CN211321538U - Safe voltage carbon fiber heating cable and electric heating system - Google Patents
Safe voltage carbon fiber heating cable and electric heating system Download PDFInfo
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- CN211321538U CN211321538U CN202020237083.7U CN202020237083U CN211321538U CN 211321538 U CN211321538 U CN 211321538U CN 202020237083 U CN202020237083 U CN 202020237083U CN 211321538 U CN211321538 U CN 211321538U
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Abstract
The utility model discloses a safe voltage carbon fiber heating cable and electric heating system, safe voltage carbon fiber heating cable, including copper conductor and carbon fiber heating wire, the copper conductor includes first copper conductor and second copper conductor, the carbon fiber heating wire has many, and many carbon fiber heating wires connect in parallel on first copper conductor and second copper conductor, connect through the welded mode between carbon fiber heating wire and the first copper conductor and the second copper conductor, and be provided with the insulation protection joint through the mode of moulding plastics at the junction of first copper conductor and second copper conductor and carbon fiber heating wire; the electric heating system comprises a power supply and a temperature controller, wherein the temperature controller is a safe voltage carbon fiber heating cable, and the utility model has the advantages of safe use, heating and uniform heat transfer.
Description
Technical Field
The utility model belongs to the technical field of the electric heat, concretely relates to safe voltage carbon fiber heating cable still relates to an electric heating system in addition.
Background
The safe voltage is the voltage which does not cause direct death or disability to people, and the 'safe extra-low voltage' which allows continuous contact under the general environmental condition is 36V. The industry stipulates that the safe voltage is not higher than 36V, the continuous contact safe voltage is 24V, the safe current is 10mA, and the damage degree of electric shock to human bodies mainly depends on the magnitude of the current passing through the human bodies and the electrifying time.
The greater the current intensity, the greater the risk of mortality; the longer the duration, the greater the likelihood of death. The minimum current value which can cause people to feel is called sensing current, the alternating current is 1mA, and the direct current is 5 mA; the maximum current which a person can get rid of after getting an electric shock is called the free current, the alternating current is 10mA, and the direct current is 50 mA; the current which endangers life in a short time is called lethal current, for example, 100mA of current is passed through a human body for 1s, which can be enough to make a human fatal, so that the lethal current is 50 mA. In the case of a shock protection device, the current allowed to pass through the body can be typically considered as 30 mA.
Civil 220V voltage warms up electricity and uses commonly, and carbon fiber cable length generally is 12.5m, and under the condition of 220V voltage, the power of each group carbon fiber is: 230W, resistance: 210 Ω; due to the fact that the 220V alternating voltage is used in the installation and use processes, local overheating or improper installation can cause damage to the insulating layer, and the building has the risk of electric leakage; especially in special humid environments, such as bathrooms, toilets, kitchens and the like, potential safety hazards are easy to occur and cause tripping.
SUMMERY OF THE UTILITY MODEL
The utility model aims to overcome the defect that potential safety hazards are easy to appear when the heating cable in the prior art works by using 220V voltage in a humid area, and provides a safe voltage carbon fiber heating cable which adopts low voltage in use, namely the safe voltage can be used for supplying power, and the use is safer; even if the carbon fiber heating cable is damaged in a humid environment, no danger is caused to a human body; in addition, the utility model also discloses an electric heating system, have safe in utilization, the effectual advantage generates heat.
In order to solve the technical problem, the utility model discloses the technical scheme who adopts is:
the basic concept of the utility model is as follows: by using the principle of ohm's law, power is the square of voltage/resistance, and the length of the existing carbon fiber heating wire is 12.5m, and under the condition of 220V voltage, each group of power: 230W, resistance: 210 Ω, meter resistance: 16.8 omega; if under the voltage becomes 20V's the condition, current cable resistance is too high, unable normal heating, need reduce the heating material resistance, adopts parallelly connected and reduce heating material length, can reach and reduce the resistance purpose, and parallelly connected resistance calculation formula is parallelly connected to n equal resistances, and the formula just simplifies to R1/n, wherein: r is the total resistance after parallel connection, and R1 is the resistance in each branch circuit; meanwhile, the national standard of low-temperature heating radiation, the line power of the heating cable is about 20W/m, but in practical use, the line power is about 22W/m.
