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A tube type heater for electric water heater

A technology for tubular heaters and electric water heaters, applied in the direction of fluid heaters, heating element shapes, lighting and heating equipment, etc., can solve the problems of reduced thermal efficiency, scrapped heaters, difficult production, etc., to achieve reasonable heat exchange structure, fluid Fast heat exchange and simple structure

Inactive Publication Date: 2008-04-23
奥特朗电器(广州)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004]1. The heater is cylindrical and the water heater is thicker
[0005]2. The water stays in the heater for a short time, and the convective heat transfer effect is poor. Heat Exchange Efficiency of Heater
[0006]3. There is more water in the heater, making the heating speed slower
[0007]4. The shell and electric heating tube of the heater are made of metal materials, and there are many solder joints, which is not only difficult to manufacture, but also prone to water leakage
[0008]5. The shell of the heater and the electric heating tube are welded into a whole. If one electric heating tube is damaged, the entire heater will be scrapped, which is costly
[0009]6. The electric heating tube of the heater adopts U-shaped or spiral electric heating tube. The manufacturing process of the electric heating tube is complicated, and the electrical performance is worse than that of the straight tube.
[0010]7. The electric heating tube of the heater is prone to scale and corrosion when soaked in water for a long time, resulting in a decrease in thermal efficiency and even breakdown
[0011] Chinese patent (application number: 200520073249.1) "an electric water heater" proposes a heat-absorbing plate composed of a rectangular metal heat-absorbing tube and a flat electric heating plate The technical scheme of the electric water heater combined with the body, this scheme completely overcomes the above-mentioned shortcomings of the electric water heater heater, and its disadvantage is that the structure of the heat absorbing plate and the flat electric heating element is relatively complicated, and the manufacturing cost is high

Method used

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  • A tube type heater for electric water heater
  • A tube type heater for electric water heater
  • A tube type heater for electric water heater

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0054] Referring to Fig. 2a and Fig. 2b, a heater for an electric water heater proposed by the present invention includes a heat exchange body and an electric heating tube 2. A metal pipe is used as the fluid passage pipe 1, and the two ends of the heating pipe 3 are cut off to leave pipe joints 11 and 12 at both ends of the fluid passage pipe 1, and a straight electric heating pipe 2 is installed in the heating pipe 3 to form a single heating straight pipe structure.

[0055] The method of use is as follows: the electrodes 21 at both ends of the electric heating tube 2 are connected to the control circuit, the pipe joints 11 and 12 are respectively connected to the running water pipe and the shower or the faucet, and the water heater function is realized by the switch and the temperature control device on the control circuit.

Embodiment 2

[0057]Referring to Fig. 3a and Fig. 3b, a heater for an electric water heater proposed by the present invention includes a heat exchanging body and an electric heating tube 2, the heat exchanging body is a conjoined three-metal tube, and one of the metal tubes is used as a fluid passage tube 1, The other two metal pipes are used as the heating pipe 3, and the two ends of the heating pipe 3 are cut off to leave the pipe joints 11 and 12 at the two ends of the fluid channel pipe 1, and the electric heating pipe 2 is installed in the heating pipe 3 to form a double parallel heating straight pipe structure.

[0058] The method of use is the same as the examples.

Embodiment 3

[0060] Referring to Figure 4a and Figure 4b, a heater for an electric water heater proposed by the present invention includes a heat exchange body and an electric heating tube 2. The structure of the heat exchange body is the same as that of Embodiment 1, which is a connected bimetallic tube, one of which The metal pipe is used as the heating pipe 3, and the other metal pipe is used as the fluid passage pipe 1. Cut off the two ends of the heating pipe 3 so that the pipe joints 11 and 12 are left at the two ends of the fluid passage pipe 1, and cut off a section in the middle of the heating pipe 3. , the fluid channel tube 1 is bent into a U-shaped tube structure, and two straight electric heating tubes 2 are respectively installed in the segmented heating tubes 3 to form a double-string heating U-shaped tube structure.

[0061] The method of use is the same as the examples.

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Abstract

The disclosed tubular heater in use for electric water heater (EWH) includes heat exchange unit (HEU) and heating unit (HU). HEU is in metal multiple tube structure, in which at least one piece of tube is heating tube for the heating unit to be placed, and at least one piece of tube is as liquid passage tube (LPT). Tube connectors are setup at two ends of LPT. The heating tube can be in multiple tube structure for more than one HU to be installed in. HU can be bent to U shape, square shape, snake shape etc. Advantages are: (1) producing smaller EWH; (2) simple structure of HU, easy producing and low cost; (3) LPT is continuous tube without soldered dot so as to not produce leaking phenomena; (4) reasonable heat exchanging structure, and high thermal efficiency; (5) being not contacted to liquid, electric heating tube (EHT) is not be eroded, generates scale, and has long service life; (6) being in U shape or straight tube shape, EHT possesses low factory cost and steady quality.

Description

technical field [0001] The invention relates to the technical field of electric water heaters. Especially electric heaters. Background technique [0002] The instant electric water heater is one of the water heaters widely used in households because of its small size, fast heating, and energy saving. The instant electric water heater is mainly composed of three parts: the shell, the control circuit and the heater. As shown in Figure 1, the device is composed of a shell 1 and an electric heating tube 2. The electric heating tube 2 is inserted into the shell 1. One end of the shell 1 is provided with a water inlet and connected to the water inlet pipe 11. The other end of the shell 1 is provided with an outlet. The water outlet is connected to the water outlet pipe 12. Cold water enters the casing 1 from the water inlet pipe 11 and exchanges heat with the hot electric heating pipe 2. After heat exchange, it becomes hot water and flows out from the water outlet pipe 12 for the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H05B3/48F24H9/18
Inventor 冯俊
Owner 奥特朗电器(广州)有限公司
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