CN214256663U - Small PTC heater and water heater - Google Patents
Small PTC heater and water heater Download PDFInfo
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- CN214256663U CN214256663U CN202120202271.0U CN202120202271U CN214256663U CN 214256663 U CN214256663 U CN 214256663U CN 202120202271 U CN202120202271 U CN 202120202271U CN 214256663 U CN214256663 U CN 214256663U
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- conductive metal
- heating element
- ptc heating
- metal seat
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Abstract
The utility model discloses a small-size PTC heater, including the metal inner tube, be equipped with PTC heating element on the outer wall of metal inner tube, PTC heating element includes interior conductive metal seat, outer conductive metal seat and PTC heating element group, PTC heating element group centers on interior conductive metal seat a week, it has the insulating layer to coat outside conductive metal seat, it is insulating between metal inner tube and the interior conductive metal seat, leave clearance or insulating between outer conductive metal seat and the PTC heating element, be equipped with the conductive pillar of being connected with it and switching on respectively on conductive metal seat and the outer conductive metal seat including, so that interior conductive metal seat and outer conductive metal seat fill as the plate electrode. The utility model also discloses a water heater. Compared with the prior art, the heating is more uniform; and the assembly is convenient, the heating effect is better under the same heating power, the energy consumption is low, and the safety is high because of adopting the PTC heating element.
Description
Technical Field
The utility model relates to a heating device, in particular to small-size PTC heater and water heater.
Background
At present, an existing heating rod generally adopts an electric heating wire as a heating element, magnesium oxide powder with thermal conductivity is added into a pipe body to fill a space between the pipe body and the electric heating wire, and because the position of the electric heating wire in the pipe body is difficult to determine, temperature difference is easy to occur on the heating rod, namely, different positions of the pipe body have different heat, so that heating effect is uneven and poor, and the electric heating wire cannot be burnt in a dry state in use, so that the water level in a water tank or a liquid heater needs to be ensured to be capable of completely or partially soaking the heating rod all the time; if the situation of insufficient water supply occurs, the heating rod may burst, which not only easily causes fire but also endangers personal safety, and the conventional PTC heater has a bar-shaped plate structure, which is fixed in the heating rod housing after being coated with an insulating film outside the electrode plate, and thus, the structure is not only complicated, but also has a low thermal efficiency.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a small-size PTC heater and water heater, the technical problem that solve are the heating effect who improves liquid, reduce the energy consumption and be convenient for the assembly.
In order to solve the above problem, the utility model discloses a following technical scheme realizes: a small PTC heater comprises a metal inner tube, a PTC heating assembly is arranged on the outer wall of the metal inner tube, the PTC heating assembly comprises an inner conductive metal seat sleeved outside the metal inner tube, an outer conductive metal seat arranged outside the inner conductive metal seat and a PTC heating element group arranged between the inner conductive metal seat and the outer conductive metal seat, the PTC heating element group is in contact with the inner conductive metal seat and the outer conductive metal seat, the PTC heating element group surrounds the inner conductive metal seat for a circle, each PTC heating element group is provided with a plurality of PTC heating elements, the PTC heating elements are arranged in a straight line along the axial direction of the metal inner tube, an insulating layer is coated outside the outer conductive metal seat, the metal inner tube is insulated from the inner conductive metal seat, gaps or insulation are reserved among the inner conductive metal seat, the outer conductive metal seat and the PTC heating elements, and conductive posts connected and conducted with the inner conductive metal seat and the outer conductive metal seat are respectively arranged on the inner conductive metal seat and the outer conductive metal seat, so that the inner conductive metal holder and the outer conductive metal holder function as electrode plates.
Further, a circle of first PTC heating element contact parts are arranged on one end surface of the inner conductive metal seat opposite to the outer conductive metal seat, and the number of the first PTC heating element contact parts is equal to that of the PTC heating element groups, so that the electrode coating of each PTC heating element in the PTC heating element groups is completely contacted with the first PTC heating element contact parts; and a through hole for the metal inner pipe to pass through is formed in the center of the inner conductive metal seat.
Further, the inner conductive metal holder has a cross-sectional shape of a regular polygon, and the first PTC heating element contact portion is formed by each outer surface of the inner conductive metal holder.
Furthermore, the cross section of the inner conductive metal seat is in a regular polygon shape, a groove is formed in the position, located at the first PTC heating element contact part, of the inner conductive metal seat, and the first PTC heating element contact part is formed by groove walls, opposite to the outer conductive metal seat, of the groove.
