉매온도를 측정하는 제 2 온도센서(130)와, 냉장고의 운전을 제어하고, 제 1 온도센서(120)와 제 2 온도센서(130)의 온도차를 산출하고 기준값과 비교하여 냉매누설여부를 감지하는 마이크로컨트롤러(200)와, 냉매누설을 표시하는 표시부(210)를 포함하여 구성된다.The control configuration of the present invention includes a power supply unit for supplying power to the refrigerator body, a first temperature sensor 120 for measuring the refrigerant temperature on the inlet side of the evaporator, and a second temperature sensor for measuring the refrigerant temperature on the outlet side of the evaporator ( 130 and the microcontroller 200 that controls the operation of the refrigerator, calculates a temperature difference between the first temperature sensor 120 and the second temperature sensor 130 and compares the reference value with a reference value to detect whether the refrigerant is leaked. It is configured to include a display unit 210 for displaying.
이하 상기 제어구성의 동작과정에 대해 도 4 및 도 5를 참조하여 살펴보면 다음과 같다.Hereinafter, an operation process of the control configuration will be described with reference to FIGS. 4 and 5.
도 4는 본 발명에 따른 냉매누설을 감지하기 위한 동작제어흐름도이고, 도 5는 본 발명에 따른 냉매누설을 감지하기 위한 실시예이다.4 is an operation control flow chart for detecting the refrigerant leakage according to the present invention, Figure 5 is an embodiment for detecting the refrigerant leakage according to the present invention.
도 5에 도시되고 있는 바와 같이 냉장고의 증발기가 냉동실에 구성되어 있다. 냉동실로 공급된 냉기는 냉동실을 순환한 후, 귀환덕트(150)를 통해 흡입된다. 그리고 상기 냉동실에는 팬모터(110)가 구성되어, 냉동실로 열교환된 냉기가 빠르게 송풍될 수 있도록 팬의 구동을 제어한다.As shown in FIG. 5, the evaporator of the refrigerator is configured in the freezer compartment. The cold air supplied to the freezing chamber is circulated through the freezing chamber and is sucked through the return duct 150. And the fan motor 110 is configured in the freezer compartment, and controls the driving of the fan so that the cold air heat exchanged into the freezer compartment can be quickly blown.
한편, 냉동실의 증발기를 통해서 열교환기된 냉기는 냉장실로 공급된다. 즉, 상기 냉동실로부터 냉장실로 형성된 냉기유로덕트(140)를 통해서 냉동실의 증발기로부터 생성된 냉기를 냉장실로 공급한다. 상기 냉장실로 공급된 냉기는 냉장실을 순환한 후, 귀환덕트(150)를 통해 흡입된다.On the other hand, the cold air exchanged through the evaporator of the freezer compartment is supplied to the refrigerating compartment. That is, the cold air generated from the evaporator of the freezer compartment is supplied to the cold compartment through the cold air duct 140 formed from the freezer compartment. The cold air supplied to the refrigerating compartment is circulated through the refrigerating compartment, and is sucked through the return duct 150.
상기 냉동실의 후면에 부착된 증발기(100)의 냉매관 유입구측에 제 1 온도센서(120)가 장착된다. 그리고 증발기(100)의 냉매관 토출구측에 제 2 온도센서(130)가 장착된다. 상기와 같이 각각 장착된 제 1 온도센서(120)와 제 2 온도센서(130)는 냉매관의 온도를 감지한다(제 210 단계, 제 220 단계). 상기 제 1 온도센서(120)와 제 2 온도센서(130)를 통해서 감지된 온도값은 마이크로컨트롤러(200)에 전달된다. 이에 따라 마이크로컨트롤러(200)는 전달된 온도값의 온도차를 산출한다(제 230 단계). The first temperature sensor 120 is mounted at the inlet side of the refrigerant pipe of the evaporator 100 attached to the rear surface of the freezer compartment. And the second temperature sensor 130 is mounted on the outlet side of the refrigerant pipe of the evaporator (100). The first temperature sensor 120 and the second temperature sensor 130 mounted as described above detect the temperature of the refrigerant pipe (step 210 and step 220). The temperature value detected by the first temperature sensor 120 and the second temperature sensor 130 is transmitted to the microcontroller 200. Accordingly, the microcontroller 200 calculates a temperature difference between the transferred temperature values (step 230).
