CN110332696A - Outdoor gas heater - Google Patents
Outdoor gas heater Download PDFInfo
- Publication number
- CN110332696A CN110332696A CN201910692728.8A CN201910692728A CN110332696A CN 110332696 A CN110332696 A CN 110332696A CN 201910692728 A CN201910692728 A CN 201910692728A CN 110332696 A CN110332696 A CN 110332696A
- Authority
- CN
- China
- Prior art keywords
- casing
- installation cavity
- gas heater
- outdoor gas
- heater according
- 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.)
- Granted
Links
- 238000009434 installation Methods 0.000 claims abstract description 39
- 238000002485 combustion reaction Methods 0.000 claims abstract description 30
- 239000007789 gas Substances 0.000 claims abstract description 30
- 239000000779 smoke Substances 0.000 claims abstract description 19
- 238000009792 diffusion process Methods 0.000 claims description 10
- 239000003517 fume Substances 0.000 claims description 10
- 235000019504 cigarettes Nutrition 0.000 claims description 4
- 239000003546 flue gas Substances 0.000 abstract description 37
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 abstract description 36
- 239000000446 fuel Substances 0.000 abstract description 14
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 13
- 239000000126 substance Substances 0.000 abstract description 10
- 238000007664 blowing Methods 0.000 description 5
- UQMRAFJOBWOFNS-UHFFFAOYSA-N butyl 2-(2,4-dichlorophenoxy)acetate Chemical compound CCCCOC(=O)COC1=CC=C(Cl)C=C1Cl UQMRAFJOBWOFNS-UHFFFAOYSA-N 0.000 description 5
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000009969 flowable effect Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000002688 persistence Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 230000002123 temporal effect Effects 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J11/00—Devices for conducting smoke or fumes, e.g. flues
-
- 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
- F24H1/06—Portable or mobile, e.g. collapsible
-
- 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
- F24H1/124—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 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
- F24H9/0005—Details for water heaters
-
- 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
- F24H9/18—Arrangement or mounting of grates or heating means
- F24H9/1809—Arrangement or mounting of grates or heating means for water heaters
- F24H9/1832—Arrangement or mounting of combustion heating means, e.g. grates or burners
- F24H9/1836—Arrangement or mounting of combustion heating means, e.g. grates or burners using fluid fuel
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Housings, Intake/Discharge, And Installation Of Fluid Heaters (AREA)
Abstract
The invention discloses outdoor gas heaters, it includes casing, combustion heat-exchange device, smoke collecting chamber and diffuser casing, installation cavity is provided in casing, the first row port being connected at the top of installation cavity is provided on casing, combustion heat-exchange device, smoke collecting chamber and diffuser casing are arranged in installation cavity, and smoke collecting chamber is located at the top of combustion heat-exchange device.Diffuser casing is connected with the side of smoke collecting chamber, and is provided in installation cavity or on casing lateral wall the second exhaust port being connected with diffuser casing.When first row port blocks, flue gas can flow into diffuser casing, then it is flowed out via second exhaust port, thus, it can be ensured that flue gas can flow, and flue gas is avoided to gather, avoid the flue gas concentration in water heater exceeded, extraneous fresh air can be enable to flow into installation cavity simultaneously, to allow the fuel to full combustion, reduce the generation of harmful substance.
Description
Technical field
The present invention relates to water heating apparatus, in particular to outdoor gas heater.
Background technique
Existing, more and more people like camping outdoors activity, and many people wish to produce when weather cold
Heat water washes one's hands, has a bath, and for this demand designs portable outdoor gas heater.For outdoor gas heat
Hydrophone, top are provided with exhaust outlet, and at work, the generated flue gas that burns is discharged via exhaust outlet.However work as exhaust outlet
When blocking, flue gas can not be normally discharged, and flue gas accumulates in inside water heater, cause the flue gas concentration inside water heater super
Mark.Since flue gas can not flow discharge, so that extraneous fresh air cannot be introduced into and carry out auxiliary combustion in water heater, the combustion of fuel
It burns insufficient, more harmful substance can be generated, the safety of outdoor gas heater is not high.
In addition, can often blow in environment outdoors, will lead to outside air when wind speed is larger can not be successfully inflow hot water
Auxiliary combustion inside device, the fuel combustion in water heater is insufficient, can also generate more harmful substance.
