CN2226244Y - Miniature fast electric water heater - Google Patents

Abstract

The utility model provides a new miniature fast electric water heater, which is composed of a heating element which is provided with a layer of transparent electrothermal films. The utility model has the functions that the water and the electricity are completely isolated, the power is switched on instantly when the water is supplied and the power is switched off automatically instantly when the water is disappeared, the protection is limited by temperature, the power is adjustable, the indication is realized by lights, etc. The miniature fast electric water heater has the advantages of reliable performance, high heat efficiency, small size, and light weight and can be conveniently installed on the tap; the heat efficiency reaches more than 90%. The utility model solves the problem of using warm water in households, restaurants, hospitals, barber shops, industries, etc., and can also be used as shower device.

Description

Miniature quick electric water heater

The utility model relates to a kind of device that utilizes Electric radiant Heating Film with mobile running water Fast Heating.

Two kinds of devices that utilize electric energy with the running water Fast Heating that flows are arranged on the market now, and the first places the cavity of a small container with heating wire and electrothermal tube, when running water by wherein the time, electrothermal tube or electrothermal wire heating measured transmit feedwater, make the water heating.It two is that two (or two groups) electrodes are placed the cavity of a small container, when running water passes through wherein, the alternating current of 220V is added between two (or two groups) electrodes, make electric conductor with water, with the water heating, the common ground of these two kinds of devices is exactly that heater element places water, water power does not have fine isolation, once imperfect earth or heating tube insulation damages will cause electric shock accidents, cause personal injury.

The purpose of this utility model is to provide a kind of water power to isolate; and the new device that fast running water that flows is heated; this device can also have been realized the water energising; anhydrous outage; function such as adjustable power, protected by temperature limitation; it can eliminate the unsafe factor that occurs when people use effectively, and easy to use.

The purpose of this utility model is achieved in that to utilize (or one group) insulating properties good, to all fabulous quartz glass tube (5) of the cold causus tolerance intensity of play, make layer of transparent Electric radiant Heating Film (6) at its outer surface, quartz glass tube (5) and Electric radiant Heating Film (6) form the heating tube of this device jointly, during energising, running water flows in pipe, Electric radiant Heating Film is converted into heat energy at tube outer surface with electric energy, heat energy conducts the water that flows in the pipe by quartz glass tube, and water has just been isolated by quartz glass tube (5) fully with electricity like this.

The utility model provides a kind of structure of Fast Heating of high electrothermal efficiency: to be transparent electric heating film (6) molten mutually with quartz glass tube (5) intimate is an integral body for one of key of this structure, and feedwater is transmitted in Electric radiant Heating Film (6) evolution of heat rapidly.Two of key is to form 2～3mm gap at the inner Thin-walled Aluminum core pipe (7) of installing of quartz glass tube (5) between quartz glass tube (5) and aluminium core pipe (7), and water flows through from the gap, can avoid managing the formation of inner cold water post like this, and water flows through the electrothermal tube instant heating.Three of key is to install the reflector (19) that one deck is made of aluminium sheet additional in the outside of electrothermal tube, with the heat that reduces electrothermal tube to the outer space radiation.Owing to adopt said structure, the thermal efficiency of the present utility model is up to more than 90%, and firing rate reaches in water flowing energising back promptly had hot water to flow out from outlet pipe (23) in 3～5 seconds.

The utility model provides a kind of water power switch to realize water energising, anhydrous power down function.This water power switch is made up of rubber membrane (11), back-moving spring (12) and microswitch (13).When water is arranged, the pressure of flowing water make rubber membrane (11) recessed with microswitch (13) closed → make silicon controlled control circuit conducting → heating tube begin the energising heating, when anhydrous, by back-moving spring (12) rubber membrane (11) resetted and one microswitch (13) opened → disconnect the heating of cutting off the power supply → stop of silicon controlled control circuit → heating tube.Therefore can prevent from quartz ampoule (5), still to switch on when anhydrous and add the unsafe factor that thermosetting dry combustion method phenomenon is brought.

The utility model provides a kind of temperature controller with manual reset (2) limit temperature, and when leaving water temperature is giving when deciding in the scope, the contact of temperature controller (2) is connected main circuit, the energising heating; Give when deciding scope when leaving water temperature surpasses, the contact of temperature controller disconnects main circuit, and heating stops; Give when deciding scope when temperature drops to, with the temperature controller junction closure, therefore can prevent the too high unsafe factor that brings of leaving water temperature by hand-reset.

The utility model provides a kind of adjustable power circuit, this circuit is by controllable silicon (10), potentiometer with switch electronic devices and components such as (15) are formed, when needs are regulated power, connect power supply → potentiometer (15) is opened and rotational potentiometer knob → thyristor operating angle changes → realizes power from the 0 continuous adjusting to rated power, so can satisfy the different requirements of user power.

