KR20170077635A - Ceramic heater for hot-water boiler - Google Patents

Ceramic heater for hot-water boiler Download PDF

Info

Publication number
KR20170077635A
KR20170077635A KR1020150187718A KR20150187718A KR20170077635A KR 20170077635 A KR20170077635 A KR 20170077635A KR 1020150187718 A KR1020150187718 A KR 1020150187718A KR 20150187718 A KR20150187718 A KR 20150187718A KR 20170077635 A KR20170077635 A KR 20170077635A
Authority
KR
South Korea
Prior art keywords
ceramic heater
hot water
water
plate
main body
Prior art date
Application number
KR1020150187718A
Other languages
Korean (ko)
Other versions
KR101805789B1 (en
Inventor
김용후
전병권
Original Assignee
김용후
전병권
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
Application filed by 김용후, 전병권 filed Critical 김용후
Priority to KR1020150187718A priority Critical patent/KR101805789B1/en
Publication of KR20170077635A publication Critical patent/KR20170077635A/en
Application granted granted Critical
Publication of KR101805789B1 publication Critical patent/KR101805789B1/en

Links

Images

Classifications

    • HELECTRICITY
    • H05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05BELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B3/00Ohmic-resistance heating
    • H05B3/10Heating elements characterised by the composition or nature of the materials or by the arrangement of the conductor
    • H05B3/12Heating elements characterised by the composition or nature of the materials or by the arrangement of the conductor characterised by the composition or nature of the conductive material
    • H05B3/14Heating elements characterised by the composition or nature of the materials or by the arrangement of the conductor characterised by the composition or nature of the conductive material the material being non-metallic
    • H05B3/141Conductive ceramics, e.g. metal oxides, metal carbides, barium titanate, ferrites, zirconia, vitrous compounds
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24HFLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H1/00Water heaters, e.g. boilers, continuous-flow heaters or water-storage heaters
    • F24H1/10Continuous-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
    • F24H1/101Continuous-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
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24HFLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H1/00Water heaters, e.g. boilers, continuous-flow heaters or water-storage heaters
    • F24H1/10Continuous-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
    • F24H1/12Continuous-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
    • F24H1/121Continuous-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 using electric energy supply
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24HFLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H9/00Details
    • F24H9/18Arrangement or mounting of grates or heating means
    • F24H9/1809Arrangement or mounting of grates or heating means for water heaters
    • F24H9/1818Arrangement or mounting of electric heating means
    • HELECTRICITY
    • H05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05BELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B3/00Ohmic-resistance heating
    • H05B3/02Details
    • HELECTRICITY
    • H05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05BELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B3/00Ohmic-resistance heating
    • H05B3/02Details
    • H05B3/06Heater elements structurally combined with coupling elements or holders
    • HELECTRICITY
    • H05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05BELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B3/00Ohmic-resistance heating
    • H05B3/20Heating elements having extended surface area substantially in a two-dimensional plane, e.g. plate-heater
    • H05B3/22Heating elements having extended surface area substantially in a two-dimensional plane, e.g. plate-heater non-flexible
    • H05B3/26Heating elements having extended surface area substantially in a two-dimensional plane, e.g. plate-heater non-flexible heating conductor mounted on insulating base
    • H05B3/262Heating elements having extended surface area substantially in a two-dimensional plane, e.g. plate-heater non-flexible heating conductor mounted on insulating base the insulating base being an insulated metal plate
    • HELECTRICITY
    • H05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05BELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B3/00Ohmic-resistance heating
    • H05B3/20Heating elements having extended surface area substantially in a two-dimensional plane, e.g. plate-heater
    • H05B3/22Heating elements having extended surface area substantially in a two-dimensional plane, e.g. plate-heater non-flexible
    • H05B3/26Heating elements having extended surface area substantially in a two-dimensional plane, e.g. plate-heater non-flexible heating conductor mounted on insulating base
    • H05B3/265Heating elements having extended surface area substantially in a two-dimensional plane, e.g. plate-heater non-flexible heating conductor mounted on insulating base the insulating base being an inorganic material, e.g. ceramic
    • HELECTRICITY
    • H05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05BELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B3/00Ohmic-resistance heating
    • H05B3/20Heating elements having extended surface area substantially in a two-dimensional plane, e.g. plate-heater
    • H05B3/22Heating elements having extended surface area substantially in a two-dimensional plane, e.g. plate-heater non-flexible
    • H05B3/26Heating elements having extended surface area substantially in a two-dimensional plane, e.g. plate-heater non-flexible heating conductor mounted on insulating base
    • H05B3/267Heating elements having extended surface area substantially in a two-dimensional plane, e.g. plate-heater non-flexible heating conductor mounted on insulating base the insulating base being an organic material, e.g. plastic
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24HFLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H2250/00Electrical heat generating means
    • F24H2250/02Resistances
    • HELECTRICITY
    • H05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05BELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B2203/00Aspects relating to Ohmic resistive heating covered by group H05B3/00
    • H05B2203/021Heaters specially adapted for heating liquids

