WO2016065970A1 - 蒸汽发生器 - Google Patents

蒸汽发生器 Download PDF

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Publication number
WO2016065970A1
WO2016065970A1 PCT/CN2015/086431 CN2015086431W WO2016065970A1 WO 2016065970 A1 WO2016065970 A1 WO 2016065970A1 CN 2015086431 W CN2015086431 W CN 2015086431W WO 2016065970 A1 WO2016065970 A1 WO 2016065970A1
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Prior art keywords
pipe
steam
steam generator
housing
water
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PCT/CN2015/086431
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English (en)
French (fr)
Inventor
钟均亮
戈闯
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江苏美的清洁电器股份有限公司
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Publication of WO2016065970A1 publication Critical patent/WO2016065970A1/zh

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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
    • F24H1/10—Continuous-flow heaters, i.e. heaters in which heat is generated only while the water is flowing, e.g. with direct contact of the water with the heating medium
    • F24H1/12—Continuous-flow heaters, i.e. heaters in which heat is generated only while the water is flowing, e.g. with direct contact of the water with the heating medium in which the water is kept separate from the heating medium
    • F24H1/14—Continuous-flow heaters, i.e. heaters in which heat is generated only while the water is flowing, e.g. with direct contact of the water with the heating medium in which the water is kept separate from the heating medium by tubes, e.g. bent in serpentine form
    • F24H1/16—Continuous-flow heaters, i.e. heaters in which heat is generated only while the water is flowing, e.g. with direct contact of the water with the heating medium in which the water is kept separate from the heating medium by tubes, e.g. bent in serpentine form helically or spirally coiled

Definitions

  • the present invention relates to the field of home appliances, and more particularly to a steam generator.
  • the existing instantaneous heating type steam generator comprises a main body, a water pipe and a heater.
  • the main body is generally made of aluminum or other metal materials.
  • the water pipe and the heater are located inside the main body, the water pipe has a water inlet at one end and a steam discharge port at the other end.
  • the shape of the heater is a U-shape composed of two straight portions and a semicircular portion, and the semicircular portion of the heater has a curled shape, and the copper water pipe is in direct contact with the U-shaped heating pipe for heat conduction.
  • the water pipe of the steam generator is a U-shaped structure, and the structure has the following two defects: one is that the water inlet and the steam outlet are in the same direction, and the distance is relatively close, and the water inlet enters the cold water with a lower temperature.
  • the steam outlet passes through the steam with higher temperature.
  • the temperature of the two pipes is obviously different, and the heat is transferred through the metal body in the middle of the two ports, so that the steam temperature in the steam outlet is lowered, and the steam dryness is lowered.
  • the steam cleaning effect will be reduced; the other is that the steam generator is generally regulated and protected by a thermostat and a thermal fuse, and the thermostat and the fuse have corresponding specifications and a certain temperature error.
  • this type of steam generator is designed to increase the thermal conductivity by directly contacting the water pipe with the heating pipe to shorten the total length of the copper water pipe; however, from the actual situation, the heat transfer efficiency of the direct contact between the water pipe and the electric heating pipe Compared with the heat transfer efficiency between the water pipe and the electric heating pipe through the secondary heat transfer of the metal body having good thermal conductivity, there may be a certain difference in the initial stage of energization. Different, but after the work is stable, there is almost no difference between the two heat conduction methods; on the contrary, because the length of the copper water pipe in the main body of the steam generator is too short, the heat receiving area of the water is too small, resulting in the gasification rate of the entire steam generator. Not high, steam dryness is low.
  • the present invention aims to solve at least one of the technical problems existing in the prior art.
  • the present invention provides a steam generator including: a casing having a water inlet and a steam outlet, wherein the water inlet and the steam outlet are located in the casing a water pipe having a spiral shape, the water pipe being located in the casing, one end extending from the water inlet, the other end extending from the steam outlet; and an electric heating pipe,
  • An electric heating tube is located in the casing, the water pipe is coiled on the electric heating pipe, and the electric heating pipe comprises a first straight pipe section, a bending section and a second straight pipe section connected in sequence, the first straight pipe section Parallel to the second straight pipe section and on the same side of the bending section, and the first straight pipe section and the second straight pipe section both extend out of the casing.
