CN105910286A

CN105910286A - AC-DC dual-purpose high-power electric water heater

Info

Publication number: CN105910286A
Application number: CN201610217165.3A
Authority: CN
Inventors: 丁樟富
Original assignee: Individual
Current assignee: Individual
Priority date: 2016-04-01
Filing date: 2016-04-01
Publication date: 2016-08-31

Abstract

The present invention provides an AC-DC dual-purpose high-power electric water heater. The AC-DC dual-purpose high-power electric water heater is composed of two portions including an electric water heater basic device and a control device. The electric water heater has the structure that a water heater inner container and an inner container seal cover are disposed in a cylindrical heat insulation electric water heater housing, an electric heating pipe, a temperature controller and a snap action temperature limiter are disposed in the inner container, a lower part of the housing is provided with a water inlet, a water outlet and a sewage draining exit, and the front side of the water heater housing is provided with a heating indicating lamp and a temperature display. The control device is installed between the inside of a side cover of the water heater and the inner container seal cover, the snap action temperature limiter, the temperature controller, a DC operation relay and a filtering rectifier are disposed in the control device, on and off of the electric heating pipe are controlled by the DC operation relay, and a power line stretches out of the cylindrical housing and is electrically connected with a power plug. The electric water heater is AC-DC dual-purpose, and on and off of the electric heating pipe are controlled by the DC operation relay without arc discharge. The electric water heater is suitable for office and household use, and especially suitable for DC photovoltaic power generation household use.

Description

AC/DC large power, electrically water heater

Technical field

The present invention relates to a kind of electric heater, especially AC/DC electric heater.

Background technology

At present, known electric heater is all to use 220V AC-powered, for energy-saving ring Protect, units concerned the most progressively promote my patent, family's double-track system power supply need not, Use less, directly use system (ZL201220245052.1), be now called for short " directly using formula photovoltaic generation ", DC voltage 220V, powerful household electrical appliance, when using powered by direct current, when switch is opened With want arcing when breaking, cause switch contact to blow or adhesion, I am with the direct current of 220V behaviour Solve arcing problem as relay, and apply for patent, (ZL201520169187.8), But when directly by formula photovoltaic generation electric power deficiency, need by AC-powered, photovoltaic DC When power plug of electric water heater is inserted into 220V alternating current, when temperature controller is connected, find direct current Operational relay is not enough, under the contact of relay is not inhaled because of the magnetic produced, it is impossible to work, Later being contained in the DC operation relay of electric heater, the AC relay using 220V instead is made Test, finds that using effect is also fine in alternating current, and in 220V unidirectional current, test can work Make, but less than five minutes, AC relay just coil burnt out, develop and solve the most easily Electric heater AC/DC is the most very urgent.

Summary of the invention

In order to solve the DC operation relay of 220V use in 220V alternating current time, because of Magnetic deficiency can not work and to be burnt out the asking in 220V unidirectional current of 220V AC relay Topic, the present invention provides one to not be used in any manual switch on electric heater, attaching plug It is directly inserted in alternating current or galvanic supply socket, it is achieved that AC/DC.

