KR20020008626A - Double-tube hot water tank with heat exchange tube - Google Patents
Double-tube hot water tank with heat exchange tube Download PDFInfo
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- KR20020008626A KR20020008626A KR1020000042486A KR20000042486A KR20020008626A KR 20020008626 A KR20020008626 A KR 20020008626A KR 1020000042486 A KR1020000042486 A KR 1020000042486A KR 20000042486 A KR20000042486 A KR 20000042486A KR 20020008626 A KR20020008626 A KR 20020008626A
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- heat
- heat exchange
- exchange tube
- tube
- hot water
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H7/00—Storage heaters, i.e. heaters in which the energy is stored as heat in masses for subsequent release
- F24H7/02—Storage heaters, i.e. heaters in which the energy is stored as heat in masses for subsequent release the released heat being conveyed to a transfer fluid
- F24H7/0208—Storage heaters, i.e. heaters in which the energy is stored as heat in masses for subsequent release the released heat being conveyed to a transfer fluid using electrical energy supply
- F24H7/0233—Storage heaters, i.e. heaters in which the energy is stored as heat in masses for subsequent release the released heat being conveyed to a transfer fluid using electrical energy supply the transfer fluid being water
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H1/00—Water heaters, e.g. boilers, continuous-flow heaters or water-storage heaters
- F24H1/18—Water-storage heaters
- F24H1/181—Construction of the tank
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H1/00—Water heaters, e.g. boilers, continuous-flow heaters or water-storage heaters
- F24H1/22—Water heaters other than continuous-flow or water-storage heaters, e.g. water heaters for central heating
- F24H1/40—Water heaters other than continuous-flow or water-storage heaters, e.g. water heaters for central heating with water tube or tubes
- F24H1/43—Water heaters other than continuous-flow or water-storage heaters, e.g. water heaters for central heating with water tube or tubes helically or spirally coiled
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H4/00—Fluid heaters characterised by the use of heat pumps
- F24H4/02—Water heaters
- F24H4/04—Storage heaters
Abstract
Description
본 발명은 온수기의 온수탱크에 관한 것이며, 특히, 심야전기를 이용하여 온수를 축열식 히트펌프로 가열하여 데워 놓았다가 주간에 사용하는 축열식 히트펌프 온수기에 사용되는 2중 온수탱크에 관한 것이다.The present invention relates to a hot water tank of a water heater, and more particularly, to a double hot water tank used for a heat storage type heat pump water heater used during the day by heating and warming hot water with a heat storage type heat pump using a late night electric.
심야전기를 이용한 축열식 히트펌프 온수기는 사용인원에 맞는 용량을 선정하여(1인 평균 60L) 심야시간 10시간동안 온수를 데워 놓았다가 주간에 사용하는 온수기기로서, 단독, 연립주택, 빌라, 오피스텔, 여관, 모텔, 스포츠클럽, 학교, 기숙사, 병원, 연구실, 이ㆍ미용실, 커피숍, 중ㆍ소규모의 각종 업소 등 어디에서나 사용가능하다.The regenerative heat pump water heater using the midnight electricity is a water heater used for daytime after warming the hot water for 10 hours by selecting the capacity according to the number of people (average 60L per person). It can be used in inns, motels, sports clubs, schools, dormitories, hospitals, laboratories, beauty and beauty salons, coffee shops, and small and medium-sized businesses.
여기에서, 축열식이란 고온의 유체가 가진 열에너지를 저온유체로 보내는 열교환기의 한 형식으로서 축열기를 설치하여 열을 전달하는 방식이다.Here, the heat storage type is a type of heat exchanger that sends heat energy of a high temperature fluid to a low temperature fluid, and is a method of transferring heat by installing a heat storage device.
그리고, 히트펌프(heat pump)란 열을 온도가 낮은 곳에서 온도가 높은 곳으로 이동시킬 수 있는 장치로서, 이 히트펌프 사이클의 기본적인 구성요소는 저온부 열교환기인 증발기 및 압축기와, 고온부 열교환기인 응축기(일명, 응축열교환기) 및 팽창변로 구분된다. 즉, 히트펌프는 작동유체인 냉매를 증발, 압축, 응축 및 팽창시키는 것으로서, 그 과정을 간략하게 설명하면 다음과 같다.A heat pump is a device capable of moving heat from a low temperature to a high temperature, and the basic components of the heat pump cycle include an evaporator and a compressor, which are a low temperature heat exchanger, and a condenser, which is a high temperature heat exchanger. Also known as condensation heat exchanger) and expansion valve. That is, the heat pump is to evaporate, compress, condense, and expand the refrigerant as a working fluid, and the process will be described briefly as follows.