  • the steam generator provided by the invention has the water inlet and the steam outlet located on different wall surfaces of the casing, that is, not at the same end, without heat transfer between each other, and the steam temperature is relatively constant; the spiral water pipe is surrounded by the electric heating pipe On the upper side, a small gap is reserved between the electric heating pipe and the water pipe, so that the thermal conductivity of the direct contact between the two pipes can be approximated.
  • the water pipe since the water pipe is spirally wound around the periphery of the electric heating pipe, the length of the heated pipe is long.
  • the heat energy utilization rate of the whole steam generator is obviously improved compared with the existing products, which can effectively increase the gasification rate, improve the steam dryness and improve the steam performance; in addition, the temperature distribution on the shell of the steam generator is obvious, and the temperature is obvious.
  • the temperature sensing point of the controller and fuse is very advantageous, so that the steam performance of the entire steam generator can be well protected.
  • the steam generator provided according to the above embodiment of the present invention has the following additional technical features:
  • the bending section is spiral, and the water pipe is coiled outside the first straight pipe section and the second straight pipe section.
  • the main part of the water pipe and the electric heating section adopts a coil spiral wrap design, and the water pipe is tightly wound around the outside of the electric heating pipe, and the heat energy utilization rate is high, and the assembly space is greatly reduced, and the assembly is easy to be assembled in a narrow space.
  • the bent section is W-shaped, and the water pipe is coiled outside the bent section and located between the first straight pipe section and the second straight pipe section.
  • a first through hole and a second through hole are further defined in the housing, and the first through hole and the water inlet are located on a same wall surface of the housing,
  • the two through holes and the steam outlet are located on the same wall surface of the casing;
  • the water pipe includes a first pipe body and a second pipe body, and the two ends of the first pipe body are respectively from the water inlet and the water inlet
  • the second through hole protrudes from the casing, and two ends of the second pipe body respectively protrude from the steam outlet and the second through hole, and the second through hole
  • An extended end of the first tubular body communicates with an end of the second tubular body extending from the second through hole.
  • the ends of the first pipe body and the second pipe body are connected, so that the two water pipes are connected to form a single channel having only one water inlet and one steam outlet, and the arrangement of the second pipe body increases the length of the heat pipe, further enhancing The heat energy utilization rate of the steam generator effectively increases the gasification rate of the steam generator and improves the steam dryness, thereby effectively improving the steam performance.
  • an end portion of the first pipe body extending from the second through hole and an end portion of the second pipe body extending from the second through hole pass through a silicone tube Connected.
  • the silicone tube has poor thermal conductivity and can effectively reduce the heat loss of the water pipe exposed outside the steam generator housing.
  • the water pipe has a diameter of 2 mm or more and 10 mm or less.
  • the water pipe has a larger diameter design to reduce the risk of clogging the pipe due to scale or other metal oxides, thus effectively extending the life of the steam generator.
  • the water pipe is a stainless steel water pipe.
  • Stainless steel has good thermal conductivity and is highly resistant to oxidation, which reduces the risk of clogging pipes due to scale or other metal oxides, further extending the life of the steam generator.
  • the housing is a rectangular housing.
  • the shell is mostly rectangular, but it does not define a specific shape. It can be designed according to market needs. Shape, such as trapezoidal, diamond, etc.
  • the housing is an alloy housing.
  • the housing is a metal housing.
  • the metal or alloy material has good thermal conductivity, and can perform secondary heat transfer between the water pipe and the electric heating section, thereby effectively increasing the heat receiving area of the water pipe, thereby improving the heat energy utilization rate of the steam generator and increasing the gasification. Rate, improved steam dryness and improved steam performance.
  • FIG. 1 is a first perspective structural view of a steam generator according to an embodiment of the present invention
  • FIG. 2 is a front view showing the structure of the steam generator shown in Figure 1;
  • FIG 3 is a right side view of the steam generator shown in Figure 1;
  • Figure 4 is a top plan view of the steam generator shown in Figure 1;
  • Figure 5 is a second perspective view of a steam generator according to an embodiment of the present invention.
  • Figure 6 is a front view showing the structure of the steam generator shown in Figure 5;
  • Figure 7 is a right side view of the steam generator shown in Figure 5;
  • Figure 8 is a top plan view of the steam generator shown in Figure 5.
  • FIGS. 1 through 8 A steam generator according to some embodiments of the present invention will be described below with reference to FIGS. 1 through 8, wherein in order to clearly show the structure of the water pipe and the electric heating pipe, in FIGS. 1 to 8, the housing will be transparently processed.
