CN215453319U - Explosion-proof heating pipe - Google Patents

Abstract

The invention discloses an explosion-proof heating pipe, which relates to the field of defrosting of refrigerators and comprises a pipe body, an electric heating wire and a sealing cover, wherein the two ends of the pipe body are open, the electric heating wire penetrates through the pipe body, the sealing cover is in sealing connection with the two ends of the pipe body, the two ends of the electric heating wire are connected with a conducting wire, an exhaust hole which enables the pipe body to be communicated with the outside is formed in the sealing cover, a one-way ventilation assembly is arranged on the exhaust hole on the sealing cover and used for limiting outside air from entering the pipe body, and a metal heat conducting piece is arranged on the pipe body. The present application helps prevent explosion of the heating tube.

Description

Explosion-proof heating pipe

Technical Field

The invention relates to the field of defrosting of refrigerators, in particular to an anti-explosion heating pipe.

Background

When the refrigerator is used, the evaporator inside the refrigerator performs refrigeration operation, frost is easily condensed on the surface of the evaporator during the refrigeration operation, and the refrigeration effect of the evaporator is influenced, so that a heating pipe is usually installed in the refrigerator, the frost on the evaporator is removed, and the refrigeration effect of the evaporator is ensured.

The existing heating pipe is generally composed of a glass pipe and an electric heating wire, the electric heating wire penetrates through the glass pipe, sealing covers are mounted at two ends of the glass pipe, two ends of the electric heating wire are connected with a conducting wire, the conducting wire is used for supplying power and heating to the electric heating wire, then heat is conducted to an evaporator through the glass pipe, and defrosting operation of the evaporator is achieved.

In view of the above-mentioned techniques, the inventors have considered that there is an improvement in that the glass tube may be burst by an excessive gas pressure due to expansion of the gas inside the glass tube by heat.

Disclosure of Invention

In order to prevent the heating pipe from exploding, the application provides an explosion-proof heating pipe.

The application provides an explosion-proof heating pipe adopts following technical scheme:

the utility model provides an explosion-proof heating pipe, is open-ended body, heating wire and sealed lid including both ends, the heating wire is worn to establish in the body, sealed lid and body both ends sealing connection, the both ends of heating wire are connected with the wire, sealed covering is seted up and is made the exhaust hole of body and external intercommunication, sealed covering is located to be provided with the one-way subassembly of ventilating on the exhaust hole, restricts in the external air admission pipe body, be provided with the metal heat-conducting piece on the body.

Through adopting above-mentioned technical scheme, when in the heating process, gaseous receiving the thermal energy in the body, utilize the exhaust hole to make the gas of being heated discharge, help preventing that the gas of being heated constantly expands and lead to the body explosion, and utilize the one-way subassembly of ventilating, help preventing that external steam from getting into in the body, corrode the heating wire, help improving the life of heating wire.

Preferably, one side of the sealing cover, which is close to the pipe body, is provided with an annular groove, the pipe opening of the pipe body is in inserting fit with the annular groove of the sealing cover, the sealing cover is positioned in the annular groove and is provided with a first sealing ring, and the first sealing ring is tightly abutted to the groove wall of the annular groove and the outer wall of the pipe body.

Through adopting above-mentioned technical scheme, the annular groove that utilizes sealed lid is pegged graft with the body, realizes the fixed of body and sealed lid, utilizes first sealing washer simultaneously, helps improving the leakproofness between sealed lid and the body, helps preventing that steam from getting into in the body.

Preferably, one side of the sealing cover, which is close to the pipe body, is provided with an insertion part, the insertion part is in insertion fit with the pipe body, a second sealing ring is sleeved on the insertion part, the second sealing ring is abutted against the inner wall of the pipe body, and the exhaust hole is formed in the insertion part of the sealing cover.

Through adopting above-mentioned technical scheme, utilize grafting portion and the internal interpolation of body of sealed lid to connect, the cooperation ring channel helps pressing from both sides tight body, helps improving the fixed stability of body, utilizes the second sealing washer, helps further improving the leakproofness between body and the sealed lid.

Preferably, the sealing cover is provided with a cavity communicated with the outside, the exhaust hole is communicated with the cavity, the one-way ventilation assembly is arranged in the cavity and comprises a spring and a sealing element, one end of the spring is fixedly connected with the inner wall of the cavity, the other end of the spring is fixedly connected with the sealing element, and the sealing element is abutted against the exhaust hole.

Through adopting above-mentioned technical scheme, the spring is in compression state under normal conditions, can promote the sealing member and support tightly at exhaust hole department, seals the exhaust hole, receives the thermal energy back as the gas in the body, can pass through the exhaust hole, then the top moves the sealing member, and compression spring simultaneously for exhaust hole and cavity intercommunication, and then make the gas escape of being heated.

Preferably, the sealing cover is provided with a guide rod at the position of the vent hole, the guide rod is positioned in the cavity, the length direction of the guide rod is parallel to the telescopic direction of the spring, the sealing element is arranged to be a sealing block, and the sealing block is in insertion sliding fit with the guide rod.