Landscapes

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

Abstract

It is an object of the present invention to provide a hot water boiler which can heat water with high efficiency even if the use time elapses for a long time and can be easily replaced when the ceramic heater is broken or cut, And to provide a ceramic heater.

Description

{CERAMIC HEATER FOR HOT-WATER BOILER}

The present invention relates to a ceramic heater for a hot water boiler, and more particularly, to a ceramic heater for hot water boiler which can heat water at a high efficiency even after a long time of use, and can easily replace the ceramic heater when the ceramic heater is broken or cut, To a ceramic heater for a hot water boiler which can reduce maintenance and repair costs.

BACKGROUND ART [0002] Conventionally known hot water circulation devices are disclosed in Korean Patent Laid-Open Publication No. 10-2011-0125827 (published on Nov. 22, 2011).

The hot water circulation apparatus disclosed in the publication No. 10-2011-0125827 is installed in a space formed by a lower housing having a plurality of ventilation holes and an upper housing coupled to an upper portion of the lower housing, A water tank for receiving the water injected through the first water inlet formed through the second water inlet and storing the water; a water tank disposed inside the first and second water outlets of the water tank, First and second check valves which are controlled so as to discharge water in the water tank when the pressure is high, and first and second check valves which are respectively connected to first and second water discharge openings formed in the front lower portion of the water tank, , The water introduced from the water tank is heated to a preset temperature, and when the pressure is equal to or higher than the predetermined pressure, the third and fourth hot water First and second heater units for respectively discharging warm water to the first and second hot water pipes through the discharge port and the first connecting pipe, and third and fourth heaters for the third and fourth silicon packings of the first and second heater units, And the outlet of the first connecting pipe is connected to the inlet of the first and second hot water pipes respectively and is connected to the inlet of the first connecting pipe at a predetermined temperature And the inlet of the second connecting pipe is connected to the outlet of the first and second hot water pipes, respectively, and one side of the first and second hot water pipes is connected to the first and second hot water pipes, A pair of joints respectively connected to the other side of the first and second hoses connected to the second introduction port, a water level sensor for detecting the water level of the water stored in the water tank, a first and a second heater unit, And a second hot water piping disposed adjacent to the first and second heater units, And a control unit for controlling the operation of the microcomputer, wherein the first and second check valves are provided on the outer circumferential surface of the opening portion with a constant A cylindrical body having a through hole formed on a bottom surface thereof for discharging water introduced from the water tank to the first and second heater units, When the pressure in the water tank is higher than the pressure in the first and second heater units, the first and second heater units are opened to discharge water into the first and second heater units 60 and 70, A valve body that discharges water and is blocked when the pressure in the water tank is lower than the pressure in the first and second heater units to block the water discharge in the water tank through the through hole; And an air discharge unit which is provided to penetrate the through hole formed in the middle of the outer circumferential surface of the cylindrical body and to discharge the air collected in the cylindrical body into the water tank.

 However, since the conventional hot water circulating apparatus having such a structure uses a PTC heater, the efficiency can not be circulated by 15 to 25% every year as the use time elapses, and when the PTC heater is damaged or broken, There is a problem that the cost is excessively increased. In addition, there is a problem that maintenance and repair cost of the PTC heater requires a large replacement cost.

