KR100212912B1 - Airconditioner capable of re-inserting refrigerant - Google Patents

Airconditioner capable of re-inserting refrigerant Download PDF

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Publication number
KR100212912B1
KR100212912B1 KR1019960075628A KR19960075628A KR100212912B1 KR 100212912 B1 KR100212912 B1 KR 100212912B1 KR 1019960075628 A KR1019960075628 A KR 1019960075628A KR 19960075628 A KR19960075628 A KR 19960075628A KR 100212912 B1 KR100212912 B1 KR 100212912B1
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South Korea
Prior art keywords
refrigerant
injection cylinder
cylinder
refrigerant injection
air conditioner
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KR1019960075628A
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Korean (ko)
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KR19980056361A (en
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박노훈
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구자홍
엘지전자주식회사
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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
    • F25B45/00—Arrangements for charging or discharging refrigerant
    • 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
    • F25B2345/00—Details for charging or discharging refrigerants; Service stations therefor
    • F25B2345/006—Details for charging or discharging refrigerants; Service stations therefor characterised by charging or discharging valves
    • 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
    • F25B2500/01—Geometry problems, e.g. for reducing size
    • 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
    • F25B2500/32—Weight

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Air-Conditioning For Vehicles (AREA)

Abstract

본 발명은 냉매 재주입이 용이한 공기조화장치에 관한 것으로, 특히 냉동사이클을 구성하는 증발기와 압축기 사이에 액분리기 겸 냉매주입봄베를, 응축기와 팽창변 사이에 수액기 겸 냉매주입봄베를 각각 교체할 수 있는 구조를 갖도록 함으로서, 서비스 시 무거운 냉매봄베를 가지고 다니지 않아도 되는 편리함과, 교체된 냉매주입봄베는 공기조화용 제품의 서비스용으로 재활용 가능하도록 구성된 냉매 재주입이 용이한 공기조화장치로, 공기조화장치를 구성하는 증발기(4)와 압축기(1) 사이에 액분리기 겸 제1냉매주입봄베(10)를, 응축기(2)와 팽창변(3) 사이에 수액기 겸 제2냉매주입봄베(20)를 각각 설치하되, 이들은 각각 체결수단(30)에 의해 착탈이 용이하게 설치된다.The present invention relates to an air conditioner that is easy to re-inject the refrigerant, and in particular, the liquid separator and the refrigerant injection cylinder between the evaporator and the compressor constituting the refrigeration cycle, and the receiver and refrigerant injection cylinder between the condenser and the expansion valve, respectively. By having a structure that can be, the convenience of not having to carry a heavy refrigerant cylinder during service, and the replaced refrigerant injection cylinder is a refrigerant re-injection air conditioning device configured to be recyclable for service of air conditioning products, air A liquid separator and a first refrigerant injection cylinder 10 between the evaporator 4 and the compressor 1 constituting the conditioner, and a receiver and a second refrigerant injection cylinder 20 between the condenser 2 and the expansion valve 3. ) Are installed, respectively, these are easily installed and detached by the fastening means 30, respectively.

Description

냉매 재주입이 용이한 공기조화장치Air Conditioning Device for Easy Re-Injection

일반적으로 공기조화장치에 사용되는 냉매는 프레온 R22(HCFC계) 냉매의 대체 냉매로 R-407C(HFC계)와 같은 대체냉매가 사용되며, 이 R-407C 냉매는 3성 혼합 냉매로서 단일냉매와는 그 성격이 다르고, R-32/R125/R-134a를 각각 23/25/52의 중량비로 혼합한 비공비혼합냉매로서 각각 증발온도가 다르기 때문에 즉, R-32냉매 R-125냉매 R-134a냉매 순으로 증발한다.In general, the refrigerant used in the air conditioner is an alternative to the Freon R22 (HCFC) refrigerant, and an alternative refrigerant such as R-407C (HFC) is used. Is a non-azeotropic mixed refrigerant in which R-32 / R125 / R-134a is mixed at a weight ratio of 23/25/52, respectively, because the evaporation temperature is different, that is, R-32 refrigerant R-125 refrigerant R- Evaporate in 134a refrigerant order.

