CN201045535Y

CN201045535Y - Bare electric instant heating water heater

Info

Publication number: CN201045535Y
Application number: CNU2007200394494U
Authority: CN
Inventors: 陈及安; 叶期明
Original assignee: Individual
Current assignee: Individual
Priority date: 2007-06-01
Filing date: 2007-06-01
Publication date: 2008-04-09
Anticipated expiration: 2017-06-01

Abstract

The utility model relates to a bare instant heating water heater, which adopts a tube-shaped structure. The utility model is characterized in that in an insulating water tube, an electric heat coil is barely arranged on the middle-section of the water pipe to constitute a heating section. A water inlet segment and a water outlet segment are respectively arranged on two ends of the heating section, a membrane power switch is arranged on a water inlet hole of the water inlet segment. A water inlet joint and a water outlet joint which are connected on a pipe mouth of the water inlet segment and a pipe mouth of the water outlet segment are all conductive contacts, and the conductive contacts are designed into grounding states through grounding wires. The utility model can eliminate electric energy loss in the process of thermal conversion, which can further improve energy conversion efficiency.

Description

Naked electric formula instant water heater

Technical field

It is the water heater spare of the energy that the utility model relates to the electricity, more particularly a kind of instant electric water heater.

Background technology

Heater is instant electric water heater's a Primary Component, mainly contains metal heater and nonmetal heater.Nonmetal heater is commonly called as Glass tube heater or QSC heater, and the principle of glass tube heating technique is to plate layer of conductive material on the outer wall of glass, leans on the water of the big current flow heats glass tube inwall of glass tube outer wall, has realized the water power isolation.And the technology of immerging metal tube heater is to adopt the electric heating bundle in the inwall of metal, realizes heating by electric heating Shu Fare.

In the prior art, no matter be metal heater or nonmetal heater, safe in utilization in order to guarantee, lay special stress on electricity separation all, the caloric requirement that big electric current produces passes to current by the heat-conducting medium of insulation, thereby the electric energy that always exists in the hot transfer process runs off, and greatly limited the raising of conversion efficiency.

The utility model content

The utility model is for avoiding above-mentioned existing in prior technology weak point, a kind of naked electric formula instant water heater is provided, run off in the hope of the electric energy of eliminating in the hot transfer process, further improving energy conversion efficiency.

The technical scheme that the utility model technical solution problem is adopted is:

The utility model adopts tubular structure, and its design feature is that the electrically-heated coil open ground places the stage casing of water pipe in the insulation water pipe, constitutes bringing-up section; At the two ends of bringing-up section, be set to inlet segment and water exit end respectively, the water inlet place at described inlet segment is provided with the thin-film electro source switch; The water supply connector and the water out adapter that are connected the inlet segment mouth of pipe and are connected on the water exit end mouth of pipe are conductive contact, and described conductive contact is set to ground state by earth connection.

Compared with the prior art, the beneficial effects of the utility model are embodied in:

1, the utility model places water with the heating wire open ground, can fully guarantee user's safety by pipeline setting and ground connection processing, can make thermal conversion rate be close to 100% again.

2, the utility model is simple in structure, with low cost, easy to implement.

Description of drawings

Fig. 1 is the utility model structural representation.

Fig. 2 is water inlet pipe or an outlet pipe equivalent resistance schematic diagram in the utility model.

Number in the figure: 1 electrically-heated coil, 2 bringing-up sections, 3 inlet segments, 4 water exit ends, 5 power switches, 6 water supply connectors, 7 water out adapters, 8 earth connections.

Below, in conjunction with the accompanying drawings the utility model is further described by the specific embodiment:

The specific embodiment:

Referring to Fig. 1, adopt tubular structure, in the insulation water pipe, electrically-heated coil 1 open ground places the stage casing of water pipe, constitutes bringing-up section 2: at the two ends of bringing-up section 2, be set to inlet segment 3 and water exit end 4 respectively, water inlet place at inlet segment 3 is provided with thin-film electro source switch 5; The water supply connector 6 and the water out adapter 7 that are connected the inlet segment mouth of pipe and are connected on the water exit end mouth of pipe are conductive contact, and conductive contact is set to ground state by earth connection 8.

