CN104838209B - The heating pad pipe of boiler and the antifreeze method of hot-water line - Google Patents
The heating pad pipe of boiler and the antifreeze method of hot-water line Download PDFInfo
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- CN104838209B CN104838209B CN201380063772.3A CN201380063772A CN104838209B CN 104838209 B CN104838209 B CN 104838209B CN 201380063772 A CN201380063772 A CN 201380063772A CN 104838209 B CN104838209 B CN 104838209B
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- heating
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- boiler
- pad pipe
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 87
- 238000010438 heat treatment Methods 0.000 title claims abstract description 74
- 230000002528 anti-freeze Effects 0.000 title claims abstract description 34
- 238000000034 method Methods 0.000 title claims abstract description 26
- 239000008236 heating water Substances 0.000 claims abstract description 32
- 238000002485 combustion reaction Methods 0.000 claims abstract description 8
- 230000008014 freezing Effects 0.000 abstract description 21
- 238000007710 freezing Methods 0.000 abstract description 21
- 239000007789 gas Substances 0.000 abstract description 5
- 239000000567 combustion gas Substances 0.000 abstract description 2
- 238000001514 detection method Methods 0.000 description 4
- 239000000446 fuel Substances 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 108010022579 ATP dependent 26S protease Proteins 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
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- 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
- F24H9/20—Arrangement or mounting of control or safety devices
- F24H9/2007—Arrangement or mounting of control or safety devices for water heaters
- F24H9/2035—Arrangement or mounting of control or safety devices for water heaters using fluid fuel
-
- 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
- F24H9/20—Arrangement or mounting of control or safety devices
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
- F24D19/00—Details
- F24D19/0095—Devices for preventing damage by freezing
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
- F24D19/00—Details
- F24D19/10—Arrangement or mounting of control or safety devices
-
- 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
- F24H15/00—Control of fluid heaters
- F24H15/10—Control of fluid heaters characterised by the purpose of the control
- F24H15/136—Defrosting or de-icing; Preventing freezing
-
- 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
- F24H15/00—Control of fluid heaters
- F24H15/20—Control of fluid heaters characterised by control inputs
- F24H15/212—Temperature of the water
- F24H15/219—Temperature of the water after heating
-
- 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
- F24H15/00—Control of fluid heaters
- F24H15/30—Control of fluid heaters characterised by control outputs; characterised by the components to be controlled
- F24H15/305—Control of valves
- F24H15/32—Control of valves of switching valves
-
- 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
- F24H15/00—Control of fluid heaters
- F24H15/30—Control of fluid heaters characterised by control outputs; characterised by the components to be controlled
- F24H15/335—Control of pumps, e.g. on-off control
-
- 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
- F24H15/00—Control of fluid heaters
- F24H15/30—Control of fluid heaters characterised by control outputs; characterised by the components to be controlled
- F24H15/355—Control of heat-generating means in heaters
- F24H15/36—Control of heat-generating means in heaters of burners
Landscapes
- 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)
- Steam Or Hot-Water Central Heating Systems (AREA)
- Heat-Pump Type And Storage Water Heaters (AREA)
Abstract
The present invention relates to the use of the heating water temperature sensor of boiler internal prevents antifreeze method while heating pad pipe freezes by controlling gas fired-boiler that triple valve prevents hot-water line from freezing.The heating pad pipe of boiler and the antifreeze method of hot-water line, comprise the following steps：(a) when being down at a temperature of heating water below antifreeze design temperature set in advance, triple valve (120) is changed to hot-water mode and the combustion process of boiler is performed, and driving cycle pump (140) is so that the step of heating water is circulated in the closed-loop path including circulating pump (140), heating heat exchanger (110), triple valve (120) and hot water supply heat exchanger (130)；(b) when the temperature of heating water rises to more than certain temperature set in advance, triple valve (120) is changed to heating mode and the extinguishing process of boiler is performed, and according to the driving of circulating pump (140) make heating water to heating pad pipe (200) circulate the step of.Thus, in addition to it can prevent heating pad pipe from freezing, additionally it is possible to prevent hot-water line from freezing, thus eliminate winter cause hot water because hot-water line freezes in-convenience in use.In addition, not in order to prevent heating pad pipe and hot-water line from freezing and continuously carrying out the combustion process of boiler, therefore in combustion gas usage amount, big difference is had no compared with existing antifreeze function.
