CN219976745U - Waterproof PTC liquid heater - Google Patents
Waterproof PTC liquid heater Download PDFInfo
- Publication number
- CN219976745U CN219976745U CN202321490260.2U CN202321490260U CN219976745U CN 219976745 U CN219976745 U CN 219976745U CN 202321490260 U CN202321490260 U CN 202321490260U CN 219976745 U CN219976745 U CN 219976745U
- Authority
- CN
- China
- Prior art keywords
- ptc heating
- ring
- inner tube
- silica gel
- ptc
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 239000007788 liquid Substances 0.000 title claims abstract description 18
- 238000010438 heat treatment Methods 0.000 claims abstract description 71
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical group O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 43
- AZDRQVAHHNSJOQ-UHFFFAOYSA-N alumane Chemical group [AlH3] AZDRQVAHHNSJOQ-UHFFFAOYSA-N 0.000 claims abstract description 28
- 239000000741 silica gel Substances 0.000 claims abstract description 16
- 229910002027 silica gel Inorganic materials 0.000 claims abstract description 16
- 239000003292 glue Substances 0.000 claims abstract description 11
- 238000007789 sealing Methods 0.000 claims abstract description 11
- 229910052751 metal Inorganic materials 0.000 claims description 16
- 239000002184 metal Substances 0.000 claims description 16
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 7
- 229910052782 aluminium Inorganic materials 0.000 claims description 7
- 238000004382 potting Methods 0.000 claims description 7
- 239000000565 sealant Substances 0.000 claims description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 6
- 229920002379 silicone rubber Polymers 0.000 claims description 5
- 238000012856 packing Methods 0.000 claims description 2
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 8
- 239000000919 ceramic Substances 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 239000004945 silicone rubber Substances 0.000 description 4
- 229920001296 polysiloxane Polymers 0.000 description 2
- 238000005538 encapsulation Methods 0.000 description 1
- 239000000499 gel Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
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- Resistance Heating (AREA)
Abstract
The utility model discloses a waterproof type PTC liquid heater, which comprises a PTC heating component, an inner pipe and an outer pipe, wherein the PTC heating component is arranged around the outer wall of the inner pipe, the outer pipe is sleeved outside the PTC heating component, the PTC heating component comprises a lead end and a bottom end, one end of the inner pipe, which is positioned at the bottom end of the PTC heating component, is provided with an annular flange, the flange is sleeved on the inner pipe, the edge of the flange is welded and fixed with the edge of a pipe orifice of the outer pipe, one end of the lead end of the inner pipe, which is positioned at the PTC heating component, is sleeved with a silica gel ring so as to fill and seal a gap formed between the outer pipe and the one end of the inner pipe, a filling glue is filled between the silica gel ring and the lead end of the PTC heating component, an aluminum ring is arranged on the silica gel ring, the aluminum ring is sleeved on the inner pipe and compresses the silica gel ring, and filling and sealing silica gel is filled between the aluminum ring and the outer pipe and the flange. Compared with the prior art, the integral waterproof performance of the PTC liquid heater is realized, and the waterproof effect of the PTC liquid heater is improved, so that IP67 level waterproof performance is met.
Description
Technical Field
The utility model relates to a heater, in particular to a waterproof PTC liquid heater.
Background
The PTC ceramic core body of the PTC liquid heater core part can cause short circuit or damage of a circuit once the humidity of the use environment is high or water is sprayed, so that the waterproof structure around the inner core body is very important.
Most similar products in the existing market can only meet the waterproof requirement of IP65 or below. The PTC liquid heater needs a complex sealing structure due to a large number of outgoing lines, and a few products are coated with silicone rubber and normal-temperature curing glue to make IP67, so that the stability of the IP67 of the products cannot be ensured due to poor flowability of the silicone rubber and the normal-temperature curing glue; the PTC ceramic core is directly sealed by pouring sealant with good fluidity, and if the PTC ceramic core flows into the PTC ceramic core, the PTC element performance is affected, so that the heating effect is affected.
Disclosure of Invention
The utility model aims to provide a waterproof PTC liquid heater, which aims to solve the technical problem of improving waterproof effect.
