EP3805661A1 - Heating device - Google Patents

Heating device Download PDF

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Publication number
EP3805661A1
EP3805661A1 EP19020561.7A EP19020561A EP3805661A1 EP 3805661 A1 EP3805661 A1 EP 3805661A1 EP 19020561 A EP19020561 A EP 19020561A EP 3805661 A1 EP3805661 A1 EP 3805661A1
Authority
EP
European Patent Office
Prior art keywords
heating
shell
nozzles
cylindrical
heat transfer
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.)
Withdrawn
Application number
EP19020561.7A
Other languages
German (de)
French (fr)
Inventor
Tatiana Dimitriou
Sergei Gorbunov
Baurzhan Karimov
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.)
Individual
Original Assignee
Individual
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Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to EP19020561.7A priority Critical patent/EP3805661A1/en
Publication of EP3805661A1 publication Critical patent/EP3805661A1/en
Withdrawn legal-status Critical Current

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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
    • F24H1/101—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 using electric energy supply
    • F24H1/102—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 using electric energy supply with resistance
    • 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
    • F24H9/0005—Details for water heaters
    • F24H9/001—Guiding means
    • F24H9/0015—Guiding means in water channels
    • 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
    • F24H9/0005—Details for water heaters
    • F24H9/001—Guiding means
    • F24H9/0015—Guiding means in water channels
    • F24H9/0021—Sleeves surrounding heating elements or heating pipes, e.g. pipes filled with heat transfer fluid, for guiding heated liquid
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B3/00—Ohmic-resistance heating
    • H05B3/40—Heating elements having the shape of rods or tubes
    • H05B3/42—Heating elements having the shape of rods or tubes non-flexible
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B3/00—Ohmic-resistance heating
    • H05B3/78—Heating arrangements specially adapted for immersion heating
    • H05B3/82—Fixedly-mounted immersion heaters

