KR19990021468A - Bending method of pipe for fin condenser and fin condenser - Google Patents
Bending method of pipe for fin condenser and fin condenser Download PDFInfo
- Publication number
- KR19990021468A KR19990021468A KR1019970045013A KR19970045013A KR19990021468A KR 19990021468 A KR19990021468 A KR 19990021468A KR 1019970045013 A KR1019970045013 A KR 1019970045013A KR 19970045013 A KR19970045013 A KR 19970045013A KR 19990021468 A KR19990021468 A KR 19990021468A
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- South Korea
- Prior art keywords
- pipe
- condenser
- wings
- bending
- present
- Prior art date
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D53/00—Making other particular articles
- B21D53/02—Making other particular articles heat exchangers or parts thereof, e.g. radiators, condensers fins, headers
- B21D53/08—Making other particular articles heat exchangers or parts thereof, e.g. radiators, condensers fins, headers of both metal tubes and sheet metal
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B39/00—Evaporators; Condensers
- F25B39/04—Condensers
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D1/00—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators
- F28D1/02—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid
- F28D1/04—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits
- F28D1/047—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits the conduits being bent, e.g. in a serpentine or zig-zag
- F28D1/0477—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with tubular conduits the conduits being bent, e.g. in a serpentine or zig-zag the conduits being bent in a serpentine or zig-zag
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F1/00—Tubular elements; Assemblies of tubular elements
- F28F1/10—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses
- F28F1/12—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element
- F28F1/122—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element and being formed of wires
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F1/00—Tubular elements; Assemblies of tubular elements
- F28F1/10—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses
- F28F1/12—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element
- F28F1/14—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element and extending longitudinally
- F28F1/16—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element and extending longitudinally the means being integral with the element, e.g. formed by extrusion
Abstract
본 발명은 냉동시스템에 사용되는 응축기에 관한 것으로서, 특히 열전달 효율을 향상시키도록 냉매가 흐르는 파이프의 외주면에 날개를 돌출되게 한 핀형 응축기 및 그 밴딩방법에 관한 것이다.The present invention relates to a condenser used in a refrigeration system, and more particularly, to a fin-type condenser and a banding method for protruding a wing on an outer circumferential surface of a pipe through which a refrigerant flows to improve heat transfer efficiency.
이에 따른 본 발명의 구성은 압축기, 증발기 및 팽창밸브와 함께 냉동사이클을 구성하는 응축기에 있어서, 냉매가 흐르는 파이프의 외주면 양측에 날개가 돌출된 것을 특징으로 한다. 여기서, 상기 파이프는 알루미늄소재로 압출된 것을 특징으로 한다. 한편, 이와 같이 구성된 파이프를 밴딩하는 본 발명의 방법적 구성은 목적한 길이 간격으로 소정의 폭만큼 날개를 자르는 제1단계와, 상기 날개가 잘려진 파이프의 각 부분을 반복되게 밴딩하여 동일 평면을 이루게 하는 제2단계와, 상기 작업에 의해 여러 겹으로 밴딩된 파이프 전체를 소정의 폭으로 앞뒤로 반복하여 밴딩하는 제3단계로 이루어진다.Accordingly, the configuration of the present invention is characterized in that the wings protrude from both sides of the outer circumferential surface of the pipe through which the refrigerant flows in the condenser constituting the refrigeration cycle together with the compressor, the evaporator and the expansion valve. Here, the pipe is characterized in that the extruded aluminum material. On the other hand, the method configuration of the present invention for bending the pipe configured as described above is the first step of cutting the wings by a predetermined width at the desired length interval, and repeatedly bending each part of the pipe cut the wings to form the same plane And a third step of repeatedly bending the entire pipe bent in several layers by the operation back and forth with a predetermined width.
이에 따른 본 발명에 의하면, 냉매가 흐르는 파이프 양측에 날개가돌출되게 압출된 구조이므로 전열면적이 넓어 열교환 효율이 향상된다는 이점이 있으며, 기존의 용접작업이 제거됨에 따라 작업성 개선 및 재료비의 절감을 꾀할 수 있다.According to the present invention, since the structure is extruded so that the wings protrude on both sides of the refrigerant flow pipe, there is an advantage that the heat transfer area is wide, the heat exchange efficiency is improved, and as the existing welding work is removed, workability and material cost reduction You can do it.