SUMMARY OF THE INVENTION Accordingly, the present invention has been made to solve the above problems, and it is an object of the present invention to provide a ceramic heater for a hot water boiler which can heat water with high efficiency even after a long time of use.

Another object of the present invention is to provide a ceramic heater for a hot water boiler which can be easily replaced when the ceramic heater is broken or cut.

It is another object of the present invention to provide a ceramic heater for a hot water boiler which can reduce the maintenance cost.

In order to achieve the above object, the ceramic heater for a hot water boiler according to the present invention is characterized in that a C-shaped lower lid is slidably formed along a pair of lower guide grooves formed on both outer lower surfaces of the lower portion, An extrusion main body formed by extruding a metal or non-ferrous metal in which an inverted C-shaped upper lid is slidably formed along a guide groove; And a bimetal and a temperature fuse connected in series to each other in a space between a bottom surface of the extrusion main body and a bottom cover, the ceramic heater comprising:

A thermally conductive grease is coated on the inner surface of the U-shaped concave groove formed along the longitudinal direction on the upper part of the extrusion body so as to heat the water introduced through the inlet of the extrusion body and discharge the water through the water outlet of the extrusion body to the hot water mat A ceramic heater which is installed afterwards and heats the introduced water upon application of power; A plate member installed on the ceramic heater to prevent breakage of the ceramic heater; And a plate spring installed on an upper surface of the plate to elastically press the ceramic heater.

According to the ceramic heater for a hot water boiler according to the present invention, it is possible to heat water with high efficiency even if the use time elapses for a long time, and to easily replace the ceramic heater when the ceramic heater is broken or cut, And the cost can be reduced.

1 is a perspective view schematically showing a state in which a top cover of a ceramic heater for a hot water boiler is partially opened according to an embodiment of the present invention.
2 is a perspective view schematically showing a state in which a top cover of a ceramic heater for a hot water boiler is completely opened according to an embodiment of the present invention.
3 is an exploded perspective view schematically illustrating a ceramic heater for a hot water boiler according to an embodiment of the present invention.

Hereinafter, a ceramic heater for a hot water boiler according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings.

1 to 3, a ceramic heater for a hot water boiler according to an embodiment of the present invention includes a C-shaped lower lid 2 along a pair of lower guide grooves la formed on both lower outer sides thereof An extrusion main body 10 which is slidably formed and is extruded by metal or non-ferrous metal in which an inverted C-shaped upper lid 3 is slidably formed along a pair of upper guide grooves 1b respectively formed on upper and lower outer surfaces; A bimetal (5) and a temperature fuse (7) connected in series to each other in a space between a bottom surface (1c) of the extrusion body (10) and a lower lid (2)

The water introduced into the extruding main body 10 through the inlet 4a is heated to discharge the water through the water outlet 4b of the extruding main body 10 to a hot water mat (Not shown) on the inner surface of a U-shaped concave groove 10a formed along the longitudinal direction and heating the water introduced upon application of a power source; A plate member 30 installed on the ceramic heater 20 to prevent breakage of the ceramic heater 20; And a plate spring 40 installed on the upper surface of the plate 30 to press (press) the ceramic heater 20 elastically.

 In the ceramic heater 20, 14 to 18 conductors are connected in parallel.

It is preferable that the plate 30 is made of any one selected from an iron plate, a non-ferrous metal plate, and a synthetic resin plate.

The leaf spring 40 is formed with a plurality of first leg portions 40a on the inside of the lower edge and a second leg portion 40b to press downward on one side in the longitudinal direction.

In the drawing, reference numeral 50 is a connector, and power is applied to the ceramic heater 20, the bimetal 5, and the temperature fuse 7 through the lead wire 50a of the connector 50.

Next, the operation of the ceramic heater for a hot water boiler according to an embodiment of the present invention will be described with reference to the accompanying drawings.