Description
Technical field
The present invention relates to the antifreeze method of the heating pad pipe of boiler and hot-water line, more particularly in the heating using boiler internal
Water temperature sensor prevent while heating pad pipe from freezing by the heating pad pipe that controls boiler that triple valve prevents hot-water line from freezing and
The antifreeze method of hot-water line.
Background technology
As shown in figure 1, general gas fired-boiler makes internal pipeline water forced circulation in heating by circulating pump 140,
The combustion heat of absorption burner 160 in heating heat exchanger 110 and improve temperature, and by the operation of triple valve 120 supplied to supplying
Heating coil 200, so as to indoor heating, and when using hot water, will be in heating by making the internal pipeline water circulation of boiler internal
The heat that heat exchanger 110 absorbs supplies heat exchanger 130 supplied to hot water, the running water flowed into from the mouth of a river from the beginning is absorbed hot water supply
The heat of heat exchanger 130, and the hot water warmed is supplied from hot water outlet.
In above-mentioned boiler, controller 100 has following antifreeze function：When people are outgoing, by heating, coolant-temperature gage is passed
The result of the temperature of the detection internal pipeline water of sensor 150, is down to antifreeze design temperature at a temperature of internal pipeline water is detected
When following, make boiler startup, so that the temperature of internal pipeline water rises and circulated in heating pad pipe 200, then work as temperature
When degree is risen to more than the certain temperature of setting, stop boiler, the antifreeze design temperature is the temperature drop when pipeline water
Make the temperature that boiler automatic start is set when below to specified temp to prevent boiler from freezing.
The low effect of heat insulation of building before the antifreeze function of above-mentioned prior art is considered only pursues the anti-of heating pad pipe
Freeze, but present building is improved with outside effect of heat insulation, therefore the dangerous reduction that heating pad pipe freezes.But,
In cold winter, even if using heat insulating material, hot-water line still often freezes, therefore to hot water using making troubles, so needing
Prevent hot-water line from freezing.
Prior art literature
Patent document
Patent document 1：KR published patent the 10-2004-0037899th
The content of the invention
Technical problem
In view of the above problems, it is an object of the invention to provide a kind of heating water temperature sensor using boiler internal
Prevent while heating pad pipe from freezing by the antifreeze of the heating pad pipe that controls boiler that triple valve prevents hot-water line from freezing and hot-water line
Method.
Technical scheme
To reach the present invention of above-mentioned purpose, including：Controller, is made up of to control boiler one-chip microcomputer
Overall operation；Heated water temperature sensor, and the heating coolant-temperature gage in detection boiler is simultaneously inputted to controller noted above；Heating heat exchange
Device, carries out the heat exchange between the heat energy and heating water of burner supply；Hot water supplies heat exchanger, is run when with hot-water mode
When, carry out the heat exchange between heating water and running water；Circulating pump, makes heating water circulation and promotes heat exchange；And triple valve,
Boiler is converted into by heating mode or hot-water mode according to the control of controller, it is characterised in that controller noted above is in above-mentioned confession
When below the heating water temperature drop that warm water temperature degree sensor is detected to antifreeze temperature set in advance, triple valve is converted to
Hot-water mode, when the coolant-temperature gage that heats reaches stopping burning design temperature set in advance, is incited somebody to action with preventing freezing for hot-water line
Triple valve is converted to heating mode to prevent freezing for heating pad pipe.
The heating pad pipe for the boiler that the present invention is provided and the antifreeze method of hot-water line, comprise the following steps：(a) when heating water
When below temperature drop to antifreeze design temperature set in advance, triple valve is changed to hot-water mode according to the control of controller
And perform the combustion process of boiler, and driving cycle pump so that heating water including circulating pump, heating heat exchanger, triple valve and
The step of being circulated in the closed-loop path of hot water supply heat exchanger；(b) when the temperature of heating water rises to set in advance stop
When only more than burning design temperature, triple valve is changed to heating mode according to the control of controller and the extinguishing of boiler is performed
Journey, and according to the driving of circulating pump make heating water to heating pad pipe circulate the step of.
Here, it is preferred that also comprising the following steps：After having performed extinguishing process after certain time set in advance,
Stop the driving of circulating pump and make the step of operation of boiler stops.
For by the triple valve change to heating mode stopping set in advance burn design temperature preferably including
Above-mentioned circulating pump, heating heat exchanger, triple valve and hot water supply the maximum temperature that can be risen in the closed-loop path of heat exchanger.