Description
본 발명은 냉동시스템에 사용되는 응축기에 관한 것으로서, 특히 열전달 효율을 향상시키도록 냉매가 흐르는 파이프의 외주면에 날개를 돌출되게 한 핀형 응축기 및 그 밴딩방법에 관한 것이다.The present invention relates to a condenser used in a refrigeration system, and more particularly, to a fin-type condenser and a banding method for protruding a wing on an outer circumferential surface of a pipe through which a refrigerant flows to improve heat transfer efficiency.
응축기는 압축기, 증발기 및 팽창밸브와 함께 냉동사이클을 구성하여 냉장고 또는 공기조화기 등에 사용되는 열교환기이다.The condenser is a heat exchanger used in a refrigerator or an air conditioner by forming a refrigeration cycle together with a compressor, an evaporator and an expansion valve.
냉장고에 사용되는 응축기는 보통 팬을 이용하여 대기의 공기를 열교환기 표면으로 지나가게 하면서 응축기의 열을 빼앗게 되어 있다.Condensers used in refrigerators usually take the heat out of the condenser by using a fan to pass atmospheric air to the heat exchanger surface.
또한, 다른 한 방식으로는 팬을 사용하지 않고 자연대류 열전달방식을 이용하여 냉장고의 뒷벽에 세워놓거나 내부에 묻어 놓은 입형 응축기가 있다.In addition, there is a vertical condenser built on the back wall of the refrigerator or buried inside by using a natural convection heat transfer method without using a fan.
상기한 두 가지 타입은 응축기의 관로를 흐르는 냉매를 외부의 공기와 열교환시켜 상변화되게 하는 공랭식으로 구분지을 수 있다.The two types can be classified into an air-cooling type that causes the refrigerant flowing through the condenser pipe to be phase-changed by exchanging heat with external air.
이러한 공랭식 응축기는 열전달 효율을 향상시키기 위하여 냉매가 흐르는 파이프를 다수겹으로 밴딩하여 외부 공기와의 접촉면적을 크게 하는데, 종래의 응축기는 파이프의 소재가 보통 철로 되어 있기 때문에 파이프의 강도가 커 밴딩 작업이 어려울 뿐만 아니라 중량이 크다.In order to improve heat transfer efficiency, such an air-cooled condenser bands a pipe in which a refrigerant flows in multiple layers to increase the contact area with external air. In the conventional condenser, since the material of the pipe is usually made of steel, the pipe strength is increased. This is not only difficult but also heavy in weight.
또한, 부식을 방지하기 위해 도료를 칠하기 때문에 부품의 가격 상승을 초래한다.In addition, paint is applied to prevent corrosion, which leads to an increase in the price of parts.
한편, 이러한 종래의 응축기는 전열 면적을 더욱 크게 하도록 다수겹으로 밴딩된 철재관의 전면과 후면에 소정의 간격으로 철사를 일일이 용접하여 사용하는 바, 그 작업성이 복잡하다.On the other hand, such a conventional condenser is used to weld the wires at a predetermined interval on the front and rear of the steel pipe bent in multiple layers to further increase the heat transfer area, the workability is complicated.
종래의 응축기는 도 1 내지 도 3을 참조하여 설명하는 다음과 같이 제조된다.Conventional condensers are manufactured as follows with reference to FIGS.
도 1에서와 같이 철재로 이루어진 파이프(10)를 목적한 길이 만큼 여러 겹으로 밴딩시킨다. 이 상태에서 그 전면과 후면에 소정의 간격으로 철사(12)를 용접하는데(도 2참조) 그 용접 작업을 설명하면 다음과 같다.As shown in FIG. 1, the pipe 10 made of steel is banded in several layers by the desired length. In this state, the wire 12 is welded to the front and rear surfaces at predetermined intervals (see FIG. 2).
여러 겹으로 밴딩된 파이프(10)의 폭보다 작게 임의의 길이로 절단된 다수개의 철사(12)를 밴딩된 파이프(10)의 직교되는 방향으로 촘촘하게 전기 용접 한다. 이때, 밴딩된 파이프(10)의 일면에 먼저 소정의 폭으로 전기 용접을 하는 바, 파이프(10)의 후면에도 철사를 용접하기 위한 간격을 갖게 한다. (물론, 밴딩된 파이프의 앞 뒷면에 교차되도록 철사를 동시에 용접할 수도 있다.)The plurality of wires 12 cut into arbitrary lengths smaller than the width of the pipe 10, which is several-fold, are tightly welded in the orthogonal direction of the banded pipe 10. At this time, the first surface of the bent pipe 10 is first subjected to electric welding with a predetermined width, so that the rear surface of the pipe 10 has a gap for welding the wire. (Of course, the wires can be welded simultaneously to intersect the front and back of the bent pipe.)
