CN110454988A - A kind of gas heater with blast gauge - Google Patents
A kind of gas heater with blast gauge Download PDFInfo
- Publication number
- CN110454988A CN110454988A CN201910719220.2A CN201910719220A CN110454988A CN 110454988 A CN110454988 A CN 110454988A CN 201910719220 A CN201910719220 A CN 201910719220A CN 110454988 A CN110454988 A CN 110454988A
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- CN
- China
- Prior art keywords
- port
- pressure
- controller
- fan
- gas heater
- 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.)
- Pending
Links
- 239000007789 gas Substances 0.000 claims abstract description 56
- 239000003517 fume Substances 0.000 claims abstract description 25
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 55
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims description 8
- 239000000567 combustion gas Substances 0.000 claims description 8
- 239000003546 flue gas Substances 0.000 claims description 8
- 238000009434 installation Methods 0.000 claims description 4
- 238000007599 discharging Methods 0.000 abstract description 3
- 238000010438 heat treatment Methods 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000003044 adaptive effect Effects 0.000 description 1
- 238000007792 addition Methods 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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
- F24H9/20—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
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F15/00—Details of, or accessories for, apparatus of groups G01F1/00 - G01F13/00 insofar as such details or appliances are not adapted to particular types of such apparatus
- G01F15/18—Supports or connecting means for meters
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L13/00—Devices or apparatus for measuring differences of two or more fluid pressure values
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Thermal Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Fluid Mechanics (AREA)
- Regulation And Control Of Combustion (AREA)
Abstract
The invention discloses a kind of gas heater with blast gauge, including heat exchanger, fume extractor and controller, the fume extractor includes exhaust fume collecting hood, DC fan, blast gauge, negative pressure wind-pressure tube and positive pressure wind-pressure tube.The exhaust fume collecting hood is mounted at the top of heat exchanger, the DC fan air inlet is connected to for discharging fume with exhaust fume collecting hood, negative port and positive port are installed in the air outlet of DC fan, the negative port and positive port pass through negative pressure wind-pressure tube respectively and positive pressure wind-pressure tube is connected to blast gauge, two different pressure act on blast gauge and form pressure difference, the blast gauge is connected with controller, the controller is connected with DC fan, and the controller automatically adjusts the revolving speed of DC fan according to the pressure difference.The gas heater Wind-Pressure Resistance can automatically adjust rotation speed of fan according to air outlet drag size makes gas heater flameholding, and the use of the gas heater is not influenced by locating ambient enviroment.
Description
Technical field
The present invention relates to the manufacturing fields of gas heater, and in particular to a kind of gas heater with blast gauge.
Background technique
Gas heater is also known as gas water-heating furnace, is that by way of combustion heating, heat is passed using combustion gas as fuel
It is delivered in the cold water for flowing through heat exchanger, to reach a kind of gas appliance for preparing hot water purpose.The basic principle is that: combustion gas heat
Hydrophone opens hot water tap, and water flow is flowed into from water inlet interface, flows to the heating pipe in heat exchanger by water flow sensor,
It is flowed out again from water outlet mouthpiece.Feedwater flow one signal of sensor when water flow passes through water flow sensor, water flow sensor are given
Controller signals, one signal of controller fan rotate blower, controller control igniting needle-discharging while blower rotates,
Then controller control gas ratio valve is opened, and igniting needle-discharging lights combustion gas, i.e., heats to water flow.
Common AC blower fan water heater is equipped with blast switch in the prior art, which only has switching function, when out
When air port blocking or wind speed are gradually increased, since the constant water heater smoke evacuation of alternating-current fan rotation speed is unsmooth, water heater is made to burn
Lack of air causes insufficient performance for influencing water heater of burning.Reach setting when air outlet blocking or wind speed continue to increase
When value, blast switch is automatically closed, and water heater protects auto extinguishing.Only remove tamper or waited extraneous wind speed small with
After could use.The gas heater is affected by wind speed, is unable to Wind-Pressure Resistance, inconvenient to use.
The revolving speed of conventional DC blower water heater blower can change automatically in the prior art, and extraneous wind speed increases, outlet air
Mouth resistance increases, and DC fan increases revolving speed automatically, and water heater capacity is kept to stablize.Conventional DC blower water heater blower turns
Speed is set with a limiting value, and when air outlet resistance is gradually increased, when rotation speed of fan continues to increase to limiting value, water heater is automatic
It is flame-out to close.In highlands due to height above sea level, rarefaction of air, when air outlet resistance increases, water heater revolving speed increases, compared to flat
Original area more easily reachs rev limit value, to start blowout protection.The gas heater is affected by local environment.
