CN216960232U - Tubular electrothermal element with overtemperature, quick and automatic power-off protection - Google Patents
Tubular electrothermal element with overtemperature, quick and automatic power-off protection Download PDFInfo
- Publication number
- CN216960232U CN216960232U CN202220163524.2U CN202220163524U CN216960232U CN 216960232 U CN216960232 U CN 216960232U CN 202220163524 U CN202220163524 U CN 202220163524U CN 216960232 U CN216960232 U CN 216960232U
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- protection
- metal outer
- connecting rod
- sensing connecting
- rear end
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- 229910052751 metal Inorganic materials 0.000 claims abstract description 53
- 239000002184 metal Substances 0.000 claims abstract description 53
- 238000010438 heat treatment Methods 0.000 claims abstract description 26
- 238000005485 electric heating Methods 0.000 claims abstract description 24
- 239000000956 alloy Substances 0.000 claims abstract description 22
- 229910045601 alloy Inorganic materials 0.000 claims abstract description 22
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 claims abstract description 17
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 claims abstract description 15
- 239000000395 magnesium oxide Substances 0.000 claims abstract description 15
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 claims abstract description 5
- 230000001681 protective effect Effects 0.000 claims description 8
- 238000012546 transfer Methods 0.000 abstract description 5
- 230000002159 abnormal effect Effects 0.000 abstract description 4
- 238000002844 melting Methods 0.000 abstract description 4
- 230000008018 melting Effects 0.000 abstract description 4
- 238000009825 accumulation Methods 0.000 abstract description 3
- 238000005336 cracking Methods 0.000 abstract description 3
- 238000013461 design Methods 0.000 abstract description 3
- 230000005611 electricity Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000002265 prevention Effects 0.000 description 2
- 230000004044 response Effects 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Abstract
The utility model discloses an overtemperature fast automatic power-off protection tubular electric heating element, which comprises: a metal outer tube; the first outer electrode leading rod is arranged at the front end of the metal outer pipe; the protection assembly is installed in the metal outer pipe and comprises an insulating protection sleeve, a fuse and an internal temperature sensing connecting rod, the front end of the fuse is connected with the rear end of the first outer electrode lead rod, the rear end of the fuse is connected with the front end of the internal temperature sensing connecting rod, the fuse and the internal temperature sensing connecting rod are installed in the insulating protection sleeve, and the rear section of the internal temperature sensing connecting rod extends out of the insulating protection sleeve; the alloy heating wire extends into the metal outer tube and is connected with the rear end of the internal temperature-sensing connecting rod; and the electrical grade magnesium oxide is filled in the metal outer pipe at the rear part of the protection component. The design of quick automatic power-off protection with overtemperature is adopted, so that the potential safety hazard problems of tube body melting cracking, electric leakage, fire and the like caused by low heat accumulation and heat transfer efficiency due to abnormal influence under the working environment of the tubular electric heating element are solved.
Description
Technical Field
The utility model relates to an electric heating element, in particular to an overtemperature fast automatic power-off protection tubular electric heating element.
Background
Along with the development of industry, people's life is also developing in the direction of tending to the convenience, and tubular electric heating element plays an important role in the modernized life as a convenient heating element, because the difference of service environment is great in each field, also has damage to different degrees to tubular electric heating element in the heating process, especially unusual super temperature problem.
In order to solve the problem of overtemperature quick response automatic power-off protection of the tubular electric heating element in an abnormal working environment, the conventional tubular electric heating element also considers the use of other overtemperature protection prevention modes such as: the method can also have certain prevention and control functions when external temperature sensing thermocouples and the like are arranged and controlled in the use environment. However, the tubular electric heating element cannot effectively achieve over-temperature rapid power-off protection in an abnormal working environment, and potential safety hazards such as electric leakage and fire caused by melting and cracking of the metal outer pipe are easily caused.
SUMMERY OF THE UTILITY MODEL
The present invention is directed to solving, at least to some extent, one of the above-mentioned problems in the related art. Therefore, the utility model provides an overtemperature fast automatic power-off protection tubular electric heating element.
