CN106610103A

CN106610103A - Central electric water heater provided with electric heating tube with electric heating wires installed in non-metal tube

Info

Publication number: CN106610103A
Application number: CN201510725050.0A
Authority: CN
Inventors: 刘运柳; 刘成
Original assignee: Guangdong Shunde Guangsheng Electrical Appliance Co Ltd
Current assignee: Guangdong Shunde Guangsheng Electrical Appliance Co Ltd
Priority date: 2015-10-24
Filing date: 2015-10-24
Publication date: 2017-05-03

Abstract

The invention provides a central electric water heater provided with an electric heating tube with electric heating wires installed in a non-metal tube. According to the electric water heater, a fast heating device which is used for heating water instantly when water flows through the fast heating device is arranged on a water outlet pipeline. A shell of the electric heating tube is made of a non-metal material. The electric heating tube is provided with a cold lead (1) at one end or provided with cold leads (1) at the two ends, located in a straight-through type non-metal tube (7) or a blind hole non-metal tube (8), and provided with the electric heating wires (3) and magnesium oxide powder or non-metal insulating materials or air (4). The cold leads (1) extend towards the outside of the tube through a non-metal plug (6). The electric heating wires (3) are subjected to dry ashing in air of the non-metal tube (7 or 8). Meanwhile, breakers (12) are installed on the lower portion of the open end of the straight-through non-metal tube (7) or the blind hole non-metal tube (8). As for each breaker, one end of the breaker is provided with two metal wires which are exposed and isolated from each other, the other end of the breaker is connected with a control element of a control circuit board, the two metal wires are in breakover when making contact with water simultaneously, then the control element is informed, and thus a circuit is switched off.

Description

Central electric water heater equipped with the electrothermal tube for having heating wire in non-metallic pipe

Technical field

The present invention relates to central electric water heater, in relating generally to Water tank for electrical water heater, what is adopted is immersed in water Non-metallic pipe in have the electrothermal tube of heating wire.

Background technology

The electrothermal tube being currently used in central electric water heater, 100% is by technical standard JB/T4088-1999《Day Use tubular electrothermal element》Or JB/T2379-1993《Tubular metal electric heating element》The tubular electrothermal element of production, Be " with metal tube as shell, heating alloy make heater, at one end or two ends have eduction rod, in metal Closely knit magnesium oxide powder dielectric is loaded in pipe, to fix the element of heater；" it is existing commonly using Heating；This metal shell heating, is completely sunk in the water, and after long-time use, can bear water Dirt, reduces heating efficiency, and corrosion punctures, and makes water powered, is world-famous puzzle.

The content of the invention

The purpose of the present invention is that existing central electric water heater is improved.

The present invention technical measures be：Water tank is by metal or nonmetallic be produced on outlet pipeline to be provided with current out-of-date I.e. plus hot water fast heating device 17.

Electrothermal tube used is built with heating wire 3 and magnesium oxide powder or air in straight-through non-metallic pipe or shell 7 4, and heating wire 3 is fixed in non-metallic pipe 7, eduction rod 1 is installed at the two ends of heating wire and passes through non-gold Category plug 6, outside protruded tube, becoming has the electrothermal tube 11 of heating wire in non-metal shell；Or close at one end Become blind hole non-metallic pipe or shell 8 built with heating wire 3 and magnesium oxide powder or air 4；By nonmetallic Plug 6, the blind hole non-metallic pipe other end is blocked, and at the two ends of heating wire 3 eduction rod 1 is installed, and by electricity Heated filament 3 bends to U-shaped, makes two eduction rods 1 at one end, by the protruded tube of nonmetallic plug 6 outside, become There is the electrothermal tube 11 of heating wire in non-metal shell；The heating wire 3, is the sky in non-metallic pipe 7 or 8 In gas, dry combustion method.

Simultaneously in straight-through non-metallic pipe 7 or the open end bottom of blind hole non-metallic pipe 8, equipped with chopper 12, institute Chopper is stated, is the control element that one end is two tinsels that are exposed and isolating, the other end and control board Connection, when two one metal wires run into water conducting simultaneously, notes that control element, disconnects circuit.

The non-metallic pipe 7 or 8, first-selected quartz glass tube, either blind hole pipe or straight pipe, internal electric heating Silk has one or more, is isolated with non-metallic insulation thing 10 between heating wire, prevents short circuit.

The out-of-date i.e. water-heating device 17 of the current, is that electrothermal tube 11 is housed in the container 18 for having intake-outlet, The out-of-date electrothermal tube of current is connected.

