CN112629035A - Automatic-cleaning full-premix gas heating water heater and control method thereof - Google Patents
Automatic-cleaning full-premix gas heating water heater and control method thereof Download PDFInfo
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- CN112629035A CN112629035A CN202011403302.5A CN202011403302A CN112629035A CN 112629035 A CN112629035 A CN 112629035A CN 202011403302 A CN202011403302 A CN 202011403302A CN 112629035 A CN112629035 A CN 112629035A
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- 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
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Abstract
The invention discloses an automatic cleaning full-premix gas heating water heater, which comprises a water heater body, wherein a sealing chamber is arranged in the water heater body, a direct current fan, a burner, a heat exchanger and a condensation cavity are sequentially arranged in the sealing chamber from bottom to top, the upper end of the sealing chamber is integrally connected with an air inlet pipeline and an exhaust pipeline, an air quantity sensor is arranged at an air inlet of the air inlet pipeline, a filter device is arranged in a coaxial smoke pipe of the air inlet pipeline, a gas pipe is connected below the burner, a proportional valve for controlling the gas quantity is arranged on the gas pipe, the direct current fan, the air quantity sensor and the proportional valve are all electrically connected with a controller arranged outside the sealing chamber, and the water heater judges the blocking condition of the filter device by monitoring the air quantity of an air inlet of a machine; the reverse rotation of the direct current fan is controlled, so that air is blown out from the air inlet, particles and dust attached to the surface of the filtering device are discharged outdoors, the automatic cleaning effect is achieved, and the blockage condition is dredged.
Description
Technical Field
The invention belongs to the technical field of water heater temperature control, and particularly relates to a full-premix gas heating water heater with an automatic cleaning and filtering device and a control method thereof.
Background
The gas heating water heater adopting the full premixing technology has high requirements on air components, and a filtering device is required to be arranged to filter out particles and dust in the air. Otherwise, the combustion effect is affected, and in severe cases, the burner fire hole can be blocked. At present, a built-in filtering device is mostly adopted, and the main problems are as follows: 1. cleaning requires disassembly of the machine housing and the sealed chamber, which is time consuming and labor intensive; 2. the user and the maintenance personnel can not judge the blocking condition of the filtering device and can not clean in time, which will affect the air intake and the combustion effect of the machine.
Disclosure of Invention
In order to overcome the defects of the prior art, the filter device is externally arranged at the air inlet position of the smoke tube, and the air inlet of the smoke tube is provided with the air quantity monitoring device, so that the automatic cleaning full-premix gas heating water heater and the control method thereof are provided.
The invention provides an automatic cleaning full-premix gas heating water heater, wherein a sealing chamber is arranged in a water heater body, a direct current fan, a burner, a heat exchanger and a condensation cavity are sequentially arranged in the sealing chamber from bottom to top, the upper end of the sealing chamber is integrally connected with an air inlet pipeline and an exhaust pipeline, an air inlet of the air inlet pipeline is provided with an air quantity sensor, a filtering device is arranged in a coaxial smoke pipe of the air inlet pipeline, a gas pipe is connected below the burner, a proportional valve for controlling gas quantity is arranged on the gas pipe, and the direct current fan, the air quantity sensor and the proportional valve are all electrically connected with a controller arranged outside the sealing chamber.
Furthermore, the upper end of the condensation cavity is communicated with an exhaust pipeline.
Furthermore, the sealing chamber is externally connected with a water inlet pipe, a water outlet pipe and a fuel gas pipe.
Furthermore, the water inlet pipe and the water outlet pipe are respectively connected with a heat exchanger pipeline in the sealed chamber, and the gas pipe is connected with a combustor in the sealed chamber.
The invention also discloses a method for controlling the automatic cleaning of the fully premixed gas heating water heater, which comprises the following steps:
s1, when the wall-mounted boiler is normally combusted for heat supply, the controller monitors the current of the proportional valve, and the air quantity sensor monitors the air intake quantity;
s2, judging whether the air inflow meets the requirement, if so, maintaining normal operation, if higher than the requirement, executing step S3, and if lower than the requirement, executing step S4;
s3, reducing the rotating speed of the fan to meet the requirement, and prompting a user to overhaul the filtering device by the machine;
s3, increasing the wind speed of the direct current fan, and mechanically prompting a user that the filter device is blocked;
s4, after the heat supply is finished, the controller controls the machine to enter a standby state;
s5, controlling the fan to rotate reversely by the controller, cleaning the filtering device and dredging the blockage;
s6, detecting whether the air inflow of the next operation meets the requirement, if not, returning to the step S2, if so, entering the step S7;
and S7, finishing and clearing the blockage prompt.
