CN110207397B - Fan step speed regulation circuit, fan assembly using same and gas water heater - Google Patents
Fan step speed regulation circuit, fan assembly using same and gas water heater Download PDFInfo
- Publication number
- CN110207397B CN110207397B CN201811515154.9A CN201811515154A CN110207397B CN 110207397 B CN110207397 B CN 110207397B CN 201811515154 A CN201811515154 A CN 201811515154A CN 110207397 B CN110207397 B CN 110207397B
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- fan
- assembly
- water heater
- relay
- water
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 81
- 230000001105 regulatory effect Effects 0.000 claims abstract description 15
- 238000004804 winding Methods 0.000 claims abstract description 12
- 239000007789 gas Substances 0.000 claims description 27
- 238000002485 combustion reaction Methods 0.000 claims description 25
- 238000001514 detection method Methods 0.000 claims description 11
- 239000000779 smoke Substances 0.000 claims description 7
- 238000010438 heat treatment Methods 0.000 claims description 6
- 239000002912 waste gas Substances 0.000 claims description 3
- 239000000284 extract Substances 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 4
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 3
- 239000002737 fuel gas Substances 0.000 description 3
- 238000010079 rubber tapping Methods 0.000 description 3
- 229910052710 silicon Inorganic materials 0.000 description 3
- 239000010703 silicon Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 239000000446 fuel Substances 0.000 description 2
- 238000007599 discharging Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 239000004065 semiconductor 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
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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 discloses a fan stepping speed regulation circuit which comprises a power transformer T and a relay switching module K, wherein the input side of the power transformer T is connected with the relay switching module K, and the output end of the relay switching module K is connected with a fan; the primary winding of the power transformer T extracts at least one tap end T1, and the tap end T1 is connected with the relay switching module K and is used for outputting different voltages through the relay switching module K, wherein the different voltages correspond to different rotating speeds of the fan; the invention also discloses a fan assembly and a gas water heater; according to the invention, the primary winding of the power transformer is tapped, different voltages are output, the single-gear fan is driven by switching through the plurality of relays, and the multi-gear wind speed of the fan in the gas water heater is regulated.
Description
Technical Field
The invention belongs to the technical field of gas water heaters, and particularly relates to a fan stepping speed regulating circuit, a fan assembly using the same and a gas water heater.
Background
The gas water heater works in different load states and has different requirements on the air quantity, namely, the fan is required to be capable of adjusting the speed according to the requirements.
At present, the fan speed regulation method of the gas water heater mainly comprises two modes: firstly, the motor winding is subjected to tap type speed regulation, the requirements on the motor manufacturing process are high, the windings and the joints are more, the winding mode is complex, the quality reliability is low, and the inter-turn insulation performance is poor; secondly, the silicon controlled chopper is used for regulating speed, the silicon controlled chopper is used for outputting driving voltage with adjustable effective value, the single-speed fan is driven for regulating speed, abrupt voltage and current are generated in the mode, the mechanical noise of the motor is caused, larger electromagnetic interference is radiated, and compared with a mechanical switch, the silicon controlled chopper belongs to a semiconductor device, and has lower anti-surge capability and is easy to damage.
Disclosure of Invention
The invention aims to provide a stepping speed regulating circuit of a fan, which realizes multi-gear wind speed regulation by tapping a primary winding of a power transformer.
It is another object of the present invention to provide a fan assembly with the fan stepper speed circuit described above.
Another object of the present invention is to provide a gas water heater with the above-described fan assembly.
The technical scheme adopted by the invention is that the fan stepping speed regulating circuit comprises a power transformer T and a relay switching module K, wherein the output side of the power transformer T is connected with the relay switching module K, and the output end of the relay switching module K is connected with a fan; the primary winding of the power transformer T is provided with at least one tap end T1, and the tap end T1 is connected with the relay switching module K and used for outputting different voltages through the relay switching module K, wherein the different voltages correspond to different rotating speeds of the fan.
The present invention is also characterized in that,
the relay switching module K comprises a first relay K1 and a second relay K2, a live wire end of the power transformer T is connected with a normally open contact of the second relay K2, a zero wire end of the power transformer T is connected with normally closed contacts of the first relay K1 and the second relay K2, and a tap end T1 is connected with the normally open contact of the first relay K1.
The fan assembly comprises the fan stepping speed regulating circuit and a fan, wherein the fan stepping speed regulating circuit and the fan are connected to enable the fan to achieve different rotating speeds.
