CN108006945A - Gas heater - Google Patents
Gas heater Download PDFInfo
- Publication number
- CN108006945A CN108006945A CN201610932256.5A CN201610932256A CN108006945A CN 108006945 A CN108006945 A CN 108006945A CN 201610932256 A CN201610932256 A CN 201610932256A CN 108006945 A CN108006945 A CN 108006945A
- Authority
- CN
- China
- Prior art keywords
- water
- cooling
- wind turbine
- heat
- gas heater
- 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.)
- Pending
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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
- F24H1/145—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 fluid fuel
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J15/00—Arrangements of devices for treating smoke or fumes
- F23J15/06—Arrangements of devices for treating smoke or fumes of coolers
-
- 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
- F24H9/0036—Dispositions against condensation of combustion products
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/30—Technologies for a more efficient combustion or heat usage
Abstract
The invention discloses a kind of gas heater, including heat-exchange system, combustion system, smoke evacuation system and water-cooling circulating system, the combustion system is used to heat the heat-exchange system；The smoke evacuation system is used to discharge the flue gas that the combustion system produces, and the smoke evacuation system includes wind turbine；The water-cooling circulating system is used to carry out water cooling to the wind turbine, and at least a portion of the water-cooling circulating system is connected adjacent to the wind turbine and with the heat-exchange system, and the cooling water in the water-cooling circulating system after wind turbine heat exchange with flowing into the heat-exchange system.Gas heater according to the present invention has the advantages that good heat dissipation effect, cost are low, stability is good, capacity usage ratio is high.
Description
Technical field
The present invention relates to technical field of water heaters, more particularly, to a kind of gas heater.
Background technology
In smoke evacuation, the motor of wind turbine can be heated strong flue type gas water heater of taking out be subject to flue gas, especially in motor
When running at high speed, since the bearing of motor has maximum temperature strict demand, excessive temperature will influence electrical machinery life, therefore must
Must effectively it be radiated to the motor of wind turbine.
At present, generally use air blast cooling mode radiates motor, and wind-cooling heat dissipating mode needs additionally increase to dissipate
Hot-air fan, thus needs to lengthen motor shaft, and smoke heat energy is all discharged, so that not only increase cost, the electricity of lengthening
Arbor also results in thermal energy waste there is also rotational instability factor.
The content of the invention
It is contemplated that at least solve one of technical problem existing in the prior art.For this reason, the present invention proposes a kind of combustion
Gas water heater, the gas heater have the advantages that good heat dissipation effect, cost are low, stability is good, capacity usage ratio is high.
Gas heater according to embodiments of the present invention, including：Heat-exchange system；For being heated to the heat-exchange system
Combustion system；The smoke evacuation system of the flue gas produced for discharging the combustion system, the smoke evacuation system include wind turbine；For
Carry out the water-cooling circulating system of water cooling to the wind turbine, at least a portion of the water-cooling circulating system adjacent to the wind turbine and with
The heat-exchange system is connected, and the cooling water in the water-cooling circulating system after wind turbine heat exchange with flowing into the heat-exchange system.
Gas heater according to embodiments of the present invention, by the way that at least a portion of water-cooling circulating system is set adjacent to wind turbine
Put, and make the cooling water in water-cooling circulating system with flowing into heat-exchange system after wind turbine heat exchange, so as to solve the motor of wind turbine
The problem of temperature is excessive, and cost is low, and stability is good, and capacity usage ratio is high.
In addition, gas heater according to embodiments of the present invention also has technical characteristic additional as follows：
According to some embodiments of the present invention, the heat-exchange system includes：Heat exchanger；Cold water inlet, the cold water into
Water pipe is connected with the water inlet of the heat exchanger and the water-cooling circulating system respectively；Hot water outlet pipe, the hot water outlet pipe
It is connected with the water outlet of the heat exchanger.
Further, the water-cooling circulating system includes circulating cooling water pipe, at least one of the circulating cooling water pipe
Divide the neighbouring wind turbine and the water inlet with the cold water inlet and the heat exchanger is connected respectively.
Alternatively, the circulating cooling water pipe is divided into sequentially connected cooling water inlet segment, cooling section along its length
With preheating water water exit end, the cooling water inlet segment is connected with the cold water inlet, and the cooling section is adjacent to the wind turbine, institute
The water inlet that preheating water water exit end is stated with the heat exchanger is connected.
Alternatively, the circulating cooling water pipe is equipped with the break-make for being used for controlling the cooling water in the circulating cooling water pipe
Control valve.