Furthermore, the outer conductive metal seat is a cylinder with an annular cross section, and the inner wall of the outer conductive metal seat is provided with second PTC heating element contact parts, so that the contact conduction with the electrode coating of the PTC heating elements is realized, and the number of the second PTC heating element contact parts is the same as that of the PTC heating element groups.
Furthermore, the outer conductive metal base comprises arc-shaped pieces and a metal outer tube, the number of the arc-shaped pieces is equal to that of the PTC heating element groups, a cylinder with a circular cross section is formed after the arc-shaped pieces are combined, a second PTC heating element contact part is arranged on the surface of one end, opposite to the PTC heating element groups, of each arc-shaped piece, the second PTC heating element contact part is completely contacted with an electrode coating of each PTC heating element in the PTC heating element groups, and the metal outer tube is sleeved outside the outer conductive metal base and enables the metal outer tube to be contacted with the surface of each arc-shaped piece so as to form conduction; gaps or insulation are arranged among the arc-shaped sheet, the PTC heating element group and the inner conductive metal seat, and the insulating layer is coated outside the metal outer tube.
Furthermore, an insulating protective layer is filled between the metal inner pipe and the inner conductive metal seat.
Further, the insulating protective layer is made of insulating paper or insulating filler.
Further, the insulating filler is a magnesium oxide filler.
The utility model also discloses a water heater, include small-size PTC heater.
Compared with the prior art, the utility model, set up interior conductive metal seat and outer conductive metal seat as the plate electrode outside the metal inner tube, set up PTC heating element group ring shape between interior conductive metal seat and outer conductive metal seat a week, then insulate between interior conductive metal seat and the metal inner tube, and insulate the outer conductive metal seat, thus simplified the structure, and interior, outer conductive fixing base still is used for carrying on the clamping fixation to PTC heating element group, the interior conductive fixing base cover is established outside the metal inner tube, not only can make the heating more even; and the assembly is convenient, the heating effect is better under the same heating power, the energy consumption is low, and the safety is high because of adopting the PTC heating element.
Drawings
Fig. 1 is a schematic structural diagram of embodiment 1 of the present invention.
Fig. 2 is a schematic view of the internal structure of embodiment 1 of the present invention.
Fig. 3 is a schematic structural diagram of embodiment 2 of the present invention.
Fig. 4 is a first schematic internal structural diagram of embodiment 2 of the present invention.
Fig. 5 is a schematic diagram of the internal structure of embodiment 2 of the present invention.
Fig. 6 is a schematic structural view of the inner conductive metal base of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples.
Example 1:
as shown in fig. 1 and 2, the utility model discloses a small PTC heater, which comprises a metal inner tube 1, a PTC heating element 2 is arranged on the outer wall of the metal inner tube 1, the PTC heating element 2 comprises an inner conductive metal base 3 sleeved outside the metal inner tube 1, an outer conductive metal base 4 arranged outside the inner conductive metal base 3 and a PTC heating element group 5 arranged between the inner conductive metal base 3 and the outer conductive metal base 4, the PTC heating element group 5 is contacted with the inner conductive metal base 3 and the outer conductive metal base 4, the PTC heating element group 5 surrounds the inner conductive metal base 3 for a circle, each PTC heating element group 5 is provided with a plurality of PTC heating elements, the PTC heating elements are arranged along the axial direction of the metal inner tube 1, an insulating layer 6 is coated outside the outer conductive metal base 4, the metal inner tube 1 is insulated from the inner conductive metal base 3, gaps or insulation are left between the inner conductive metal base 3, the outer conductive metal base 4 and the PTC heating elements 5, in order to realize mutual insulation, the inner conductive metal base 3 and the outer conductive metal base 4 are respectively provided with a conductive column 7 which is connected and conducted with the inner conductive metal base 3 and the outer conductive metal base 4, so that the inner conductive metal base 3 and the outer conductive metal base 4 serve as electrode plates to jointly form the PTC heating component 2 together with the PTC heating component group 5.
The utility model discloses with interior conductive metal seat 3, outer conductive metal seat 4 as the plate electrode, saved the component, still reduced the cost and the assembly degree of difficulty.
During assembly, the metal inner tube 1 and the inner conductive metal base 3 are insulated, then the PTC heating element group 5 is placed on the inner conductive metal base 3, the outer conductive metal base 4 is assembled, then the conductive column 7 is electrically connected with the inner conductive metal base 3 and the outer conductive metal base 4 respectively, and finally the insulating layer 6 is coated outside the outer conductive metal base 4, so that the assembly is completed.