이와 같이 밴딩된 파이프(10)의 앞 뒷면에 교차되도록 소정의 폭으로 철사(12)를 용접한 다음, 담요를 접듯이 밴딩된 파이프(10) 전체를 여러 겹으로 밴딩한다.(도 3참조)The wire 12 is welded to a predetermined width so as to intersect the front and rear surfaces of the bent pipe 10, and then the entire banded pipe 10 is banded in multiple layers like folding a blanket (see FIG. 3).
상기와 같이 제조되는 종래의 응축기는 전술한 바와 같은 재질에 따른 문제점 뿐만 아니라, 제조 공정에 따르는 용접작업이 시간의 소비와 비용의 상승으로 이어진다는 문제점이 있다.Conventional condenser manufactured as described above has a problem that not only the problem according to the material as described above, but also the welding work according to the manufacturing process leads to the consumption of time and the increase of cost.
본 발명은 상기와 같은 문제점을 감안하여 안출된 것으로서, 본 발명의 목적은 열전달 효율을 향상시키며 부품의 가격 인하를 유도할 수 있는 응축기를 제공하는 데 있다.The present invention has been made in view of the above problems, and an object of the present invention is to provide a condenser capable of improving heat transfer efficiency and inducing a price reduction of parts.
또한, 본 발명의 다른 목적은 그 제조 공정을 단순화시키는 데 있다.Another object of the present invention is to simplify the manufacturing process.
도 1은 종래 응축기용 파이프의 절곡방법을 설명하기 위한 도면,1 is a view for explaining a bending method of a conventional condenser pipe;
도 2는 종래 응축기용 파이프에 철사를 접합하는 방법을 설명하기 위한 도면,2 is a view for explaining a method for joining the wire to the conventional condenser pipe,
도 3은 종래 응축기용 파이프를 밴딩하는 방법을 설명하기 위한 도면,3 is a view for explaining a method for bending a pipe for a conventional condenser,
도 4는 본 발명에 의한 응축기용 파이프의 단면도,4 is a cross-sectional view of a pipe for a condenser according to the present invention,
도 5는 본 발명에 의한 응축기용 파이프의 벤딩방법을 설명하기 위한 도면,5 is a view for explaining a bending method of the condenser pipe according to the present invention;
도 6은 본 발명에 의한 응축기용 파이프가 밴딩된 상태를 나타내는 측면도이다.6 is a side view showing a state in which the pipe for the condenser according to the present invention is bent.
도면의 주요부분에 대한 부호의 설명Explanation of symbols for main parts of the drawings
20 : 파이프 22 : 날개20 pipe 22 wings
상기와 같은 목적을 실현하기 위한 본 발명의 구성은 압축기, 증발기 및 팽창밸브와 함께 냉동사이클을 구성하는 응축기에 있어서, 냉매가 흐르는 파이프의 외주면 양측에 날개가 돌출된 것을 특징으로 한다.The constitution of the present invention for realizing the above object is characterized in that the wings protrude from both sides of the outer circumferential surface of the pipe through which the refrigerant flows in the condenser constituting the refrigeration cycle together with the compressor, the evaporator and the expansion valve.
이때, 핀의 폭은 냉매관의 크기에 따라 열전달 최적의 크기를 갖도록 설계되어야 한다.At this time, the width of the fin should be designed to have an optimal size of heat transfer according to the size of the refrigerant pipe.
한편, 상기 파이프는 알루미늄소재로 압출된 것을 특징으로 한다.On the other hand, the pipe is characterized in that the extruded aluminum material.
또한, 상기 날개에는 임의의 간격으로 다수개의 슬릿이 형성된 것을 특징으로 한다.In addition, the blade is characterized in that a plurality of slits are formed at any interval.
상기와 같이 구성된 파이프를 밴딩하는 본 발명의 방법적 구성은 목적한 길이 간격으로 소정의 폭만큼 날개를 자르는 제1단계와, 상기 날개가 잘려진 파이프의 각 부분을 반복되게 밴딩하여 동일 평면을 이루게 하는 제2단계와, 상기 작업으로 여러 겹으로 밴딩된 파이프 전체를 소정의 폭으로 앞뒤로 반복하여 밴딩하는 제3단계로 이루어진다.The method configuration of the present invention for bending the pipe configured as described above is a first step of cutting the wings by a predetermined width at a desired length interval, and repeatedly bending each part of the pipe cut the wings to form the same plane And a third step of repeatedly bending the entire pipe bent in several layers by the above operation back and forth with a predetermined width.