  • the water pipes and electric heating in the casing are indicated by solid lines.
  • the water pipes and the electric heating pipes are transparently treated.
  • a steam generator includes: a casing 1, a water pipe 2, and an electric heating pipe 3,
  • the housing 1 is provided with a water inlet and a steam outlet (not shown), and the water inlet and the steam outlet are located on different wall surfaces of the housing 1, the water tube 2 is spiral, and the water tube 2 is located in the housing.
  • the electric heating tube 3 is located in the casing 1
  • the water pipe 2 is coiled on the electric heating pipe 3
  • the electric heating pipe 3 includes the first straight connected in turn.
  • the pipe section 31, the bending section 32 and the second straight pipe section 33, the first straight pipe section 31 and the second straight pipe section 33 are parallel to each other and located on the same side of the bending section 32, and the first straight pipe section 31 and the second straight pipe section 33 are both
  • the housing 1 is extended.
  • the water inlet and the steam outlet are located on different wall surfaces of the casing, that is, not at the same end, and there is no heat transfer between the two, and the steam temperature is relatively constant; the spiral water pipe is surrounded by the electric heating.
  • the water pipe adopts a spiral pipe design, the water storage amount is small, the internal pressure is lower than that of the same type of product, and the internal air pressure is relatively constant, which avoids the steam which is common in the market after the water storage type steam generator is disconnected. Can not stop in time, the steam generator does not rely on other Under the premise of cutting off the valve and other equipment, the shutdown steam stop time is within 3 seconds. Due to the different design of the inlet and outlet ports and the regular spiral arrangement of the water pipes, the surface temperature distribution of the heating elements is relatively regular, for the thermostat and fuse.
  • the temperature sensing specification and the temperature sensing point are very favorable, which is beneficial to adjust and protect the steam generator, and can effectively prevent the heat conduction between the steam outlet and the water inlet, and ensure the steam performance of the steam outlet steam, and the steam temperature is constant.
  • the dripping amount is not more than 10 grams in six minutes, so that the cleaning benefit is effectively guaranteed.
  • the water pipe 2 has a diameter of 2 mm or more and 10 mm or less.
  • the water pipe has a larger diameter design to reduce the risk of clogging the pipe due to scale or other metal oxides, thus effectively extending the life of the steam generator.
  • the water pipe 2 is a stainless steel water pipe; as shown in FIGS. 1 to 8, the casing 1 is a rectangular casing.
  • Stainless steel has good thermal conductivity and strong oxidation resistance, which can reduce the risk of clogging pipes due to scale or other metal oxides, and further extend the service life of steam generators.
  • water pipes can also adopt other good thermal conductivity and good oxidation resistance.
  • Metal or alloy material
  • the housing is mostly rectangular, but it does not define a specific shape, and other shapes such as trapezoids, diamonds, and the like can be designed according to market needs.
  • the housing 1 is an alloy housing
  • the housing 1 is a metal housing.
  • the metal or alloy material has good thermal conductivity, and can perform secondary heat transfer between the water pipe and the electric heating section, thereby effectively increasing the heat receiving area of the water pipe, thereby improving the heat energy utilization rate of the steam generator and increasing the gasification. Rate, improved steam dryness and improved steam performance.
  • the bending section 32 is spiral, and the water pipe 2 is wound around the first straight pipe section 31 and the second straight pipe section 33. .
  • the main part of the water pipe and the electric heating section adopts a coil spiral wrap design, and the water pipe is tightly wound around the outside of the electric heating pipe, and the heat energy utilization rate is high, and the assembly space is greatly reduced, and the assembly is easy to be assembled in a narrow space.
  • the bent portion 32 has a W shape, and the water pipe 2 is wound around the outside of the bent portion 32, and is located at the first straight pipe portion 31 and the second straight portion. Between the pipe segments 33. In this way, the thermal conductivity between the water pipe and the electric heating pipe is further improved, thereby The heat energy utilization rate of the entire steam generator is significantly improved.
  • the housing 1 is further provided with a first through hole and a second through hole (not shown), the first through hole and the water inlet.
  • the second through hole and the steam outlet are located on the same wall surface of the casing 1.
  • the water pipe 2 includes a first pipe body 21 and a second pipe body 22, and the two ends of the first pipe body 21 are respectively The water inlet and the second through hole protrude from the casing 1.
  • the two ends of the second pipe body 22 respectively protrude from the steam outlet and the second through hole, and the first pipe protrudes from the second through hole.