따라서, 공기조화장치 중 어느 한 부위에서 누설이 발생할 경우 대부분 가스상태로 누설되며, 이때 증발온도가 가장 높은 R-32냉매가 먼저 증발하기 때문에 누설량이 가장 많아지게 된다.Therefore, when leakage occurs at any one part of the air conditioner, most of the leakage occurs in a gaseous state, and since the R-32 refrigerant having the highest evaporation temperature evaporates first, the amount of leakage is greatest.

그래서, 공기조화 사이클에 남아있는 냉매의 조성비가 서로 달라지게 된다. 즉, R-32의 냉매가 초기 23%의 비율보다 적어진다.Thus, the composition ratio of the refrigerant remaining in the air conditioning cycle is different from each other. That is, the refrigerant of R-32 becomes smaller than the ratio of initial stage 23%.

이로 인하여, 냉방능력이 기존의 설계 상태보다 저하되기 때문에 문제점이 발생하였다.This causes a problem because the cooling capacity is lower than the existing design state.

예를 들면, R-407C 비공비 혼합냉매는 완전 액체로 냉매가 주입되어야 하며 시스템 내부에 주입되어 있는 냉매의 일부를 퍼지(purge : 예를 들면 배관 내부의 공기를 제거할 때 진공작업이 불가능하거나 힘들 경우 냉매를 배관 내부로 흘린 뒤 시스템 밖의 대기로 방출시키는 작업)용으로 사용할 수 없다.For example, R-407C azeotrope mixed refrigerants must be injected as a complete liquid and purge some of the refrigerant injected into the system. If it is difficult, it cannot be used for the purpose of spilling refrigerant into the piping and releasing it to the atmosphere outside the system.

따라서, 기존 R-22 냉매처럼 사용할 수 없게 되어 다른 방법이 강구되어야 한다.Therefore, it cannot be used like the existing R-22 refrigerant and another method must be taken.

또한 제1도에 나타낸 R-407C 냉매 주입방식은, 응축기(2)와 팽창변(3) 사이에 설치되는 제1냉매주입구(6)는 시스템 제작시 공장에서 높은 압력을 이용하여 냉매를 주입할 경우 사용하기 위해 액라인의 일부에 부착한 주입구이고, 압축기(1)와 증발기(4) 사이에 설치되는 제2냉매주입구(7)는 서비스 시 공기조화장치를 운전하면서 냉매를 주입하기 위해 저압측에 부착된 주입구로, 즉 R-22를 비롯한 단일 또는 공비혼합냉매를 사용하는 공기조화장치에서 옥외서비스 시,In addition, in the R-407C refrigerant injection method shown in FIG. 1, when the first refrigerant inlet 6 installed between the condenser 2 and the expansion valve 3 injects the refrigerant using a high pressure in a factory during system fabrication. An inlet attached to a part of the liquid line for use, and a second refrigerant inlet 7 installed between the compressor 1 and the evaporator 4 is provided at the low pressure side for injecting refrigerant while operating the air conditioner in service. For outdoor service in an attached inlet, i.e. in an air conditioning system using a single or azeotropic mixed refrigerants including R-22,

① 냉매가 모두 누설되었을 때 ... 공기조화장치를 진공펌프(9)를 이용하여 진공 상태를 만든 후, 냉매를 주입하면서 동시에 공기조화장치를 운전하고, 매니폴드 게이지 시스템(8)을 통해 압력을 보면서 일정한 운전 압력에 도달할 때까지 냉매를 주입한다.① When all of the refrigerant leaks out ... The air conditioner is vacuumed using the vacuum pump (9), the refrigerant is injected and the air conditioner is operated at the same time, and the pressure through the manifold gauge system (8) While injecting the refrigerant until a constant operating pressure is reached.

② 냉매의 일부가 누설되었을 때 ‥‥‥ 매니폴드 게이지(8)를 공기조화장치에 연결한 뒤 일정 운전 압력이 될 때까지 냉매를 보충한다.② When a part of the refrigerant leaks ..... Connect the manifold gauge (8) to the air conditioner and replenish the refrigerant until it reaches a certain operating pressure.

그러나, 현재 R-407C 비공비 혼합냉매는 냉매 제조 회사에서 사용자에게 공급될 때 일정한 크기의 압력용기(이하 봄베라고 함) 속에 액 + 가스의 상태로 충전되며, 이 냉매는 액상으로 공기조화장치에 주입되어야 하며 사용 중에 봄베 내부에 남은 마지막 10∼20%의 냉매는 공기조화장치 주입용으로 사용할 수 없다는 문제점이 있다.However, R-407C non-azeotropic mixed refrigerants are now filled with liquid + gas in a certain size pressure vessel (hereinafter referred to as a bomber) when supplied to the user by the refrigerant manufacturer, and the refrigerant is supplied to the air conditioner as a liquid phase. There must be a problem that the last 10 to 20% of the refrigerant remaining inside the cylinder during use cannot be used for the air conditioner injection.