여기서, 상기 제2단계에서 서로 접촉되는 각 파이프의 날개가 일직선을 이루게 밴딩하는 것을 특징으로 한다.Here, the blades of the pipes in contact with each other in the second step is characterized in that the bending to form a straight line.
이하, 본 발명의 목적을 실현할 수 있는 가장 바람직한 실시예를 당업자가 용이하게 실시할 수 있을 정도로 상세히 설명한다. 또한, 종래예의 구성과 동일한 부분은 동일한 명칭 및 동일한 부호를 부여하며 중복되는 설명은 생략한다.Best Mode for Carrying Out the Invention The most preferred embodiments that can realize the objects of the present invention will now be described in detail to enable those skilled in the art to easily implement. In addition, the same part as the structure of a prior art example attaches | subjects the same name and the same code | symbol, and the overlapping description is abbreviate | omitted.
본 실시예에 의한 냉동 시스템의 응축기는 압축기, 증발기 및 팽창밸브와 함께 냉동사이클을 구성하는 바, 냉매가 흐르는 파이프의 단면을 도시한 도 4에서와 같이 파이프(20)의 외주면 양측에 날개(22)가 돌출되어 있다.The condenser of the refrigeration system according to the present embodiment constitutes a refrigeration cycle together with a compressor, an evaporator, and an expansion valve. As shown in FIG. 4, a cross section of a pipe through which refrigerant flows, as shown in FIG. ) Is protruding.
여기서, 상기 파이프(20)는 알루미늄소재로 압출된 것으로서, 상기 날개(22)는 외부 공기와의 열교환 향상을 위해 서로 반대방향으로 라운딩되어 있다.Here, the pipe 20 is extruded from an aluminum material, the blades 22 are rounded in opposite directions to improve heat exchange with the outside air.
도 5 및 도 6은 상기와 같이 구성된 파이프를 밴딩하는 순서를 나타내는 도면이다. 이를 참조하여 설명하여 밴딩 방법을 설명한다.5 and 6 are diagrams showing the order of bending the pipe configured as described above. This will be described with reference to the banding method.
먼저, 양측면에 날개(22)가 형성된 상태로 압출되어 나오는 파이프(20)에서 목적한 길이 간격으로 소정의 폭만큼 날개(22)를 자른다. 이때, 날개(22)를 자르는 폭은 파이프(20)가 날개에 간섭되지 않고 밴딩될 수 있을 정도면 족하므로 너무 크지 않게 한다.First, the blades 22 are cut by a predetermined width at a desired length interval from the pipe 20 extruded with the blades 22 formed on both sides. At this time, the width to cut the blade 22 is enough so that the pipe 20 can be bent without interfering with the blade so as not to be too large.
다음에, 상기 날개(22)가 잘려진 파이프(20)의 각 부분을 반복되게 밴딩하여 파이프(20) 전체가 동일 평면을 이루게 한다. 이때, 서로 접촉되는 각 파이프(20)의 날개(22)가 일직선을 이루게 한다.Next, the respective sections of the pipe 20 from which the vanes 22 are cut are repeatedly bent so that the entire pipe 20 is coplanar. At this time, the blades 22 of each pipe 20 in contact with each other to form a straight line.
그리고, 상기 작업으로 여러 겹으로 밴딩된 파이프(20) 전체를 소정의 폭으로 앞뒤로 반복하여 밴딩한다.Then, the entire pipe 20 bent in several layers by the above operation is repeatedly bent back and forth with a predetermined width.
이와 같이 밴딩된 파이프의 일단은 압축기의 출구쪽과 연결하고, 타단은 팽창장치 또는 모세관에 연결하여 응축기의 역할을 수행할 수 있게 한다.One end of the bent pipe is connected to the outlet of the compressor, and the other end is connected to an expansion device or capillary tube to serve as a condenser.
상기와 같이 구성된 본 발명에 의하면 냉매가 흐르는 파이프 양측에 날개가돌출되게 압출된 구조이므로 전열면적이 넓어 열교환 효율이 향상된다는 이점이 있으며, 기존의 용접작업이 제거됨에 따라 작업성 개선 및 재료비의 절감을 꾀할 수 있다.According to the present invention configured as described above, because the structure is extruded so that the wings protrude on both sides of the refrigerant flow pipe, the heat transfer area is wide, the heat exchange efficiency is improved, and as the existing welding work is removed, workability improvement and material cost reduction Can be designed.