  • the end of the body 21 communicates with the end of the second tube 22 extending from the second through hole.
  • the ends of the first pipe body and the second pipe body are connected, so that the two water pipes are connected to form a single channel having only one water inlet and one steam outlet, and the arrangement of the second pipe body increases the length of the heat pipe, further enhancing The heat energy utilization rate of the steam generator effectively increases the gasification rate of the steam generator and improves the steam dryness, thereby effectively improving the steam performance.
  • the end portion of the first tube body 21 projecting from the second through hole and the end portion of the second tube body 22 projecting from the second through hole are in communication with each other through the silicone tube 23.
  • the silicone tube has poor thermal conductivity and can effectively reduce the heat loss of the water pipe exposed outside the steam generator housing.
  • end portions connecting the first pipe body and the second pipe body may be other high temperature resistant pipes that can withstand a high temperature of 150 ° C.
  • the steam temperature is relatively constant; the spiral water pipe is surrounded by the electric heating pipe, and a small gap is reserved between the electric heating pipe and the water pipe, so that the heat conductivity of the direct contact between the two pipes can be approximated, or a third party can be used.
  • connection may be a fixed connection, a detachable connection, or an integral connection; it may be directly connected or indirectly connected through an intermediate medium.
  • connection may be a fixed connection, a detachable connection, or an integral connection; it may be directly connected or indirectly connected through an intermediate medium.
  • first and second are used for the purpose of description, and are not to be construed as indicating or implying relative importance unless otherwise specifically defined and defined.
