CN204176923U - Premixed type gas water heater for heating - Google Patents
Premixed type gas water heater for heating Download PDFInfo
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- CN204176923U CN204176923U CN201420539478.7U CN201420539478U CN204176923U CN 204176923 U CN204176923 U CN 204176923U CN 201420539478 U CN201420539478 U CN 201420539478U CN 204176923 U CN204176923 U CN 204176923U
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Abstract
A kind of premixed type gas water heater for heating, comprise burner, blower fan, control circuit module, gas ratio valve, burner is provided with fire row, ignition electrode, blower fan, gas ratio valve is electrically connected with control circuit module, also comprise liquefied gas gas current feedback pin, natural gas gas current feedback pin, flame ion current detecting unit, liquefied gas gas current feedback pin, natural gas gas current feedback pin installs on the burner and its public connecting end is electrically connected with control circuit module by flame ion current detecting unit, control circuit module is according to liquefied gas gas current feedback pin, the summation regulating gas proportioning valve aperture of the ionic current values that natural gas gas current feedback pin detects and/or rotation speed of fan, when source of the gas is mutually changed between natural gas and liquefied gas, air-fuel ratio can be coordinated very well, burning load reaches user's request, the quality of the life of effective raising user.
Description
Technical field
The utility model relates to a kind of premixed type gas water heater for heating, comprises fully-premixed gas-heating water heater and atmospheric gas water heater for heating.
Background technology
Growing along with economy, the instructions for use of user to product is more and more higher, all want just can obtain as far as possible many use value by a product, such as, current gas-heating water heater mainly uses natural gas (clean gas), and the gas-heating water heater of liquefied gas needs customization, automatic switchover can not be carried out therebetween and use.When the gas pipeline of community breaks or occur situation that other need repairing, cause the premixed type gas water heater for heating air-fuel ratio of fixed gas source supply not coordinate very well, burning load does not reach user's request, has had a strong impact on the quality of the life of user.For overcoming above-mentioned defect, premixed type gas water heater for heating is improved.
Summary of the invention
Comprise burner, blower fan, control circuit module, gas ratio valve, burner is provided with fire row, ignition electrode, blower fan, gas ratio valve is electrically connected with control circuit module, also comprise liquefied gas gas current feedback pin, natural gas gas current feedback pin, flame ion current detecting unit, liquefied gas gas current feedback pin, natural gas gas current feedback pin installs on the burner and its public connecting end is electrically connected with control circuit module by flame ion current detecting unit, control circuit module is according to liquefied gas gas current feedback pin, the summation regulating gas proportioning valve aperture of the ionic current values that natural gas gas current feedback pin detects and/or rotation speed of fan.
Described flame ion current detecting unit comprises flame ion current input circuit, ac high-voltage produces circuit, exchange bleeder circuit, DC voltage divider circuit, filter circuit, flame ion current input circuit one end and gas current feed back pin and electrically connect, the flame ion current input circuit other end, ac high-voltage produce circuit and electrically connect with the input exchanging bleeder circuit respectively, the output exchanging bleeder circuit is electrically connected by the input of DC voltage divider circuit and filter circuit, and output and the control circuit module of filter circuit electrically connect.
Described control circuit module comprises MCU control unit, gas ratio valve regulation output circuit, and gas ratio valve regulation output circuit electrically connects with MCU control unit, gas ratio valve respectively.
Described control circuit module also comprises the fan speed regulation output control circuit, the rotation speed of fan feedback circuit that electrically connect with MCU control unit respectively, and fan speed regulation output control circuit, rotation speed of fan feedback circuit and blower fan electrically connect.
Described burner header board is provided with feedback pin installing hole, and liquefied gas gas current feedback pin, natural gas gas current feedback pin are installed on the burner respectively by feedback pin installing hole.
The height of described natural gas gas current feedback pin feeds back the height of pin lower than liquefied gas gas current.
The height of described natural gas gas current feedback pin feeds back the height 6-8mm of pin lower than liquefied gas gas current.
Described blower fan is AC variable speed blower fan.
Described gas ratio valve is stepper motor proportioning valve.