Through adopting above-mentioned technical scheme, utilize the guide bar to play the effect of direction to the removal of sealing block, stability when helping improving the sealing block and removing.

Preferably, the heating wire is spirally arranged.

Through adopting above-mentioned technical scheme, the heating wire is the heliciform, has improved heating area, helps improving the heating effect.

Preferably, the tube body is arranged in a transparent manner.

Through adopting above-mentioned technical scheme, the body is transparent setting, helps the maintainer to observe the inside condition, the easy access.

Preferably, the sealing cover is painted with an insulating paint.

Through adopting above-mentioned technical scheme, sealed scribble the insulating varnish on the lid, improve the insulating nature of sealed lid, and then improve the holistic security of this heating pipe.

In summary, the present application includes at least one of the following beneficial technical effects:

the air expanded by heating in the tube body is timely exhausted by utilizing the exhaust hole, which is beneficial to preventing the tube body from exploding;

by means of the one-way ventilation assembly, external water vapor is prevented from entering the tube body to corrode the heating wire, and the service life of the heating wire is prolonged;

the guide rod and the sealing block are in inserted connection and matching, so that the stability of the sealing block during moving is improved.

Drawings

FIG. 1 is a cross-sectional view of the overall structure of an embodiment of the present application;

fig. 2 is an enlarged view of a in fig. 1, which mainly shows the structure of the one-way vent assembly.

Reference numerals: 1. a pipe body; 2. an electric heating wire; 3. a sealing cover; 31. an annular groove; 32. a plug-in part; 4. an exhaust hole; 5. a one-way vent assembly; 51. a spring; 52. a sealing block; 6. a metal heat-conducting member; 7. a first seal ring; 8. a second seal ring; 9. a cavity; 10. a guide rod.

Detailed Description

The present application is described in further detail below with reference to figures 1-2.

The embodiment of the application discloses an explosion-proof heating pipe.

Referring to fig. 1 and 2, the anti-explosion heating pipe includes that both ends are body 1 of opening setting, heating wire 2 and sealed lid 3, body 1 adopts that single crystal transparent quartz makes, body 1 is transparent setting promptly, heating wire 2 wears to establish in body 1, sealed lid 3 is provided with two, respectively with body 1's both ends sealing connection, the insulating paint has all been scribbled on two sealed surface of covering 3, guarantee sealed lid 3's insulating nature, the both ends and the wire electricity of heating wire 2 are connected, be used for heating wire 2 circular telegram heating, set up the exhaust hole 4 that makes body 1 and outside be linked together on the sealed lid 3, sealed lid 3 is provided with one-way subassembly 5 of ventilating in exhaust hole department, restriction external air gets into in the body 1.

In fact, utilize exhaust hole 4 in time with the body 1 in the gas outgoing of thermal expansion, help preventing the explosion of body 1, utilize one-way subassembly 5 of ventilating simultaneously, help preventing in external steam gets into body 1, and then help avoiding heating wire 2 to be corroded, help improving heating wire 2's life promptly.

Referring to fig. 1, the heating wire 2 is spirally disposed, so that the heating area of the heating wire 2 in the tube body 1 is increased, which helps to improve the heating effect of the heating wire 2.

Referring to fig. 1, a metal heat-conducting member 6 is arranged on the pipe body 1, the metal heat-conducting member 6 is set to be a plurality of hemispherical iron blocks, and the plurality of hemispherical iron blocks are uniformly bonded on the inner wall of the pipe body 1 by using glass cement, so that the improvement of the heat conduction speed is facilitated.

Since the two sealing caps 3 are identical in structure and shape, one of the sealing caps 3 and the end of the tubular body 1 connected thereto will now be explained:

referring to fig. 1 and 2, an annular groove 31 is formed in one side, close to the pipe body 1, of the sealing cover 3, an insertion portion 32 is formed in one side, close to the pipe body 1, of the sealing cover 3, an opening of the pipe body 1 is in insertion fit with the annular groove 31, the insertion portion 32 is in insertion fit with the pipe body 1 and forms interference fit, and the insertion portion 32 is matched with the annular groove 31, so that the sealing cover 3 is fixedly connected with the pipe body 1.

Referring to fig. 2, in order to improve the sealing performance between the sealing cover 3 and the pipe body 1, the sealing cover 3 is embedded with a first sealing ring 7 in the annular groove 31, the first sealing ring 7 is tightly abutted to the groove wall of the annular groove 31 and the outer wall of the pipe body 1, in addition, a second sealing ring 8 is sleeved on the insertion part 32 of the sealing cover 3, the second sealing ring 8 is tightly abutted to the inner wall of the pipe body 1, and the sealing performance between the sealing cover 3 and the pipe body 1 is improved by the first sealing ring 7 and the second sealing ring 8.