그리고 상기 마이크로컨트롤러(200)는 제 1 온도센서(120)와 제 2 온도센서(130)의 온도차에 따른 냉매관의 냉매누설여부를 판단하기 위한 기준값이 세팅되어져 있다.In addition, the microcontroller 200 has a reference value for determining whether the refrigerant leaked in the refrigerant pipe according to the temperature difference between the first temperature sensor 120 and the second temperature sensor 130.
이에 따라 상기 마이크로컨트롤러(200)는 제 1 온도센서(120)와 제 2 온도센서(130)의 온도차가 기준온도 이하인 경우에서는, 증발기(100)의 냉매관이 정상상태라고 판단하게 된다.Accordingly, when the temperature difference between the first temperature sensor 120 and the second temperature sensor 130 is less than the reference temperature, the microcontroller 200 determines that the refrigerant pipe of the evaporator 100 is in a normal state.
그러나 상기 마이크로컨트롤러(200)는, 제 1 온도센서(120)와 제 2 온도센서(130)의 온도차가 기준온도 이상인 경우에서는(240 단계), 증발기(100)의 냉매관으로부터 냉매누설이 발생되고 있다고 판단한다. However, when the temperature difference between the first temperature sensor 120 and the second temperature sensor 130 is greater than or equal to the reference temperature (step 240), the microcontroller 200 generates a refrigerant leakage from the refrigerant pipe of the evaporator 100. I judge it.
이에 따라 표시부를 통해서 냉매누설여부를 표시함으로서(제 250 단계), 사용자가 즉각적으로 대응(제품교체 등) 할 수 있도록 하고 있다. Accordingly, by displaying the leakage of refrigerant through the display unit (step 250), the user can immediately respond (product replacement, etc.).
도 6a는 정상적인 냉매유출입을 나타내는 상태도이고, 도 6b는 정상적인 냉매유출입에 따른 증발기의 유출입구의 온도차를 나타내는 상태도이다.Figure 6a is a state diagram showing a normal refrigerant flow in and out, Figure 6b is a state diagram showing the temperature difference of the outlet inlet of the evaporator according to the normal refrigerant flow in and out.
도 6a는 냉매누설이 없는 상태에서 냉매의 유출입이 정상적으로 진행되는 경우, 냉매의 증발상태를 나타내는 도면이다. 한편, 증발기(100)의 유입구측에 구비된 제 1 온도센서(120)와 증발기(100)의 토출구측에 구비된 제 2 온도센서(130)를 통해서 각각 온도값을 검출한다. 냉매의 누설이 없는 상태에서, 증발기(100)의 유출입구측의 온도가 도 6b에 도시된 바와 같이 나타나고 있다. 즉, 증발기(100)로 유입되는 냉매의 온도와 증발기(100)로부터 토출되는 냉매의 온도의 차가 거의 나타나지 않고 일정하게 유지된다.6A is a diagram illustrating an evaporation state of a refrigerant when the flow of the refrigerant proceeds normally in the absence of refrigerant leakage. On the other hand, the temperature value is detected through the first temperature sensor 120 provided on the inlet side of the evaporator 100 and the second temperature sensor 130 provided on the outlet side of the evaporator 100, respectively. In the state where there is no leakage of the refrigerant, the temperature at the outlet inlet side of the evaporator 100 is shown as shown in Fig. 6B. That is, the difference between the temperature of the refrigerant flowing into the evaporator 100 and the temperature of the refrigerant discharged from the evaporator 100 does not appear and remains constant.
도 7a는 냉매누설시, 냉매유출입상태도이고, 도 5b는 냉매누설시, 냉매유출입에 따른 증발기의 유출입구의 온도차를 나타내는 상태도이다.7A is a state diagram illustrating a refrigerant flow in and out of refrigerant, and FIG. 5B is a state diagram illustrating a temperature difference between the outlets of the evaporator according to the flow of refrigerant in the case of refrigerant leakage.
