CN105987511A - Electric water heater heating device and electric water heater - Google Patents
Electric water heater heating device and electric water heater Download PDFInfo
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- CN105987511A CN105987511A CN201510089841.9A CN201510089841A CN105987511A CN 105987511 A CN105987511 A CN 105987511A CN 201510089841 A CN201510089841 A CN 201510089841A CN 105987511 A CN105987511 A CN 105987511A
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- 238000010438 heat treatment Methods 0.000 title claims abstract description 111
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 95
- 238000005485 electric heating Methods 0.000 claims abstract description 53
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 claims abstract description 11
- 229910010293 ceramic material Inorganic materials 0.000 claims description 3
- 238000009434 installation Methods 0.000 claims description 3
- 238000004140 cleaning Methods 0.000 abstract description 4
- 239000000919 ceramic Substances 0.000 description 4
- 229910001220 stainless steel Inorganic materials 0.000 description 3
- 239000010935 stainless steel Substances 0.000 description 3
- 238000009825 accumulation Methods 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 238000004904 shortening Methods 0.000 description 2
- 241000233855 Orchidaceae Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005489 elastic deformation Effects 0.000 description 1
- 238000005538 encapsulation Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
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Abstract
本发明公开了一种电热水器加热装置及电热水器，涉及电热水器技术领域。该电热水器加热装置包括受热后可形变的电热丝，所述电热丝与外部电源连接；还包括至少一对绝缘支撑体，每对所述绝缘支撑体上均缠绕一根所述电热丝，所述电热丝与热水器内胆内的水直接接触，用于对所述内胆内的水进行加热。本发明还公开了一种包括外壳、内胆、进水管、出水管和镁棒，还包括如上所述的电热水器加热装置的电热水器。本发明的电热水器加热装置结构简单，实现了水垢的自清理，不仅提高了其加热效率，而且延长了使用寿命。
The invention discloses a heating device for an electric water heater and the electric water heater, and relates to the technical field of the electric water heater. The heating device of the electric water heater includes a heating wire deformable after being heated, and the heating wire is connected to an external power supply; it also includes at least one pair of insulating supports, and each pair of insulating supports is wound with one of the heating wires, so The electric heating wire is in direct contact with the water in the inner tank of the water heater, and is used to heat the water in the inner tank. The invention also discloses an electric water heater comprising a shell, an inner tank, a water inlet pipe, a water outlet pipe and a magnesium rod, and also includes the electric water heater heating device as described above. The electric water heater heating device of the invention has a simple structure, realizes self-cleaning of scale, not only improves its heating efficiency, but also prolongs its service life.
Description
技术领域technical field
本发明涉及电热水器技术领域，尤其涉及一种电热水器加热装置及具有该电热水器加热装置的电热水器。The invention relates to the technical field of electric water heaters, in particular to an electric water heater heating device and an electric water heater provided with the electric water heater heating device.
背景技术Background technique
目前，现有技术的电热水器加热管普遍采用镁粉和不锈钢管的封装式结构，该结构主要是将电热丝封装在镁粉里，该加热管的表面积较大，且不易产生物理形变，其热胀冷缩现象也不明显。由于该加热管在工作时，其表面温度过高，使水垢容易集结于加热管的表面，导致电热水器的加热效率下降，电热水器的使用寿命缩短。At present, the heating tube of the electric water heater in the prior art generally adopts the encapsulation structure of magnesium powder and stainless steel tube. This structure mainly encapsulates the heating wire in the magnesium powder. Thermal expansion and contraction are also not obvious. Because the surface temperature of the heating pipe is too high when it is working, scale is easy to accumulate on the surface of the heating pipe, resulting in a decrease in the heating efficiency of the electric water heater and a shortened service life of the electric water heater.
基于以上描述，亟需要一种新的电热水器加热装置，以解决现有电热水器存在的加热效率低，使用寿命短的问题。Based on the above description, there is an urgent need for a new electric water heater heating device to solve the problems of low heating efficiency and short service life of existing electric water heaters.