Further, the condition that the intake air amount of the step S1 meets the requirement is that the intake air amount is not less than 11.8 ×. η I and not more than Q and not more than 13.3 ×. η I.
Further, η is a proportionality coefficient, and I is a current of the proportional valve.
Furthermore, the filter device is blocked when the Q air inlet quantity is less than 11.8 eta I, and the filter device is damaged and not tightly sealed when the Q air inlet quantity is more than 13.3 eta I.
Compared with the prior art, the invention has the advantages and the technical effects that: the filtering device is externally arranged at the air inlet of the smoke pipe, so that the problem that the machine shell needs to be disassembled during cleaning is solved; the air inlet of the smoke pipe is provided with an air quantity monitoring device, and the blocking condition of the filtering device is judged by monitoring the air quantity of the air inlet of the machine. When the control program judges that the blockage occurs, the controller controls the direct current fan to rotate reversely, so that air is blown out from the air inlet, particles and dust attached to the surface of the filtering device are discharged outdoors, the automatic cleaning effect is achieved, and the blockage condition is dredged.
Drawings
Fig. 1 is a schematic view of the internal structure of the fully premixed gas heating water heater according to the present invention.
Fig. 2 is a schematic flow chart of a control method of the fully premixed gas heating water heater according to the present invention.
In the figure: 1. a water heater body; 11. a sealed chamber; 111. a burner; 112. a direct current fan; 113. a heat exchanger; 114. a condensation chamber; 12. a water inlet pipe; 13. a water outlet pipe; 14. a gas pipe; 15. a proportional valve; 16. an air inlet pipeline; 17. an exhaust line; 18. a coaxial smoke tube; 2. a controller; 21. a display; 3. a filtration device; 4. an air quantity sensor.
Detailed Description
The technical solution of the present invention will be described in further detail with reference to the accompanying drawings and the detailed description.
Example 1
The utility model provides an automatic clear full premix gas heating water heater, includes water heater body 1, this internal seal chamber 11 that is equipped with of water heater, install direct current fan 112, combustor 111, heat exchanger 113 and condensation chamber 114 from bottom to top in proper order in the seal chamber 11, the integrative air intake pipeline 16 and the exhaust pipe 17 of connecting in upper end of seal chamber 11, air sensor 4 is installed to air intake department of air intake pipeline 16, and install filter equipment 3 in air intake pipeline 16's the coaxial tobacco pipe 18, the below of combustor 111 is connected with gas pipe 14, install the proportional valve 15 of control gas volume on the gas pipe 14, direct current fan 112, air sensor 4 and proportional valve 15 all are connected with the controller 2 electricity that sets up outside seal chamber 11. The upper end of the condensation chamber 114 communicates with the exhaust duct 17.
The sealing chamber 11 is externally connected with a water inlet pipe 12, a water outlet pipe 13 and a fuel gas pipe 14, the water inlet pipe 12 and the water outlet pipe 13 are respectively connected with a heat exchanger 113 pipeline in the sealing chamber 11, and the fuel gas pipe 14 is connected with a combustor 111 in the sealing chamber 11. When the water heater works normally, the controller 2 controls the proportional valve 15, the direct current fan 112 and the air quantity sensor 4; the gas entering from the gas pipe 14 is combusted in the combustor 111, and the direct current fan 112 rotates to drive air to enter the air inlet pipeline 16 from the air inlet and further enter the combustion chamber in the sealed chamber 11 for combustion supporting; the burned flue gas and the heat generated during the combustion exchange heat through the heat exchanger 113 (the heat is used for heating the water in the water inlet pipe 12), and the heat is condensed through the condensing cavity 114 and enters the exhaust pipeline 17, and the exhaust pipeline 17 exhausts the exhaust gas. The water heater is characterized in that a filtering device 3 is installed in a coaxial smoke tube 18 of an air inlet, the filtering device 3 is an air filter, when the filtering device 3 is blocked, an air volume sensor 4 at the air inlet of an air inlet pipeline 16 detects that the air volume is not in accordance with requirements, the air volume sensor 4 transmits signals to a controller 2, and the controller 2 controls a direct current fan 112 to rotate reversely, so that airflow in a sealing chamber 11 reversely flows to remove the blockage at the air inlet.