The utility model provides a gas heater, its includes foretell fan subassembly, control assembly, combustion module, heat exchange subassembly and water heater casing, fan subassembly, control assembly, combustion module and heat exchange subassembly all set up in the water heater casing, heat exchange subassembly is located combustion module top, fan subassembly and combustion module intercommunication, control assembly and fan subassembly connect and are used for adjusting the rotational speed of fan according to water heater heating load size.
The heat exchange assembly comprises a water inlet joint, a coil pipe, a heat exchanger, a temperature controller and a water outlet joint, wherein the coil pipe is arranged around the outer wall of the heat exchanger, one end of the coil pipe is connected with the water inlet joint through a pipeline, the other end of the coil pipe is connected with the water outlet joint through a pipeline, the temperature controller is arranged at the tail end of the coil pipe and used for detecting water temperature and feeding back a detection result to the control assembly, and when the water temperature received by the control assembly is greater than a water temperature threshold value, the control assembly controls the water heater to cut off a power supply.
The water flow sensor is arranged on a pipeline connected with the coil pipe and the water inlet joint, and detects water flow and feeds the detection result back to the control assembly.
The pipeline that coil pipe and play water joint are connected is provided with temperature sensor, temperature sensor detects the play water temperature and feeds back the testing result to control assembly.
The combustion assembly comprises an air inlet joint, a proportional valve, a sectional valve and a combustor, wherein the proportional valve is connected with the air inlet joint and used for adjusting the gas flow, and the proportional valve is connected with the combustor through the sectional valve.
The fan assembly further comprises a wind pressure sensor, wherein the wind pressure sensor is positioned at an air outlet of the fan and used for detecting wind pressure and feeding back a detection result to the control assembly.
The top of the water heater shell is provided with a smoke tube connector, and the smoke tube connector is communicated with the combustion assembly and used for discharging waste gas generated during combustion.
Compared with the prior art, when the multi-gear wind speed control device is used, different voltages are output by tapping the primary winding of the power transformer, and the single-gear fan is driven by switching the relays, so that multi-gear wind speed control is realized.
Drawings
FIG. 1 is a schematic circuit diagram of a fan step-by-step speed regulation circuit provided in embodiment 1 of the present invention;
fig. 2 is a schematic structural diagram of a gas water heater according to embodiment 3 of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present invention more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
The embodiment 1 of the invention provides a fan stepping speed regulation circuit, which is shown in fig. 1, and comprises a power transformer T and a relay switching module K, wherein the output side of the power transformer T is connected with the relay switching module K, and the output end of the relay switching module K is connected with a fan; the primary winding of the power transformer T extracts at least one tap end T1, and the tap end T1 is connected with the relay switching module K and is used for outputting different voltages through the relay switching module K, wherein the different voltages correspond to different rotating speeds of the fan;
when the relay switching module K comprises two relays, namely a first relay K1 and a second relay K2, a live wire end of the power transformer T is connected with a normally open contact of the second relay K2, a zero wire end of the power transformer T is connected with normally closed contacts of the first relay K1 and the second relay K2, and the tap end T1 is connected with the normally open contact of the first relay K1;
in this way, there are four kinds of combination modes between the first relay K1 and the second relay K2, so as to obtain four kinds of different driving voltages, and corresponding to four kinds of different rotation speeds, realize high-grade, medium-grade, low-grade and stop-grade, as shown in table 1 specifically:
TABLE 1
The working process comprises the following steps: the states and corresponding voltages of the relays in the relay switching module K are switched, voltage output is achieved, and different rotating speeds and gears are achieved.
Compared with the prior art, the multi-gear wind speed regulation is realized by tapping the primary winding of the power transformer, outputting different voltages, switching through a plurality of relays and driving a single-gear fan.
The embodiment 2 of the invention provides a fan assembly, which comprises a fan stepping speed regulating circuit and a fan 11, wherein the fan stepping speed regulating circuit and the fan 11 are connected to enable the fan 11 to achieve different rotating speeds; thus, the fan stepping speed regulating circuit is applied to the fan 11, so that the rotating speed of the fan 11 can be controlled.
The embodiment 3 of the invention provides a gas water heater, as shown in fig. 2, which comprises a fan assembly 1, a control assembly 2, a combustion assembly 3, a heat exchange assembly 4 and a water heater shell 5 in the embodiment 2, wherein the fan assembly 1, the control assembly 2, the combustion assembly 3 and the heat exchange assembly 4 are all arranged in the water heater shell 5, the heat exchange assembly 4 is positioned above the combustion assembly 3, the fan assembly 1 is communicated with the combustion assembly 3, and the control assembly 2 and the fan assembly 1 are connected for adjusting the rotating speed of a fan 11 according to the heating load of the water heater;
thus, by adopting the structure, when the gas water heater works, the control component 2 automatically matches the rotating speed of the fan component 1 according to the heating load, so that the air with the optimal quantity is introduced into the combustion component 3, and the optimal air-fuel ratio is achieved.
