WO2019090792A1 - 一种蒸气发生器用提升管及吸收式制冷装置 - Google Patents

一种蒸气发生器用提升管及吸收式制冷装置 Download PDF

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Publication number
WO2019090792A1
WO2019090792A1 PCT/CN2017/110833 CN2017110833W WO2019090792A1 WO 2019090792 A1 WO2019090792 A1 WO 2019090792A1 CN 2017110833 W CN2017110833 W CN 2017110833W WO 2019090792 A1 WO2019090792 A1 WO 2019090792A1
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Prior art keywords
riser
pipe
section
tube
throttle
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PCT/CN2017/110833
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English (en)
French (fr)
Inventor
孙宇彤
秦国军
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苏州市泰美达电器有限公司
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Publication of WO2019090792A1 publication Critical patent/WO2019090792A1/zh

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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
    • F25B33/00—Boilers; Analysers; Rectifiers
    • 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
    • F25B2333/00—Details of boilers; Analysers; Rectifiers
    • F25B2333/002—Details of boilers; Analysers; Rectifiers the generator or boiler is heated electrically
    • 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
    • F25B2333/00—Details of boilers; Analysers; Rectifiers
    • F25B2333/003—Details of boilers; Analysers; Rectifiers the generator or boiler is heated by combustion gas

Definitions

  • the invention belongs to the technical field of automobile refrigerator refrigeration equipment, and particularly relates to a riser for a steam generator and an absorption refrigeration device.
  • the car refrigerator refers to the refrigeration equipment that can be carried in the car. It is a new generation of refrigeration and refrigeration appliances that are popular in the international market in recent years.
  • Car refrigerators usually include incubators, electronic car refrigerators, compressor car refrigerators and absorption refrigerators.
  • the absorption refrigerator protects the atmospheric ozone layer because it does not use Freon, and there is no compressor and any mechanical transmission parts, and no noise is generated during operation. Therefore, it has been widely used as a green product at home and abroad.
  • the refrigerating movement of the absorption refrigerator is mainly composed of a main component such as a generator, a condenser, an evaporator and an absorber, and uses a working heat source to heat a solution having a certain concentration which is transported from the absorber by the liquid storage tank in the generator, and Causing most of the low-boiling refrigerant in the solution to evaporate; the refrigerant vapor enters the condenser, is condensed into a refrigerant liquid by the cooling medium, and is depressurized into the evaporator through the throttle to absorb heat in the cooled system. The refrigerant vapor at the evaporating pressure is induced to flow back into the absorber through the solution remaining in the generator through the process.
  • a main component such as a generator, a condenser, an evaporator and an absorber
  • the riser of the generator is shown in Figures 1 to 3.
  • the riser includes a riser outer pipe 1', a riser inner pipe 2' and an inner generator pipe 3'.
  • the riser inner pipe is connected to the liquid storage tank, when not heated
  • the liquid ammonia (distilled water, liquid ammonia) in the liquid storage tank will fill the inner tube of the riser due to its own gravity, and fill the lower end of the generator tube and the inside of the generator tube at the same level as the liquid storage tank. After the heating work, bubbles will be generated inside the generator tube.
  • the top of the generator tube is ammonia vapor, water vapor, and dilute liquid ammonia (liquid that is not completely decomposed). The ammonia vapor and water vapor enter the distillation tube, and the water vapor is blocked.
  • the present invention provides a riser and an absorption refrigerating device for a steam generator to provide more sufficient ammonia vapor under the same heat source supply, to achieve full utilization of ammonia vapor, reduce energy waste, and reduce refrigeration cost.
  • a riser for a steam generator includes a riser outer pipe, a riser inner pipe and a generator pipe located inside the outer pipe of the riser, and the riser pipe and the riser inner pipe are in the riser
  • the inside of the outer tube is docked, and one end of the inner tube of the riser is connected to the liquid storage tank, a steam generating space is formed in the generator tube, and a liquid return space is formed between the generator tube and the outer tube of the riser.
  • At least one flow section is disposed in the liquid return space, the cross-sectional dimension of the throttle section being smaller than the cross-sectional dimension of other portions of the reflow space.
  • a heating tube is fixedly disposed on an outer wall of the outer tube of the riser, and the throttle portion is disposed corresponding to or higher than the heating tube.