发明内容Contents of the invention
本发明的一个目的在于提出一种结构简单，能够实现水垢的自清理，加热效率高，使用寿命长的电热水器加热装置。An object of the present invention is to provide a heating device for an electric water heater with simple structure, self-cleaning of scale, high heating efficiency and long service life.
本发明的另一个目的在于提出一种包括如上所述的电热水器加热装置的电热水器。Another object of the present invention is to provide an electric water heater comprising the above electric water heater heating device.
为达此目的，本发明采用以下技术方案：For reaching this purpose, the present invention adopts following technical scheme:
本发明提供了一种电热水器加热装置，所述电热水器加热装置包括受热后可形变的电热丝，所述电热丝与外部电源连接；The invention provides a heating device for an electric water heater. The heating device for the electric water heater includes a heating wire which can be deformed after being heated, and the heating wire is connected to an external power supply;
还包括至少一对绝缘支撑体，每对所述绝缘支撑体上均缠绕一根所述电热丝，所述电热丝与热水器内胆内的水直接接触，用于对所述内胆内的水进行加热。It also includes at least one pair of insulating supports, each pair of insulating supports is wound with one of the heating wires, and the heating wires are in direct contact with the water in the inner tank of the water heater, and are used for cooling the water in the inner tank. for heating.
作为一种优选方案，所述绝缘支撑体采用陶瓷材料制作。As a preferred solution, the insulating support body is made of ceramic material.
作为一种优选方案，所述绝缘支撑体的内部设置有电热芯，所述电热芯用于绝缘支撑体的安装，所述电热芯连接有电源线，并用于为所述电热丝供电。As a preferred solution, an electric heating core is arranged inside the insulating support body, the electric heating core is used for installing the insulating support body, the electric heating core is connected with a power line, and is used for supplying power to the electric heating wire.
作为一种优选方案，所述电热芯上设置有接线柱，所述电热丝通过接线柱与所述电热芯导通。As a preferred solution, the electric heating core is provided with a terminal, and the electric heating wire conducts with the electric heating core through the terminal.
作为一种优选方案，所述电热丝呈螺旋状缠绕在一对所述绝缘支撑体上。As a preferred solution, the heating wire is helically wound on a pair of the insulating supports.
作为一种优选方案，所述电热芯与所述绝缘支撑体一体封装成型或连接一体。As a preferred solution, the electric heating core and the insulating support body are integrally packaged and molded or connected together.
作为一种优选方案，所述电热芯通过连接件固定安装在所述内胆封头的法兰上。As a preferred solution, the electric heating core is fixedly installed on the flange of the inner tank head through a connecting piece.
作为一种优选方案，所述电热芯与所述法兰的接触面上设置有绝缘垫。As a preferred solution, an insulating pad is provided on the contact surface between the electric heating core and the flange.
作为一种优选方案，所述电热芯与所述法兰之间设置有密封垫。As a preferred solution, a gasket is provided between the electric heating core and the flange.
本发明还提供了一种电热水器，包括外壳、内胆、进水管、出水管和镁棒，还包括如上任一项所述的电热水器加热装置。The present invention also provides an electric water heater, which includes a casing, an inner tank, a water inlet pipe, a water outlet pipe and a magnesium rod, and also includes the electric water heater heating device as described in any one of the above items.
本发明的有益效果为：The beneficial effects of the present invention are:
本发明提供了一种电热水器加热装置，该电热水器加热装置包括受热后可形变的电热丝，所述电热丝与外部电源连接；还包括至少一对绝缘支撑体，每对所述绝缘支撑体上均缠绕一根所述电热丝，所述电热丝与热水器内胆内的水直接接触，用于对所述内胆内的水进行加热。本发明的电热丝直接设置于电热水器内胆内的水体中，不通过镁粉、不锈钢管向水体传热，而直接对水进行加热，由于电热丝具有可弹性形变的特性，在通断电时，电热丝外形改变明显，从而使电热丝表面的水垢在电热丝形变力的作用下自行脱落，保护电热丝免于因水垢的集结而造成加热效率的降低和使用寿命的缩短，本发明的电热水器加热装置结构简单，实现了水垢的自清理，不仅提高了其加热效率，而且延长了使用寿命。The invention provides a heating device for an electric water heater. The heating device for an electric water heater includes a heating wire which can be deformed after being heated, and the heating wire is connected to an external power supply; Each of them is wound with one heating wire, and the heating wire is in direct contact with the water in the inner tank of the water heater, and is used to heat the water in the inner tank. The heating wire of the present invention is directly installed in the water body in the inner tank of the electric water heater, and does not transfer heat to the water body through magnesium powder or stainless steel tubes, but directly heats the water. , the shape of the heating wire changes significantly, so that the scale on the surface of the heating wire falls off automatically under the action of the deformation force of the heating wire, and protects the heating wire from the reduction of heating efficiency and the shortening of the service life caused by the accumulation of scale. The heating device of the electric water heater has a simple structure, realizes self-cleaning of scale, not only improves its heating efficiency, but also prolongs its service life.
