EP3276281B1 - Ptc heater for liquid heating - Google Patents

Ptc heater for liquid heating Download PDF

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Publication number
EP3276281B1
EP3276281B1 EP17158317.2A EP17158317A EP3276281B1 EP 3276281 B1 EP3276281 B1 EP 3276281B1 EP 17158317 A EP17158317 A EP 17158317A EP 3276281 B1 EP3276281 B1 EP 3276281B1
Authority
EP
European Patent Office
Prior art keywords
water
duct
ptc heater
liquid heating
water outlet
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.)
Active
Application number
EP17158317.2A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP3276281A1 (en
Inventor
Shuiyong HUANG
Jiang Xu
Guoping Li
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Bestway Inflatables and Material Corp
Original Assignee
Bestway Inflatables and Material Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
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Publication of EP3276281A1 publication Critical patent/EP3276281A1/en
Application granted granted Critical
Publication of EP3276281B1 publication Critical patent/EP3276281B1/en
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H1/00—Water heaters, e.g. boilers, continuous-flow heaters or water-storage heaters
    • F24H1/10—Continuous-flow heaters, i.e. heaters in which heat is generated only while the water is flowing, e.g. with direct contact of the water with the heating medium
    • F24H1/12—Continuous-flow heaters, i.e. heaters in which heat is generated only while the water is flowing, e.g. with direct contact of the water with the heating medium in which the water is kept separate from the heating medium
    • F24H1/14—Continuous-flow heaters, i.e. heaters in which heat is generated only while the water is flowing, e.g. with direct contact of the water with the heating medium in which the water is kept separate from the heating medium by tubes, e.g. bent in serpentine form
    • F24H1/142—Continuous-flow heaters, i.e. heaters in which heat is generated only while the water is flowing, e.g. with direct contact of the water with the heating medium in which the water is kept separate from the heating medium by tubes, e.g. bent in serpentine form using electric energy supply
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
    • E04H4/00—Swimming or splash baths or pools
    • E04H4/12—Devices or arrangements for circulating water, i.e. devices for removal of polluted water, cleaning baths or for water treatment
    • E04H4/129—Systems for heating the water content of swimming pools
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H9/00—Details
    • F24H9/12—Arrangements for connecting heaters to circulation pipes
    • F24H9/13—Arrangements for connecting heaters to circulation pipes for water heaters
    • F24H9/139—Continuous flow heaters
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H9/00—Details
    • F24H9/18—Arrangement or mounting of grates or heating means
    • F24H9/1809—Arrangement or mounting of grates or heating means for water heaters
    • F24H9/1818—Arrangement or mounting of electric heating means
    • F24H9/1827—Positive temperature coefficient [PTC] resistor
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H2250/00—Electrical heat generating means
    • F24H2250/04—Positive or negative temperature coefficients, e.g. PTC, NTC

Definitions

  • the present disclosure relates to a heater, particularly to a PTC heater for liquid heating.
  • PTC Platinum Temperature Coefficient
  • One type of common PTC heaters in the prior art may include a heat conductor and a PTC heating element.
  • a plurality of ducts is provided within the heat conductor. Some of the ducts are used for placing PTC heating elements while some of the ducts are used for liquid passage.
  • a PTC heater according to the preamble of claim 1 is know from patent DE2948591 A1 .
  • the heat conductors for some of the PTC heaters employ metal materials without an anti-corrosion treatment, which are prone to corrosion after long-term use.
  • the oxidation and corrosion of the heat conductor will be accelerated to cause the leakage of liquid easily from the ducts inside the heat conductor. It is an increase in the risk of safety.
  • a technical problem to be solved by the present disclosure is to provide a PTC heater for liquid heating in order to overcome the defect that the PTC heaters in the prior art are prone to corrosion during long-term use.
  • a PTC (Positive Temperature Coefficient) heater for liquid heating may include:
  • the first and second accommodating ducts are disposed in parallel.
  • the first accommodating duct is disposed between at least two second accommodating ducts.
  • the heat conductor is a material of an aluminum alloy.
  • the water pipe assembly is a material of a corrosion-resistant heat-conducting material.
  • the water pipe assembly is a material of one of stainless steel, stainless iron and copper.
