CN2388538Y

CN2388538Y - Safety electric water heater

Info

Publication number: CN2388538Y
Application number: CN 99239792
Authority: CN
Inventors: 许友良; 梁建明; 李振帮; 王天祥
Original assignee: LUWAN ELECTRONIC TEACHING INSTRUMENT FACTORY SHANGHAI CITY
Current assignee: LUWAN ELECTRONIC TEACHING INSTRUMENT FACTORY SHANGHAI CITY
Priority date: 1999-09-30
Filing date: 1999-09-30
Publication date: 2000-07-19
Anticipated expiration: 2009-09-30

Abstract

The utility model discloses a safety electric water heater, which mainly adopts a thermal radiation lamp as a heating source. The thermal radiation lamp is sealed in a water heater tank by a heat conducting pipe, wherein, the inner wall and the outer wall of which are provided with covering layers made of heat resistant and insulating materials. The heat conducting pipe is supported and fixed the thermal radiation lamp through a light shading sheet and an elastic supporting frame. The utility model has the advantages of high safety, high heating speed, and high thermal efficiency.

Description

Safe electric water heater

The utility model belongs to a kind of electric heater.

The heating principle of existing electric heater generally is such: encapsulate heating wire with heat pipe, fill the material of magnesia and so between heat pipe and heating wire.Heat pipe is placed in the water tank of water heater.Connect after the power supply, the electrothermal wire heating is transmitted to heat pipe by filler, by heat pipe the water in the water tank is heated.The major defect of this electric heater is: owing to have only filler to isolate between heating wire and the heat pipe, leak electricity probably during energising, to user's the very big threat of personal safety formation.Simultaneously, because will be through the filler conduction, firing rate is fast inadequately, and the thermal efficiency is also not high enough.

The purpose of this utility model is to provide a kind of electric heater, can avoid electric leakage, improves safety in utilization, and the firing rate and the higher thermal efficiency are faster arranged again.

For achieving the above object, solution of the present utility model is: adopt the heat radiation mode to heat, promptly low with luminous efficiency, the strong lamp of heat radiation is made thermal source, with inside and outside wall the tectal heat pipe encapsulation of heat-resistant insulation material thermal source is arranged all, thermal source does not directly contact with heat pipe, heat pipe by bracing or strutting arrangement support indirectly, fixing thermal source, for example: can adopt light barrier and elastic support to combine and make bracing or strutting arrangement.

Owing to adopted the heat radiation mode to heat, fluorescent tube, air insulated are arranged between filament and the heat pipe, fluorescent tube does not directly contact with heat pipe yet, and sheathed bracing or strutting arrangement on the thermal source plays fixing and cushioning effect, and in the time of can preventing that water heater is subjected to accident collision, fluorescent tube is shattered.Just in case the fluorescent tube cracking takes place, and filament contacts on the heat pipe just at the right time, because the inside and outside wall of heat pipe all has the heat-resistant insulation material cover layer, can avoid the electric leakage accident equally.Simultaneously, the energy of thermal source radiation is directly absorbed by heat pipe, so firing rate is very fast.Sheathed light barrier on the thermal source, the energy of thermal source institute radiation is all absorbed by heat pipe basically, so the thermal efficiency is higher.

The utility model is described in further detail below in conjunction with the drawings and specific embodiments

Fig. 1 is the structural representation of a kind of specific embodiment of the present utility model.

Fig. 2 is the schematic diagram of middle light barrier 5 embodiment illustrated in fig. 1.

Fig. 3 is that the master of middle elastic support 6 embodiment illustrated in fig. 1 looks schematic diagram.

Fig. 4 is that schematic diagram is looked on the left side of elastic support 6 shown in Figure 3.

Fig. 5 is a circuit connection diagram embodiment illustrated in fig. 1.

Fig. 6 is the structural representation of middle water flow pressure switch 2 embodiment illustrated in fig. 1.