The preliminary scheme is as follows:
adopt trapezoidal parallel mode, transversely set up carbon fiber heating wire, vertically set up stranded copper line, take welded mode to connect at the juncture of carbon fiber heating wire and copper line to the insulating protection joint of moulding plastics.
Spacing: 100mm, multiple groups are connected in parallel, and the power of the extension meter is 220 watts.
Wherein, the length of the carbon fiber is: 1082mm, spacing: 100 mm.
Carbon fibers of 1082mm length, with a resistance of 16.8 x 1.082 x 18.18 omega,
the voltage is set to be 20V, and according to ohm's law, the power is: (20V)/18.18 Ω 22W, meter power: 22W/1.082m ≈ 20W/m, specified in the floor radiant heating Specification JGJ 142-2004: when the heating cable ground radiation heating mode is adopted, the linear power of the heating cable is about 20W/m, and the low-temperature heating radiation national standard is met.
The specific scheme is as follows:
the utility model provides a safe voltage carbon fiber heating cable, includes copper conductor and carbon fiber heating wire, the copper conductor includes first copper conductor and second copper conductor, the carbon fiber heating wire has many, and many carbon fiber heating wires connect in parallel on first copper conductor and second copper conductor, are connected through the welded mode between carbon fiber heating wire and the first copper conductor and the second copper conductor to be provided with the insulation protection joint through the mode of moulding plastics in the junction department of first copper conductor and second copper conductor and carbon fiber heating wire.
Wherein, the length L of the carbon fiber heating wire is 1070mm-1090 mm.
Further limit, the length L of the carbon fiber heating wire is 1082 mm.
Wherein, the intervals between the carbon fiber heating wires are equal, and the interval between the adjacent carbon fiber heating wires is H between 90mm and 110 mm.
Further limited, the distance between the adjacent carbon fiber heating wires is H which is 100 mm.
The first copper wire and the second copper wire comprise a core body and a protective layer coated on the core body, and the core body is formed by mutually twisting a plurality of strands of copper wires.
Wherein, the copper line material is high accuracy oxygen-free copper.
The utility model also discloses an electric heating system, including power, temperature controller and above-mentioned safe voltage carbon fiber heating cable, safe voltage carbon fiber heating cable has a plurality ofly and connects in parallel in the power, the temperature controller is installed indoor and links to each other with the power, the temperature controller is used for detecting indoor temperature and according to the temperature value disconnection or the connected power that detect.
Compared with the prior art, the utility model discloses following beneficial effect has:
the utility model discloses a safe voltage carbon fiber heating cable can accomplish under the condition of 20V voltage, guarantees to have sufficient heating power, and actual heating voltage is less than continuous contact safe voltage 24V, and the use is safer, uses in moist region, also can not cause the injury to the human body, also can avoid appearing the condition of tripping operation simultaneously, guarantees domestic appliance, like the normal function of refrigerator etc..
Meanwhile, the electric heating system disclosed by the utility model achieves the purpose of heating under the safe voltage, is more convenient and safer to use, and has good heating effect; the effect of automatic control can be achieved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
Fig. 1 is the utility model discloses in safe voltage carbon fiber heating cable overall structure schematic diagram.
Fig. 2 is a schematic view of the overall structure of the electric heating system of the present invention.
Reference numerals: 1 copper conductor, 2 first copper conductor, 3 second copper conductor, 4 carbon fiber heating wire, 5 insulating protection joint, 6 power, 7 temperature controller, 8 safe voltage carbon fiber heating cable.
Detailed Description
The present invention will be further described with reference to the following examples, which are only some, but not all, of the examples of the present invention. Based on the embodiments in the present invention, other embodiments used by those skilled in the art without creative work belong to the protection scope of the present invention.
