CN207716638U - A kind of PTC water heaters having waterproof anti-leakage function - Google Patents

Abstract

The utility model discloses a kind of PTC water heaters having waterproof anti-leakage function, including metal tube, PTC electrical heating elements in metal tube, electrode slice and the insulating film outside electrode slice, the lead-out wire except metal tube one end and two layers of rubber seal plug at metal tube both ends are connect and extended to electrode slice, it is placed in metal tube end mouth, there is gap between two layers of rubber seal plug, the outer end of two layers of rubber seal plug has spacing with metal tube end mouth, the outer end of two layers of rubber seal plug is interior equipped with fluid sealant with the spacing of metal tube end mouth, it further include the metal foil being set between metal tube and insulating film, it is connected with the one end of metal tube, and extend to the ground wire except metal tube one end, it is coated on outside metal tube, outside fluid sealant, and form the insulating jacket of all-sealed structure.The utility model reduces requirement of the PTC water heaters to use environment to improve the security performance of PTC water heaters.

Description

A kind of PTC water heaters having waterproof anti-leakage function

Technical field

The utility model is related to a kind of PTC water heaters, having waterproof anti-leakage function more specifically to a kind of PTC water heaters.

Background technology

Traditional PTC water heater basic systems generally comprise a metal tube, and PTC electric heating members are arranged in metal tube Part, electrode and insulating film are filled in the end of metal tube with sealing-plug, are then sealed and are filled with fluid sealant again.Moist or In the case where there is water immersion, the both ends of metal tube are susceptible to cracking phenomena, and water proofing property is poor, to generate security risk.

As shown in Figure 1, " a kind of water proof type ptc heater " disclosed in existing publication number CN 204014120U, including： Metal tube 4, the PTC heating elements 1 being arranged in metal tube 4, electrode 2 and the insulating film 3 for being placed in 2 outside of electrode, connects with electrode 2 The sealing structure at 4 both ends 41,42 of the extraction wire 5 except 4 one end 41 of metal tube and metal tube is connect and extends to, In, the sealing structure at 4 both ends 41,42 of the metal tube is multi-layer sealing structure respectively, each metal tube end it is multiple close Seal structure includes：Two layers of rubber seal plug 8, is placed in metal tube end mouth, sealing metal tube end, two layers of rubber seal plug 8 Between have the gap, there are gap, the end of interior end in contact insulating film 3 in the outer end of two layers of rubber seal plug 8 with metal tube end mouth；It is high Warm silica gel 7 riddles in the gap between two layers of rubber seal plug 8；Fluid sealant 6 riddles the outer end of two layers of rubber seal plug 8 In the spacing of metal tube end mouth, two layers of rubber seal plug 8 is sealed.

Although above-mentioned patent has been filled up to waterproof effect by two layers of sealing-plug, high-temperature silica gel and fluid sealant, During routine use, resident is tap water in domestic water, and contains CL in tap water^-Equal corrosive substances, especially in height In the case of temperature, corrosion phenomenon is more serious, and in being used for a long time, this corrosion phenomenon can allow the shell of product by serious corruption Erosion so that metal tube is contacted with water, and user is caused to generate serious security risk.

Utility model content

In view of the above defects of the prior art, the purpose of this utility model is to provide one kind to have waterproof anticreep The PTC water heaters of function reduce PTC water heaters and are wanted to use environment to improve the security performance of PTC water heaters It asks.

To achieve the above object, the utility model adopts the following technical solution：

A kind of PTC water heaters having waterproof anti-leakage function, including metal tube, the PTC electricity in metal tube add Thermal element, electrode slice and the insulating film outside electrode slice connect with electrode slice and extend to except metal tube one end Lead-out wire and the multi-sealing structure at metal tube both ends, multi-sealing structure include two layers of rubber seal plug, are placed in metal In tube end mouth, sealing metal tube end has gap, outer end and the gold of two layers of rubber seal plug between two layers of rubber seal plug Belonging to tube end mouth has a spacing, the end of interior end in contact insulating film, equipped with high temperature silicon in the gap between two layers of rubber seal plug Glue is equipped with fluid sealant in the outer end of two layers of rubber seal plug and the spacing of metal tube end mouth, further include be set to metal tube with absolutely Metal foil between velum is connected with the one end of metal tube, and extends to the ground wire except metal tube one end, is coated on Outside metal tube, outside fluid sealant, and form the insulating jacket of all-sealed structure.

The insulating jacket is made of resistant material.

The electrode slice, insulating film, metal tube and insulating jacket length there are following relationships：

If the length of electrode slice is L2, the length of insulating film is L3, and the length of metal tube is L4, and the length of insulating jacket is L5, then：

L2 ＜ L3 ＜ L4 ＜ L5.

The ground wire is set to the same end of metal tube with lead-out wire.

In the above technical solution, a kind of PTC water having waterproof anti-leakage function provided by the utility model adds Hot device, insulating jacket are made of resistant material, it is made to have good anti-corrosion sexual function, are contained to be directed in tap water CL^-Equal corrosive substances, in the case of a high temperature, the more serious situation of corrosion phenomenon, and the both ends of insulating jacket use Ultrasonic sealing has excellent water resistance, though PTC water heater products shell seriously by corrosion the case where Under, insulating jacket also can be such that metal tube thoroughly completely cuts off with water, improve the safety of PTC water heater products.In addition, ground connection Line can ensure that electric current is not present in the water in metal tube, and imperfect earth is caused even if being grounded in installation or working long hours, by Insulation sleeve external water will not be made to charge because heating tube is leaked electricity in the high insulation resistance and corrosion resistance of insulation sleeve, to ensure PTC The personal safety of water heater end user.

