CN111141029A - Chimney anti-downdraft structure and gas water heater - Google Patents
Chimney anti-downdraft structure and gas water heater Download PDFInfo
- Publication number
- CN111141029A CN111141029A CN201811307684.4A CN201811307684A CN111141029A CN 111141029 A CN111141029 A CN 111141029A CN 201811307684 A CN201811307684 A CN 201811307684A CN 111141029 A CN111141029 A CN 111141029A
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- China
- Prior art keywords
- chimney
- fan
- channel
- water heater
- base
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- 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.)
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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
- F24H9/00—Details
- F24H9/0005—Details for water heaters
-
- 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
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23L—SUPPLYING AIR OR NON-COMBUSTIBLE LIQUIDS OR GASES TO COMBUSTION APPARATUS IN GENERAL ; VALVES OR DAMPERS SPECIALLY ADAPTED FOR CONTROLLING AIR SUPPLY OR DRAUGHT IN COMBUSTION APPARATUS; INDUCING DRAUGHT IN COMBUSTION APPARATUS; TOPS FOR CHIMNEYS OR VENTILATING SHAFTS; TERMINALS FOR FLUES
- F23L13/00—Construction of valves or dampers for controlling air supply or draught
- F23L13/02—Construction of valves or dampers for controlling air supply or draught pivoted about a single axis but having not other movement
- F23L13/04—Construction of valves or dampers for controlling air supply or draught pivoted about a single axis but having not other movement with axis perpendicular to face
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23L—SUPPLYING AIR OR NON-COMBUSTIBLE LIQUIDS OR GASES TO COMBUSTION APPARATUS IN GENERAL ; VALVES OR DAMPERS SPECIALLY ADAPTED FOR CONTROLLING AIR SUPPLY OR DRAUGHT IN COMBUSTION APPARATUS; INDUCING DRAUGHT IN COMBUSTION APPARATUS; TOPS FOR CHIMNEYS OR VENTILATING SHAFTS; TERMINALS FOR FLUES
- F23L13/00—Construction of valves or dampers for controlling air supply or draught
- F23L13/06—Construction of valves or dampers for controlling air supply or draught slidable only
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23L—SUPPLYING AIR OR NON-COMBUSTIBLE LIQUIDS OR GASES TO COMBUSTION APPARATUS IN GENERAL ; VALVES OR DAMPERS SPECIALLY ADAPTED FOR CONTROLLING AIR SUPPLY OR DRAUGHT IN COMBUSTION APPARATUS; INDUCING DRAUGHT IN COMBUSTION APPARATUS; TOPS FOR CHIMNEYS OR VENTILATING SHAFTS; TERMINALS FOR FLUES
- F23L17/00—Inducing draught; Tops for chimneys or ventilating shafts; Terminals for flues
- F23L17/005—Inducing draught; Tops for chimneys or ventilating shafts; Terminals for flues using fans
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H9/00—Details
- F24H9/20—Arrangement or mounting of control or safety devices
- F24H9/2007—Arrangement or mounting of control or safety devices for water heaters
- F24H9/2035—Arrangement or mounting of control or safety devices for water heaters using fluid fuel
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Housings, Intake/Discharge, And Installation Of Fluid Heaters (AREA)
Abstract
The invention relates to a chimney anti-downdraft structure and a gas water heater, comprising a fan (2) arranged at the inlet of a chimney (1); the fan is characterized in that the fan (2) comprises a motor (22), at least two blades (23) and a base (24); wherein the motor (22) is in driving connection with the base (24), and the blades (23) are sequentially arranged along the periphery of the base (24) and can rotate relative to the base (24); when no external force acts on each blade, the edges of the adjacent blades (23) are butted or partially overlapped under the action of self gravity to form a baffle plate with a surface capable of stopping the chimney (1). Compared with the prior art, the smoke tube anti-downdraft structure and the gas water heater provided by the invention can match exhaust power according to external wind pressure, so that smoke can be discharged according to set requirements under the conditions of normal wind pressure and wind pressure fluctuation of the outside, and the normal use of the water heater is ensured.
Description
Technical Field
The invention relates to an exhaust device, in particular to a chimney anti-downdraft structure and a gas water heater.
