CN219141222U - Double-layer tube structure of defrosting heater of refrigerator - Google Patents

Abstract

The utility model discloses a double-layer tube structure of a defrosting heater of a refrigerator, which comprises a double-layer tube structure main body of the heater, wherein electric heating wire outgoing wires are arranged at two ends of the double-layer tube structure main body of the heater, a double-layer tube structure is arranged in the middle of the electric heating wire outgoing wires, and sealing end sleeve structures are arranged at two ends of the double-layer tube structure. The outer layer pipe and the heat preservation inner layer pipe adopt a sealed double-layer pipe technology, and an air layer leakage hole and a pipeline are not arranged, so that the internal and external communication is avoided, the outer layer pipe and the heat preservation inner layer pipe adopt thick-wall quartz glass pipes to strengthen the strength of the inner layer pipe, the surface of the outer layer pipe is coated with an active catalytic layer catalyst, namely a deodorizing catalyst coating, peculiar smell in a refrigerator can be adsorbed in a low-temperature state, the adsorbed peculiar smell is decomposed and the catalyst is reduced to an initial state in a high-temperature state of heating and defrosting, and the device has a deodorizing function.

Description

Double-layer tube structure of defrosting heater of refrigerator

Technical Field

The utility model belongs to the technical direction of double-layer pipes of heaters, and particularly relates to a double-layer pipe structure of a defrosting heater of a refrigerator.

Background

Along with the continuous enhancement of environmental awareness, the refrigerator refrigeration working medium Freon is gradually replaced by a novel refrigerant, and is widely used. The novel refrigeration working medium used at present is combustible gas and liquid, so that the situation that the refrigeration working medium leaks in a refrigerator refrigeration system is difficult to ensure at ordinary times, once the leaked working medium reaches a certain concentration, the leaked working medium contacts with a defrosting heating tube which generates high heat, and as the surface temperature of the heating tube is higher than the ignition point of the refrigeration working medium, the heater becomes a fire source, and further combustion or explosion accidents are initiated. This phenomenon is a problem to be solved by those skilled in the art, and therefore, the present utility model proposes a double-layered tube structure of a defrosting heater for a refrigerator.

In the prior art, a chinese patent document with publication number CN204612319U and publication date 2015, 09 and 02 is proposed to solve the above technical problems, and the technical scheme disclosed in the patent document is as follows: the utility model provides a vacuum quartz tube heater for refrigerator defrosting, includes quartz glass tube, power and heater strip, the quartz glass tube has the double glazing tube structure of evacuation processing, penetrates the heater strip in the quartz glass tube, the heater strip is connected with the electric wire through wire crimping pipe at quartz glass tube both ends, electric wire connection is on the power, the quartz glass tube surface is equipped with and is used for carrying out the insulating cover of heat retaining to the quartz glass tube, be equipped with the mounting hole on the insulating cover, be connected with the heat pipe that transmits the heat in the quartz glass tube to the assigned position on the mounting hole.

In order to solve the problem that the heating wire in the defrosting heater is always in a heating state due to high heat dissipation speed of the defrosting heater, the prior art adopts a mode that a quartz glass tube, a heat insulation sleeve and a heat conduction tube rubber cap are mutually matched for treatment, but the situation that the sealing performance of the rubber cap is poor can also occur, and then the problem that the heating wire in the heating tube is contacted with external air is caused.

Disclosure of Invention

The utility model aims at solving the problems in the background technology by aiming at the double-layer tube structure of the defrosting heater of the refrigerator of the prior device.

In order to solve the technical problems, the utility model provides the following technical scheme: the double-layer tube structure of the defrosting heater of the refrigerator comprises a double-layer tube structure main body of the heater, wherein electric heating wire outgoing lines are arranged at two ends of the double-layer tube structure main body of the heater, a double-layer tube structure is arranged in the middle of each electric heating wire outgoing line, and sealing end sleeve structures are arranged at two ends of the double-layer tube structure; the double-layer tube structure comprises a double-layer tube unit and a heating unit, wherein the heating unit is arranged in the middle of the outgoing line of the heating wire, and the double-layer tube unit is arranged in the middle of the heating unit; the sealing end sleeve structure comprises an end cover unit and an expansion absorption unit, wherein the end cover unit is arranged at two ends of the double-layer pipe unit, and the expansion absorption unit is arranged at one side of the end cover unit.

