CN2758675Y

CN2758675Y - Defrosting deodoring electrothermic wire heating pipe for refrigerator

Info

Publication number: CN2758675Y
Application number: CN 200420109707
Authority: CN
Inventors: 杨瑞源; 许友良
Original assignee: Individual
Current assignee: Individual
Priority date: 2004-11-10
Filing date: 2004-11-10
Publication date: 2006-02-15
Anticipated expiration: 2014-11-10

Abstract

The utility model relates to a defrosting and odor removing electric heating wire heating pipe for a refrigerator, which is provided with an inner layer pipe and an outer layer pipe, wherein the inner part of the inner layer pipe is provided with electric heating wires. Both ends of the inner layer pipe and the outer layer pipe are respectively provided with end sleeves which are provided with expanding cavities inside. Both of the two ends of the inner layer pipe are respectively provided with a baffle. Both ends of each electric heating wire are respectively connected with connecting blocks and thread out from the baffles and end sleeve centers by a connection conducting wire. The surface of the outer layer pipe is coated with an odor removing catalyst coating. Odor in the refrigerator can be adsorbed in the state of low temperature. In heating and defrosting high temperature, the adsorbed odor is decomposed and is reduced to an initial state by catalyst to enable the original single defrosting function to simultaneously obtain the odor removing function. The end sleeves integrally designed can fix and close the inner layer pipe and the outer layer pipe and fixedly seal lead-out wires of the electric heating wires. The utility model simultaneously completes installation, fixation and sealing assembly and is convenient for intensifying production. The utility model reduces manufacture cost and has the functions of impact resistance and bursting resistance.

Description

Refrigerator defrosting deodorization electrothermal silk heating tube

Technical field

The utility model relates to refrigerator, particularly a kind of dual-purpose heating wire heating tube of defrosting deodorizing that is applicable to the refrigerator of inflammable and explosive refrigeration working medium.

Background technology

Along with the continuous reinforcement of people's environmental consciousness, in the past the refrigerator refrigeration working medium fluorine Lyons of adopting gradually by novel refrigerant for example 134A, 600A replace, and be used widely.The New Refrigerating working medium of using is flammable gas-liquid at present, be difficult at ordinary times guarantee in the refrigerator refrigeration system refrigeration working medium leakage situation not to take place, when in case the working medium of releasing reaches finite concentration, it contacts with the defrosting heat-generating pipe that produces high heat, because the heat-generating pipe surface temperature is higher than the ignition point of refrigeration working medium, heater has just become burning things which may cause a fire disaster, and then causes burning or explosion accident.

Too high and glass bushing is cracked easily at the surface temperature of heating tube, expose the situation of red as fire heater strip, the infrared heater of double glass tube has appearred on the market adopting, in the hope of reducing the ignition point that the heating tube surface temperature makes it to be lower than flammable refrigeration working medium, and strengthened the safety coefficient of anti-crushing, but also produced because double glass tube structure causes the intermediate layer air by a large amount of heating back thermal expansion to be taken place thereupon, caused new unsafe factor.So someone holes on the tube wall of this sealing or stay seam on pipe cap, the expanding gas that produces when allowing heating well discharges, the structure that this kind is similar to valve can not really reach the effect of check valve, because having, gas to have into, flammable refrigeration working medium probably enters into the glass tube internal layer, so danger still exists.

In addition, only there is the heater of single defrost function can not satisfy the needs of deodorizing in the refrigerator.

Summary of the invention

Task of the present utility model provides a kind of refrigerator with defrosting deodorization electrothermal silk heating tube, and it has solved that flammable refrigeration working medium in the present refrigerator contact with high-temperature heating pipe and glass bushing easy cracked concurrent make trouble event and heating tube only have the problem of defrost function.

The technical solution of the utility model is as follows:

A kind of refrigerator defrosting deodorization electrothermal silk heating tube, it has internal layer and outer tube, heating wire is housed in inner tube, two ends of described inner tube and outer tube are equipped with the coaxial end cover that inner tube and outer tube are separated respectively, be provided with expansion chamber in the end cover, expansion chamber be provided with the ectonexine pipe between the expansion chamber inlet that is communicated with of air layer, two ends of inner tube are equipped with baffle plate respectively, heating wire two ends connect coupling block respectively and pass from baffle plate and end cover center by connecting conducting wire; The surface-coated of described outer tube has one deck deodorizing catalyst coat.

Refrigerator of the present utility model adopts the bimetallic tube technology that seals with defrosting deodorization electrothermal silk heating tube, does not establish air layer leak and pipeline, thereby has stopped " internal and external exchange ".Work the mischief in order to prevent the air layer thermal expansion, adopt the intensity of thick-walled quartz glass tubes own, and design has the end cover of expansion chamber to receive the gas of expansion with reinforced pipe.The end cover of this integrated design is not only fixing and sealed the ectonexine pipe, and fixes and sealed the heating wire lead-out wire; Both finished installation, fixing and sealing assembling simultaneously, convenient again intensification is produced, and has reduced production cost, has the function of protecting against shock, anti-explosion.

Heating tube outer surface of the present utility model is coated with active catalytic layer catalyst, it is the deodorizing catalyst coat, peculiar smell in the adsorbable refrigerator under low-temperature condition, high temperature in the heating defrosting reaches under 110 ℃ of states, the peculiar smell of absorption is decomposed and make media reductive arrive original state, the defrosting of former simple function is become have deodorization functions simultaneously concurrently.The utility model utilization when defrosting body heats up to finish and decomposes peculiar smell and catalyst recovers activation automatically, does not produce other side effect during Catalytic Layer work, and environment is had no effect, and has the characteristics of safe and reliable, good deodorization effect, longer duration.