  • the water pipe assembly may include at least one water inlet pipe and at least one water outlet pipe, at least one of ends of the water inlet pipe extends out of the second accommodating duct, and at least one of ends of the water outlet pipe extends out of the second accommodating duct.
  • the PTC heater may further include a water inlet portion, the water inlet portion includes a water inlet duct, the water inlet portion is connected to a first end of the water inlet pipe, and the water inlet duct is in communication with the water inlet pipe.
  • the first end of the water inlet pipe is disposed inside the water inlet duct of the water inlet portion.
  • the water inlet portion is connected to a first end of the heat conductor.
  • a seal is disposed between an outer surface of the first end of the water inlet pipe and an inner surface of the water inlet duct of the water inlet portion.
  • a seal is disposed between an end face of the water inlet portion and an end face of the first end of the heat conductor.
  • the PTC heater for liquid heating may further include a water outlet portion, the water outlet portion includes a water outlet duct, the water outlet portion is connected to a first end of the water outlet pipe, and the water outlet duct of the water outlet portion is in fluid communication with the water outlet pipe.
  • the first end of the water outlet pipe is disposed inside the water outlet duct of the water outlet portion.
  • the water outlet portion is connected to a first end of the heat conductor.
  • a seal is disposed between an outer surface of the first end of the water outlet pipe and an inner surface of the water outlet duct of the water outlet portion.
  • a seal is disposed between an end face of the water outlet portion and an end face of the first end of the heat conductor.
  • the PTC heater for liquid heating may further include a connecting portion, the connecting portion includes a water flow duct, the connecting portion is connected to a second end of the water inlet pipe and a second end of the water outlet pipe respectively, and the water flow duct is in fluid communication with the water inlet pipe and the water outlet duct.
  • the connecting portion is connected to a second end of the heat conductor, the second end of the water inlet pipe and the second end of the water outlet pipe being disposed inside the water flow duct of the connecting portion.
  • the connecting portion is connected to the second end of the heat conductor.
  • a seal is disposed between an outer surface of the second end of the water inlet pipe and an inner surface of the water flow duct of the connecting portion, and a seal is disposed between an outer surface of the second end of the water outlet pipe and an inner surface of the water flow duct of the connecting portion.
  • a seal is disposed between an end face of the connecting portion and an end face of the heat conductor.
  • the water pipe assembly may include at least one U-shaped water pipe at least partially disposed in the second accommodating duct.
  • the PTC heater for liquid heating may further include a water inlet portion, the water inlet portion includes a water inlet duct, the water inlet portion is connected to a first end of the U-shaped water pipe, and the water inlet portion is in fluid communication with the U-shaped water pipe.
  • the first end of the U-shaped water pipe is disposed inside the water inlet duct of the water inlet portion.
  • the water inlet portion is connected to a first end of the heat conductor.
  • a seal is disposed between an outer surface of the first end of the U-shaped water pipe and an inner surface of the water inlet duct of the water inlet portion.
  • a seal is disposed between an end face of the water inlet portion and an end face of the first end of the heat conductor.
  • the PTC heater for liquid heating may further include a water outlet portion, the water outlet portion includes a water outlet duct, the water outlet portion is connected to a second end of the U-shaped water pipe, and the water outlet duct of the water outlet portion is in fluid communication with the U-shaped water pipe.
  • the second end of the U-shaped water pipe is disposed inside the water outlet duct of the water outlet portion.
  • the water outlet portion is connected to a first end of the heat conductor.
  • a seal is disposed between an outer surface of the second end of the U-shaped water pipe and an inner surface of the water outlet duct of the water outlet portion.
  • a seal is provided between an end face of the water outlet portion and an end face of the first end of the heat conductor.
  • the heat conductor is an integrally formed component, and the integrally formed component is a one-piece metal alloy shell.
  • the heat conductor may include:
  • the first and second grooves are profiled grooves.
  • the water pipe assembly may include a profiled water pipe fastened to the second accommodating duct.
  • the PTC liquid heating tube of the present disclosure can achieve a better corrosion resistance, greatly extend the service life of the PTC heater and prevent electric leakage accidents. Furthermore, the PTC heater for liquid heating of the present disclosure has a simple structure and low costs, and is convenient to assemble, especially in the replacement of the water pipes for maintaining the PTC heater in future.