The utility model further describes that the double-layer tube unit comprises an outer layer tube arranged in the middle of the outgoing line of the heating wire, the outer surface of the outer layer tube is coated with an active catalytic layer catalyst, namely a deodorizing catalyst coating, the deodorizing catalyst coating coated on the surface of the outer layer tube can adsorb peculiar smell in the refrigerator in a low-temperature state, and the adsorbed peculiar smell is decomposed and the catalyst is reduced to an initial state in a high-temperature state of heating and defrosting, so that the original single-function defrosting is changed into the deodorizing function.

The utility model further discloses that the double-layer pipe unit also comprises a heat-insulating inner layer pipe arranged inside the outer layer pipe, wherein the outer layer pipe and the heat-insulating inner layer pipe adopt a sealed double-layer pipe technology, and an air layer leakage hole and a pipeline are not arranged, so that internal and external communication is stopped.

The utility model further discloses that the heating unit comprises heating wires fixedly arranged between the heating wire outgoing lines, the heating wires are arranged in the heat-preservation inner layer tube, the outer layer tube and the heat-preservation inner layer tube are made of thick-wall quartz glass tubes to strengthen the strength of the heating wires, and the heating wires are connected with electricity through the heating wire outgoing lines to generate heat.

According to the utility model, the end cover unit comprises the end sleeves, the inner surfaces of the end sleeves are sleeved with the outer surfaces of the two ends of the outer layer tube, the center of each end sleeve is fixedly provided with the electric heating wire outgoing wire insulation fixing sleeve which is matched with the electric heating wire outgoing wire, the heat insulation inner layer tube has the heat insulation function on the electric heating wire, the heat dissipation speed of the quartz glass tube is effectively slowed down, continuous heating is carried out, defrosting is carried out, the working time of the heating wire is shortened, and the electricity consumption is reduced.

According to the utility model, the inner side surface of the end sleeve is fixedly provided with the first sealing gasket and the second sealing gasket respectively, the first sealing gasket is filled between the outer layer pipe and the heat-insulating inner layer pipe, the outer surface of the second sealing gasket is in contact with the inner surface of the heat-insulating inner layer pipe, the end sleeve not only fixes and seals the inner layer pipe and the outer layer pipe, but also fixes and seals the electric wire outgoing line, the electric wire outgoing line is fixed by the electric wire outgoing line insulation fixing sleeve, and the sealing performance of a port of the double-layer pipe is improved by matching the first sealing gasket and the electric wire outgoing line insulation fixing sleeve.

The utility model further discloses that the expansion absorption unit comprises an expansion gas eduction tube fixedly arranged on the inner wall of the end sleeve, an expansion cavity sleeve is fixedly arranged at the upper end of the expansion gas eduction tube, and the end sleeve is provided with the expansion gas eduction tube and the expansion cavity sleeve to absorb the expansion gas, so that the expansion absorption unit has the functions of impact resistance and explosion resistance.

Compared with the prior art, the utility model has the following beneficial effects: in the present utility model, the number of the components,

1. by the double-layer pipe structure, the outer layer pipe and the heat-insulating inner layer pipe adopt a sealed double-layer pipe technology, and an air layer leakage hole and a pipeline are not arranged, so that internal and external communication is stopped. The outer layer tube and the heat-insulating inner layer tube adopt thick-wall quartz glass tubes to enhance the strength, the surface of the outer layer tube is coated with an active catalytic layer catalyst, namely a deodorizing catalyst coating, peculiar smell in a refrigerator can be adsorbed in a low-temperature state, the adsorbed peculiar smell is decomposed and the catalyst is reduced to an initial state in a high-temperature state of heating and defrosting, the defrosting of the original single function is changed into the deodorizing function, the heating wire is connected with electricity through a heating wire outgoing line to generate heat, the heat-insulating inner layer tube has the heat-insulating effect on the heating wire, the heat-radiating speed of the quartz glass tube is effectively slowed down to continuously generate heat to defrost, the working time of the heating wire is shortened, and the electricity consumption is reduced;

2. through being provided with sealed pot head structure, the pot head has not only fixed and has sealed the inlayer pipe, has fixed and sealed the heating wire lead-out wire moreover, and the insulating fixed cover of heating wire lead-out wire is fixed the heating wire lead-out wire, cooperates first sealed pad and the insulating fixed cover of heating wire lead-out wire to increase the leakproofness of the port of double-deck pipe. Meanwhile, the installation, the fixation and the sealing assembly are completed, the intensive production is convenient, the production cost is reduced, and the end sleeve is designed with an expansion gas eduction tube and an expansion cavity sleeve to absorb the expansion gas, so that the end sleeve has the functions of impact resistance and explosion resistance.