먼저, 저온저압의 습증기 상태의 냉매는 증발기에서 증발되면서 주변에서 증발잠열을 흡수하며 증발된 저온저압의 건조포화증기 상태의 냉매로 배출된다. 증발기에서 배출된 저온저압의 건조포화증기 상태의 냉매는 압축기에서 단열압축되어 고온고압의 과열증기 상태로 응축기로 유입된다. 응축기로 유입된 고온고압의 과열증기 상태의 냉매는 응축잠열을 방출시키며, 고온고압의 포화액체 상태의 냉매로 팽창변으로 유입된다. 즉, 히트펌프는 이와 같은 사이클을 반복적으로 수행하게된다.First, the low-temperature low-pressure wet steam refrigerant evaporates in the evaporator, absorbs latent heat of evaporation, and is discharged as the low-temperature low-pressure dry saturated vapor refrigerant. The refrigerant in the low temperature low pressure dry saturated vapor state discharged from the evaporator is adiabatic compressed in the compressor and flows into the condenser in the superheated state at high temperature and high pressure. The refrigerant in the high temperature and high pressure superheated steam introduced into the condenser releases latent heat of condensation and is introduced into the expansion valve as the refrigerant in a saturated liquid state at high temperature and high pressure. In other words, the heat pump repeatedly performs such a cycle.
앞서 설명한 바와 같은 방식으로 작동하는 축열식 히트펌프 온수기의 온수탱크에는 고온고압의 냉매로 온수를 가열시키는 응축열교환기가 설치된다.The hot water tank of the heat storage type heat pump water heater operating in the manner described above is provided with a condensation heat exchanger for heating hot water with a high temperature and high pressure refrigerant.
즉, 도 1에 도시된 바와 같이, 종래에는 온수탱크(10)의 외면에 내압에 강한 튜브형 열교환기(11)를 감아 간접 열교환 방식을 이용하였다. 이 때, 내압에 강한 튜브형 열교환기(11)를 사용하는 것은 압축기를 통과한 냉매가스의 높은 압력을 견딜 수 있도록 하기 위해서다.That is, as shown in Figure 1, in the past, a tubular heat exchanger (11) resistant to internal pressure was wound around the outer surface of the hot water tank (10) to use an indirect heat exchange method. At this time, the use of the tubular heat exchanger 11 resistant to the internal pressure is intended to withstand the high pressure of the refrigerant gas passing through the compressor.
그러나, 도 1에 도시된 형태의 간접 열교환 방식은 튜브형 열교환기(11)의 열을 온수탱크(10)의 외면에 선접촉 방식으로 전달하는 것으로서, 선접촉에 의해 열전달 면적이 작아 열전달 효과가 크게 떨어지는 단점이 있다.However, the indirect heat exchange method of the type shown in FIG. 1 transfers the heat of the tubular heat exchanger 11 to the outer surface of the hot water tank 10 in a line contact manner, and the heat transfer area is small due to the line contact, thereby greatly increasing the heat transfer effect. There is a downside to falling.
또한, 도 2에 도시된 바와 같이, 종래에는 온수탱크(20)를 2중 원통관으로 구성하고, 외통을 열교환기(21)로 사용하도록 구성하였다. 그러나, 외통을 열교환기(21)로 사용할 경우에는, 외통이 내압에 약하고, 열매체로 사용되는 프레온류 가스의 상변화에 따른 내부압력의 증가로 수축/팽창에 취약한 특성을 나타내기 때문에 사용하기가 곤란하다는 단점이 있다.In addition, as shown in Fig. 2, the hot water tank 20 is conventionally configured as a double cylinder tube, and configured to use the outer cylinder as the heat exchanger 21. However, when the outer cylinder is used as the heat exchanger 21, the outer cylinder is weak to the internal pressure, and the inner cylinder is vulnerable to shrinkage / expansion due to the increase in the internal pressure caused by the phase change of the freon gas used as the heat medium. The disadvantage is that it is difficult.
따라서, 본 발명은 앞서 설명한 바와 같은 종래 기술의 문제점을 해결하기 위하여 안출된 것으로서, 2중 원통관의 환형공간내에 열교환 튜브를 설치하고 열교환매체를 충진함으로써, 열전달 면적을 증대시켜 열전달 효과를 극대화하는 축열식 히트펌프 온수기에 사용되는 열교환 튜브가 내장된 2중 온수탱크를 제공하는 데 그목적이 있다.Therefore, the present invention has been made to solve the problems of the prior art as described above, by installing a heat exchange tube in the annular space of the double cylinder tube and filling the heat exchange medium, to increase the heat transfer area to maximize the heat transfer effect Its purpose is to provide a double hot water tank with a built-in heat exchange tube for a regenerative heat pump water heater.