本发明还提供了一种包括外壳、内胆、进水管、出水管、镁棒和以上所述电热水器加热装置的电热水器，该电热水器不仅加热效率高，而且使用寿命长。The present invention also provides an electric water heater comprising a casing, an inner tank, a water inlet pipe, a water outlet pipe, a magnesium rod and the above electric water heater heating device. The electric water heater not only has high heating efficiency, but also has a long service life.
附图说明Description of drawings
为了更清楚地说明本发明实施例中的技术方案，下面将对本发明实施例描述中所需要使用的附图作简单的介绍，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，还可以根据本发明实施例的内容和这些附图获得其他的附图。In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following will briefly introduce the accompanying drawings that need to be used in the description of the embodiments of the present invention. Obviously, the accompanying drawings in the following description are only some embodiments of the present invention , for those skilled in the art, other drawings can also be obtained according to the content of the embodiment of the present invention and these drawings without any creative effort.
图1是本发明优选实施例提供的电热水器的结构示意图；Fig. 1 is a schematic structural view of an electric water heater provided by a preferred embodiment of the present invention;
图2是本发明优选实施例提供的电热水器加热装置的装配图；Fig. 2 is an assembly drawing of the electric water heater heating device provided by the preferred embodiment of the present invention;
图3是本发明优选实施例提供的电热水器加热装置的分解图。Fig. 3 is an exploded view of the electric water heater heating device provided by the preferred embodiment of the present invention.
图中，1、电热丝；2、内胆；3、绝缘支撑体；4、电热芯；5、法兰；6、绝缘垫；7、连接件；8、密封垫；9、进水管；10、出水管；11、镁棒；12、外壳；In the figure, 1. heating wire; 2. liner; 3. insulating support; 4. heating core; 5. flange; 6. insulating pad; 7. connector; 8. gasket; 9. water inlet pipe; , Outlet pipe; 11, Magnesium rod; 12, Shell;
40、首电热芯；41、首接线柱；42、尾电热芯；43、尾接线柱。40. The first electric heater; 41. The first terminal; 42. The tail electric heater; 43. The last terminal.
具体实施方式detailed description
为使本发明解决的技术问题、采用的技术方案和达到的技术效果更加清楚，下面将结合附图对本发明实施例的技术方案作进一步的详细描述，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。In order to make the technical problems solved by the present invention, the technical solutions adopted and the technical effects achieved clearer, the technical solutions of the embodiments of the present invention will be further described in detail below in conjunction with the accompanying drawings. Obviously, the described embodiments are only the technical solutions of the present invention. Some, but not all, embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative efforts fall within the protection scope of the present invention.
优选实施例preferred embodiment
本实施例提供了一种电热水器加热装置，该电热水器加热装置可应用于电热水器中，该电热水器的结构如图1所示，该电热水器包括外壳12、内胆2、进水管9、出水管10和镁棒11，其中，进水管9、出水管10和镁棒11均由内胆2的底部伸入内胆2内，内胆2的封头上安装有法兰5，还包括该实施例所述的电热水器加热装置。该电热水器不仅能够提高其加热效率，而且延长了电热水器的使用寿命。This embodiment provides a heating device for an electric water heater. The heating device for an electric water heater can be applied to an electric water heater. The structure of the electric water heater is shown in FIG. The water outlet pipe 10 and the magnesium rod 11, wherein, the water inlet pipe 9, the water outlet pipe 10 and the magnesium rod 11 all extend into the inner tank 2 from the bottom of the inner tank 2, and a flange 5 is installed on the head of the inner tank 2, and includes The electric water heater heating device described in this embodiment. The electric water heater can not only improve its heating efficiency, but also prolong the service life of the electric water heater.
