KR20010005045A - Heat exchanger of parallel flow type - Google Patents

Heat exchanger of parallel flow type Download PDF

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Publication number
KR20010005045A
KR20010005045A KR1019990025832A KR19990025832A KR20010005045A KR 20010005045 A KR20010005045 A KR 20010005045A KR 1019990025832 A KR1019990025832 A KR 1019990025832A KR 19990025832 A KR19990025832 A KR 19990025832A KR 20010005045 A KR20010005045 A KR 20010005045A
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KR
South Korea
Prior art keywords
refrigerant
tube
heat exchanger
refrigerant flow
tubes
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KR1019990025832A
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Korean (ko)
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KR100294826B1 (en
Inventor
조영두
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황한규
만도공조 주식회사
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Priority to KR1019990025832A priority Critical patent/KR100294826B1/en
Publication of KR20010005045A publication Critical patent/KR20010005045A/en
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Publication of KR100294826B1 publication Critical patent/KR100294826B1/en

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Classifications

    • 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
    • F28F1/02—Tubular elements of cross-section which is non-circular
    • F28F1/022—Tubular elements of cross-section which is non-circular with multiple channels
    • 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
    • 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
    • F28F1/40—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only inside the tubular element

Abstract

PURPOSE: A parallel flow heat exchanger is provided to improve heat exchange efficiency while reducing the number of tubes for use of a refrigerant flow channel. CONSTITUTION: A plurality of tubes(3) for a refrigerant flow channel(6) are installed on header pipes, and a plurality of radiating fins are arranged onto and beneath the tubes. A baffle is installed to the header pipes so as to section the tube. The tubes for the refrigerant flow channel have the same outer size, and the tube has plural refrigerant flow channels arranged within the tube and which form a hydraulic diameter portion. The refrigerant flow channel of the tube has a sectional surface gradually decreasing as it goes toward the outlet side of the tube, while maintaining the number of tubes constant. Thus, the heat transfer coefficient of the refrigerant is prevented from being reduced. The tube where the refrigerant flow channel is formed, is sectioned at regular intervals by the baffle. A partition(7) with a plurality of convex-concave portions is arranged within the tube so as to form plural refrigerant flow channels.

Description

평행유동형 열교환기{Heat exchanger of parallel flow type}Heat exchanger of parallel flow type

본 발명은 양측의 헤더파이프 상에 다수의 냉매유로용 튜브를 설치하고 이에 방열핀을 설치하는 열교환기에 있어서, 상기 냉매유로용 튜브내에 복수개의 냉매유로를 형성하고 상기 튜브의 외형크기는 동일하게 하면서 내부의 수력직경을 작게형성하여 냉매의 유로인 튜브의 수를 줄이면서도 열교환 효율을 향상시킬 수 있도록 한 평행유동형 열교환기에 관한 것이다.The present invention provides a heat exchanger in which a plurality of refrigerant flow path tubes are installed on both header pipes and heat radiating fins are formed, and a plurality of refrigerant flow paths are formed in the refrigerant flow path tube and the outer dimensions of the tubes are the same. The present invention relates to a parallel flow type heat exchanger which can reduce the number of tubes, which are the flow paths of the refrigerant, to improve the heat exchange efficiency by forming a smaller hydraulic diameter.

일반적으로 냉매가 냉매유로를 통과하면서 방열핀과 냉매유로용 튜브에 의하여 방열작용을하여 열교환이 이루어지도록 하는 열교환기는 도 1에서와 같이 양측의 헤더파이프(1)(2)상에 다수의 냉매유로용 튜브(301)를 연결설치하고 이 냉매유로용 튜브(301)의 양방에 다수의 방열핀(4)을 설치하여 구성되어 있으며, 상기 일측의 헤더파이프 공급라인을 통하여 냉매가 공급되면, 이 공급된 냉매가 상기 헤더파이프와 냉매유로인 각 튜브들 사이를 통하여 순환하면서 열교환이 이루어지도록 되어 있었다.In general, a heat exchanger that radiates heat by a heat radiating fin and a tube for a refrigerant flow path while the refrigerant passes through the refrigerant flow path is used for a plurality of refrigerant flow paths on the header pipes (1) and (2) on both sides as shown in FIG. It is constructed by connecting the tube 301 and installing a plurality of heat dissipation fins 4 on both sides of the refrigerant passage tube 301, and when the refrigerant is supplied through the header pipe supply line on one side, the supplied refrigerant Was circulated through each of the tubes, which are the header pipe and the refrigerant flow path, to perform heat exchange.