도 1 및 도 2는 종래기술에 따른 축열식 히트펌프 온수기에 사용되는 온수탱크와 열교환기의 배치관계를 설명하기 위한 단면도이고,1 and 2 are cross-sectional views for explaining the layout relationship between the hot water tank and the heat exchanger used in the heat storage type heat pump water heater according to the prior art,
도 3은 본 발명의 한 실시예에 따른 축열식 히트펌프 온수기에 사용되는 열교환 튜브가 내장된 2중 온수탱크의 사시도이며,3 is a perspective view of a double hot water tank with a built-in heat exchange tube used for a heat storage heat pump water heater according to an embodiment of the present invention,
도 4는 도 3에 도시된 열교환 튜브가 내장된 2중 온수탱크의 단면도.Figure 4 is a cross-sectional view of the double hot water tank built in the heat exchange tube shown in FIG.
♠ 도면의 주요부분에 대한 부호의 설명 ♠♠ Explanation of symbols on the main parts of the drawing ♠
30 : 온수탱크 31 : 내통30: hot water tank 31: inner cylinder
32 : 외통 33 : 유입구32: outer cylinder 33: inlet
34 : 배출구 35 : 환형공간34: outlet 35: annular space
36 : 열교환 튜브 37 : 하부 밀폐공간36: heat exchange tube 37: lower sealed space
38 : 열교환 매체 39 : 상부 밀폐공간38: heat exchange medium 39: upper closed space
앞서 설명한 바와 같은 목적을 달성하기 위한 본 발명의 열교환 튜브가 내장된 2중 온수탱크는, 내통과 외통으로 구분되는 2중 원통관으로 구성되어 있고, 상기 내통과 외통의 사이에 형성되는 환형공간내에는 열교환 튜브가 위치하고 열교환 매체가 채워져 있으며, 상기 열교환 매체는 상기 열교환 튜브가 내통의 외면에 선접촉함에 따른 큰 접촉열저항을 줄이고 상기 열교환 튜브의 열을 내통에 채워져 있는 물에 전달하는 열전달 면적을 증대시키는 것을 특징으로 한다.The double hot water tank in which the heat exchange tube of the present invention is incorporated to achieve the object as described above is composed of a double cylindrical tube divided into an inner cylinder and an outer cylinder, and is formed in an annular space formed between the inner cylinder and the outer cylinder. The heat exchange tube is located and the heat exchange medium is filled, and the heat exchange medium reduces the large contact heat resistance due to the line contact with the outer surface of the inner cylinder and transfers the heat transfer area for transferring the heat of the heat exchange tube to the water filled in the inner cylinder. It is characterized by increasing.
아래에서, 본 발명에 따른 축열식 히트펌프 온수기에 사용되는 열교환 튜브가 내장된 2중 온수탱크에 대한 양호한 실시예를 첨부한 도면을 참조로 하여 상세히 설명하겠다.In the following, with reference to the accompanying drawings, a preferred embodiment of a double hot water tank with a built-in heat exchange tube used in the heat storage heat pump water heater according to the present invention will be described in detail.
도면에서, 도 3은 본 발명의 한 실시예에 따른 축열식 히트펌프 온수기에 사용되는 열교환 튜브가 내장된 2중 온수탱크의 사시도이고, 도 4는 도 3에 도시된 열교환 튜브가 내장된 2중 온수탱크의 단면도이다.3 is a perspective view of a double hot water tank with a built-in heat exchange tube used in a heat storage heat pump water heater according to an embodiment of the present invention, and FIG. 4 is double hot water with a built-in heat exchange tube shown in FIG. 3. It is a cross section of the tank.
도 3 및 도 4에 보이듯이, 본 발명의 2중 온수탱크는 2중 원통관으로서 내통(31)과 외통(32)으로 구분되고, 내통(31)과 외통(32)의 상부 및 하부는 밀봉되어 있다. 이런 내통(31)에는 가열될 물이 채워져 있는 데, 내통(31)의 상부 및 하부에는 물이 유입되고 배출되는 유입구(33)와 배출구(34)가 각각 형성되어 있다.As shown in Figures 3 and 4, the double hot water tank of the present invention is a double cylindrical tube divided into an inner cylinder 31 and an outer cylinder 32, the upper and lower portions of the inner cylinder 31 and the outer cylinder 32 are sealed. It is. The inner cylinder 31 is filled with water to be heated, and the inlet 33 and the outlet 34 through which water is introduced and discharged are formed in the upper and lower portions of the inner cylinder 31, respectively.
