CN202101388U

CN202101388U - Directly-heated type electric water heater

Info

Publication number: CN202101388U
Application number: CN2011202016059U
Authority: CN
Inventors: 黄传忠
Original assignee: Individual
Current assignee: Individual
Priority date: 2011-06-16
Filing date: 2011-06-16
Publication date: 2012-01-04
Anticipated expiration: 2021-06-16

Abstract

The utility model discloses a directly-heated type electric water heater, which comprises an insulating heating water pipe, a resistance wire, an insulating water outlet pipe and an insulating water inlet pipe. The resistance wire is arranged in the insulating heating water pipe, two ends of the resistance wire are respectively connected with a firing line of a firing line connection port and a zero line of a zero line connection port, and the firing line connection port and the zero line connection port are respectively fixed on two ends of the insulating heating water pipe. One end of the insulating heating water pipe close to the zero line connection port is provided with a water outlet, one end of the insulating heating water pipe close to the firing line connection port is provided with a water inlet, the insulating water inlet pipe is communicated with the water inlet, and the insulating water outlet pipe is communicated with the water outlet. The directly-heated type electric water heater is quick in heating speed, simple in structure, safe and capable of saving energy.

Description

The direct-heating type electric heater

Technical field

The utility model relates to a kind of direct-heating type electric heater.

Background technology

Current market, household appliances kitchen appliances like the water heater, preclude the use of the separation of water heating are about to resistance wire heating elements, mounted on a considerable length of copper wire with resistance, the use of irrigation quartz and copper powder as insulation.The electric heater of this mode of heating, service life is not long, and have more than is needed how long just possibly the electric leakage caused short circuit and burnt.Reason is that copper pipe is elongated, and it is inhomogeneous that silica flour is filled, and having thickly has thinly, and thin local dielectric strength is low, and electricity is easy to produce electric leakage from puncturing here.If the electric leakage of two places is arranged, will produce short circuit through copper pipe.And heating element heater is mainly U font, screwed pipe shape, vortex flow shape in the market; Their turnover line leaves very closely; When leak electricity simultaneously in high voltage place and low-voltage place, will produce short circuit current through the copper pipe conduction, all electrical equipment leads, switch, socket, plug are burnt out simultaneously.

The silica flour of filling in the copper pipe will stop between the existing copper pipe of resistance wire and switch on as insulating materials on the one hand; Need it that insulating properties is arranged, the heat that through it resistance wire is produced again on the other hand conducts to copper pipe and then to water and heats, and these two performances are conflicting on being reasonable in one's demand and discussing; If silica flour is too many, then influence heat conduction, the heat that causes resistance wire to produce is difficult to spread out of; The too high meeting of the temperature of resistance wire influence its service life; If silica flour is too thin, then, reduces its dielectric strength and produce the electric leakage problem because silica flour at high temperature can burn agingly.

Mostly present electric heater is preheating type, promptly adopts the tank about 50 ~ 80 liters to fill cold water in advance, will could use after heating a period of time with electric heater in advance when needing.This water heater, volume is big, and manufacturing, transportation, installation cost are all very high, though tank is provided with heat-insulation layer outward in addition, can't accomplish absolute insulation after all, and hot water can only be preserved one day basically, caused power wastage easily.

The utility model content

The utility model is the direct-heating type electric heater that provides a kind of firing rate fast, energy-conservation, safe, simple in structure.

This direct-heating type electric heater that the utility model provides; Comprise insulation heating pipe, resistance wire, insulation outlet pipe, insulation admitting pipe; Said resistance wire is installed among the insulation heating pipe, and its two ends are connected with the live wire connection jaws that is fixed on insulation heating pipe two ends and the live wire and the zero line of zero line connection jaws respectively, and the insulation heating pipe has delivery port at the end near the zero line connection jaws; End near the live wire connection jaws has water inlet; Said insulation admitting pipe is communicated with water inlet, and insulation outlet pipe is communicated with delivery port, insulation admitting pipe and insulation heating pipe's length and not striking of the voltage people that the caliber size will guarantee fire hose head end and water outlet end.