한편, 상기와 같이 구성된 종래의 열교환기는 상기 냉매유로인 각 튜브마다 하나의 냉매유로를 형성하고 있었기 때문에 상기 열교환기의 용량을 증대시키기 위해서는 상기 튜브의 설치 수를 증대되는 만큼 더 설치해야 했으며, 이에 따라 상기 열교환기의 부피가 커지게 되고 이 부피의 커짐에 따라 상기 냉매의 순환길이가 길어지게 되어 공급측에서 출구쪽으로 갈수록 열전달 계수가 감소하게 되어 열교환 효율이 저하되는 폐단이 있었다.On the other hand, the conventional heat exchanger configured as described above was to form one refrigerant passage for each tube that is the refrigerant passage, so in order to increase the capacity of the heat exchanger had to be installed more as the number of installation of the tube is increased, so As a result, the volume of the heat exchanger is increased, and as the volume increases, the circulation length of the refrigerant is increased, and the heat transfer coefficient decreases from the supply side toward the outlet, thereby reducing the heat exchange efficiency.

또, 상기의 점을 감안하여 상기 냉매유로용 튜브를 출구쪽으로 갈수록 단면적을 줄이도록하여 냉매의 질량속도를 증가시키도록 한 것이 안출된바 있었으며, 이는 냉매의 질량속도가 열전달계수의 증가와 비례하게 되므로 열전달 성능에 영향을 미치는 열전달면적이 출구로 갈수록 감소하게 되어 열교환 효율이 감소하게 되는 등의 폐단이 있었고 상기 늘어난 부피에 의하여 상기 열교환기의 설치가 난해하게 되는 등의 문제점이 있었다.In addition, in view of the above, it has been proposed that the mass flow rate of the refrigerant is increased by reducing the cross-sectional area of the refrigerant flow channel toward the outlet, which is proportional to the increase in the heat transfer coefficient. Therefore, the heat transfer area affecting the heat transfer performance decreases toward the outlet, resulting in a decrease in heat exchange efficiency, and a problem such as difficulty in installing the heat exchanger due to the increased volume.

본 발명은 상기와 같은 종래의 제반 문제점을 감안하여 안출한 것으로 양측의 헤더파이프 상에 다수의 냉매유로용 튜브를 설치하고 이에 방열핀을 설치하는 열교환기에 있어서, 상기 냉매유로용 튜브내에 복수개의 냉매유로를 형성하고 상기 튜브의 외형크기는 동일하게 하면서 내부의 수력직경을 작게형성하여 냉매의 유로인 튜브의 수를 줄이면서도 열교환 효율을 향상시킬 수 있도록 한 평행유동형 열교환기를 제공하려는 것인바, 이를 이하에서 첨부한 도면과 실시예에 의거하여 상세히 설명하면 다음과 같다.The present invention has been made in view of the above-described conventional problems, and in the heat exchanger having a plurality of refrigerant passage tubes installed on both header pipes and heat dissipation fins installed therein, a plurality of refrigerant passages in the refrigerant passage tubes are provided. To form a and the external size of the tube to the same while forming a smaller hydraulic diameter inside to provide a parallel flow type heat exchanger to improve the heat exchange efficiency while reducing the number of tubes that are the flow path of the refrigerant, which will be described below When described in detail based on the accompanying drawings and embodiments as follows.

