CN104406299A - Heat exchanger and fuel gas hot water device with heat exchanger - Google Patents
Heat exchanger and fuel gas hot water device with heat exchanger Download PDFInfo
- Publication number
- CN104406299A CN104406299A CN201410537826.1A CN201410537826A CN104406299A CN 104406299 A CN104406299 A CN 104406299A CN 201410537826 A CN201410537826 A CN 201410537826A CN 104406299 A CN104406299 A CN 104406299A
- Authority
- CN
- China
- Prior art keywords
- fin
- heat exchanger
- fin section
- fins
- gas
- 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
Links
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
- F24H1/22—Water heaters other than continuous-flow or water-storage heaters, e.g. water heaters for central heating
- F24H1/40—Water heaters other than continuous-flow or water-storage heaters, e.g. water heaters for central heating with water tube or tubes
-
- 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
- F24H9/0026—Guiding means in combustion gas channels
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D21/00—Heat-exchange apparatus not covered by any of the groups F28D1/00 - F28D20/00
- F28D21/0001—Recuperative heat exchangers
- F28D21/0003—Recuperative heat exchangers the heat being recuperated from exhaust gases
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F1/00—Tubular elements; Assemblies of tubular elements
- F28F1/10—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses
- F28F1/12—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element
- F28F1/24—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element and extending transversely
- F28F1/32—Tubular elements and assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with projections, with recesses the means being only outside the tubular element and extending transversely the means having portions engaging further tubular elements
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F2215/00—Fins
- F28F2215/04—Assemblies of fins having different features, e.g. with different fin densities
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Geometry (AREA)
- Details Of Fluid Heaters (AREA)
Abstract
The invention provides a heat exchanger. The heat exchanger comprises a plurality of fins and a hot water suction pipe which extends to penetrate the fins; the fins at least comprise a first fin segment and a second fin segment; and the average density of the fins in the second fin segment is larger than that of the fins in the first fin segment. Due to the fact that the average density of the fins in the first fin segment is reduced, the heat exchange area of the first fin segment is reduced correspondingly, and the minimum working loads of the heat exchanger are reduced to be lower, and condensate water cannot be generated; meanwhile, the average density of the fins in the second fin segment is increased, and the total heat exchange area can be controlled to be still kept consistent with the heat exchange area of an existing heat exchanger. Therefore, when the heat exchanger works with full loads, the heat exchange efficiency cannot be obviously reduced.
Description
Technical field
The invention belongs to field of combustion equipment, be specifically related to a kind of heat exchanger.
The invention still further relates to a kind of gas and hot water equipment using above-mentioned heat exchanger.
Background technology
Gas and hot water equipment generally includes gas heater and gas fired-boiler.Wherein, burner, heat exchanger and pipe-line system is provided with in gas heater.Burner often includes the some fire row sheets be arranged side by side shoulder to shoulder, and each fire row sheet has the hybrid channel of air-gas, within it combustion gas and air can be mixed and pass to the fire hole that is positioned at fire row sheet top with in combustion chamber combustion and producing heat.Heat exchanger is arranged on the top of burner, is generally fin tube type heat exchanger, is namely provided with multiple fin in heat exchanger shell, and a heat-absorbing water pipe is round through these fins.The heat that burner combustion produces absorb by fin, and pass to the water flowed through in heat-absorbing water pipe further, then exported by pipe-line system by the water heated, for drinking, the supply requirement of the domestic hot-water such as bathing.And gas fired-boiler is except can be used for providing domestic hot-water, also can be communicated with being arranged on indoor radiator the function that central-heating is provided.
Existing burner all can be carried out sectional combustion with controlling mostly.Shown in Fig. 6 and Fig. 7 is typical staged burners, and it is made up of some fire rows 81.As shown in Figure 7, when burner operation is in minimum load, as equipment only needs to supply a small amount of hot water, at this moment burner will be only had part fire row 811 to be lighted by control, during the fin section that be positioned at this part fire row 811 above of high-temperature flue gas by heat exchanger that burning produces, heat mainly absorb by the fin of this section and pass to by the water in heat-absorbing water pipe 91.As shown in Figure 6, when burner is operated at full capacity, all fire rows, the part indicated by part and 812 comprised indicated by 811 is all lighted.Usually, designer wishes that the minimum workload of equipment is more low better, so just can have larger live load adjustable range, thus can carry out more meticulous heat regulation, sometimes hot and sometimes cold sensation can not be caused when user's water, and then improve Consumer's Experience.