A method for controlling automatic cleaning of a fully premixed gas heating water heater is shown in the specific flow chart of figure 2 and comprises the following steps:
s1, when the wall-hanging stove is normally burning for supplying heat, the controller 2 monitors the current of the proportional valve 15, the air quantity sensor 4 monitors the air inflow, and the condition that the air inflow meets the requirement is that Q is not less than 11.8 ^ IIntake air volume≤13.3*η*I；QIntake air volume<11.8 η I, the filter device 3 is blocked, said QIntake air volume>13.3 η I, the filter device 3 is damaged and not sealed tightly;
s2, judging whether the air inflow meets the requirement, if so, maintaining normal operation, if higher than the requirement, executing step S3, and if lower than the requirement, executing step S4;
s3, reducing the rotating speed of the fan to meet the requirement, and prompting a user to overhaul the filtering device 3 by the machine;
s3, the direct current fan 112 increases the wind speed, and the user is mechanically prompted that the filter device 3 is blocked;
s4, after the heat supply is finished, the controller 2 controls the machine to enter a standby state;
s5, the controller 2 controls the fan to rotate reversely, cleans the filtering device 3 and dredges blockage;
s6, detecting whether the air inflow of the next operation meets the requirement, if not, returning to the step S2, if so, entering the step S7;
and S7, finishing and clearing the blockage prompt.
In step S1, when the machine is normally fired for heating: gas consumption QGas quantityThe calibration can be carried out by the current I of the proportional valve 15, and the current I and the proportional valve are in positive correlation. The following formula is satisfied:
①、Qgas quantity＝η*I
(eta-proportionality coefficient, calibration by experiment)
Also known are the following conditions:
(1)CH4+2O2＝CO2+2H2o, 1 volume CH4 requires 2 volumes O2Carrying out a combustion reaction;
(2) o in air2The content is 21 percent, and the air inlet quantity Q of the full-premix wall-hanging furnace can be calibrated when the wall-hanging furnace leaves a factoryIntake air volumeSo that O is contained in the combustion flue gas2The content is 4% -6%;
the combination of (1) and (2) can conclude that:
② 1 volume CH4 (Q)Gas quantity) The combustion requires 2 × 100/(21-4) ═ 11.8 volumes to 2 × 100/(21-6) ═ 13.3 volumes of air.
Comprehensively obtaining the air intake, the gas quantity and the current of the proportional valve 15 according to the first and second conditions:
11.8*η*I≤Qintake air volume≤13.3*η*I
Under various conditions, the controller 2 analyzes and judges the monitored current and intake air data of the proportional valve 15 to obtain the following table:
(1) the filtering device 3 is externally arranged at the air inlet of the smoke pipe, so that the problem that the machine shell needs to be disassembled during cleaning is solved;
(2) an air quantity monitoring device is arranged at the air inlet of the smoke pipe, and the blocking condition of the filtering device 3 is judged by monitoring the air quantity of the air inlet of the machine. When the control program judges that the blockage occurs, the controller 2 controls the direct current fan 112 to rotate reversely, so that air is blown out from the air inlet, particles and dust attached to the surface of the filtering device 3 are discharged outdoors, the automatic cleaning effect is achieved, and the blockage condition is dredged.
In addition, in the description of the present invention, it is to be understood that the terms "central," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "axial," "radial," "circumferential," and the like are used in an orientation or positional relationship indicated for convenience in describing the present invention and to simplify description, but do not indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present invention.
The above description is only an example of the present invention, and is not intended to limit the present invention in any way, and those skilled in the art can make many variations and modifications of the present invention without departing from the scope of the present invention by using the method disclosed above, and the present invention is covered by the claims.
Claims (8)
1. The utility model provides an automatic clear full premix gas heating water heater, includes water heater body (1), its characterized in that: this internal seal chamber (11) that is equipped with of water heater, install direct current fan (112), combustor (111), heat exchanger (113) and condensation chamber (114) from bottom to top in proper order in seal chamber (11), the integrative air intake pipe way (16) and exhaust pipe (17) of connecting in upper end of seal chamber (11), air intake department of air intake pipe way (16) installs air sensor (4), and install filter equipment (3) in coaxial tobacco pipe (18) of air intake pipe way (16), the below of combustor (111) is connected with gas pipe (14), install proportional valve (15) of control gas volume on gas pipe (14), direct current fan (112), air sensor (4) and proportional valve (15) all are connected with controller (2) electricity that set up outside seal chamber (11).
2. The self-cleaning fully premixed gas heating water heater according to claim 1, wherein: the upper end of the condensation cavity (114) is communicated with an exhaust pipeline (17).