Advantageously, the control valve is the threeway for the junction for being located at the cold water inlet and the circulating cooling water pipe
Valve.
According to some embodiments of the present invention, the wind turbine includes air dam and the electricity for driving the air dam wind-guiding
Machine, at least a portion of the water-cooling circulating system is adjacent to the motor to carry out water cooling to the motor.
Further, the smoke evacuation system further includes housing, and the housing has a combustion chamber, the heat-exchange system with it is described
Combustion system is respectively provided in the combustion chamber, the air dam and the combustion chamber and has exhanst gas outlet.
In some embodiments of the invention, the air dam and the motor are respectively positioned on the top of the housing and described
Motor is located at the rear of the air dam.
According to some embodiments of the present invention, the gas heater further includes control system, the control system difference
Communicated with the combustion system and the wind turbine.
The additional aspect and advantage of the present invention will be set forth in part in the description, and will partly become from the following description
Obtain substantially, or recognized by the practice of the present invention.
Brief description of the drawings
Fig. 1 is the structure diagram of gas heater according to embodiments of the present invention；
Fig. 2 is the partial left side view of gas heater according to embodiments of the present invention.
Reference numeral：
Gas heater 1,
Heat-exchange system 100, heat exchanger 110, cold water inlet 120, hot water outlet pipe 130,
Combustion system 200,
Smoke evacuation system 300, wind turbine 310, air dam 311, motor 312, exhanst gas outlet 313, housing 320, combustion chamber 321,
Circulating cooling water pipe 410, cooling water inlet segment 411, preheating water water exit end 412.
Embodiment
The embodiment of the present invention is described below in detail, the example of the embodiment is shown in the drawings, wherein from beginning to end
Same or similar label represents same or similar element or has the function of same or like element.Below with reference to attached
The embodiment of figure description is exemplary, and is only used for explaining the present invention, and is not considered as limiting the invention.
In the description of the present invention, it is to be understood that term " length ", " on ", " under ", "front", "rear", " left side ",
The orientation or position relationship of the instruction such as " right side ", " top ", " bottom ", " interior ", " outer " be based on orientation shown in the drawings or position relationship,
Be for only for ease of the description present invention and simplify description, rather than instruction or imply signified device or element must have it is specific
Orientation, with specific azimuth configuration and operation, therefore be not considered as limiting the invention.In addition, term " first ",
" second " is only used for description purpose, and it is not intended that indicating or implying relative importance or imply the technology indicated by indicating
The quantity of feature.Thus, " first " is defined, the feature of " second " can be expressed or implicitly include one or more
This feature.In the description of the present invention, unless otherwise indicated, " multiple " are meant that two or more.
Gas heater 1 according to embodiments of the present invention is described below with reference to Fig. 1 and Fig. 2, which, which has, dissipates
The advantages of thermal effect is good, cost is low, stability is good, capacity usage ratio is high.
As depicted in figs. 1 and 2, gas heater 1 according to embodiments of the present invention, including heat-exchange system 100, combustion system
200th, smoke evacuation system 300 and water-cooling circulating system.
Specifically, combustion system 200 is heated for exchanging hot systems 100.Smoke evacuation system 300, which is used to discharge, to burn
The flue gas that system 200 produces, smoke evacuation system 300 include wind turbine 310.Water-cooling circulating system is used to carry out water cooling, water to wind turbine 310
At least a portion of SAPMAC method system is adjacent to wind turbine 310, and water-cooling circulating system is connected with heat-exchange system 100, Water-cooling circulating system
Cooling water in system flows into heat-exchange system 100 after exchanging heat with wind turbine 310.
Gas heater 1 according to embodiments of the present invention, by by least a portion of water-cooling circulating system adjacent to wind turbine
310 are set, and can carry out water cooling to the motor of wind turbine 310, without extra increase radiator fan, can solve wind turbine
The problem of 310 motor temperature is excessive, cost are low；Also, due to that need not lengthen the motor shaft of motor, performance is more stablized.
In addition, gas heater 1 according to embodiments of the present invention, by making cooling water and wind turbine in water-cooling circulating system
Heat-exchange system 100 is flowed into after 310 heat exchange, the heat of motor can be made full use of to heat cooling water, i.e. make full use of cigarette
Gas thermal energy is preheated to entering the water in heat-exchange system 100, so as to shorten the heating time of gas heater 1, energy utilization
Rate is high.