Summary of the invention
The purpose of the present invention is to provide a kind of gas heaters with blast gauge, which being capable of root
Make gas heater flameholding according to air outlet drag size automatic adjustment rotation speed of fan, and the use of the gas heater is not
It is influenced by locating ambient enviroment.
To achieve the above object, the technical solution that the present invention uses is:
A kind of gas heater with blast gauge, including shell, installation heat exchanger inside housings, for handing over heat
Burner, fume extractor and the controller that parallel operation is heated, the fume extractor include exhaust fume collecting hood, DC fan, blast gauge,
Negative pressure wind-pressure tube and positive pressure wind-pressure tube, the exhaust fume collecting hood are mounted at the top of heat exchanger for collecting flue gas, the DC fan
Air inlet is connected to for the flue gas in exhaust fume collecting hood to be discharged with exhaust fume collecting hood, is equipped with negative port in the air outlet of DC fan
And positive port, the negative port and positive port passes through negative pressure wind-pressure tube respectively and positive pressure wind-pressure tube is connected to blast gauge,
Two different pressure act on blast gauge and form pressure difference, and the blast gauge is connected with controller, the controller and direct current
Blower is connected, and the controller automatically adjusts the revolving speed of DC fan according to the pressure difference.
Preferably, the straight flange where the T-shaped tubulose of the negative port, the T shape tubulose first port and second port
Parallel with DC fan air outlet airflow direction, the T shape tubulose third port is connected to negative pressure wind-pressure tube.
Preferably, the T shape tubulose first port is flared.
Preferably, the L-shaped tubulose of the positive port, the straight flange where the L shape tubulose Single port go out with DC fan
Air port airflow direction is parallel, and the L shape tubulose another port is connected to positive pressure wind-pressure tube.
Preferably, further include gas ratio valve, the shell be equipped with intake interface, described gas ratio valve one end with into
Gas orifice, the other end are installed on the burner, and combustion gas enters through gas ratio valve from intake interface and enters burner.
Preferably, further include water flow sensor, water inlet interface and water outlet mouthpiece, the water flow are additionally provided on the shell
Quantity sensor one end is connected to water inlet interface, and the other end is connected to by water pipe with one end of heat exchanger, the heat exchanger
The other end is connected to by water pipe with water outlet mouthpiece.
Preferably, the controller is connected with gas ratio valve, and the controller is used to control the switch of gas ratio valve.
Preferably, the controller is connected with water flow sensor, and the water flow sensor sends water-flow signal to
Controller.
It preferably, further include ignition electrode, the ignition electrode is mounted on burner internal and is connected with controller.
Compared with prior art the invention has the benefit that
(1) gas heater can automatically adjust rotation speed of fan according to the size of air outlet resistance, make gas heater
Flameholding, the beneficial effect with Wind-Pressure Resistance.
(2) pressure disc type blast gauge is installed in the gas heater, passes through the positive pressure side being mounted in fan outlet
Mouth and two different pressure of negative port detection act on blast gauge and form pressure difference, have circuit module, energy in blast gauge
Different pressure differences is enough converted to different voltage signals and sends controller to, controller automatically controls straight according to voltage signal
Flow fan revolving speed.The size heel pressure difference of DC fan revolving speed has relationship, not by the shadow of working environment locating for gas heater
It rings.It overcomes conventional DC blower gas heater to be promoted fastly in high altitude localities using rotation speed of fan, is easy blowout protection
Disadvantage.
(3) first port in the gas heater negative port is flared, and air-flow can be made quickly through negative pressure end
Mouthful, keep negative port and positive port pressure difference more obvious.
Detailed description of the invention
Fig. 1 is overall structure of the present invention.
Fig. 2 is negative port and positive port mounting structure schematic diagram of the present invention.
Specific embodiment
Detailed description of the technical solution of the present invention with reference to the accompanying drawing:
In conjunction with attached drawing 1 to 2, a kind of gas heater with blast gauge, the heat including shell 1, installation inside housings is handed over
Parallel operation 2, burner 3, fume extractor and controller 4.Specific burner 3 is connected to heat exchanger 2 is mounted on 1 inner bottom of shell
Corresponding position is held, for burner 3 for heating to heat exchanger 2, heat exchanger 2 is for cold water is heated to be hot water.Its
Middle fume extractor includes exhaust fume collecting hood 5, DC fan 6, pressure disc type blast gauge 7, negative pressure wind-pressure tube 8 and positive pressure wind-pressure tube 9.Specifically
Exhaust fume collecting hood 5 be mounted on for collecting the flue gas of the generation of burner 3 at the top of heat exchanger 2, DC fan 6 is mounted in shell 1
Portion top, 6 air inlet of DC fan are connected to the discharge of the flue gas for collecting exhaust fume collecting hood 5 with exhaust fume collecting hood 5.In DC fan
Air outlet 12 in negative port 10 and positive port 11 are installed, specific negative port 10 and positive port 11 pass through respectively
Negative pressure wind-pressure tube 8 and positive pressure wind-pressure tube 9 are connected to pressure disc type blast gauge 7, and two different pressure act on blast gauge and formed
Pressure difference, pressure disc type blast gauge 7 use the prior art, and there is circuit module pressure difference can be converted into voltage letter for inside
Number.The pressure disc type blast gauge 7 is connected with controller 4, sends voltage signal to controller 4.The controller 4 and direct current
Blower 6 is connected, and specific controller 4 transmits different voltage signals according to pressure disc type blast gauge 7 and automatically adjusts DC fan 6
Revolving speed.