3. The self-cleaning fully premixed gas heating water heater according to claim 1, wherein: the sealing chamber (11) is externally connected with a water inlet pipe (12), a water outlet pipe (13) and a fuel gas pipe (14).
4. The self-cleaning fully premixed gas heating water heater according to claim 3, wherein: the water inlet pipe (12) and the water outlet pipe (13) are respectively connected with a heat exchanger (113) pipeline in the sealed chamber (11), and the gas pipe (14) is connected with a combustor (111) in the sealed chamber (11).
5. A method for controlling automatic cleaning of a fully premixed gas heating water heater is characterized by comprising the following steps: the method comprises the following steps:
s1, when the wall-mounted boiler is normally combusted for heat supply, the controller (2) monitors the current of the proportional valve (15), and the air quantity sensor (4) monitors the air intake quantity;
s2, judging whether the air inflow meets the requirement, if so, maintaining normal operation, if higher than the requirement, executing step S3, and if lower than the requirement, executing step S4;
s3, reducing the rotating speed of the fan to meet the requirement, and prompting a user to overhaul the filtering device (3) by the machine;
s3, increasing the wind speed of the direct current fan (112), and mechanically prompting a user that the filter device (3) is blocked;
s4, after the heat supply is finished, the controller (2) controls the machine to enter a standby state;
s5, controlling the fan to rotate reversely by the controller (2), cleaning the filtering device (3) and dredging blockage;
s6, detecting whether the air inflow of the next operation meets the requirement, if not, returning to the step S2, if so, entering the step S7;
and S7, finishing and clearing the blockage prompt.
6. The method for controlling automatic cleaning of a fully premixed gas heating water heater according to claim 5, wherein: the condition that the intake air amount of the step S1 meets the requirement is that the intake air amount is not less than 11.8 ×. η I and not more than Q and not more than 13.3 ×. η I.
7. The method for controlling automatic cleaning of a fully premixed gas heating water heater according to claim 6, wherein: the eta is a proportionality coefficient, and the I is the current of the proportional valve (15).
8. The method for controlling automatic cleaning of a fully premixed gas heating water heater according to claim 5, wherein: and when the Q air inlet volume is less than 11.8 eta I, the filtering device (3) is blocked, and when the Q air inlet volume is greater than 13.3 eta I, the filtering device (3) is damaged and is not sealed tightly.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011403302.5A CN112629035A (en) | 2020-12-02 | 2020-12-02 | Automatic-cleaning full-premix gas heating water heater and control method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011403302.5A CN112629035A (en) | 2020-12-02 | 2020-12-02 | Automatic-cleaning full-premix gas heating water heater and control method thereof |
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| CN112629035A true CN112629035A (en) | 2021-04-09 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114060900A (en) * | 2021-11-11 | 2022-02-18 | 淄博能源研究院 | Intelligent gas warmer |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2258120A1 (en) * | 1998-12-22 | 2000-06-22 | Arnaldo Attallah | Hvac and dhw control method and system therefore |
| CN207146620U (en) * | 2017-08-31 | 2018-03-27 | 广东美的制冷设备有限公司 | Air conditioner |
| CN208567132U (en) * | 2018-03-30 | 2019-03-01 | 积顿新热能设备无锡有限公司 | A kind of floor furnace having filtration and warning function |
| CN110374772A (en) * | 2019-09-11 | 2019-10-25 | 潍柴动力股份有限公司 | The detection method and device of air cleaner blocking |
| CN209934298U (en) * | 2019-02-28 | 2020-01-14 | 广东万和热能科技有限公司 | Air filtering device with warning function and gas boiler with air filtering device |
-
2020
- 2020-12-02 CN CN202011403302.5A patent/CN112629035A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2258120A1 (en) * | 1998-12-22 | 2000-06-22 | Arnaldo Attallah | Hvac and dhw control method and system therefore |
| CN207146620U (en) * | 2017-08-31 | 2018-03-27 | 广东美的制冷设备有限公司 | Air conditioner |
| CN208567132U (en) * | 2018-03-30 | 2019-03-01 | 积顿新热能设备无锡有限公司 | A kind of floor furnace having filtration and warning function |
| CN209934298U (en) * | 2019-02-28 | 2020-01-14 | 广东万和热能科技有限公司 | Air filtering device with warning function and gas boiler with air filtering device |
| CN110374772A (en) * | 2019-09-11 | 2019-10-25 | 潍柴动力股份有限公司 | The detection method and device of air cleaner blocking |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114060900A (en) * | 2021-11-11 | 2022-02-18 | 淄博能源研究院 | Intelligent gas warmer |
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Application publication date: 20210409 |