  • the outer sleeve of the generator tube is provided with a throttle tube, and the space between the throttle tube and the outer tube of the riser tube forms the throttle portion.
  • the outer tube of the riser presses the wave mark to the inner side to form the throttle section, and the size of the space of the throttle section changes periodically along the axial direction thereof.
  • the outer tube of the riser is pressed to the inner side to form a concave point, and the concave distribution area forms the throttle section, the concave point is convex toward one side of the generator tube, and the returning liquid is at the concave point flow.
  • the outer tube of the riser is spirally pressed inwardly, or a spiral structure is formed on the inner wall of the outer tube of the riser, the distribution area of the spiral structure forms the throttle section, and the reflux liquid spirals slowly.
  • the outer pipe of the riser is pressed and deformed to the inner side at a position corresponding to the throttle section, and the pipe diameter of the outer pipe of the riser at the throttle section is smaller than that of other parts.
  • the riser outer tube comprises a vertical pipe section and a bent pipe section
  • the throttle section is disposed on the vertical pipe section, and the pipe diameter of the bent pipe section is less than or equal to the vertical pipe section.
  • the riser outer tube comprises a vertical pipe section, a throttle pipe section and a bent pipe section, and the pipe diameter of the throttle pipe section is less than or equal to the vertical pipe section.
  • the invention also discloses an absorption refrigeration device applied to a vehicle refrigerator, the absorption refrigeration device comprising an absorber, a generator, a condenser and an evaporator, wherein the generator adopts the above-mentioned riser.
  • the cross-sectional dimension of the throttling section is smaller than the cross-sectional dimension of other portions of the reflow space, such that the recirculated dilute liquid is blocked at the throttling section, slowing down the reflow speed, and the throttling section is set at Close to the heating pipe part, the part of the diluted liquid releases ammonia gas by heat, so as to provide more sufficient ammonia vapor under the same heat source supply, realize full utilization of ammonia vapor, reduce energy waste, and reduce refrigeration cost.
  • the pipe diameter of the bent pipe section is smaller than the vertical pipe section, so that the length of the bent pipe section can be further extended, and it is convenient to arrange a plurality of components and reduce the structure. space.
  • 1, 2, and 3 are schematic structural views of a riser in the prior art.
  • Figure 4 is a schematic view showing the structure of the riser in the present invention.
  • Figure 5 is a diagram showing the internal structure of the riser portion.
  • Figure 6 is a partial enlarged view of Figure 5.
  • Figure 7 is a cross-sectional view taken along line A-A of Figure 4.
  • Figure 8 is a cross-sectional view taken along line B-B of Figure 5;
  • Figure 9 is a cross-sectional view taken along line C-C of Figure 5;
  • Figure 10 is a schematic view showing the structure of Embodiment 2.
  • Figure 11 is a schematic view showing the structure of Embodiment 3.
  • the invention provides a riser tube and an absorption refrigerating device for a steam generator to provide more sufficient ammonia vapor under the same heat source supply, realize full utilization of ammonia vapor, reduce energy waste, and reduce the deficiencies in the prior art. Cooling costs.
  • a riser for a steam generator includes a riser outer pipe 1, a riser inner pipe 2 and a generator pipe 3 located inside the outer pipe of the riser 1, and a generator
  • the tube 3 and the inner tube 2 of the riser are docked inside the outer tube 1 of the riser, and one end of the inner tube 2 of the riser is connected to the liquid storage tank 4, and a steam generating space 5 is formed in the tube of the generator tube 3, and the outer tube 1 of the generator tube 3 and the riser tube 1
  • a liquid reflux space 6 is formed between the liquid and the liquid ammonia (distilled water, liquid ammonia) in the liquid storage tank is filled with the inner tube 2 of the riser due to its own gravity, and the lower end of the generator tube 3 and the liquid storage tank are in the same state.
  • the level of the generator tube is filled inside. After the heating work, bubbles will be generated inside the generator tube 3, and ammonia steam, water vapor, and dilute liquid ammonia (liquid which is not completely decomposed) are generated at the top of the generator tube 3, and the ammonia vapor and the water vapor are directed upward into the distillation tube ( Not shown), the water vapor is converted into a liquid by the resistance to reflux, and a part of the ammonia vapor is taken away by the reflux, and the reflux liquid is mixed with the weak liquid emerging from the top of the generator tube 3, and then passed through the generator tube 3 and the riser outer tube. The liquid return space 6 between 1 is returned to the absorber (not shown).