Drawings

The accompanying drawings are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate the utility model and together with the embodiments of the utility model, serve to explain the utility model. In the drawings:

FIG. 1 is a schematic view of the overall structure of the present utility model;

FIG. 2 is a schematic illustration of the end cap of the present utility model shown disassembled;

FIG. 3 is a schematic exploded view of the present utility model;

fig. 4 is a schematic view of the end cap structure of the present utility model.

In the figure: 1. a heater double-layer tube structure main body; 11. a heating wire outgoing line; 2. a double-layer tube structure; 21. an outer layer tube; 22. an insulating inner layer tube; 23. heating wires; 3. a sealing end sleeve structure; 31. an end sleeve; 32. an insulation fixing sleeve of the electric heating wire outgoing line; 33. a first gasket; 34. a second gasket; 35. an expanded gas eduction tube; 36. and (5) expanding the cavity sleeve.

Detailed Description

The technical scheme of the present utility model is further described in non-limiting detail below with reference to the preferred embodiments and the accompanying drawings. It will be apparent that the described embodiments are only some, but not all, embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Referring to fig. 1-4, the present utility model provides the following technical solutions: the utility model provides a refrigerator defrosting heater double-deck tube structure, includes heater double-deck tube structure main part 1, and the both ends of heater double-deck tube structure main part 1 are provided with heating wire lead-out wire 11, and the middle part of heating wire lead-out wire 11 is provided with double-deck tube structure 2, and double-deck tube structure 2's both ends are provided with sealed pot head structure 3; the double-layer tube structure 2 comprises a double-layer tube unit and a heating unit, wherein the heating unit is arranged in the middle of the electric heating wire outgoing line 11, and the double-layer tube unit is arranged in the middle of the heating unit; the sealed end sleeve structure 3 comprises an end cover unit and an expansion absorption unit, wherein the end cover unit is arranged at two ends of a double-layer pipe unit, the expansion absorption unit is arranged at one side of the end cover unit, the double-layer pipe unit comprises an outer layer pipe 21 arranged in the middle of an electric heating wire outgoing line 11, the outer surface of the outer layer pipe 21 is coated with an active catalytic layer catalyst, namely a deodorizing catalyst coating, the double-layer pipe unit also comprises an inner heat-insulating layer pipe 22 arranged in the outer layer pipe 21, the outer layer pipe 21 and the inner heat-insulating layer pipe 22 adopt a sealed double-layer pipe technology, the outer layer pipe 21 and the inner heat-insulating layer pipe 22 adopt thick-wall quartz glass pipes to strengthen the self strength, and the deodorizing catalyst coating coated on the surface of the outer layer pipe 21 enables defrosting with the original single function to be changed into defrosting function with deodorizing function;

preferably, the heating unit includes heating wire 23 fixedly installed between heating wire outgoing lines 11, heating wire 23 sets up the inside at heat preservation inlayer pipe 22, end cover unit is including the pot head 31 that internal surface and outer surface in inlayer pipe 21 both ends cup jointed, the central fixed mounting of pot head 31 has the insulating fixed cover 32 of heating wire outgoing lines with heating wire outgoing lines 11 looks adaptation, heating wire 23 connects the electricity through heating wire outgoing lines 11 and generates heat, heat preservation inlayer pipe 22 carries out the heat retaining effect to heating wire 23, effectually slowed down quartz glass pipe's radiating rate and continuously generate heat and defrost, thereby reduce the operating time of heater strip.

Preferably, the inner side surface of the end sleeve 31 is fixedly provided with a first sealing pad 33 and a second sealing pad 34 respectively, the first sealing pad 33 is filled between the outer layer pipe 21 and the heat insulation inner layer pipe 22, the outer surface of the second sealing pad 34 is contacted with the inner surface of the heat insulation inner layer pipe 22, the expansion absorption unit comprises an expansion gas eduction pipe 35 fixedly arranged on the inner wall of the end sleeve 31, the upper end of the expansion gas eduction pipe 35 is fixedly provided with an expansion cavity sleeve 36, the end sleeve 31 not only fixes and seals the inner layer pipe and the outer layer pipe, but also fixes and seals the electric heating wire eduction wire, meanwhile, the installation, the fixing and the sealing assembly are completed, the intensive production is convenient, the production cost is reduced, and the end sleeve 31 is designed with the expansion gas eduction pipe 35 and the expansion cavity sleeve 36 so as to absorb the expansion gas, and has the functions of impact resistance and explosion resistance.