In order to achieve the purpose, the technical scheme of the utility model is as follows:
according to a first aspect embodiment of the utility model, an overtemperature fast auto-power-off protection tubular electric heating element comprises:
a metal outer tube;
a first outer electrode lead rod installed at the front end of the metal outer tube;
the protection assembly is installed in the metal outer pipe and comprises an insulating protection sleeve, a fuse and an inner temperature sensing connecting rod, the front end of the fuse is connected with the rear end of the first outer electrode leading rod, the rear end of the fuse is connected with the front end of the inner temperature sensing connecting rod, the fuse and the inner temperature sensing connecting rod are installed in the insulating protection sleeve, and the rear section of the inner temperature sensing connecting rod extends out of the insulating protection sleeve;
the alloy heating wire extends into the metal outer pipe and is connected with the rear end of the internal temperature sensing connecting rod;
and the electrical-grade magnesium oxide is filled in the metal outer tube behind the protection component and coats the rear section of the inner temperature-sensing connecting rod and the alloy heating wire.
The tubular electric heating element with the overtemperature rapid automatic power-off protection function provided by the embodiment of the utility model at least has the following beneficial effects: by adopting the design of rapid automatic power-off protection with overtemperature, the potential safety hazard problems of tube body melting cracking, electric leakage, fire and the like caused by low heat accumulation and heat transfer efficiency due to abnormal influence under the working environment of the tubular electric heating element are solved.
According to some embodiments of the utility model, a second outer electrode leading-out rod is installed at the rear end of the metal outer tube, the rear end of the alloy heating wire is connected with the second outer electrode leading-out rod, and the electrical grade magnesium oxide covers a rod body of the second outer electrode leading-out rod in the metal outer tube.
According to some embodiments of the utility model, a mounting seat is provided between the front and rear portions of the metal outer tube.
According to some embodiments of the utility model, the inner temperature-sensing connecting rod has a T-shaped front end, and the front end of the inner temperature-sensing connecting rod is clamped at the rear end of the insulating protective sleeve.
According to some embodiments of the utility model, the alloy heater is in the form of a coil spring.
According to some embodiments of the utility model, the metal outer pipe is provided with an annular groove which is recessed inwards in the radial direction, and the rear end of the insulating protective sleeve abuts against the annular groove for installation and limiting.
Additional aspects and advantages of the utility model will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the utility model.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view of a portion of the structure of FIG. 1;
FIG. 3 is a schematic structural view of a protective assembly;
fig. 4 is a schematic view of the protection component and the alloy heating wire.
Reference numerals are as follows: a metal outer tube 100; an annular groove 101; a first outer electrode lead bar 200; an insulating protective sheath 310; a fuse 320; an inner temperature sensitive connecting rod 330; an alloy heating wire 400; 500 parts of electrical grade magnesium oxide; a second external electrode leading-out bar 600; a mounting seat 700.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are illustrative and intended to explain the present invention and should not be construed as limiting the present invention.
The utility model relates to an overtemperature rapid automatic power-off protection tubular electric heating element, which comprises a metal outer tube 100, a first outer electrode lead rod 200, a protection component, an alloy heating wire 400 and electrical grade magnesium oxide 500, as shown in figure 1.
