CN109579278A - A kind of multi fan tandem gas heater and control method - Google Patents
A kind of multi fan tandem gas heater and control method Download PDFInfo
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- CN109579278A CN109579278A CN201811513574.3A CN201811513574A CN109579278A CN 109579278 A CN109579278 A CN 109579278A CN 201811513574 A CN201811513574 A CN 201811513574A CN 109579278 A CN109579278 A CN 109579278A
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- fan
- air blower
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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
- 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
- F24H1/14—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 by tubes, e.g. bent in serpentine form
- F24H1/145—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 by tubes, e.g. bent in serpentine form 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
- F24H9/20—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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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Regulation And Control Of Combustion (AREA)
Abstract
The invention belongs to technical field of water heaters, disclose a kind of multi fan tandem gas heater, including combustion chamber and smoke pipe, further includes: air blower is set to below combustion chamber, is used for the air blast into combustion chamber；Exhaust fan is set to below smoke pipe, and the air inlet of exhaust fan is connected to by combustion chamber with the air outlet of air blower；Control device, for adjusting the working speed of air blower and exhaust fan.The invention also discloses the control methods of above-mentioned multi fan tandem gas heater.The present invention can meet the requirement of air quantity and operating pressure by setting air blower and exhaust fan by the way of running air blower and exhaust fan compared with the slow-speed of revolution, therefore fan operation noise is lower, improves users'comfort.And the present invention has both the advantages of air-exhaust type and blowing type gas water heater, and the revolving speed of air blower and exhaust fan is adjusted by control device, is capable of providing higher wind pressure (having higher anti-pressure ability), is adapted to the extraneous wind pressure of wider range.
Description
Technical field
The present invention relates to technical field of water heaters more particularly to a kind of multi fan tandem gas heater and controlling parties
Method.
Background technique
With the popularization and application of gas heater, great convenience is brought to daily life, simultaneously because combustion gas
The insufficient or gas leakage of burning and the safety accident that causes occurs repeatedly, therefore country is in the standard of gas heater
Mandatory provision, it is necessary to be equipped with Forced discharge fan, the exhaust gas that Forced discharge fan pump drainage burning simultaneously generates in gas heater starting.
There are two types of typical structures for forced-ventilated water heater: upper air-exhaust type and lower blowing-type.However, either upper air-exhaust type still descends blowing-type
Gas heater, have the following problems:
The first, the product structure of gas heater is very compact, and blower sizes can not be made greatly, leads to blower itself property
It can be limited；The second, the resistance of ducting of gas heater itself is larger, causes smoke evacuation resistance very big；Third, different geographical, difference
The extraneous wind pressure in season is different, if external wind presses through greatly, gas heater resistance of discharging fume when in use will increase suddenly
Add, the smoke exhaust efficiency of Forced discharge fan is made to be lower, so that burning is insufficient, exhaust gas is exceeded, and water temperature is lower, and it is hidden to there is safety
Suffer from, high risks are caused to the health of user.
To solve the above-mentioned problems, increase the working speed of blower usually to realize, generally requiring increases to 1500-
4500RPM is even higher, causes fan noise excessive, influences user experience.And even so, can still there be anti-pressure ability
The case where deficiency causes burner to be closed.
Summary of the invention
The purpose of the present invention is to provide a kind of multi fan tandem gas heater and control methods, to solve existing mention
The problem that noise caused by high rotation speed of fan is big and anti-pressure ability is insufficient.
To achieve this purpose, the present invention adopts the following technical scheme:
A kind of multi fan tandem gas heater, including combustion chamber and smoke pipe, further includes:
Air blower is set to below the combustion chamber, is used for the air blast into the combustion chamber；
Exhaust fan is set to below the smoke pipe, and the air inlet of the exhaust fan passes through the combustion chamber and the drum
The air outlet of blower is connected to；
Control device, for adjusting the working speed of the air blower and the exhaust fan.
Preferably, further include the temperature collecting device and flow harvester for being all connected to the control device, it is described
Temperature collecting device is used to acquire the inflow temperature signal and leaving water temperature signal of water heater, and the flow harvester is used for
Acquire the water flow signal of water inlet.
Preferably, further including pressure acquisition device, the pressure acquisition device is connected to the control device, for adopting
Collect extraneous wind pressure signal.
Preferably, the air blower and the exhaust fan are frequency conversion fan.