  • Fig. 1 is a first structural schematic view of a first embodiment of a PTC heater for liquid heating of the present disclosure.
  • Fig. 2 is a second structural schematic view of the first embodiment of the PTC heater for liquid heating of the present disclosure.
  • Fig. 3 is a third structural schematic view of the first embodiment of the PTC heater for liquid heating of the present disclosure.
  • Fig. 4 is a longitudinal sectional view of the first embodiment of the PTC heater for liquid heating of the present disclosure.
  • Fig. 5 is an exploded view of the first embodiment of the PTC heater for liquid heating of the present disclosure.
  • a PTC heater for liquid heating 10 which may include a heat conductor 11, a PTC heating assembly 12 and at least one water pipe assembly 13.
  • the heat conductor 11 is provided with at least one first accommodating duct and at least one second accommodating duct
  • the PTC heating assembly 12 is at least partially provided in the first accommodating duct
  • the water pipe assembly 13 is at least partially provided in the second accommodating duct
  • an outer surface of the water pipe assembly 13 at least partially abuts against an inner surface of the second accommodating duct.
  • the first and second accommodating ducts are disposed in parallel. Particularly, the first accommodating duct is disposed between the second accommodating ducts.
  • the PTC heating assembly 12 can include a PTC heating element, a first electrode, a second electrode, a first protection layer, a second protection layer, a first interlayer, and a second interlayer.
  • the PTC heating element has a first side and a second side.
  • the first electrode and the second electrode can be positioned on the first side of the PTC heating element and the second side of the PTC heating element respectively.
  • the first insulating interlayer can be located between the first protection layer and the first electrode.
  • the second insulating interlayer can be located between the second protection layer and the second electrode.
  • the first protection layer and the second protection layer can have a greater hardness in comparison with the first and second insulating interlayer.
  • the PTC heating assembly 12 can further include a heat conductive housing.
  • the first interlayer and second insulating interlayer are placed into the heat conductive housing.
  • a first side wall and a second side wall of the heat conductive housing are inwardly curved.
  • the heat conductor includes a first component 111 and a second component 112.
  • the first component 111 is disposed with the first accommodating duct 113 and a first groove 114 which is disposed at an outer surface of the first component 111
  • the second component 112 is detachably connected to the first component 111
  • the second component 112 is disposed with a second groove 115 corresponding to the first groove 114.
  • the first component 111 is connected to the second component 112
  • the second groove 115 and the first groove 114 are combined to form the second accommodating duct, and the water pipe assembly 13 may be disposed in the second accommodating duct.
  • first groove 114 and the second groove 115 herein may also be profiled grooves, and the water pipe assembly 13 can include a profiled water pipe fastened to the second accommodating duct accordingly.
  • the type of the second accommodating duct can be particular corresponding with the type of the profiled groove in accordance with the configuration of first groove 114 and second groove 115.
  • the type of the profiled groove can be the S-shaped groove, U-shaped groove, or other specific shape of the groove.
  • shape of the profiled water pipe can be matched with the type of profiled groove to achieve the assembling of pipe being disposed inside the heat conductor 11.
  • the water pipe assembly 13 in this embodiment may include at least one U-shaped water pipe 131, and the U-shaped water pipe 131 is at least partially disposed in the second accommodating ducts.
  • the PTC heater for liquid heating 10 may further include a water inlet portion 14, and the water inlet portion 14 is provided with a water inlet duct 141.
  • the water inlet portion 14 is connected to a first end of the U-shaped water pipe 131, and the water inlet portion 141 is in communication with the U-shaped water pipe 131.
  • the first end of the U-shaped water pipe 131 is disposed in the water inlet duct 141 of the water inlet portion 14, such that the water inlet portion is connected to the first end of the heat conductor 11.
  • Seals 142 are disposed both between an outer surface of the first end of the U-shaped water pipe 131 and an inner surface of the water inlet duct 141 of the water inlet portion 14, and between an end face of the water inlet portion 14 and an end face of the first end of the heat conductor 11.