Example 1
The utility model provides a safe voltage carbon fiber heating cable, includes copper conductor 1 and carbon fiber heating wire 4, copper conductor 1 includes first copper conductor 2 and second copper conductor 3, carbon fiber heating wire 4 has many, and many carbon fiber heating wires 4 connect in parallel on first copper conductor 2 and second copper conductor 3, are connected through the welded mode between carbon fiber heating wire 4 and first copper conductor 2 and the second copper conductor 3 to be provided with insulating protection joint 5 through the mode of moulding plastics in the junction department of first copper conductor 2 and second copper conductor 3 and carbon fiber heating wire 4.
It should be noted that the plurality of carbon fiber heating wires 4 are connected in parallel to the first copper wire 2 and the second copper wire 3, and the specific connection mode is as follows: first copper conductor 2 and the mutual parallel arrangement of second copper conductor 3, each carbon fiber heating wire 4 one end is connected with first copper conductor 2, and the other end is connected with second copper conductor 3, is parallel to each other between the adjacent carbon fiber heating wire 4.
Therefore, the plurality of carbon fiber heating wires 4 are connected to the first copper wire 2 and the second copper wire 3 in parallel, so that the resistance can be effectively reduced, and the normal use within the limit value of the safe voltage can be effectively ensured, and the carbon fiber heating wires 4 are connected with the first copper wire 2 and the second copper wire 3 in a welding manner, so that the connection points of the carbon fiber heating wires 4 and the first copper wire 2 and the second copper wire 3 are more stable, the disconnection is avoided, and the use is safer; meanwhile, the connecting point is coated by the injection insulation protective joint 5 at the connecting point, so that the fiber heating wire and the copper wire are fixedly connected to form a heating body in an integrated structure, and the sealing performance of the connecting point is improved; thus, the utility model discloses not only can be under safe voltage normal use, simultaneously, the heat-generating body structure of the integral type structure of formation is more stable, and tie point sealing performance is better, and life is longer.
Because carbon fiber heating wire 4 and first copper wire 2 and the 3 tie points of second copper wire are through welding and insulating protective joint 5 of moulding plastics, the tie point is more firm, and life is longer, improves its sealing performance, in humid environment, uses safelyr.
Wherein, the carbon fiber heating wire 4 interval between equals, and calorific capacity transmission is more even when using, and the heating effect is better.
The first copper wire 2 and the second copper wire 3 comprise a core body and a protective layer coated on the core body, the core body is formed by mutually twisting a plurality of strands of copper wires, and the copper wires are made of high-precision oxygen-free copper; thus, the copper conductor 1 has better conductive effect and less electric loss.
In the present embodiment, the length L of the carbon fiber heating wire 4 is 1082 mm.
Wherein, the interval between the carbon fiber heating wire 4 is equal, and the interval between adjacent carbon fiber heating wire 4 is H and is 100 mm.
This is done: the interval is as follows: 100mm, the length of the carbon fiber is: 1082, set voltage 20V.
On each branch:
the resistance is: 16.8 × 1.082 ≈ 18.18 Ω;
the power is as follows: (20V)/18.18 Ω ≈ 22W;
rice power: about 22W/1.082m ≈ 20.3W/m, as specified in the floor radiant heating Specification JGJ 142-2004: when the heating cable ground radiation heating mode is adopted, the linear power of the heating cable is about 20W/m, and the low-temperature heating radiation national standard is met.
In actual use, the number of the carbon fiber heating wires 4 connected in parallel can be determined according to actual conditions.
Example 2
This embodiment is substantially the same as embodiment 1, except that: the length L of the carbon fiber heating wire 4 is 1070mm, and the set voltage is 18V; the distance between the adjacent carbon fiber heating wires 4 is H of 90 mm;
the resistance is: 16.8 × 1.07 ═ 17.976 Ω;
the power is as follows: (18V)/17.976 Ω ≈ 18W;
rice power: about 16.84W/m, as specified in the floor radiant heating specification JGJ 142-2004: when the heating cable ground radiation heating mode is adopted, the linear power of the heating cable is about 20W/m, and the low-temperature heating radiation national standard is met.