In order to solve the problems, the utility model adopts the following technical scheme: the utility model provides a waterproof type PTC liquid heater, including PTC heating element, inner tube, outer tube, PTC heating element sets up a week around the outer wall of inner tube, the outer tube is outside PTC heating element, PTC heating element includes lead terminal and bottom, the one end that the inner tube is located PTC heating element bottom is equipped with annular ring flange, the ring flange cover is on the inner tube, the edge of ring flange and the mouth of pipe edge welded fastening of outer tube, the one end cover that the inner tube is located PTC heating element lead terminal has the silica gel ring, with pack the sealing to the space that this one end of outer tube and inner tube formed, pack and have the packing gel between silica gel ring and PTC heating element lead terminal, be equipped with the aluminium ring on the silica gel ring, the aluminium ring cover is on the inner tube and compress tightly the silica gel ring, pack has the embedment silica gel between aluminium ring and outer tube and between ring and the inner tube, be equipped with the lead through-hole on the silica gel ring, so that PTC heating element's lead is drawn forth from the lead through-hole, lead and lead through-hole seal, the flange, be interference fit between aluminium ring and the inner tube.
Further, one end surface of the flange plate, which is far away from the bottom end of the PTC heating assembly, is provided with a circle of filling groove, the filling groove is arranged at the edge of an inner hole of the flange plate, and the filling groove is filled with potting silica gel.
Further, the PTC heating assembly comprises an aluminum tube, and sealing glue is filled at two ends of the aluminum tube respectively.
Further, the sealant is silicone rubber.
Further, one end of the inner tube positioned at the lead end of the PTC heating assembly is sleeved with a metal ring, the metal ring is in interference fit with the inner tube, and the metal ring is arranged between the silica gel ring, the filling glue and the inner tube so as to limit the PTC heating assembly and prevent the PTC heating assembly from loosening, and the aluminum ring is pressed on the metal ring.
Compared with the prior art, the utility model has the advantages that the flange ring is arranged at one end of the inner tube and the outer tube, which are positioned at the bottom end of the PTC heating component, the periphery of the flange ring is welded with the outer tube, the filling and sealing silica gel is filled between the inner tube and the inner tube, the filling and sealing silica gel, the silica gel ring and the aluminum ring are sequentially arranged at one end of the inner tube and the outer tube, which are positioned at the lead end of the PTC heating component, and the filling and sealing silica gel is filled between the aluminum ring and the outer tube, so that the integral waterproof of the PTC liquid heater is realized, the waterproof effect of the PTC liquid heater is improved, and the IP67 level waterproof is met.
Drawings
Fig. 1 is a schematic perspective view of the present utility model.
Fig. 2 is a cross-sectional view taken along the direction C-C in fig. 1.
Fig. 3 is a schematic view of the connection between the bottom end of the PTC heating assembly and the inner and outer tubes of the present utility model.
Fig. 4 is a second schematic view of the connection between the bottom end of the PTC heating assembly and the inner and outer tubes of the present utility model.
Fig. 5 is a schematic view of the connection between the lead terminals of the PTC heating assembly of the present utility model and the inner and outer tubes.
Fig. 6 is a second schematic view of the connection between the lead terminals of the PTC heating assembly of the present utility model and the inner and outer tubes.
Fig. 7 is a schematic view of the structure of the PTC heating assembly of the present utility model.
Detailed Description
The utility model is described in further detail below with reference to the drawings and examples.