Summary of the invention
It is an object of the invention at least solve one of the technical problems existing in the prior art, outdoor gas hot water is provided
Device can reduce the harmful substance generated when fuel combustion, and avoid the flue gas concentration in water heater exceeded.
The scheme that the present invention uses are as follows: outdoor gas heater comprising
Casing is provided with installation cavity in the casing, be provided on the casing be connected at the top of installation cavity first
Exhaust outlet；
Combustion heat-exchange device is arranged in the installation cavity；
Smoke collecting chamber is arranged in installation cavity and is located at the top of combustion heat-exchange device；
Diffuser casing is arranged in installation cavity and is connected with the side of smoke collecting chamber, in the installation cavity or casing it is outer
The second exhaust port being connected with diffuser casing is provided on wall.
Above scheme has the advantages that, by above structure, when first row port blocks, flue gas can be flowed into
Then diffuser casing is flowed out via second exhaust port, thus, it can be ensured that flue gas can flow, and flue gas is avoided to gather, and avoid water heater
Internal flue gas concentration is exceeded, while extraneous fresh air can be enable to flow into installation cavity, to allow the fuel to full combustion,
Reduce the generation of harmful substance.
Outdoor gas heater according to the present invention, the second exhaust port are connected with the bottom of diffuser casing.
Outdoor gas heater according to the present invention is provided with exhaust fume collecting hood, the smoke collecting chamber position in the installation cavity
In in the exhaust fume collecting hood.
Outdoor gas heater according to the present invention, the side of the exhaust fume collecting hood are provided with diffusion shell, the diffusion
Room is located in the diffusion shell.
Outdoor gas heater according to the present invention, opposite two sides are provided with described first on the casing
Exhaust outlet.
Outdoor gas heater according to the present invention is provided with wind shielding structure, the gear at the top of the installation cavity
Wind structure includes mounting plate and baffle, and the mounting plate is rotatablely arranged in installation cavity, and the two sides of the mounting plate are all provided with
It is equipped with the baffle, the baffle tilts down.
Outdoor gas heater according to the present invention, opposite two sides are each provided with the first air inlet on the casing
Mouthful, the combustion heat-exchange device is located between the first air inlet of casing two sides.
Outdoor gas heater according to the present invention, the bottom surface of the casing be provided with the second air inlet and downwards
The first baffle plate extended.
The bottom of outdoor gas heater according to the present invention, first baffle plate is provided with leading for lateral arrangement
Plate, the two sides of the guide plate are respectively arranged with the second baffle plate extended downwardly, are staggered before and after the second baffle plate of guide plate two sides.
Detailed description of the invention
The present invention is further explained with reference to the accompanying drawings and examples；
Fig. 1 is the structure chart of the embodiment of the present invention；
Fig. 2 is the exploded view of the embodiment of the present invention；
Fig. 3 is the cross-sectional view of the embodiment of the present invention；
Fig. 4 is the schematic diagram of wind shielding structure in the embodiment of the present invention；
Fig. 5 is the structure diagram of the embodiment of the present invention.
Specific embodiment
This part will be described in specific embodiments of the present invention, and the preferred embodiments of the invention is shown in the accompanying drawings, attached
The effect of figure be with figure remark additionally book word segment description, enable a person to intuitively, visually understand of the invention
Each technical characteristic and overall technical architecture, but it should not be understood as limiting the scope of the invention.
In the description of the present invention, it is to be understood that, be related to orientation description, for example, above and below, front, rear, left and right etc.
The orientation or positional relationship of instruction is to be based on the orientation or positional relationship shown in the drawings, and is merely for convenience of the description present invention and letter
Change description, rather than the device or element of indication or suggestion meaning must have a particular orientation, with specific orientation construct and
Operation, therefore be not considered as limiting the invention.
In the description of the present invention, several to be meant that one or more, it is multiple to be meant that two or more, be greater than,
Be less than, more than etc. be interpreted as not including this number, it is above, following, within etc. be interpreted as including this number.If there is being described to first,
Second is only intended to for the purpose of distinguishing technical characteristic, is not understood to indicate or imply relative importance or implicitly indicates institute
The quantity of the technical characteristic of instruction or the precedence relationship for implicitly indicating indicated technical characteristic.