本实施例的电热水器加热装置的结构如图2和图3所示，它包括可弹性形变的电热丝1，电热丝1与外部电源连接；还包括至少一对绝缘支撑体3，每对所述绝缘支撑体3上均缠绕一根所述电热丝1，所述电热丝1与热水器内胆2内的水直接接触，用于对所述内胆2内的水进行加热。The structure of the electric water heater heating device of this embodiment is shown in Figure 2 and Figure 3, and it comprises elastically deformable heating wire 1, and heating wire 1 is connected with external power supply; One of the heating wires 1 is wound on each of the insulating supports 3 , and the heating wire 1 is in direct contact with the water in the inner tank 2 of the water heater, and is used for heating the water in the inner tank 2 .
本申请的电热丝1不加封装，直接设置于电热水器内胆2内的水体中，不通过镁粉、不锈钢管向水体传热，而直接对水进行加热，因电热丝1具有可弹性形变的特性，在通断电时，电热丝1的外形改变明显，从而使电热丝1表面的水垢在电热丝1形变力的作用下自行脱落，保护电热丝1免于因水垢的集结而造成加热效率的降低和使用寿命的缩短，本申请的电热水器加热装置结构简单，实现了水垢的自清理，不仅提高了其加热效率，而且延长了使用寿命。The heating wire 1 of the present application is not packaged, and is directly installed in the water body in the inner tank 2 of the electric water heater, and does not transfer heat to the water body through magnesium powder or stainless steel tubes, but directly heats the water, because the heating wire 1 has elastic deformation properties. When the power is turned on and off, the shape of the heating wire 1 changes significantly, so that the scale on the surface of the heating wire 1 falls off automatically under the action of the deformation force of the heating wire 1, and protects the heating wire 1 from being heated due to the accumulation of scale The reduction of efficiency and the shortening of service life, the electric water heater heating device of the present application has a simple structure, realizes the self-cleaning of scale, not only improves its heating efficiency, but also prolongs its service life.
于本实施例中，作为优选方案，电热丝1具有弹性结构，并呈螺旋状缠绕在一对绝缘支撑体3上，即两个绝缘支撑体3，且电热丝1缠绕在两个绝缘支撑体3上的长度小于绝缘支撑体3的总长度。该电热丝的这种缠绕方式增大了电热丝与水的接触表面积，从而有效提高了电热丝的加热效率。In this embodiment, as a preferred solution, the heating wire 1 has an elastic structure and is spirally wound on a pair of insulating supports 3, that is, two insulating supports 3, and the heating wire 1 is wound on the two insulating supports 3 is less than the total length of the insulating support body 3. The winding manner of the heating wire increases the contact surface area between the heating wire and water, thereby effectively improving the heating efficiency of the heating wire.
于本实施例中，绝缘支撑体3采用陶瓷材料制作，也就是说，绝缘支撑体3可以为陶瓷棒，一方面，由于陶瓷棒绝缘性好，耐腐蚀，因此，不仅使用安全可靠，使用寿命长，而且对水质无污染；另一方面，陶瓷棒可以作为发热体，其受热散热面积大，因此，陶瓷棒的热效率高，节约电能，降低使用成本。In this embodiment, the insulating support body 3 is made of ceramic material, that is to say, the insulating support body 3 can be a ceramic rod. On the one hand, because the ceramic rod has good insulation and corrosion resistance, it is not only safe and reliable in use, but also has a long service life. It is long and has no pollution to water quality; on the other hand, ceramic rods can be used as heating elements, and their heating and cooling areas are large. Therefore, ceramic rods have high thermal efficiency, save electric energy, and reduce use costs.