  • the liquid return space 6 is provided with at least one flow section 7, and the cross-sectional dimension of the throttle section is smaller than the cross-sectional dimension of other parts of the reflow space, so that the recirculated diluted liquid is blocked at the throttle section, slowing down the reflow speed, and the portion is thin.
  • the liquid is returned to the heating pipe and heated again to release the ammonia gas.
  • the ammonia vapor generated in this part enters the rectifying pipe to realize the full utilization of ammonia vapor to provide more sufficient ammonia vapor under the same heat source supply, reducing energy waste and reducing Cooling costs.
  • the heating pipe 11 is disposed on the outer wall of the outer pipe 1 of the riser, wherein the heating energy source can be selected from electricity or gas, and the throttle section 7 is disposed corresponding to the heating pipe 11 or higher than the heating pipe 11, so that the liquid returning can be ensured in the heater. Deceleration at or near the location, sufficient heating to release ammonia.
  • the outer portion of the generator tube 3 is sleeved with a flow tube 8, and the space between the throttle tube 8 and the outer tube 1 of the riser tube forms the above-mentioned throttle portion.
  • the diameter of the throttle tube is larger than the generator tube 3 is smaller than the outer tube 1 of the riser. Therefore, the cross-sectional area at the throttle section becomes smaller than that at other positions, and the entire flow passage is narrowed to achieve the purpose of throttling.
  • the outer tube 1 of the riser presses the wave mark 9 inward to form the throttle section, and the space of the throttle section changes periodically along the axial direction thereof.
  • the returned liquid can be Constant compression-release-compression-release is achieved, and the flow inhibition is achieved by continuous periodic compression and release.
  • the outer tube 1 of the riser is pressed inward to form a pit 10, and the distribution area of the pit 10 forms a throttle section, the pit 10 is convex toward one side of the generator tube 3, and the reflux liquid is throttled at the pit.
  • the pits can be evenly arranged, and there can be a gap between the bottom of the pit and the outer wall of the generator tube, or direct contact compression, and only the liquid can be recirculated at the point where the pit is not provided.
  • the shape of the pits may be spherical or tapered or other shapes, and the like is not limited.
  • the above-mentioned throttle tube 8, wave mark 9 and pit 10 can be concentrated in one place to form the above-mentioned
  • the throttle section 7, in other embodiments, may also be formed in a plurality of throttle sections, or only the throttle tube 8 or the wave mark 9 or the pit 10 or any combination of the two structures may be provided at the throttle section, the specific structure Forms are not restricted.
  • the outer tube 1 of the riser is pressed and deformed to the inner side at a position corresponding to the throttle section, and the diameter of the outer tube 1 of the riser at the throttle section is smaller than that of other parts.
  • the outer tube 1 of the riser includes a vertical pipe section 12 and a bent pipe section 13, and the throttle section 7 is disposed on the vertical pipe section 12, and a throttling structure such as a pit or a wave mark can be distributed over the entire length of the vertical pipe section.
  • the entire length of the throttle The diameter of the bent pipe section 13 is less than or equal to the vertical pipe section 12.
  • the diameter of the bent pipe section 13 is smaller than that of the vertical pipe section 12, and the bent pipe section has an S-shaped structure, so that the length of the bent pipe section can be further extended, and it is convenient to arrange a plurality of components and reduce the structural space.
  • the riser outer tube 1 may include a vertical pipe section, a throttle pipe section, and a bent pipe section, and the pipe diameter of the throttle pipe section is less than or equal to the vertical pipe section.
  • the specific structure is not limited.
  • the present invention also discloses an absorption refrigerating device applied to a vehicle refrigerator, the absorption refrigerating device comprising an absorber, a generator, a condenser and an evaporator, and the generator adopts the above-mentioned riser.
  • the rest is the same as that of Embodiment 1, except that the outer tube 1 of the riser tube is spirally pressed inward, or the inner wall of the outer tube 1 of the riser tube is formed with a spiral structure 21, and the distribution area of the spiral structure 21 is formed.