Connection jaws place, said insulation heating pipe two ends shuts with insulating packing.

This electric heater also comprises RCCB, and this RCCB is installed in the resistance wire loop.

The inventor finds that water resistance in long plastic tube is very big; One 1.5 meters long; Caliber is 15 millimeters a plastic tube; Wherein the resistance of water is 5 megaohms, and this explains that the other end dropped to the safety value scope when water that when plastic tube has sufficient length, just can make wherein at one end was high voltage, guarantees that the people can not get an electric shock.Utilize this principle inventor to invent the tubular type electric heater of this water power mixed flow, compare with the electric heater that traditional water power is shunted and the utlity model has following advantage:

One, owing to adopt the water power mixed flow, water directly contacts with resistance wire, and it is fast to conduct heat, and does not need heat-insulation layer, and volume is just little, and cost is just low;

Second, preclude the use of the mixed water, the water in direct contact with the resistance wire, resistance wire of heat immediately absorbed by water, the resistor wire on the red is not up, the long service life of the resistance wire;

Third, preclude the use of the mixed water, the water in direct contact with the resistance wire, resistance wire of heat susceptible to water absorption, so that the resistance wire of the same diameter, through the current can be increased, but also can provide Gao power;

Four, capacity is unrestricted;

Five, can not need first heat accumulation water with putting instant heating, it in light weight.Convenient transportation is installed simple;

Six, because with putting instant heating, it is subsequent use not need first heat tracing to do, and does not just have the consumption of distributing of heat energy, therefore very energy-conservation;

Seven, water temperature is easy to adjust, turns down and opens feed cock greatly, just heightens to turn down feed cock.Avoided existing bucket formula or box when temperature is low in bucket, the disadvantage that can't heighten;

Eight, due preclude the use of tube design, electricity from the one into the other end Chu, plus water resistance in a large plastic tube, do not retain a short circuit, open circuit only, effective protection of the switches, wiring, sockets, plugs and other electrical , not because of short circuit and burned;

Nine, electricity is that a end from water inlet advances, and one of delivery port brings out, because the voltage drop of resistance wire makes that delivery port is exactly a no-voltage, uses with regard to safety;

Ten, preclude the use of earth leakage circuit breaker switch switch, Chu water saliva charged, it will automatically trip, do not rule out failure, the switch does not come on together, in Chu at the location of the water water imports have access to zero means, coupled with the water resistance of the insulating tube is large, it has a multi-layered security protection;

Even 11 resistance wires blow, earth leakage protective is malfunctioning, and the connecting to neutral line also breaks off, and three kinds of situation occur simultaneously.But because the resistance value of water is big in the insulation heating pipe, when length that designs the insulation heating pipe and caliber, drop to the zero reason that designs with delivery port place voltage, it also is safe using.

Description of drawings

Fig. 1 is the structural representation of the utility model.

Fig. 2 is the circuit interconnect pattern of the utility model.

The specific embodiment

As shown in Figure 1; The utility model comprises insulation heating pipe 1, resistance wire 2, insulation outlet pipe 3, insulation admitting pipe 4; The heating pipe of wherein insulating adopts long 1 meter, and the plastic tube that caliber is 20 millimeters, resistance wire 2 are installed among the insulation heating pipe 1; The live wire and the zero line of its two ends difference live wire connection jaws and zero line connection jaws connect, and two ends are shut with insulating packing.On the insulation heating pipe 1 water inlet 11 and delivery port 13 are arranged, wherein water inlet 11 is near live wire connection jaws end, in insulation heating pipe 1 lower end; Delivery port 13 is near zero line connection jaws end, and in insulation heating pipe 1 upper end, it is 1.5 meters that insulation admitting pipe 4 adopts a length; Caliber is 15 millimeters a plastic flexible pipe; The one of which end is communicated with water inlet 11, and the other end is connected on the tap, and insulation outlet pipe 3 is communicated with delivery port 13.

