CN2051342U

CN2051342U - Rapid electromagnetic water heater

Info

Publication number: CN2051342U
Application number: CN 89207732
Authority: CN
Inventors: 顾立德
Original assignee: Individual
Current assignee: Individual
Priority date: 1989-05-30
Filing date: 1989-05-30
Publication date: 1990-01-17

Abstract

The utility model relates to an electromagnetic induction water heater which makes use of the alternating magnetic field generated by the electromagnetic induction to make an iron pipeline to form a vortex flow to reach the goal of rapid heating. The electromagnetic induction water heater mainly comprises an induction coil, a helical pipeline, a power switch device, an electric apparatus control portion, a power supply device, a casing, etc. The induction coil winds on one side of the helical pipe, and the water which flows in exothermic helical pipe is heated by the exothermic helical pipe simultaneously, which has the advantages of rapid warming, fast heating speed, uniform water temperature, high thermal efficiency and safety. The electromagnetic induction water heater has various self-protecting functions and has the characteristics of free output temperature setting and stable output power under the condition of certain voltage. The electromagnetic induction water heater can be used as a shower and a domestic water device, which is widely used in houses, hospitals, hotels and industrial and mining enterprises and institutes.

Description

Rapid electromagnetic water heater

The utility model relates to a kind of electromagnetic induction water heater, and the alternating magnetic field that this water heater utilizes electromagnetic induction to produce makes iron pipe form eddy current, thereby reaches the purpose of Fast Heating.

Existing fast water heater mainly contains two kinds of electrothermal heater and gas heaters.The electrothermal heater utilizes heating to the water container indirect, and its thermal efficiency is low.As adopt the immersion heating directly to the water heating, and safety problem does not solve, and directly contacts with water in case defective appears in heating, and whole shower water all has forceful electric power, will threaten to human life.There is safety problem too in gas heater, for example gas water heater is installed in the bathroom, because thermic load is bigger, it is also bigger to consume air capacity, in case the indoor lack of air that occurs, imperfect combustion will take place in coal gas, generates a large amount of carbon monoxide, human life is equally also threatened, poison or suffocate.

Task of the present utility model be to provide that a kind of efficiency of heating surface height, speed are fast, even water temperature, shower safe and reliable, easy to use quick electromagnetic water heater, it mainly is made up of induction coil, helical pipe, device for power switching, electrical control part, supply unit and shell etc.

Task of the present utility model is finished as follows: around helix tube one side, the alternating magnetic field that utilizes electromagnetic induction to produce makes the irony helix tube form eddy current with electromagnetic induction coil, and water is in the mobile limit heating of the pipe inner edge of heating.

Below with reference to accompanying drawing the utility model is described in further detail.

Fig. 1 is a schematic diagram of the present utility model

Fig. 2 is power rectifier pipe of the present utility model and power tube setting

Fig. 3 is an electrical control part of the present utility model

Fig. 4 is a heating part of the present utility model

With reference to Fig. 1, supply unit (1) is introduced its rectifying part with 220 volts of AC powers through power line, become single-phase Voltage pulsating direct-current supply, through preventing to send into behind the filter capacitor of reverse interference and the choke coil series loop of heating part (2) and device for power switching (3).The time of device for power switching (3) Push And Release is the excitation output circuit control of current collector control section, and by control switch time to device for power switching (3), is easy to control the purpose of its power output size.

With reference to Fig. 2,, high power valve (5), rectifying device (9), printed circuit board (PCB) (8) are housed on the aluminium heat sink (6) in order more effectively to utilize the energy.Aluminium heat sink (6) is installed in water inlet pipe (7) on every side on the plane, and its heat that comes out is transfused to current and absorbs, and has both reached device heat radiation cooling purpose, has improved the complete machine thermal efficiency again.

With reference to Fig. 3, electrical control part (4) is made up of the control circuit of vibration trigger, master oscillator, power sense circuit, change power circuit, voltage modification circuit, temperature-control circuit, current detecting and power output, warning circuit etc.Electrical control part (4) is respectively organized power supply by the low-tension transformer supply and is made its operate as normal.The major function of electrical control part (4) has two: the first is made reflection to the skew of power input voltage, and standard operation voltage is 220 volts, can threaten to reliably working when this voltage raises.The function of electrical control part (4) makes power output descend in the time of can making supply voltage be higher than 220 volts, up to stopping heating, reach the purpose of autoprotection.When voltage is lower than 220 volts, general electrothermal device is to be the quadratic relationship power output by voltage, result of use extreme difference under the low-voltage condition, the function of electrical control part (4) (as 160 volts-220 volts) within the specific limits makes power output relatively stable, linear decline or remain unchanged, when being lower than setting value (as 160 volts), stop heating.It two is that current temperature and this machine operating temperature are made reflection; the temperature sensor that thermistor is formed is set in device for power switching (3); this sensor is not participated in circuit working under usual conditions; when the fault owing to various accidental causes takes place; make the temperature of device for power switching (3) be elevated to 80 ℃ and stop power output immediately, thereby protected complete machine.

Be provided with identical sensor at the current output, the thermistor of this sensor be connected in series divider of back composition with temperature setting device (manual potentiometer form) on being contained in housing face-plate, its branch pressure voltage value receives operational amplifier and reference voltage is made comparisons, when current temperature during near set temperature value, power output reduces automatically, and the current temperature is when being higher than design temperature, heating stops, thereby obtains the current of various design temperatures easily and irrelevant with the temperature of input current.

Because the effect of above-mentioned two temperature sensors; the self-shield of electromagnet water heater is very capable, as in case anhydrous inflow input pipe and when " empty burn " took place, iron pipe was heated rapidly; temperature rise is surpassed set output current temperature, thereby stop output.

With reference to Fig. 4, heating part (2) mainly is made up of iron pipe (11), induction coil (12).Because adopted the eddy current heating principle of electromagnetic induction, heating part (2) is not provided with heater element, but makes the iron pipe (11) of water flowing produce the purpose that eddy current reaches heating by induction coil (12).Leave enough spaces between induction coil (12) and the iron pipe (11), Insulation Problems solves quite easily, but more than the withstand voltage Da Wanfu.The energy conversion rate that heating part (2) obtains can be up to 95%.Because water is the heating while flowing in the spirality iron pipe (11) of self-heating, so the uniformity of water temperature is very good, firing rate is also very fast, obtains hot water from starting shooting to and only needs about 20 seconds.

Claims

1, a kind of electromagnetic induction principle that utilizes, the Fast Heating electromagnet water heater of forming by heating part, helical pipe, device for power switching, supply unit, electric control system and shell etc., it is characterized in that induction coil in the heating part around spiral pipe one side, leaves enough spaces between induction coil and the iron pipe.

2,, it is characterized in that spiral pipe can be made by iron, stainless steel and other permeability magnetic material etc. by the described quick electromagnetic water heater of claim 1.

3, by the described quick electromagnetic water heater of claim 1, it is characterized in that current commutates pipe assembly and power tube assembly are installed in around the input pipe.