CN110966760B - Pressurized gas water heater and control method - Google Patents
Pressurized gas water heater and control method Download PDFInfo
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- CN110966760B CN110966760B CN201811154313.7A CN201811154313A CN110966760B CN 110966760 B CN110966760 B CN 110966760B CN 201811154313 A CN201811154313 A CN 201811154313A CN 110966760 B CN110966760 B CN 110966760B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H9/00—Details
- F24H9/20—Arrangement or mounting of control or safety devices
- F24H9/2007—Arrangement or mounting of control or safety devices for water heaters
- F24H9/2014—Arrangement or mounting of control or safety devices for water heaters using electrical energy supply
- F24H9/2028—Continuous-flow heaters
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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
- F24H1/124—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 using fluid fuel
Abstract
The invention discloses a pressurized gas water heater and a control method thereof, wherein the pressurized gas water heater comprises a heat exchange device, a combustion chamber and a gas inlet pipeline, the gas inlet pipeline is connected with the combustion chamber, and the gas enters the combustion chamber to be combusted to provide a heat source for the heat exchange device. The gas water heater can boost the pressure of the gas when the pressure of the gas is low, and ensure the gas inlet pressure and stability, so that the optimal combustion working condition is matched, the temperature and stability of the outlet water are ensured, the energy consumption is saved, and the bathing experience of a user is improved.
Description
Technical Field
The invention belongs to the field of water heaters, and particularly relates to a pressurized gas water heater and a control method thereof.
Background
The gas water heater is a rapid water heater for transferring heat to water by burning fuel, and is popular with ordinary household users. However, the combustion effect of the gas water heater is limited by the household gas supply condition of the user, and partial users can have the phenomenon that the gas water heater cannot work normally due to insufficient gas supply pressure of the overall pipe network or insufficient gas supply during gas consumption peaks, so that the hot water outlet speed and the user bathing experience are affected.
At present, the maximum gas pressure in China is about 3000Pa, but the gas pressure is seriously insufficient when the gas is used at a peak, which inevitably causes the following problems: firstly, when the gas consumption peak is high, the gas pressure may be lower than 1000Pa, so that the gas water heater cannot be started normally; secondly, according to the working principle of the gas water heater, the air pressure hour directly influences the water outlet speed of the hot water; thirdly, the stability of atmospheric pressure is poor, influences the stability of water temperature, and these all can be felt by the user is direct in use, very big influence user experience.
At present, no related gas pressurizing water heater product exists in the market, when the pressure is low, the proportion of gas to air is regulated only by controlling the proportional valve, and the pressure stabilization property of the gas behind the proportional valve is improved by increasing the opening of the proportional valve, but when the pressure of the gas is lower than 1000Pa, the effect of the method is very limited. Therefore, a gas water heater capable of pressurizing gas is needed, the optimal combustion working condition can be guaranteed to be matched, the temperature and stability of the discharged water are guaranteed, and therefore user experience is improved.
The present invention has been made in view of this.
Disclosure of Invention
The invention aims to solve the technical problem of overcoming the defects in the prior art and providing a pressurized gas water heater and a control method. The gas water heater is provided with the turbocharging device, and the liquid driving device is used for driving the turbocharging device to operate so as to boost the gas, so that the gas can be pressurized when the pressure of the gas is low, the gas inlet pressure and stability are ensured, the optimal combustion working condition is ensured to be matched, the temperature and stability of the discharged water are ensured, the energy consumption is saved, and the bathing experience of a user is improved.
In order to solve the technical problems, the invention adopts the basic conception of the technical scheme that:
the first object of the invention is to provide a pressurized gas water heater, which comprises a heat exchange device, a combustion chamber, a gas inlet pipeline, a turbo charger and a liquid driving device, wherein the gas inlet pipeline is connected with the combustion chamber, the gas enters the combustion chamber to be combusted to provide a heat source for the heat exchange device, the turbo charger is arranged on the gas inlet pipeline, and the liquid driving device drives liquid to flow through the turbo charger to drive the turbo charger to operate, so that the gas is pressurized.
The turbocharger device comprises a turbine, a driving shaft and a supercharger, wherein the turbine is connected with the supercharger through the driving shaft, and the supercharger is driven to supercharge the gas in the gas inlet pipeline when the turbine rotates;
preferably, the turbine is arranged coaxially with the supercharger.
In a further scheme, the liquid driving device comprises a water pump, a turbine water inlet pipe and a turbine water outlet pipe are arranged on the turbine, and the water outlet end of the water pump is communicated with the turbine through the turbine water inlet pipe; when the gas needs to be pressurized, the water pump drives water to enter the turbine, the water flow pushes the turbine to rotate and then is discharged from the turbine water outlet pipe, and the turbine drives the supercharger to operate so as to pressurize the gas in the gas inlet pipeline.
Further scheme, the water pump include two at least water outlet ends, one water outlet end is linked together through turbine inlet tube and turbine, another water outlet end is linked together through first water route and heat transfer device's water inlet, the outlet pipe of turbine is linked together through second water route and first water route.