  • the description of the terms “one embodiment”, “some embodiments”, “specific embodiments” and the like means that the specific features, structures, materials, or characteristics described in connection with the embodiments or examples are included in the present invention. At least one embodiment or example.
  • the schematic representation of the above terms does not necessarily refer to the same embodiment or example.
  • the particular features, structures, materials, or characteristics described may be combined in a suitable manner in any one or more embodiments or examples.

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Abstract

一种蒸汽发生器，包括壳体（1）、水管（2）和电加热管（3），进水口和出蒸汽口位于壳体（1）不同的壁面上，即不在同一端，相互之间无热量的传递影响，蒸汽温度相对恒定；螺旋状的水管（2）环绕在电加热管（3）上，电加热管（3）与水管（2）之间预留极小的间隙，这样既可以近似达到两种管道直接接触的热传导率，也可以通过第三方壳体（1）导热，同时，由于水管（2）采用螺旋式直接环绕在电加热管（3）上，受热管道长度较长，整个蒸汽发生器的热能利用率相对于现有产品明显提升，可有效增大气化率，提高蒸汽干燥度并改善蒸汽性能；此外，该蒸汽发生器的壳体（1）上的温度分布特点明显，对于温控器和保险丝的感温点选取非常有利，从而使得整个蒸汽发生器的蒸汽性能能够得到良好的保障。

Description

蒸汽发生器 技术领域
本发明涉及家电领域，更具体而言，涉及一种蒸汽发生器。
背景技术
现有的瞬时加热式蒸汽发生器，包括主体、水管和加热器，主体一般是铝或者其他金属材质的，水管和加热器均位于主体的内部，水管一端为入水口，另一端为蒸汽排放口，加热器的形状为由两个直线部和一个半圆部组成的U字型，加热器的半圆部为卷曲的形状，铜质水管与U型加热管直接接触并进行热传导。
上述蒸汽发生器的水管是U型结构，这样的结构具有以下两个缺陷：一个是，入水口和出蒸汽口在同一方向上，且距离较近，入水口进入的是温度较低的凉水，出蒸汽口通过的是温度较高的蒸汽，两管道温度存在明显差异，会通过两端口中间的金属主体进行热传导，导致出蒸汽口内喷出的蒸汽温度被降低，蒸汽干燥度会有一定的下降，则蒸汽清洁效应就会有所下降；另一个是，蒸汽发生器一般都要用温控器和温度保险丝进行调节和保护，而温控器和保险丝都有相应的规格和一定的温度误差，这就对温控器和保险丝的放置点的选取要求较高，必须是能够快速、准确地反映蒸汽发生器内部温度变化并且温度较为恒定的位置，而这种U型水管的设计在温控器和保险丝感温点的选取上难度很大，市场上该类型产品常见的问题就是因温控器不够灵敏而导致蒸汽性能差异较大，产品的性能不能得到很好的保障。
另外，该类型蒸汽发生器的设计目的是通过将水管与发热管直接接触来提高热导率，以缩短铜质水管的总长度；然而从实际情况来看，水管和电热管直接接触的热传导效率与水管和电热管之间通过导热性能良好的金属主体进行二次热传递的热传导效率相比，在通电初期可能会存在一定差 异，但在工作稳定后，两种热传导方式几乎没有差异；相反，由于该类型蒸汽发生器主体内的铜质水管长度太短，水的受热面积太小，导致整个蒸汽发生器的化气率不高，蒸汽干燥度较低。
发明内容
本发明旨在至少解决现有技术中存在的技术问题之一。
为此，本发明的目的在于，提供一种蒸汽发生器，该蒸汽发生器具有蒸汽化气率高、干燥度高的优点。
为实现上述目的，本发明提供了一种蒸汽发生器，包括：壳体，所述壳体上设置有进水口和出蒸汽口，且所述进水口和所述出蒸汽口位于所述壳体的不同壁面上；水管，所述水管呈螺旋状，所述水管位于所述壳体内，一端自所述进水口伸出，另一端自所述出蒸汽口伸出；和电加热管，所述电加热管位于所述壳体内，所述水管盘绕在所述电加热管上，所述电加热管包括依次连接的第一直管段、弯折段和第二直管段，所述第一直管段与所述第二直管段相互平行并位于所述弯折段的同一侧，且所述第一直管段和所述第二直管段均伸出所述壳体。