But in existing heat exchanger, fin 92 is evenly distributed on the direction distributed side by side along fire row, the minimum workload of equipment can be made like this to be set to very low.This is because load is less, if heat exchange area is larger, heat exchange efficiency is certainly higher, but the probability producing condensed water is also larger.When load is lower than a certain critical value, the steam in flue gas will condensation and generate condensed water, and undoubtedly, the appearance of condensed water can corrode heat exchanger, also likely can electronic unit in infringement equipment.Certainly, by reducing the density of fin distribution, as reduced the quantity of unit length inner fin, reduce heat exchange area, thus can make minimum workload near lower while can not produce condensed water, but, total heat exchange area of heat exchanger can be caused so also to diminish thereupon, thus making burner when full-load operation, heat exchange efficiency is corresponding reduction also, and this is obviously that designers are unwilling to see.
Summary of the invention
The object of the present invention is to provide a kind of heat exchanger, it can contribute to the minimum workload reducing the gas and hot water equipment adopting this heat exchanger, can not reduce the heat exchange efficiency of equipment when maximum working load simultaneously.
The present invention also aims to provide a kind of gas and hot water equipment adopting above-mentioned heat exchanger.
One of for achieving the above object, the invention provides a kind of heat exchanger, it heat-absorbing water pipe comprising some fins and extend through some fins; Wherein some fins at least comprise the first fin section and the second fin section, and in the second fin section, the averag density of fin is greater than the averag density of fin in the first fin section.
As a further improvement on the present invention, the fin in the first fin section and the second fin section is all uniformly distributed.
As a further improvement on the present invention, in the second fin section the quantity of fin more than the quantity of fin in the first fin section.
As a further improvement on the present invention, on the bearing of trend of heat-absorbing water pipe, the length of the second fin section is longer than the length of the first fin section.
For realizing another goal of the invention above-mentioned, the present invention also provides a kind of gas and hot water equipment, and it comprises burner and heat exchanger.Burner at least comprises the first combustion parts and the second combustion parts, wherein when burner needs to work in minimum load, and the first combustion parts ignition operation.Heat exchanger comprises some fins and extends through the heat-absorbing water pipe of some fins.Wherein some fins at least comprise the first fin section corresponding to the first combustion parts and the second fin section corresponding to the second combustion parts, and in the second fin section, the averag density of fin is greater than the averag density of fin in the first fin section.
As a further improvement on the present invention, the fin in the first fin section and the second fin section is all uniformly distributed.
As a further improvement on the present invention, the first fin section is positioned at the top of the first combustion parts and is right against the first combustion parts; Second fin section is positioned at the top of the second combustion parts and is right against the second combustion parts.
As a further improvement on the present invention, in the second fin section the quantity of fin more than the quantity of fin in the first fin section.
As a further improvement on the present invention, burner comprises the some fire rows be arranged side by side shoulder to shoulder, and is being parallel on the direction that some fire rows are arranged side by side, and the length of the second fin section is longer than the length of the first fin section.
Compared with prior art, the invention has the beneficial effects as follows: in the first fin section, the averag density of fin reduces, make the also corresponding reduction of its heat exchange area, thus the minimum workload of equipment can be made to drop to lower and condensed water can not be produced; Meanwhile, by increasing the averag density of fin in the second fin section, total heat exchange area can be controlled and be still consistent with existing heat exchanger, thus when equipment is when operating at full capacity, heat exchange efficiency significantly can not reduce.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing for the present invention in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is heat exchanger of the present invention floor map in one embodiment;
Fig. 2 is the operating diagram after the heat exchanger shown in Fig. 1 and burner combination, and wherein burner is in full-power duty;
Fig. 3 and Fig. 2 is similar, and wherein burner is in the duty of minimum load;
Fig. 4 is the floor map of gas and hot water equipment in a detailed description of the invention adopting heat exchanger as shown in Figure 1, and wherein protecgulum is removed to know each parts in display device;
Fig. 5 be heat exchanger of the present invention another embodiment with burner combination after operating diagram, wherein burner is in the duty of minimum load;
Fig. 6 is the operating diagram after heat exchanger of the prior art and burner combination, and wherein burner is in full-power duty;
Fig. 7 and Fig. 6 is similar, and wherein burner is in the duty of minimum load.