The utility model discloses in, be equipped with the groove on interior conductive metal seat 3 and outer conductive metal seat 4, will lead electrical pillar 7 to insert and establish in this groove.
As shown in fig. 2, in embodiment 1, the outer conductive metal base 4 may be a cylinder with a ring-shaped cross section, and the second PTC heating element contact portions 42 are disposed on the inner wall of the outer conductive metal base 4, so as to achieve contact conduction with the electrode coatings of the PTC heating elements, the number of the second PTC heating element contact portions 42 is the same as that of the PTC heating element groups 5, and the second PTC heating element contact portions 42 are contact planes.
As shown in fig. 2 and 6, a circle of first PTC heating element contact portions 31 is provided on one end surface of the inner conductive metal base 3 opposite to the outer conductive metal base 4, and the number of the first PTC heating element contact portions 31 is equal to the number of the PTC heating element groups 5, so that the electrode coating of each PTC heating element in the PTC heating element group 5 is completely in contact with the first PTC heating element contact portions 31; the first PTC heating element contact portions 31 are opposed to the second PTC heating element contact portions 41 one by one; a through hole 32 is provided at the center of the inner conductive metal base 3 for the metal inner tube 1 to pass through, and the metal inner tube 1 passes through the through hole 32.
As shown in fig. 2, the cross-sectional shape of the inner conductive metal base 3 is a regular polygon, the first PTC heating element contact portion 31 is formed by each outer surface of the inner conductive metal base 3, and of course, a groove 33 is provided at the first PTC heating element contact portion 31 on the inner conductive metal base 3, and the first PTC heating element contact portion 31 is formed by a groove wall where the groove 33 is opposed to the outer conductive metal base 4, so as to fix the PTC heating element group 5.
As shown in fig. 2, an insulating protection layer 9 is filled between the metal inner tube 1 and the inner conductive metal base 3, the insulating protection layer 9 is insulating paper or insulating filler, and in the case of the insulating filler, the insulating filler is magnesium oxide filler.
Example 2:
as shown in fig. 3 and 4, on the basis of embodiment 1, another conduction mode is realized by changing the structure of the outer conductive metal base 4, and the structure is as follows, the outer conductive metal base 4 comprises arc-shaped pieces 41 and metal outer tubes 8, the number of the arc-shaped pieces 41 is equal to that of the PTC heating element groups 5, when the arc-shaped pieces 41 are combined, a cylinder with a circular cross section is formed, a second PTC heating element contact part 42 is arranged on one end surface of the arc-shaped piece 41 opposite to the PTC heating element groups 5, the second PTC heating element contact part 42 is completely contacted with the electrode coating of each PTC heating element in the PTC heating element groups 5, the metal outer tube 8 is sleeved outside the outer conductive metal base 4, and the metal outer tube 8 is contacted with the surface of each arc-shaped piece 41 to form conduction; gaps or insulation are arranged among the arc-shaped sheet 41, the inner conductive metal seat 3 and the PTC heating element group; the conductive column 7 is connected with one of the arc-shaped pieces 41, and all the arc-shaped pieces 41 are connected and conducted through the metal outer tube 8; the insulating layer 6 is coated outside the metal outer pipe 8 to meet the insulating requirement.
As shown in fig. 5, the present invention also discloses a water heater, which comprises the above-mentioned small PTC heater, wherein liquid flows through the metal inner tube 1, and after the PTC heating component 5 generates heat, the heat is conducted to the metal inner tube 1 through the inner conductive metal seat, so as to heat the liquid in the metal inner tube 1.
The utility model discloses set up interior conductive metal seat and outer conductive metal seat as the plate electrode outside the metal inner tube, set up PTC heating element group ring shape between interior conductive metal seat and outer conductive metal seat a week, then insulate between interior conductive metal seat and the metal inner tube, and insulate outside conductive metal seat, thereby simplified the structure, and interior, outer conductive fixing base still is used for carrying out the clamp to PTC heating element group and closes fixedly, interior conductive fixing base cover is established outside the metal inner tube, not only can make the heating more even; and the assembly is convenient, the heating effect is better under the same heating power, the energy consumption is low, and the safety is high because of adopting the PTC heating element.