Definitions

  • the invention relates to devices for heating liquid heat transfer media and can be used for heating a heating medium in heating systems.
  • the prior art includes a water heating electrode boiler called «Helen» comprising a shell with inlet and outlet nozzles for mounting in a circulation water supply system, communicating with an internal closed space of the boiler shell, and electrodes mounted inside the shell, laterally mounted on the boiler shell and threaded into the pipes, mounted on the side surface of the shell by insulating sleeves, wherein the boiler is provided with an electrode support for heating and at least one intensive heating electrode, included in a common electrical circuit (see patent RU 86275 , class F22B 1/30, publ. 27.08.2009).
  • the prior art also includes a water heating electrode boiler comprising a metal-insulated shell with inlet and outlet nozzles for connection to a water heating system, and an electrode-heating element installed inside the shell along it, which is fixed to the shell by means of a pin, being simultaneously a phase terminal as well as terminals for connecting the neutral wire and the ground wire, having the stud-like shape and located on the shell on the sides of the phase terminal, the heating element is made of a modified graphite, or a cast iron alloy, or a non-magnetic steel stainless alloy, and the pin being a phase terminal is additionally insulated at a distance from the shell to the electrode by means of a build-up made of a high strength rubber (see Patent RU 109834 , class F24H 1/00, publ. 27.10.2011).
  • the prior art includes a water-heating boiler which has a cylindrical shell with a cover forming a closed heating circuit, a heating element installed in the center of the shell and nozzles secured on the shell's wall, at that one of the nozzles is installed tangentially to the shell, wherein the hot water boiler is of double pressure type, and the upper part of the shell is equipped with perforation, above which the casing of the second heating circuit is fixed, inside which the accumulator of the second heating circuit is installed, adjoined by a spiral connection to the first heating circuit, so that the spiral branch pipe is installed coaxially to the heating element, whereas the second heating circuit accumulator and the spiral nozzle are placed in the heat transfer medium of the first heating circuit (see patent RU 2166153 , class F24H 1/00, publ. 27.04.2001).
  • the main disadvantages that the known boilers have in common are their low efficiency due to a large heating cavity used for heating the heat medium; a heating element with a small heating area not corresponding to the large heating cavity, thus requiring a large amount of electrical energy for the heat transfer medium to be heated to a desired temperature and finally, their manufacturing complexity.
  • the invention most closely relates to a heating device for a liquid heat transfer medium, comprising modules, each of which is made in the form of a cylindrical shell with a bottom and inlet and outlet nozzles and is equipped with an electric heater (see patent RU 2301378 , class F24H 1/10, publ. 20.06.2007).
  • the known device uses a three-phase induction heater, consisting basically of a winding on the outer part of the shell.
  • a significant amount of energy is dissipated to the surroundings rather than used for heating of the liquid heat transfer medium, which is irrational, especially if the device is installed in a mechanical room.
  • the engineering problem is solved and the technical result is achieved due to the fact that in the heating device designed for a liquid heat transfer medium containing modules, each of which has a cylindrical shell shape with a bottom as well as inlet and outlet nozzles and is equipped with an electric heater, the latter is designed as a cylindrical cartridge heater and is fixed on the shell's axis by means of a threaded flange forming an annular gap, with its thickness range reaching 0.5 to 5.0 mm, where the cylindrical surface of the cartridge heater is equipped with a helical winding, whereas the nozzles are installed on opposite sides in the upper and lower parts of the shell and are connected to the nozzles of the adjacent module, thus forming a single closed heating space.
  • the drawing shows the proposed six-module heating device in cross-section;
  • SUBSTANCE the proposed heating device consists of universal single-type modules the number of which is determined by the tasks set.
  • Each module comprises an electric cylindrical cartridge heater 1 with a threaded flange 2, installed along the axis of the cylindrical shell 3 forming the circular annular gap 4 with thickness ranging from 0.5 to 5.0 mm with the inner surface of the side wall 5 of the cylindrical shell 3.
  • the indicated circular annular gap 4 thickness corresponds to the maximum heat transfer coefficient for the heat transfer media used nowadays: with a thinner circular annular gap 4, the probability of the heater and inner surface of the side wall 5 of the cylindrical shell 3 to come in contact (usually with thermal conductivity being higher than that of the heat transfer medium) increases drastically, which results in more efficient heating of the cylindrical shell 3 rather than the heat transfer medium.
  • the circular annular gap 4 being thicker, the external flows of the heat transfer medium need more time to warm up and do not contribute to the heating of the room, while continuing to consume the energy for maintaining the circulation.
  • the cylindrical surface of the cylindrical cartridge heater 1 is equipped with helical winding 6 and the screw cavity formed communicates with the inlet and outlet openings of the cylindrical shell 3.
  • the cylindrical shell 3 is closed at one side by the welded bottom 7, and at the other side by means of the threaded flange 2 one-tightly closing it. It not only considerably simplifies the manufacturing process, but also minimizes the number of inevitably heated structural parts.
  • the liquid heat medium enters the heating device through the inlet opening 8 formed by the inlet nozzle 9 in the upper part of the cylindrical shell 3. Passing along the entire circular annular gap 4 of the first module, the heat medium moves towards the outlet nozzle 9 (similar to the inlet nozzle 9) but set in the lower part of the cylindrical shell 3.
  • the outlet nozzle 9 of the first module is connected to the inlet nozzle 9 of the adjacent module to form a single closed heating space.
  • connection arrangement between the modules not only makes it possible to minimize the heat loss to the surrounding space and to accelerate to the utmost the heating of the liquid heat transfer medium, but also applies a universal structure of the modules (i.e., the inlet nozzle turns into the outlet nozzle by means of turning of the module by 180°), thus allowing to assemble the device with any number of them.
  • the heated heat medium is directed to the heating system through the outlet opening 10of the last module.
  • the proposed device operates as follows.
  • the heat transfer medium spinning around in the circuit of heating system enters the heating device through the inlet opening 8. Passing along the closed inter-tube space of the circular annular gap 4, the heat from the cylindrical cartridge heater 1 is heated and discharged through the outlet opening 10 into the circuit of the heating system.
  • Running on cylindrical surface of the cylindrical cartridge heater 1 is provided with the helical winding 6 communicating with the inlet and outlet nozzles 9, the flow reverses its direction and moves at an angle around the cylindrical cartridge heater 1, increasing the stroke length in the hot zone of the circular annular gap 4.
  • the claimed technical solution increases the heating capacity of the device due to an increase of the number of modules rather than power of heaters, allowing to maximize the heating efficiency of the heating medium at a minimum consumption of electric power and simplifying the manufacturing process of the proposed device.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Instantaneous Water Boilers, Portable Hot-Water Supply Apparatuses, And Control Of Portable Hot-Water Supply Apparatuses (AREA)

