CN201110632Y

CN201110632Y - Instant-heating electric water heater

Info

Publication number: CN201110632Y
Application number: CNU2007200442394U
Authority: CN
Inventors: 丁永兵
Original assignee: Individual
Current assignee: Individual
Priority date: 2007-10-18
Filing date: 2007-10-18
Publication date: 2008-09-03
Anticipated expiration: 2017-10-18

Abstract

Disclosed is an instantaneous electric water heater, which belongs to the electrical heating technical field, and comprises a rectification converter circuit, an electric induction coil and a heating component. The output of the rectification converter circuit is connected with the electric induction coil. The instantaneous electric water heater is characterized in that the heating element is formed by a PPR pipe and a non-rust iron bar which is in non-hole tooth shape in the cross section and is installed in the PPR pipe, and the electric induction coil is twined on the PPR pipe. The instantaneous electric water heater solves problems of long heating period, low efficiency and large volume of the existing electric water heater, further, the instantaneous electric water heater is simple in structure, small in volume and fast in heating speed, and can supply heating water throughout the day instantaneously.

Description

The instant electric water heater

Technical field

The utility model relates to a kind of electric heater, the electric heater that especially a kind of principle of utilizing eddy current to heat ferrous components heats, specifically a kind of instant electric water heater.

Background technology

At present, existing electric heater all is the preliminary election mode of heatings that adopt, it exists heating cycle long, need insulation after the heating, cause energy waste, the efficiency of heating surface is low, heating element heater surface is incrustation, problem such as aging easily, long owing to heating cycle simultaneously, when using hot water, needs often can't in time provide, so that use the family of electric heater to have in the winter time have a bath according to plan, often appearing at needs to wait for that several hrs could have hot water once more for using after one barrel of hot water has had, bring great inconvenience for people's life.Therefore developing a kind of instant electric water heater is the effective means that solves this type of problem.

Summary of the invention

The purpose of this utility model is the slow problem of firing rate that exists at existing electric heater, designs a kind of thermal efficiency height, and firing rate is fast, and energising can go out the instant electric water heater of hot water.

The technical solution of the utility model is:

A kind of instant electric water heater, comprise rectification frequency changer circuit, inductance coil and heater block, the output of rectification frequency changer circuit links to each other with inductance coil, it is characterized in that described heater block by PPR pipe (the netted engineering plastics pipe of crosslinked polypropylene high density) be installed in the stainless iron bar that cross section in the PPR pipe is the atresia profile of tooth and form, described inductance coil is wrapped on the PPR pipe.

The described PPR pipe that is wound with induction coil is vertically mounted in the housing of electric heater, and water inlet is positioned at the lower end of described PPR pipe.

The cross sectional shape of the stainless iron bar in the described PPR of the being installed in pipe is " rice " font structure.

Described heater block comprises that also one is provided with the heat transfer block of water stream channel, high-power heater members in the described rectification frequency changer circuit (as IGBT pipe and rectifier bridge) is installed in this heat transfer block, and the delivery port of this heat transfer block communicates with the water inlet of the PPR pipe that is wound with induction coil.

The output voltage of described rectification frequency changer circuit is 280～600V, and frequency is 20kHz～35kHz.

In same electric heater, be vertically installed with the one or more heater block of forming by stainless iron bar and PPR pipe, should be connected in series mutually and guarantee that the water inlet of each heater block is positioned at its underpart by connecting water pipe between each heater block, induction coil wound also is connected in series mutually on each PPR pipe.

Operation principle of the present utility model is to become voltage at 280～600V by circuit conversion civilian 220V/50Hz or 380V/50Hz alternating current, the alternating current of frequency about 20～35kHz.This high-frequency alternating current is added on the inductance coil of handling through special processing, inductance coil forms the higher-order of oscillation with the resonant capacitance circuit of coupling, stainless iron is made in the rectangular PPR of the being positioned over hot water pipeline of M shape shape, inductance coil is wrapped on the PPR pipeline through after heat insulation, can on the stainless iron of M shape shape, form the high-frequency vortex rotating excitation field at the higher-order of oscillation that forms on the inductance coil, make it rapid heating, after cold water flows through this PPR pipeline, water will be taken away the heat of stainless iron, thereby reach the purpose that adds hot water.

The beneficial effects of the utility model:

The utility model at first passes through special heat transfer block with cold water, and a large amount of heats that circuit produces are taken away, and also this heat is used fully when having satisfied to high power device (rectifier bridge and IGBT) heat radiation, has strengthened the utilization rate of electric energy greatly.

