CN202209783U

CN202209783U - Heat exchange device of electric water heater

Info

Publication number: CN202209783U
Application number: CN2011203388171U
Authority: CN
Inventors: 罗晴海
Original assignee: Individual
Current assignee: Individual
Priority date: 2011-09-09
Filing date: 2011-09-09
Publication date: 2012-05-02
Anticipated expiration: 2021-09-09

Abstract

The utility model discloses a heat exchange device of an electric water heater. The heat exchange device comprises an electric heating element, a heat exchange pipe is sheathed outside the electric heating element and comprises an outer pipe and an inner pipe sheathed in a cavity of the outer pipe, heat conducting liquid is injected in a cavity between the outer pipe and the inner pipe, and the electric heating element is arranged in the inner cavity of the inner pipe. The heat exchange device realizes the aim of heat exchange with the outside, and simultaneously, the electric heating element is separated from heated liquid by the heat exchange pipe, so that water and electricity of a product are separated, namely, the water and electricity separation is realized, the safety and reliability of the product are improved; and the electric heating element can not generate electrochemical action, therefore, the phenomenon of generation of scale and corrosion is fundamentally avoided, and the leakage of electricity is prevented basically.

Description

A kind of electric heater heat-exchange device

Technical field

The utility model relates to the technical field of electrical heating product, and detailed is a kind of heat-exchange device that is applied to electric heater.

Background technology

Use very extensively for the supply and demand of hot water, no matter the hot water of commercial Application cleans, bleachinges and dyeing, or water heater domestic. applications, that can make hot water; Also expediting the emergence of out water heater miscellaneous or boiler utensil thus on the market, is example with the pot-type boiler, and what early release the market is gas heater; Through burning petroleum gas, cold water is absorbed heat in through the pipeline that is burnt heat, be transformed into hot water and discharge; But because that water heater is installed in is indoor, and cause the phenomenon of the anthracemia of human body easily, simultaneously; Oil gas is non-renewable resources, and by country's use of advocating thriftiness, this makes the market share of the gas heater downhill path that worms; The substitute is emerging electric heater, utilize electric energy to substitute oil gas, is the behave of a big environmental protection and the trend of update.

Yet, current numerous electric heater, majority utilizes the flowing water in the heat-generating pipe heating water tank, and heat-generating pipe is to immerse for a long time in the water, and the structure of heat-generating pipe generally is outside heating wire, to be with stainless steel tube, is filled with the magnesium powder in the stainless steel tube with fixing heating wire; And for powerful electric heater, the efficient heat generation of required heat-generating pipe part is longer, usually with heat-generating pipe crooked in a row shape or even round pie.In addition, after stainless steel tube was bent, the surface of bending position can be by thinning; Heat-generating pipe is soaking for a long time in the course of work, often because during heating and water generation electrochemical action, the incrustation scale that accumulates on the heat-generating pipe will increase; And then cause stainless steel tube to be corroded; In the course of time, heat-generating pipe can occur breaking and produce leaky, and then jeopardizes user's personal safety.

Summary of the invention

Heat-generating pipe is immersed in the electric leakage situation in the water in the water heater in order to solve; The utility model provides a kind of electric heater heat-exchange device; It make electric heating body be heated fluid separation applications, promptly realize electricity separation, simultaneously also keep from heat the liquid corrosion electric heating body and avoid leaky.

Therefore; The utility model comprises electric heating body, and said electric heating body is set with heat-exchange tube outward, and said heat-exchange tube comprises outer tube and the interior pipe that is sleeved on the tube chamber of said outer tube; Be perfused with conductive fluid between said outer tube and the interior pipe, said electric heating body is installed in the inner chamber of said interior pipe.

Said electric heating body comprises heat pipe, and ceramic rod is installed in the heat pipe, is provided with heating wire in the said ceramic rod, is filled with insulating barrier between ceramic rod and the heat pipe.

The inner chamber of pipe footpath is greater than the internal diameter of heat pipe in said.

Said insulating barrier is the magnesium bisque.

Said heat pipe is a stainless steel tube.

Said heating wire is circumscribed with lead.

The end of said outer tube and the end of interior pipe are hermetically-sealed construction, are provided with the end plate that is used to seal conductive fluid between the port of said outer tube and the port of interior pipe.

Said conductive fluid is the liquid that boiling point is low, latent heat is big.

The beneficial effect of the utility model is: the utility model is set with heat-exchange tube outside electric heating body, is provided with conductive fluid between the outer tube of heat-exchange tube and the interior pipe, in the inner chamber of managing in heater is installed on; The heat of electric heating body transfers to the external world through interior pipe, conductive fluid and outer tube and is heated liquid, during, realized external heat exchange purpose; In this simultaneously; Electric heating body is through heat-exchange tube and be heated fluid separation applications, makes the water power of product be able to separate, and promptly realizes electricity separation; Improve the safety of products reliability; Make electric heating body can not produce electrochemical action simultaneously, essence is avoided producing incrustation scale and is produced corrosion phenomenon, has stopped leaky basically.

Description of drawings

Fig. 1 is the structure cutaway view of the utility model.

Fig. 2 is the profile of electric heating body.

Fig. 3 is the practical implementation figure that the utility model is applied to the electric heater water tank.