According to some embodiments of the present invention, as shown in Figure 1, heat-exchange system 100 includes heat exchanger 110, cold water inlet
120 and hot water outlet pipe 130.Cold water inlet 120 is connected with the water inlet and water-cooling circulating system of heat exchanger 110 respectively.Heat
Water outlet pipe 130 is connected with the water outlet of heat exchanger 110.Cold water enters heat exchanger 110 and and heat exchanger by cold water inlet 120
110 carry out heat exchanges, and hot water is from 130 outflow heat exchanger 110 of hot water outlet pipe afterwards.
Further, as depicted in figs. 1 and 2, water-cooling circulating system includes circulating cooling water pipe 410, circulating cooling water pipe
410 at least a portion adjacent to wind turbine 310, and circulating cooling water pipe 410 respectively with cold water inlet 120 and heat exchanger 110
Water inlet is connected.Thus, the cooled water diversion in cold water inlet 120 is to circulating cooling water pipe 410, in circulating cooling water pipe 410
Cooling water flow through wind turbine 310 and exchange heat with wind turbine 310, the cooling water after heat exchange enters heat exchanger 110, in this way, utilizing cold water
Wind turbine 310 is cooled down, meanwhile, cold water is heated under the action of wind turbine 310, realizes the preheating to cold water.
It is appreciated that in the description of the present application, " at least a portion " includes " part " and " whole " two kinds of situations, water cooling
At least a portion of the circulatory system refers to that water-cooling circulating system part is set adjacent to wind turbine 310, alternatively, water adjacent to wind turbine 310
SAPMAC method system is all set adjacent to wind turbine 310；At least a portion of circulating cooling water pipe 410 refers to following adjacent to wind turbine 310
410 part of ring cooling water pipe is set adjacent to wind turbine 310, alternatively, circulating cooling water pipe 410 is all set adjacent to wind turbine 310.
Alternatively, as shown in Figure 1, the length direction of circulating cooling water pipe 410 along circulating cooling water pipe 410 is divided into connects successively
Cooling water inlet segment 411, cooling section (not shown) and the preheating water water exit end 412 connect, cooling water inlet segment 411 and cold water
Water inlet pipe 120 is connected, and cooling section is connected adjacent to wind turbine 310, preheating water water exit end 412 with the water inlet of heat exchanger 110.In this way,
Cold water in cold water inlet 120 enters cooling section by cooling water inlet segment 411, and 310 postcooling water of cooling blower absorbs wind turbine
310 heat is changed into preheating water, and preheating water is by 412 inflow heat exchanger 110 of preheating water water exit end, so as to fulfill to wind turbine 310
Water cooling and the preheating to cold water.
Alternatively, control valve can be equipped with circulating cooling water pipe 410, with the cooling in control loop cooling water pipe 410
The break-make of water, so as to selectively carry out water cooling to wind turbine 310, i.e. control valve controls when the temperature of wind turbine 310 is higher
Cooling water in circulating cooling water pipe 410 flows to wind turbine 310, the temperature of wind turbine 310 it is relatively low (for example, winter environment temperature compared with
It is low) when, control valve disconnects the cooling water in circulating cooling water pipe 410, ensures the temperature of wind turbine 310.
Advantageously, control valve is the triple valve for the junction for being located at cold water inlet 120 and circulating cooling water pipe 410, from
And can realize the timing break-make to the cooling water in circulating cooling water pipe 410, control is more convenient.
According to some embodiments of the present invention, as shown in Fig. 2, wind turbine 310 includes air dam 311 and for driving air dam
The motor 312 of 311 wind-guidings, at least a portion of water-cooling circulating system is adjacent to motor 312, so as to guide cold water to flow through motor 312
The higher position of temperature, realize the water cooling to motor 312, solve the problems, such as that the temperature of motor 312 is excessive.
Further, as shown in Figure 1, smoke evacuation system 300 further includes housing 320, housing 320 has combustion chamber 321, heat exchange
System 100 is respectively provided in combustion chamber 321 with combustion system 200, and air dam 311 is connected with combustion chamber 321, and air dam 311
With exhanst gas outlet 313.In this way, motor 312 drives air dam 311, and the flue gas in 311 extracting combustion room 321 of air dam, flue gas
Combustion chamber 321 is finally discharged by the exhanst gas outlet 313 of air dam 311.
In some embodiments of the invention, as depicted in figs. 1 and 2, air dam 311 and motor 312 are respectively positioned on housing 320
Top, and motor 312 is located at the rear of air dam 311.Thus, it is not only easy for installation, but also easy to which flue gas is all discharged
Combustion chamber 321, smoke discharging effect are good.