Preferably, the air blower is provided at least two, at least two air blowers are arranged in series in the combustion
It burns below room；
And/or the exhaust fan is provided at least two, at least two exhaust fans are arranged in series under the smoke pipe
Side.
The present invention also provides a kind of control methods of multi fan tandem gas heater, comprising:
The working speed of the exhaust fan below the air blower and smoke pipe below combustion chamber is adjusted, by control device with suitable
Answer different size of extraneous wind pressure.
Preferably, the exhaust fan below the air blower and smoke pipe adjusted by control device below combustion chamber
Working speed includes:
Obtain fan delivery Q；
According to the sum of extraneous wind pressure and the system resistance of the gas heater, total working pressure P is obtained；
According to the total working pressure P and pressure distribution coefficient A of the air blowerDrum, the exhaust fan pressure point
Distribution coefficient AIt takes out, obtain the operating pressure P of the air blowerDrumWith the operating pressure P of the exhaust fanIt takes out；
According to the fan delivery Q and the operating pressure PDrumObtain the working speed w of the air blowerDrum, according to described
The fan delivery Q and operating pressure PIt takes outObtain the working speed w of the exhaust fanIt takes out；
With the working speed wDrumThe air blower is run, with the working speed wIt takes outRun the exhaust fan.
Preferably, the acquisition fan delivery Q include: calculate need gas quantity, and according to the gas quantity of calculating with
And air-fuel ratio, calculate the fan delivery Q.
Preferably, the gas quantity needed that calculates includes:
Inflow temperature and leaving water temperature are acquired by temperature collecting device, flow of inlet water is acquired by flow harvester,
Thermic load needed for being calculated according to the inflow temperature, the leaving water temperature and the flow of inlet water；
According to the thermic load and the calorific value of combustion gas, the gas quantity of needs is calculated.
Preferably, the pressure distribution coefficient ADrumWith the pressure distribution coefficient AIt takes outIt is identical.
Preferably, the air blower is provided with the pressure distribution coefficient of at least two, and at least two air blowers
ADrumIt is not identical；
And/or the exhaust fan is provided with the pressure distribution coefficient A of at least two, and at least two exhaust fansIt takes outNo
It is identical.
Beneficial effects of the present invention: by setting air blower and exhaust fan, can using compared with slow-speed of revolution operation air blower and
The mode of exhaust fan meets the requirement of air quantity and operating pressure, therefore fan operation noise is lower, improves users'comfort.
And the present invention has both the advantages of air-exhaust type and blowing type gas water heater, adjusts air blower and exhaust fan by control device
Revolving speed, compared to traditional single blower water heater, the gas heater of multi fan series operation is capable of providing higher wind pressure (i.e.
With higher anti-pressure ability), it is adapted to the extraneous wind pressure of wider range.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of multi fan tandem gas heater of the present invention；
Fig. 2 is the flow chart of the control method of multi fan tandem gas heater of the present invention；
Fig. 3 is the performance chart between the revolving speed and air quantity, operating pressure of air blower of the present invention.
In figure:
1, combustion chamber；2, smoke pipe；3, air blower；4, exhaust fan；5, control device；6, air inlet pipe；7, heat-exchanging chamber；8, into
Water pipe；9, outlet pipe；10, pressure acquisition device.
Specific embodiment
To keep the technical problems solved, the adopted technical scheme and the technical effect achieved by the invention clearer, below
It will be described in further detail in conjunction with technical solution of the attached drawing to the embodiment of the present invention, it is clear that described embodiment is only
It is a part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, those skilled in the art exist
Every other embodiment obtained under the premise of creative work is not made, shall fall within the protection scope of the present invention.
In the description of the present invention unless specifically defined or limited otherwise, term " connected ", " connection ", " fixation " are answered
It is interpreted broadly, for example, it may be being fixedly connected, may be a detachable connection, or is integral；It can be mechanical connection,
It can be electrical connection；It can be directly connected, the company inside two elements can also be can be indirectly connected through an intermediary
Logical or two elements interaction relationship.For the ordinary skill in the art, can be understood with concrete condition above-mentioned
The concrete meaning of term in the present invention.