According to a further scheme, a first control valve is arranged on the first waterway, and a second control valve is arranged on the second waterway and/or a turbine water inlet pipe;
preferably, the first control valve and/or the second control valve is a shut-off valve.
According to a further scheme, a water inlet pipe of the water pump is arranged at the water inlet end of the water pump, the water outlet end of the water pump is communicated with a turbine through a turbine water inlet pipe, and a turbine water outlet pipe is communicated with the water inlet pipe of the water pump; when the gas needs to be pressurized, the water pump drives water to enter the turbine, the water flow pushes the turbine to rotate and then returns to the water inlet pipe from the water outlet pipe of the turbine, and the turbine drives the supercharger to operate so as to pressurize the gas in the gas inlet pipeline.
The supercharger comprises a shell, wherein an impeller is arranged in the shell, the impeller is connected with a turbine through a driving shaft, a supercharger air inlet pipe and a supercharger air outlet pipe are arranged on the shell, and the supercharger air outlet pipe is communicated with a combustion cavity;
Preferably, a proportion adjusting device is arranged between the air outlet pipe of the supercharger and the combustion cavity to adjust the air inlet proportion of the fuel gas and the air.
The fuel gas pressure detection device is arranged on a fuel gas inlet pipeline and is used for detecting the fuel gas inlet pressure;
preferably, the gas pressure detection device is arranged on the gas outlet pipe of the supercharger;
preferably, the gas pressure sensor further comprises a control device, wherein the control device is electrically connected with the gas pressure detection device and/or the water pump and/or the first control valve and/or the second control valve.
The second object of the present invention is to provide a control method for a pressurized gas water heater, wherein when the gas water heater judges that the gas needs to be pressurized, the control method controls the liquid driving device to act, and the liquid is conveyed into the turbocharging device to drive the turbocharging device to operate so as to pressurize the gas; and when the supercharging is judged to be unnecessary, the turbocharger is closed.
According to the further scheme, when the gas water heater works normally and the gas is not pressurized, the first control valve is controlled to be opened, the second control valve is controlled to be closed, and the first waterway is communicated; when the gas water heater judges that the gas needs to be pressurized, the first control valve is controlled to be closed, the second control valve is controlled to be opened, the water pump conveys water flow to enter the turbine and is discharged from the second waterway, the turbine is pushed to rotate, the impeller of the supercharger is driven to rotate, and the gas is pressurized.
After the technical scheme is adopted, compared with the prior art, the invention has the following beneficial effects:
1. the gas water heater is provided with the turbocharging device, and the liquid driving device is used for driving the turbocharging device to operate so as to boost the gas, so that the gas can be pressurized when the pressure of the gas is low, the gas inlet pressure and stability are ensured, the optimal combustion working condition is ensured to be matched, the temperature and stability of the discharged water are ensured, the energy consumption is saved, and the bathing experience of a user is improved.
2. The liquid driving device of the gas water heater can be a water driving device, can be a water pump which is arranged independently, and adopts an independent waterway to convey water to the turbo charger to drive the turbo charger to operate and boost pressure; or the water pump and the heat exchange device of the gas water heater can share the same water pump, and the water pump drives water flow to enter the heat exchange device after passing through the turbocharging device, so that the supercharging can be realized, the water resource consumption can not be increased, and the cost is reduced.
3. The gas water heater of the invention adopts the preferable scheme that the gas water heater shares the same water pump with a heat exchange device of the gas water heater, and the control of the water paths is realized by arranging a first water path directly connected with the heat exchange device and a second water path communicated with a turbocharging device and arranging control valves on the first water path and the second water path. Therefore, when the gas pressure is low, water flow can be conveniently controlled to pass through and drive the turbocharger to operate, the gas is pressurized, the gas inlet pressure and stability are ensured, and the temperature and stability of the outlet water are ensured.
The following describes the embodiments of the present invention in further detail with reference to the accompanying drawings.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention. It is evident that the drawings in the following description are only examples, from which other drawings can be obtained by a person skilled in the art without the inventive effort. In the drawings:
FIG. 1 is a schematic view of a gas water heater according to the present invention;
FIG. 2 is a schematic flow chart of a control method of a gas water heater according to a second embodiment of the invention;
FIG. 3 is a schematic flow chart of a control method of a gas water heater according to a third embodiment of the invention;
fig. 4 is a flow chart of a control method of a gas water heater according to a fourth embodiment of the invention.
In the figure: the device comprises a control device 1, a combustion chamber 2, a gas inlet pipeline 3, a turbocharging device 4, a turbine 41, a turbine 411 water inlet pipe, a turbine water outlet pipe 412, a drive shaft 42, a supercharger 43, a housing 431, a supercharger air inlet pipe 432, a supercharger air outlet pipe 433, an impeller 434, a liquid driving device 5, a water pump 51, a first water channel 52, a second water channel 53, a first control valve 54, a second control valve 55, a proportional regulating device 6, a heat exchange device 7 and a gas pressure detecting device 8.