  • the throttle section 7 is such that the reflux liquid can spirally fall around the wall of the generator tube or the wall of the throttle tube, and can be uniformly heated in the circumferential direction to fully release the ammonia gas and improve the cooling efficiency.
  • the rest is the same as that of Embodiment 1, except that the inner wall of the outer tube of the riser tube and the outer wall of the generator tube 3 or the outer wall of the throttle tube 8 are oppositely extended with a blocking piece 31, and the blocking piece 31 is extended.
  • the invention discloses a riser for a steam generator.
  • the cross-sectional dimension of the throttle section is smaller than the cross-sectional dimension of other parts of the return space, so that the recirculated diluted liquid is blocked at the throttle section.
  • the part of the diluted liquid is released by the ammonia gas to provide more sufficient ammonia vapor under the same heat source supply, realize the full utilization of ammonia vapor, and reduce energy waste. Reduce cooling costs.
  • the pipe diameter of the bent pipe section is smaller than the vertical pipe section, so that the length of the bent pipe section can be further extended, and it is convenient to arrange a plurality of components and reduce the structure. space.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Sorption Type Refrigeration Machines (AREA)

Abstract

一种蒸气发生器用提升管及吸收式制冷装置，该提升管包括提升管外管（1）、位于提升管外管（1）内部的提升管内管（2）与发生器管（3），发生器管（3）与提升管外管（1）之间形成液体回流空间（6），在液体回流空间（6）内设置有节流段（7），节流段（7）的横截面尺寸小于液体回流空间（6）的其他部分，回流的稀液在节流段受阻，减缓回流速度，稀液受热释放出氨气。

Description

一种蒸气发生器用提升管及吸收式制冷装置
技术领域
本发明属于车载冰箱制冷设备技术领域，具体涉及一种蒸气发生器用提升管及吸收式制冷装置。
背景技术
车载冰箱是指可以在汽车上携带的制冷设备，是近年来国际市场上较为流行的新一代制冷、冷藏器具。车载冰箱通常包括保温箱、电子车载冰箱、压缩机车载冰箱及吸收式冰箱，吸收式冰箱由于不用氟利昂，保护了大气臭氧层，且没有压缩机和任何机械传动部分，运行时不会产生任何噪音，因此作为绿色环保产品被国内外广泛应用。