Beneficial effect
According to the antifreeze method of the boiler heating pipe of the present invention and hot-water line, in addition to it can prevent heating pad pipe from freezing,
Can also prevent hot-water line from freezing, thus eliminate winter cause hot water because hot-water line freezes in-convenience in use.
In addition, not in order to prevent heating pad pipe and hot-water line from freezing and continuously carrying out the combustion process of boiler, therefore
In combustion gas usage amount, big difference is had no compared with existing antifreeze function.
Brief description of the drawings
Fig. 1 is the schematic configuration diagram for the operation for carrying out general gas fired-boiler.
Fig. 2 is the boiler heating pipe of the present invention and the antifreeze flow chart of hot-water line.
Embodiment
To more fully understand the present invention, below in conjunction with accompanying drawing to a preferred embodiment of the present invention will be described in detail.But
Embodiments of the invention can be deformed into other various forms, and the scope of the present invention is not limited to embodiment described further below.
Embodiments of the invention are provided to more completely illustrate the present invention to those skilled in the art.For purposes of illustration only, attached
Shape of key element etc. may be represented by exaggeration in figure.It should be noted that identical part identical accompanying drawing in the drawings
Mark is represented.In addition, to being possible to bring the published 26S Proteasome Structure and Function obscured to the emphasis of the present invention, no longer going to live in the household of one's in-laws on getting married herein
State.
Below, the preferred embodiment of the antifreeze method of boiler heating pipe and hot-water line of the invention is carried out with reference to accompanying drawing detailed
Describe in detail bright.
Fig. 1 is the schematic configuration diagram for the operation for carrying out general gas fired-boiler.
First, the boiler of the antifreeze method for the heating pad pipe and hot-water line that can utilize boiler of the invention is illustrated with reference to Fig. 1
Composition.
Controller 100 includes one-chip microcomputer to control the overall operation of boiler, by controlling igniter energy
Enough starting troubles, and fired state is detected using flame detection sensor, so as to take termination gas supply etc. when unburned
Security control, and in order to carry out the Optimal Control of boiler, the shape of boiler is inputted from various sensors by sensors inputs
State information, so as to take optimal control according to the running status and external environment condition of boiler.Especially in accordance with the present invention, from heating
Water temperature sensor 150 inputs the heating coolant-temperature gage that it is detected, and is compared with predetermined temperature and controls threeway
Valve 120, thus prevents heating pad pipe and hot-water line from freezing.
In heating heat exchanger 110, obtain heat energy supply from the burner of fired state and carry out heat exchange with heating water,
In hot water supply heat exchanger 130, when boiler is run with hot-water mode, heat exchange is carried out between heating water and running water.
Triple valve 120 is controlled by controller 100, boiler is run with heating mode or hot-water mode.When boiler with
When heating mode is run, in heating driving of the heated heating water of heat exchanger 110 by circulating pump 140, by triple valve 120
Supplied to heating pad pipe 200, and change after water and circulated by expansion slot 180 again.In addition, when boiler is run with hot-water mode
When, heating water is including the closed-loop path of heating heat exchanger 110, triple valve 120, hot water supply heat exchanger 130 and circulating pump 140
It is middle to be circulated.
Fig. 2 is the boiler heating pipe of the present invention and the antifreeze method flow diagram of hot-water line.Below, with reference to Fig. 2 to the present invention
Heating pad pipe and the antifreeze method of hot-water line illustrate.
When boiler is arranged to outer exit pattern by user, controller 100 is first by boiler operatiopn to halted state.That is,
The fuel supplied to burner 160 is blocked, stops burning, and stops the operation of circulating pump 140, so that in boiler
The circulation of pipeline water in water pipe and heating pad pipe 200 keeps halted state.
In this state, controller 100 periodically check heating water temperature sensor 150 detection temperature and with it is pre-
The antifreeze design temperature first set is compared.Here, the pipeline water in antifreeze design temperature set in advance generally preferably pipe
The temperature conditionss that can freeze.
Said temperature comparative result, when the coolant-temperature gage that heats is higher than antifreeze design temperature, continues checking for the coolant-temperature gage that heats, when
When the coolant-temperature gage that heats is less than antifreeze design temperature, triple valve 120 is converted to hot-water mode by controller 100, is supplied to burner 160
Answer fuel and its burning is produced heat, and driving cycle pump 140, heating water is absorbed heat in heating heat exchanger 110, from
And heating coolant-temperature gage is increased, and make heated heating water including circulating pump 140, heating heat exchanger 110, triple valve
120 and hot water supply heat exchanger 130 closed-loop path in circulated.