또한, R-407C 냉매를 적용한 공기조화장치의 가장 큰 문제점은 서비스이다.In addition, the biggest problem of the air conditioner using the R-407C refrigerant is service.

본 발명은 상기의 결점을 해소하기 위한 것으로, 공기조화장치를 구성하는 증발기와 압축기 사이에 액분리기겸 냉매주입봄베를, 응축기와 팽창변사이에 수액기 겸 냉매주입봄베를 각각 교체할 수 있는 구조를 갖도록 함으로서, 옥에 서비스 시 무거운 냉매봄베를 가지고 다니지 않아도 되는 편리함과, 교체된 냉매주입봄베는 다른 공기조화장치의 서비스용으로 재활용 가능함을 제공하는 데에 있다.The present invention is to solve the above-mentioned drawbacks, the liquid separator and the refrigerant injection cylinder between the evaporator and the compressor constituting the air conditioning device, the structure of the liquid container and the refrigerant injection cylinder can be replaced between the condenser and the expansion valve respectively. By providing a convenience, the convenience of not having to carry a heavy refrigerant cylinder when servicing the jade, and the replaced refrigerant injection cylinder is to provide a recyclable for the service of other air conditioning system.

제1도는 종래 공기조화장치에 냉매를 주입하는 방법을 간략하게 나타낸 구성도.1 is a configuration diagram briefly showing a method of injecting a refrigerant into a conventional air conditioner.

제2도는 본 발명 공기조화장치에 냉매를 주입하는 방법을 간략하게 나타낸 구성도.2 is a schematic view showing a method of injecting a refrigerant into the air conditioner of the present invention.

제3도는 본 발명 수액기 겸 제2냉매주입봄베가 설치된 상태를 나타낸 구성도.3 is a block diagram showing a state in which the present invention receiver and the second refrigerant injection cylinder is installed.

제4(a)도는 본 발명 액분리기 겸 제1냉매주입봄베가 분리 및 연결된 상태를 나타낸 구성도.Figure 4 (a) is a block diagram showing a state in which the liquid separator and the first refrigerant injection cylinder of the present invention is separated and connected.

제4(b)도는 본 발명 수액기 겸 제2냉매주입봄베가 분리 및 연결된 상태를 나타낸 구성도.Figure 4 (b) is a block diagram showing a state in which the receiver and the second refrigerant injection cylinder of the present invention is separated and connected.

* 도면의 주요부분에 대한 부호의 설명* Explanation of symbols for main parts of the drawings

1 : 압축기 2 : 응축기1: compressor 2: condenser

3 : 팽창변 5a : 흡입배관3: expansion valve 5a: suction pipe

5b : 연결배관 10 : 제1냉매주입봄베5b: Connecting pipe 10: First refrigerant injection bomb

20 : 제2냉매주입봄베 30 : 체결수단20: second refrigerant injection bomb 30: fastening means

본 발명의 실시예를 참부 도면에 의하여 상세히 설명하면 다음과 같다.An embodiment of the present invention will be described in detail with reference to the accompanying drawings.

제2도는 본 발명 에어컨 공기조화장치를 구성하는 증발기(4)와 압축기(1) 사이에 액분리기 겸 제1냉매주입봄베(10)가 착탈 가능하게 설치된 상태를 나타낸 도로써, 냉매주입방식은 기존 공기조화장치의 압축기(1)에 액분리기가 부착되는 경우로서 이 액분리기의 구조 및 기능을 그대로 유지하면서 제1냉매주입봄베(10)로 사용이 가능하다.2 is a view showing a state in which the liquid separator and the first refrigerant injection cylinder 10 is detachably installed between the evaporator 4 and the compressor 1 constituting the air conditioner air conditioner of the present invention. When the liquid separator is attached to the compressor 1 of the air conditioner, it is possible to use the first refrigerant injection cylinder 10 while maintaining the structure and function of the liquid separator as it is.

