TWI440805B - A variable pipe heat exchanger - Google Patents
A variable pipe heat exchanger Download PDFInfo
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- TWI440805B TWI440805B TW100147131A TW100147131A TWI440805B TW I440805 B TWI440805 B TW I440805B TW 100147131 A TW100147131 A TW 100147131A TW 100147131 A TW100147131 A TW 100147131A TW I440805 B TWI440805 B TW I440805B
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- conduit
- tube
- heat exchanger
- refrigerant
- diameter
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Classifications
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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
- F28D7/00—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
- F28D7/16—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being arranged in parallel spaced relation
- F28D7/163—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being arranged in parallel spaced relation with conduit assemblies having a particular shape, e.g. square or annular; with assemblies of conduits having different geometrical features; with multiple groups of conduits connected in series or parallel and arranged inside common casing
-
- 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
- F28F1/006—Tubular elements; Assemblies of tubular elements with variable shape, e.g. with modified tube ends, with different geometrical features
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- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Geometry (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Description
本發明涉及一種熱水器,特別是涉及一種熱水器中的換熱器。 The invention relates to a water heater, in particular to a heat exchanger in a water heater.
作為空氣調節溫度的設備稱為空調機。這些空調機的性能都是為該機組而制定,空調熱水機(又稱熱泵熱水機)則將製冷、採暖、制熱水一機共融,並要做到不損害現有空調的表現時,又能發揮良好的制熱水效果及安全和可靠性能。然而,現在市場上的空調熱水機冷媒熱水機存在以下問題: The device that regulates the temperature of the air is called an air conditioner. The performance of these air conditioners is formulated for the unit. The air conditioner hot water machine (also known as the heat pump water heater) integrates the refrigeration, heating and hot water, and does not damage the performance of the existing air conditioner. , can also play a good hot water effect and safety and reliability. However, the air conditioner hot water machine refrigerant hot water machine on the market now has the following problems:
因為一般空調熱水器功率小,做不到一次加熱,即15℃入水而60℃出水。因此,大都採用迴圈式熱泵,但迴圈式熱泵存在一定的問題:如隨著溫度的上升,機組的冷凝溫度、排氣溫度、排氣壓力和運行電流都會隨之上升,當水溫升到45℃以上時,水和工質的溫差變小,吸熱能力變差,導致換熱效率大大降低。事實上,中溫迴圈式熱泵熱水機由於混水問題,長時間處於中高溫迴圈狀態,導致壓縮機長時間超負荷運行,使得效率低,耗能大,甚至縮短壓縮機的使用壽命。 Because the general air-conditioning water heater has a small power, it can't be heated once, that is, 15 ° C into the water and 60 ° C out of the water. Therefore, most of them use the loop type heat pump, but the loop type heat pump has certain problems: if the temperature rises, the unit's condensing temperature, exhaust temperature, exhaust pressure and operating current will rise, when the water temperature rises. When the temperature is above 45 °C, the temperature difference between water and working fluid becomes smaller, and the heat absorption capacity becomes worse, resulting in a greatly reduced heat exchange efficiency. In fact, due to the problem of water mixing, the medium-temperature loop-type heat pump water heater has been in a medium-high temperature loop for a long time, resulting in a long-time overload operation of the compressor, resulting in low efficiency, high energy consumption, and even shortened the service life of the compressor.
為了克服現有技術的不足,本發明提供一種效率高、耗能小、的變徑管路換熱器。 In order to overcome the deficiencies of the prior art, the present invention provides a variable diameter pipeline heat exchanger with high efficiency and low energy consumption.
本發明解決其技術問題所採用的技術方案是: The technical solution adopted by the present invention to solve the technical problem thereof is:
一種變徑管路換熱器,包括一換熱管及一設置於該換熱管內的冷媒,該換熱管包括一外管及一設置於該外管內的內管,該內管包括一第一導管及一與該第一導管相通的第二導管,且該第一導管的內徑小於該第二導管的內徑,該冷媒由該 第一導管流向該第二導管,其特徵在於:該外管分別與該第一導管以及該第二導管形成一第一流動空間與一第二流動空間,該第一流動空間大於該第二流動空間。 A variable-diameter pipeline heat exchanger includes a heat exchange tube and a refrigerant disposed in the heat exchange tube, the heat exchange tube including an outer tube and an inner tube disposed in the outer tube, the inner tube including a first tube a conduit and a second conduit communicating with the first conduit, and an inner diameter of the first conduit is smaller than an inner diameter of the second conduit, the refrigerant being The first conduit flows to the second conduit, wherein the outer tube forms a first flow space and a second flow space with the first conduit and the second conduit, respectively, the first flow space being larger than the second flow space.