도 7a 에 도시되고 있는 바와 같이 냉매누설이 발생되면, 증발기(100)의 냉매량이 감소되므로 상대적으로 정상상태에서보다 증발기(100)의 냉매 증발시점이 빨라진다. 따라서 도면에 도시된 바와 같이 A시점에 도달하기 전인 B시점에서 냉매가 모두 증발된다. 이로 인해서 증발기(100)의 토출구측의 냉매온도가 매우 높아지고, 결국 증발기(100)의 유입구측과 토출구측의 온도차가 크게 발생하게 된다.As shown in FIG. 7A, when the refrigerant leak occurs, the amount of refrigerant in the evaporator 100 decreases, so that the refrigerant evaporation time of the evaporator 100 becomes faster than in the normal state. Therefore, as shown in the figure, all of the refrigerant evaporates at the time B before reaching the time A. As a result, the refrigerant temperature at the discharge port side of the evaporator 100 becomes very high, and as a result, a large temperature difference occurs between the inlet side and the discharge port side of the evaporator 100.
즉, 도 7b에 도시된 바와 같이 본 발명은 누설상태에서, 증발기(100)의 유입구측에 구비된 제 1 온도센서(120)를 통해서 감지된 온도와 증발기(100)의 토출구측에 구비된 제 2 온도센서(130)를 통해서 감지된 온도의 온도차가 특정온도(본 발명의 실시예에서는 약 5℃ 이상)이상 차이가 발생한다.That is, as shown in FIG. 7B, the present invention provides a temperature detected by the first temperature sensor 120 provided at the inlet side of the evaporator 100 and a discharge outlet side of the evaporator 100 in a leaked state. 2 The temperature difference of the temperature sensed by the temperature sensor 130, the difference occurs more than a specific temperature (about 5 ℃ or more in the embodiment of the present invention).
본 발명에서 사용되고 있는 상기 제 1 온도센서(120)와 제 2 온도센서(130)는 일반적으로 제상온도센서의 역할을 동시에 수행한다.The first temperature sensor 120 and the second temperature sensor 130 used in the present invention generally perform the role of the defrost temperature sensor at the same time.
이상 살펴본 바와 같이 본 발명은, 냉장고 고내의 냉매누설을 감지하기 위해서 증발기의 흡입측 및 토출측에 각각 온도센서를 구비하고, 상기 온도센서를 통해서 감지된 온도차에 따라 냉매누설이 진행되고 있는지 여부를 판단하는 것을 기본적인 기술적 사상으로 한다.As described above, the present invention includes a temperature sensor on the suction side and the discharge side of the evaporator to detect the refrigerant leakage in the refrigerator, and determines whether the refrigerant leakage is in progress according to the temperature difference detected by the temperature sensor. It is assumed that the basic technical idea.
본 발명의 권리는 위에서 설명된 실시예에 한정되지 않고 청구범위에 기재된 바에 의해 정의되며, 본 발명의 분야에서 통상의 지식을 가진 자가 청구범위에 기재된 권리범위 내에 다양한 변형과 개작을 할 수 있다는 것은 자명하다.The rights of the present invention are not limited to the embodiments described above, but are defined by the claims, and it is understood that those skilled in the art can make various modifications and adaptations within the scope of the rights described in the claims. Self-explanatory
따라서 본 발명에 따른 냉매누설감지시스템 및 방법으로 인해서 다음과 같은 효과를 기대할 수 있다.Therefore, the following effects can be expected due to the refrigerant leakage detection system and method according to the present invention.
본 발명은 종래와 같이 별도의 고가의 장비를 사용하여 냉매의 누설여부를 감지하거나, 수동검사를 통해서 냉매의 누설여부를 검사하지 않고도, 증발기의 유출입측에 구성된 두 개의 온도센서의 온도차에 따라 냉매의 누설여부를 판단할 수 있다.The present invention uses a separate expensive equipment as in the prior art, without detecting the leakage of the refrigerant, or without checking the leakage of the refrigerant through a manual inspection, the refrigerant according to the temperature difference of the two temperature sensors configured on the inlet and out of the evaporator It is possible to determine whether or not.