  • the PTC heater for liquid heating 10 may further include a water outlet portion 15, and the water outlet portion 15 is provided with a water outlet duct 151, wherein the water outlet portion 15 is connected to a second end of the U-shaped water pipe 131, and the water outlet duct 151 of the water outlet portion 15 is in communication with the U-shaped water pipe 131.
  • the second end of the U-shaped water pipe 131 is disposed in the water outlet duct 151 of the water outlet portion 15, such that the water outlet portion 15 is connected to the first end of the heat conductor 11.
  • Seals 152 are disposed both between an outer surface of the second end of the U-shaped water pipe 131 and an inner surface of the water outlet duct 151 of the water outlet portion 15, and between an end face of the water outlet portion 15 and the end face of the first end of the heat conductor 11.
  • the material of the heat conductor 11 is an aluminium alloy and the material of the water pipe assembly 13 is one of stainless steel or copper.
  • Fig. 6 is a first structural schematic view of a second embodiment of the PTC heater for liquid heating of the present disclosure.
  • Fig. 7 is a second structural schematic view of the second embodiment of the PTC heater for liquid heating of the present disclosure.
  • Fig. 8 is a third structural schematic view of the second embodiment of the PTC heater for liquid heating of the present disclosure.
  • Fig. 9 is a longitudinal sectional view of the second embodiment of the PTC heater for liquid heating of the present disclosure.
  • Fig. 10 is an exploded view of the second embodiment of the PTC heater for liquid heating of the present disclosure.
  • the present disclosure discloses another PTC heater for liquid heating 20, which may include a heat conductor 21, a PTC heating assembly 22 and at least one water pipe assembly 23.
  • the heat conductor 21 in this embodiment is made of an integrally formed component.
  • the heat conductor 21 is provided with a first accommodating duct 211 and second accommodating ducts 212
  • the PTC heating assembly 22 is at least partially disposed in the first accommodating duct 211
  • the water pipe assembly 23 is at least partially disposed in the second accommodating duct 212
  • an outer surface of the water pipe assembly 23 at least partially abuts against an inner surface of the second accommodating duct 212.
  • the first accommodating duct 211 and the second accommodating ducts 212 are disposed in parallel.
  • the first accommodating duct 211 is disposed between the second accommodating ducts 212.
  • the water pipe assembly 23 in this embodiment may include at least one U-shaped water pipe which is at least partially disposed in the second accommodating ducts 212.
  • the PTC heater for liquid heating 20 may further include a water inlet portion 24, and the water inlet portion 24 is provided with a water inlet duct 241.
  • the water inlet portion 24 is connected to a first end of the U-shaped water pipe 231, and the water inlet portion 241 is in communication with the U-shaped water pipe 231.
  • the first end of the U-shaped water pipe 231 is disposed in the water inlet duct 241 of the water inlet portion 24, such that the water inlet portion is connected to the first end of the heat conductor 21.
  • Seals 242 are disposed both between an outer surface of the first end of the U-shaped water pipe 231 and an inner surface of the water inlet duct 241 of the water inlet portion 24, and between an end face of the water inlet portion 24 and an end face of the first end of the heat conductor 21.
  • the PTC heater for liquid heating 20 may further include a water outlet portion 25, and the water outlet portion 25 is provided with a water outlet duct 251, wherein the water outlet portion 25 is connected to a second end of the U-shaped water pipe 231, and the water outlet duct 251 of the water outlet portion 25 is in communication with the U-shaped water pipe 231.
  • the second end of the U-shaped water pipe 231 is disposed in the water outlet duct 251 of the water outlet portion 25, such that the water outlet portion 25 is connected to the first end of the heat conductor 21.
  • Seals 252 are disposed both between an outer surface of the second end of the U-shaped water pipe 231 and an inner surface of the water outlet duct 251 of the water outlet portion 25, and between an end face of the water outlet portion 25 and the end face of the first end of the heat conductor 21.
  • the material of the heat conductor 21 in this embodiment may preferably be an aluminum alloy.
  • the material of the water pipe assembly 23 may preferably be a corrosion-resistant heat-conducting material, such as one of stainless steel, stainless iron or copper.
  • Fig. 11 is a first structural schematic view of a third embodiment of the PTC heater for liquid heating of the present disclosure.