In this embodiment, the metal outer tube 100 may have a hollow tube structure. As shown in fig. 1 and 2, the first outer electrode lead bar 200 is installed at the front end of the metal outer tube 100, the front section of the first outer electrode lead bar 200 extends out of the metal outer tube 100 to connect with an external terminal for power connection, and the rear section of the first outer electrode lead bar 200 is located in the metal outer tube 100. As shown in fig. 3, the protection assembly includes an insulating protection sleeve 310, a fuse 320 and an inner temperature sensing connection rod 330, the insulating protection sleeve 310 may be made of an insulating material such as plastic, and the insulating protection sleeve 310 covers the fuse 320 and the inner temperature sensing device. The front end of the fuse 320 may be connected to the rear end of the first outer electrode lead rod 200 through a conductive terminal, and the rear end of the fuse 320 is connected to the front end of the inner temperature sensing connection rod 330. The rear section of the inner temperature-sensing connecting rod 330 extends out of the insulating protective sleeve 310. One end of the alloy heating wire 400 is connected with the rear end of the inner temperature sensing connection rod 330, and the other end of the alloy heating wire 400 can be connected to an external terminal on the rear end of the metal outer tube 100. The electrical grade magnesium oxide 500 is filled in the metal outer tube 100, and the place filled with the electrical grade magnesium oxide 500 is located in the metal outer tube 100 behind the protection component, that is, the electrical grade magnesium oxide 500 extends the inner temperature-sensing connecting rod 330 to the rear section of the insulating protective sleeve 310 and covers the alloy heating wire 400, so that the alloy heating wire 400 can be fixed relative to the metal outer tube 100 by using the filling effect of the electrical grade magnesium oxide 500. When the metal heating wire works, the terminals at the two ends of the metal outer pipe 100 are connected with electricity, and the alloy heating wire 400 is connected with electricity to heat. During heating, the electrical grade magnesium oxide 500 rapidly transfers heat to the metal outer tube 100 and the inner temperature-sensing connecting rod 330. When the current or temperature exceeds a predetermined value, the melt in the fuse 320 is blown by the high temperature, and the circuit is broken. This novel tubulose electric heating element adopts and takes the quick auto-power-off protection design of overtemperature, effectively prevents to use under unusual environment and leads to heat transfer to become invalid, thereby the heat accumulation arouses easily that this tubulose electric heating element such as metal outer tube 100 melting fracture reaches the super automatic power-off protection of quick response.
In some embodiments of the present invention, the front end of the outer metal tube 100 extends out of the outer metal tube 100 through the first outer electrode lead-out bar and is connected to the external terminal, and the rear end of the outer metal tube 100 extends out of the outer metal tube 100 through the second outer electrode lead-out bar 600 and is connected to the external terminal. That is, a part of the rod body of the second external electrode leading-out rod 600 is positioned in the metal outer tube 100, and the rear end of the alloy heating wire 400 is connected with one end of the second external electrode leading-out rod 600. The electrical grade magnesium oxide 500 covers the entire alloy heating wire 400, and covers the rod body of the second external electrode lead-out rod 600 located in the metal outer tube 100, so as to fix the second external electrode lead-out rod 600.
Further, in this embodiment, the metal outer tube 100 may be processed into various shapes, such as a straight tube shape, a circular ring shape, or a curved shape with any irregular shape, according to the use requirement. In this embodiment, the front and rear portions of the metal outer pipe 100 face the same side and are parallel to each other, a mounting seat 700 is disposed between the front and rear portions of the metal outer pipe 100, and the front and rear portions of the metal outer pipe 100 are relatively fixed by the mounting seat 700. Meanwhile, the electric heating element can be fixedly arranged on different devices by utilizing the mounting seat 700. The mounting seat 700 is an optional component of the electric heating element of the present invention, and is selected according to actual requirements.
In some embodiments of the present invention, the front end of the inner temperature-sensing connecting rod 330 is T-shaped, the rear end of the insulating sheath 310 can be in a necking shape, and the front end of the inner temperature-sensing connecting rod 330 is clamped in the rear end of the insulating sheath 310 by the T-shaped position, so as to position the mounting position of the inner temperature-sensing connecting rod 330.
In some embodiments of the present invention, as shown in fig. 4, the alloy heating wire 400 may be configured as a coil spring, and the coil spring shaped alloy heating wire 400 can effectively increase the heating area to sufficiently contact with the electrical grade magnesium oxide 500 for heat transfer.
In some embodiments of the present invention, an annular groove 101 is disposed on a sidewall of the metal outer tube 100, and the annular groove 101 is disposed circumferentially around a central axis of the metal outer tube 100. The annular groove 101 is recessed in a radially inward direction of the metal outer pipe 100. When the protection assembly is installed, the protection assembly is inserted into the metal outer pipe 100 from the front end of the metal outer pipe 100, the rear end of the insulating protection sleeve 310 abuts against the annular groove 101, and the insulating protection sleeve 310 is limited by the annular groove 101.