즉 본 발명은, 냉매누설시 증발기의 증발시점이 빨라지고, 이로 인해서 증발기의 토출구측 온도가 높아진다. 이에 따라 증발기의 유입구측과 증발기의 토출구측의 온도차가 크게 발생되므로, 냉매의 누설여부를 판단하는 것이 가능해진다. 따라서 본 발명은 저가의 비용으로 냉매누설감지를 자동으로 수행하는 것이 가능해진다.That is, in the present invention, the evaporation time of the evaporator is faster when the refrigerant is leaked, thereby increasing the temperature at the outlet side of the evaporator. As a result, a large temperature difference is generated between the inlet side of the evaporator and the outlet side of the evaporator, whereby it is possible to determine whether the refrigerant leaks. Therefore, the present invention can automatically perform the refrigerant leakage detection at low cost.
도 1은 종래 기술에 따른 냉매누설을 감지하기 위한 제 1 실시예.1 is a first embodiment for detecting a refrigerant leak according to the prior art.
도 2는 종래 기술에 따른 냉매누설을 감지하기 위한 제 2 실시예.Figure 2 is a second embodiment for detecting a refrigerant leak according to the prior art.
도 3은 본 발명에 따른 냉매누설을 감지하기 위한 제어구성도.3 is a control block diagram for detecting a refrigerant leak in accordance with the present invention.
도 4는 본 발명에 따른 냉매누설을 감지하기 위한 동작제어흐름도.4 is an operation control flow chart for detecting a refrigerant leak in accordance with the present invention.
도 5는 본 발명에 따른 냉매누설을 감지하기 위한 실시예.5 is an embodiment for detecting a refrigerant leak in accordance with the present invention.
도 6a는 정상적인 냉매유출입을 나타내는 상태도.Figure 6a is a state diagram showing a normal refrigerant flow in and out.
도 6b는 정상적인 냉매유출입에 따른 증발기의 유출입구의 온도차를 나타내는 상태도.Figure 6b is a state diagram showing the temperature difference of the outlet inlet of the evaporator according to the normal refrigerant flow in and out.
도 7a는 냉매누설시, 냉매유출입상태도.7A is a coolant leakage state when the refrigerant leaks.
도 7b는 냉매누설시, 냉매유출입에 따른 증발기의 유출입구의 온도차를 나타내는 상태도.Figure 7b is a state diagram showing the temperature difference between the inlet and outlet of the evaporator according to the refrigerant flow in and out, refrigerant.
* 도면의 주요 부분에 대한 부호의 설명 * Explanation of symbols on the main parts of the drawings
100 : 증발기 110 : 팬모터100: evaporator 110: fan motor
120 : 제 1 온도센서 130 : 제 2 온도센서120: first temperature sensor 130: second temperature sensor
Claims (3)
Priority Applications (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020030064577A KR20050028391A (en) | 2003-09-17 | 2003-09-17 | A refrigerants leakage sensing system and method |
| US10/938,647 US20050056031A1 (en) | 2003-09-17 | 2004-09-13 | Refrigerant leakage sensing system and method |
| JP2004270410A JP2005090953A (en) | 2003-09-17 | 2004-09-16 | Refrigerant leakage detection system and refrigerant leakage detection method |
| DE102004044990A DE102004044990A1 (en) | 2003-09-17 | 2004-09-16 | System and method for detecting coolant leaks |
| GB0420628A GB2406174A (en) | 2003-09-17 | 2004-09-16 | Detection of refrigerant leakage by temperature measurement |
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| KR1020030064577A KR20050028391A (en) | 2003-09-17 | 2003-09-17 | A refrigerants leakage sensing system and method |
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| KR20050028391A true KR20050028391A (en) | 2005-03-23 |
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| KR1020030064577A KR20050028391A (en) | 2003-09-17 | 2003-09-17 | A refrigerants leakage sensing system and method |
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| US (1) | US20050056031A1 (en) |
| JP (1) | JP2005090953A (en) |
| KR (1) | KR20050028391A (en) |
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| GB (1) | GB2406174A (en) |
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- 2004-09-16 DE DE102004044990A patent/DE102004044990A1/en not_active Withdrawn
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| KR20150006505A (en) * | 2013-07-08 | 2015-01-19 | 엘지전자 주식회사 | An air conditioner and a control method the same |
Also Published As
| Publication number | Publication date |
|---|---|
| GB2406174A (en) | 2005-03-23 |
| JP2005090953A (en) | 2005-04-07 |
| US20050056031A1 (en) | 2005-03-17 |
| DE102004044990A1 (en) | 2005-04-14 |
| GB0420628D0 (en) | 2004-10-20 |
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