于本实施例中，作为优选方案，为了方便安装绝缘支撑体3，两个绝缘支撑体3的内部均设置有电热芯4，每个电热芯4的一端分别通过连接件7固定安装在内胆2封头的法兰5上。此外，为了增强结构强度，每个电热芯4与成套配置的绝缘支撑体3可封装成型形成一体结构，或者通过装配，紧密可靠地连接形成一体结构。如此，实现了电热芯4和绝缘支撑体3的固定安装。In this embodiment, as a preferred solution, in order to facilitate the installation of the insulating support body 3, the interior of the two insulating support bodies 3 are provided with electric heating cores 4, and one end of each electric heating core 4 is respectively fixed and installed in the inner tank through the connecting piece 7 2 on the flange 5 of the head. In addition, in order to enhance the structural strength, each electric heating core 4 and the insulating support body 3 configured as a set can be packaged and molded to form an integrated structure, or can be tightly and reliably connected to form an integrated structure through assembly. In this way, the fixed installation of the electric heating core 4 and the insulating support body 3 is realized.
于本实施例中，具体的，如图2和图3所示，两个电热芯4为首电热芯40和尾电热芯42，伸出内胆2的首电热芯40和尾电热芯42的一端分别连接有用于为电热丝1供电的外部电源线，首电热芯40上设置有首接线柱41，尾电热芯42上设置有尾接线柱43，电热丝1的首端连接首电热芯40上的首接线柱41，其尾端连接尾电热芯42上的尾接线柱43，整个电热丝1则呈螺旋状缠绕在分别安装于首电热芯40和尾电热芯42上的两个绝缘支撑体3上。如此，电热丝1与首电热芯40和尾电热芯42形成电路上的导通连接。In this embodiment, specifically, as shown in FIG. 2 and FIG. 3 , the two electric heating cores 4 are the first electric heating core 40 and the tail electric heating core 42 , and one end of the first electric heating core 40 and the tail electric heating core 42 protrudes from the inner tank 2 The external power lines used to supply power to the heating wire 1 are respectively connected, the first electric heating core 40 is provided with a first terminal 41, the tail electric heating core 42 is provided with a tail terminal 43, and the head end of the electric heating wire 1 is connected to the first electric heating core 40 The first terminal 41 of the first terminal is connected to the terminal terminal 43 on the tail electric heating core 42, and the entire heating wire 1 is wound in a spiral shape on two insulating supports respectively installed on the first electric heating core 40 and the tail electric heating core 42. 3 on. In this way, the heating wire 1 forms a conductive connection on the circuit with the first heating core 40 and the tail heating core 42 .
于本实施例中，作为优选方案，电热芯4与法兰5的接触面上设置有绝缘垫6，可以有效防止电热芯4与法兰5之间导通，避免法兰5带电而造成一定的安全隐患，提高了使用的安全可靠性。In this embodiment, as a preferred solution, an insulating pad 6 is provided on the contact surface between the heating core 4 and the flange 5, which can effectively prevent the conduction between the heating core 4 and the flange 5, and prevent the flange 5 from being electrified and causing a certain Potential safety hazards, improving the safety and reliability of use.
于本实施例中，作为优选方案，电热芯4与法兰5之间设置有密封垫8，可以有效防止电热芯4与法兰5进行套接时法兰孔出现漏水。In this embodiment, as a preferred solution, a gasket 8 is provided between the heating core 4 and the flange 5, which can effectively prevent water leakage from the flange hole when the heating core 4 and the flange 5 are socketed.
于本实施例中，上述的连接件7优选结构简单、制造成本低的螺母，螺母将电热芯4与法兰5进行紧密连接，有效防止了密封垫8松动漏水，防止了电热芯4从法兰5上脱落下来。In this embodiment, the above-mentioned connecting piece 7 is preferably a nut with simple structure and low manufacturing cost. The nut tightly connects the heating core 4 and the flange 5, effectively preventing the gasket 8 from loosening and leaking water, and preventing the heating core 4 from coming out of the way. Orchid 5 falls off.
本实施例中的绝缘支撑体3、电热芯4、绝缘垫6、密封垫8及连接件7等部件成套配置，也就是说，本实施例具有两套配置结构，该两套配置结构使电热丝1易于在法兰5的同一侧引入电源接入端。In this embodiment, the insulating support body 3, the electric heating core 4, the insulating pad 6, the sealing pad 8 and the connector 7 are arranged in a complete set. The wire 1 is easily introduced into the power inlet on the same side as the flange 5 .
本申请中的电热水器加热装置不局限于设置一对绝缘支撑体，还可以设置两对或三对等数量，每个绝缘支撑体内部均设置一个电热芯，每个所述电热芯的一端分别通过一连接件固定安装在内胆封头的法兰上。每对绝缘支撑体上均缠绕一根电热丝，且每根电热丝与外部电源连接。The electric water heater heating device in the present application is not limited to a pair of insulating supports, but also can be provided with two pairs or three pairs of equal numbers, each insulating support is equipped with an electric heating core, and one end of each electric heating core is respectively It is fixedly installed on the flange of the inner tank head through a connecting piece. Each pair of insulating supports is wound with a heating wire, and each heating wire is connected to an external power source.
优选的，每对绝缘支撑体的两个绝缘支撑体内的电热芯分别连接外部电源线，用于为电热丝供电。Preferably, the electric heating cores in the two insulating support bodies of each pair of insulating support bodies are respectively connected to external power lines for powering the electric heating wires.
优选的，每对绝缘支撑体的其中一个绝缘支撑体内的电热芯通过此电热芯上设置的接线柱与电热丝的一端导通，另一个绝缘支撑体内的电热芯通过该电热芯上设置的接线柱与电热丝的另一端导通，而电热丝整体呈螺旋状缠绕在两个绝缘支撑体上。Preferably, the electric heating core in one of the insulating supports of each pair of insulating supports is connected to one end of the electric heating wire through the terminal post provided on the electric heating core, and the electric heating core in the other insulating support is connected to one end of the electric heating wire through the wiring provided on the electric heating core. The column is connected to the other end of the heating wire, and the heating wire is helically wound on two insulating supports as a whole.
优选的，为了防止电热芯与法兰之间导通，提高安全使用性，每个电热芯与法兰的接触面上均设置有一个绝缘垫。Preferably, in order to prevent conduction between the heating core and the flange and improve the safety and usability, an insulating pad is provided on the contact surface between each heating core and the flange.
优选的，为了防止电热芯与法兰进行套接时法兰孔出现漏水，每个电热芯与法兰之间均设置有一个密封垫。Preferably, in order to prevent water leakage from the flange hole when the electric heating core is socketed with the flange, a gasket is arranged between each electric heating core and the flange.
本申请中的绝缘支撑体、电热芯、绝缘垫、密封垫及连接件等部件成套配置，各部件的数量可根据实际工作需要进行设置，只要满足能够提高加热效率，延长使用寿命，又能够降低生产成本的要求即可。In this application, the insulating support body, electric heating core, insulating pad, sealing pad and connectors and other components are configured in a complete set. The number of each component can be set according to actual work needs. production cost requirements.
注意，上述仅为本发明的较佳实施例及所运用技术原理。本领域技术人员会理解，本发明不限于这里所述的特定实施例，对本领域技术人员来说能够进行各种明显的变化、重新调整和替代而不会脱离本发明的保护范围。因此，虽然通过以上实施例对本发明进行了较为详细的说明，但是本发明不仅仅限于以上实施例，在不脱离本发明构思的情况下，还可以包括更多其他等效实施例，而本发明的范围由所附的权利要求范围决定。Note that the above are only preferred embodiments of the present invention and applied technical principles. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and that various obvious changes, readjustments and substitutions can be made by those skilled in the art without departing from the protection scope of the present invention. Therefore, although the present invention has been described in detail through the above embodiments, the present invention is not limited to the above embodiments, and can also include more other equivalent embodiments without departing from the concept of the present invention, and the present invention The scope is determined by the scope of the appended claims.
Claims (10)
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| CN201510089841.9A CN105987511A (en) | 2015-02-27 | 2015-02-27 | Electric water heater heating device and electric water heater |
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