Now, in hot water supply heat exchanger 130, heat transfer is carried out from heated heating water to hot-water line 210, so that
Prevent hot-water line 210 from freezing.
Afterwards, when heating water reaches stopping burning design temperature set in advance because of the combustion process of boiler, control
Device 100 blocks fuel to perform extinguishing process, and again changes triple valve 120 to heating mode.
Here, it is set in advance stop burning design temperature preferably including above-mentioned circulating pump 140, heating heat exchanger 110,
The maximum temperature that can be risen in the closed-loop path of triple valve 120 and hot water supply heat exchanger 130, described is set in advance
Stopping burning design temperature is used to make the triple valve change to heating mode.
After performing the extinguishing process and changing triple valve 120 to heating mode, boiler does not perform combustion process,
Driving cycle pump 140, makes heated heating water be circulated by heating pad pipe 200, so as to prevent heating pad pipe 200 from freezing
Knot.
Therefore, according to the above method, compared with existing heating pad pipe antifreeze function, using almost equal fuel, not only
It can prevent heating pad pipe from freezing, additionally it is possible to prevent hot-water line from freezing.
Additionally, it is preferred that comprising the following steps：After extinguishing process has been performed after a predetermined time, i.e., by being enough
After the time of the circulation for the heating water for completing to prevent that heating pad pipe from freezing, stop the driving of circulating pump 140 and change boiler
The step of to halted state.
Above-described embodiment is merely to illustrate the heating pad pipe and the antifreeze method of hot-water line of the boiler of the present invention, and should manage
Solving may modify to the present invention for one of ordinary skill in the art, deform or equivalent substitution.Therefore, it is understood that
The invention is not restricted to the form of described above.The present invention real technical protection scope should by appended claims skill
Art thought is determined.In addition, the present invention be understood to include as defined in appended claims spirit of the invention and
All deformations and equipollent and substitute in the range of it.
Description of reference numerals
100：Controller 110：Heat heat exchanger
120：Triple valve 130：Hot water supplies heat exchanger
140：Circulating pump 150：Heat water temperature sensor
160：Burner 170：Pressure fan
180：Expansion slot 190：Hot water temperature sensor
200：Heating pad pipe 210：Hot-water line
Claims (4)
1. a kind of heating pad pipe of boiler and the antifreeze method of hot-water line, it is characterised in that comprise the following steps：
(a) when being down at a temperature of heating water below antifreeze design temperature set in advance, according to the control of controller by three
Port valve is changed to hot-water mode and performs the combustion process of boiler, and driving cycle pump is so that the heating water is including described
Circulating pump, heating heat exchanger, the triple valve and hot water supply the step of being circulated in the closed-loop path of heat exchanger, wherein,
In hot water supply heat exchanger, heat transfer is carried out from the heated heating water to the hot-water line, institute is thus prevented
Hot-water line is stated to freeze；
(b) when the temperature of the heating water rises to more than certain temperature set in advance, according to the control of the controller
The triple valve is changed to heating mode and the extinguishing process of the boiler is performed, and is made according to the driving of the circulating pump
The heating water to the heating pad pipe circulate the step of.
2. the heating pad pipe of boiler according to claim 1 and the antifreeze method of hot-water line, it is characterised in that also including as follows
Step：Stop after certain time set in advance, making the driving of the circulating pump after having performed the extinguishing process
And make the step of operation of the boiler stops.
3. the heating pad pipe of boiler according to claim 1 or 2 and the antifreeze method of hot-water line, it is characterised in that the confession
The temperature of warm water is detected by the heating water temperature sensor being arranged in the boiler.