該第一導管及該第二導管的連接處設有一過渡管。 A transition tube is disposed at the junction of the first conduit and the second conduit.
該內管上設有一中管,且該中管的一內壁與該內管的一外壁緊密接觸。 The inner tube is provided with a middle tube, and an inner wall of the middle tube is in close contact with an outer wall of the inner tube.
該外管及該中管間設有至少一花瓣片,該花瓣片上設有一過流孔。 At least one petal piece is disposed between the outer tube and the middle tube, and the flower piece is provided with an overflow hole.
該第一導管的該冷媒入口端設有一緩衝增壓裝置,且該第一導管的該冷媒入口端與該緩衝增壓裝置的該冷媒輸出端相連。 The refrigerant inlet end of the first conduit is provided with a buffer boosting device, and the refrigerant inlet end of the first conduit is connected to the refrigerant output end of the buffer boosting device.
本發明的有益效果是:本發明的內管包括第一導管及與第一導管相通的第二導管,且第一導管的內徑小於第二導管的內徑,當冷媒為高溫高壓氣體在第一導管內流動時,因第一導管管徑較小,從而流速快,獲得更大的雷諮史諾數,而在第二導管內流動時,因熱量已大部分傳導出去,因而有較多的液體存在,而且第二導管管徑較大,讓產生的液體能夠加快流走,從而避免了換熱器大部分面積處於低效冷凝狀態;本發明的外管及中管間設置了花瓣片,該花瓣片上設有過流孔,因而增加了水的擾動,加強了換熱效果;第一導管的冷媒入口端與增壓裝置的冷媒輸出端相連,通過增壓裝置的加壓,可以使冷媒分流更均勻。 The beneficial effect of the present invention is that the inner tube of the present invention comprises a first conduit and a second conduit communicating with the first conduit, and the inner diameter of the first conduit is smaller than the inner diameter of the second conduit, when the refrigerant is high temperature and high pressure gas When flowing in a conduit, the diameter of the first conduit is small, so that the flow velocity is fast, and a larger number of Lei Sisno is obtained, and when flowing in the second conduit, the heat is mostly conducted out, so that there is more The liquid is present, and the second conduit has a large diameter, so that the generated liquid can accelerate the flow away, thereby avoiding the majority of the area of the heat exchanger being in an inefficient condensation state; the petal piece is disposed between the outer tube and the middle tube of the present invention. The petal piece is provided with a flow hole, thereby increasing water disturbance and enhancing the heat exchange effect; the refrigerant inlet end of the first pipe is connected to the refrigerant output end of the supercharging device, and the pressurization device can pressurize The refrigerant split is more uniform.
通過上述結構的改進,本發明在功率較小的情況下也能做到一次加熱,在溫度、壓力和流量相同的情況下,當冷媒進入換熱器時,製作相同熱量所需的管長為一般換熱器的二分之一,不僅節省材料成本,還可減小換熱器尺寸。 Through the improvement of the above structure, the invention can also perform one heating in the case of low power. When the temperature, pressure and flow rate are the same, when the refrigerant enters the heat exchanger, the length of the pipe required for the same heat is generally One-half of the heat exchanger not only saves material costs, but also reduces heat exchanger size.