Abstract

The invention relates to devices for heating liquid heat transfer media intended for heating a heating medium in heating systems. It comprises modules, each of which is made in the form of a cylindrical shell with a bottom and inlet and outlet nozzles and is equipped with an electric heater. The heater is designed as a cylindrical cartridge heater and is fixed on the shell's axis by means of a threaded flange forming an annular gap, with its thickness range reaching 0.5 to 5.0 mm. The circular annular gap on the cylindrical surface of the cartridge heater is equipped with a helical winding. The nozzles are installed on opposite sides in the upper and lower parts of the shell and are connected to the nozzles of the adjacent module, thus forming a single closed heating space. EFFECT: enhanced heating efficiency of the liquid heat transfer medium. 1 drawing.

Description

  • The invention relates to devices for heating liquid heat transfer media and can be used for heating a heating medium in heating systems.
  • The prior art includes a water heating electrode boiler called «Helen» comprising a shell with inlet and outlet nozzles for mounting in a circulation water supply system, communicating with an internal closed space of the boiler shell, and electrodes mounted inside the shell, laterally mounted on the boiler shell and threaded into the pipes, mounted on the side surface of the shell by insulating sleeves, wherein the boiler is provided with an electrode support for heating and at least one intensive heating electrode, included in a common electrical circuit (see patent RU 86275 , class F22B 1/30, publ. 27.08.2009).
  • The prior art also includes a water heating electrode boiler comprising a metal-insulated shell with inlet and outlet nozzles for connection to a water heating system, and an electrode-heating element installed inside the shell along it, which is fixed to the shell by means of a pin, being simultaneously a phase terminal as well as terminals for connecting the neutral wire and the ground wire, having the stud-like shape and located on the shell on the sides of the phase terminal, the heating element is made of a modified graphite, or a cast iron alloy, or a non-magnetic steel stainless alloy, and the pin being a phase terminal is additionally insulated at a distance from the shell to the electrode by means of a build-up made of a high strength rubber (see Patent RU 109834 , class F24H 1/00, publ. 27.10.2011).
  • Further, the prior art includes a water-heating boiler which has a cylindrical shell with a cover forming a closed heating circuit, a heating element installed in the center of the shell and nozzles secured on the shell's wall, at that one of the nozzles is installed tangentially to the shell, wherein the hot water boiler is of double pressure type, and the upper part of the shell is equipped with perforation, above which the casing of the second heating circuit is fixed, inside which the accumulator of the second heating circuit is installed, adjoined by a spiral connection to the first heating circuit, so that the spiral branch pipe is installed coaxially to the heating element, whereas the second heating circuit accumulator and the spiral nozzle are placed in the heat transfer medium of the first heating circuit (see patent RU 2166153 , class F24H 1/00, publ. 27.04.2001).
  • The main disadvantages that the known boilers have in common are their low efficiency due to a large heating cavity used for heating the heat medium; a heating element with a small heating area not corresponding to the large heating cavity, thus requiring a large amount of electrical energy for the heat transfer medium to be heated to a desired temperature and finally, their manufacturing complexity.
  • The invention most closely relates to a heating device for a liquid heat transfer medium, comprising modules, each of which is made in the form of a cylindrical shell with a bottom and inlet and outlet nozzles and is equipped with an electric heater (see patent RU 2301378 , class F24H 1/10, publ. 20.06.2007). The known device uses a three-phase induction heater, consisting basically of a winding on the outer part of the shell. Thus, a significant amount of energy is dissipated to the surroundings rather than used for heating of the liquid heat transfer medium, which is irrational, especially if the device is installed in a mechanical room. In addition, most of the heat medium volume is placed in the non-heated headers combining the modules, which rises the heating inertia and unjustifiably increases the size of the device. The engineering problem is to create a reliable high efficiency heating device which would allow the liquid heat medium to be heated quickly