  • Fig. 12 is a second structural schematic view of a third embodiment of the PTC heater for liquid heating of the present disclosure.
  • Fig. 13 is a third structural schematic view of the third embodiment of the PTC heater for liquid heating of the present disclosure.
  • Fig. 14 is a longitudinal sectional view of the third embodiment of the PTC heater for liquid heating of the present disclosure.
  • Fig. 15 is an exploded view of the third embodiment of the PTC heater for liquid heating of the present disclosure.
  • a PTC heater for liquid heating 30, which may include a heat conductor 31, a PTC heating assembly 32 and at least one water pipe assembly 33.
  • the heat conductor 31 is provided with first and second accommodating ducts
  • the PTC heating assembly 32 is at least partially disposed in the first accommodating duct
  • the water pipe assembly 33 is at least partially disposed in the second accommodating duct
  • an outer surface of the water pipe assembly 33 at least partially abuts against an inner surface of the second accommodating duct.
  • the first and second accommodating ducts are disposed in parallel. Particularly, the first accommodating duct is disposed between the second accommodating ducts.
  • the heat conductor 31 includes a first component 311 and a second component 312.
  • the first component 311 is provided with the first accommodating duct 313 and a first groove 314 which is disposed at an outer surface of the first component 311, the second component 312 is detachably connected to the first component 311, and the second component 312 is provided with a second groove 315 corresponding to the first groove 314.
  • the first component 311 is connected to the second component 312, the second groove 315 and the first groove 314 are combined to form the second accommodating duct, and the water pipe assembly 33 may be disposed in the second accommodating duct.
  • first groove 314 and the second groove 315 herein may also be profiled grooves, and the water pipe assembly 33 can include a profiled water pipe fastened to the second accommodating duct accordingly.
  • the type of the second accommodating duct can be particular corresponding with the type of the profiled groove in accordance with the configuration of first groove 314 and second groove 315.
  • the type of the profiled groove can be the S-shaped groove, U-shaped groove, or other specific shape of the groove.
  • the shape of the profiled water pipe can be matched with the type of profiled groove to achieve the assembling of pipe being disposed inside the heat conductor 31.
  • the water pipe assembly 33 in this embodiment may include at least one water inlet pipe 331 and at least one water outlet pipe 332. At least one end of the water inlet pipe 331 and at least one end of the water outlet pipe 332 extend out of the second accommodating duct.
  • the water pipe assembly 33 in the PTC heater for liquid heating 30 may further include a connecting portion 333, the connecting portion 333 is provided with a water flow duct, the connecting portion 333 is connected to a second end of the water inlet pipe 331 and a second end of the water outlet pipe 332 respectively, and the water flow duct is in communication with the water inlet pipe 331 and the water outlet duct 332.
  • Seals 334 are disposed between an outer surface of the second end of the water inlet pipe 331 and an inner surface of the water flow duct of the connecting portion 333, and between an outer surface of the second end of the water outlet pipe 332 and an inner surface of the water flow duct of the connecting portion 333.
  • a seal 334 may also be disposed between an end face of the connecting portion 333 and an end face of the heat conductor 31.
  • the PTC heater for liquid heating 30 may further include a water inlet portion 34, and the water inlet portion 34 is provided with a water inlet duct 341.
  • the water inlet portion 34 is connected to a first end of the water inlet pipe 331, and the water inlet duct 341 is in communication with the water inlet pipe 331.
  • the first end of the water inlet pipe 331 is disposed in the water inlet duct 341 of the water inlet portion 34, such that the water inlet portion 34 is connected to the first end of the heat conductor 11.
  • Seals 342 are disposed both between an outer surface of the first end of the water inlet pipe 331 and an inner surface of the water inlet duct 341 of the water inlet portion 34, and between an end face of the water inlet portion 34 and an end face of the first end of the heat conductor 31.
  • the PTC heater for liquid heating 30 may further include a water outlet portion 35, and the water outlet portion 35 is provided with a water outlet duct 351, wherein the water outlet portion 35 is connected to the first end of the water inlet pipe 332, and the water outlet duct 351 of the water outlet portion 35 is in communication with the water outlet pipe 332.