Referring to fig. 2, the vent hole 4 is arranged on the insertion part 32 of the sealing cover 3, the sealing cover 3 is internally provided with a cavity 9 communicated with the outside, the vent hole 4 is communicated with the cavity 9, the one-way ventilation assembly 5 is arranged in the cavity 9, the one-way ventilation assembly 5 comprises a spring 51 and a sealing element, the sealing element is arranged as a sealing block 52, one end of the spring 51 is fixedly connected on the inner wall of the cavity 9, the other end of the spring 51 is fixedly connected with the sealing block 52, the extension direction of the spring 51 is parallel to the length direction of the vent hole 4, the sealing block 52 is tightly propped against the orifice of the vent hole 4, the sealing cover 3 is positioned in the cavity 9 and is fixedly provided with two guide rods 10, the two guide rods 10 are symmetrically fixed on two sides of the orifice of the vent hole 4, and the length directions of the two guide rods 10 are parallel to the extension direction of the spring 51, and the sealing block 52 is in inserted sliding fit with the two guide rods 10, so that the sealing block 52 is guided to move.

In fact, under the normal condition, spring 51 is in compression state, can make sealed piece 52 support tightly in the drill way department of exhaust hole 4, prevents in steam gets into body 1, when the gaseous inflation of being heated in body 1, can push up sealed piece 52, and compression spring 51 simultaneously for exhaust hole 4 and cavity 9 intercommunication, and then will be heated the gaseous discharge, prevent to be heated the gaseous inflation, lead to the explosion of body 1. In addition, the guide rod 10 guides the movement of the seal block 52, which contributes to the improvement of the stability of the movement of the seal block 52.

The implementation principle of an explosion-proof heating pipe of the embodiment of the application is as follows: in practice, after the power is turned on, the electric current passes through the electric heating wire 2, so that the electric heating wire 2 is heated continuously to generate heat, the heat is conducted to the evaporator through the pipe body 1, frost on the evaporator is melted, in the process, the gas in the pipe body 1 is subjected to thermal expansion, then the sealing block 52 is pushed open, the gas is discharged, and the heated gas is prevented from expanding continuously in the pipe body 1, so that the pipe body 1 is cracked; in addition, the sealing block 52 can be tightly pressed against the exhaust hole 4 by the spring 51, which helps to prevent external moisture from entering the tube body 1, and further helps to prevent the heating wire 2 from being corroded, i.e., helps to prolong the service life of the heating wire 2.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims (8)

1. The utility model provides an explosion-proof heating pipe, is open-ended body (1), heating wire (2) and sealed lid (3) including both ends, wear to establish in body (1) heating wire (2), sealed lid (3) and body (1) both ends sealing connection, the both ends of heating wire (2) are connected with the wire, its characterized in that: the sealing structure is characterized in that an exhaust hole (4) enabling the pipe body (1) to be communicated with the outside is formed in the sealing cover (3), a one-way ventilation assembly (5) is arranged on the exhaust hole (4) on the sealing cover (3) and used for limiting outside air to enter the pipe body (1), and a metal heat conducting piece (6) is arranged on the pipe body (1).

2. An explosion-proof heating pipe according to claim 1, characterized in that: the sealing structure is characterized in that an annular groove (31) is formed in one side, close to the pipe body (1), of the sealing cover (3), the pipe opening of the pipe body (1) is matched with the annular groove (31) of the sealing cover (3) in an inserting mode, the sealing cover (3) is located in the annular groove (31) and is internally provided with a first sealing ring (7), and the first sealing ring (7) is tightly abutted to the groove wall of the annular groove (31) and the outer wall of the pipe body (1).

3. An explosion-proof heating pipe according to claim 2, characterized in that: one side of the sealing cover (3) close to the pipe body (1) is provided with an inserting part (32), the inserting part (32) is matched with the pipe body (1) in an inserting mode, a second sealing ring (8) is sleeved on the inserting part (32), the second sealing ring (8) is tightly abutted to the inner wall of the pipe body (1), and the exhaust hole (4) is formed in the inserting part (32) of the sealing cover (3).

4. An explosion-proof heating pipe according to claim 3, characterized in that: the sealing cover (3) is provided with a cavity (9) communicated with the outside, the exhaust hole (4) is communicated with the cavity (9), the one-way ventilation assembly (5) is arranged in the cavity (9), the one-way ventilation assembly (5) comprises a spring (51) and a sealing element, one end of the spring (51) is fixedly connected with the inner wall of the cavity (9), the other end of the spring is fixedly connected with the sealing element, and the sealing element is tightly abutted against the exhaust hole (4).

5. An explosion-proof heating pipe according to claim 4, characterized in that: sealed lid (3) are located exhaust hole (4) drill way department and are provided with guide bar (10), guide bar (10) are located cavity (9), the length direction of guide bar (10) is parallel with the flexible direction of spring (51), the sealing member sets up to sealed piece (52), sealed piece (52) are pegged graft with guide bar (10) and are slided the cooperation.

6. An explosion-proof heating pipe according to claim 1, characterized in that: the electric heating wire (2) is spirally arranged.

7. An explosion-proof heating pipe according to claim 1, characterized in that: the tube body (1) is arranged in a transparent mode.

8. An explosion-proof heating pipe according to claim 1, characterized in that: and insulating paint is coated on the sealing cover (3).

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