The heat exchange assembly 4 comprises a water inlet joint 41, a coil pipe 42, a heat exchanger 43, a temperature controller 44 and a water outlet joint 45, wherein the coil pipe 42 is arranged around the outer wall of the heat exchanger 43, one end of the coil pipe is connected with the water inlet joint 41 through a pipeline, the other end of the coil pipe is connected with the water outlet joint 45 through a pipeline, the temperature controller 44 is arranged at the tail end of the coil pipe 42 and used for detecting the water temperature and feeding back the detection result to the control assembly 2, and when the water temperature received by the control assembly 2 is greater than a water temperature threshold value, the control assembly 2 controls the power supply of the water heater to be cut off;
in this way, cold water enters the coil pipe 42 through the water inlet joint 41, and the coil pipe 42 surrounds the outer wall of the heat exchanger 43 and penetrates the inner fins back and forth, so that the water in the pipe absorbs the heat of the combustion assembly 3, and the heating is realized; and, coil pipe 42 output is equipped with temperature controller 44 for the temperature after the monitoring heats, when the temperature is too high, in order to avoid unexpected emergence, control assembly 2 control power cut off protects the combustor.
A water flow sensor 46 is arranged on a pipeline connected with the coil pipe 42 and the water inlet joint 41, and the water flow sensor 46 detects the water flow and feeds back the detection result to the control assembly 2; a temperature sensor 47 is arranged on a pipeline connected with the coil pipe 42 and the water outlet joint 45, and the temperature sensor detects the water outlet temperature and feeds the detection result back to the control assembly 2.
The combustion assembly 3 comprises an air inlet joint 31, a proportional valve 32, a sectional valve 33 and a combustor 34, wherein the proportional valve 32 and the air inlet joint 31 are connected for adjusting the gas flow, and the proportional valve 32 is connected with the combustor 34 through the sectional valve 33;
in this way, the gas starts from the air inlet joint 31, the air flow is regulated by the proportional valve 32, the gas directly flows to the nozzle in the burner at the output end of the proportional valve 32 or indirectly flows to the nozzle through the sectional valve 33, and is mixed with air after being sprayed out, and the gas is combusted under the control of the control assembly 2.
The proportional valve 32 also incorporates a shut-off valve for shutting off the gas passage.
The fan assembly 1 further comprises a wind pressure sensor 12, wherein the wind pressure sensor 12 is positioned at an air outlet of the fan 11 and is used for detecting wind pressure and feeding back a detection result to the control assembly 2; therefore, when outdoor backflow wind occurs, the gear of the fan is improved to a limited extent, and the working environment adaptability of the water heater is expanded.
The top of the water heater shell 5 is provided with the smoke pipe joint 51, and the smoke pipe joint 51 is communicated with the combustion assembly 3, so that waste gas generated during combustion is uniformly discharged through the smoke pipe joint 51, and environmental pollution is avoided.
The working process comprises the following steps: the fuel gas starts from the air inlet joint 31, the air flow is regulated through the proportional valve 32, the fuel gas directly flows to a nozzle in the combustor at the output end through the proportional valve 32 or indirectly flows to the nozzle through the sectional valve 33, and the fuel gas is mixed with air provided by the fan assembly 1 after being sprayed out to form combustible mixed gas; cold water enters the coil pipe 42 through the water inlet joint 41, and the coil pipe 42 surrounds the outer wall of the heat exchanger 43 and penetrates through the inner fins back and forth, so that the water in the pipe absorbs heat generated when the mixed gas burns, and the water is heated; in the whole process, the control assembly 2 automatically matches the rotating speed of the fan assembly 1 according to the heating load, so that the optimal quantity of air is introduced into the combustion assembly 3 to achieve the optimal air-fuel ratio.
According to the embodiment, the primary winding of the power transformer is tapped, different voltages are output, the relays are used for switching, the single-gear fan is driven, the multi-gear wind speed adjustment of the alternating-current fan assembly is realized, the current load and wind quantity of the gas water heater reach the optimal proportion, and the optimal combustion effect of the gas water heater is realized.
The present invention is not limited to the above-mentioned embodiments, and any changes or substitutions that can be easily understood by those skilled in the art within the technical scope of the present invention are intended to be included in the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the protection scope of the claims.