  • the first end of the water outlet pipe 332 is disposed in the water outlet duct 351 of the water outlet portion 35, such that the water outlet portion 35 is connected to the first end of the heat conductor 31.
  • Seals 352 are disposed both between an outer surface of the first end of the water outlet pipe 332 and an inner surface of the water outlet duct 351 of the water outlet portion 35, and between an end face of the water outlet portion 35 and the end face of the first end of the heat conductor 31.
  • the material of the heat conductor 31 is an aluminium alloy and the material of the water pipe assembly 33 is one of stainless steel or copper.
  • Fig. 16 is a first structural schematic view of a fourth embodiment of the PTC heater for liquid heating of the present disclosure.
  • Fig. 17 is a second structural schematic view of the fourth embodiment of the PTC heater for liquid heating of the present disclosure.
  • Fig. 18 is a third structural schematic view of the fourth embodiment of the PTC heater for liquid heating of the present disclosure.
  • Fig. 19 is a longitudinal sectional view of the fourth embodiment of the PTC heater for liquid heating of the present disclosure.
  • Fig. 20 is an exploded view of the fourth embodiment of the PTC heater for liquid heating of the present disclosure.
  • the present disclosure discloses yet another PTC heater for liquid heating 40, which may include a heat conductor 41, a PTC heating assembly 42 and at least one water pipe assembly 43.
  • the heat conductor 41 in this embodiment is made of an integrally formed component.
  • the heat conductor 41 is provided with a first accommodating duct 411 and second accommodating ducts 412
  • the PTC heating assembly 42 is at least partially disposed in the first accommodating duct 411
  • the water pipe assembly 43 is at least partially disposed in the second accommodating duct 412
  • an outer surface of the water pipe assembly 43 at least partially abuts against an inner surface of the second accommodating duct 412.
  • the first accommodating duct 411 and the second accommodating ducts 412 are disposed in parallel.
  • the first accommodating duct 411 is disposed between the second accommodating ducts 412.
  • the water pipe assembly 43 in this embodiment may include at least one water inlet pipe 431 and at least one water outlet pipe 432. At least one end of the water inlet pipe 431 and at least one end of the water outlet pipe 432 extend out of the second accommodating duct 412.
  • the water pipe assembly 43 in the PTC heater for liquid heating 40 may further include a connecting portion 433, the connecting portion 433 is provided with a water flow duct, the connecting portion 433 is connected to a second end of the water inlet pipe 431 and a second end of the water outlet pipe 432 respectively, and the water flow duct is in communication with the water inlet pipe 431 and the water outlet duct 432.
  • Seals 434 are disposed both between a surface of the second end of the water inlet pipe 431 and an inner surface of the water flow duct of the connecting portion 433, and between the second end of the water outlet pipe 432 and an inner surface of the water flow duct of the connecting portion 433, and may be also disposed between an end face of the connecting portion 433 and an end face of the heat conductor 41.
  • the PTC heater for liquid heating 40 may further include a water inlet portion 44, and the water inlet portion 44 is provided with a water inlet duct 441.
  • the water inlet portion 44 is connected to a first end of the water inlet pipe 431, and the water inlet duct 441 is in communication with the water inlet pipe 431.
  • the first end of the water inlet pipe 431 is disposed in the water inlet duct 441 of the water inlet portion 44, such that the water inlet portion 44 is connected to the first end of the heat conductor 41.
  • Seals 442 are disposed both between an outer surface of the first end of the water inlet pipe 431 and an inner surface of the water inlet duct 441 of the water inlet portion 44, and between an end face of the water inlet portion 44 and an end face of the first end of the heat conductor 41.
  • the PTC heater for liquid heating 40 may further include a water outlet portion 45, and the water outlet portion 45 is provided with a water outlet duct 451, wherein the water outlet portion 45 is connected to the first end of the water inlet pipe 432, and the water outlet duct 451 of the water outlet portion 45 is in communication with the water outlet pipe 432.
  • the first end of the water outlet pipe 432 is disposed in the water outlet duct 451 of the water outlet portion 45, such that the water outlet portion 45 is connected to the first end of the heat conductor 41.