and with a minimum electricity consumption. The effects is an enhanced heating efficiency of liquid heat transfer medium. Thus, the engineering problem is solved and the technical result is achieved due to the fact that in the heating device designed for a liquid heat transfer medium containing modules, each of which has a cylindrical shell shape with a bottom as well as inlet and outlet nozzles and is equipped with an electric heater, the latter is designed as a cylindrical cartridge heater and is fixed on the shell's axis by means of a threaded flange forming an annular gap, with its thickness range reaching 0.5 to 5.0 mm, where the cylindrical surface of the cartridge heater is equipped with a helical winding, whereas the nozzles are installed on opposite sides in the upper and lower parts of the shell and are connected to the nozzles of the adjacent module, thus forming a single closed heating space.
  • The drawing shows the proposed six-module heating device in cross-section;
    SUBSTANCE: the proposed heating device consists of universal single-type modules the number of which is determined by the tasks set. Each module comprises an electric cylindrical cartridge heater 1 with a threaded flange 2, installed along the axis of the cylindrical shell 3 forming the circular annular gap 4 with thickness ranging from 0.5 to 5.0 mm with the inner surface of the side wall 5 of the cylindrical shell 3. The indicated circular annular gap 4 thickness corresponds to the maximum heat transfer coefficient for the heat transfer media used nowadays: with a thinner circular annular gap 4, the probability of the heater and inner surface of the side wall 5 of the cylindrical shell 3 to come in contact (usually with thermal conductivity being higher than that of the heat transfer medium) increases drastically, which results in more efficient heating of the cylindrical shell 3 rather than the heat transfer medium. At the same time, with the circular annular gap 4 being thicker, the external flows of the heat transfer medium need more time to warm up and do not contribute to the heating of the room, while continuing to consume the energy for maintaining the circulation. The cylindrical surface of the cylindrical cartridge heater 1 is equipped with helical winding 6 and the screw cavity formed communicates with the inlet and outlet openings of the cylindrical shell 3. The cylindrical shell 3 is closed at one side by the welded bottom 7, and at the other side by means of the threaded flange 2 one-tightly closing it. It not only considerably simplifies the manufacturing process, but also minimizes the number of inevitably heated structural parts.
  • The liquid heat medium enters the heating device through the inlet opening 8 formed by the inlet nozzle 9 in the upper part of the cylindrical shell 3. Passing along the entire circular annular gap 4 of the first module, the heat medium moves towards the outlet nozzle 9 (similar to the inlet nozzle 9) but set in the lower part of the cylindrical shell 3. The outlet nozzle 9 of the first module is connected to the inlet nozzle 9 of the adjacent module to form a single closed heating space. Such type of connection arrangement between the modules not only makes it possible to minimize the heat loss to the surrounding space and to accelerate to the utmost the heating of the liquid heat transfer medium, but also applies a universal structure of the modules (i.e., the inlet nozzle turns into the outlet nozzle by means of turning of the module by 180°), thus allowing to assemble the device with any number of them. The heated heat medium is directed to the heating system through the outlet opening 10of the last module.
  • The proposed device operates as follows. The heat transfer medium spinning around in the circuit of heating system, enters the heating device through the inlet opening 8. Passing along the closed inter-tube space of the circular annular gap 4, the heat from the cylindrical cartridge heater 1 is heated and discharged through the outlet opening 10 into the circuit of the heating system. Running on cylindrical surface of the cylindrical cartridge heater 1 is provided with the helical winding 6 communicating with the inlet and outlet nozzles 9, the flow reverses its direction and moves at an angle around the cylindrical cartridge heater 1, increasing the stroke length in the hot zone of the circular annular gap 4.
  • Thus, the claimed technical solution increases the heating capacity of the device due to an increase of the number of modules rather than power of heaters, allowing to maximize the heating efficiency of the heating medium at a minimum consumption of electric power and simplifying the manufacturing process of the proposed device.