參照圖1至圖3,本發明公開了一種變徑管路換熱器,包括一換熱管9及一設置於該換熱管9內的冷媒,該換熱管9包括一外管1及一設置於該外管1內的內管,該內管包括一第一導管2及一與該第一導管2相通的第二導管3,且該第一導管2的內徑小於該第二導管3的內徑,該冷媒由該第一導管2流向該第二導管3。其中,該外管1分別與該第一導管2以及該第二導管3形成一第一流動空間與一第二流動空間。該第一流動空間的容量大小為該外管1減去該第一導管2的容量大小,而該第二流動空間的容量大小為該外管1減去該第二導管3的容量大小。其中,該第一流動空間大於該第二流動空間。 Referring to FIG. 1 to FIG. 3, the present invention discloses a variable diameter pipeline heat exchanger comprising a heat exchange tube 9 and a refrigerant disposed in the heat exchange tube 9, the heat exchange tube 9 including an outer tube 1 and a An inner tube in the outer tube 1 , the inner tube includes a first tube 2 and a second tube 3 communicating with the first tube 2 , and the inner diameter of the first tube 2 is smaller than the inside of the second tube 3 The refrigerant flows from the first conduit 2 to the second conduit 3. The outer tube 1 forms a first flow space and a second flow space with the first duct 2 and the second duct 3, respectively. The capacity of the first flow space is the size of the outer tube 1 minus the capacity of the first duct 2, and the capacity of the second flow space is the outer tube 1 minus the capacity of the second duct 3. Wherein the first flow space is larger than the second flow space.
於本具體實施例中,該第一導管2及該第二導管3的連接處設有一過渡管4,通過該過渡管4能夠減小變徑時管壁對該冷媒流動的形成的阻力及因此而產生的擾流。該內管上設有一中管5,且該中管5的一內壁與該內管的一外壁緊密接觸,該冷媒在雙壁管道內流動可針對該冷媒洩露時提供保護。該外管1及該中管5間設有至少一花瓣片8,該花瓣片8上設有一過流孔7,因而增加了水的擾動,加強了換熱效果。 In the present embodiment, a connection duct 4 is provided at the junction of the first duct 2 and the second duct 3, and the transition duct 4 can reduce the resistance of the duct wall to the formation of the refrigerant flow during the variable diameter and thus And the resulting spoiler. The inner tube is provided with a middle tube 5, and an inner wall of the middle tube 5 is in close contact with an outer wall of the inner tube, and the refrigerant flows in the double-walled tube to provide protection against leakage of the refrigerant. At least one petal piece 8 is disposed between the outer tube 1 and the middle tube 5, and the flower piece 8 is provided with an overflow hole 7, thereby increasing water disturbance and enhancing the heat exchange effect.
該第一導管2的該冷媒入口端設有一緩衝增壓裝置6,且該第一導管2的該冷媒入口端與該緩衝增壓裝置6的該冷媒輸出端相連,該緩衝增壓裝置6可以使該冷媒分流更均勻,並增大該冷媒入獨立變徑微管路換熱器時的壓力,提高換熱係數。 The refrigerant inlet end of the first conduit 2 is provided with a buffer boosting device 6, and the refrigerant inlet end of the first conduit 2 is connected to the refrigerant output end of the buffer boosting device 6, and the buffer boosting device 6 can The refrigerant is split more uniformly, and the pressure of the refrigerant into the independent variable diameter micro-tube heat exchanger is increased to increase the heat transfer coefficient.
本發明的工作原理如下:由於獨立變徑微管路換熱器的套管直徑微細,相同流量下,冷媒和水的流速增大,可以獲得較大的雷諾數,加上液態冷媒厚度減薄導致滯流層厚度大大減小,因此換熱係數能大大提高,使得傳熱速度更快。在冷媒通道末端加大管徑,有助使冷凝液儘快流出。冷媒在換熱器凝結換熱,從進口的過熱或飽和高溫高壓氣體一直冷凝至管內出口 飽和或過冷液體。冷凝液的存在阻礙了高溫高壓氣體和管壁面接觸,成為凝結換熱的主要熱阻。由於越近末端,冷凝液體的比例越多,加大冷凝管道的直徑可以減少流動阻力,令冷凝液體加快流出。由於流體具有粘性,所以流動時產生內摩擦力,形成流動阻力,根據范寧公式及牛頓粘性定律可以推知層流時,壓強降值與冷媒通道圓管管徑平方成反比。 The working principle of the invention is as follows: since the diameter of the casing of the independent variable diameter micro-tube heat exchanger is fine, the flow rate of the refrigerant and water is increased under the same flow rate, and a large Reynolds number can be obtained, and the thickness of the liquid refrigerant is reduced. As a result, the thickness of the stagnant layer is greatly reduced, so the heat transfer coefficient can be greatly improved, so that the heat transfer rate is faster. Increasing the diameter of the tube at the end of the refrigerant channel helps to allow the condensate to flow out as quickly as possible. The refrigerant condenses heat in the heat exchanger, and condenses from the imported superheated or saturated high-temperature and high-pressure gas to the outlet inside the tube. Saturated or subcooled liquid. The presence of the condensate hinders the contact of the high temperature and high pressure gas with the wall surface of the tube and becomes the main thermal resistance of the condensation heat transfer. Due to the closer the end, the more the proportion of condensed liquid, the larger the diameter of the condensing duct can reduce the flow resistance, and the condensed liquid is accelerated to flow out. Since the fluid is viscous, internal friction is generated during flow, and flow resistance is formed. According to Fanning's formula and Newton's law of viscosity, when the laminar flow is inferred, the pressure drop is inversely proportional to the square of the diameter of the refrigerant channel.