  • Seals 452 are disposed both between an outer surface of the first end of the water outlet pipe 432 and an inner surface of the water outlet duct 451 of the water outlet portion 45, and between an end face of the water outlet portion 45 and the end face of the first end of the heat conductor 41.
  • the material of the heat conductor 41 in this embodiment may preferably be an aluminum alloy.
  • the material of the water pipe assembly 43 may preferably be a corrosion-resistant heat-conducting material, such as one of stainless steel, stainless iron or copper.
  • Fig. 21 is a first structural schematic view of a fifth embodiment of the PTC heater for liquid heating of the present disclosure.
  • Fig. 22 is a second structural schematic view of the fifth embodiment of the PTC heater for liquid heating of the present disclosure.
  • Fig. 23 is a third structural schematic view of the fifth embodiment of the PTC heater for liquid heating of the present disclosure.
  • Fig. 24 is a longitudinal sectional view of the fifth embodiment of the PTC heater for liquid heating of the present disclosure.
  • Fig. 25 is an exploded view of the fifth embodiment of the PTC heater for liquid heating of the present disclosure.
  • the present disclosure discloses another PTC heater for liquid heating 50, which may include a heat conductor 51, a PTC heating assembly 52 and at least one water pipe assembly 53.
  • the heat conductor 51 in this embodiment is made of an integrally formed component.
  • the heat conductor 51 is provided with a first accommodating duct 511 and second accommodating ducts 512
  • the PTC heating assembly 52 is at least partially disposed in the first accommodating duct 511
  • the water pipe assembly 53 is at least partially disposed in the second accommodating duct 512
  • an outer surface of the water pipe assembly 53 at least partially abuts against an inner surface of the second accommodating duct 512.
  • the first accommodating duct 511 and the second accommodating ducts 512 are disposed in parallel.
  • the first accommodating duct 511 is disposed between the second accommodating ducts 512.
  • the water pipe assembly 53 in this embodiment may include at least one water inlet pipe 531 and a plurality of water outlet pipes 532. At least one end of the water inlet pipe 531 and at least one end of the water outlet pipes 532 extend out of the second accommodating duct 512.
  • the water pipe assembly 53 in the PTC heater for liquid heating 50 may further include a connecting portion 533, the connecting portion 533 is provided with a water flow duct, the connecting portion 533 is connected to a second end of the water inlet pipe 531 and a second end of each water outlet pipe 532 respectively, and the water flow duct is in communication with the water inlet pipe 531 and the water outlet duct 532.
  • Seals 534 are disposed both between an outer surface of the second end of the water inlet pipe 531 and an inner surface of the water flow duct of the connecting portion 533, and between an end face of the connecting portion 533 and an end face of the heat conductor 51.
  • the PTC heater for liquid heating 50 may further include a water inlet portion 54, and the water inlet portion 54 is provided with a water inlet duct 541.
  • the water inlet portion 54 is connected to a first end of the water inlet pipe 531, and the water inlet duct 541 is in communication with the water inlet pipe 531.
  • the first end of the water inlet pipe 531 is disposed in the water inlet duct 541 of the water inlet portion 54, such that the water inlet portion 54 is connected to the first end of the heat conductor 51.
  • Seals 56 are disposed both between an outer surface of the first end of the water inlet pipe 531 and an inner surface of the water inlet duct 541 of the water inlet portion 54, and between an end face of the water inlet portion 54 and an end face of the first end of the heat conductor 51.
  • the PTC heater for liquid heating 50 may further include a water outlet portion 55, and the water outlet portion 55 is provided with a water outlet duct 551, wherein the water outlet portion 55 is connected to the first end of the water inlet pipe 532, and the water outlet duct 551 of the water outlet portion 55 is in communication with the water outlet pipe 532.
  • the first end of the water outlet pipe 532 is disposed in the water outlet duct 551 of the water outlet portion 55, such that the water outlet portion 55 is connected to the first end of the heat conductor 51.
  • Seals 56 are disposed both between an outer surface of the first end of the water outlet pipe 532 and an inner surface of the water outlet duct 551 of the water outlet portion 55, and between an end face of the water outlet portion 55 and the end face of the first end of the heat conductor 51.
  • both the water inlet portion 54 and the water outlet portion 55 may be integrally formed.