The utility model provides a kind of structure that has good water route sealing property between heating tube and the turnover hydroecium that makes.The key of this structure is: the upper and lower side at heating tube adopts heat resistant rubber sealing gasket (4), for avoiding because of hydraulic pressure causes heating tube and intake chamber (9) the firm connection of the disconnection of water-supplying chamber (3) special employing turnbuckle (22).

The utility model installs cooling cover (20) additional in order to reduce temperature in the cavity in the heating tube back.

Structure of the present utility model is by water inlet pipe (18), intake chamber (9), water power switch (11) (12) (13), heating tube (5) (6) water-supplying chamber (3), outlet pipe (23), reflector (19), cooling cover (20), SCR control circuit (10) (15) (2) (24) (25), shell chief components such as (1).It is a kind of miniature electric heater that its physical dimension has only 26 * 11 * 7.5cm.

Fig. 1 is a structure chart of the present utility model

Wherein: 1, shell; 2, temperature controller; 3, water-supplying chamber; 4, sealing gasket; 5, quartz glass tube; 6, transparent electric heating film; 7, aluminium core pipe; 8, electrode; 9, intake chamber; 10, controllable silicon; 11, rubber membrane; 12, back-moving spring; 13, microswitch; 14, gland; 15, potentiometer; 16, the electrical equipment box; 17, power line; 18, water inlet pipe.

Fig. 2 is a side partial sectional view of the present utility model.

Wherein: 19, reflector; 20, the cooling cover; 21, fixed base plate; 22, turnbuckle; 23, outlet pipe; 24, red eye; 25, greensignal light.

Describe working condition of the present utility model in detail below in conjunction with Fig. 1, Fig. 2, Fig. 3:

With fixed base plate (21) water heater is fixed on the wall, water inlet pipe (18) is connected with tap, the tap of fetching boiling water then, water flows into by water inlet pipe (18), flows out by intake chamber (9) → heating tube → water-supplying chamber (3) → outlet pipe (23).Connect power supply with power line (17), red eye (24) is bright, when hydraulic pressure reaches when giving level pressure power, rubber membrane (11) is recessed, and compression reseting spring (12) makes microswitch (13) closure, connect the SCR control circuit, the main circuit conducting, greensignal light (25) is bright, Electric radiant Heating Film (6) conductive exothermal, and this heat conducted to water in the pipe by quartz glass tube, flow out warm water by outlet pipe.Water temperature surpasses when giving fixed temperature when heating, and temperature controller (2) contact disconnects the power supply that cuts off Electric radiant Heating Film (6), stops heating, greensignal light goes out, and when temperature drops to certain limit, presses temperature controller (2) SR, green indicating lamp (25) is bright, and heating tube begins heating again.

This miniature quick electric water heater; having water power isolates fully; functions such as water energising, anhydrous outage, protected by temperature limitation, adjustable power, light indication are arranged; dependable performance, the thermal efficiency reach more than 90%, and volume is little; in light weight; can be installed in the tap position easily, solve family, restaurant, hospital, barber shop, industry etc. and used the warm water problem, also can doublely do shower and use.

Claims (7)

1. miniature quick electric water heater that utilizes electric energy with the running water Fast Heating that flows, this water heater is by water inlet pipe (18), intake chamber (9), water power switch (11), (12), (13), heating tube (5), (6), water-supplying chamber (3), outlet pipe (23), reflector (19), cooling cover (20), SCR control circuit (2) (10) (15) (24) (25), shell major parts such as (1) is formed, it is characterized in that heating tube has layer of transparent Electric radiant Heating Film (6) at quartz glass tube (5) outer surface, adorn an aluminium core pipe (7) in this heating tube and also be sealed in the fixing hole of intake chamber (9) and water-supplying chamber (3) by sealing gasket (4) and turnbuckle (22).

2. electric heater according to claim 1 is characterized in that its matrix is a quartz glass tube, also can be heat-resistant glass tube, earthenware and high aluminum pipe.

3. electric heater according to claim 1 is characterized in that its outer surface of matrix has layer of transparent Electric radiant Heating Film (6), is provided with two strip electrodes (8) on film.

4. electric heater according to claim 1 is characterized in that dress aluminium core pipe (7) in its quartz glass tube, also can be stainless steel tube or heat-resistant glass tube.

5. electric heater according to claim 1, it is characterized in that intake chamber (9) lower end installation water power switch: comprise rubber membrane (11), back-moving spring (12), microswitch (13), external application gland (14) compresses.

6. electric heater according to claim 1 is characterized in that controllable silicon (10), potentiometer (15), signal lamp (24) (25) are installed in the side and the bottom of intake chamber (9), and temperature controller (2) is installed in the side of water-supplying chamber (3).

7. electric heater according to claim 1 is characterized in that intake chamber, water-supplying chamber are nylon plastic(s).

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