The utility model compares produced beneficial effect with background technology:
Liquefied gas gas current feedback pin is comprised because the utility model adopts on prior art basis, natural gas gas current feedback pin, flame ion current detecting unit, liquefied gas gas current feedback pin, natural gas gas current feedback pin installs on the burner and its public connecting end passes through the structure that flame ion current detecting unit is electrically connected with control circuit module, if liquefied gas gas current feedback pin, when the value of the gas current summation that natural gas gas current feedback pin detects is not in the normal range (NR) that combustion of natural gas is preset, then illustrate that source of the gas is converted into liquefied gas, and then the aperture of control circuit module regulating gas proportioning valve and/or the rotating speed of blower fan, in the liquefied gas normal range (NR) making the value of gas current summation reach default, when being converted into natural gas by liquefied gas, method is identical.Therefore when source of the gas is mutually changed between natural gas and liquefied gas, the water heater for heating energy aperture of regulating gas proportioning valve and/or the rotating speed of blower fan automatically, make air-fuel ratio coordinate very well, burning load reaches user's request, effectively improves the quality of the life of user.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
Fig. 2 is the enlarged drawing of burner 1 in Fig. 1;
Fig. 3 is that the circuit of Fig. 1 connects block diagram;
Fig. 4 is the connection block diagram of Fig. 1 Flame gas current detecting unit 51;
Fig. 5 is a kind of circuit connection diagram of Fig. 4;
Fig. 6 is the concrete connection layout of fan speed regulation output control circuit in Fig. 1, rotation speed of fan feedback circuit.
Detailed description of the invention
Referring to accompanying drawing 1, accompanying drawing 2, shown in accompanying drawing 3, the present embodiment comprises burner 1, blower fan 4, control circuit module 5, gas ratio valve 3, burner 1 is provided with fire row 2, ignition electrode, blower fan 4, gas ratio valve 3 is electrically connected with control circuit module 5, also comprise liquefied gas gas current feedback pin 11, natural gas gas current feedback pin 12, flame ion current detecting unit 51, liquefied gas gas current feedback pin 11, natural gas gas current feedback pin 12 installs on the burner and its public connecting end is electrically connected with control circuit module 5 by flame ion current detecting unit 51, control circuit module 5 is according to liquefied gas gas current feedback pin 11, summation regulating gas proportioning valve 3 aperture of the ionic current values that natural gas gas current feedback pin 12 detects and/or blower fan 4 rotating speed.
Fuel gas buring produces heat energy, the electronics in neutral gas atoms is made to obtain enough energy, thus atomic nucleus can be overcome free electron is become to its gravitation, simultaneously neutral atom is owing to losing portions of electronics thus positively charged, and this process making neutral molecule or atom release electronics form cation is called gas ionization.Now, if add a DC electric field between flame and burner, charged particle is moved along direction of an electric field, and cation moves to cathode direction, and electronics and the motion of anion anode direction, will form gas current.
Because under different fired states, the temperature of flame is not identical, flame temperature is higher, in unit interval inherent electric field, the charged particle of movement is more, namely charged ion concentration is larger, electric current is more obvious, and flame temperature is lower, and in unit interval inherent electric field, the charged particle of movement is fewer, namely charged ion concentration is less, and electric current is more weak.
When air-fuel ratio is excessive, additional air can take away heat, can dilute charged ion concentration; When air-fuel ratio is too small, burn insufficient, combustion process also fails to produce abundant charged particle.
Gas component in the utility model refers to composition and the content of combustion gas, and combustion gas component changes, and also can think the change of source of the gas, namely source of the gas is changed to liquefied gas by natural gas, or is changed to natural gas by liquefied gas.For premixed type gas water heater for heating, when source of the gas changes, if gas ratio valve 3 can not adjust accordingly, then combustion gas just can not realize effective premix with air, will produce adverse influence to burning.
Gas-heating water heater designer logical to gas-heating water heater under different burning load during normal combustion ionic current values and smoke components take multiple measurements, the range of normal value of gas current when determining that the range of normal value of gas current during combustion of natural gas, liquefied gas burn, and write these ionic current values scopes as automatically controlled program and be input in control circuit module 5.In order to judge whether source of the gas is changed more accurately in the utility model, ionic current values scope when source of the gas is also converted to suddenly liquefied gas by natural gas by gas-heating water heater designer, the liquefied gas ionic current values scope filled suddenly when being changed to natural gas are write as automatically controlled program and are input in control circuit module 5.Namely preset four gas current value ranges in control circuit module 5 in the present embodiment, ionic current values scope (being called for short D3) when ionic current values scope (being called for short D1) when being respectively natural gas normal combustion, liquefied gas fill suddenly ionic current values scope (being called for short D2), liquefied gas normal combustion when being changed to natural gas, liquefied gas fill suddenly the ionic current values scope (being called for short D4) when being changed to natural gas.