吸收式冰箱的制冷机芯主要由发生器、冷凝器、蒸发器与吸收器等主要部件组成，利用工作热源在发生器中加热由储液罐从吸收器输送来的具有一定浓度的溶液，并使溶液中的大部分低沸点制冷剂蒸发出来；制冷剂蒸气进入冷凝器中，被冷却介质冷凝成制冷剂液体，在经节流器降压到蒸发器中，吸收被冷却系统中的热量而激化成蒸发压力下的制冷剂蒸气，在发生器中经发生过程剩余的溶液回流进入吸收器。
发生器的提升管如图1至图3所示，提升管包括提升管外管1’、提升管内管2’及内部的发生器管3’，提升管内管连接至储液罐，未受热时储液罐中的液氨(蒸馏水、液氨)由于自身重力会将提升管内管填充满，并将发生器管下端及与储液罐在同一水平高度的发生器管内部填充满。加热工作后发生器管内部会产生气泡往上冒，发生器管顶部有氨蒸气、水蒸气、稀液氨(未完全分解的液体)产生，氨蒸气与水蒸气向上进入精馏管，水蒸气受阻力的作用化成液体而回流，回流同时会带走一部分氨蒸气，回流液体与发生器管顶部冒出的稀液混合后通过发生器管与提升管外管之间的缝隙C回流到吸收器(未示出)，回流的稀液在受热区受热后会产生部分氨蒸气进入精馏管。但是目前现有的提升管结构形式不能将稀液中的氨充分利用，且氨蒸气不足需要更多的热能供热而转化，因此会造成能源浪费，增加制冷成本。
因此，鉴于以上问题，有必要提出一种新型的提升管结构，以实现同等热源供给下提供更充足的氨蒸气，实现氨蒸气的充分利用，减少能源浪费，降低制冷成本。
发明内容
有鉴于此，本发明提供了一种蒸气发生器用提升管及吸收式制冷装置，以实现同等热源供给下提供更充足的氨蒸气，实现氨蒸气的充分利用，减少能源浪费，降低制冷成本。
根据本发明的目的提出的一种蒸气发生器用提升管，包括提升管外管、位于提升管外管内部的提升管内管与发生器管，所述发生器管与所述提升管内管在提升管外管内部实现对接，所述提升管内管的一端连接储液罐，所述发生器管管内形成蒸气发生空间，所述发生器管与所述提升管外管之间形成液体回流空间，所述液体回流空间内设置有至少一节流段，所述节流段的横截面尺寸小于所述回流空间其他部分横截面尺寸。
优选的，所述提升管外管外壁上固定设置有加热管，所述节流段对应于加热管设置或高于所述加热管设置。
优选的，所述发生器管的外部套设有一节流管，所述节流管与所提升管外管之间的空间形成所述节流段。
优选的，所述提升管外管向内侧压制波浪痕形成所述节流段，所述节流段的空间大小沿其轴向呈周期性变化。
优选的，所述提升管外管向内侧压制形成凹点，所述凹点分布区域形成所述节流段，所述凹点向发生器管的一侧凸起，回流液体在凹点处节流。
优选的，所述提升管外管向内侧压制呈螺旋形，或所述提升管外管内壁上成型有螺旋结构，所述螺旋结构分布区域形成所述节流段，回流液体呈螺旋形缓慢下落。
优选的，所述提升管外管上与所述节流段对应位置处向内侧压制变形，节流段处提升管外管的管径小于其他部分管径。
优选的，所述提升管外管包括竖直管段与弯折管段，所述节流段设置于所述竖直管段上，所述弯折管段的管径小于或等于所述竖直管段。
优选的，所述提升管外管包括竖直管段、节流管段以及弯折管段，所述节流管段的管径小于或等于所述竖直管段。
本发明还公开了一种吸收式制冷装置，应用于车载冰箱上，所述吸收式制冷装置包括吸收器、发生器、冷凝器及蒸发器，所述发生器采用上述的提升管。
与现有技术相比，本发明公开的蒸气发生器用提升管的优点是：
通过在液体回流空间内设置节流段，节流段的横截面尺寸小于回流空间其他部分横截面尺寸，这样回流的稀液在节流段处受阻，减缓回流速度，同时将节流段设置在靠近加热管部分，该部分稀液受热释放出氨气，以实现同等热源供给下提供更充足的氨蒸气，实现氨蒸气的充分利用，减少能源浪费，降低制冷成本。
此外，通过将提升管外管分为竖直管段与弯折管段，弯折管段的管径小于竖直管段，这样可以进一步的延长弯折管段的长度，方便布置多个元器件，减小结构空间。
附图说明
为了更清楚地说明本发明实施例或现有技术中的技术方案，下面将对实施例或现有技术描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本发明的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。
图1、2、3为现有技术中提升管的结构示意图。
图4为本发明中提升管的结构示意图。
图5为提升管部分内部结构图。
图6为图5中局部放大图。
图7为图4中A-A剖视图。
图8为图5中B-B剖视图。
图9为图5中C-C剖视图。
图10为实施例2的结构示意图。
图11为实施例3的结构示意图。
图中的数字或字母所代表的相应部件的名称：