Claims (6)
1. The gas water heater is characterized by comprising a fan assembly (1), a control assembly (2), a combustion assembly (3), a heat exchange assembly (4) and a water heater shell (5), wherein the fan assembly (1), the control assembly (2), the combustion assembly (3) and the heat exchange assembly (4) are arranged in the water heater shell (5), the heat exchange assembly (4) is positioned above the combustion assembly (3), the fan assembly (1) is communicated with the combustion assembly (3), the control assembly (2) and the fan assembly (1) are connected to adjust the rotating speed of the fan (11) according to the heating load of the water heater, a smoke pipe connector (51) is arranged at the top of the water heater shell (5), and the smoke pipe connector (51) is communicated with the combustion assembly (3) to discharge waste gas generated during combustion;
the fan assembly comprises a fan stepping speed regulating circuit and a fan (11), wherein the fan stepping speed regulating circuit is connected with the fan (11) and used for enabling the fan (11) to achieve different rotating speeds;
the fan step speed regulation circuit comprises a power transformer T and a relay switching module K, wherein the output side of the power transformer T is connected with the relay switching module K, and the output end of the relay switching module K is connected with a fan; at least one tap end T1 is extracted from a primary winding of the power transformer T, and the tap end T1 is connected with a relay switching module K and used for outputting different voltages through the relay switching module K;
the relay switching module K comprises a first relay K1 and a second relay K2, a live wire end of the power transformer T is connected with a normally open contact of the second relay K2, a zero wire end of the power transformer T is connected with normally closed contacts of the first relay K1 and the second relay K2, and a tap end T1 is connected with the normally open contact of the first relay K1.
2. A gas water heater according to claim 1, wherein the heat exchange assembly (4) comprises a water inlet joint (41), a coil pipe (42), a heat exchanger (43), a temperature controller (44) and a water outlet joint (45), the coil pipe (42) is arranged around the outer wall of the heat exchanger (43), one end of the coil pipe is connected with the water inlet joint (41) through a pipeline, the other end of the coil pipe is connected with the water outlet joint (45) through a pipeline, the temperature controller (44) is arranged at the tail end of the coil pipe (42) and used for detecting water temperature and feeding back the detection result to the control assembly (2), and the control assembly (2) controls the water heater to cut off power when the water temperature received by the control assembly (2) is larger than a water temperature threshold value.
3. A gas water heater as claimed in claim 2, wherein a water flow sensor (46) is provided on the pipe connecting the coil (42) and the water inlet connector (41), the water flow sensor (46) detecting the water flow and feeding back the detection result to the control assembly (2).
4. A gas water heater as claimed in claim 3, characterised in that the pipe connecting the coil (42) to the water outlet fitting (45) is provided with a temperature sensor (47) which detects the water outlet temperature and feeds the detection back to the control assembly (2).
5. A gas water heater according to claim 4, wherein the combustion assembly (3) comprises an air inlet joint (31), a proportional valve (32), a sectional valve (33) and a burner (34), the proportional valve (32) and the air inlet joint (31) being connected for adjusting the gas flow, the proportional valve (32) being connected to the burner (34) by the sectional valve (33).
6. A gas water heater according to any one of claims 1-5, wherein the fan assembly (1) further comprises a wind pressure sensor (12), the wind pressure sensor (12) is located at the air outlet of the fan (11) for detecting wind pressure, and the detection result is fed back to the control assembly (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811515154.9A CN110207397B (en) | 2018-12-12 | 2018-12-12 | Fan step speed regulation circuit, fan assembly using same and gas water heater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811515154.9A CN110207397B (en) | 2018-12-12 | 2018-12-12 | Fan step speed regulation circuit, fan assembly using same and gas water heater |
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| CN110207397A CN110207397A (en) | 2019-09-06 |
| CN110207397B true CN110207397B (en) | 2023-11-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201811515154.9A Active CN110207397B (en) | 2018-12-12 | 2018-12-12 | Fan step speed regulation circuit, fan assembly using same and gas water heater |
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Families Citing this family (1)
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| CN111140527A (en) * | 2019-12-23 | 2020-05-12 | 华帝股份有限公司 | Control method and control system for stable operation of fan |
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| US8362737B2 (en) * | 2008-09-08 | 2013-01-29 | Nidec Motor Corporation | Blower motor for HVAC systems |
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2018
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| CN1607363A (en) * | 2003-10-15 | 2005-04-20 | 中山华帝燃具股份有限公司 | Domestic gas instantaneous water heater capable of realizing gas-air proportional control |
| CN1668159A (en) * | 2005-02-03 | 2005-09-14 | 程涛 | Intelligent electricity-saving device for lighting supply source |
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| Publication number | Publication date |
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| CN110207397A (en) | 2019-09-06 |
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