In the description herein, references to the description of "some specific embodiments" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the utility model, the scope of which is defined by the claims and their equivalents.
Claims (6)
1. An overtemperature fast automatic power-off protection tubular electric heating element is characterized by comprising:
a metal outer tube (100);
a first outer electrode lead bar (200), the first outer electrode lead bar (200) being mounted at a front end of the metal outer tube (100);
the protection assembly is installed in the metal outer pipe (100), and comprises an insulating protection sleeve (310), a fuse (320) and an inner temperature sensing connecting rod (330), the front end of the fuse (320) is connected with the rear end of the first outer electrode lead rod (200), the rear end of the fuse (320) is connected with the front end of the inner temperature sensing connecting rod (330), the fuse (320) and the inner temperature sensing connecting rod (330) are installed in the insulating protection sleeve (310), and the rear section of the inner temperature sensing connecting rod (330) extends out of the insulating protection sleeve (310);
the alloy heating wire (400), the alloy heating wire (400) stretches into the metal outer pipe (100) and is connected with the rear end of the inner temperature-sensing connecting rod (330);
the electric-level magnesium oxide (500) is filled in the metal outer pipe (100) behind the protection component, and the rear section of the inner temperature-sensing connecting rod (330) and the alloy heating wire (400) are coated by the electric-level magnesium oxide (500).
2. An overtemperature fast auto-power-off protection tubular electric heating element as claimed in claim 1, characterized in that: a second outer electrode leading-out rod (600) is installed at the rear end of the metal outer tube (100), the rear end of the alloy heating wire (400) is connected with the second outer electrode leading-out rod (600), and the electrical grade magnesium oxide (500) wraps a rod body of the second outer electrode leading-out rod (600) in the metal outer tube (100).
3. An overtemperature fast auto-power-off protection tubular electric heating element as claimed in claim 2, characterized in that: and a mounting seat (700) is arranged between the front part and the rear part of the metal outer pipe (100).
4. An overtemperature fast auto-power-off protection tubular electric heating element as claimed in claim 1, characterized in that: the front end of the internal temperature-sensing connecting rod (330) is T-shaped, and the front end of the internal temperature-sensing connecting rod (330) is clamped at the rear end of the insulating protective sleeve (310).
5. An overtemperature fast auto-power-off protection tubular electric heating element as claimed in claim 1, characterized in that: the alloy heating wire (400) is in a spiral spring shape.
6. The tubular electric heating element with over-temperature rapid automatic power-off protection function of claim 1, wherein: the metal outer pipe (100) is provided with an annular groove (101) which is inwards recessed along the radial direction, and the rear end of the insulating protective sleeve (310) is abutted to the annular groove (101) to be mounted and limited.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220163524.2U CN216960232U (en) | 2022-01-20 | 2022-01-20 | Tubular electrothermal element with overtemperature, quick and automatic power-off protection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220163524.2U CN216960232U (en) | 2022-01-20 | 2022-01-20 | Tubular electrothermal element with overtemperature, quick and automatic power-off protection |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216960232U true CN216960232U (en) | 2022-07-12 |
Family
ID=82316135
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220163524.2U Active CN216960232U (en) | 2022-01-20 | 2022-01-20 | Tubular electrothermal element with overtemperature, quick and automatic power-off protection |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216960232U (en) |
-
2022
- 2022-01-20 CN CN202220163524.2U patent/CN216960232U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: Over temperature fast automatic power outage protection tubular electric heating element Effective date of registration: 20231016 Granted publication date: 20220712 Pledgee: Agricultural Bank of China Limited Shunde Beijiao sub branch Pledgor: GUANGDONG HEADWAY ELECTRIC HEAT COMPONENTS CO.,LTD. Registration number: Y2023980061328 |
|
| PE01 | Entry into force of the registration of the contract for pledge of patent right |