Wherein, the T-shaped tubulose of negative port 10, specific T shape tubulose first port 13 as shown in Figure 2 and second port 14
The straight flange at place is parallel with 12 flue gas stream direction of DC fan air outlet, and T shape tubulose third port 15 and negative pressure wind-pressure tube 8 connect
It is logical.Specific T shape tubulose first port 13 is flared, is more advantageous to the inflow of air-flow in this way.The positive port 11 is L-shaped
Tubulose, the straight flange where specific L shape tubulose a port is parallel with 12 airflow direction of DC fan air outlet, and L shape tubulose is another
Single port is connected to positive pressure wind-pressure tube 9.
Wherein, the flue gas that burner 3 generates by exhaust fume collecting hood 5 and DC fan air outlet 12 outwardly discharge process,
Air-flow, which is flowed by the first port 13 in negative port 10 from second port 14 and third port 15, to flow out, while air-flow is from just
The a port of pressure side mouth 11 flows into the outflow of another port, due to the T-shaped tubulose of negative port 10, first port 13 and second
Port 14 is connected to, and air-flow is greater than the flow velocity in positive port 11 in the flow velocity of negative port 10, due to the big local pressure of flow velocity
It is small, so the pressure of negative port 10 is less than positive port 11, so forming pressure between negative port 10 and positive port 11
Difference acts on pressure disc type blast gauge 7.More specifically, after air outlet windage becomes larger, the stream of 10 air-flow of negative port is hindered
Speed, so the pressure difference between negative port 10 and positive port 11 becomes smaller, otherwise pressure difference becomes larger, and corresponding controller 4 is certainly
The dynamic revolving speed for adjusting DC fan 6.
The gas heater can automatically adjust rotation speed of fan according to the size of air outlet resistance, and gas heater is made to burn
Stablize, the beneficial effect with Wind-Pressure Resistance.Pressure disc type blast gauge 7 is installed in the gas heater simultaneously, by being mounted on
Two different pressure that negative port 10 and positive port 11 in DC fan air outlet 12 detect act on blast gauge shape
At pressure difference, there is circuit module in blast gauge, different pressure differences can be converted to different voltage signals and send control to
Device 4, controller 4 automatically control 6 revolving speed of DC fan according to voltage signal.The size heel pressure difference of 6 revolving speed of DC fan has
Relationship is not influenced by working environment locating for gas heater.Overcome conventional DC blower gas heater in High aititude
The shortcomings that area is promoted fastly using rotation speed of fan, is easy blowout protection.
Further, which further includes gas ratio valve 16, and intake interface 17 is equipped on shell 1, described
16 one end of gas ratio valve is connected to intake interface 17, and the other end is mounted on burner 3, and combustion gas enters logical from intake interface 17
It crosses gas ratio valve 16 and enters burner 3.
Further, further include water flow sensor 18, water inlet interface 19 and water outlet mouthpiece 20 be additionally provided on shell 1,
Described 18 one end of water flow sensor is connected to water inlet interface 19, and the other end is connected to by water pipe with one end of heat exchanger 2, institute
The other end for stating heat exchanger 2 is connected to by water pipe with water outlet mouthpiece 20.
Further, controller 4 is connected with gas ratio valve 16, and the controller 4 is for controlling gas ratio valve 16
Switch.Controller 4 is connected with water flow sensor 18, and the water flow sensor 18 sends water-flow signal to controller 4.
Further, which further includes ignition electrode 21, and the ignition electrode 21 is mounted on 3 inside of burner and control
Device 4 processed is connected.When controller 4 has detected water flow flowing, controller 4 makes 6 turns of DC fan to 6 one signals of DC fan
Dynamic, controller 4 controls ignition electrode 21 and discharges while DC fan 6 rotates, and then controller 4 controls gas ratio valve 16 and beats
It opens, combustion gas in burner 3 is lighted in the electric discharge of ignition electrode 21 heats heat exchanger 2, i.e., heats to water flow.