즉, 제4도에 도시된 바와 같이 액분리 겸 제1냉매주입봄베(10)의 상하단 연결부에는 탈착이 용이한 체결수단(30) 즉, 커플링 식 숫 닛플 또는 숫 볼 밸브가 형성되고, 여기에 연결되기 위한 흡입배관(5a)과 연결배관(5b)의 끝단에는 커플링 식 암 닛플 또는 암 볼 밸브가 형성된다.That is, as shown in Figure 4, the upper and lower connections of the liquid separation and the first refrigerant injection cylinder 10 is formed with a fastening means 30, that is, a coupling-type male nipple or a male ball valve, which are easily removable. A coupling type arm nipple or an arm ball valve is formed at the end of the suction pipe 5a and the connection pipe 5b for connection to the suction pipe 5a and the connection pipe 5b.

따라서, 이들을 연결하여 제2도에 나타낸 바와 같이 공기조화장치를 구성한다.Thus, these are connected to form an air conditioner as shown in FIG.

한편, 필드(Field)에서 냉매가 모두 누설되거나 일부가 누설되어 냉매가 재주입이 필요할 때 초기 설정 냉매량이 주입되어 있는 액분리기 겸 제1냉매주입봄베(10)를 교체하면 된다.On the other hand, when the refrigerant is leaked or partially leaked in the field (Release) needs to be re-injected, the liquid separator and the first refrigerant injection cylinder 10 into which the initial amount of refrigerant is injected may be replaced.

이때, 냉동시스템 제작공정에서 미리 액분리기 겸 제1냉매주입봄베(10)에 저울을 이용하여 초기설정 당시 설정된 최적의 냉매량을 주입해둔다.At this time, the optimum refrigerant amount set at the time of initial setting is injected into the liquid separator and the first refrigerant injection cylinder 10 in advance in the manufacturing process of the refrigeration system.

또한 액분리기 겸 제1냉매주입봄베(10)는 다시 회수되어 정량의 냉매가 주입되고 다른 제품의 서비스용으로 사용한다.In addition, the liquid separator and the first refrigerant injection bomb 10 is recovered again, the quantity of refrigerant is injected and used for service of other products.

제3도에서는 수액기 착탈식 구조의 냉매주입방식이 도시되어 있는데 이것은 기존 공기조화장치에 액분리기가 없는 구조일 때 응축기(2) 다음에 위치한 수액기겸 제2냉매주입봄베(20)를 이용한 것이다.In FIG. 3, a refrigerant injection method having a liquid detachable structure is illustrated, which uses a receiver and a second refrigerant injection cylinder 20 located next to the condenser 2 when the existing air conditioner has no liquid separator.

이와 같이 설치되는 수액기 겸 제2냉매주입봄베(20)의 작동원리나 방법은 제2도 및 제4도에 나타낸 액분리기 겸 제1냉매주입봄베(10)와 동일하다.The operation principle and method of the receiver and the second refrigerant injection cylinder 20 installed as described above are the same as the liquid separator and the first refrigerant injection cylinder 10 shown in FIGS. 2 and 4.

또한, 본 발명 공기조화장치의 냉매주입방식은 다음과 같이 행해진다.The refrigerant injection method of the air conditioner of the present invention is performed as follows.

① 공기조화장치의 내부의 기존 냉매를 방출한다.① Release the existing refrigerant in the air conditioner.

② 냉동시스템의 액분리기 겸 제1냉매주입봄베(10) 또는 수액기 겸 제2냉매주입봄베(20)를 제4(a),(b)도에 도시된 바와 같이 시스템에서 분리한다.(2) Separate the liquid separator and the first refrigerant injection cylinder (10) or the receiver and the second refrigerant injection cylinder (20) of the refrigeration system from the system as shown in FIGS. 4 (a) and (b).

③ ②의 상태에서 시스템을 진공시킨다.③ Vacuum the system in the state of ②.

④ 교체할 액분리기 겸 제1냉매주입봄베(10) 또는 수액기 겸 제2냉매주입봄베(20)를 연결 설치한다.④ Connect and replace the liquid separator and the first refrigerant injection cylinder (10) or the receiver and the second refrigerant injection cylinder (20).

상기와 같이 구성된 본 발명은 다음과 같은 효과가 있다.The present invention configured as described above has the following effects.

첫째, 기존의 장치를 그대로 응용하여 사용할 수가 있다.First, the existing device can be used as it is.