In the present invention unless specifically defined or limited otherwise, fisrt feature second feature "upper" or "lower"
It may include that the first and second features directly contact, also may include that the first and second features are not direct contacts but pass through it
Between other characterisation contact.Moreover, fisrt feature includes the first spy above the second feature " above ", " above " and " above "
Sign is right above second feature and oblique upper, or is merely representative of first feature horizontal height higher than second feature.Fisrt feature exists
Second feature " under ", " lower section " and " following " include that fisrt feature is directly below and diagonally below the second feature, or is merely representative of
First feature horizontal height is less than second feature.
Fig. 1 is the structural schematic diagram of multi fan tandem gas heater of the invention, as shown in Figure 1, of the invention is more
Fans in series formula gas heater includes combustion chamber 1, smoke pipe 2, air blower 3, exhaust fan 4, control device 5, air inlet pipe 6, heat friendship
Change room 7, water inlet pipe 8 and outlet pipe 9, in which:
Fire row (not shown) is provided in combustion chamber 1, which is connected to air inlet pipe 6, and heat-exchanging chamber 7 is located at combustion
1 top of room is burnt, and is respectively communicated in water inlet pipe 8 and outlet pipe 9, smoke pipe 2 is located at 7 top of heat-exchanging chamber, for flue gas to be discharged.?
Flow harvester (not shown) and temperature collecting device (not shown) are equipped at above-mentioned water inlet pipe 8, wherein flowing
Amount acquisition device is used to acquire the water flow in water inlet pipe 8, and temperature collecting device is used to acquire the inflow temperature at water inlet pipe 8.
Temperature collecting device (not shown) is equipped at outlet pipe 9, the temperature collecting device is for acquiring outlet pipe 9
The leaving water temperature at place.Pressure acquisition device 10 is equipped at above-mentioned smoke pipe 2, which is used to acquire extraneous wind pressure
Signal, specifically, the wind pressure signal includes atmosphere static pressure and wind speed dynamic pressure.In the present embodiment, above-mentioned temperature collecting device can be with
It is temperature sensor common in the art, flow harvester can be flow sensor, and pressure acquisition device 10 can be with
It is pressure sensor.
Above-mentioned gas heater further includes having control device 5, the control device 5 be connected to above-mentioned combustion chamber 1, air blower 3,
Exhaust fan 4, flow harvester, temperature collecting device and pressure acquisition device 10 can be filled according to above-mentioned flow collection
It sets, the water flow signal that temperature collecting device and pressure acquisition device 10 acquire respectively, inflow temperature signal, leaving water temperature letter
Number and wind pressure signal, to adjust the working speed of air blower 3 and exhaust fan 4 so that gas heater have it is sufficiently high
Anti-pressure ability, the extraneous wind pressure of Lai Shiying wider range.
In the present embodiment, above-mentioned air blower 3 is set to 1 lower section of combustion chamber, and above-mentioned exhaust fan 4 is set to 2 lower section of smoke pipe, and
The air inlet of the exhaust fan 4 passes sequentially through heat-exchanging chamber 7 and combustion chamber 1, is connected to the air outlet of air blower 3.The drum of air blower 3
Enter air to light flame at combustion chamber 1, enters the air inlet of exhaust fan 4 through heat-exchanging chamber 7 with the flue gas after after-combustion, and
It is delivered in smoke pipe 2 by exhaust fan 4, gas heater is discharged.
In the present embodiment, by setting air blower 3 and exhaust fan 4, and the two forms the structure type of a kind of " series connection ",
Gas heater is allowed to meet air quantity and work pressure by the way of running air blower 3 and exhaust fan 4 compared with the slow-speed of revolution
Force request, therefore fan operation noise is lower, improves users'comfort.
Further, in the present embodiment, above-mentioned air blower 3 and exhaust fan 4 can be frequency conversion fan, pass through frequency conversion fan
Setting, can adjust revolving speed, as needed to realize air feed and the air draft requirement of different air quantity.