The working principle of the double-layer tube structure of the defrosting heater of the refrigerator is specifically described below.

As shown in fig. 1 to 4, firstly, the heating wire 23 is electrically heated by the heating wire outgoing wire 11, the heat-insulating inner tube 22 performs heat-insulating function on the heating wire 23 to enable the outer tube 21 to continuously heat for defrosting, then, the outer tube 21 and the heat-insulating inner tube 22 adopt sealed double-layer tube technology, the outer tube 21 and the heat-insulating inner tube 22 adopt thick-wall quartz glass tubes to strengthen the strength of the outer tube 21 and the heat-insulating inner tube 22, the surface of the outer tube 21 is coated with an active catalytic layer catalyst, the deodorizing function is simultaneously performed during defrosting, finally, the end sleeve 31 not only fixes and seals the inner tube and the outer tube, but also fixes and seals the heating wire outgoing wire, the sealing performance of the port of the double-layer tube is increased by matching the first sealing pad 33 and the heating wire outgoing wire insulation fixing sleeve 32, and the end sleeve 31 is designed with an expanding gas outgoing tube 35 and an expanding cavity sleeve 36 to absorb the expanding gas to prevent bursting.

In the description of the present utility model, it should be understood that the directions or positional relationships indicated by the terms "upper", "lower", "front", "rear", "left", "right", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present utility model, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

Finally, it should be pointed out that: the above embodiments are only for illustrating the technical solution of the present utility model, and are not limiting. Although the utility model has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may be modified or some technical features may be equivalently replaced, and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present utility model.

Claims (7)

1. The utility model provides a refrigerator defrosting heater double-deck tube structure, includes heater double-deck tube structure main part (1), the both ends of heater double-deck tube structure main part (1) are provided with heating wire lead-out wire (11), its characterized in that: the middle part of the electric heating wire outgoing line (11) is provided with a double-layer pipe structure (2), and two ends of the double-layer pipe structure (2) are provided with sealing end sleeve structures (3);

the double-layer tube structure (2) comprises a double-layer tube unit and a heating unit, wherein the heating unit is arranged in the middle of the electric heating wire outgoing line (11), and the double-layer tube unit is arranged in the middle of the heating unit;

the sealing end sleeve structure (3) comprises an end cover unit and an expansion absorption unit, wherein the end cover unit is arranged at two ends of the double-layer pipe unit, and the expansion absorption unit is arranged at one side of the end cover unit.

2. The double-layered tube structure of a defrosting heater for a refrigerator as claimed in claim 1, wherein: the double-layer tube unit comprises an outer tube (21) arranged in the middle of the electric heating wire outgoing line (11), and an active catalytic layer catalyst, namely a deodorizing catalyst coating, is coated on the outer surface of the outer tube (21).

3. The double-layered tube structure of a defrosting heater for a refrigerator as claimed in claim 2, wherein: the double-layer pipe unit also comprises a heat-insulating inner layer pipe (22) arranged inside the outer layer pipe (21).

4. A double-layered tube structure of a defrosting heater for a refrigerator as claimed in claim 3, wherein: the heating unit comprises heating wires (23) fixedly arranged between the heating wire outgoing lines (11), and the heating wires (23) are arranged in the heat-insulating inner-layer tube (22).

5. The double-layered tube structure of a defrosting heater for a refrigerator as claimed in claim 4, wherein: the end cover unit comprises an end cover (31) with the inner surface sleeved with the outer surfaces of the two ends of the outer layer pipe (21), and an electric heating wire outgoing wire insulation fixing sleeve (32) matched with the electric heating wire outgoing wire (11) is fixedly arranged in the center of the end cover (31).

6. The double-layered tube structure of a defrosting heater for a refrigerator as claimed in claim 5, wherein: the inner side surface of the end sleeve (31) is fixedly provided with a first sealing gasket (33) and a second sealing gasket (34) respectively, the first sealing gasket (33) is filled between the outer layer pipe (21) and the heat-insulating inner layer pipe (22), and the outer surface of the second sealing gasket (34) is in contact with the inner surface of the heat-insulating inner layer pipe (22).

7. The double-layered tube structure of a defrosting heater for a refrigerator as claimed in claim 1, wherein: the expansion absorption unit comprises an expansion gas eduction tube (35) fixedly arranged on the inner wall of the end sleeve (31), and an expansion cavity sleeve (36) is fixedly arranged at the upper end of the expansion gas eduction tube (35).

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