As shown in Figure 1, open water intaking valve, water flows into water heater by water inlet pipe 1, water flow pressure switch 2 is automatically with water heater and power connection, the outside emittance of halogen tungsten quartz lamp 7 beginnings heats up after heat pipe 8 absorbs this emittance, begins the outer water of heat pipe is heated, according to actual needs, can regulate power shelves level switch 10.Hot water, flows out by outlet pipe 14 by heat-resistant tube 13 from the heat-resisting mouth of pipe 12 again, and when water temperature surpassed setting value, temperature limiter 11 disconnected water heater power supply automatically.When not needing to use, turn off water intaking valve, no longer include water in the water inlet pipe 1 and flow into, the water flow pressure switch disconnects water heater and power supply automatically.

As shown in Figure 2, light barrier 5 is a diameter and the identical disk of heat pipe 8 internal diameters, above 4 circular holes 51 that diameter is identical with halogen tungsten quartz lamp pipe 7 diameters that evenly distribute, the smooth installation for assurance fluorescent tube 7 processes a technology grooving 52 on the limit in each hole 51.

As shown in Figure 3, Figure 4, elastic support 6 props up pawl 62 spot welding method be combined into by disk 61 and cross elasticity.Disk 61 diameters are identical with the diameter of

heat pipe

8, and 4 equally distributed h shape otch 611 are arranged on disk 61, and the door shaped plate in the h shape 60 to extrapolation, is promptly obtained 4 Jiong shape holes, and the size shape in these holes is just in time consistent with the cross section of halogen tungsten quartz ampoule end.It is slightly crooked that elasticity is propped up pawl 62 terminal parts.

Adopt 4 halogen tungsten quartz lamps 7 to make thermal source, the Jiong shape hole on the disk of hole 51 on the light barrier 5 and elastic support 6 of all packing into, the two ends of every

lamp

7,60 pairs of fluorescent tubes of door shaped plate have snap action.The halogen tungsten quartz lamp group that is with light barrier 5 and elastic support 6 is put into heat pipe 8, and a pawl 62 of elastic support 6 is against on the inwall of heat pipe 8 by elastic force.Heat pipe 8 is made by mild steel 08F, and its inside and outside wall all is coated with withstand voltage enamel.Between heat pipe 8, water heater end cap 3 and water-heater water tank 9, be provided with silicone rubber O-ring 4.A heat-resistant tube 13 is set in the water cavity of water heater outlet one end, and its water inlet 12 is fixed in water cavity top, and its delivery port is socketed in the inlet of outlet pipe 14.

Fig. 5 is the circuit connection diagram of present embodiment.

Fig. 6 is the structural representation of water flow pressure switch, and its operation principle is: when current intake antrum 18, form pressure on rubber pressure membrane 19, promote loose piece 15 and back down microswitch 17 forward, circuit is connected; When current stopped, the pressure on the rubber pressure membrane disappeared, and loose piece 15 is return under the effect of spring 16, and microswitch 17 resets, and circuit is cut off.Two electric wire leading foots 20 are arranged on the microswitch 17.

Claims

1. safe electric water heater, comprise water inlet pipe, power supply switch controller, water tank, thermal source, heat pipe and outlet pipe, place in the water tank with heat pipe encapsulation thermal source, it is characterized in that: this thermal source is the heat radiation lamp, heat pipe has the high temperature insulation cover layer, and heat pipe supports the heat radiation lamp indirectly by bracing or strutting arrangement.

2. safe electric water heater according to claim 1 is characterized in that: its bracing or strutting arrangement is light barrier and elastic support, and light barrier and elastic support are set on the heat radiation lamp, and a pawl of elastic support is against on the heat pipe inwall by elastic force.

3. safe electric water heater according to claim 1 is characterized in that: its heat radiation lamp is a halogen tungsten quartz lamp.

4. safe electric water heater according to claim 1 is characterized in that: the high temperature insulation cover layer on its heat pipe is withstand voltage enamel.

5. according to the described safe electric water heater of any claim in the claim 1 to 4, it is characterized in that: on water inlet pipe, be provided with one and can temperature limiter be set in the water cavity near outlet pipe according to having or not water into to control the water flow pressure switch of power switch.