本发明提供的蒸汽发生器，进水口和出蒸汽口位于壳体不同的壁面上，即不在同一端，相互之间无热量的传递影响，蒸汽温度相对恒定；螺旋状的水管环绕在电加热管上，电加热管与水管之间预留极小的间隙，这样可以近似达到两种管道直接接触的热传导率，同时，由于水管采用螺旋式直接环绕在电加热管***，受热管道长度较长，整个蒸汽发生器的热能利用率相对于现有产品明显提升，可有效增大气化率，提高蒸汽干燥度并改善蒸汽性能；此外，该蒸汽发生器的壳体上的温度分布特点明显，对于温控器和保险丝的感温点选取非常有利，从而使得整个蒸汽发生器的蒸汽性能能够得到良好的保障。
另外，根据本发明上述实施例提供的蒸汽发生器还具有如下附加技术特征：
根据本发明的一个实施例，所述弯折段呈螺旋状，所述水管盘绕在所述第一直管段和所述第二直管段的外部。
水管和电加热段的主要部分都采用线圈螺旋环绕式设计，且水管紧绕电加热管外部，热能利用率高，同时极大地减小装配空间，易于装配于窄小空间内。
根据本发明的一个实施例，所述弯折段呈W形，所述水管盘绕在所述弯折段的外部，并位于所述第一直管段与所述第二直管段之间。
根据本发明的一个实施例，所述壳体上还开设有第一通孔和第二通孔，所述第一通孔与所述进水口位于所述壳体的同一壁面上，所述第二通孔与所述出蒸汽口位于所述壳体的同一壁面上；所述水管包括第一管体和第二管体，所述第一管体的两端分别自所述进水口和所述第二通孔伸出所述壳体，所述第二管体的两端分别自所述出蒸汽口和所述第二通孔伸出所述壳体，且自所述第二通孔伸出的所述第一管体的端部与自所述第二通孔伸出的所述第二管体的端部相连通。
第一管体和第二管体的端部相连通，使两水管连接形成只有一个进水口和一个出蒸汽口的单通道，第二管体的设置，增加了受热管道的长度，进一步提升了蒸汽发生器的热能利用率，从而有效增大了蒸汽发生器的气化率，并提高了蒸汽干燥度，进而有效地改善了蒸汽性能。
根据本发明的一个实施例，自所述第二通孔伸出的所述第一管体的端部与自所述第二通孔伸出的所述第二管体的端部通过硅胶管相连通。
硅胶管导热性能较差，能有效降低裸露在蒸汽发生器壳体外部水管的热量散失。
根据本发明的一个实施例，所述水管的直径大于等于2mm且小于等于10mm。
水管采用孔径较大的设计，可以减少因水垢或其他金属氧化物堵塞管道的风险，从而有效地延长了蒸汽发生器的使用寿命。
根据本发明的一个实施例，所述水管为不锈钢水管。
不锈钢导热性能良好，而且抗氧化性很强，可以减少因水垢或其他金属氧化物堵塞管道的风险，进一步延长了蒸汽发生器的使用寿命。
根据本发明的一个实施例，所述壳体为矩形壳体。
壳体多以矩形为主，但不限定具体形状，可以根据市场需要设计其他 形状，例如梯形、菱形等。
根据本发明的一个实施例，所述壳体为合金壳体。
根据本发明的一个实施例，所述壳体为金属壳体。
金属或者合金材料的导热性能良好，可以在水管和电加热段之间进行二次热传递，有效地增大了水管的受热面积，从而提高了蒸汽发生器的热能利用率，增大了气化率，提高了蒸汽干燥度并改善了蒸汽性能。
本发明的附加方面和优点将在下面的描述部分中变得明显，或通过本发明的实践了解到。
附图说明
本发明的上述和/或附加的方面和优点从结合下面附图对实施例的描述中将变得明显和容易理解，其中：
图1是根据本发明一个实施例所述的蒸汽发生器的第一种立体结构示意图；
图2是图1所示的蒸汽发生器的主视结构示意图；
图3是图1所示的蒸汽发生器的右视结构示意图；
图4是图1所示的蒸汽发生器的俯视示意图；
图5是根据本发明一个实施例所述的蒸汽发生器的第二种立体结构示意图；
图6是图5所示的蒸汽发生器的主视结构示意图；
图7是图5所示的蒸汽发生器的右视结构示意图；
图8是图5所示的蒸汽发生器的俯视示意图。
其中，图1至图8中附图标记与部件名称之间的对应关系为：
1 壳体，2 水管，21 第一管体，22 第二管体，23 硅胶管，3 电加热管，31 第一直管段，32 弯折段，33 第二直管段。
具体实施方式
为了能够更清楚地理解本发明的上述目的、特征和优点，下面结合附图和具体实施方式对本发明进行进一步的详细描述。需要说明的是，在不 冲突的情况下，本申请的实施例及实施例中的特征可以相互组合。
在下面的描述中阐述了很多具体细节以便于充分理解本发明，但是，本发明还可以采用其他不同于在此描述的方式来实施，因此，本发明的保护范围并不受下面公开的具体实施例的限制。
下面参照附图1至附图8描述根据本发明一些实施例提供的蒸汽发生器，其中，为了清楚显示水管及电加热管的结构，在图1至图8中，将位于壳体透明处理，并将壳体内的水管及电加热用实线表示出来，另外，在图5至8中，水管及电加热管均做透明处理。
如图1和图8所示，根据本发明一些实施例提供的一种蒸汽发生器，包括：壳体1、水管2和电加热管3，