The inductor that the utility model utilizes stainless iron (SUS430,1Cr17) material to make has and is difficult for getting rusty, can not produce any harmful substance that is unfavorable for health, this is made a meter font (also can be the gear shape of other number of teeth, as four teeth, octadentate etc.), can increase the load-sensing amount greatly, thereby reduce the PPR duct length, thereby reduce machine volume.

The utility model is by directly being positioned over PPR pipeline central authorities with the stainless iron bar of rice font, make the water heating very evenly, do not have deviation.

The utility model cooperates high-power resonant technology, and is very little to the interference of power supply, is difficult for electrical network is produced any harmful effect.

The utility model adopts Instant heating type working method, and without any need for the space of storage of water, directly the PPR pipeline flows to outflow, is not easy to produce incrustation scale, has increased the life-span of water heater greatly, and especially in the very poor place of water quality, the advantage of this mode is very obvious.

The utility model adopts the passage of PPR pipeline as water, safety and sanitation.The whole hot pick technology that adopts after the one-shot forming, can not leaked, and reduces potential safety hazard.

Electric part of the present utility model can adopt very advanced reliable modular IGBT as main power device, and safe and reliable, the life-span is long.Can adopt the dual-temperature safeguard measure in addition, under anhydrous state,, also possess scald-preventing function simultaneously also not because of dry combustion method damages.Leaving water temperature control more can be by adopting the very high thermocouple of accuracy as temperature detection device, and sensitive and precision is unusual height all, makes very accurate of leaving water temperature.

In addition, by corresponding electronic control technology immediately heating water heater of the present utility model can be cut off the power supply and perfect grounding measures automatically under the electric leakage situation.

Water heater of the present utility model also has easy maintenance, and is energy-efficient, safe and reliable sanitation and hygiene, characteristics such as convenient to use.

The utlity model has the fast advantage of firing rate.Only need 3 to claim clocks from be energized to the hot water that is heated to 40 ℃～60 ℃ by switch, and can connect hot-water supply and never stop, when pressing on ﹠ off switch once more, the outage of can cutting off the water at once stops heating up water.

The utility model is under the situation of normal power supply, water supply, and the energy continuous operation provides hot water continuously, has made things convenient for people's life widely, helps saving time.

The utility model is because without storage tank, so the volume of complete machine is less, and it is little that area occupied is installed, simultaneously owing to adopt high frequency magnetic field to heat the decomposition that can also play to incrustation scale, guarantee to use for a long time non flouling behaviour, stainless iron staff can loss, is longer than traditional heating tube service life far away.

Description of drawings

Fig. 1 is the structural representation of heating part of the present utility model.

Fig. 2 is the structural representation of stainless iron of the present utility model.

Fig. 3 is the electrical schematic diagram of the utility model embodiment.

The specific embodiment

Below in conjunction with drawings and Examples the utility model is further described.

As shown in Figure 1, 2, 3.

Among the figure: 1 is inductance coil, and 2 is heater block, and 3 are the PPR pipe, and 4 is stainless iron bar, 5 is heat transfer block, and 6 is connecting pipe, and 7 is water intaking valve, and 8 is delivery port, 9 for being installed in the temperature element of delivery port, and A represents the water (flow) direction in the PPR pipe, and B represents to connect the output of frequency changer circuit, and C represents water inlet.

A kind of instant electric water heater, comprise the rectification frequency changer circuit, inductance coil 1 and heater block 2, the output of rectification frequency changer circuit links to each other with inductance coil 1, described heater block 2 is by PPR pipe 3 and be installed in the stainless iron bar 4 that cross section in the PPR pipe 3 is the atresia profile of tooth and (can adopt section shown in Figure 2 to be the stainless iron bar of M shape or the stainless iron bar of other shape, its length is generally 30～60 centimetres, material is SUS430,1Cr17) form, described inductance coil 1 is wrapped on the PPR pipe 3, between inductance coil and PPR pipe 3, also should increase thermal insulation layer during concrete enforcement and induction coil 1 be impacted, shorten its service life to prevent hot water.The PPR pipe 3 that is wound with induction coil 1 preferably is vertically mounted in the housing of electric heater when concrete the installation, and water inlet is positioned at the lower end of described PPR pipe 3, as shown in Figure 1.