Background
CN201820201983.9 discloses a three-proofing exhaust system, which comprises a fan and is characterized in that an insect-proof net is arranged on the indoor side of the fan, and an upper air pushing pipeline and a diffusion exhaust pipeline are arranged on the outdoor side of the fan; the upward air pushing pipeline is a square pipeline and is provided with a joint side fixedly connected with the fan connecting pipe and a pushing side opposite to the air outlet and forming an included angle of 45 degrees with the joint side, and an open water outlet is reserved at the bottom of the joint side; the diffusion exhaust pipeline links up and fixes on the upper portion of last push-up air pipeline, and the diffusion exhaust pipeline wholly is square pipeline structure, its with form 75 contained angles between the last mouth of last push-up air pipeline.
The utility model discloses a prevent down-draught through install strong exhaust fan in the tuber pipe mouth. But because fan power is unchangeable, consequently prevent wind effect difference to the wind-force of different grades to this fan also rotates always under the condition that need not prevent down the wind, although accelerated the emission of inside flue gas, but the energy consumption is high, and the noise is big.
Disclosure of Invention
The invention aims to solve the technical problem of providing a chimney anti-downdraft structure capable of matching exhaust power according to external wind pressure in the prior art.
The invention aims to solve the technical problem of providing a gas water heater capable of automatically matching exhaust power according to the external wind power in the prior art.
The technical scheme adopted by the invention for solving the technical problems is as follows: a chimney anti-downdraft structure comprises a fan arranged at the inlet of a chimney; the fan is characterized by comprising a motor, at least two blades and a base; wherein:
the motor is in driving connection with the base, and the blades are sequentially arranged along the periphery of the base and can rotate relative to the base;
when no external force acts on each blade, the edges of the adjacent blades are butted or partially overlapped under the action of the self gravity of each blade to form a baffle plate with a surface capable of stopping the chimney.
Preferably, each of the blades is rotatably connected to a plurality of connecting shafts, and both ends of each of the connecting shafts are respectively provided on the connecting cylinder sleeve and the base. The structure is convenient to process and assemble, and the impeller runs stably.
Preferably, each blade is in a fan shape to be matched with an annular structure between the base and the sleeve, the connecting shaft is eccentrically arranged on the corresponding blade so that the blade can automatically reset under the action of gravity of a large-area part under the condition of no stress, and the sleeve is provided with a stop block for limiting the rotation angle of each blade when the blade resets.
Preferably, the axis of the connecting shaft is 5-30 degrees eccentric relative to the central line of the fan blade.
Further, the connecting shafts are uniformly arranged along the outer periphery of the base; each sheet is rotatably connected to the corresponding connecting shaft through a shaft sleeve.
In each of the above schemes, preferably, the motor support is arranged on a bracket, and the bracket is limited on the chimney.
As a further improvement of the above aspects, the blower may be disposed in a first channel, and an outlet of the first channel 31 is connected to an inlet of the chimney; and the first channel is perpendicular to the chimney. The structure is convenient to process and assemble, and the structure of the equipment communicated with the two ports of the first channel does not need to be changed.
In each scheme, under the condition that the external wind pressure is normal, the motor can run at low power, or can not work under the normal condition, and only works under the condition that the external wind pressure is abnormal; in order to further ensure that the motor can still discharge smoke with large air volume when not running, as a further improvement, the motor can also comprise a second channel which is arranged in parallel with the first channel; the outlet of the second channel is connected with the inlet of the chimney 1;
and a valve plate is arranged in the second channel and can act under the action of external force to open the second channel. The scheme can effectively increase the air exhaust area and the air exhaust volume so as to further ensure the emission of flue gas.
The structure of valve plate can have the multiple, better, the valve plate can slide to set up on the guiding axle, the guiding axle supports to set up on the support frame, have on the support frame with the exhaust port of valve plate looks adaptation, the support frame is connected the internal perisporium of second passageway.
Preferably, the guide shaft is provided with a limiting block for limiting the moving distance of the valve plate.
The gas water heater with the chimney anti-downdraft structure in each scheme is characterized in that the fan is arranged in the communicating channel under the condition that the second channel is not arranged, and two ports of the connecting channel are respectively communicated with the outlet of the gas collecting hood of the water heater and the inlet of the chimney.