具体地，壳体1上设置有进水口和出蒸汽口(图中未示出)，且进水口和出蒸汽口位于壳体1的不同壁面上，水管2呈螺旋状，水管2位于壳体1内，一端自进水口伸出，另一端自出蒸汽口伸出，电加热管3位于壳体1内，水管2盘绕在电加热管3上，电加热管3包括依次连接的第一直管段31、弯折段32和第二直管段33，第一直管段31与第二直管段33相互平行并位于弯折段32的同一侧，且第一直管段31和第二直管段33均伸出壳体1。
本实施例提供的蒸汽发生装置，进水口和出蒸汽口位于壳体不同的壁面上，即不在同一端，相互之间无热量的传递影响，蒸汽温度相对恒定；螺旋状的水管环绕在电加热管上，电加热管与水管之间预留极小的间隙，这样既可以近似达到两种管道直接接触的热传导率，也可以通过第三方壳体导热，同时，由于水管采用螺旋式直接环绕在电加热管上，受热管道长度较长，整个蒸汽发生器的热能利用率相对于现有产品明显提升，可有效增大气化率，提高蒸汽干燥度并改善蒸汽性能；此外，该蒸汽发生器的壳体上的温度分布特点明显，对于温控器和保险丝的感温点选取非常有利，从而使得整个蒸汽发生器的蒸汽性能能够得到良好的保障。
需要说明的是，水管采用螺旋式管道设计，存水量较少，内部压强相比同类型产品要低，且内部气压较恒定，避免了市场上常见的水槽储水式蒸汽发生器断开后蒸汽不能及时停止的现象，本蒸汽发生器在不借助其他 截断阀等设备的前提下实测关机蒸汽停止时间在3秒以内，由于进水口和出蒸汽口不同向的设计以及水管的规则螺旋排布使得发热体表面温度分布比较规则，对于温控器和保险丝的感温规格以及感温点的选取非常有利，利于调节和保护蒸汽发生器，且可有效杜绝出蒸汽口和进水口之间的热传导，保证了出蒸汽口蒸汽的蒸汽性能，蒸汽温度恒定在120℃左右，六分钟滴水量不大于10克，从而使得清洁效益得到有效保障。
优选地，水管2的直径大于等于2mm且小于等于10mm。
水管采用孔径较大的设计，可以减少因水垢或其他金属氧化物堵塞管道的风险，从而有效地延长了蒸汽发生器的使用寿命。
进一步，优选地，水管2为不锈钢水管；如图1至图8所示，壳体1为矩形壳体。
不锈钢导热性能良好，抗氧化性很强，可以减少因水垢或其他金属氧化物堵塞管道的风险，进一步延长了蒸汽发生器的使用寿命；当然，水管也可以采用其他导热性能良好，抗氧化性好的金属或合金材料。
壳体多以矩形为主，但不限定具体形状，可以根据市场需要设计其他形状，例如梯形、菱形等。
具体地，壳体1为合金壳体；
或者，壳体1为金属壳体。
金属或者合金材料的导热性能良好，可以在水管和电加热段之间进行二次热传递，有效地增大了水管的受热面积，从而提高了蒸汽发生器的热能利用率，增大了气化率，提高了蒸汽干燥度并改善了蒸汽性能。
在本发明的一个具体实施例中，如图1、图2、图3和图4所示，弯折段32呈螺旋状，水管2盘绕在第一直管段31和第二直管段33的外部。
水管和电加热段的主要部分都采用线圈螺旋环绕式设计，且水管紧绕电加热管外部，热能利用率高，同时极大地减小装配空间，易于装配于窄小空间内。
在本发明的另一个具体实施例中，如图5和图6所示，弯折段32呈W形，水管2盘绕在弯折段32的外部，并位于第一直管段31与第二直管段33之间。这样，进一步提升了水管与电加热管道之间的热传导率，从而使 得整个蒸汽发生器的热能利用率得到显著提升。
在本实施例的一个具体示例中，如图7和图8所示，壳体1上还开设有第一通孔和第二通孔(图中未示出)，第一通孔与进水口位于壳体1的同一壁面上，第二通孔与出蒸汽口位于壳体1的同一壁面上；水管2包括第一管体21和第二管体22，第一管体21的两端分别自进水口和第二通孔伸出壳体1，第二管体22的两端分别自出蒸汽口和第二通孔伸出壳体1，且自第二通孔伸出的第一管体21的端部与自第二通孔伸出的第二管体22的端部相连通。
第一管体和第二管体的端部相连通，使两水管连接形成只有一个进水口和一个出蒸汽口的单通道，第二管体的设置，增加了受热管道的长度，进一步提升了蒸汽发生器的热能利用率，从而有效增大了蒸汽发生器的气化率，并提高了蒸汽干燥度，进而有效地改善了蒸汽性能。
具体地，如图7所示，自第二通孔伸出的第一管体21的端部与自第二通孔伸出的第二管体22的端部通过硅胶管23相连通。
硅胶管导热性能较差，能有效降低裸露在蒸汽发生器壳体外部水管的热量散失。
需要说明的是，连接第一管体和第二管体的端部的也可以是其他能忍受150℃高温的耐高温管道。
综上所述，本发明提供的蒸汽发生器，包括壳体、水管和电加热管，进水口和出蒸汽口位于壳体不同的壁面上，即不在同一端，相互之间无热量的传递影响，蒸汽温度相对恒定；螺旋状的水管环绕在电加热管上，电加热管与水管之间预留极小的间隙，这样既可以近似达到两种管道直接接触的热传导率，也可以通过第三方壳体导热，同时，由于水管采用螺旋式直接环绕在电加热管上，受热管道长度较长，整个蒸汽发生器的热能利用率相对于现有产品明显提升，可有效增大气化率，提高蒸汽干燥度并改善蒸汽性能；此外，该蒸汽发生器的壳体上的温度分布特点明显，对于温控器和保险丝的感温点选取非常有利，从而使得整个蒸汽发生器的蒸汽性能能够得到良好的保障。