As shown in fig. 1 to 6, the utility model discloses a PTC heating assembly 1, an inner tube 2 and an outer tube 3, wherein the PTC heating assembly 1 is arranged around the outer wall of the inner tube 2, the outer tube 3 is sleeved outside the PTC heating assembly 1, the length of the inner tube 2 is longer than that of the outer tube 3, so that the inner tube 2 extends out of the outer tube 3, the PTC heating assembly 1 comprises a lead end and a bottom end, an annular flange 4 is arranged at one end of the inner tube 2, which is positioned at the bottom end of the PTC heating assembly 1, the flange 4 is sleeved on the inner tube 2, the edge of the flange 4 is welded and fixed with the edge of a pipe orifice of the outer tube 3, one end of the inner tube 2, which is positioned at the lead end of the PTC heating assembly 1, is filled with a filling glue 9, a silica gel ring 5 is arranged on the filling glue 9, the silica gel ring 5 is sleeved on the inner tube 2, the outer diameter of the silica gel ring 5 is slightly larger than the gap between the appearance 3 and the inner tube 2, the gap formed by one end of the outer tube 3 and the inner tube 2 is filled and sealed, the silica gel ring 5 is provided with the aluminum ring 6, the aluminum ring 6 is sleeved on the inner tube 2 and compresses the silica gel ring 5, potting silica gel 7 is filled between the aluminum ring 6 and the outer tube 3 and between the flange 4 and the inner tube 2 so as to realize water resistance, the silica gel ring 5 is provided with the lead through holes 51, so that the leads of the PTC heating assembly 1 are led out from the lead through holes 51, the leads are sealed with the lead through holes 51, the lead ends of the PTC heating assembly 1 are sealed through the silica gel ring 5 and the potting silica gel 7, the problem that the potting silica gel flows into the two side surfaces of the PTC heating element of the PTC heating assembly 1 to cause a chip frying can be prevented, the waterproof effect is improved, and the two ends of the inner tube 2 extend out of the flange 4 and the aluminum ring 6 so as to be used for being connected with parts such as a chuck.
As shown in fig. 2, after the PTC heating assembly 1 is assembled with the outer tube 3 and the inner tube 2, a drop is provided between the two ends of the outer tube 3 and the lead ends and the bottom ends of the PTC heating assembly 1 to satisfy the assembly requirement, and the silicone ring 5 and the potting silicone 7 are disposed in the drop.
In the utility model, the specific filling position of the filling silica gel 7 filled between the aluminum ring 6 and the outer tube 3 is the end port of the outer tube 3, and the filling silica gel 7 is aligned with the end port; the aluminium ring 6 extends out of the outer tube 3.
In the utility model, the waterproof effect is improved by sealing the outer tube and the inner tube.
The flange 4, the outer tube 3 and the inner tube 2 are all made of stainless steel materials.
As shown in fig. 2 to 4, a peripheral filling groove 41 is formed in the surface of one end of the flange 4 far away from the bottom end of the PTC heating assembly 1, the filling groove 41 is formed at the edge of the inner hole of the flange 4, the potting silica gel 7 is filled in the filling groove 41, the filling groove 41 is also used for limiting the PTC heating assembly 1, and specifically, the groove edge of the back surface of one end of the filling groove 41 opposite to the PTC heating assembly 1 is propped against the bottom end of the PTC heating assembly 1.
In the utility model, the flange 4, the aluminum ring 6 and the inner tube 2 are in interference fit, the interference fit is realized by performing a tube expansion process on the inner tube 2, and the outer wall of the inner tube 2, the inner wall of the outer tube 3 and the surface of the PTC heating assembly 1 can be tightly attached by performing the tube expansion process on the inner tube 2, so that the heat conduction effect is improved.
As shown in fig. 2, 5 and 6, a metal ring 8 is sleeved at one end of the inner tube 2, which is positioned at the lead end of the PTC heating assembly 1, the metal ring 8 is in interference fit with the inner tube 2, and the metal ring 8 is arranged between the silica gel ring 5, the filling glue 9 and the inner tube 2 so as to limit the PTC heating assembly 1 and prevent the PTC heating assembly from loosening, and the aluminum ring 6 is pressed on the metal ring 8.
After the outer tube 3, the PTC heating component 1, the flange plate 4, the metal ring 8 and the aluminum ring 6 are assembled on the inner tube 2, the PTC heating component 1 is tightly pressed between the outer tube 3 and the inner tube 2 through a tube expansion process, and the flange plate 4, the metal ring 8 and the aluminum ring 6 are fixed on the inner tube 2.
As shown in fig. 7, in general, the PTC heating assembly 1 includes an aluminum tube 11, both ends of the aluminum tube 11 being respectively filled with a sealant 12 to further improve the waterproof effect. The sealant 12 is made of silicone rubber.
As shown in fig. 1, a temperature controller 13 may be provided outside the aluminum ring 6.