그리고, 내통(31)과 외통(32)의 사이에는 환형공간(35)이 형성되는 데, 이 환형공간(35)내에는 나선관 형태로 열교환 튜브(36)가 위치하게 된다. 즉, 열교환튜브(36)는 내통(31)의 외면을 따라 일정한 간격을 두고 감겨 있다. 이 때, 열교환 튜브(36)는 내통(31)의 하부로부터 길이방향 약 2/3지점까지 감겨 있다. 이렇게 위치하는 열교환 튜브(36)는 압축기를 통과한 냉매가스의 높은 압력(약 20㎏/㎠)을 견딜 수 있도록 내압에 강한 튜브로 형성된다. 이렇게 환형공간(35)내에 열교환 튜브(36)를 설치함으로써, 즉 외통(32)에 의해 열교환 튜브(36)의 열이 직접 외부로 방출되는 것을 차단할 수 있어 내통(31)에 가해되는 열을 효과적으로 관리할 수 있다.An annular space 35 is formed between the inner cylinder 31 and the outer cylinder 32, and the heat exchange tube 36 is positioned in the spiral space 35 in the form of a spiral tube. That is, the heat exchange tube 36 is wound at regular intervals along the outer surface of the inner cylinder 31. At this time, the heat exchange tube 36 is wound from the lower part of the inner cylinder 31 to about 2/3 of the longitudinal direction. The heat exchange tube 36 positioned as described above is formed of a tube resistant to internal pressure to withstand the high pressure (about 20 kg / cm 2) of the refrigerant gas passing through the compressor. By providing the heat exchange tube 36 in the annular space 35, that is, it is possible to block the heat of the heat exchange tube 36 from being directly discharged to the outside by the outer cylinder 32, thereby effectively preventing the heat applied to the inner cylinder 31. Can manage
이렇게 열교환 튜브(36)가 위치하는 부위의 바로 위부분은 밀폐되어 있다. 즉, 환형공간(35)내에는 2개의 밀폐공간이 형성된다. 이런 밀폐공간 중 열교환 튜브(36)가 위치하는 하부 밀폐공간(37)에는 열교환 매체(38)가 채워져 있고, 상부 밀폐공간(39)에는 아무것도 채워져 있지 않다. 이 때, 열교환 매체(38)로는 물이나 기타 열매체가 사용된다. 이렇게 열교환 튜브(36)와 열교환 매체(38)가 채워져 있는 하부 밀폐공간(37)은 일종의 간접 온수 축열조로도 활용된다.The portion immediately above the portion where the heat exchange tube 36 is located is sealed. That is, two closed spaces are formed in the annular space 35. The heat exchange medium 38 is filled in the lower sealed space 37 in which the heat exchange tube 36 is located in the sealed space, and nothing is filled in the upper sealed space 39. At this time, water or other heat medium is used as the heat exchange medium 38. The lower sealed space 37 filled with the heat exchange tube 36 and the heat exchange medium 38 is also used as a kind of indirect hot water storage tank.
이렇게 열교환 매체(38)를 충진하는 것은 열교환 튜브(36)가 내통(31)의 외면에 선접촉함에 따른 큰 접촉열 저항을 줄일뿐만 아니라, 열교환 튜브(36)의 열을 내통(31)에 채워져 있는 물에 전달하는 열전달 면적을 증대시키기 위해서다.This filling of the heat exchange medium 38 not only reduces the large contact heat resistance caused by the heat exchange tube 36 to linear contact with the outer surface of the inner cylinder 31, but also fills the inner cylinder 31 with heat from the heat exchange tube 36. To increase the heat transfer area to the water present.
아래에서는, 앞서 설명한 바와 같이 구성된 열교환 튜브가 내장된 2중 온수탱크의 작동관계에 대해 상세히 설명하겠다.In the following, it will be described in detail the operation relationship of the built-in heat exchanger tube double hot water tank as described above.