Claims (1)

  1. The heating device for a liquid heat transfer medium comprising modules, each of which is made in the form of a cylindrical shell with a bottom, inlet and outlet nozzles and is equipped with an electric heater. The difference is that the latter is designed as a cylindrical cartridge heater and is fixed on the shell's axis by means of a threaded flange forming an annular gap, with its thickness range reaching 0.5 to 5.0 mm, where the cylindrical surface of the cartridge heater is equipped with a helical winding, whereas the nozzles are installed on opposite sides in the upper and lower parts of the shell and are connected to the nozzles of the adjacent module, thus forming a single closed heating space
EP19020561.7A 2019-10-08 2019-10-08 Heating device Withdrawn EP3805661A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP19020561.7A EP3805661A1 (en) 2019-10-08 2019-10-08 Heating device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP19020561.7A EP3805661A1 (en) 2019-10-08 2019-10-08 Heating device

Publications (1)

Publication Number Publication Date
EP3805661A1 true EP3805661A1 (en) 2021-04-14

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EP19020561.7A Withdrawn EP3805661A1 (en) 2019-10-08 2019-10-08 Heating device

Country Status (1)

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EP (1) EP3805661A1 (en)

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0894175A (en) * 1994-09-26 1996-04-12 Toa Denpa Kogyo Kk Heating element for liquid
RU2166153C2 (en) 1999-05-25 2001-04-27 Хусаинов Владимир Борисович Hot-water boiler
EP1731849A1 (en) * 2003-12-10 2006-12-13 Matsushita Electric Industrial Co., Ltd. Heat exchanger and cleaning device with the same
JP2007003154A (en) * 2005-06-27 2007-01-11 Rasuko:Kk Thermostat
RU2301378C1 (en) 2005-11-07 2007-06-20 Юрий Викторинович Зверев Inductive heater for liquid
RU86275U1 (en) 2009-05-06 2009-08-27 Евгений Иванович Суконин BOILER ELECTRODE WATER-HEATING "ELEN"
RU109834U1 (en) 2011-03-30 2011-10-27 Андрей Анатольевич Баранов ELECTRODE WATER HEATING BOILER (OPTIONS)
KR20130006003A (en) * 2011-07-08 2013-01-16 주식회사 엑사이엔씨 Apparatus for heating fluid
US20140050466A1 (en) * 2012-08-20 2014-02-20 Borgwarner Beru Systems Gmbh Electric heating device for heating fluids
WO2015082434A1 (en) * 2013-12-05 2015-06-11 Valeo Systemes Thermiques Electrical device for the thermal conditioning of fluid for a motor vehicle, and associated heating and/or air-conditioning appliance

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0894175A (en) * 1994-09-26 1996-04-12 Toa Denpa Kogyo Kk Heating element for liquid
RU2166153C2 (en) 1999-05-25 2001-04-27 Хусаинов Владимир Борисович Hot-water boiler
EP1731849A1 (en) * 2003-12-10 2006-12-13 Matsushita Electric Industrial Co., Ltd. Heat exchanger and cleaning device with the same
JP2007003154A (en) * 2005-06-27 2007-01-11 Rasuko:Kk Thermostat
RU2301378C1 (en) 2005-11-07 2007-06-20 Юрий Викторинович Зверев Inductive heater for liquid
RU86275U1 (en) 2009-05-06 2009-08-27 Евгений Иванович Суконин BOILER ELECTRODE WATER-HEATING "ELEN"
RU109834U1 (en) 2011-03-30 2011-10-27 Андрей Анатольевич Баранов ELECTRODE WATER HEATING BOILER (OPTIONS)
KR20130006003A (en) * 2011-07-08 2013-01-16 주식회사 엑사이엔씨 Apparatus for heating fluid
US20140050466A1 (en) * 2012-08-20 2014-02-20 Borgwarner Beru Systems Gmbh Electric heating device for heating fluids
WO2015082434A1 (en) * 2013-12-05 2015-06-11 Valeo Systemes Thermiques Electrical device for the thermal conditioning of fluid for a motor vehicle, and associated heating and/or air-conditioning appliance

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