In the present embodiment, it is preferred that the respectively setting one of above-mentioned air blower 3 and exhaust fan 4, with meet reduce noise and
It is measuring body meanwhile, it is capable to reduce cost.Of course, it should be understood that above-mentioned air blower 3 and exhaust fan 4 also can be set it is multiple,
When air blower 3 is set as two or more, more than two air blowers 3 can be used concatenated mode and be placed in 1 lower section of combustion chamber, i.e.,
In more than two air blowers 3, the air outlet of an air blower 3 is connected to another drum in the adjacent air blower 3 of any two
The air inlet of blower 3.Similarly, when exhaust fan 4 is set as two or more, concatenated side is can be used in more than two exhaust fans 4
Formula is placed in the lower section of smoke pipe 2, i.e., in more than two exhaust fans 4, exhaust fan 4 goes out in the adjacent exhaust fan 4 of any two
Air port is connected to the air inlet of another exhaust fan 4.It should be noted that the air blower 3 of the present embodiment and of exhaust fan 4
Number, is also possible to air blower 3 and is set as one, exhaust fan 4 is set as two, and two exhaust fans 4 can be used concatenated mode and set
In 2 lower section of smoke pipe.Or exhaust fan 4 is set as one, air blower 3 is set as two, and concatenated side can be used in two air blowers 3
Formula is placed in 1 lower section of combustion chamber.
The present embodiment also provides a kind of control method of multi fan tandem gas heater, and it is suitable for above-mentioned windy
Machine tandem gas heater, specifically, can refer to Fig. 2, the control method the following steps are included:
S10, the gas quantity needed is calculated.
Specifically, being to acquire inflow temperature by the temperature collecting device at water inlet pipe 8, pass through the temperature at outlet pipe 9
Acquisition device acquires leaving water temperature, flow of inlet water is acquired by the flow harvester at water inlet pipe 8, wherein above-mentioned leaving water temperature
It is identical as leaving water temperature set by user.
Subsequent above-mentioned inflow temperature, leaving water temperature and flow of inlet water information are delivered to control device 5, control device 5
Thermic load needed for being calculated according to inflow temperature, leaving water temperature and flow of inlet water, later according to thermic load and the heat of combustion gas
Value, calculates the gas quantity of needs.
S20, fan delivery Q is calculated.
After step S10 calculates the gas quantity of needs, (out according to the air-fuel ratio of the gas quantity and full combustion needs
Set before factory), required air capacity is calculated, that is, air blower 3 and exhaust fan 4 need air quantity to be offered, i.e. wind
Fan delivery Q.By air blower 3 in this present embodiment and exhaust fan 4 by the way of " series connection ", therefore air blower 3 and exhaust fan 4
Fan delivery Q is all the same.
S30, total working pressure P is obtained.
Specifically, above-mentioned total working pressure P can be obtained using following methods: being acquired by pressure acquisition device 10 outer
Boundary's wind pressure, control device 5 arrive after the two is summed according to the extraneous wind pressure of acquisition and the system resistance of gas heater
Total working pressure P.In the present embodiment, above system resistance be surveyed before factory it is measured, can be using by pipe
The mode of road blowing obtains, and specific acquisition pattern is the prior art, repeats no more.
S40, the operating pressure P for obtaining air blower 3DrumAnd the operating pressure P of exhaust fan 4It takes out。
I.e. according to the step S30 total working pressure P obtained the and pressure distribution coefficient A of air blower 3Drum, to calculate drum
The operating pressure P of blower 3Drum.Simultaneously according to the total working pressure P and pressure distribution coefficient A of exhaust fan 4It takes out, to calculate exhausting
The operating pressure P of machine 4It takes out。
Specifically, the operating pressure P of above-mentioned air blower 3DrumIt can be according to formula PDrum=ADrum× P is obtained, above-mentioned exhaust fan 4
Operating pressure PIt takes outIt can be according to formula PIt takes out=AIt takes out× P is obtained.
In this step, the pressure distribution coefficient A of above-mentioned air blower 3DrumAnd the pressure distribution coefficient A of exhaust fan 4It takes outIt is to fire
It is good according to the parameter setting of air blower 3 and exhaust fan 4 before the factory of gas water heater.In the present embodiment, above-mentioned air blower 3
Pressure distribution coefficient ADrumAnd the pressure distribution coefficient A of exhaust fan 4It takes outIt is preferably arranged to identical.
Of course, it should be understood that in the present embodiment, the number of above-mentioned air blower 3 and exhaust fan 4 can also basis
It needs to select to be arranged multiple and is arranged in series, when air blower 3 is set as two or more, the pressure of more than two air blowers 3
Distribution coefficient ADrumIt can be identical, be also possible to difference, correspondingly, the pressure distribution coefficient A of more than two exhaust fans 4It takes out?
It can be identical, be also possible to difference.And at this point, between more than two air blowers 3 and more than two exhaust fans 4, two
The pressure distribution coefficient A of personDrumAnd AIt takes outMay be set to be that part is identical, part is different, may be set to be it is entirely different, specifically
It can be set as needed.