The specific embodiment

See also shown in Figure 1; The utility model is provided with electric heating body 1; The said electric heating body 1 outer heat-exchange tube 2 that is set with, said heat-exchange tube 2 comprises outer tube 21 and the interior pipe 22 that is sleeved on the tube chamber 211 of said outer tube 21, is perfused with conductive fluid 23 between said outer tube 21 and the interior pipe 22; Said electric heating body 1 is installed in the inner chamber 221 of said interior pipe 22; The end of the end of said outer tube 21 and interior pipe 22 is hermetically-sealed construction, be provided with the end plate 24 that is used to seal conductive fluid 23 between the port of the port of said outer tube 21 and interior pipe 22, and said conductive fluid 23 is the liquid that boiling point is low, latent heat is big.

As shown in Figure 2, said electric heating body 1 comprises heat pipe 11, and said heat pipe 11 is a stainless steel tube; According to the footpath, chamber of the inner chamber 221 of pipe 22 in said internal diameter greater than heat pipe 11; Be convenient to electric heating body 1 and in the inner chamber 221 of interior pipe 22, install, ceramic rod 12 is installed in the heat pipe 11, be provided with heating wire 13 in the said ceramic rod 12; Be filled with insulating barrier 14 between ceramic rod 12 and the heat pipe 11; Said insulating barrier 14 is the magnesium bisque, makes complete filling, the said ceramic rod 12 of vertical fixing in heat pipe 11 through this magnesium bisque, and said heating wire 13 is circumscribed with lead 4.

See also shown in Figure 3ly, be perfused with conductive fluid 23, in electric heating body 1 is installed in the inner chamber 221 of pipe 22 according to the cavity between said outer tube 21 and the interior pipe 22; Thereby, making heating wire 13 heating powers in the heater 1, the heat of generation is through heat pipe 11, be passed to conductive fluid 23 through interior pipe 22 heat; Because said conductive fluid 23 is the liquid low for boiling point, that latent heat is big, so conductive fluid 23 is heated to boiling very soon, and heat is passed in the water tank A that is loaded with heated liquid through outer tube 21 heat again; Heat is absorbed by the heated liquid in the water tank A, finally realizes the effect of Fast Heating, in addition; Because heating wire 13 is installed in the ceramic rod 12, the heat that pottery absorbs makes the temperature meeting increasingly high, and when outage; Ceramic rod 12 self EMS memories still have higher temperature, therefore, utilize the surplus temperature of ceramic rod 12; Continue to let conductive fluid 23 seethe with excitement, on the contrary, the hot water temperature of storage tank A also heats to conductive fluid realization back feeding formula; Make conductive fluid 23 can keep the constantly boiling of longer time, more show the energy-saving effect of this device.So the utility model also need be provided with Temperature Detector, monitor the actual temp of heat-generating pipe constantly, avoid the too high problem of temperature to occur.

Meanwhile,, can effectively avoid contacting of heater 1 and heated liquid, avoid liquid that heat pipe 11 surfaces of heater 1 are corroded and the electric leakage problem that causes through being provided with the structure of conductive fluid 23 between outer tube 21 and the interior pipe 22.

According to above-mentioned explanation; And combine accompanying drawing as the utility model preferred embodiments, right, the equivalent embodiment of other of the utility model is not limited thereto; Understand by said practical implementation, above-mentioned embodiment has disclosed the concrete function and the architectural characteristic of the utility model.

Claims

1. electric heater heat-exchange device; Comprise electric heating body (1); It is characterized in that: the outer heat-exchange tube (2) that is set with of said electric heating body (1); Said heat-exchange tube (2) comprises outer tube (21) and is sleeved on the interior pipe (22) of the tube chamber (211) of said outer tube (21), and the cavity between said outer tube (21) and the interior pipe (22) is perfused with conductive fluid (23), said electric heating body (1) be installed in said in the inner chamber (221) of pipe (22).

2. electric heater heat-exchange device according to claim 1; It is characterized in that: said electric heating body (1) comprises heat pipe (11); Ceramic rod (12) is installed in the heat pipe (11); Be provided with heating wire (13) in the said ceramic rod (12), be filled with insulating barrier (14) between ceramic rod (12) and the heat pipe (11).

3. electric heater heat-exchange device according to claim 2 is characterized in that: footpath, the chamber of the inner chamber (221) of pipe (22) is greater than the internal diameter of heat pipe (11) in said.

4. electric heater heat-exchange device according to claim 2 is characterized in that: said insulating barrier (14) is the magnesium bisque.

5. electric heater heat-exchange device according to claim 2 is characterized in that: said heat pipe (11) is a stainless steel tube.

6. electric heater heat-exchange device according to claim 2 is characterized in that: said heating wire (13) is circumscribed with lead (4).

7. electric heater heat-exchange device according to claim 1 and 2; It is characterized in that: the end of the end of said outer tube (21) and interior pipe (22) is hermetically-sealed construction, is provided with the end plate (24) that is used to seal conductive fluid (23) between the port of the port of said outer tube (21) and interior pipe (22).

8. according to the described electric heater heat-exchange device of each claim of claim 1 to 6, it is characterized in that: said conductive fluid (23) is the liquid that boiling point is low, latent heat is big.