First, the C-shaped upper lid 3 is pushed to the left or right side along a pair of upper guide grooves 1b formed on both outer sides of the upper side of the extrusion main body 10 extruded with metal or non-ferrous metal, The ceramic heater 20 is installed after applying the thermally conductive grease to the inner surface of the U-shaped concave groove 10a formed on the upper portion of the U-shaped concave groove 10a.

The plate spring 30 is mounted on the upper surface of the ceramic heater 20 and then the plate spring 40 is installed on the upper surface of the plate 30. Then the upper cover 3 is paired with the pair of upper guide grooves 1b, The plate member 30, and the ceramic heater 20 by pushing the plate spring 40, the plate member 30, and the ceramic heater 20, respectively.

Next, one side of the first lead wire c is connected between the other terminal b of the ceramic heater 20 and the other terminal b 'of the connector 50, and the first lead wire c, The other end of the second lead wire d connected to the end of the temperature fuse 7 is connected to one end of the ceramic heater 20 after the other side of the ceramic heater 20 is connected in series to the bimetal 5 and the temperature fuse 7. [ And then the temperature fuse 7 and the bimetal 5 are sequentially turned over the extrusion main body 10 and the lower lid 2 is connected to the terminal a, Is pushed into the space between the bottom surface (1c) of the extrusion body (10) and the lower cover (2).

When the electric power is inputted through the connector 50, the ceramic heater 20 is heated and simultaneously the water introduced into the extrusion body 10 through the inlet 4a is heated, and the extrusion body 10 (Not shown) is formed on the inner surface of the U-shaped concave groove 10a formed along the longitudinal direction at the upper part of the extrusion body 10 so as to discharge the water to the hot water mat (not shown) through the water outlet 4b of the water outlet 4b The heat generated in the ceramic heater 20 is transferred directly to the extrusion body 10 made of aluminum material or non-ferrous metal material to prevent heat loss, so that the thermal efficiency is very high.

Since the plate member 30 provided on the upper portion of the ceramic heater 20 is made of an iron plate, a nonferrous metal plate or a synthetic resin plate and the plate spring 40 is installed on the plate member 30 Not only the first leg portion 40a and the second leg portion 40b formed on the leaf spring 40 apply pressure to the entire upper surface of the ceramic heater 20 uniformly and pressurize the ceramic heater 20 14 to 18 strands of conductors are connected in parallel on the inner surface in parallel, it is not easily disconnected, so that the maintenance / repair cost can be reduced.

Therefore, according to the present invention, water can be heated at a high efficiency even if the use time elapses for a long time, and when the ceramic heater is broken or cut, it can be easily replaced and maintenance / repair cost can be reduced.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments. For example, It is needless to say that the design change can be made in various ways as well as the design change in this way is included in the claims of the present patent.

1a: lower guide groove 1b: upper guide groove
1c: bottom surface 2: bottom cover
3: upper cover 4a: water inlet
4b: water outlet 5: bimetal
7: Temperature fuse 10: Extrusion body
10a: U-shaped concave groove 20: Ceramic heater
30: plate member 40: leaf spring

Claims (3)

A lower C-shaped lid 2 is slidably formed along a pair of lower guide grooves la formed on both lower outer sides of the lower portion and a pair of upper guide grooves 1b formed on both upper outer sides of the upper portion, An extrusion main body 10 extruded with a metallic or non-ferrous metal into which a top cover 3 in a shape of a letter is slidably formed; A bimetal (5) and a temperature fuse (7) connected in series to each other in a space between a bottom surface (1c) of the extrusion body (10) and a lower lid (2)
The water introduced into the extrusion main body 10 through the inlet 4a is heated and discharged to the hot water mat through the water outlet 4b of the extrusion main body 10 in the longitudinal direction A ceramic heater 20 installed after applying a thermally conductive grease on the inner surface of the U-shaped concave groove 10a formed along the U-shaped groove 10a to heat the water introduced when power is applied;
A plate member 30 installed on the ceramic heater 20 to prevent breakage of the ceramic heater 20;
And a leaf spring (40) installed on an upper surface of the plate (30) to elastically press the ceramic heater (20).
The ceramic heater for a hot water boiler according to claim 1, wherein the ceramic heater (20) has 14 to 18 strands of conductors connected in parallel.
The ceramic heater for a hot water boiler according to claim 1, wherein the plate member (30) is one selected from an iron plate, a nonferrous metal plate, and a synthetic resin plate.
KR1020150187718A 2015-12-28 2015-12-28 Ceramic heater for hot-water boiler KR101805789B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020150187718A KR101805789B1 (en) 2015-12-28 2015-12-28 Ceramic heater for hot-water boiler