In description of the invention, unless otherwise restricted clearly, the words such as setting, installation, connection be shall be understood in a broad sense, institute
Above-mentioned word in the present invention specific can rationally be determined with the particular content of combination technology scheme by belonging to technical field technical staff
Meaning.
Referring to figs. 1 to Fig. 5, outdoor gas heater of the embodiment of the present invention comprising casing 10, combustion heat-exchange device 20,
Smoke collecting chamber 31 and diffuser casing 41.
It is provided with installation cavity 11 in casing 10, the first row being connected at the top of installation cavity 11 is provided on casing 10
Port 12.In addition, two sides opposite on casing 10 are also respectively provided with the first air inlet 13.Combustion heat-exchange device 20, collection cigarette
Chamber 31 and diffuser casing 41 are arranged in installation cavity 11, and combustion heat-exchange device 20 includes fire row 21 and heat exchanger 22, and fire row 21 is changed
Hot device 22 and smoke collecting chamber 31 are arranged successively from bottom to top.Diffuser casing 41 is connected with the side of smoke collecting chamber 31, and in installation cavity 11
It is inside provided with the second exhaust port 42 being connected with diffuser casing 41, and the second exhaust port 42 is connected with the bottom of diffuser casing 41
It is logical.
When normal work, flue gas flows up through heat exchanger 22 and smoke collecting chamber 31, then flows via first row port 12
Out, since flue gas normally rises, diffuser casing 41 only is flowed into even without flue gas on a small quantity.Meanwhile flue gas rising can reduce
Air pressure in smoke collecting chamber 31 sucks outside air in installation cavity 11.When first row port 12 blocks, flue gas can not
It is flowed out via first row port 12, flue gas is flowable to diffuser casing 41 at this time, and when the flue gas in diffuser casing 41 is more, flue gas can
It is flowed out via second exhaust port 42.Thus, it can be ensured that flue gas can flow, and flue gas is avoided to gather, to avoid the cigarette in water heater
Gas concentration is exceeded, so as to reach relevant authentication test request when carrying out flue gas concentration test.
The flowing of flue gas can enable extraneous fresh air flow into installation cavity 11, to allow the fuel to full combustion, subtract
The generation of few harmful substance, to ensure the content of harmful substances from flue gases lower than relevant criterion.
When water heater has just been lighted a fire and flame just extinguishes, fuel and burn incompletely can generate more nocuousness
Substance, the harmful substance in flue gas is exceeded, and the temperature of flue gas at this time is lower, unobvious, the exceeded cigarette of the trend that flue gas rises
Gas can be in lateral loss to diffuser casing 41, and the exceeded flue gas temporal persistence in part avoids it a large amount of rapid in diffuser casing 41
Spill into the external world.
In addition, gas flow transducer can be arranged at the top of smoke collecting chamber 31, control system is provided on casing 10, air-flow passes
Sensor is electrically connected to the control system.The suction nozzle 15 for installing fuel cylinder, suction nozzle 15 and fire are additionally provided on casing 10
Row 21 is connected by admission line 16, and solenoid valve 17 is provided on admission line 16, and solenoid valve 17 is also electric with control system
Connection.Solenoid valve 17 can control the on-off of admission line 16.When first row port 12 blocks, gas flow transducer is detected
Air velocity become smaller, even zero.When air velocity is lower than a certain setting value, it is dynamic that control system controls solenoid valve 17
Make, the fuel supply of cutting fire row 21, to stop burning.Before stopping burning, the flue gas for generation of burning can flow into diffuser casing
In 41.
Since second exhaust port 42 is located in installation cavity 11, extraneous wind directly blows to second exhaust port when can avoid blowing
42 and inhibit flue gas to flow out.
Referring to Fig. 3, exhaust fume collecting hood 30 is provided in installation cavity 11, smoke collecting chamber 31 is located in the exhaust fume collecting hood 30.In exhaust fume collecting hood
30 side is provided with diffusion shell 40, and diffuser casing 41 is located in diffusion shell 40.Second exhaust port 42 is set on diffusion shell 40.
In certain embodiments, diffusion shell 40 can be connected with exhaust fume collecting hood 30, i.e., diffusion shell 40 and exhaust fume collecting hood 30 are common
Surround diffuser casing 41.