For the case where a first channel and a second channel are provided simultaneously, the first channel and the second channel are connected between the outlet of the gas collecting hood of the water heater and the inlet of the chimney.
Furthermore, a wind pressure sensor can be arranged in the gas collecting hood, and the wind pressure sensor is connected with a control system through an electric signal;
the motor is connected with the control system through an electric signal. The structure can automatically start the motor to work or not according to the actual wind pressure condition and control the rotating speed of the motor according to the actual wind pressure condition.
Compared with the prior art, the smoke tube anti-downdraft structure and the gas water heater provided by the invention can match exhaust power according to external wind pressure, so that smoke can be discharged according to set requirements under the conditions of normal wind pressure and wind pressure fluctuation of the outside, and the normal use of the water heater is ensured.
Drawings
FIG. 1 is a schematic view of a usage state of an embodiment of the present invention;
fig. 2 to 4 are longitudinal sectional views of the embodiment of the present invention; wherein FIG. 1 is a working condition with the valve plate and vanes fully open; FIG. 3 is a closed position, with the water heater not operating; FIG. 4 is a longitudinal cross-sectional view of only the valve plate opened to a maximum position;
FIGS. 5 and 6 are perspective views of an assembled structure of a blade, a base and a cartridge in an embodiment of the invention; wherein FIG. 5 is a vane closed position with the water heater not operating; FIG. 6 is the vane open position with the water heater operating;
fig. 7 is a schematic perspective view of an assembly structure of a valve plate and a support base according to an embodiment of the present invention (the valve plate is in an open state).
Detailed Description
The invention is described in further detail below with reference to the accompanying examples.
As shown in fig. 1 to 7, the down draft prevention structure of the chimney in the present embodiment will be described by taking the application to a gas water heater as an example.
The chimney anti-downdraft structure is arranged between the chimney 1 and the outlet of the gas collecting hood 51 of the water heater, and specifically comprises a first channel 41 and a second channel 42 which are connected between the chimney 1 and the outlet of the gas collecting hood 51 of the water heater; the first channel 41 and the second channel 42 are arranged independently of each other and perpendicular to the cartridge 1.
In the case where the second passage and its internal parts are not provided, the blower 2 may be provided in a connecting passage (not shown) connected between the chimney 1 and the outlet of the fume hood, and perpendicular to the chimney 1.
The fan 2 is provided in the first passage 41. The fan 2 comprises a motor 22, at least two blades 23 and a base 24; wherein:
the motor 22 is supported and arranged on the bracket 21, and the bracket 21 is connected on the inner circumferential wall of the chimney 1.
An output shaft 22 of the motor is in driving connection with a base 24, and a sleeve 25 is concentrically arranged on the periphery of the base 24; the two ends of the connecting shafts 26 are respectively connected to the base 24 and the sleeve 25, and the connecting shafts are radially arranged and uniformly arranged along the circumferential direction of the base or the sleeve.
The blades 23 are provided in a plurality of fan-shaped segments corresponding to the respective connecting shafts 26, are located between the base 24 and the sleeve 25, and are rotatably connected to the respective connecting shafts through bushings 27. The two shaft sleeves in the embodiment are respectively arranged close to two end parts of the connecting shaft; the bushing may also use bearings to make the rotation of the blades more sensitive.
Each connecting shaft is eccentrically arranged relative to the central line of each corresponding blade, and the blades are divided into a first part with a larger area and a second part with a smaller area; the eccentric angle is between 5 ~ 30, and this embodiment is 10 to when making the blade not atress, the blade rotates along the connecting axle under the action of gravity of the great first portion of area, falls back to initial condition automatically, and each blade butt joint forms the baffle that cuts off first passageway.
The eccentric angle is measured by taking the center point of the base as the center of a circle, and the central line of the blade and the axis of the connecting shaft or the extension lines of the central line and the axis of the connecting shaft pass through the center point of the base.
A plurality of baffle blocks 28 are arranged on the peripheral wall of the sleeve at intervals corresponding to each blade and used for limiting the rotation angle of each blade 23 when the blade 23 is reset; so that each blade just rotates to the butt joint position with the adjacent blade to form a baffle; the stop block 23 is arranged above the vanes and used for stopping the second part of vanes which are separated by the connecting shaft and have small area; the arrangement mode can also effectively prevent the blades from being blown and overturned by external wind power when the water heater does not work.