The invention has the beneficial effects as follows central electric water heater is using the electrothermal tube for having heating wire in non-metal shell, leaching Duck in drink not scaling, and heating never corrodes and punctures, and will not leak electricity.

Description of the drawings

Fig. 1 is that two ends have eduction rod, there is the electrothermal tube of heating wire in non-metallic pipe；

Fig. 2 to Fig. 4 is that one end has eduction rod, there is the electrothermal tube of heating wire in blind hole non-metallic pipe；

Fig. 5 to Fig. 7 is equipped with the central electric water heater structural representation of non-metal shell electrothermal tube；

Specific embodiment

In accompanying drawing, eduction rod or claim terminal 1, sealing ring or high-temp glue 2, heating wire 3, magnesia powder or non- Outside metal-insulator thing or air 4, metal or non-metallic pipe 5, nonmetallic plug 6, straight-through non-metallic pipe or title Shell 7, blind hole non-metallic pipe claim have heating wire in shell 8, non-metallic insulation spacer 10, non-metal shell Electrothermal tube 11, chopper 12, metal or nonmetallic water tank 15, shell 16, current it is out-of-date i.e. plus hot water dress Put 17, have the container 18 of intake-outlet.

Fig. 1 to Fig. 4 is that one end or two ends of institute's dress in central electric water heater has the employing of eduction rod nonmetallic outer There is nonmetallic plug 6 shell electrothermal tube, termination, and eduction rod 1 passes through outside the protruded tube of plug 6, in non-metal shell There is 1 or more heating wire 3, have non-metallic insulation thing 10 to be isolated between heating wire；In non-metal shell, There are magnesia powder or non-metallic insulation thing or air 4, the diameter that Fig. 4 heating wire is often enclosed presses close to tube wall, can be by electricity Heated filament is bonded on tube wall.

Due to heating wire 3 can dry combustion method in atmosphere, therefore can be directly installed in non-metal shell, if with oxidation When magnesium powder is filled, the position of heating wire will not move.

Fig. 2 to Fig. 4 is in blind hole non-metallic pipe 8, to load heating wire, and heating wire is in non-metallic pipe Dry combustion method in air, this kind of structure, the eduction rod in blind hole one end will bend turns back to the other end.

To realize double insulation, can again arrange between metal or non-metal electric heating silk 3 and non-metallic pipe 7 or 8 One layer of non-metallic pipe.

Fig. 5 to Fig. 7 is equipped with non-metal shell the central heater structure chart for having the electrothermal tube 11 of heating wire, Fig. 5, Fig. 7 outlet pipeline is provided with the out-of-date i.e. water-heating device 17 of current, is having the container of intake-outlet Electrothermal tube 11 is housed, electrothermal tube must be connected during water outlet in 18；Fig. 6 middle and upper parts arrange an electrothermal tube 11, Multi-form electrothermal tube is housed in Fig. 7.

Claims

1. equipped with the central electric water heater of the electrothermal tube for having heating wire in non-metallic pipe, it is characterised in that：Water tank by Metal or nonmetallic making, the electrothermal tube (11) for having heating wire in built-in non-metallic pipe：Be in non-metallic pipe or Claim in shell (7), equipped with heating wire (3) and magnesia powder or non-metallic insulation thing or air (4), draw Rod (1) is stretched to outside pipe by the nonmetallic plug in two ends (6), and becoming has the electric heating of heating wire in non-metal shell Pipe (11)；Or in blind hole non-metallic pipe (8) built with heating wire (3), also magnesia powder or nonmetallic Insulant or air (4), heating wire curves U-shaped in pipe, makes 2 eduction rods (1) at one end, and leads to The nonmetallic plug (6) for crossing unlimited one end is stretched to outside pipe, and becoming has the electrothermal tube of heating wire in non-metal shell (11)；The heating wire (3) is the dry combustion method in non-metallic pipe (7) or (8) interior air.

2. according to claim 1 equipped with the central electric water heater of the electrothermal tube for having heating wire in non-metallic pipe, It is characterized in that：Outlet pipeline is provided with the out-of-date i.e. water-heating device (17) of current, is having intake-outlet Electrothermal tube (11) is housed in container (18).

3. according to claim 1 equipped with the central electric water heater of the electrothermal tube for having heating wire in non-metallic pipe, It is characterized in that：In straight-through non-metallic pipe (7) or blind hole non-metallic pipe (8) open end bottom, equipped with open circuit Device (12), the chopper, be one end be two tinsels that are exposed and isolating, the other end and control circuit The control element connection of plate.