도 1은 종래의 열교환기 구조를 나타내는 정면도1 is a front view showing a conventional heat exchanger structure

도 2는 본 발명 실시예의 일부 절제 사시도2 is a partially cutaway perspective view of an embodiment of the present invention

도 3은 본 발명의 다른 실시예를 나타내는 사시도3 is a perspective view showing another embodiment of the present invention

도 4는 본 발명 실시예의 냉매유로용 튜브의 단면상태를 나타내는 단면도Figure 4 is a cross-sectional view showing a cross-sectional state of the refrigerant passage tube of the embodiment of the present invention.

도 5 및 도 6은 도 4의 다른 실시예를 나타내는 단면 발췌도5 and 6 are cross-sectional excerpts showing another embodiment of FIG.

〈도면의 주요 부분에 대한 부호의 설명〉<Explanation of symbols for main parts of drawing>

1,2 : 헤더파이프1,2: header pipe

3 : 냉매유로용 튜브3: refrigerant flow tube

4 : 방열핀4: heat dissipation fin

5 : 배플5: baffle

6 : 냉매유로6: refrigerant flow path

7 : 간막이7: the partition

8 : 요철부8: uneven portion

9 : 돌기9: turning

양측의 헤더파이프(1)(2)상에 다수의 냉매유로용 튜브(3)를 연결설치하고 이 냉매유로용 튜브(3)의 상하에 다수의 방열핀(4)을 설치하며 상기 헤더파이프(1)(2)들에는 배플(5)를 설치하여 상기 튜브(3)를 구획하도록 구성된 열교환기에 있어서, 상기 냉매용 튜브(3)의 외형크기는 모두 동일하게 형성하고 상기 튜브(3)의 내부에는 수력직경부를 형성하는 여러개의 냉매유로(6)를 형성하며 상기 튜브(3)의 냉매유로들을 출구쪽으로 갈수록 튜브의 수를 동일하게 하면서 점진적으로 단면적을 작게 형성하여 냉매의 열전달 계수 감소를 억제시키고 상기 냉매유로(6)가 형성된 냉매유로용 튜브(3)를 동일간격으로 상기 배플(5)에 의하여 구획하도록 구성된 것이다.A plurality of refrigerant passage tubes 3 are connected to and installed on both header pipes 1 and 2, and a plurality of heat dissipation fins 4 are installed above and below the refrigerant passage tube 3, and the header pipe 1 In the heat exchanger configured to partition the tube 3 by installing a baffle 5 in the 2), the external dimensions of the refrigerant tube 3 are all the same, and the inside of the tube 3 is It forms a plurality of refrigerant passages (6) forming a hydraulic diameter portion and gradually decreases the heat transfer coefficient of the refrigerant by gradually forming a smaller cross-sectional area while equalizing the number of the refrigerant passages of the tube (3) toward the outlet The refrigerant passage tube 3 formed with the refrigerant passage 6 is configured to be partitioned by the baffles 5 at equal intervals.

상기 냉매유로용 튜브(3)내에는 다수의 요철부(8)가 형성된 간막이(7)를 형성하여 상기 여러개의 냉매유로(6)가 형성되도록 구성할 수 있으며 상기 요철부(8)는 원형 또는 장방형으로 형성할 수도 있고, 돌기(9)형으로 형성하여 상기 냉매의 열전달 계수 감소를 억제시킬 수 있도록 구성된 것이다.The refrigerant passage tube 3 may be configured to form a partition 7 having a plurality of uneven portions 8 formed therein such that the plurality of refrigerant passages 6 are formed, and the uneven portions 8 are circular or It may be formed in a rectangular shape, or may be formed in the shape of the projection 9 so as to suppress a decrease in the heat transfer coefficient of the refrigerant.