Further, referring to accompanying drawing 4, accompanying drawing 5, described flame ion current detecting unit 51 comprises flame ion current input circuit 511, ac high-voltage produces circuit 515, exchange bleeder circuit 512, DC voltage divider circuit 513, filter circuit 514, flame ion current input circuit 511 one end and gas current feed back pin 2 and electrically connect, flame ion current input circuit 511 other end, exchange bleeder circuit 512 to electrically connect with the input exchanging bleeder circuit 512 respectively, the output exchanging bleeder circuit 512 is electrically connected by the input of DC voltage divider circuit 513 with filter circuit 514, output and the control circuit module 5 of filter circuit 514 electrically connect.
Referring to accompanying drawing 3, described control circuit module 5 comprises MCU control unit, gas ratio valve regulation output circuit, and gas ratio valve regulation output circuit electrically connects with MCU control unit, gas ratio valve 3 respectively.When needs regulate flame ion electric current, MCU control unit passes through gas ratio valve regulation output circuit by the signal of telecommunication to gas ratio valve 3, the aperture of adjustment gas ratio valve 3.
Referring to accompanying drawing 6, described control circuit module 5 also comprises the fan speed regulation output control circuit, the rotation speed of fan feedback circuit that electrically connect with MCU control unit respectively, and fan speed regulation output control circuit, rotation speed of fan feedback circuit and blower fan 4 electrically connect.When needs regulate flame ion electric current, MCU control unit passes through fan speed regulation output control circuit by signal of telecommunication fan 4, the wind speed of adjustment blower fan 4, then the signal feedback that received by blower fan 4 of rotation speed of fan feedback circuit is to MCU control unit, judges whether blower fan 4 receives the complete signal of telecommunication.
Namely control circuit module 5 changes air-fuel ratio by the rotating speed of regulating gas proportioning valve 3 and/or blower fan 4, thus the summation of the flame ion current value that liquefied gas gas current feeds back pin 11, natural gas gas current feedback pin 12 detects is maintained within the scope of D1, D3.Can regulating gas proportioning valve and then control into gas quantity separately, also blower fan 4 rotating speed can be regulated separately to regulate into air capacity, if the flame ion current value detected and D1, D3 value deviation preset more greatly can while regulating gas proportioning valve and blower fan 4 rotating speed, with the fastest speed by air-fuel ratio regulation to optimum state.
Described burner 1 header board is provided with feedback pin installing hole, and liquefied gas gas current feedback pin 11, natural gas gas current feedback pin 12 are arranged on burner 1 respectively by feedback pin installing hole.The ignition electrode of gas-heating water heater is also set on burner 1 header board, and three kinds of pins are all arranged on burner 1 header board, neatly unification, is convenient to install.
The height at the internal flame top when height of natural gas gas current feedback pin 12 depends on combustion of natural gas, its current value is the strongest, and the value of feedback drawn is stablized; When the height of liquefied gas gas current feedback pin 11 depends on that natural gas switches to liquefied gas instantaneously, the height at the internal flame top of flame during flame height sudden change after-combustion.Relative to liquefied gas burning, the calorific value produced in unit are during combustion of natural gas is lower, and flame height is also lower, so the height of described natural gas gas current feedback pin 12 is lower than the height of liquefied gas gas current feedback pin 11.If natural gas gas current feedback pin 12 is higher than fire output hole 8-10mm, liquefied gas gas current feedback pin 11 is higher than fire output hole 14-18mm, comparatively speaking, the height of described natural gas gas current feedback pin 12 feeds back the height 6-8mm of pin 11 lower than liquefied gas gas current.
Further, described blower fan 4 is AC variable speed blower fan, AC variable speed blower fan has wind speed feedback terminal, and the change with load diminishes greatly the rotational speed regulation of carrying out in certain limit, and cost is lower, easy for installation.
Preferably, described gas ratio valve 3 is stepper motor proportioning valve, and stepper motor proportioning valve controls the size of its valve opening by control circuit module 5, can specifically control to step number, controls more accurately reliable.