According to some embodiments of the present invention, gas heater 1 further includes control system, and control system is respectively with burning
System 200 and wind turbine 310 communicate, consequently facilitating the working condition of control gas heater 1, more convenient to use.
Below with reference to the accompanying drawings the gas heater 1 of a specific embodiment according to the present invention is described in detail, is worth understanding
, simply exemplary illustration described below, and be not considered as limiting the invention.
As depicted in figs. 1 and 2, gas heater 1 according to embodiments of the present invention, including heat-exchange system 100, combustion system
200th, smoke evacuation system 300 and water-cooling circulating system.
Specifically, heat-exchange system 100 includes heat exchanger 110, cold water inlet 120 and hot water outlet pipe 130, cold water into
Water pipe 120 is connected with the water inlet of heat exchanger 110, and hot water outlet pipe 130 is connected with the water outlet of heat exchanger 110.Smoke evacuation system
300 include wind turbine 310 and housing 320, and wind turbine 310 includes air dam 311 and the motor 312 for driving 311 wind-guiding of air dam.
Air dam 311 and motor 312 are respectively positioned on the top of housing 320, and motor 312 is located at the rear of air dam 311.Housing 320 has
Combuster 321, heat exchanger 110 and combustion system 200 are respectively provided in combustion chamber 321, and here, hot water outlet pipe 130 can be with
All it is built in combustion chamber 321, the present invention is not particularly limited this.Air dam 311 is connected with combustion chamber 321, and wind-guiding
Portion 311 has exhanst gas outlet 313.
Water-cooling circulating system includes circulating cooling water pipe 410, length of the circulating cooling water pipe 410 along circulating cooling water pipe 410
Degree direction is divided into sequentially connected cooling water inlet segment 411, cooling section (not shown) and preheating water water exit end 412, cools down
Water inlet segment 411 is connected with cold water inlet 120, and cooling water inlet segment 411 and the junction of cold water inlet 120 are equipped with three
Port valve, to realize the timing break-make to the cooling water in circulating cooling water pipe 410.Cooling section is adjacent to wind turbine 310, preheating water water outlet
Section 412 is connected with the water inlet of heat exchanger 110.
Gas heater 1 according to embodiments of the present invention, branch is punished out in the entrance (that is, cold water inlet 120) of cold water
Flow tube road (that is, cooling water inlet segment 411), using cold water as recirculated cooling water, recirculated cooling water enters cooling section, to motor
312 carry out water cooling.Recirculated cooling water after cooling is carried out to motor 312 becomes preheating water, then imports preheating water water exit end 412,
And enter heat exchanger 110, most become hot water after the heating of heat exchanger 110 afterwards, flowed out by hot water outlet pipe 130.Thus, solve
The problem of motor 312 temperature is excessive, good heat dissipation effect, and smoke heat energy is taken full advantage of, when shortening the heating of cold water
Between, capacity usage ratio is high.
Meanwhile gas heater 1 according to embodiments of the present invention, the radiator fan of motor 312 is eliminated, eliminates motor
Spacing between 312 and air dam 311, without lengthening the motor shaft of motor 312, the stability of motor 312 is more preferable, cost
It is lower.
Other of gas heater 1 according to embodiments of the present invention are formed and operated for those of ordinary skill in the art
For be all known, be not detailed herein.
In the description of the present invention, it is necessary to illustrate, unless otherwise clearly defined and limited, term " installation ", " phase
Even ", " connection " should be interpreted broadly, for example, it may be being fixedly connected or being detachably connected, or be integrally connected；Can
To be mechanical connection or be electrically connected；It can be directly connected, can also be indirectly connected by intermediary, Ke Yishi
Connection inside two elements.For the ordinary skill in the art, with concrete condition above-mentioned term can be understood at this
Concrete meaning in invention.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " specific embodiment ", " can
Select embodiment ", the description of " example " or " some examples " etc. means to combine specific features, the knot that the embodiment or example describe
Structure, material or feature are contained at least one embodiment of the present invention or example.In the present specification, to above-mentioned term
Schematic representation may not refer to the same embodiment or example.Moreover, specific features, structure, material or the spy of description
Point can combine in an appropriate manner in any one or more embodiments or example.
Although an embodiment of the present invention has been shown and described, it will be understood by those skilled in the art that：Not
In the case of departing from the principle of the present invention and objective a variety of change, modification, replacement and modification can be carried out to these embodiments, this
The scope of invention is limited by claim and its equivalent.