Claims (10)
1. The utility model provides a small-size PTC heater, includes metal inner tube (1), is equipped with PTC heating element (2) on the outer wall of metal inner tube (1), its characterized in that: the PTC heating assembly (2) comprises an inner conductive metal seat (3) sleeved outside a metal inner tube (1), an outer conductive metal seat (4) arranged outside the inner conductive metal seat (3) and a PTC heating element group (5) arranged between the inner conductive metal seat (3) and the outer conductive metal seat (4), wherein the PTC heating element group (5) is in contact with the inner conductive metal seat (3) and the outer conductive metal seat (4), the PTC heating element group (5) surrounds the inner conductive metal seat (3) for a circle, each PTC heating element group (5) is provided with a plurality of PTC heating elements, the PTC heating elements are linearly arranged along the axial direction of the metal inner tube (1), an insulating layer (6) is coated outside the outer conductive metal seat (4), the metal inner tube (1) is insulated from the inner conductive metal seat (3), gaps or insulation are reserved among the inner conductive metal seat (3), the outer conductive metal seat (4) and the PTC heating element group (5), and the inner conductive metal base (3) and the outer conductive metal base (4) are respectively provided with a conductive column (7) which is connected and conducted with the inner conductive metal base (3) and the outer conductive metal base (4) so that the inner conductive metal base (3) and the outer conductive metal base (4) can be used as electrode plates.
2. A small PTC heater according to claim 1, wherein: one end surface of the inner conductive metal seat (3) opposite to the outer conductive metal seat (4) is provided with a circle of first PTC heating element contact parts (31), the number of the first PTC heating element contact parts (31) is equal to that of the PTC heating element groups (5), so that the electrode coating of each PTC heating element in the PTC heating element groups (5) is completely contacted with the first PTC heating element contact parts (31); a through hole (32) for the metal inner pipe (1) to pass through is arranged at the center of the inner conductive metal seat (3).
3. A small PTC heater according to claim 2, wherein: the cross-sectional shape of the inner conductive metal holder (3) is a regular polygon, and the first PTC heating element contact portion (31) is formed by each outer surface of the inner conductive metal holder (3).
4. A small PTC heater according to claim 2, wherein: the cross section of the inner conductive metal seat (3) is in a regular polygon shape, a groove (33) is arranged on the inner conductive metal seat (3) and positioned at the first PTC heating element contact part (31), and the first PTC heating element contact part (31) is formed by the groove wall (33) opposite to the outer conductive metal seat (4).
5. A small PTC heater according to claim 3 or 4, characterized in that: the outer conductive metal seat (4) is a cylinder with an annular cross section, the inner wall of the outer conductive metal seat (4) is provided with second PTC heating element contact parts (42) so as to realize contact conduction with electrode coatings of the PTC heating elements, and the number of the second PTC heating element contact parts (42) is the same as that of the PTC heating element groups (5).
6. A small PTC heater according to claim 3 or 4, characterized in that: the outer conductive metal seat (4) comprises arc-shaped pieces (41) and a metal outer tube (8), the number of the arc-shaped pieces is equal to that of the PTC heating element groups (5), a cylinder with a circular cross section is formed after the arc-shaped pieces (41) are combined, a second PTC heating element contact part (42) is arranged on the surface of one end, opposite to the PTC heating element groups (5), of each arc-shaped piece (41), the second PTC heating element contact part (42) is completely contacted with an electrode coating of each PTC heating element in the PTC heating element groups (5), and the metal outer tube (8) is sleeved outside the outer conductive metal seat (4) and enables the metal outer tube (8) to be contacted with the surface of each arc-shaped piece (41) to form conduction; gaps or insulation are arranged among the arc-shaped sheet (41), the PTC heating element group (5) and the inner conductive metal seat (3), and the insulating layer (6) is coated outside the metal outer tube (8).
7. A small PTC heater according to claim 1, wherein: an insulating protective layer (9) is filled between the metal inner pipe (1) and the inner conductive metal seat (3).
8. A small PTC heater according to claim 7, wherein: the insulating protective layer (9) is made of insulating paper or insulating filler.
9. A small PTC heater according to claim 8, wherein: the insulating filler is magnesium oxide filler.
10. A water heater, characterized by: a miniature PTC heater according to any of claims 1-9 is included.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120202271.0U CN214256663U (en) | 2021-01-25 | 2021-01-25 | Small PTC heater and water heater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120202271.0U CN214256663U (en) | 2021-01-25 | 2021-01-25 | Small PTC heater and water heater |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214256663U true CN214256663U (en) | 2021-09-21 |
Family
ID=77752148
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120202271.0U Active CN214256663U (en) | 2021-01-25 | 2021-01-25 | Small PTC heater and water heater |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214256663U (en) |
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2021
- 2021-01-25 CN CN202120202271.0U patent/CN214256663U/en active Active
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