  • the material of the heat conductor 51 in this embodiment may preferably be an aluminum alloy.
  • the material of the water pipe assembly 53 may preferably be a corrosion-resistant heat-conducting material, such as one of stainless steel, stainless iron or copper.
  • the PTC heater for liquid heating can include the heat conductor having one first accommodating duct arranged in one side, and one second accommodating duct arrange in another side for holding the PTC heating assembly and water pipe assembly, respectively.
  • the heat conductor may be a type of configuration having a plurality of first accommodating ducts and second accommodating ducts forming a plurality of holding chambers the PTC heating assemblies and water pipe assemblies are arranged inside the holding chambers.
  • the PTC liquid heating tube of the present disclosure can achieve a better corrosion resistance, greatly extend the service life of the PTC heater and prevent electric leakage accidents. Furthermore, the PTC heater for liquid heating of the present disclosure has a simple structure and low costs, and is convenient to assemble, especially in the replacement of the water pipes for maintaining the PTC heater in future.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Thermal Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Architecture (AREA)
  • Sustainable Development (AREA)
  • Structural Engineering (AREA)
  • Civil Engineering (AREA)
  • Water Supply & Treatment (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Air-Conditioning For Vehicles (AREA)
  • Resistance Heating (AREA)
  • Instantaneous Water Boilers, Portable Hot-Water Supply Apparatuses, And Control Of Portable Hot-Water Supply Apparatuses (AREA)
EP17158317.2A 2016-07-28 2017-02-28 Ptc heater for liquid heating Active EP3276281B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201620804786.7U CN206037391U (zh) 2016-07-28 2016-07-28 Ptc液体加热器

Publications (2)

Publication Number Publication Date
EP3276281A1 EP3276281A1 (en) 2018-01-31
EP3276281B1 true EP3276281B1 (en) 2020-06-03

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EP17158317.2A Active EP3276281B1 (en) 2016-07-28 2017-02-28 Ptc heater for liquid heating

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US (1) US20180031272A1 (zh)
EP (1) EP3276281B1 (zh)
CN (1) CN206037391U (zh)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN204119542U (zh) 2014-09-24 2015-01-21 上海荣威塑胶工业有限公司 一种ptc加热器
US11002465B2 (en) 2014-09-24 2021-05-11 Bestway Inflatables & Materials Corp. PTC heater
US20180274817A1 (en) * 2017-03-23 2018-09-27 Edwards Vacuum Llc Inline fluid heater
CN112514533A (zh) * 2018-09-20 2021-03-16 株式会社京浜 水加热器及其制造方法
CN109631317A (zh) * 2019-01-11 2019-04-16 芜湖艾尔达科技有限责任公司 一种多管串联极速加热装置

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6330395B1 (en) * 1999-12-29 2001-12-11 Chia-Hsiung Wu Heating apparatus with safety sealing

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2804784A1 (de) * 1978-02-04 1979-08-09 Eichenauer Fa Fritz Elektrische widerstandsheizeinrichtung
DE2804818C2 (de) * 1978-02-04 1986-12-11 Fritz Eichenauer GmbH & Co KG, 6744 Kandel Elektrische Heizeinrichtung
DE7926346U1 (de) * 1979-09-17 1979-12-20 Siemens Ag, 1000 Berlin Und 8000 Muenchen Elektrischer durchlauferhitzer
DE2948591A1 (de) * 1979-12-03 1981-06-11 Fa. Fritz Eichenauer, 6744 Kandel Durchlauferhitzer
US20090294545A1 (en) * 2008-06-02 2009-12-03 Chih Chen Slim type automatic temperature controlled water heater
CN204119542U (zh) * 2014-09-24 2015-01-21 上海荣威塑胶工业有限公司 一种ptc加热器
CN204739758U (zh) * 2015-03-24 2015-11-04 上海荣威塑胶工业有限公司 一种ptc加热器

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6330395B1 (en) * 1999-12-29 2001-12-11 Chia-Hsiung Wu Heating apparatus with safety sealing

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Publication number Publication date
US20180031272A1 (en) 2018-02-01
EP3276281A1 (en) 2018-01-31
CN206037391U (zh) 2017-03-22

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