Referring to Fig. 3 and Fig. 4, opposite two sides are provided with first row port 12 on casing 10, on the top of installation cavity 11
Portion is provided with wind shielding structure 50, which includes mounting plate 51 and baffle 52, and mounting plate 51 is rotatablely arranged at peace
It behave affectedly in 11, the two sides of mounting plate 51 are provided with baffle 52, and baffle 52 tilts down.
When blowing, wind can be blown by the first row port 12 of 10 side of casing, the air stream drives wind shielding structure 50 being blown into
Rotation, the first row port 12 of the side can be blocked by wind shielding structure 50, outside air is avoided the occurrence of and pours into smoke collecting chamber 31 and hinder
The case where stagnant flue gas flows out, meanwhile, the flue gas in smoke collecting chamber 31 can be flowed out via the first row port 12 of 10 other side of casing.By
This, is avoided flue gas from gathering, while can make by setting wind shielding structure 50 even if also ensuring that flue gas can be flowed out when blowing
Extraneous fresh air can flow into installation cavity 11, to allow the fuel to full combustion, reduce the generation of harmful substance.
Mounting plate 51 can be an integral structure with baffle 52, and in production, 51 He of mounting plate can be bent to form by a sheet material
Baffle 52 reduces production cost to reduce the quantity of components.
Combustion heat-exchange device 20 is located between the first air inlet 13 of 10 two sides of casing.When wind is to the side of casing 10
When, it is blocked by combustion heat-exchange device 20, can avoid air-flow directly through casing 10, so that the air of a part can be blown into
Auxiliary combustion in installation cavity 11 avoids the occurrence of the insufficient situation of fuel combustion.
Referring to Figures 1 and 2, the first baffle plate for being provided with the second air inlet 14 in the bottom surface of casing 10 and extending downwardly
61, the cross section of the first baffle plate 61 is in cross.When blowing, air-flow passes through from the lower section of casing 10, passes through the first baffling
Plate 61 can hinder the flowing of air, and air-flow is avoided to directly flow through the lower section of casing 10, so that partial air can be via second
Air inlet 14 enters auxiliary combustion in installation cavity 11, avoids the occurrence of the insufficient situation of fuel combustion.
Further, the guide plate 62 of lateral arrangement, the two sides difference of guide plate 62 are provided in the bottom of the first baffle plate 61
It is provided with the second baffle plate 63 extended downwardly, is staggered before and after the second baffle plate 63 of 62 two sides of guide plate.When wind is to casing 10
Side when, the flowing of air can be hindered by the second baffle plate 63, avoids air from directly flowing through the lower section of casing 10, so that part
Air can via the second air inlet 14 enter installation cavity 11 in auxiliary combustion.In addition, the second baffle plate of 62 two sides of guide plate
63 front and backs are staggered, and the air of part can be made to reach the other side of casing 10 around the second baffle plate 63, reach 10 other side of casing
Air flow velocity it is lower, the air of 10 other side of casing is not blown away completely, to ensure to have enough air from casing 10
The other side enter auxiliary combustion in installation cavity 11, avoid the occurrence of the insufficient situation of fuel combustion.
In certain embodiments, the cross section of the first baffle plate 61 can also be in linear type or waveform.
In certain embodiments, second exhaust port 42 can be set on the lateral wall of casing 10.Correspondingly, can be in casing
The blinker extended downwardly is set on 10, so that second exhaust port 42 is downward, airflow direction face second exhaust when avoiding blowing
Mouth 42.
Anti-dumping switch (attached to be not shown in the figure) is additionally provided in casing 10, anti-dumping switch is electrically connected with control system
It connecing, anti-dumping switch can detect the inclination angle of casing 10, when casing 10 is toppled over, supplied by 17 fuel shutoff of solenoid valve,
To stop burning.
The embodiment of the present invention is explained in detail above in conjunction with attached drawing, but the present invention is not limited to the above embodiments,
The technical field those of ordinary skill within the scope of knowledge, can also make without departing from the purpose of the present invention
Various change out.