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020150187718A KR101805789B1 (en) 2015-12-28 2015-12-28 Ceramic heater for hot-water boiler

Publications (2)

Publication Number Publication Date
KR20170077635A true KR20170077635A (en) 2017-07-06
KR101805789B1 KR101805789B1 (en) 2017-12-12

Family

ID=59354127

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1020150187718A KR101805789B1 (en) 2015-12-28 2015-12-28 Ceramic heater for hot-water boiler

Country Status (1)

Country Link
KR (1) KR101805789B1 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20200048702A (en) * 2018-10-30 2020-05-08 강홍구 Device to Prevent Freezing of the Pipe
KR102178573B1 (en) * 2020-09-03 2020-11-13 주식회사 카인드아크코리아 Air Heating System for Camping Vehicle
KR20210158633A (en) * 2020-06-24 2021-12-31 전주대학교 산학협력단 Pipe constant temperature heating device for semiconductor equipment
KR20230019574A (en) * 2021-08-02 2023-02-09 김낭래 Ringer porch storage case with warming function

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4629356B2 (en) * 2004-03-31 2011-02-09 日本特殊陶業株式会社 Manufacturing method of ceramic heater
KR101521128B1 (en) * 2014-01-27 2015-05-20 주식회사 이벨리 fluid heating module and hot water mat using the same

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20200048702A (en) * 2018-10-30 2020-05-08 강홍구 Device to Prevent Freezing of the Pipe
KR20210158633A (en) * 2020-06-24 2021-12-31 전주대학교 산학협력단 Pipe constant temperature heating device for semiconductor equipment
KR102178573B1 (en) * 2020-09-03 2020-11-13 주식회사 카인드아크코리아 Air Heating System for Camping Vehicle
KR20230019574A (en) * 2021-08-02 2023-02-09 김낭래 Ringer porch storage case with warming function

Also Published As

Publication number Publication date
KR101805789B1 (en) 2017-12-12

Similar Documents

Publication Publication Date Title
KR101805789B1 (en) Ceramic heater for hot-water boiler
RU2475173C2 (en) Water heater for machine for preparing hot beverages
CA2367647C (en) Hot runner nozzle
EP3117081B1 (en) Heating device for fluid
US10358764B2 (en) Steam iron comprising a heating body provided with a steam chamber and an ironing surface thermally connected to the heating body
MX2020010921A (en) Electric water heater having bypass.
CN101321905A (en) Steam iron
KR20130047982A (en) Heat rod structure of pre-heater for vehicle
WO2017081225A1 (en) Heating unit and laundry dryer
KR101968614B1 (en) Thermostat for Vehicle
TW201623849A (en) Fluid-controller heating device and fluid control device
EP2690374B1 (en) Resistive structure for the uniform heating of fluids
KR100852342B1 (en) Water heating system comprising a dual tube heater
KR200479937Y1 (en) Sensor device for Heating Apparatus
EP2092863B1 (en) Percolator
KR20090082991A (en) Electric boiler
US9578687B2 (en) Continuous-flow heater
CN104746313B (en) The heater of washing machine and washing machine
RU2455580C2 (en) Radiator with partial load function
KR200413632Y1 (en) Apparatus for circulating hot-water of a meat roaster
KR101302438B1 (en) Hot water circulation apparatus for thermo-mat
KR20180025474A (en) Hot Water Supply Apparatus
US20170121901A1 (en) Ironer chest for an ironing device
KR20160027722A (en) Heater for water purifier
FI124384B (en) Radiator and method of controlling it

Legal Events

Date Code Title Description
A201 Request for examination
E902 Notification of reason for refusal
E701 Decision to grant or registration of patent right