Example 3
This embodiment is substantially the same as embodiment 1, except that: the length L of the carbon fiber heating wire 4 is 1090m, and the voltage is set to be 20V; the distance between adjacent carbon fiber heating wires 4 is H of 1100 mm;
the resistance is: 16.8 × 1.1 ═ 18.48 Ω;
the power is as follows: (20V)/18.48 Ω ≈ 21.65W;
rice power: about 19.67W/m, as specified in the floor radiant heating specification JGJ 142-2004: when the heating cable ground radiation heating mode is adopted, the linear power of the heating cable is about 20W/m, and the low-temperature heating radiation national standard is met.
Example 4
The embodiment discloses an electric heating system, including power 6 and temperature controller 7 to and implemented the safe voltage carbon fiber heating cable 8 in 1, safe voltage carbon fiber heating cable 8 has a plurality ofly, and connects in parallel in power 6, temperature controller 7 installs indoor and links to each other with power 6, the temperature controller is used for detecting indoor temperature and according to the temperature value disconnection or the connecting power 6 that detect.
Therefore, the purpose of heating is achieved under the safe voltage, the use is more convenient and safer, and meanwhile, the heating effect is good; the purpose of automatic control is achieved.
While the preferred embodiments of the present invention have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. It is therefore intended that the appended claims be interpreted as including the preferred embodiment and all such alterations and modifications as fall within the scope of the invention. The above description is only exemplary of the present invention and should not be taken as limiting, and all changes, equivalents, and improvements made within the spirit and principles of the present invention should be understood as being included in the scope of the present invention.
Claims (8)
1. The utility model provides a safe voltage carbon fiber heating cable, includes copper conductor and carbon fiber heating wire, its characterized in that: the copper conductor comprises a first copper conductor and a second copper conductor, the carbon fiber heating wires are multiple, the multiple carbon fiber heating wires are connected in parallel on the first copper conductor and the second copper conductor, the carbon fiber heating wires are connected with the first copper conductor and the second copper conductor in a welding mode, and insulation protection joints are arranged at the connecting points of the first copper conductor and the second copper conductor and the carbon fiber heating wires in an injection molding mode.
2. A safety voltage carbon fiber heating cable according to claim 1, wherein: the length L of the carbon fiber heating wire is 1070mm-1090 mm.
3. A safety voltage carbon fiber heating cable according to claim 2, wherein: the length L of the carbon fiber heating wire is 1082 mm.
4. A safety voltage carbon fiber heating cable according to claim 1, wherein: the carbon fiber heating wires are equal in distance, and the distance between adjacent carbon fiber heating wires is 90-110 mm.
5. A safety voltage carbon fiber heating cable according to claim 4, wherein: the distance between the adjacent carbon fiber heating wires is H100 mm.
6. A safety voltage carbon fiber heating cable according to claim 1, wherein: the first copper wire and the second copper wire comprise cores and protective layers coated on the cores, and the cores are formed by mutually twisting a plurality of strands of copper wires.
7. A safety voltage carbon fiber heating cable according to claim 1, wherein: the copper conducting wire is made of high-precision oxygen-free copper.
8. An electric heating system is characterized by comprising a power supply, a temperature controller and a safety voltage carbon fiber heating cable according to any one of claims 1 to 7, wherein a plurality of safety voltage carbon fiber heating cables are connected in parallel in the power supply, the temperature controller is installed indoors and connected with the power supply, and the temperature controller is used for detecting indoor temperature and disconnecting or connecting the power supply according to the detected temperature value.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020237083.7U CN211321538U (en) | 2020-03-02 | 2020-03-02 | Safe voltage carbon fiber heating cable and electric heating system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020237083.7U CN211321538U (en) | 2020-03-02 | 2020-03-02 | Safe voltage carbon fiber heating cable and electric heating system |
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| CN211321538U true CN211321538U (en) | 2020-08-21 |
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| CN202020237083.7U Active CN211321538U (en) | 2020-03-02 | 2020-03-02 | Safe voltage carbon fiber heating cable and electric heating system |
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