在完全湍流時,流動阻力只與速度的平方成正比.加大管徑,冷凝液的流速減慢,無論在層流或是湍流,流動阻力或是壓強降值都會減小,因此流量的減慢會顯著降低。這種分段擴寬,增大流量,減低壓降的設計使當冷媒為高溫高壓氣體主導階段時有較長的換熱時間,在較多冷凝液體產生時加快流走,避免換熱器大部分面積處於低效冷凝過程。而且外管及中管間設有花瓣片,該花瓣片上設有過流孔,花瓣片及過流孔能夠增加水的擾動,通過擾動而加強換熱效果。 In the case of complete turbulence, the flow resistance is only proportional to the square of the velocity. The pipe diameter is increased and the flow rate of the condensate is slowed down. The flow resistance or pressure drop is reduced in laminar or turbulent flow, so the flow rate is reduced. Slow will be significantly reduced. This kind of segmentation widening, increasing the flow rate, and reducing the low pressure drop design makes the heat exchange time longer when the refrigerant is in the high temperature and high pressure gas dominant stage, and accelerates the flow away when more condensed liquid is generated, avoiding the heat exchanger being large. Part of the area is in an inefficient condensation process. Moreover, a petal piece is arranged between the outer tube and the middle tube, and the flower piece is provided with a flow hole, the petal piece and the overflow hole can increase the disturbance of the water, and the heat exchange effect is enhanced by the disturbance.
通過使用改進後的換熱器,即使是小功率冷媒熱水機,也能做到一次加熱。在冷媒進入換熱器時,當溫度,壓力和流量相同的情況下,製作相同熱量所需的管長為一般換熱器的二分之一。這不僅節省材料成本,還可減小換熱器尺寸。 By using the improved heat exchanger, even a small power refrigerant hot water machine can achieve one heating. When the refrigerant enters the heat exchanger, when the temperature, pressure and flow rate are the same, the pipe length required to make the same heat is one-half of that of the general heat exchanger. This not only saves material costs but also reduces heat exchanger size.
外管 Outer tube
2‧‧‧第一導管 2‧‧‧First catheter
3‧‧‧第二導管 3‧‧‧Second catheter
4‧‧‧過渡管 4‧‧‧Transition tube
5‧‧‧中管 5‧‧‧中管
6‧‧‧緩衝增壓裝置 6‧‧‧buffer booster
7‧‧‧過流孔 7‧‧‧Overcurrent
8‧‧‧花瓣片 8‧‧‧petal tablets
9‧‧‧換熱管 9‧‧‧ heat exchange tube
下面結合附圖和實施例對本發明進一步說明。 The invention will now be further described with reference to the drawings and embodiments.
圖1是本發明的剖面圖;圖2是圖1的A-A剖面視圖;圖3是本發明的整體視圖。 1 is a cross-sectional view of the present invention; FIG. 2 is a cross-sectional view taken along line A-A of FIG. 1; and FIG. 3 is an overall view of the present invention.
