CN2199480Y - Electric water heater - Google Patents

Abstract

An electric water heater comprises a water storage pipe, an electric-heat wire, an insulation porcelain sleeve, a connecting box, an outer cover, etc. The water storage pipe is composed of three kinds of thin wall metal pipes with different diameters being packed, the three kinds of thin wall metal pipes with different diameters are arranged in parallel multiple rows, the upper and lower ends of the outer layer pipe and the middle layer pipe are closed, the connecting pipe is connected between the outer layer pipes and the middle layer pipes in each row of water storage pipe, and the middle layer pipe of the water storage pipe in the first row is connected with the outer layer pipe of the water storage pipe in the last row by the connecting pipe. The electric-heat wire packed with the insulation porcelain sleeve orderly passes through the inner layer pipe of the water storage pipe to and fro, and both ends of the electric-heat wire are connected in the connecting box. The upper ends of the outer layer pipe and the middle layer pipe in outer row of water storage pipe are respectively equipped with an inlet-water pipe joint and an outlet-water pipe joint, the component is equipped in the outer cover, and the outer cover is filled with the heat insulating powder. The water heater has quick temperature rise, high heat efficiency, no electric leakage and stronger competitive power of in marketplace.

Description

Electric water heater

The utility model relates to a kind of household electrical appliance, is a kind of electrothermal heater specifically.

Water heater commonly used has two types of combustion gas, electric heating.Gas heater is to be heat energy with the imflammable gas, and after the gas combustion, discharge section waste gas and pernicious gas so use such water heater, need to consider the position of its installation and the smoothness of room air.Moreover such water heater needs often to change gas cylinder, wastes time and energy.Used electrothermal heater takes on a new look to some extent to above-mentioned aspect, but the temperature rise time of water is long, and the thermal efficiency is low, and leaky is serious, thereby fails extensively to popularize.

The purpose of this utility model is, a kind of thermal efficiency height is provided, and the temperature rise of water is fast, and the electrothermal heater of good insulation preformance overcomes above-mentioned deficiency.

Its embodiment is that this electrothermal heater is made up of water pipe, heating wire, insulated porcelain sleeve, terminal box and outer cover.Water pipe is parallel at least four row arranges, and every row water pipe is dressed up by the thin metallic tubd cover of three different-diameters, it is outer, in the upper and lower side sealing of two-layer pipe.Between the outer tube of every row water pipe and outer tube, middle tube and the middle tube, be communicated with through tube connector successively.The middle tube of first water pipe is communicated with through tube connector with the outer tube of tail row water pipe.Wrap up in the heating wire that packages insulated porcelain sleeve, back and forth from the inner tube of every row water pipe, pass successively, the binding post in its two ends connecting line box.In the upper end of first its outer tube of water pipe, device has an admitting pipe joint, and in the upper end of its middle tube of tail row water pipe, device has a titting water outlet.Said modules is packed in the outer cover, and in outer cover, fill full heat-insulation and heat-preservation powder.

Electrothermal heater of the present utility model, water pipe is the setting of multiple row multilayer, makes its interior water of flowing through be able to twice heating, thereby has improved the thermal efficiency, has quickened the intensification of water.Heating wire is set with insulated porcelain sleeve outward, makes the leaky remarkable improvement.So this electrothermal heater has the stronger market competitiveness.

Concrete structure of the present utility model is provided by following examples and accompanying drawing thereof.

Fig. 1 is the main cutaway view according to the electrothermal heater who the utility model proposes.

The details that following index map 1 describes in detail according to the concrete electrothermal heater who the utility model proposes.

This electrothermal heater comprises water pipe ［ 1 ］, heating wire ［ 2 ］, insulated porcelain sleeve ［ 3 ］, terminal box ［ 4 ］, outer cover ［ 5 ］.Water pipe is parallel four row arranges, and every row water pipe is dressed up by the thin-wall copper pipe cover that diameter is respectively 12mm, 16mm, 25mm, and the upper and lower side of outer tube and middle tube is through welded closure.Between the outer tube of every row water pipe, be communicated with through tube connector successively between the middle tube, the middle tube of left column water pipe is communicated with tube connector with the outer tube of right row water pipe.An admitting pipe joint ［ 6 ］ is welded in the upper end of its outer tube of left column water pipe, and a titting water outlet ［ 7 ］ is welded in the upper end of right its middle tube of row water pipe.Wrap up in the heating wire that packages insulated porcelain sleeve, back and forth from the inner tube of every row storage pipe, pass the binding post in its two ends connecting line box successively.The above-mentioned assembly that connects is packed in the rectangle outer cover, and in outer cover, fill full sulfuric acid aluminium powder, be electrothermal heater of the present utility model.Its installation is: this water heater is suspended on the wall, and the terminal box lead-in wire connects the 220V power supply, and the admitting pipe joint skirt connects feed pipe.Opening program is: open the control valve on the feed pipe, water flows in the outer tube of each row water pipe in the outer tube of left column water pipe from left to right, again in the outer tube of right row water pipe, flow in the middle tube of left column water pipe, then in the middle tube of left column water pipe, flow into from left to right in the middle tube of each row water pipe again.Open the power switch on the terminal box, the heating wire heating power after 20～40 seconds, is opened the control valve on the titting water outlet front end drainpipe, can discharge the hot water about 55 ℃ continuously.

Claims (2)

1, a kind of electrothermal heater, comprise water pipe [1], heating wire [2], insulated porcelain sleeve [3], press line box [4], outer cover [5], it is characterized in that water pipe is parallel at least four row and arranges, every row water pipe is dressed up by the thin metallic tubd cover of three different-diameters, outside it, in the upper and lower side sealing of two-layer pipe, the outer tube of every row water pipe and outer tube, between middle tube and the middle tube, be communicated with through tube connector successively, the middle tube of first water pipe is communicated with through tube connector with the outer tube of tail row water pipe, wrap up in the heating wire that packages insulated porcelain sleeve, back and forth from the inner tube of every row water pipe, pass successively, the binding post in its two ends connecting line box, the upper end of first its outer tube of water pipe, adorn an admitting pipe joint [6], a titting water outlet [7] is adorned in the upper end of its middle tube of tail row water pipe, skin is an outer cover, fills full heat-insulation and heat-preservation powder in the outer cover.

2, electrothermal heater according to claim 1 it is characterized in that each layer metal tube and the tube connector of water pipe ［ 1 ］ is copper pipe, and the diameter difference of water pipe adjacent layer copper pipe should be greater than 4mm.

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