Detailed description of the invention
Describe the present invention below with reference to each embodiment shown in the drawings.But these embodiments do not limit the present invention, the structure that those of ordinary skill in the art makes according to these embodiments, method or conversion functionally are all included in protection scope of the present invention.
Next for gas heater, gas and hot water equipment of the present invention is described.Gas heater take fuel gas as fuel, as natural gas, town gas, liquefied gas, biogas etc., carrys out heat hot water to meet the demand of user's domestic water by burning combustible gas.In the embodiment shown in Fig. 4, gas heater 1 comprises shell 50, is housed in the burner 10 in shell 50, heat exchanger 20, fume extractor 30 and blower fan 40.
Shell 50 can be formed by some panel splicings, as front panel, backboard, top board, base plate and pair of side plates.Shell can be installed on body of wall, and its backboard is towards body of wall.
Burner 10 comprises burner shell (sign), is provided with burner unit in it, as the some fire row sheets 11 be arranged side by side shoulder to shoulder.Each fire row sheet can be provided with the hybrid channel of air-gas, the combustion gas of being carried by fuel gas transmission pipeline 53 and primary air mixs and pass to the fire hole that is positioned at fire row sheet top with burning also producing heat in this hybrid channel.Because the structure of fire row sheet and layout are well known to those skilled in the art, so applicant is no longer repeated at this.In present embodiment, burner 10 can carry out sectional combustion.
Coordinate with reference to shown in Fig. 3, burner 10 comprises the first combustion parts 111 and the second combustion parts 112.Wherein the first combustion parts 111 is made up of a small amount of fire row 11, for the ignition when equipment only needs minimum workload.When equipment needs full-load operation, the first combustion parts 111 and all ignition of the second combustion parts 112.The sectional combustion of burner 10 controls to realize by gas ratio valve 13 and gas distributing rod assembly 121,122.Gas ratio valve 13 is communicated with fuel gas transmission pipeline 53, for controlling the gas quantity needed for supplied burner 10.Gas distributing rod assembly comprises can be supplied the first gas distributing rod 121 of combustion gas to the first combustion parts 111 and can supply the second gas distributing rod 122 of combustion gas to the second combustion parts 112.Combustion gas is after the linear scale of gas ratio valve 13 regulates, live load required for equipment enters the first gas distributing rod 121 and/or the second gas distributing rod 122, then entered by injection together after the corresponding combustion parts of burner 10 to primary air and mix, and in combustion chamber combustion.
Heat exchanger 20 is arranged on the top of burner 10.Coordinate with reference to shown in Fig. 1, Fig. 2 and Fig. 3, in present embodiment, heat exchanger 20 adopts fin tube type heat exchanger, be i.e. provided with multiple fin 22, heat-absorbing water pipe 21 round through these fins in the housing (sign) of heat exchanger.One water inlet pipe 51 and an outlet pipe 52 are separately positioned on the upstream and downstream of heat exchanger 20, and are communicated with heat-absorbing water pipe 21, are respectively used to introduce cold water and export hot water.The combustion chamber combustion that air-gas mixture is formed after burner shell and heat exchanger shell splicing, produce heat absorb by fin 22, and pass to the water flowed through in heat-absorbing water pipe 21 further, water after heating passes to the water pipe of domestic water by outlet pipe 52, thus drink for user provides, the domestic water such as bathing.
Fume extractor 30 is arranged on heat exchanger 20, it smoke exhaust pipe comprising petticoat pipe and be arranged on petticoat pipe top.Petticoat pipe has the petticoat pipe housing being buckled in heat exchanger shell top, and the flue gas (comprising the waste gas of carbon monoxide, nitrogen oxide etc.) produced in combustion chamber can be collected by petticoat pipe, and is discharged into outside by smoke exhaust pipe.Blower fan 40 is arranged on below burner 10, for promoting gaseous exchange, to provide the air needed for burning, and impels flue gas to enter in petticoat pipe housing.
As shown in Figure 1 to Figure 3, heat exchanger 20 comprises first fin section 221 and the second fin section 222 corresponding with the first combustion parts 111 of burner 10 and the second combustion parts 112 difference.Wherein the first fin section 221 is positioned at the top of the first combustion parts 111 and is right against the first combustion parts 111, second fin section 222 and is positioned at the top of the second combustion parts 112 and is right against the second combustion parts 112.It is important to note that the averag density of fin is greater than the averag density of fin in the first fin section 221 in the second fin section 222.That is, in the second fin section 222, the distribution of close fin in the first fin section 221 is wanted in the distribution of fin.Compared to heat exchanger of the prior art, a slice or some are extracted in existing heat exchanger out with the fin of the first fin section appropriate section with regard to being equal to, then fill in the part corresponding with the second fin section, thus make the fin closeness in the first fin section 221 thinning thin, and the fin closeness in the second fin section 222 becomes intensive, but total fin number does not change.Because in the first fin section, the averag density of fin reduces, make the also corresponding reduction of its heat exchange area, thus the minimum workload of equipment can be made to drop to lower and condensed water can not be produced; Meanwhile, by increasing the averag density of fin in the second fin section, total heat exchange area can be controlled and be still consistent with existing heat exchanger, thus when equipment is when operating at full capacity, heat exchange efficiency significantly can not reduce.
In preferred embodiment shown in Fig. 1 to Fig. 3, the fin in each fin section 221,222 is all equally distributed, is conducive to like this realizing best heat exchange efficiency.Certainly, in another embodiment as shown in Figure 5, the fin in the first fin section 223 and the second fin section 224 also can be uneven distribution, and this structure can reach the good technique effect of the present invention equally.In addition, in a preferred embodiment, in the second fin section 222 quantity of fin more than the quantity of fin in the first fin section 221; On the bearing of trend of heat-absorbing water pipe 21, be parallel in other words on direction that some fire rows 11 are arranged side by side, the length of the second fin section 222 is longer than the length of the first fin section 221.
It should be noted that, in other embodiments, when the combustion parts of staged burners is more than two, the fin of heat exchanger also relative set can become more multistage; In addition, although be described for gas heater above, if the burner of gas fired-boiler also adopts is staged burners, then heat exchanger of the present invention can be applied to gas fired-boiler equally.
To those skilled in the art, obviously the invention is not restricted to the details of above-mentioned one exemplary embodiment, and when not deviating from spirit of the present invention or essential characteristic, the present invention can be realized in other specific forms.Therefore, no matter from which point, all should embodiment be regarded as exemplary, and be nonrestrictive, scope of the present invention is limited by claims instead of above-mentioned explanation, and all changes be therefore intended in the implication of the equivalency by dropping on claim and scope are included in the present invention.Any Reference numeral in claim should be considered as the claim involved by limiting.
In addition, be to be understood that, although this description is described according to embodiment, but not each embodiment only comprises an independently technical scheme, this narrating mode of description is only for clarity sake, those skilled in the art should by description integrally, and the technical scheme in each embodiment also through appropriately combined, can form other embodiments that it will be appreciated by those skilled in the art that.
Claims (9)
1. a heat exchanger (20), comprising:
Some fins (22);
Heat-absorbing water pipe (21), extends through described some fins; It is characterized in that,
Described some fins at least comprise the first fin section (221) and the second fin section (222), and wherein in the second fin section, the averag density of fin is greater than the averag density of fin in the first fin section.
2. heat exchanger according to claim 1, is characterized in that: the fin in described first fin section and the second fin section is all uniformly distributed.
3. heat exchanger according to claim 1, is characterized in that: in described second fin section, the quantity of fin is more than the quantity of fin in the first fin section.
4. heat exchanger according to claim 1, is characterized in that: on the bearing of trend of described heat-absorbing water pipe, and the length of the second fin section is longer than the length of the first fin section.
5. a gas and hot water equipment (1), comprising:
Burner (10), it at least comprises the first combustion parts (111) and the second combustion parts (112), wherein when burner needs to work in minimum load, the first combustion parts ignition operation; And
Heat exchanger (20), comprises some fins (22) and extends through the heat-absorbing water pipe (21) of described some fins; It is characterized in that,
Described some fins at least comprise the first fin section (221) corresponding to the first combustion parts (111) and the second fin section (222) corresponding to the second combustion parts (112), and wherein in the second fin section, the averag density of fin is greater than the averag density of fin in the first fin section.
6. gas and hot water equipment according to claim 5, is characterized in that: the fin in described first fin section and the second fin section is all uniformly distributed.
7. gas and hot water equipment according to claim 5, is characterized in that: described first fin section is positioned at the top of the first combustion parts and is right against the first combustion parts; Described second fin section is positioned at the top of the second combustion parts and is right against the second combustion parts.
8. gas and hot water equipment according to claim 5, is characterized in that: in described second fin section, the quantity of fin is more than the quantity of fin in the first fin section.
9. gas and hot water equipment according to claim 5, it is characterized in that: described burner comprises the some fire rows (11) be arranged side by side shoulder to shoulder, and be parallel on the direction that described some fire rows are arranged side by side, the length of the second fin section is longer than the length of the first fin section.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410537826.1A CN104406299A (en) | 2014-09-27 | 2014-09-27 | Heat exchanger and fuel gas hot water device with heat exchanger |
| EP15183990.9A EP3002527A1 (en) | 2014-09-27 | 2015-09-07 | Heat exchanger and gas water heating appliance using the same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410537826.1A CN104406299A (en) | 2014-09-27 | 2014-09-27 | Heat exchanger and fuel gas hot water device with heat exchanger |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104406299A true CN104406299A (en) | 2015-03-11 |
Family
ID=52643947
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410537826.1A Pending CN104406299A (en) | 2014-09-27 | 2014-09-27 | Heat exchanger and fuel gas hot water device with heat exchanger |
Country Status (2)
| Country | Link |
|---|---|
| EP (1) | EP3002527A1 (en) |
| CN (1) | CN104406299A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2020094731A (en) * | 2018-12-12 | 2020-06-18 | リンナイ株式会社 | Heat source machine |
| CN112032772A (en) * | 2020-08-10 | 2020-12-04 | 华帝股份有限公司 | Gas source type self-adaptive stove control method and control system |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS56161428U (en) * | 1980-04-30 | 1981-12-01 | ||
| CN2041013U (en) * | 1988-07-06 | 1989-07-12 | 高林生 | Fully-automatic gas-fired water-heater |
| CN2497220Y (en) * | 2001-08-15 | 2002-06-26 | 郑国隆 | Forced exhausting water heater having automatic segment-controlling device |
| CN2830972Y (en) * | 2005-07-15 | 2006-10-25 | 广东万家乐燃气具有限公司 | Mechanical temp regulating fast gas water heater |
| CN101173821A (en) * | 2006-10-30 | 2008-05-07 | 海尔集团公司 | Blue flame sectional air supply gas water heater |
| CN202074674U (en) * | 2011-05-07 | 2011-12-14 | 美的集团有限公司 | Heat exchanger of gas water heater |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BE416338A (en) * | 1924-06-07 | |||
| NL7110630A (en) * | 1971-08-02 | 1973-02-06 | ||
| JPS555883Y2 (en) * | 1977-09-14 | 1980-02-09 | ||
| JPS58193039A (en) * | 1982-05-04 | 1983-11-10 | Osaka Gas Co Ltd | Heater |
| JPS6115044A (en) * | 1984-06-28 | 1986-01-23 | Matsushita Electric Ind Co Ltd | Heat exchanger |
| JPS61143695A (en) * | 1984-12-17 | 1986-07-01 | Toshiba Corp | Cooler |
| JPS63150585A (en) * | 1986-12-15 | 1988-06-23 | Showa Alum Corp | Evaporator |
| US6253839B1 (en) * | 1999-03-10 | 2001-07-03 | Ti Group Automotive Systems Corp. | Refrigeration evaporator |
| US8555820B2 (en) * | 2011-03-25 | 2013-10-15 | Miura Co., Ltd. | Boiler |
| JP5703938B2 (en) * | 2011-04-26 | 2015-04-22 | 株式会社ノーリツ | Exhaust adapter and combustion apparatus equipped with the same |
-
2014
- 2014-09-27 CN CN201410537826.1A patent/CN104406299A/en active Pending
-
2015
- 2015-09-07 EP EP15183990.9A patent/EP3002527A1/en not_active Withdrawn
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS56161428U (en) * | 1980-04-30 | 1981-12-01 | ||
| CN2041013U (en) * | 1988-07-06 | 1989-07-12 | 高林生 | Fully-automatic gas-fired water-heater |
| CN2497220Y (en) * | 2001-08-15 | 2002-06-26 | 郑国隆 | Forced exhausting water heater having automatic segment-controlling device |
| CN2830972Y (en) * | 2005-07-15 | 2006-10-25 | 广东万家乐燃气具有限公司 | Mechanical temp regulating fast gas water heater |
| CN101173821A (en) * | 2006-10-30 | 2008-05-07 | 海尔集团公司 | Blue flame sectional air supply gas water heater |
| CN202074674U (en) * | 2011-05-07 | 2011-12-14 | 美的集团有限公司 | Heat exchanger of gas water heater |
Also Published As
| Publication number | Publication date |
|---|---|
| EP3002527A1 (en) | 2016-04-06 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN202902281U (en) | Back-mixing type multi-level burning low nitric oxide (NOx) gas burner | |
| CN101430102B (en) | Biomass shaping fuel-combustion countryside cooking/bathing/heating integrated apparatus | |
| CN201715820U (en) | Direct combustion type wet electroceramic blank drying system | |
| EP2871414A1 (en) | Low-NOx burner with metal fibers | |
| CN107401829A (en) | A kind of low nitrogen wall-hung condensing gas furnace of sectional type water cooled | |
| CN105793653A (en) | Exchanger for heating boilers | |
| CN205261624U (en) | A cooling flame frontal surface device that can restrain NOx formation in being used for gas boiler furnace | |
| CN206145958U (en) | Low nitrogen emission second grade heat transfer condensing gas heating water heater of piggyback control | |
| CN104406299A (en) | Heat exchanger and fuel gas hot water device with heat exchanger | |
| CN104819570A (en) | Modular hot-water hot-blast stove capable of using both gas fuel and liquid fuel | |
| CN201983253U (en) | Biomass direct-fired boiler | |
| CN203550172U (en) | Wall-hanging stove with air inlet guiding baffle strip | |
| TWI649522B (en) | Water heater having a down fired combustion assembly | |
| CN103363657B (en) | Flameless combustion compact Layout horizontal internal combustion fire pipe water heating boiler | |
| CN105465821A (en) | Cooling flame frontal surface device capable of inhibiting generation of NOx in hearth of gas-fired boiler | |
| CN110030735B (en) | Gas condensing hot air unit | |
| CN201935600U (en) | Heat exchanger and heat treatment heating system | |
| CN105387507B (en) | Energy saving and environment friendly combustion gas condensation module heating unit | |
| CN208349298U (en) | Burner and gas heater | |
| CN203704329U (en) | Energy-saving and environment-friendly household heating boiler | |
| CN206112909U (en) | Metal surface combustion system | |
| CN206959673U (en) | Heat exchanger fin, heat exchanger and heating forced ventilation formula gas furnace | |
| CN101957004B (en) | Stove | |
| CN207094991U (en) | A kind of low nitrogen wall-hung condensing gas furnace of sectional type water cooled | |
| CN211977242U (en) | Gas water heating equipment |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20150311 |