Description of the drawings

Fig. 1 is the structural schematic diagram of existing ptc heater；

Fig. 2 is the structural schematic diagram of the utility model.

Specific implementation mode

The technical solution of the utility model is further illustrated with reference to the accompanying drawings and examples.

Shown in Fig. 2, a kind of PTC water heaters having waterproof anti-leakage function provided by the utility model, Including metal tube 10, the PTC electrical heating elements 11, electrode slice 12 and the insulation set on 12 outside of electrode slice that are set in metal tube 10 Film 13 connect with electrode slice 12 and extends to 10 both ends of two lead-out wires 14 and metal tube except 10 one end of metal tube Multi-sealing structure, multi-sealing structure includes two layers of rubber seal plug 15, is placed in 10 end of metal tube mouthful, sealing metal 10 end of pipe has gap, outer end and 10 end of metal tube mouthful of two layers of rubber seal plug 15 between two layers of rubber seal plug 15 With spacing, the end of interior end in contact insulating film 13 is equipped with high-temperature silica gel in the gap between two layers of rubber seal plug 15, two layers Fluid sealant is equipped in the outer end of rubber seal plug 15 and the spacing of 10 end of metal tube mouthful, above-mentioned is prior art part, herein Just repeat no more.Unlike the prior art, further include the metal foil 16 being set between metal tube 10 and insulating film 13, make Insulating film 13 can also achieve the effect that waterproof.

Preferably, further including ground wire 17, ground wire 17 is connected with the one end of metal tube 10, and extends to metal tube 10 Except one end, which can ensure the water in PTC water heaters, and there is no electric currents, to ensure the person of user Safety.

Preferably, further including the insulation sleeve being coated on outside metal tube 10 and outside the fluid sealant at 10 both ends of metal tube Layer 18, and be coated on the insulating jacket 18 outside the fluid sealant at 10 both ends of metal tube and use ultrasonic sealing, it is formed hermetically sealed Structure has good water resistance, and insulating jacket 18 is made of resistant material, so that PTC water heaters is had good Good anticorrosive property function, even if in the case where the shell of PTC water heaters is seriously corroded, which can also So that metal tube 10 is thoroughly completely cut off with water, improves the safety in utilization of PTC water heaters.

Preferably, the electrode slice 12, insulating film 13, metal tube 10 and insulating jacket 18 length exist with ShiShimonoseki System：

If the length of electrode slice 12 is L2, the length of insulating film 13 is L3, and the length of metal tube 10 is L4, insulating jacket 18 Length be L5, then：

L2 ＜ L3 ＜ L4 ＜ L5.

Wherein, the length structure of L2, L3, L4 can make two layers of rubber seal plug 15 and high-temperature silica gel be deep into PTC electricity 13 end of insulating film of heating element 11, it is sufficiently sealed with 10 end surface of internal cavity of metal tube, at another high-temperature silica gel close adhesion In two layers of rubber seal plug 15 of its left and right layer, and will not crack at high temperature；And the length structure of L5 can be by metal tube 10 be coated on completely in, so that it is had good waterproof, anti-corrosion, leakproof electrical property.

Preferably, the ground wire 17 and two lead-out wires 14 may be contained within the same end of metal tube 10, can be convenient for Installation, the dismounting at PTC water heaters scene.

Those of ordinary skill in the art it should be appreciated that more than embodiment be intended merely to illustrate that this practicality is new Type, and be not used as the restriction to the utility model, as long as in the spirit of the utility model, to the above Variation, the modification of embodiment will all be fallen in the Claims scope of the utility model.

Claims (4)

1. a kind of PTC water heaters having waterproof anti-leakage function, including metal tube, the PTC electrical heating being set in metal tube Element, electrode slice and the insulating film outside electrode slice connect with electrode slice and extend to drawing except metal tube one end The multi-sealing structure at outlet and metal tube both ends, multi-sealing structure include two layers of rubber seal plug, are placed in metal tube In end mouthful, sealing metal tube end has gap between two layers of rubber seal plug, the outer end of two layers rubber seal plug and metal Tube end mouth has a spacing, the end of interior end in contact insulating film, equipped with high-temperature silica gel in the gap between two layers of rubber seal plug, The outer end of two layers of rubber seal plug is interior equipped with fluid sealant with the spacing of metal tube end mouth, it is characterised in that：Further include being set to gold Belong to the metal foil between pipe and insulating film, is connected with the one end of metal tube, and extend to the ground connection except metal tube one end Line is coated on outside metal tube, outside fluid sealant, and forms the insulating jacket of all-sealed structure.

2. a kind of PTC water heaters having waterproof anti-leakage function as described in claim 1, it is characterised in that：Described Insulating jacket is made of resistant material.

3. a kind of PTC water heaters having waterproof anti-leakage function as described in claim 1, it is characterised in that：Described Electrode slice, insulating film, metal tube and insulating jacket length there are following relationships：

If the length of electrode slice is L2, the length of insulating film is L3, and the length of metal tube is L4, and the length of insulating jacket is L5, Then：

L2 ＜ L3 ＜ L4 ＜ L5.

4. a kind of PTC water heaters having waterproof anti-leakage function as described in claim 1, it is characterised in that：Described Ground wire is set to the same end of metal tube with lead-out wire.