1、提升管外管 2、提升管内管 3、发生器管 4、储液罐 5、蒸气发生空间 6、液体回流空间 7、节流段 8、节流管 9、波浪痕 10、凹点 11、加热管 12、竖直管段 13、弯折管段
21、螺纹结构 31、挡片
具体实施方式
传统的发生器提升管内回流时会带走一部分氨蒸气，不能将稀液中的氨充分利用，且氨蒸气不足需要更多的热能供热而转化，因此会造成能源浪费，增加制冷成本。
本发明针对现有技术中的不足，提供了一种蒸气发生器用提升管及吸收式制冷装置，以实现同等热源供给下提供更充足的氨蒸气，实现氨蒸气的充分利用，减少能源浪费，降低制冷成本。
下面将通过具体实施方式对本发明的技术方案进行清楚、完整地描述。显然，所描述的实施例仅仅是本发明一部分实施例，而不是全部的实施例。基于本发明中的实施例，本 领域普通技术人员在没有作出创造性劳动前提下所获得的所有其他实施例，都属于本发明保护的范围。
请一并参见图4至图9，如图所示，一种蒸气发生器用提升管，包括提升管外管1、位于提升管外管1内部的提升管内管2与发生器管3，发生器管3与提升管内管2在提升管外管1内部实现对接，提升管内管2的一端连接储液罐4，发生器管3管内形成蒸气发生空间5，发生器管3与提升管外管1之间形成液体回流空间6，未受热时储液罐中的液氨(蒸馏水、液氨)由于自身重力会将提升管内管2填充满，并将发生器管3下端及与储液罐在同一水平高度的发生器管内部填充满。加热工作后发生器管3内部会产生气泡往上冒，发生器管3顶部有氨蒸气、水蒸气、稀液氨(未完全分解的液体)产生，氨蒸气与水蒸气向上进入精馏管(未示出)，水蒸气受阻力的作用化成液体而回流，回流同时会带走一部分氨蒸气，回流液体与发生器管3顶部冒出的稀液混合后通过发生器管3与提升管外管1之间的液体回流空间6回流到吸收器(未示出)。
液体回流空间6内设置有至少一节流段7，节流段的横截面尺寸小于回流空间其他部分横截面尺寸，这样回流的稀液在节流段处受阻，减缓回流速度，同时该部分稀液回流至加热管处被再次加热释放出氨气，该部分产生的氨蒸气进入精馏管，实现氨蒸气的充分利用，以实现同等热源供给下提供更充足的氨蒸气，减少能源浪费，降低制冷成本。
加热管11设置在提升管外管1外壁上其中加热能源可选择电或燃气等，节流段7对应于加热管11设置或高于加热管11设置，这样可保证回流的液体可在加热器位置处或附近减速，能够充分的加热释放氨气。
优选的，发生器管3的外部套设有一节流管8，节流管8与提升管外管1之间的空间形成上述节流段。节流管管径大于发生器管3小于提升管外管1，因此，该节流段处的横截面积较其他位置处变小，整个流道变窄，实现节流的目的。
进一步的，提升管外管1向内侧压制波浪痕9形成所述节流段，节流段的空间大小沿其轴向呈周期性变化，在该结构形式的限定下，回流的液体可在该处实现不断的压缩-释放-压缩-释放，通过不断的周期性的压缩、释放实现阻流的目的，有效降低流速。
进一步的，提升管外管1向内侧压制形成凹点10，凹点10分布区域形成节流段，凹点10向发生器管3的一侧凸起，回流液体在凹点处节流。凹点可均匀设置，凹点的底部与发生器管外壁间可存在间隙，或直接接触压紧，仅实现在未设置凹点处回流液体。其中凹点的形状可为球形或锥形或其他形状等，具体不做限制。
优选的，上述提及的节流管8、波浪痕9与凹点10可集中在一处设置，形成所述的 节流段7，其他实施例中还可在成型多处节流段，或者在节流段处仅设置节流管8或波浪痕9或凹点10或其中两个结构的任意组合，具体结构形式不做限制。
提升管外管1上与所述节流段对应位置处向内侧压制变形，节流段处提升管外管1的管径小于其他部分管径。
提升管外管1包括竖直管段12与弯折管段13，节流段7设置于竖直管段上12，可在竖直管段整个长度上均分布设置凹点或波浪痕等节流结构，实现整段长度的节流。弯折管段13的管径小于或等于竖直管段12。本实施例中优选弯折管段13管径小于竖直管段12，弯折管段呈S型结构，这样设置可以进一步的延长弯折管段的长度，方便布置多个元器件，减小结构空间。
其他实施例中，提升管外管1可包括竖直管段、节流管段以及弯折管段，节流管段的管径小于或等于竖直管段。具体结构不做限制。
此外，本发明还公开了一种吸收式制冷装置，应用于车载冰箱上，吸收式制冷装置包括吸收器、发生器、冷凝器及蒸发器，发生器采用上述的提升管。
实施例2
如图10所示，其余与实施例1相同，不同之处在于，提升管外管1向内侧压制呈螺旋形，或提升管外管1内壁上成型有螺旋结构21，螺旋结构21分布区域形成节流段7，这样回流液体可呈螺旋形绕发生器管壁或节流管管壁缓慢下落，可在周向上均匀受热，充分释放氨气，提高制冷效率。