S50, the working speed w for obtaining air blower 3DrumAnd the working speed w of exhaust fan 4It takes out。
The operating pressure P of air blower 3 is obtained in step S40DrumAnd the operating pressure P of exhaust fan 4It takes outAfterwards, according to blower wind
Measure Q and operating pressure PDrum, can be obtained the working speed w of air blower 3Drum.According to fan delivery Q and operating pressure PIt takes out, can obtain
Obtain the working speed w of exhaust fan 4It takes out。
Specifically, the working speed w of above-mentioned air blower 3DrumThe revolving speed and wind for the air blower 3 being stored in advance can be passed through
Performance chart and fan delivery Q, operating pressure P between amount, wind pressureDrumIt obtains.In the present embodiment, above-mentioned air blower 3
For performance chart between revolving speed and air quantity, wind pressure as shown in figure 3, its abscissa is fan delivery Q, ordinate is operating pressure
PDrum.Above-mentioned fan delivery Q and operating pressure PDrumBetween form a function relation curve, in figure, the meeting in the function relation curve
It is related to multiple coordinate points (point A, point B etc. as illustrated in the drawing), wherein each coordinate points can correspond to a revolving speed (corresponding relationship
It is stored in advance in control device), the corresponding revolving speed w2 of such as point A a corresponding revolving speed w1, point B.Therefore, pass through the wind of acquisition
Fan delivery Q and operating pressure PDrum, fan delivery Q and operating pressure P can be gotDrumSeat on function relation curve
Punctuate, and then according to the corresponding relationship of the coordinate points and revolving speed, it can be obtained the working speed w of air blower 3Drum。
Similarly, the working speed w of above-mentioned exhaust fan 4It takes outCan by the revolving speed of the exhaust fan 4 being stored in advance and air quantity,
Performance chart and fan delivery Q, operating pressure P between wind pressureIt takes outIt obtains.The revolving speed and air quantity, wind of above-mentioned exhaust fan 4
The revolving speed of performance chart principle and drum exhaust fan 4 between pressure is identical as the performance chart principle between air quantity, wind pressure, therefore
It repeats no more.
It should be noted that when air blower 3 and exhaust fan 4 are disposed as two or more, if multiple air blowers 3 and more
The model of a exhaust fan 4 is all different, then each air blower 3 is corresponding between the revolving speed and air quantity, wind pressure of air blower 3
Performance chart.Each exhaust fan 4 is corresponding with the performance chart between the revolving speed and air quantity, wind pressure of exhaust fan 4.
S60, with working speed wDrumAir blower 3 is run, with working speed wIt takes outRun exhaust fan 4.
I.e. when opening air blower 3, control device 5 is according to the working speed w of the air blower 3 of acquisitionDrum, control air blower 3
With its corresponding working speed wDrumIt is run.Likewise, according to the working speed w of the exhaust fan 4 of acquisitionIt takes out, control exhaust fan 4
With its corresponding working speed wIt takes outIt is run.
In the present embodiment, by above-mentioned control method, under the premise of meeting the operating conditions such as identical air quantity, wind pressure, compared to biography
Single blower water heater of system, the revolving speed that when 4 series operation of air blower 3 and exhaust fan needs is lower, therefore fan noise is also lower,
Improve users'comfort.
In addition, the above-mentioned multi fan tandem gas heater of the present embodiment, has both air-exhaust type and blowing type gas hot water
The advantages of device, adjusts the revolving speed of air blower 3 and exhaust fan 4 by control device 5, more compared to traditional single blower water heater
The gas heater of fans in series operation is capable of providing higher wind pressure (having higher anti-pressure ability), is adapted to wider
The extraneous wind pressure of range.
Obviously, the above embodiment of the present invention is just for the sake of clearly illustrating examples made by the present invention, and being not is pair
The restriction of embodiments of the present invention.For those of ordinary skill in the art, be able to carry out it is various it is apparent variation,
It readjusts and substitutes without departing from protection scope of the present invention.There is no need and unable to give thoroughly all embodiments
It lifts.Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the present invention
Within scope of protection of the claims.
Claims (11)
1. a kind of multi fan tandem gas heater, including combustion chamber (1) and smoke pipe (2), which is characterized in that further include:
Air blower (3) is set to below the combustion chamber (1), is used for the combustion chamber (1) interior air blast；
Exhaust fan (4) is set to below the smoke pipe (2), and the air inlet of the exhaust fan (4) passes through the combustion chamber (1)
It is connected to the air outlet of the air blower (3)；
Control device (5), for adjusting the working speed of the air blower (3) and the exhaust fan (4).