이상과 같이 구성된 본 발명은 상기 양측의 헤더파이프(1)(2)상에 다수의 냉매유로용 튜브(3)를 연결설치하고 이 냉매유로용 튜브(3)의 상하에 다수의 방열핀(4)을 설치하며 상기 헤더파이프(1)(2)들에는 배플(5)를 설치하여 상기 튜브(3)를 구획하도록 구성된 열교환기에 있어서, 상기 냉매용 튜브(3)의 외형크기는 모두 동일하게 형성하고 상기 튜브(3)의 내부에는 수력직경부를 형성하는 여러개의 냉매유로(6)를 형성하며 상기 튜브(3)의 냉매유로들을 출구쪽으로 갈수록 튜브의 수를 동일하게 하면서 점진적으로 단면적을 작게 형성하므로서 냉매의 흐름에 따른 열전달 계수 감소를 억제시키고 상기 냉매유로(6)가 형성된 냉매유로용 튜브(3)를 동일간격으로 상기 배플(5)에 의하여 구획하도록 구성하므로서 상기 냉매유로용 튜브(3)들을 구획된 부위별로 사용할 수 있게 되는데, 예를 들어 열교환기의 용량을 줄일 경우에는 상기 유니트를 그대로 둔 상태에서 상기 배플(5)을 이용하여 가용한 냉매유로용 튜브(3)를 하부로부터 줄이게 되면, 상기 냉매의 흐름이 적어진 유니트를 통하여 흐르게 되어 상기 열교환기의 용량을 줄일수 있게 된다.According to the present invention configured as described above, a plurality of refrigerant flow path tubes 3 are connected to and installed on the header pipes 1 and 2 on both sides, and a plurality of heat dissipation fins 4 are disposed above and below the refrigerant flow path tubes 3. In the heat exchanger configured to partition the tube (3) by installing a baffle (5) in the header pipe (1) (2), the outer size of the refrigerant tube (3) all formed the same Inside the tube 3, a plurality of refrigerant passages 6 forming a hydraulic diameter part 6 are formed, and the refrigerant passages of the tube 3 toward the outlet gradually increase in the number of tubes and gradually decrease the cross-sectional area. The refrigerant flow tube 3 is partitioned by the baffle 5 at the same interval as the refrigerant passage tube 3 having the refrigerant flow path 6 formed therein is suppressed from being reduced. For each affected area For example, when the capacity of the heat exchanger is reduced, the refrigerant flow tube 3 is reduced from the lower side by using the baffle 5 while the unit is left as it is. Flow through the lesser unit can reduce the capacity of the heat exchanger.

또, 상기 냉매유로용 튜브(3)내에는 다수의 요철부(8)가 형성된 간막이(7)를 형성하여 상기 여러개의 냉매유로(6)가 형성되도록 구성할 수 있으며 상기 요철부(8)는 원형 또는 장방형으로 형성할 수도 있고, 돌기(9)형으로 형성하여 상기 냉매가 냉매유로를 따라 흐를 때 상기 간막이와 돌기 등에 의하여 접속되므로 상기 냉매의 의 열전달 계수 감소를 억제시킬 수 있도록 된 것이다.In addition, the refrigerant passage tube 3 may be configured to form a partition 7 having a plurality of uneven portions 8 formed therein so that the plurality of refrigerant passages 6 are formed. It may be formed in a circular or rectangular shape, and is formed in the shape of the projection 9 so that when the refrigerant flows along the refrigerant passage, it is connected by the interlayer and the projection, so that the heat transfer coefficient of the refrigerant may be reduced.

이상과 같은 본 발명은 상기와 같이 냉매유로용 튜브(3)를 여러단계로 구획하여 열교환기의 용량에 따라 일부를 폐쇄시키거나 전체를 사용하도록 하므로서 상기 열교환기 유니트의 부피를 변형시키지 않고도 열교환기의 용량을 조절할 수 있게 되며, 상기 냉매유로용 튜브(3)내에 여러개의 냉매유로(6)를 형성하면서 이 냉매유로(6)에 열전달 계수를 감소시킬 수 있도록 하는 형상이나 돌기 등을 형성하므로서 상기 열교환기의 효율을 보다 향상시킬 수 있게 되는 점 등의 특징을 지닌 것이다.As described above, the present invention divides the refrigerant flow tube 3 into several stages as described above so as to partially or completely use the heat exchanger without changing the volume of the heat exchanger unit, depending on the capacity of the heat exchanger. It is possible to adjust the capacity of the, while forming a plurality of refrigerant passages (6) in the refrigerant passage tube (3) by forming a shape or projection to reduce the heat transfer coefficient in the refrigerant passage (6) by It is characterized by being able to further improve the efficiency of the heat exchanger.