In order to improve the service life of high-power heater members (as IGBT pipe and rectifier bridge), make full use of the energy, reduce the heat in the casing, the utility model also can be installed in the high-power heater members in the rectification frequency changer circuit (as IGBT pipe and rectifier bridge) in this heat transfer block 5 in the specific implementation, and the delivery port of heat transfer block 5 is communicated with the water inlet of the PPR pipe 3 that is wound with induction coil 1, water intaking valve 7 is installed on the water inlet of heat transfer block 5.

During concrete enforcement, at same electric heater a heater block 2 can only be installed vertically, but sometimes in order to improve firing rate, can in a housing, install more than two or two by stainless iron bar 4 and PPR pipe 3 heater blocks of forming 2, should be connected in series mutually and guarantee that the water inlet of each heater block 2 is positioned at its underpart by connecting water pipe 6 between each heater block 2, induction coil wound 1 also is connected in series mutually on each PPR pipe 3, as shown in Figure 1, water pipe between two adjacent heater blocks 2 of connection shown in Figure 1 is in order to ensure having press water to pass through in the PPR pipe 3, preventing burn-off phenomenon.In addition,, corresponding induction and temperature element 9 can be installed on delivery port, and their output signal is linked to each other with control circuit, by control circuit control frequency conversion output in order to prevent the generation of burning or superheating phenomenon.

Fig. 3 is a physical circuit figure of the present utility model, and it can be divided into 7 fritters: 1. 2. 3. 4. 5. 6. 7. display circuit of microcontroller circuit of impulse circuit of input circuit of holding circuit of inverter circuit of power circuit.Be the function of each circuit below:

(1) power circuit: this part is for the alternating current with input becomes direct current, and finishes the process of boosting, and civil power 220V is risen to 280～380V (present embodiment is 300V).Because the alternating current of 60Hz will be become the alternating current of 20kHz～35kHz (present embodiment is 30kHz), just must convert direct current to by first alternating current with low frequency 60Hz.In order to make this equipment not disturb other equipment when working, this piece circuit part has also added powerful filter function.

(2) inverter circuit: after having passed through the processing of power circuit, the function of this circuit is exactly the alternating current that direct current is transformed into 30kHz.The supply coil uses.

(3) holding circuit: Instant heating type high-frequency induction water heater has following protection: voltage pulsation protection, the excessive protection of electric current, the too high protection of temperature, interference protection; these protections are all in order to make water heater under abnormal conditions, protection equipment and do not have influence on other electric equipments.

(4) input circuit, impulse circuit, microcontroller circuit: these circuit all are the needs of electrical control function.

(5) display circuit: in order to allow the device that people can a displays temperature seeing water temperature and set up very directly perceived.

In a word: instant electric water heater's advantage is apparent, and is energy-efficient, easy to use, peace Complete reliable. The unique function of Instant heating type high-frequency induction water heater also is and can supplies water in continuous 24 hours, Satisfy the big demand of people's volume. Unique closed loop design, when flow changes within the specific limits, Can own follow the tracks of and change heating power, the temperature of assurance water outlet constant.

Claims

1, a kind of instant electric water heater, comprise rectification frequency changer circuit, inductance coil and heater block, the output of rectification frequency changer circuit links to each other with inductance coil, it is characterized in that described heater block by PPR pipe be installed in the stainless iron bar that cross section in the PPR pipe is the atresia profile of tooth and form, described inductance coil is wrapped on the PPR pipe.

2, instant electric water heater according to claim 1 it is characterized in that the described PPR pipe that is wound with induction coil is vertically mounted in the housing of electric heater, and water inlet is positioned at the lower end of described PPR pipe.

3, instant electric water heater according to claim 1 is characterized in that the cross sectional shape of the stainless iron bar in the described PPR of the being installed in pipe is " rice " font structure.

4, instant electric water heater according to claim 1, it is characterized in that described heater block comprises that also one is provided with the heat transfer block of water stream channel, high-power heater members in the described rectification frequency changer circuit is installed in this heat transfer block, and the delivery port of this heat transfer block communicates with the water inlet of the PPR pipe that is wound with induction coil.

5, instant electric water heater according to claim 1, the output voltage that it is characterized in that described rectification frequency changer circuit is 280～600V, frequency is 20kHz～35kHz.

6, instant electric water heater according to claim 1, it is characterized in that in same water heater, being vertically installed with the one or more heater block of forming by stainless iron bar and PPR pipe, should be connected in series mutually and guarantee that the water inlet of each heater block is positioned at its underpart by connecting water pipe between each heater block, induction coil wound also is connected in series mutually on each PPR pipe.