Claims (9)
1. outdoor gas heater, which is characterized in that including
Casing is provided with installation cavity in the casing, is provided on the casing and the first exhaust that is connected at the top of installation cavity
Mouthful；
Combustion heat-exchange device is arranged in the installation cavity；
Smoke collecting chamber is arranged in installation cavity and is located at the top of combustion heat-exchange device；
Diffuser casing is arranged in installation cavity and is connected with the side of smoke collecting chamber, in the installation cavity or on the outer wall of casing
It is provided with the second exhaust port being connected with diffuser casing.
2. outdoor gas heater according to claim 1, which is characterized in that the bottom of the second exhaust port and diffuser casing
Portion is connected.
3. outdoor gas heater according to claim 1 or 2, which is characterized in that be provided with collection cigarette in the installation cavity
Cover, the smoke collecting chamber are located in the exhaust fume collecting hood.
4. outdoor gas heater according to claim 3, which is characterized in that the side of the exhaust fume collecting hood is provided with diffusion
Cover, the diffuser casing are located in the diffusion shell.
5. outdoor gas heater according to claim 1, which is characterized in that opposite two sides are respectively provided on the casing
There is the first row port.
6. outdoor gas heater according to claim 5, which is characterized in that be provided with and keep out the wind at the top of the installation cavity
Structure, the wind shielding structure include mounting plate and baffle, and the mounting plate is rotatablely arranged in installation cavity, the mounting plate
Two sides be provided with the baffle, the baffle tilts down.
7. outdoor gas heater according to claim 1, which is characterized in that opposite two sides are respectively arranged on the casing
There is the first air inlet, the combustion heat-exchange device is located between the first air inlet of casing two sides.
8. outdoor gas heater according to claim 1 or claim 7, which is characterized in that the bottom surface of the casing is provided with
Two air inlets and the first baffle plate extended downwardly.
9. outdoor gas heater according to claim 8, which is characterized in that the bottom of first baffle plate is provided with
The guide plate of lateral arrangement, the two sides of the guide plate are respectively arranged with the second baffle plate extended downwardly, the second folding of guide plate two sides
It is staggered before and after flowing plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910692728.8A CN110332696B (en) | 2019-07-30 | 2019-07-30 | Outdoor gas water heater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910692728.8A CN110332696B (en) | 2019-07-30 | 2019-07-30 | Outdoor gas water heater |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110332696A true CN110332696A (en) | 2019-10-15 |
| CN110332696B CN110332696B (en) | 2024-02-09 |
Family
ID=68148006
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910692728.8A Active CN110332696B (en) | 2019-07-30 | 2019-07-30 | Outdoor gas water heater |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110332696B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3537431A (en) * | 1969-01-21 | 1970-11-03 | Teledyne Inc | Outdoor gas-burning appliance |
| CN102538214A (en) * | 2012-01-19 | 2012-07-04 | 中山华帝燃具股份有限公司 | Smoke discharge blockage control method and system for gas water heater |
| WO2017193479A1 (en) * | 2016-05-13 | 2017-11-16 | 芜湖美的厨卫电器制造有限公司 | Gas water heater |
| CN207161354U (en) * | 2017-08-31 | 2018-03-30 | 芜湖美的厨卫电器制造有限公司 | Gas heater and the fan assembly for gas heater |
| CN210602218U (en) * | 2019-07-30 | 2020-05-22 | 中山百得厨卫有限公司 | Outdoor gas water heater |
-
2019
- 2019-07-30 CN CN201910692728.8A patent/CN110332696B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3537431A (en) * | 1969-01-21 | 1970-11-03 | Teledyne Inc | Outdoor gas-burning appliance |
| CN102538214A (en) * | 2012-01-19 | 2012-07-04 | 中山华帝燃具股份有限公司 | Smoke discharge blockage control method and system for gas water heater |
| WO2017193479A1 (en) * | 2016-05-13 | 2017-11-16 | 芜湖美的厨卫电器制造有限公司 | Gas water heater |
| CN207161354U (en) * | 2017-08-31 | 2018-03-30 | 芜湖美的厨卫电器制造有限公司 | Gas heater and the fan assembly for gas heater |
| CN210602218U (en) * | 2019-07-30 | 2020-05-22 | 中山百得厨卫有限公司 | Outdoor gas water heater |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110332696B (en) | 2024-02-09 |
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