The technical solution adopted for the present invention to solve the technical problems is: it is by electric heater base This device and control device two parts composition.The structure of the basic device of electric heater is, In the casing of electric water heater of drum-shaped insulation, it is water heater liner and inner bag sealing lid, hot water Device inner bag is electric heating tube and temperature controller, Kick type temperature limiter, have below shell water inlet, Outlet and sewage draining exit, seal with plug, eye-catching place, outer cover of water heater front, load onto instruction Lamp and temperature indicator.Control in device is installed in outer cover of water heater side lid close with inner bag In the middle of capping, inside there are Kick type temperature limiter, temperature controller and DC operation relay, in temperature control Device and DC operation are made in the middle of relay, increase a bridge rectifier, need not change, Solve AC/DC problem easily, in order to suppress DC operation relay in exchange The noise produced when electricity uses, has added line filter circuit, and the two is combined composition filtering Commutator, two wires of temperature controller, one connects filter-rectifier by Kick type temperature limiter The positive pole of output, another root connects one end of DC operation relay coil, DC operation relay The other end of device coil, connects the negative pole of filter-rectifier, the electrode of electric heater socket, removes Outside supply filter rectifier, also AB, DE two docking point of electrical connection DC operation relay Half A D contact, second half B E contact electrical connection add heat pipe, by temperature controller and kick Formula temperature limiter controls the break-make of DC operation relay coil, thus controls to add the break-make of heat pipe, Not arcing in unidirectional current uses.Its operation principle process is as follows: when an alternating current is used, The filtered commutator of alternating current exports, electrical connection temperature controller and the coil of DC operation relay, Controlling the contact of DC operation relay, DC operation makees the contact of relay, and half connects and adds Heat pipe, second half electric connection of power supply inlet wire, reduces filter-rectifier load and loss, with friendship Stream electricity is directly to adding heat pipes heat, when arriving the temperature set or Kick type limit temperature, and temperature control Device disconnects and being no longer heat up.When temperature is less than lower threshold values in water heater, connect again DC operation Make relay, add heat pipe electricity again and continue heating.When using powered by direct current, unidirectional current is direct By filter-rectifier, it is lost the least, other principles and the same alternating current of process.The most special After some bridge rectifiers are described, filter capacitor must not be increased, otherwise use at alternating current Time, DC voltage is not 220V, but lies prostrate 300, DC operation relay to be burnt out more Device.

The invention has the beneficial effects as follows, this electric heater, alternating current and photovoltaic DC electricity two With, the break-make of electric heating tube is controlled with DC operation relay, will not arcing.

Accompanying drawing explanation

The present invention is further described with embodiment below in conjunction with the accompanying drawings.

Fig. 1 the present embodiment structural representation.

Fig. 2 AC/DC electric water heater circuit schematic diagram.

In figure 1, shell 2, water inlet 3, outlet 4, add heat pipe 5, temperature indicator 6, Kick type temperature limiter 7, display lamp 8, temperature controller 9, power line 10, DC operation relay 11, sewage draining exit 12, inner bag 13, discharge outlet plug 14, filter-rectifier 15, attaching plug.

Detailed description of the invention

In FIG, being inner bag (12) in the shell (1) of insulation, inner bag has in (12) Adding heat pipe (4), there is water inlet (2) outlet (3) sewage draining exit (11) lower section of shell With discharge outlet plug (13), there are temperature indicator (5), display lamp (7), side in front Being temperature controller (8), power line (9) is hauled out outside bucket, connects attaching plug (15).

In fig. 2, dotted portion is filter-rectifier (14), and it is to input at power of alterating and direct current In circuit, C1, C2, C3, LF form line filter circuit, whole through D1～D4 bridge-type Positive pole after stream, connects Kick type temperature limiter (6), temperature controller (8), electrically connects DC operation The coil of relay (10), returns the negative pole after rectification, when temperature controller (8) is connected, DC operation relay (10) coil electricity, under contact is inhaled, contact A and B D and E Connecting, alternating current 220V or direct current 220V are added on heat pipe (4), and display lamp (7) is bright； If temperature controller (8) is disconnected, DC operation relay (10) coil blackout, contact is released Putting, contact A and B D and E disconnect, and heat-generating pipe (4) does not works, and display lamp (8) goes out.

Claims

1. an AC/DC large power, electrically water heater, it by electric heater basic device and Control device two parts composition, casing of electric water heater, inner bag that it is incubated by drum-shaped, add Heat pipe, water inlet, outlet, display lamp and temperature indicator composition, is characterized in that: In power of alterating and direct current input circuit, C1, C2, C3, LF form line filter circuit, warp D1～D4 bridge rectifier, output connects temperature controller, Kick type temperature limiter and DC operation relay Coil, add heat pipe by DC operation relay, electric connection of power supply input circuit.

2. the AC/DC large power, electrically water heater piece described in Ju claim 1, its feature Be: in electric heater side bung and inner bag seals in the middle of lid, equipped with Kick type temperature limiter, Temperature controller and DC operation relay, filter-rectifier, power line is hauled out bucket external power supply and is inserted Head.