在本发明的描述中，术语“相连”、“连接”等均应做广义理解，例如， “连接”可以是固定连接，也可以是可拆卸连接，或一体地连接；可以是直接相连，也可以通过中间媒介间接相连。对于本领域的普通技术人员而言，可以根据具体情况理解上述术语在本发明中的具体含义。
在本发明的描述中，术语“第一”、“第二”用于描述的目的，而不能理解为指示或暗示相对重要性，除非另有明确的规定和限定。
在本说明书的描述中，术语“一个实施例”、“一些实施例”、“具体实施例”等的描述意指结合该实施例或示例描述的具体特征、结构、材料或特点包含于本发明的至少一个实施例或示例中。在本说明书中，对上述术语的示意性表述不一定指的是相同的实施例或实例。而且，描述的具体特征、结构、材料或特点可以在任何的一个或多个实施例或示例中以合适的方式结合。
以上所述仅为本发明的优选实施例而已，并不用于限制本发明，对于本领域的技术人员来说，本发明可以有各种更改和变化。凡在本发明的精神和原则之内，所作的任何修改、等同替换、改进等，均应包含在本发明的保护范围之内。

Claims (10)

  1. 一种蒸汽发生器，其特征在于，包括：
    壳体，所述壳体上设置有进水口和出蒸汽口，且所述进水口和所述出蒸汽口位于所述壳体的不同壁面上；
    水管，所述水管呈螺旋状，所述水管位于所述壳体内，一端自所述进水口伸出，另一端自所述出蒸汽口伸出；和
    电加热管，所述电加热管位于所述壳体内，所述水管盘绕在所述电加热管上，所述电加热管包括依次连接的第一直管段、弯折段和第二直管段，所述第一直管段与所述第二直管段相互平行并位于所述弯折段的同一侧，且所述第一直管段和所述第二直管段均伸出所述壳体。
  2. 根据权利要求1所述的蒸汽发生器，其特征在于，
    所述弯折段呈螺旋状，所述水管盘绕在所述第一直管段和所述第二直管段的外部。
  3. 根据权利要求1所述的蒸汽发生器，其特征在于，
    所述弯折段呈W形，所述水管盘绕在所述弯折段的外部，并位于所述第一直管段与所述第二直管段之间。
  4. 根据权利要求3所述的蒸汽发生器，其特征在于，
    所述壳体上还开设有第一通孔和第二通孔，所述第一通孔与所述进水口位于所述壳体的同一壁面上，所述第二通孔与所述出蒸汽口位于所述壳体的同一壁面上；
    所述水管包括第一管体和第二管体，所述第一管体的两端分别自所述进水口和所述第二通孔伸出所述壳体，所述第二管体的两端分别自所述出蒸汽口和所述第二通孔伸出所述壳体，且自所述第二通孔伸出的所述第一管体的端部与自所述第二通孔伸出的所述第二管体的端部相连通。
  5. 根据权利要求4所述的蒸汽发生器，其特征在于，
    自所述第二通孔伸出的所述第一管体的端部与自所述第二通孔伸出的所述第二管体的端部通过硅胶管相连通。
  6. 根据权利要求1至5中任一项所述的蒸汽发生器，其特征在于，
    所述水管的直径大于等于2mm且小于等于10mm。
  7. 根据权利要求6所述的蒸汽发生器，其特征在于，
    所述水管为不锈钢水管。
  8. 根据权利要求7所述的蒸汽发生器，其特征在于，
    所述壳体为矩形壳体。
  9. 根据权利要求8所述的蒸汽发生器，其特征在于，
    所述壳体为合金壳体。
  10. 根据权利要求8所述的蒸汽发生器，其特征在于，
    所述壳体为金属壳体。
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CN104896455A (zh) * 2015-06-26 2015-09-09 广东力新热能科技有限公司 一种快速高温蒸汽发生器
CN106555997A (zh) * 2016-11-29 2017-04-05 中山市宏善电器有限公司 一种直热式电加热蒸汽发生器
CN106614232A (zh) * 2016-12-19 2017-05-10 缪郡婷 一种智能控温养殖水循环***
CN107997569B (zh) * 2017-07-19 2023-05-26 宁波方太厨具有限公司 具有蒸汽发生器的蒸箱
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CN108534116A (zh) * 2018-06-06 2018-09-14 浙江大学 一种基于管内扰动的高效蒸汽发生器
CN109681855A (zh) * 2018-12-17 2019-04-26 佛山市顺德区美的洗涤电器制造有限公司 蒸汽发生器组件和家用电器

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