둘째, 필드 서비스 시 무거운 냉매봄베를 가지고 다니지 않아도 된다.Second, there is no need to carry a heavy refrigerant cylinder for field service.

셋째, 제조공장에서 저울 등을 이용하여 설계단계에서 설정한 정확한 냉매량을 주입하기 때문에 냉매 재주입 후에도 냉방능력의 감소가 없다.Third, since the precise amount of refrigerant set at the design stage is injected using a scale in a manufacturing plant, there is no reduction in cooling capacity even after the refrigerant is reinjected.

넷째, 종래의 냉매 재주입방식에서 극복하기 힘든 재주입 냉매의 조성비 변화를 막을 수가 있다.Fourth, it is possible to prevent a change in the composition ratio of the re-injected refrigerant which is difficult to overcome in the conventional refrigerant re-injection method.

다섯째, 교체된 냉매주입봄베는 다른 공기조화장치의 필드 서비스용으로 재활용이 가능하다.Fifth, the replaced refrigerant injection cylinder can be recycled for field service of other air conditioners.

여섯째, 기존의 창문형 에어컨 같이 냉매 재주입을 위한 특별한 조치 즉 배관의 일부를 잘라 냉매주입구를 용접 부착하는 등의 조치를 취하지 않아도 된다.Sixth, it is not necessary to take special measures for re-injection of the refrigerant like the existing window type air conditioners, ie, cut a part of the pipe and weld the refrigerant inlet.

본 발명은 냉매 재주입이 용이한 공기조화장치에 관한 것으로, 특히 공기조화장치를 구성하는 증발기와 압축기 사이에 액분리기 겸 냉매주입봄베를, 응축기와 팽창변 사이에 수액기 겸 냉매주입봄베를 각각 교체할 수 있는 구조를 갖도록 함으로서, 서비스 시 무거운 냉매봄베를 가지고 다니지 않아도 되는 편리함과, 교체된 냉매주입봄베는 다른 냉동시스템의 옥외서비스용으로 재활용 가능하도록 구성된 냉매 재주입이 용이한 공기조화장치에 관한 것이다.The present invention relates to an air conditioner that is easy to re-inject the refrigerant, and in particular, a liquid separator and a refrigerant injection cylinder between the evaporator and the compressor constituting the air conditioner, and replace the receiver and refrigerant injection cylinder between the condenser and the expansion valve, respectively. By providing a structure that can be carried out, the convenience of not having to carry a heavy refrigerant cylinder during service, and the replaced refrigerant injection cylinder is a refrigerant re-injection air conditioning device configured to be recyclable for outdoor service of other refrigeration system will be.

Claims (2)

공기조화기를 구성하는 증발기와 압축기 사이에 액분리기 겸 냉매주입봄베를 설치하고, 이 냉매주입 봄베의 양단에 형성된 커플링식 숫 닛플과 체결되기 위한 연결배관의 끝단에 커플링식 암 닛플이 형성되어 냉매주입봄베의 착탈이 용이한 구조로 형성됨을 특징으로 하는 냉매 재주입이 용이한 공기조화장치.A liquid separator and a refrigerant injection cylinder are installed between the evaporator and the compressor constituting the air conditioner, and a coupling type female nipple is formed at the end of the connection pipe for coupling with the coupling type male nipple formed at both ends of the refrigerant injection cylinder. Refrigerant is easy to re-injection air conditioning apparatus, characterized in that formed in the structure of the removable cylinder. 공기조화기를 구성하는 응축기와 증발기 사이에 수액기 겸 냉매 주입봄베를 설치하고, 이 냉매 주입 봄베의 양단에 형성된 커플링식 숫 닛플과 체결되기 위한 연결배관의 끝단에 커플링식 암 닛플이 형성되어 냉매 주입 봄베의 착탈이 용이한 구조로 형성됨을 특징으로 하는 냉매 재주입이 용이한 공기조화장치.A receiver and refrigerant injection cylinder is installed between the condenser and the evaporator constituting the air conditioner, and a coupling type arm nipple is formed at the end of the connecting pipe for coupling with the coupling type male nipple formed at both ends of the refrigerant injection cylinder. Refrigerant is easy to re-injection air conditioning apparatus, characterized in that formed in the structure of the removable cylinder.
KR1019960075628A 1996-12-28 1996-12-28 Airconditioner capable of re-inserting refrigerant KR100212912B1 (en)

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