또한, 응축기의 파이프가 알루미늄 소재로 되어 있기 때문에 기존의 철재 파이프보다 가볍다는 이점이 있으며, 열전달계수가 커 열교환 효율이 향상된다는 이점도 있다.In addition, since the condenser pipe is made of aluminum, it has the advantage of being lighter than conventional steel pipes, and also has the advantage of improving heat exchange efficiency due to a large heat transfer coefficient.
또한, 알루미늄 산화처리(Beomite) 또는 수지피막(Dipping)으로 부식에 따른 표면처리문제를 해결할 수 있으므로, 철재 응축기의 도료 사용보다 저렴한 가격으로 해결할 수 있다.In addition, the aluminum oxide treatment (Beomite) or resin coating (Dipping) can solve the problem of surface treatment due to corrosion, it can be solved at a lower price than the use of the paint of the steel condenser.
상기 설명된 본 실시예는 단지 예시에 불과한 것이고 이에 한정되지 않는다.This embodiment described above is merely illustrative and is not limited thereto.
또한, 본 발명이 속한 분야의 당업자는 본 발명의 구성에 변형을 꾀하여 실시할 수 있겠으나, 첨부된 청구범위를 이해한다면 이러한 변형된 실시는 본 발명의 범위에 속한다는 것이 자명해질 것이다.Also, those skilled in the art to which the present invention pertains may make modifications to the construction of the present invention, and it will be apparent that such modified implementations fall within the scope of the present invention if the appended claims are understood.
Claims (5)
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1019970045013A KR19990021468A (en) | 1997-08-30 | 1997-08-30 | Bending method of pipe for fin condenser and fin condenser |
| DE19805955A DE19805955A1 (en) | 1997-08-30 | 1998-02-13 | Condenser for refrigeration or air-conditioning plant |
| CN98105350A CN1210241A (en) | 1997-08-30 | 1998-02-27 | Fin-type condenser and method for manufacturing the same |
| JP10048441A JPH1183366A (en) | 1997-08-30 | 1998-02-27 | Fin type condenser and manufacture thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1019970045013A KR19990021468A (en) | 1997-08-30 | 1997-08-30 | Bending method of pipe for fin condenser and fin condenser |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| KR19990021468A true KR19990021468A (en) | 1999-03-25 |
Family
ID=19520478
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| KR1019970045013A KR19990021468A (en) | 1997-08-30 | 1997-08-30 | Bending method of pipe for fin condenser and fin condenser |
Country Status (4)
| Country | Link |
|---|---|
| JP (1) | JPH1183366A (en) |
| KR (1) | KR19990021468A (en) |
| CN (1) | CN1210241A (en) |
| DE (1) | DE19805955A1 (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10008780A1 (en) * | 2000-02-04 | 2001-08-09 | Krytem Gmbh | Method and apparatus for deliberately influencing heat exchange on evaporators for cryogenic liquids uses vertical evaporator pipes with metal ribs on outside tightly adjoining |
| GB0007925D0 (en) | 2000-03-31 | 2000-05-17 | Npower | A heat exchanger |
| CN103017421B (en) * | 2012-12-27 | 2015-08-26 | 合肥美的电冰箱有限公司 | Wire-tube evaporator and the refrigerator with this wire-tube evaporator |
| CN104422311A (en) * | 2013-08-29 | 2015-03-18 | 张鑫 | Pure backflow less-contact duct piece integrated high-efficiency air pipe heat exchanger |
| CN105758221A (en) * | 2014-12-16 | 2016-07-13 | 青岛道空优科技有限公司 | Novel oxygenator condenser |
| CN107883614A (en) * | 2017-12-06 | 2018-04-06 | 广东美的制冷设备有限公司 | Radiation heat transfer piece, radiation recuperator and air-conditioning system |
-
1997
- 1997-08-30 KR KR1019970045013A patent/KR19990021468A/en not_active Application Discontinuation
-
1998
- 1998-02-13 DE DE19805955A patent/DE19805955A1/en not_active Ceased
- 1998-02-27 JP JP10048441A patent/JPH1183366A/en active Pending
- 1998-02-27 CN CN98105350A patent/CN1210241A/en active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| DE19805955A1 (en) | 1999-03-04 |
| CN1210241A (en) | 1999-03-10 |
| JPH1183366A (en) | 1999-03-26 |
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