도 3 및 도 4에 보이듯이, 압축기에서 단열압축되어 고온고압의 과열증기 상태로 열교환 튜브(36)로 유입된 냉매는 응축잠열을 방출한다. 그러면, 열교환 튜브(36)와 내통(31) 외면의 온도차에 의해 열교환 튜브(36)와 열교환 매체(38)의 사이에서 자연대류에 의한 열전달이 일어난다. 즉, 열교환 튜브(36)로부터 열을 전달받은 열교환 매체(38)가 내통(31)의 외면에 열을 전달하여 내통(31)에 저장된 물을 가열하게 된다. 그러면, 내통(31)에 채워져 있는 물은 자연대류에 의해 열전달이 이루어진다. 이런 과정을 통해 내통(31)에 저장된 물이 데워진다.As shown in FIGS. 3 and 4, the refrigerant introduced into the heat exchange tube 36 by adiabatic compression in the compressor and being in a superheated steam at high temperature and high pressure releases latent heat of condensation. Then, heat transfer by natural convection occurs between the heat exchange tube 36 and the heat exchange medium 38 due to the temperature difference between the heat exchange tube 36 and the inner surface of the inner cylinder 31. That is, the heat exchange medium 38 which receives heat from the heat exchange tube 36 transfers heat to the outer surface of the inner cylinder 31 to heat the water stored in the inner cylinder 31. Then, the water filled in the inner cylinder 31 is heat transfer by natural convection. Through this process, the water stored in the inner barrel 31 is heated.
앞서 상세히 설명한 바와 같이 본 발명의 축열식 히트펌프 온수기에 사용되는 열교환 튜브가 내장된 2중 온수탱크는 2중 원통관의 환형공간내에 열교환 튜브를 설치하고 열교환 매체를 충진함으로써, 열전달 면적을 증대시켜 열절달 효과를 극대화하는 효과가 있다.As described in detail above, the double hot water tank in which the heat exchange tube used for the heat storage type heat pump water heater of the present invention is built-in is installed by installing a heat exchange tube in the annular space of the double cylinder tube and filling the heat exchange medium, thereby increasing the heat transfer area. Maximizes the effect of the moon.
이상에서 본 발명의 축열식 히트펌프 온수기에 사용되는 열교환 튜브가 내장된 2중 온수탱크에 대한 기술사상을 첨부도면과 함께 서술하였지만 이는 본 고안의 가장 양호한 실시예를 예시적으로 설명한 것이지 본 발명을 한정하는 것은 아니다.The technical idea of the double hot water tank with a heat exchange tube for use in a heat storage heat pump water heater of the present invention has been described above with the accompanying drawings, but this is illustrative of the best embodiment of the present invention and the present invention is limited. It is not.
또한, 이 기술분야의 통상의 지식을 가진 자이면 누구나 본 발명의 기술사상의 범주를 이탈하지 않는 범위내에서 다양한 변형 및 모방이 가능함은 명백한 사실이다.In addition, it is obvious that any person skilled in the art can make various modifications and imitations without departing from the scope of the technical idea of the present invention.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20160093290A (en) * | 2015-01-29 | 2016-08-08 | (주)케이에프 | Bio-char generating system of organic waste |
| CN105841404A (en) * | 2016-05-18 | 2016-08-10 | 珠海格力电器股份有限公司 | Heat exchange device, liquid storage tank with heat exchange device and water heater with heat exchange device |
| CN114543357A (en) * | 2022-02-09 | 2022-05-27 | 安徽省宁国市天成电机有限公司 | Novel heater |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101183490B1 (en) | 2012-04-04 | 2012-09-20 | 명순식 | Heat exchange structure and dishwasher using the same |
| CN204593857U (en) * | 2015-03-21 | 2015-08-26 | 广东澳德绅电器科技有限公司 | A kind of Teat pump boiler with air pressure adjustment |
| KR101847464B1 (en) | 2016-07-08 | 2018-04-11 | 김명원 | Water heater assembly |
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| JPS51159959U (en) * | 1975-06-13 | 1976-12-20 | ||
| JPS5812043Y2 (en) * | 1978-09-11 | 1983-03-07 | ゼンシン株式会社 | Heat exchanger |
| JPS5897461U (en) * | 1981-12-23 | 1983-07-02 | 株式会社 ト−タルシステム | Heat exchanger with tank and bow tube |
| JPH01142389A (en) * | 1987-11-30 | 1989-06-05 | Hitachi Reinetsu Kk | Heat exchanger for high-purity fluid |
| JPH04260788A (en) * | 1991-02-15 | 1992-09-16 | Miura Kenkyusho:Kk | Double cylinder inner coil type heat exchanger |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20160093290A (en) * | 2015-01-29 | 2016-08-08 | (주)케이에프 | Bio-char generating system of organic waste |
| CN105841404A (en) * | 2016-05-18 | 2016-08-10 | 珠海格力电器股份有限公司 | Heat exchange device, liquid storage tank with heat exchange device and water heater with heat exchange device |
| CN114543357A (en) * | 2022-02-09 | 2022-05-27 | 安徽省宁国市天成电机有限公司 | Novel heater |
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