CN205048741U - Electric water heater capable of accumulating heat - Google Patents

Abstract

The utility model relates to an electric water heater capable of accumulating heat. Tradition electric water heater capable of accumulating heat's heating tube directly soaks in aqueous inside placing the water tank in being in, and heat transfer area is little, and the thermal conversion rate is hanged down, easily ties the incrustation scale. In the long -time back of using, the incrustation scale is tied thicker and thicker, and heat conduction is more and more slower, leads to the heating tube high temperature and the defect that burns out. The utility model discloses an outer bucket and inner bag, its characterized in that inner bag cavity do not establish the heating tube, the outer wall setting of the inner bag module of generating heat, set up the heat preservation between the module of generating heat and the outer bucket. The utility model discloses a shielding formula flat electric heating cable coils the outer wall at inner water tank, and with the water contactless, it is big to have a heat transfer area, advantages such as heat transformation rate height. The long -time back of using can not produce the incrustation scale yet, and heat conduction is fast, long service life.

Description

A kind of heat storage electric water heater

Technical field

The utility model relates to a kind of heat storage electric water heater.

Background technology

The heat-generating pipe of tradition heat storage electric water heater is built in water tank inside, and be directly immersed in water, heat transfer area is little, and thermal conversion rate is low, easy scaling.After a long time use, incrustation scale is tied thicker and thicker, and heat conduction is more and more slower, causes heat-generating pipe temperature too high and the defect that burns out.

Utility model content

The utility model, for the problems referred to above, provides a kind of heat storage electric water heater, and heat transfer area is large, and heat conversion ratio is high, use safety, and the life-span is long.

For this reason, the utility model takes following technical scheme, a kind of heat storage electric water heater, comprise outer barrel and inner bag, it is characterized in that described inner bag hollow does not establish heat-generating pipe, the outer wall of described inner bag arranges heating module, arranges heat-insulation layer between described heating module and outer barrel.

Described heating module is protected type flat heating cable.

The bottom of described outer barrel arranges cooling water inlet, and the top of described outer barrel arranges hot water outlet.

The utility model adopts protected type flat heating cable to be coiled in inner water tank outer wall, does not contact, have heat transfer area large, heat conversion ratio advantages of higher with water.After long-time use, also can not produce incrustation scale, heat conduction is fast, long service life.

Accompanying drawing explanation

Fig. 1 is Facad structure schematic diagram of the present utility model.

Detailed description of the invention

Below in conjunction with specific embodiment, set forth the utility model further.

A kind of heat storage electric water heater as shown in Figure 1, comprise outer barrel 3 and inner bag 2, inner bag hollow does not establish heat-generating pipe, and the outer wall of inner bag arranges heating module, arranges heat-insulation layer 4 between heating module and outer barrel.Heating module is preferably protected type flat heating cable 5.The bottom of outer barrel connects relief valve 6 by water pipe and connects cooling water inlet through anti-electricity wall 7, and outer barrel is attached across anti-electricity wall 1 by water pipe and connects hot water outlet.

Utility model works principle is as follows: when the heating of heating cable energising feed-tank inner bladder outer wall → by wall of inner container heat transfer feedwater heating → water according to hydro-thermal toward the principle floated formed up and down micro-follow to exchange whole bucket water is heated.Adopt protected type flat heating cable to be coiled in inner water tank outer wall, do not contact with water, and heat transfer area is large, heat conversion ratio advantages of higher.

Should be understood that these embodiments are only not used in restriction scope of the present utility model for illustration of the utility model.In addition should be understood that those skilled in the art can make various changes or modifications the utility model, and these equivalent form of values fall within the application's appended claims limited range equally after the content of having read the utility model instruction.

Claims (3)

1. a heat storage electric water heater, comprises outer barrel and inner bag, and it is characterized in that described inner bag hollow does not establish heat-generating pipe, the outer wall of described inner bag arranges heating module, arranges heat-insulation layer between described heating module and outer barrel.

2. a kind of heat storage electric water heater according to claim 1, is characterized in that described heating module is protected type flat heating cable.

3. a kind of heat storage electric water heater according to claim 1 and 2, it is characterized in that the bottom of described outer barrel arranges cooling water inlet, the top of described outer barrel arranges hot water outlet.