In concrete the enforcement, the insulation water pipe on the bringing-up section 2 adopts to have heat-resisting and earthenwares insulating properties, and the insulation water pipe on inlet segment 3 and the water exit end 4 adopts earthenware or rubber tube.Require water supply connector 6 and delivery port joint 7 good earths, the length of inlet segment 3 and water exit end 4 is long more simultaneously, and use will be safe more, but endless can make the hot water heat reduce, and can run counter to original intention of the present utility model again.

Safe handling environment of the present utility model is indoor use, interior circuit all has good ground connection, product can not freezed by trickle or Inlet and outlet water, simultaneously based on the city tap-water pipe network, promptly reach the running water of drinking water standard, the resistivity that meets under the running water normal temperature of drinking water standard approximately is P 〉=1300 Ω cm.Under this service condition, can prove safety in utilization of the present utility model.Such as, the circuit under intercepting water inlet (or water outlet) inactive state as shown in Figure 2, when water temperature is constant, when the current resistance of certain diameter and length is:

In the length of proper extension inlet segment 3 and water exit end 4, and can guarantee hydraulic pressure under the prerequisite between 1.5 handkerchiefs-10 handkerchief, appropriateness reduces the into sectional area of water and outlet pipe, thereby has increased the resistance value of current resistance.

Follow resistance because of the distribution of current and be inversely proportional to, so the electric current that can draw the current resistance of flowing through as calculated is less than 0.4mA, much smaller than the minimum 1mA of human body to electric current.

Referring to Fig. 2, the length of setting water inlet pipe and outlet pipe is respectively 50cm, and radius is 0.2cm, the known running water resistance ρ 〉=1300 Ω cm that meet drinking water standard, and therefore the resistance of the water in water inlet pipe and outlet pipe is respectively

R water=1300 Ω cm * 50cm/3.14 * 0.2 * 0.2cm ²=517516 Ω

Even if the terminal voltage of resistance wire all forms electric current in water inlet pipe and outlet pipe, the electric current in the water is so: I water=220U/R water=0.00042 peace doubly is 0.4mA

Obviously, water inlet and outlet pipe length are being set suitably, appropriateness reduces the into sectional area of water and outlet pipe, can also further increase the resistance value of current resistance, guarantees to use safely (human body is 1mA to the safe tolerance value of electric current).

For the thin-film electro source switch is reliably opened, should guarantee that hydraulic pressure is 1.5 handkerchiefs-10 handkerchiefs.

Using method

1, environment for use must meet the following conditions:

A, use running water must meet national drinking water sanitary standard.

B, must under antifreeze state, could use, and the infield can not trickle.

C, minimum hydraulic pressure can not be less than 1.5 handkerchiefs, and the hydraulic pressure that cold water flows to can not surpass 10 handkerchiefs.

D, circuit must specific placement.

2, use way:

After the installation, must earlier running water be passed through after the whole electric heater, and then connect power supply, the normal use as running into when cutting off the water, also must be cut off the electricity supply earlier later on, allows water thoroughly connect power supply again after the whole electric heater of circulation.

Claims

1. naked electric formula instant water heater adopts tubular structure, it is characterized in that electrically-heated coil (1) open ground places the stage casing of water pipe in the insulation water pipe, constitutes bringing-up section (2); Two ends in bringing-up section (2) are set to inlet segment (3) and water exit end (4) respectively, at the water inlet place of described inlet segment (3), are provided with thin-film electro source switch (5); The water supply connector and the water out adapter that are connected the inlet segment mouth of pipe and are connected on the water exit end mouth of pipe are conductive contact, and described conductive contact is set to ground state by earth connection (8).

2. naked electric formula instant water heater according to claim 1, it is characterized in that the insulation water pipe employing on the described bringing-up section (2) has heat-resisting and earthenwares insulating properties, the insulation water pipe on described inlet segment (3) and the water exit end (4) adopts earthenware or rubber tube.