During work, when source of the gas is natural gas, natural gas gas current feedback pin 12 detects flame ion electric current, and liquefied gas gas current feedback pin 11 does not detect ionic flame electric current, now the flame ion current value that natural gas gas current feedback pin 12 detects constantly is passed to control circuit module 5 by flame ion current detecting unit 51, the actual value detected and the D1 preset constantly compare by control circuit module 5, if the actual value detected is in D1 scope combustion, then illustrate that combustion of natural gas is normal, do not need to regulate, when source of the gas is converted to suddenly liquefied gas by natural gas, natural gas gas current feedback pin 12, liquefied gas gas current feedback pin 11 all detects flame ion electric current, if when the summation that flame ion current detecting unit 51 passes to the ionic current values of control circuit module 5 is in D2, control circuit module 5 perceives source of the gas and changes, control circuit module 5 outputs signal to gas ratio valve 3 and/or blower fan 4 regulates, combustion gas is mated again with AIR Proportional, until the liquefied gas gas current feedback pin 11 that flame ion current detecting unit 51 detects, the summation of the ionic current values of natural gas gas current feedback pin 12 is within the scope of D3.
Same method, when source of the gas is converted to natural gas by liquefier suddenly, flame ion current detecting unit 51 passes to the summation of the ionic current values of control circuit module 5 within the scope of D4, control circuit module 5 perceives source of the gas and changes, control circuit module 5 outputs signal to gas ratio valve 3 and/or blower fan 4 regulates, combustion gas is mated again with AIR Proportional, until the liquefied gas gas current feedback pin 11 that flame ion current detecting unit 51 detects, the summation of the ionic current values of natural gas gas current feedback pin 12 is within the scope of D1, realize normal combustion.
The utility model is when source of the gas changes, the gas-heating water heater energy aperture of regulating gas proportioning valve 3 and/or the rotating speed of blower fan 4 automatically, fast automatic air and combusted proportion to be regulated, make combustion gas and AIR Proportional be adjusted to new air-fuel ratio, and then ensure the normal use of water heater for heating.Gas-heating water heater of the present utility model can realize the automatic conversion between natural gas and liquefied gas, other plenum systems can be freely replaced by when a kind of plenum system can not use, ensure that user can enjoy enough heating in the winter of cold, effectively improve the quality of the life of user.
Though the present embodiment Fig. 1 is atmospheric burning type gas-heating water heater (i.e. half premixed type gas water heater for heating), the technical solution of the utility model goes for fully pre-mixing gas combustion water heater for heating equally.
Claims (10)
1. a premixed type gas water heater for heating, comprise burner (1), blower fan (4), control circuit module (5), gas ratio valve (3), burner (1) is provided with fire row (2), ignition electrode, blower fan (4), gas ratio valve (3) is electrically connected with control circuit module (5), characterized by further comprising liquefied gas gas current feedback pin (11), natural gas gas current feedback pin (12), flame ion current detecting unit (51), liquefied gas gas current feedback pin (11), natural gas gas current feedback pin (12) is installed on the burner and its public connecting end is electrically connected with control circuit module (5) by flame ion current detecting unit (51), control circuit module (5) is according to liquefied gas gas current feedback pin (11), summation regulating gas proportioning valve (3) aperture of the ionic current values that natural gas gas current feedback pin (12) detects and/or blower fan (4) rotating speed.
2. premixed type gas water heater for heating according to claim 1, it is characterized in that described flame ion current detecting unit (51) comprises flame ion current input circuit (511), ac high-voltage produces circuit (515), exchange bleeder circuit (512), DC voltage divider circuit (513), filter circuit (514), flame ion current input circuit (511) one end and gas current feed back pin (2) and electrically connect, flame ion current input circuit (511) other end, ac high-voltage produces circuit (512) and electrically connects with the input exchanging bleeder circuit (512) respectively, the output exchanging bleeder circuit (512) is electrically connected by the input of DC voltage divider circuit (513) with filter circuit (514), output and the control circuit module (5) of filter circuit (514) electrically connect.
3. premixed type gas water heater for heating according to claim 1 and 2, it is characterized in that described control circuit module (5) comprises MCU control unit, gas ratio valve regulation output circuit, gas ratio valve regulation output circuit electrically connects with MCU control unit, gas ratio valve (3) respectively.
4. premixed type gas water heater for heating according to claim 1 and 2, it is characterized in that described control circuit module (5) also comprises fan speed regulation output control circuit, the rotation speed of fan feedback circuit electrically connected with MCU control unit respectively, fan speed regulation output control circuit, rotation speed of fan feedback circuit and blower fan (4) electrically connect.