实施例3
如图11所示，其余与实施例1相同，不同之处在于，提升管外管1内壁与发生器管3外壁或节流管8外壁相对交错伸出有挡片31，挡片31伸出端与对应管壁间存在间隙，回流液体可在挡片的阻流下沿间隙呈S型向下回流，减缓回流速度，实现回流液体充分加热释放氨气，提高制冷效率。
本发明公开了一种蒸气发生器用提升管，通过在液体回流空间内设置节流段，节流段的横截面尺寸小于回流空间其他部分横截面尺寸，这样回流的稀液在节流段处受阻，减缓回流速度，同时将节流段设置在靠近加热管部分，该部分稀液受热释放出氨气，以实现同等热源供给下提供更充足的氨蒸气，实现氨蒸气的充分利用，减少能源浪费，降低制冷成本。
此外，通过将提升管外管分为竖直管段与弯折管段，弯折管段的管径小于竖直管段，这样可以进一步的延长弯折管段的长度，方便布置多个元器件，减小结构空间。
对所公开的实施例的上述说明，使本领域专业技术人员能够实现或使用本发明。对 这些实施例的多种修改对本领域的专业技术人员来说将是显而易见的，本文中所定义的一般原理可以在不脱离本发明的精神或范围的情况下，在其它实施例中实现。因此，本发明将不会被限制于本文所示的这些实施例，而是要符合与本文所公开的原理和新颖特点相一致的最宽的范围。

Claims (10)

  1. 一种蒸气发生器用提升管，包括提升管外管、位于提升管外管内部的提升管内管与发生器管，所述发生器管与所述提升管内管在提升管外管内部实现对接，所述提升管内管的一端连接储液罐，其特征在于，所述发生器管管内形成蒸气发生空间，所述发生器管与所述提升管外管之间形成液体回流空间，所述液体回流空间内设置有至少一节流段，所述节流段的横截面尺寸小于所述回流空间其他部分横截面尺寸。
  2. 根据权利要求1所述的蒸气发生器用提升管，其特征在于，所述提升管外管外壁上固定设置有加热管，所述节流段对应于加热管设置或高于所述加热管设置。
  3. 根据权利要求1所述的蒸气发生器用提升管，其特征在于，所述发生器管的外部套设有一节流管，所述节流管与所提升管外管之间的空间形成所述节流段。
  4. 根据权利要求1所述的蒸气发生器用提升管，其特征在于，所述提升管外管向内侧压制波浪痕形成所述节流段，所述节流段的空间大小沿其轴向呈周期性变化。
  5. 根据权利要求1所述的蒸气发生器用提升管，其特征在于，所述提升管外管向内侧压制形成凹点，所述凹点分布区域形成所述节流段，所述凹点向发生器管的一侧凸起，回流液体在凹点处节流。
  6. 根据权利要求1所述的蒸气发生器用提升管，其特征在于，所述提升管外管向内侧压制呈螺旋形，或所述提升管外管内壁上成型有螺旋结构，所述螺旋结构分布区域形成所述节流段，回流液体呈螺旋形缓慢下落。
  7. 根据权利要求3所述的蒸气发生器用提升管，其特征在于，所述提升管外管上与所述节流段对应位置处向内侧压制变形，节流段处提升管外管的管径小于其他部分管径。
  8. 根据权利要求1所述的蒸气发生器用提升管，其特征在于，所述提升管外管包括竖直管段与弯折管段，所述节流段设置于所述竖直管段上，所述弯折管段的管径小于或等于所述竖直管段。
  9. 根据权利要求1所述的蒸气发生器用提升管，其特征在于，所述提升管外管包括竖直管段、节流管段以及弯折管段，所述节流管段的管径小于或等于所述竖直管段。
  10. 一种吸收式制冷装置，应用于车载冰箱上，所述吸收式制冷装置包括吸收器、发生器、冷凝器及蒸发器，所述发生器采用权利要求1-9任一项所述的提升管。
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CN207501488U (zh) * 2017-11-13 2018-06-15 苏州市泰美达电器有限公司 一种蒸气发生器用提升管及吸收式制冷装置

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US4362029A (en) * 1980-04-15 1982-12-07 Aktiebolaget Electrolux Absorption refrigerator boiler construction
CN1389690A (zh) * 2001-06-01 2003-01-08 热能科技开发股份有限公司 使用于吸收扩散式冷冻装置的发生器结构
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