Description of drawings

Fig. 1 is the structural representation of refrigerator of the present utility model with a preferred embodiment of defrosting deodorization electrothermal silk heating tube.

Fig. 2 is the structural representation of another preferred embodiment of the utility model heating tube.

Fig. 3 is the end nested structure schematic diagram in the utility model heating tube.

The specific embodiment

Referring to Fig. 1 to Fig. 3, a kind of refrigerator of the present utility model has inner tube 1 and outer tube 2 with defrosting deodorization electrothermal silk heating tube, and this inner tube 1 and outer tube 2 can be glass tubes.Heating wire 3 is housed in inner tube 1.Heating wire 3 also can seal in interior pipe, extracts inner air tube out, fills into inert gas.

Two ends of inner tube 1 and outer tube 2 are equipped with coaxial end cover 4 respectively, and end cover 4 separates inner tube 1 and outer tube 2.End cover 4 is silicon rubber end covers, utilizes the good physical of silicon rubber to receive the gas of expansion.Be provided with retractable expansion chamber 41 in the end cover 4, expansion chamber 41 is provided with expansion chamber inlet 42, and expansion chamber inlet 42 is communicated with air layer 5 between the ectonexine pipe.Being no gap between silicon rubber end cover 4 and the ectonexine pipe 1,2 closely cooperates.

Two ends of inner tube 1 are equipped with baffle plate 6 respectively, make inner tube 1 location.Heating wire 3 two ends connect coupling block 7 respectively, connect connecting conducting wire 8 again, and connecting conducting wire 8 passes from baffle plate 6 and end cover 4 centers.In Fig. 2, coupling block 7 connects porcelain terminal 9, connects connecting conducting wire 8 again, and connecting conducting wire 8 passes from baffle plate 6 and end cover 4 centers.The inner tube 1 of Fig. 2 is a pipe in the enclosed type, and heating wire 3 is closed by interior pipe quartz glass, has stopped the expansion of interior pipe inner air layer 5 thus, has reduced the oxidation rate of heating wire, helps increasing the service life.In addition, heating wire 3 also can directly be connected (not shown) by the porcelain terminal 9 that seals with connecting conducting wire 8.

The surface-coated of outer tube 2 has one deck deodorizing catalyst coat 10.This coating 10 can be adsorbed peculiar smell in the refrigerator at low temperatures, can decompose adsorbed peculiar smell after the heating and be reduced to original state.

End cartridge clip 11 is equipped with in the terminal outer ring of end cover 4.The terminal inner ring wall of end cover 4 is provided with toothed projections 43, plays the effect of check valve, the more perfect anti-leak function of expansion chamber 41.As shown in Figure 1, the set toothed projections 43 of end cover 4 inwalls can be the corrugated arrangement.As shown in Figures 2 and 3, the set toothed projections 43 of end cover 4 inwalls also can be arranged askew, and it can make the more difficult effusion of air in the expansion chamber 41.

Heating tube of the present utility model is placed in the below of evaporator of refrigerator, and when refrigerator was in refrigeration work, the Catalytic Layer 10 on outer tube 2 surfaces was adsorbed peculiar smell in the refrigerator under low-temperature condition; When refrigerator was in defrost work, heating voltage was applied to heating wire 3 by connecting conducting wire 8 and coupling block 7, produced high heat, and rapidly by inner tube 1, air layer 5 and outer tube 2 heating fumigators, had played the defrost effect.

Owing to adopt bimetallic tube, make outer tube 2 surface temperatures be lower than the ignition point of refrigeration working medium, can not take place on fire even the refrigeration working medium of refrigerator internal leakage touches tube wall yet, because heating tube integral body is sealed, heated expanded air enters in the expansion chamber 41 by the liberation port on the end cover 4, expansion chamber 41 is heaved, finally reached air pressure balance.Defrost finishes, the heating tube outage, and air layer 5 cools down naturally, and the air of expansion shrinks, and expansion chamber 41 restores.

In outer tube 2 heating processes, Catalytic Layer 10 is at high temperature decomposed the peculiar smell of absorption and is reduced into original state simultaneously, so just can make original single defrosting device for refrigerator become the function that has deodorizing simultaneously concurrently, and safe and reliable, energy-conservation, need not increase deodorizing equipment.

Claims

1. a refrigerator is with defrosting deodorization electrothermal silk heating tube, it has internal layer and outer tube, heating wire is housed in inner tube, it is characterized in that, two ends of described inner tube and outer tube are equipped with the coaxial end cover that inner tube and outer tube are separated respectively, be provided with expansion chamber in the end cover, expansion chamber be provided with the ectonexine pipe between the expansion chamber inlet that is communicated with of air layer, two ends of inner tube are equipped with baffle plate respectively, and heating wire two ends connect coupling block respectively and pass from baffle plate and end cover center by connecting conducting wire; The surface-coated of described outer tube has one deck deodorizing catalyst coat.

2. refrigerator according to claim 1 is characterized in that with defrosting deodorization electrothermal silk heating tube the end cartridge clip is equipped with in the terminal outer ring of described end cover.

3. refrigerator according to claim 1 and 2 is characterized in that with defrosting deodorization electrothermal silk heating tube the terminal inner ring wall of described end cover is provided with toothed projections.

4. refrigerator according to claim 3 is characterized in that with defrosting deodorization electrothermal silk heating tube described toothed projections is corrugated and arranges.

5. refrigerator according to claim 3 is characterized in that with defrosting deodorization electrothermal silk heating tube described toothed projections is arranged askew.

6. refrigerator according to claim 1 is characterized in that with defrosting deodorization electrothermal silk heating tube described end cover is a silicon rubber end cover.