The second passage 32 is provided in parallel with the first passage 31, and a valve plate 41 is provided in the second passage 32, and the valve plate 41 is movable by an external force to open or close the second passage 32.
The valve plate 41 is arranged on a guide shaft 42 in a sliding mode, the guide shaft 42 is arranged on a support frame 43 in a supporting mode, and a limiting block 45 used for limiting the moving distance of the valve plate 41 is arranged on the guide shaft 42. The support frame 43 is provided with a smoke outlet 44 matched with the valve plate 41, and the support frame 43 is connected with the inner peripheral wall of the second channel.
In the present embodiment, a wind pressure sensor 52 for detecting wind pressure in the gas collecting hood 51 is preferably provided, and the wind pressure sensor 52 and the motor 22 are electrically connected to a control system 53.
When the gas water heater operates, waste flue gas generated by combustion is collected by the gas collecting hood, the blades in the first channel are turned over under the wind pressure generated by the operation of the forced draft fan in the water heater, a smoke exhaust channel is formed between the adjacent blades, and the flue gas enters the chimney through the smoke exhaust channel; meanwhile, the valve plate in the second channel moves upwards along the guide shaft under the wind pressure generated by the strong exhaust fan to expose the smoke outlet, and the smoke enters the chimney from the smoke outlet at the same time to be normally exhausted.
At this time, the motor does not work.
When outdoor wind is blown, when the wind pressure sensor detects that the pressure in the smoke collecting hood is abnormal, the unsmooth exhaust is indicated; the signal is fed back to the control system, the control system controls the motor to operate, the driving base drives the blades and the barrel sleeve to rotate together, and the driving base helps to drive smoke to be smoothly discharged outwards, so that the normal work of the water heater is guaranteed.
When the gas water heater stops running, the blades in the first channel restore to the horizontal position, and the cap in the second channel falls to the initial position to prevent outside wind from flowing back into the chamber through the smoke pipe.
Claims (13)
1. A chimney anti-downdraft structure comprises a fan (2) arranged at the inlet of a chimney (1); the fan is characterized in that the fan (2) comprises a motor (22), at least two blades (23) and a base (24); wherein:
the motor (22) is in driving connection with the base (24), and the blades (23) are sequentially arranged along the periphery of the base (24) and can rotate relative to the base (24);
when no external force acts on each blade, the edges of the adjacent blades (23) are butted or partially overlapped under the action of self gravity to form a baffle plate with a surface capable of stopping the chimney (1).
2. The chimney structure of preventing down-draught according to claim 1, characterized in that each of the blades (23) is rotatably connected to a plurality of connecting shafts (26), and both ends of each of the connecting shafts (26) are respectively on the connecting sleeve (25) and the base (24).
3. The chimney blowback prevention structure according to claim 2, wherein each of the blades (23) is fan-shaped, and the connecting shaft (26) is eccentrically disposed on the corresponding blade (23); the barrel sleeve (25) is provided with a stop block (28) used for limiting the rotation angle of each blade (23) when the blade (23) is reset.
4. The chimney anti-downdraft structure according to claim 3, wherein the axis of the connecting shaft is eccentric 5-30 degrees relative to the central line of the fan blades.
5. The chimney blowback prevention structure according to any one of claims 2 to 4, characterized in that each of the connection shafts (26) is uniformly arranged along an outer peripheral edge of the base (24); each sheet is rotatably connected to a corresponding connecting shaft (26) through a shaft sleeve (27).
6. The chimney anti-downdraft structure according to claim 5, characterized in that the motor (22) is supported and arranged on a bracket (21), and the bracket (21) is limited on the chimney (1).
7. The chimney blowback prevention structure according to claim 6, characterized in that said fan (2) is disposed in a first passage (31), an outlet of said first passage (31) being connected to an inlet of said chimney (1); and the first channel (31) is perpendicular to the cartridge (1).
8. The chimney blowback prevention structure according to claim 7, further comprising a second passage (32) juxtaposed with said first passage; the outlet of the second channel (32) is connected with the inlet of the chimney (1);
a valve plate (41) is arranged in the second channel (32), and the valve plate (41) can act under the action of external force so as to open the second channel (32).