Claims (5)

양측의 헤더파이프(1)(2)상에 다수의 냉매유로용 튜브(3)를 연결설치하고 이 냉매유로용 튜브(3)의 상하에 다수의 방열핀(4)을 설치하며 상기 헤더파이프(1)(2)들에는 배플(5)를 설치하여 상기 튜브(3)를 구획하도록 구성된 열교환기에 있어서, 상기 냉매용 튜브(3)의 외형크기는 모두 동일하게 형성하고 상기 튜브(3)의 내부에는 수력직경부를 형성하는 여러개의 냉매유로(6)를 형성하며 상기 튜브(3)의 냉매유로들을 출구쪽으로 갈수록 점진적으로 튜브의 수를 동일하게 하면서 단면적을 작게 형성하여 냉매의 열전달 계수 감소를 억제시키고 상기 냉매유로(6)가 형성된 냉매유로용 튜브(3)를 동일간격으로 상기 배플(5)에 의하여 구획하도록 구성됨을 특징으로 하는 평행유동형 열교환기.A plurality of refrigerant passage tubes 3 are connected to and installed on both header pipes 1 and 2, and a plurality of heat dissipation fins 4 are installed above and below the refrigerant passage tube 3, and the header pipe 1 In the heat exchanger configured to partition the tube 3 by installing a baffle 5 in the 2), the external dimensions of the refrigerant tube 3 are all the same, and the inside of the tube 3 is Forming a plurality of refrigerant passages 6 forming a hydraulic diameter portion and gradually reducing the refrigerant passages of the tube 3 toward the outlet to form a smaller cross-sectional area while reducing the heat transfer coefficient of the refrigerant. A parallel flow type heat exchanger, characterized in that the refrigerant flow path (6) is formed to partition the refrigerant flow path tube (3) by the baffle (5) at equal intervals. 제1항에 있어서, 상기 냉매유로용 튜브(3)내에는 다수의 요철부(8)가 형성된 간막이(7)를 형성하여 상기 여러개의 냉매유로(6)가 형성되도록 구성됨을 특징으로 하는 평행유동형 열교환기.The parallel flow type according to claim 1, characterized in that a plurality of refrigerant passages (6) are formed by forming a partition (7) having a plurality of irregularities (8) formed in the refrigerant passage tube (3). heat transmitter. 제2항에 있어서, 상기 요철부는 원형으로 형성하여 상기 냉매의 열전달 계수 감소를 억제시킬 수 있도록 구성됨을 특징으로 하는 평행유동형 열교환기.The parallel flow type heat exchanger of claim 2, wherein the uneven portion is formed in a circular shape to suppress a decrease in the heat transfer coefficient of the refrigerant. 제2항에 있어서, 상기 요철부는 장방형으로 형성하여 상기 냉매의 열전달 계수 감소를 억제시킬 수 있도록 구성됨을 특징으로 하는 평행유동형 열교환기.The parallel flow heat exchanger of claim 2, wherein the uneven portion is formed in a rectangular shape to suppress a decrease in the heat transfer coefficient of the refrigerant. 제2항에 있어서, 상기 요철부는 돌기(9)형으로 형성하여 상기 냉매의 열전달 계수 감소를 억제시킬 수 있도록 구성됨을 특징으로 하는 평행유동형 열교환기.3. The parallel flow type heat exchanger according to claim 2, wherein the uneven portion is formed in a protrusion (9) shape so as to suppress a decrease in the heat transfer coefficient of the refrigerant.
KR1019990025832A 1999-06-30 1999-06-30 Heat exchanger of parallel flow type KR100294826B1 (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100430502B1 (en) * 2001-08-28 2004-05-10 위니아만도 주식회사 Tube of defogging heater device for vehicle

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KR101147577B1 (en) * 2011-05-26 2012-05-21 (주)에스티에스테크놀로지 Heating plate

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100430502B1 (en) * 2001-08-28 2004-05-10 위니아만도 주식회사 Tube of defogging heater device for vehicle

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