2. multi fan tandem gas heater according to claim 1, which is characterized in that further include be all connected to it is described
The temperature collecting device and flow harvester of control device (5), the temperature collecting device is for acquiring the gas and hot water
The inflow temperature signal and leaving water temperature signal of device, the flow harvester are used to acquire the water flow signal of water inlet.
3. multi fan tandem gas heater according to claim 1, which is characterized in that further include pressure acquisition device
(10), the pressure acquisition device (10) is connected to the control device (5), for acquiring extraneous wind pressure signal.
4. multi fan tandem gas heater according to claim 1, which is characterized in that the air blower (3) and institute
Stating exhaust fan (4) is frequency conversion fan.
5. multi fan tandem gas heater according to claim 1, which is characterized in that air blower (3) setting
Have at least two, at least two air blowers (3) are arranged in series below the combustion chamber (1)；
And/or the exhaust fan (4) is provided at least two, at least two exhaust fans (4) are arranged in series in the smoke pipe
(2) lower section.
6. a kind of control method of multi fan tandem gas heater characterized by comprising
The work of the exhaust fan (4) below the air blower (3) and smoke pipe (2) below combustion chamber (1) is adjusted by control device (5)
Make revolving speed, to adapt to different size of extraneous wind pressure.
7. control method according to claim 6, which is characterized in that described to adjust combustion chamber (1) by control device (5)
The air blower (3) of lower section and the working speed of the exhaust fan (4) below smoke pipe (2) include:
Obtain fan delivery Q；
According to the sum of extraneous wind pressure and the system resistance of the gas heater, total working pressure P is obtained；
According to the total working pressure P and pressure distribution coefficient A of the air blower (3)Drum, the exhaust fan (4) pressure
Distribution coefficient AIt takes out, obtain the operating pressure P of the air blower (3)DrumWith the operating pressure P of the exhaust fan (4)It takes out；
According to the fan delivery Q and the operating pressure PDrumObtain the working speed w of the air blower (3)Drum, according to the wind
The fan delivery Q and operating pressure PIt takes outObtain the working speed w of the exhaust fan (4)It takes out；
With the working speed wDrumThe air blower (3) are run, with the working speed wIt takes outRun the exhaust fan (4).
8. control method according to claim 7, which is characterized in that the acquisition fan delivery Q includes: to calculate to need
Gas quantity, and according to the gas quantity and air-fuel ratio of calculating, calculate the fan delivery Q.
9. control method according to claim 8, which is characterized in that it is described calculate need gas quantity include:
Inflow temperature and leaving water temperature are acquired by temperature collecting device, flow of inlet water is acquired by flow harvester, according to
The inflow temperature, the leaving water temperature and the flow of inlet water calculate required thermic load；
According to the thermic load and the calorific value of combustion gas, the gas quantity of needs is calculated.
10. according to any control method of claim 7-9, which is characterized in that the pressure distribution coefficient ADrumWith it is described
Pressure distribution coefficient AIt takes outIt is identical.
11. according to any control method of claim 7-9, which is characterized in that the air blower (3) is provided at least two
It is a, and the pressure distribution coefficient A of at least two air blowers (3)DrumIt is not identical；
And/or the exhaust fan (4) is provided with the pressure distribution coefficient A of at least two, and at least two exhaust fans (4)It takes out
It is not identical.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811513574.3A CN109579278A (en) | 2018-12-11 | 2018-12-11 | A kind of multi fan tandem gas heater and control method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811513574.3A CN109579278A (en) | 2018-12-11 | 2018-12-11 | A kind of multi fan tandem gas heater and control method |
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| CN109579278A true CN109579278A (en) | 2019-04-05 |
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ID=65928276
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112460814A (en) * | 2020-11-10 | 2021-03-09 | 华帝股份有限公司 | Control method for wind speed self-adaption of direct-current variable-frequency gas water heater |
-
2018
- 2018-12-11 CN CN201811513574.3A patent/CN109579278A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112460814A (en) * | 2020-11-10 | 2021-03-09 | 华帝股份有限公司 | Control method for wind speed self-adaption of direct-current variable-frequency gas water heater |
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