4. the heating pad pipe of boiler according to claim 1 or 2 and the antifreeze method of hot-water line, it is characterised in that for inciting somebody to action
It is including the circulating pump, the confession that the triple valve, which is changed to the certain temperature set in advance of the heating mode,
The maximum temperature that can be risen in the closed-loop path of warm heat exchanger, the triple valve and hot water supply heat exchanger.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR10-2012-0153945 | 2012-12-26 | ||
| KR1020120153945A KR101436842B1 (en) | 2012-12-26 | 2012-12-26 | Method for preventing freezing of heating pipe and hot-water pipe of boiler |
| PCT/KR2013/008315 WO2014104537A1 (en) | 2012-12-26 | 2013-09-13 | Freeze protection method for heating pipe and hot water pipe of boiler |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104838209A CN104838209A (en) | 2015-08-12 |
| CN104838209B true CN104838209B (en) | 2017-09-19 |
Family
ID=51021553
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201380063772.3A Active CN104838209B (en) | 2012-12-26 | 2013-09-13 | The heating pad pipe of boiler and the antifreeze method of hot-water line |
Country Status (5)
| Country | Link |
|---|---|
| EP (1) | EP2940391B1 (en) |
| KR (1) | KR101436842B1 (en) |
| CN (1) | CN104838209B (en) |
| RU (1) | RU2616580C2 (en) |
| WO (1) | WO2014104537A1 (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101970763B1 (en) * | 2016-06-10 | 2019-05-03 | 주식회사 경동나비엔 | Freezing protection apparatus for air conditioner and the method thereof |
| JP6745039B2 (en) * | 2016-11-25 | 2020-08-26 | 株式会社ノーリツ | Heating water heater |
| RU186997U1 (en) * | 2017-06-01 | 2019-02-12 | Лунгулло Денис Андреевич | HEATING DEVICE |
| CN108302770A (en) * | 2018-01-18 | 2018-07-20 | 广东超人节能厨卫电器有限公司 | A kind of zero cold water fuel gas water heating system automatic freezing-protective method |
| KR102449159B1 (en) | 2018-05-08 | 2022-09-30 | 주식회사 경동나비엔 | Boiler for heating and hot-water supply and control method thereof |
| JP7151205B2 (en) * | 2018-06-21 | 2022-10-12 | 株式会社ノーリツ | Heating heat source machine |
| CN110056857B (en) * | 2019-04-28 | 2020-03-31 | 中国电建集团山东电力建设有限公司 | Anti-freezing method for power station boiler in alpine region |
| KR20210097526A (en) * | 2020-01-30 | 2021-08-09 | 엘지전자 주식회사 | Heat pump and method thereof |
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| CN1239212A (en) * | 1998-06-16 | 1999-12-22 | 陈仁亨 | Household gas heater of water for heating |
| KR20010003836A (en) * | 1999-06-25 | 2001-01-15 | 전주범 | Method preventing freezing-destruction of cold water and warm water tube for gas-boiler |
| CN2828664Y (en) * | 2005-07-21 | 2006-10-18 | 中山华帝燃具股份有限公司 | Antifreezing device for gas water heater |
| CN101711330A (en) * | 2007-05-10 | 2010-05-19 | （株）庆东Navien | Hot water supplying system |
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-
2012
- 2012-12-26 KR KR1020120153945A patent/KR101436842B1/en active IP Right Grant
-
2013
- 2013-09-13 RU RU2015130307A patent/RU2616580C2/en active
- 2013-09-13 CN CN201380063772.3A patent/CN104838209B/en active Active
- 2013-09-13 WO PCT/KR2013/008315 patent/WO2014104537A1/en active Application Filing
- 2013-09-13 EP EP13867829.7A patent/EP2940391B1/en active Active
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1239212A (en) * | 1998-06-16 | 1999-12-22 | 陈仁亨 | Household gas heater of water for heating |
| KR20010003836A (en) * | 1999-06-25 | 2001-01-15 | 전주범 | Method preventing freezing-destruction of cold water and warm water tube for gas-boiler |
| CN2828664Y (en) * | 2005-07-21 | 2006-10-18 | 中山华帝燃具股份有限公司 | Antifreezing device for gas water heater |
| CN101711330A (en) * | 2007-05-10 | 2010-05-19 | （株）庆东Navien | Hot water supplying system |
Also Published As
| Publication number | Publication date |
|---|---|
| KR101436842B1 (en) | 2014-09-11 |
| EP2940391B1 (en) | 2018-05-23 |
| CN104838209A (en) | 2015-08-12 |
| EP2940391A4 (en) | 2016-07-27 |
| RU2616580C2 (en) | 2017-04-17 |
| KR20140085676A (en) | 2014-07-08 |
| WO2014104537A1 (en) | 2014-07-03 |
| RU2015130307A (en) | 2017-01-31 |
| EP2940391A1 (en) | 2015-11-04 |
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