5. premixed type gas water heater for heating according to claim 3, it is characterized in that described control circuit module (5) also comprises fan speed regulation output control circuit, the rotation speed of fan feedback circuit electrically connected with MCU control unit respectively, fan speed regulation output control circuit, rotation speed of fan feedback circuit and blower fan (4) electrically connect.
6. premixed type gas water heater for heating according to claim 1 and 2, it is characterized in that described burner (1) header board is provided with feedback pin installing hole, liquefied gas gas current feedback pin (11), natural gas gas current feedback pin (12) are arranged on burner (1) respectively by feedback pin installing hole.
7. premixed type gas water heater for heating according to claim 1 and 2, is characterized in that the height of height lower than liquefied gas gas current feedback pin (11) of described natural gas gas current feedback pin (12).
8. premixed type gas water heater for heating according to claim 7, is characterized in that the height 6-8mm of height lower than liquefied gas gas current feedback pin (11) of described natural gas gas current feedback pin (12).
9. premixed type gas water heater for heating according to claim 1 and 2, is characterized in that described blower fan (4) is AC variable speed blower fan.
10. premixed type gas water heater for heating according to claim 1 and 2, is characterized in that described gas ratio valve (3) is stepper motor proportioning valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420539478.7U CN204176923U (en) | 2014-09-19 | 2014-09-19 | Premixed type gas water heater for heating |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420539478.7U CN204176923U (en) | 2014-09-19 | 2014-09-19 | Premixed type gas water heater for heating |
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| CN204176923U true CN204176923U (en) | 2015-02-25 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201420539478.7U Active CN204176923U (en) | 2014-09-19 | 2014-09-19 | Premixed type gas water heater for heating |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104990268A (en) * | 2015-07-14 | 2015-10-21 | 佛山市顺德万和电气配件有限公司 | Blockage protection method for feed pipe and exhaust pipe of fully-premixed gas heating water heater |
| CN105650693A (en) * | 2016-03-30 | 2016-06-08 | 广东万和电气有限公司 | Self-adaptive gas stove and control method thereof |
| CN107270703A (en) * | 2017-08-18 | 2017-10-20 | 安新县华昌合金厂 | A kind of natural gas melting furnace |
| CN107461934A (en) * | 2017-08-23 | 2017-12-12 | 广州迪森家居环境技术有限公司 | A kind of condensing type wall-mounted furnace and its adjusting method |
| CN110779214A (en) * | 2019-09-29 | 2020-02-11 | 华帝股份有限公司 | Control method of gas water heater |
| CN111981479A (en) * | 2020-08-27 | 2020-11-24 | 深圳市凌隽商贸有限公司 | Control method and device for premix burner |
| CN112696829A (en) * | 2021-01-07 | 2021-04-23 | 深圳市合信达控制系统有限公司 | Gas self-adaptive control method and device and gas heating stove |
-
2014
- 2014-09-19 CN CN201420539478.7U patent/CN204176923U/en active Active
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104990268A (en) * | 2015-07-14 | 2015-10-21 | 佛山市顺德万和电气配件有限公司 | Blockage protection method for feed pipe and exhaust pipe of fully-premixed gas heating water heater |
| CN104990268B (en) * | 2015-07-14 | 2017-10-31 | 广东万和热能科技有限公司 | Fully pre-mixing gas combustion water heater for heating blocks guard method to blast pipe |
| CN105650693A (en) * | 2016-03-30 | 2016-06-08 | 广东万和电气有限公司 | Self-adaptive gas stove and control method thereof |
| CN107270703A (en) * | 2017-08-18 | 2017-10-20 | 安新县华昌合金厂 | A kind of natural gas melting furnace |
| CN107461934A (en) * | 2017-08-23 | 2017-12-12 | 广州迪森家居环境技术有限公司 | A kind of condensing type wall-mounted furnace and its adjusting method |
| CN110779214A (en) * | 2019-09-29 | 2020-02-11 | 华帝股份有限公司 | Control method of gas water heater |
| CN110779214B (en) * | 2019-09-29 | 2021-04-27 | 华帝股份有限公司 | Control method of gas water heater |
| CN111981479A (en) * | 2020-08-27 | 2020-11-24 | 深圳市凌隽商贸有限公司 | Control method and device for premix burner |
| CN111981479B (en) * | 2020-08-27 | 2023-03-17 | 深圳市凌隽商贸有限公司 | Control method and device for premix burner |
| CN112696829A (en) * | 2021-01-07 | 2021-04-23 | 深圳市合信达控制系统有限公司 | Gas self-adaptive control method and device and gas heating stove |
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