Fig. 2 is the circuit interconnect pattern of the utility model, and the utility model has adopted RCCB 5, gets two of 2.5 square millimeters of soft-hearted insulated wires of copper, and an end connects power supply, and the other end is connected in RCCB 5.RCCB 5 is closed; Measure the fire-wire interfaces of RCCB 5 with electricity measurer; Powered-down; Insulation heating pipe 1 is received the fire-wire interfaces of RCCB 5 near the live wire (in the lower end) of inlet end 11, and the zero line of heating pipe's 1 other end (upper end) that will insulate is received the zero line interface of RCCB 5.Make insulation heating pipe 1 internal resistance wire upper end connecting to neutral line go back simultaneously earth connection or with advance electric line in zero line be connected the lower end line of starting to exchange fire.Finally make the electricity and water all be to advance from the lower end, on bring out.Electricity is by RCCB 5 fire-wire interfaces, gets into from the lower end through insulating soft wire, through resistance wire 2; Flow back to RCCB 5 from the zero line of upper end, resistance wire 2 heatings this moment, water just absorbs heat very soon; What at this moment flow out is exactly hot water, and water temperature is controlled by feed cock.Turn down feed cock and promptly heighten water temperature, amplify feed cock and just turn down water temperature, just pass of cold water.Under the normal situation of circuit working; Owing on the resistance wire 2 voltage drop is arranged; Make that delivery port 13 is exactly a no-voltage, and insulation admitting pipe 1 because being arranged, enough length makes the resistance of Guan Zhongshui can reach 5 megaohms; Making the voltage that returns fire hose head end can reduce to zero, under normal circumstances is very safe therefore.Just in case resistance wire blows; Water among the insulation heating pipe 1 has become to connect the conductor of two ends live wire and ground wire; Because insulation heating pipe 1 has enough length, can make water column resistance wherein very big, through experimental measurement; The voltage of water side 13 is zero, even if also be safe under the situation that resistance wire 2 blows therefore.This embodiment is provided with ground connection and RCCB 5 in addition, just in case the water side still has faint voltage, and also can disconnecting circuit or ground connection be played the safeguard protection effect because of the tripping operation of RCCB 5.

This direct-heating type electric heater application notice:

Earlier running water tap is opened when 1, using, waited delivery port there are flowing out.Energising heating again, water can not be put too for a short time, otherwise water can seethe with excitement in the heating tube, and vaporization is advanced cold water water not come and is burnt out electrical equipment;

2, to close the electricity back after using up earlier and close water;

3, after use a period of time, the periodic cleaning incrustation scale.

Claims

1. direct-heating type electric heater; It is characterized in that this water heater comprises insulation heating pipe (1), resistance wire (2), insulation outlet pipe (3), insulation admitting pipe (4); Said resistance wire (2) is installed among the insulation heating pipe (1); Its two ends are connected with the live wire connection jaws (12) that is fixed on insulation heating pipe two ends and the live wire and the zero line of zero line connection jaws (14) respectively; Insulation heating pipe (1) has delivery port (13) at the end near zero line connection jaws (14), at the end near live wire connection jaws (12) water inlet (11) is arranged, and said insulation admitting pipe (4) is communicated with water inlet (11); Insulation outlet pipe (3) is communicated with delivery port (13), not striking of the voltage people that insulation admitting pipe and insulation heating pipe's (1) length and caliber size will guarantee fire hose head end and water outlet end.

2. direct-heating type electric heater according to claim 1 is characterized in that the live wire connection jaws (12) and the zero line connection jaws (14) at said insulation heating pipe (1) two ends located to shut with insulating packing.

3. direct-heating type electric heater according to claim 1 and 2 is characterized in that this electric heater also comprises RCCB (5), and this RCCB is installed in the resistance wire loop.