Claims (10)
- A kind of 1. gas heater, it is characterised in that including：Heat-exchange system；For the combustion system heated to the heat-exchange system；The smoke evacuation system of the flue gas produced for discharging the combustion system, the smoke evacuation system include wind turbine；For carrying out the water-cooling circulating system of water cooling to the wind turbine, at least a portion of the water-cooling circulating system is neighbouring described Wind turbine and be connected with the heat-exchange system, the cooling water in the water-cooling circulating system flowed into after exchanging heat with the wind turbine described in change Hot systems.
- 2. gas heater according to claim 1, it is characterised in that the heat-exchange system includes：Heat exchanger；Cold water inlet, the cold water inlet are connected with the water inlet of the heat exchanger and the water-cooling circulating system respectively；Hot water outlet pipe, the hot water outlet pipe are connected with the water outlet of the heat exchanger.
- 3. gas heater according to claim 2, it is characterised in that the water-cooling circulating system includes recirculated cooling water Pipe, at least a portion of the circulating cooling water pipe adjacent to the wind turbine and respectively with the cold water inlet and the heat exchanger Water inlet be connected.
- 4. gas heater according to claim 3, it is characterised in that the circulating cooling water pipe divides along its length For sequentially connected cooling water inlet segment, cooling section and preheating water water exit end, the cooling water inlet segment is intake with the cold water Pipe is connected, and the cooling section is connected adjacent to the wind turbine, the preheating water water exit end with the water inlet of the heat exchanger.
- 5. gas heater according to claim 3, it is characterised in that the circulating cooling water pipe, which is equipped with, to be used to control The control valve of the break-make of cooling water in the circulating cooling water pipe.
- 6. gas heater according to claim 5, it is characterised in that the control valve is to be located at the cold water inlet With the triple valve of the junction of the circulating cooling water pipe.
- 7. according to the gas heater any one of claim 1-6, it is characterised in that the wind turbine include air dam and For driving the motor of the air dam wind-guiding, at least a portion of the water-cooling circulating system is adjacent to the motor with to described Motor carries out water cooling.
- 8. gas heater according to claim 7, it is characterised in that the smoke evacuation system further includes housing, the shell Body has a combustion chamber, and the heat-exchange system is respectively provided in the combustion chamber with the combustion system, the air dam with it is described Combustion chamber and there is exhanst gas outlet.
- 9. gas heater according to claim 8, it is characterised in that the air dam and the motor are respectively positioned on described The top of housing and the motor are located at the rear of the air dam.
- 10. gas heater according to claim 1, it is characterised in that further include control system, the control system point Do not communicated with the combustion system and the wind turbine.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610932256.5A CN108006945A (en) | 2016-10-31 | 2016-10-31 | Gas heater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610932256.5A CN108006945A (en) | 2016-10-31 | 2016-10-31 | Gas heater |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108006945A true CN108006945A (en) | 2018-05-08 |
Family
ID=62047885
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610932256.5A Pending CN108006945A (en) | 2016-10-31 | 2016-10-31 | Gas heater |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108006945A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4254758A (en) * | 1979-08-17 | 1981-03-10 | Banks George W | Vortex heat reclaiming system |
| CN200952493Y (en) * | 2006-09-21 | 2007-09-26 | 长沙楚天科技有限公司 | Water-cooled hot-air fan |
| CN205090591U (en) * | 2015-09-22 | 2016-03-16 | 中山市思源电器有限公司 | Condensation gas heater is taken out by force to water -cooling full premix formula |
| CN105953406A (en) * | 2016-06-03 | 2016-09-21 | 芜湖美的厨卫电器制造有限公司 | Gas water heater |
| CN206160449U (en) * | 2016-10-31 | 2017-05-10 | 芜湖美的厨卫电器制造有限公司 | Gas water heater |
-
2016
- 2016-10-31 CN CN201610932256.5A patent/CN108006945A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4254758A (en) * | 1979-08-17 | 1981-03-10 | Banks George W | Vortex heat reclaiming system |
| CN200952493Y (en) * | 2006-09-21 | 2007-09-26 | 长沙楚天科技有限公司 | Water-cooled hot-air fan |
| CN205090591U (en) * | 2015-09-22 | 2016-03-16 | 中山市思源电器有限公司 | Condensation gas heater is taken out by force to water -cooling full premix formula |
| CN105953406A (en) * | 2016-06-03 | 2016-09-21 | 芜湖美的厨卫电器制造有限公司 | Gas water heater |
| CN206160449U (en) * | 2016-10-31 | 2017-05-10 | 芜湖美的厨卫电器制造有限公司 | Gas water heater |
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