1‧‧‧外管 1‧‧‧External management
2‧‧‧第一導管 2‧‧‧First catheter
3‧‧‧第二導管 3‧‧‧Second catheter
4‧‧‧過渡管 4‧‧‧Transition tube
5‧‧‧中管 5‧‧‧中管
7‧‧‧過流孔 7‧‧‧Overcurrent
8‧‧‧花瓣片 8‧‧‧petal tablets
Claims (5)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
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CN2011102672476A CN102313466B (en) | 2011-09-09 | 2011-09-09 | Heat exchanger with reducer pipeline |
Publications (2)
Publication Number | Publication Date |
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TW201312063A TW201312063A (en) | 2013-03-16 |
TWI440805B true TWI440805B (en) | 2014-06-11 |
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Application Number | Title | Priority Date | Filing Date |
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TW100147131A TWI440805B (en) | 2011-09-09 | 2011-12-19 | A variable pipe heat exchanger |
Country Status (3)
Country | Link |
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CN (1) | CN102313466B (en) |
TW (1) | TWI440805B (en) |
WO (1) | WO2013033938A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
TWI617784B (en) * | 2015-08-11 | 2018-03-11 | Two-phase flow heat exchange device |
Families Citing this family (7)
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CN102870836A (en) * | 2012-09-29 | 2013-01-16 | 新麦机械(无锡)有限公司 | Air heater in food baking oven |
CN106288535A (en) * | 2016-07-29 | 2017-01-04 | 合肥美的电冰箱有限公司 | The condenser of refrigerator and refrigerator |
CN106322856A (en) * | 2016-10-31 | 2017-01-11 | 合肥美的电冰箱有限公司 | Condenser for refrigerator and refrigerator with same |
CN106764128B (en) * | 2016-12-13 | 2019-03-26 | 大连圣洁真空技术开发有限公司开发区分公司 | A kind of gas liquid two purpose spiral temperature control flow tube |
CN107270745B (en) * | 2017-08-02 | 2023-11-03 | 孙琦 | Gas double-vortex heat exchange device |
CN107388638B (en) * | 2017-08-24 | 2023-07-21 | 天津商业大学 | Whole inflation two side reducing pipe cross flow heat exchanger |
CN115218554A (en) * | 2022-07-27 | 2022-10-21 | 安徽省三荣科技有限公司 | Air energy thermoelectric heat pump pipe |
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DE3761857D1 (en) * | 1986-08-11 | 1990-04-12 | Siemens Ag | GAS COOLER. |
JP2896609B2 (en) * | 1991-02-14 | 1999-05-31 | 昭和アルミニウム株式会社 | Manufacturing method of cylindrical heat exchanger |
CN2901185Y (en) * | 2006-05-30 | 2007-05-16 | 浙江盾安人工环境设备股份有限公司 | Variable diameter type sleeve evaporator |
CN201184761Y (en) * | 2008-02-20 | 2009-01-21 | 上海理工大学 | Concentric casing heat exchanger |
CN101995092A (en) * | 2009-08-21 | 2011-03-30 | 全联有限公司 | Method and device for simultaneously supplying hot water and warm air |
CN101975521A (en) * | 2010-11-07 | 2011-02-16 | 上海交通大学 | Straight pipe dividing wall type heat exchanger |
CN201954999U (en) * | 2011-03-04 | 2011-08-31 | 杭州杭氧换热设备有限公司 | Straight and high-efficiency inner fins heat exchange tube with holes |
CN202274781U (en) * | 2011-09-09 | 2012-06-13 | 珠海亚必利科技有限公司 | Variable diameter pipeline heat exchanger |
-
2011
- 2011-09-09 CN CN2011102672476A patent/CN102313466B/en not_active Expired - Fee Related
- 2011-09-30 WO PCT/CN2011/080395 patent/WO2013033938A1/en active Application Filing
- 2011-12-19 TW TW100147131A patent/TWI440805B/en not_active IP Right Cessation
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
TWI617784B (en) * | 2015-08-11 | 2018-03-11 | Two-phase flow heat exchange device |
Also Published As
Publication number | Publication date |
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WO2013033938A1 (en) | 2013-03-14 |
TW201312063A (en) | 2013-03-16 |
CN102313466B (en) | 2013-11-27 |
CN102313466A (en) | 2012-01-11 |
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