Route and pipeline cloth inside gas heater of the present invention between each specific installation site of component and each component
Adaptive change can be done according to the concrete model of gas heater by setting.
Certainly, the above description is not a limitation of the present invention, and the present invention is also not limited to the example above, this technology neck
The variations, modifications, additions or substitutions that the technical staff in domain is made within the essential scope of the present invention also should belong to of the invention
Protection scope.
Claims (9)
1. a kind of gas heater with blast gauge, which is characterized in that including shell, installation heat exchanger inside housings,
Burner, fume extractor and controller for being heated to heat exchanger, the fume extractor include exhaust fume collecting hood, direct current wind
Machine, blast gauge, negative pressure wind-pressure tube and positive pressure wind-pressure tube, the exhaust fume collecting hood are mounted on for collecting flue gas at the top of heat exchanger, institute
It states DC fan air inlet to be connected to exhaust fume collecting hood for the flue gas in exhaust fume collecting hood to be discharged, be installed in the air outlet of DC fan
There are negative port and positive port, the negative port and positive port pass through negative pressure wind-pressure tube and positive pressure wind-pressure tube and wind respectively
Pressure meter connection, two different pressure act on blast gauge and form pressure difference, and the blast gauge is connected with controller, the control
Device is connected with DC fan, and the controller automatically adjusts the revolving speed of DC fan according to the pressure difference.
2. a kind of gas heater with blast gauge according to claim 1, which is characterized in that the negative port is in T
Shape tubulose, the T shape tubulose first port and the straight flange where second port are parallel with DC fan air outlet airflow direction, institute
T shape tubulose third port is stated to be connected to negative pressure wind-pressure tube.
3. a kind of gas heater with blast gauge according to claim 2, which is characterized in that the T shape tubulose first
Port is flared.
4. a kind of gas heater with blast gauge according to claim 1, which is characterized in that the positive port is in L
Shape tubulose, the straight flange where the L shape tubulose Single port is parallel with DC fan air outlet airflow direction, and the L shape tubulose is another
Single port is connected to positive pressure wind-pressure tube.
5. a kind of gas heater with blast gauge according to claim 1, which is characterized in that further include gas proportion
Valve, the shell are equipped with intake interface, and described gas ratio valve one end is connected to intake interface, and the other end is mounted on burner
On, combustion gas enters through gas ratio valve from intake interface and enters burner.
6. a kind of gas heater with blast gauge according to claim 5, which is characterized in that further include water flow sensing
Device is additionally provided with water inlet interface and water outlet mouthpiece on the shell, and described water flow sensor one end is connected to water inlet interface, another
End is connected to by water pipe with one end of heat exchanger, and the other end of the heat exchanger is connected to by water pipe with water outlet mouthpiece.
7. a kind of gas heater with blast gauge according to claim 6, which is characterized in that the controller and combustion gas
Proportioning valve is connected, and the controller is used to control the switch of gas ratio valve.
8. a kind of gas heater with blast gauge according to claim 7, which is characterized in that the controller and water flow
Quantity sensor is connected, and the water flow sensor sends water-flow signal to controller.
9. any one gas heater with blast gauge described in -8 according to claim 1, which is characterized in that further include igniting
Needle, the ignition electrode are mounted on burner internal and are connected with controller.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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CN201910719220.2A CN110454988A (en) | 2019-08-06 | 2019-08-06 | A kind of gas heater with blast gauge |
Applications Claiming Priority (1)
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CN201910719220.2A CN110454988A (en) | 2019-08-06 | 2019-08-06 | A kind of gas heater with blast gauge |
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CN110454988A true CN110454988A (en) | 2019-11-15 |
Family
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CN201910719220.2A Pending CN110454988A (en) | 2019-08-06 | 2019-08-06 | A kind of gas heater with blast gauge |
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Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN110822701A (en) * | 2019-11-21 | 2020-02-21 | 青岛澳柯玛智能家居有限公司 | Gas water heater with water leakage alarm system |
CN112432676A (en) * | 2020-11-02 | 2021-03-02 | 广东万家乐燃气具有限公司 | Air quantity detection and adjustment device, water heater and constant air quantity detection and adjustment method |
CN113137757A (en) * | 2020-01-20 | 2021-07-20 | 芜湖美的厨卫电器制造有限公司 | Combustion device, water heater and control method of water heater |
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CN209027109U (en) * | 2018-08-29 | 2019-06-25 | 宁波方太厨具有限公司 | A kind of gas heater reminded with carbon distribution |
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CN112432676A (en) * | 2020-11-02 | 2021-03-02 | 广东万家乐燃气具有限公司 | Air quantity detection and adjustment device, water heater and constant air quantity detection and adjustment method |
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