When the PTC heating assembly is assembled, firstly, sealant 12 is coated at two ends of an aluminum tube 11 of the PTC heating assembly 1, a flange 4 is welded and fixed with one end of an outer tube 3, then the outer tube 3 is sleeved outside an inner tube 2, after the inner tube 2 penetrates through the flange 4, the PTC heating assembly 1 is assembled in a gap between the outer tube 3 and the inner tube 2, the bottom end of the PTC heating assembly 1 is opposite to the flange 4, a metal ring 8 is sleeved at one end of the inner tube 2 positioned at a lead end of the PTC heating assembly 1, a silica gel ring 5 is sleeved in a gap between the inner tube 2 and the outer tube 3 positioned at one end of the lead end of the PTC heating assembly 1 after filling the silica gel 9, the lead of the PTC heating assembly 1 penetrates through a lead through hole 51, finally, an aluminum ring 6 is sleeved at one end of the inner tube 2 positioned at the lead end of the PTC heating assembly 1 and is compressed, then the inner tube 2 is respectively in interference fit with the flange 4, the metal ring 8 and the aluminum ring 6 through an expansion tube process, and finally, silica gel encapsulation 7 is filled between the aluminum ring 6 and the outer tube 3 and the flange 4 and the inner tube 2, so that final sealing is achieved.
Through the structure, the waterproof performance of the PTC liquid heater is improved, so that the waterproof requirement of IP67 level is met.
Claims (5)
1. The utility model provides a waterproof type PTC liquid heater, includes PTC heating element (1), inner tube (2), outer tube (3), PTC heating element (1) sets up a week around the outer wall of inner tube (2), and outer tube (3) cover is outside PTC heating element (1), its characterized in that: the PTC heating assembly (1) comprises a lead end and a bottom end, wherein one end of the inner tube (2) positioned at the bottom end of the PTC heating assembly (1) is provided with an annular flange plate (4), the flange plate (4) is sleeved on the inner tube (2), the edge of the flange plate (4) is welded and fixed with the pipe opening edge of the outer tube (3), one end of the lead end of the inner tube (2) positioned at the PTC heating assembly (1) is sleeved with a silica gel ring (5), a gap formed by the outer tube (3) and the inner tube (2) is filled and sealed, a filling glue (9) is filled between the silica gel ring (5) and the lead end of the PTC heating assembly (1), an aluminum ring (6) is arranged on the silica gel ring (5), the aluminum ring (6) is sleeved on the inner tube (2) and compresses the silica gel ring (5), a filling and sealing silica gel (7) is filled between the aluminum ring (6) and the outer tube (3) and the flange plate (4) and the inner tube (2), the silica gel ring (5) is provided with a through hole (51) so that the lead of the PTC heating assembly (1) is in an interference fit with the through hole (51), and the lead wire of the inner tube (2) is led out of the flange plate (4).
2. A water resistant PTC liquid heater according to claim 1, wherein: one end surface of the flange plate (4) far away from the bottom end of the PTC heating assembly (1) is provided with a circle of filling groove (41), the filling groove (41) is arranged at the edge of an inner hole of the flange plate (4), and the filling groove (41) is filled with potting silica gel (7).
3. A water resistant PTC liquid heater according to claim 2, wherein: the PTC heating assembly (1) comprises an aluminum pipe (11), and sealing glue (12) is respectively filled at two ends of the aluminum pipe (11).
4. A water resistant PTC liquid heater according to claim 3, wherein: the sealant (12) is silicon rubber.
5. A water resistant PTC liquid heater according to claim 4 wherein: the inner tube (2) is located one end cover of PTC heating element (1) lead terminal has metal ring (8), metal ring (8) and inner tube (2) interference fit, and metal ring (8) set up between silica gel ring (5), packing glue (9) and inner tube (2) to spacing PTC heating element (1), prevent that it from becoming flexible, aluminium ring (6) are pressed on metal ring (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321490260.2U CN219976745U (en) | 2023-06-12 | 2023-06-12 | Waterproof PTC liquid heater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321490260.2U CN219976745U (en) | 2023-06-12 | 2023-06-12 | Waterproof PTC liquid heater |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219976745U true CN219976745U (en) | 2023-11-07 |
Family
ID=88584581
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321490260.2U Active CN219976745U (en) | 2023-06-12 | 2023-06-12 | Waterproof PTC liquid heater |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219976745U (en) |
-
2023
- 2023-06-12 CN CN202321490260.2U patent/CN219976745U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |