CN206556252U - A kind of condensed type combustion gas water heater of low NOx combustion - Google Patents
A kind of condensed type combustion gas water heater of low NOx combustion Download PDFInfo
- Publication number
- CN206556252U CN206556252U CN201720155472.3U CN201720155472U CN206556252U CN 206556252 U CN206556252 U CN 206556252U CN 201720155472 U CN201720155472 U CN 201720155472U CN 206556252 U CN206556252 U CN 206556252U
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- China
- Prior art keywords
- flue
- water heater
- burner
- condensed type
- intake passage
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- 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
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
Abstract
The utility model discloses a kind of condensed type combustion gas water heater of low NOx combustion, including with burner, heat exchanger, the condensed type combustion gas water heater main body of exhaust fume collecting hood, exhanst gas outlet is provided with above exhaust fume collecting hood, burner is connected with air air intake passage mouthful, blower fan is provided with air intake passage, it is characterized in that, another flue is offered on the exhaust fume collecting hood, condensing heat exchanger is connected with the flue, the outlet of the flue and the air air intake passage mouthful of burner are close, allow part of smoke to enter condensing heat exchanger by flue to release after heat, combustion chamber is re-circulated into be burnt.The utility model effectively using fume afterheat and can reduce the products such as CO, NOx in flue gas.
Description
Technical field
The utility model is related to gas instantaneous water heater technical field, more particularly, to the low of condensed type combustion gas water heater
NOx, CO draining technology.
Background technology
The existing gas heater of prior art in use, has two big shortcomings：
1st, the discharging without strict limitation to NOx because of national standard, the NOx content discharged during China's gas heater burning is general
All over higher, pollution on the environment is larger；
2nd, NOx increases with the rise of ignition temperature, and the ignition temperature of general gas water heater is higher, the NOx of generation compared with
It is many.
Although disclosing the technical scheme using fume afterheat in some patent applications, such as flue gas is further carried out so
Discharge again afterwards, this is the heat mode that condensed type combustion gas water heater common at present utilizes flue gas, but do not utilize cigarette reasonably
CO, NOx are more in the incendivity product such as CO in gas, discharge flue gas.
Utility model content
The purpose of this utility model provides proposition one kind aiming at the deficiencies in the prior art and can effectively utilized more than flue gas
Heat simultaneously reduces the condensed type combustion gas water heater structure of the products such as CO, NOx in flue gas.
In order to reach object above, the utility model patent is adopted the following technical scheme that：
A kind of condensed type combustion gas water heater of low NOx combustion, including with burner, heat exchanger, exhaust fume collecting hood condensation
Exhanst gas outlet is provided with above formula gas heater main body, exhaust fume collecting hood, burner is connected with air air intake passage mouthful, air intake passage
On be provided with blower fan, it is characterised in that another flue is offered on the exhaust fume collecting hood, condensing heat exchanger is connected with the flue,
The outlet of the flue and the air air intake passage mouthful of burner are close, and part of smoke is changed by flue into condensation
Hot device is released after heat, is re-circulated into combustion chamber and is burnt
Compared with prior art, the utility model patent provide a kind of condensed type combustion gas water heater test system have with
Lower beneficial effect：The utility model increases a flue between exhaust fume collecting hood, condensing heat exchanger and blower fan, and blower fan is in volume suck
While can suck part of smoke, circulating flue gas is diluted to primary air so that the oxygen concentration of gaseous mixture is by 21%
18% or so is reduced to, ignition temperature can be effectively reduced, so as to suppress NOx generation, its advantage is specific as follows：1. carry
High fuel gas buring utilization rate；2. Combustion Energy reduces NOx generation well again for flue gas recirculation, reduces the pollution to environment.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model.
Description of reference numerals：1st, exhanst gas outlet 2, exhaust fume collecting hood 3, heat exchanger 4, burner 5, exhaust gases passes (flue)
6th, condensing heat exchanger 7, blower fan 8, fresh air
Embodiment
Below in conjunction with the accompanying drawings and embodiment is further described to the utility model patent.
As shown in figure 1, a kind of condensed type combustion gas water heater of low NOx combustion of the present utility model, including with burner
4th, the condensed type combustion gas water heater main body of heat exchanger 3, exhaust fume collecting hood 2, the top of exhaust fume collecting hood 2 is provided with exhanst gas outlet 1, burner 4
It is connected with to be provided with blower fan 7, the exhaust fume collecting hood on air air intake passage mouthful, air intake passage and offers another exhaust gases passes (cigarette
Road) 5, the flue 5 is arranged on the sidepiece in condensed type combustion gas water heater main body, and condensing heat exchanger 6, condensing heat-exchange are connected with thereon
Device 6 is arranged on the lower end of the flue, close to exit, and the outlet of the flue 5 and the air air intake passage mouthful of burner are close,
Experiment shows：What the outlet of the flue and the air air intake passage mouth of burner were oppositely arranged is optimal for 25-60cm, and this is stylish
The entrance ratio of fresh air and flue gas is optimal；Blower fan is arranged on air air intake passage mouthful end, and this structure makes part of smoke can
Released with entering condensing heat exchanger 6 by flue 5 after heat, be re-circulated into combustion chamber and burnt.
The condensed type combustion gas water heater of said structure can make part of smoke burn again, improve fuel gas buring and utilize
Rate；Ignition temperature is reduced using circulating flue gas simultaneously, NOx and CO generation is reduced.
Above-described is only preferred embodiment of the present utility model, it is noted that for the ordinary skill of this area
For personnel, on the premise of the utility model creation design is not departed from, various modifications and improvements can be made, these all belong to
In protection domain of the present utility model.
Claims (4)
1. a kind of condensed type combustion gas water heater of low NOx combustion, including with burner, heat exchanger, exhaust fume collecting hood condensing
Exhanst gas outlet is provided with above gas heater main body, exhaust fume collecting hood, burner is connected with air air intake passage mouthful, air intake passage
It is provided with blower fan, it is characterised in that another flue is offered on the exhaust fume collecting hood, condensing heat exchanger is connected with the flue, should
The outlet of flue and the air air intake passage mouthful of burner are close, and part of smoke is entered condensing heat-exchange by flue
Device is released after heat, is re-circulated into combustion chamber and is burnt.
2. the condensed type combustion gas water heater of low NOx combustion according to claim 1, it is characterised in that the flue is set
In condensed type combustion gas water heater body side.
3. the condensed type combustion gas water heater of low NOx combustion according to claim 1 or 2, it is characterised in that the condensation is changed
Hot device is arranged on the lower end of the flue, close to exit；The outlet of the flue and the air air intake passage mouthful of burner are close.
4. the condensed type combustion gas water heater of low NOx combustion according to claim 3, it is characterised in that the outlet of the flue
With the air air intake passage mouth of burner be oppositely arranged for 25-60cm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720155472.3U CN206556252U (en) | 2017-02-21 | 2017-02-21 | A kind of condensed type combustion gas water heater of low NOx combustion |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720155472.3U CN206556252U (en) | 2017-02-21 | 2017-02-21 | A kind of condensed type combustion gas water heater of low NOx combustion |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206556252U true CN206556252U (en) | 2017-10-13 |
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ID=60360096
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720155472.3U Active CN206556252U (en) | 2017-02-21 | 2017-02-21 | A kind of condensed type combustion gas water heater of low NOx combustion |
Country Status (1)
| Country | Link |
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| CN (1) | CN206556252U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106642693A (en) * | 2017-02-21 | 2017-05-10 | 广东万家乐燃气具有限公司 | Condensation type gas water heater achieving low-NOx combustion |
-
2017
- 2017-02-21 CN CN201720155472.3U patent/CN206556252U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106642693A (en) * | 2017-02-21 | 2017-05-10 | 广东万家乐燃气具有限公司 | Condensation type gas water heater achieving low-NOx combustion |
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