9. The chimney anti-downdraft structure according to claim 8, wherein the valve plate (41) is slidably disposed on a guide shaft (42), the guide shaft (42) is supported on a support frame (43), a smoke exhaust port (44) matched with the valve plate (41) is formed in the support frame (43), and the support frame (43) is connected with the inner peripheral wall of the second channel.
10. The chimney blowback prevention structure according to claim 9, wherein a limiting block (45) for limiting a moving distance of the valve plate (41) is provided on the guide shaft (42).
11. Gas water heater using chimney anti-downdraft structure according to any claim from 8 to 10, characterized in that the fan (2) is arranged in a communication channel, and two ports of the communication channel are respectively communicated with the outlet of the gas collecting hood (51) of the water heater and the inlet of the chimney.
12. Gas water heater using a chimney structure according to any of claims 8 to 10, characterized in that the first channel (31) and the second channel (32) are connected between the outlet of the gas collecting hood (51) of the water heater and the inlet of the chimney.
13. The gas water heater as claimed in claim 11 or 12, wherein a wind pressure sensor (52) is arranged in the gas collecting hood (51), and the wind pressure sensor (52) is electrically connected with a control system;
the motor (22) is in electric signal connection with the control system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811307684.4A CN111141029A (en) | 2018-11-05 | 2018-11-05 | Chimney anti-downdraft structure and gas water heater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811307684.4A CN111141029A (en) | 2018-11-05 | 2018-11-05 | Chimney anti-downdraft structure and gas water heater |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111141029A true CN111141029A (en) | 2020-05-12 |
Family
ID=70515182
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811307684.4A Pending CN111141029A (en) | 2018-11-05 | 2018-11-05 | Chimney anti-downdraft structure and gas water heater |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111141029A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111692608A (en) * | 2020-06-17 | 2020-09-22 | 宁波方太厨具有限公司 | Opening device and water heater comprising same |
| CN112146273A (en) * | 2020-09-11 | 2020-12-29 | 华帝股份有限公司 | Method and device for controlling smoke exhaust and water heater applying same |
| CN112197431A (en) * | 2020-08-11 | 2021-01-08 | 华帝股份有限公司 | Gas water heater and control method thereof |
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| CN108448763A (en) * | 2018-06-06 | 2018-08-24 | 芜湖钻石航空发动机有限公司 | External rotor electric machine |
| CN208059309U (en) * | 2017-12-30 | 2018-11-06 | 华帝股份有限公司 | A kind of down-draught-proof petticoat pipe |
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| US4046318A (en) * | 1976-02-18 | 1977-09-06 | Mervyn Ripley | Automatic boiler damper |
| CN2318573Y (en) * | 1998-02-10 | 1999-05-12 | 许继承 | Ignition electric supply installation for water heater |
| US5845632A (en) * | 1998-04-24 | 1998-12-08 | Schimmeyer; Werner K. | Vent damper including pivot poppet |
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| CN108019944A (en) * | 2017-06-20 | 2018-05-11 | 宁波方太厨具有限公司 | A kind of gas gathering mask and application have the gas heater of the gas gathering mask |
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| CN207501403U (en) * | 2017-11-27 | 2018-06-15 | 芜湖美智空调设备有限公司 | Wind guiding component and air-conditioning equipment |
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| CN108448763A (en) * | 2018-06-06 | 2018-08-24 | 芜湖钻石航空发动机有限公司 | External rotor electric machine |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111692608A (en) * | 2020-06-17 | 2020-09-22 | 宁波方太厨具有限公司 | Opening device and water heater comprising same |
| CN111692608B (en) * | 2020-06-17 | 2022-04-15 | 宁波方太厨具有限公司 | Opening device and water heater comprising same |
| CN112197431A (en) * | 2020-08-11 | 2021-01-08 | 华帝股份有限公司 | Gas water heater and control method thereof |
| CN112146273A (en) * | 2020-09-11 | 2020-12-29 | 华帝股份有限公司 | Method and device for controlling smoke exhaust and water heater applying same |
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Application publication date: 20200512 |
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| RJ01 | Rejection of invention patent application after publication |