It should be noted that these drawings and the written description are not intended to limit the scope of the inventive concept in any way, but to illustrate the inventive concept to those skilled in the art by referring to the specific embodiments.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions in the embodiments will be clearly and completely described with reference to the accompanying drawings in the embodiments of the present invention, and the following embodiments are used to illustrate the present invention, but are not intended to limit the scope of the present invention.
In the description of the present invention, it should be noted that the directions or positional relationships indicated by the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention.
In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
Example 1
As shown in fig. 1, the embodiment provides a pressurized gas water heater, which comprises a heat exchange device 7, a combustion chamber 2 and a gas inlet pipeline 3, wherein the gas inlet pipeline 3 is connected with the combustion chamber 2, gas enters the combustion chamber 2 to be combusted to provide a heat source for the heat exchange device 7, the pressurized gas water heater further comprises a turbocharging device 4 and a liquid driving device 5, the turbocharging device 4 is arranged on the gas inlet pipeline 3, and the liquid driving device 5 drives the turbocharging device 4 to operate so as to pressurize the gas.
The heat exchanger 7 of the gas water heater is filled with water such as tap water or filtered water. The fuel gas enters the combustion chamber 2 through the fuel gas inlet pipeline 3 for combustion, the generated heat is transferred to the heat exchange device 7 through heat exchange, and the water in the heat exchange device is heated to a certain temperature and then discharged for bathing of a user.
The gas intake line 3 of the present invention is provided with a turbocharger 4, and the liquid driving device 5 may be a water driving device or other devices such as an oil driving device. The liquid driving device 5 drives liquid such as water or oil to flow through the turbocharger device 4 to drive the turbocharger device 4 to rotate, so that the supercharging of the fuel gas is realized. The gas water heater can boost the pressure of the gas when the pressure of the gas is low, and ensure the gas inlet pressure and stability, so that the optimal combustion working condition is matched, the temperature and stability of the discharged water are ensured, and meanwhile, the liquid driving device 5 can save electric energy consumption, reduce the cost and improve the bathing experience of users.
Further, the turbocharger 4 includes a turbine 41, a driving shaft 42, and a supercharger 43, where the turbine 41 is connected to the supercharger 43 through the driving shaft 42, and the supercharger 43 is driven to supercharge the fuel gas in the fuel gas inlet pipeline 3 when the turbine 41 rotates.
The turbocharger 4 includes at least three parts, the supercharger 43 is disposed on the gas inlet pipe 3, the turbine 41 is disposed outside the gas inlet pipe 3, and the turbine 41 is a rotary power machine that converts the energy of the flowing working medium into mechanical work. Preferably, the turbine 41 is arranged coaxially with the supercharger 43. When the turbine 41 is driven to rotate, the supercharger 43 is driven to operate, and the fuel gas is supercharged. This structure can convert the energy of the liquid flow into the kinetic energy of the pressurizer 43, and the fuel gas pressurization is realized with lower energy consumption.
Further, the booster 43 is a compressor arranged in the gas inlet pipeline 3, and comprises an impeller 434, and the gas in the pipeline is boosted by the rapid rotation of the impeller 434. Specifically, the supercharger 43 includes a casing 431, an impeller 434 is disposed in the casing 431, the impeller 434 is connected to the turbine 41 through a driving shaft 42, and a sheath is disposed outside the driving shaft 42. The casing 431 is provided with a supercharger air inlet pipe 432 and a supercharger air outlet pipe 433, and the supercharger air outlet pipe 433 is communicated with the combustion chamber 2. Thus, when the turbine 41 rotates, the impeller 434 is driven to rotate rapidly, so as to compress and boost the fuel gas, and the boosted fuel gas enters the combustion chamber 2 through the booster air outlet pipe 433.
Further, the liquid driving device 5 comprises a water pump 51, a turbine water inlet pipe 411 and a turbine water outlet pipe 412 are arranged on the turbine 41, and the water outlet end of the water pump 51 is communicated with the turbine 41 through the turbine water inlet pipe 411; when the gas needs to be pressurized, the water pump 51 drives water to enter the turbine 41, the water flow pushes the turbine 41 to rotate and then is discharged from the turbine water outlet pipe 412, and the turbine 41 drives the supercharger 43 to operate so as to pressurize the gas in the gas inlet pipeline 3. So, turn into mechanical energy with the energy of rivers and drive booster 43 and carry out the pressure boost to the gas, both can guarantee gas inlet pressure and stability to guarantee to match best combustion condition, guarantee the temperature and the stability of play water, can also save certain energy consumption simultaneously, improve user's bathing experience.
The connection manner of the liquid driving device 5 and the turbocharger device 4 in this embodiment may be, but is not limited to, the following two types:
in scheme 1, the water pump 51 includes at least two water outlets, one of which is connected to the turbine 41 through the turbine water inlet pipe 411, and the other of which is connected to the water inlet of the heat exchange device 7 through the first water channel 52, and the water outlet pipe of the turbine 41 is connected to the first water channel 52 through the second water channel 53.
The water pump 51 of the existing gas water heater pumps tap water or purified water and other common water into the heat exchange device 7, and the water is discharged for use after heating. In this embodiment, the water pump 51 of the conventional heat exchanger 7 is used to drive the turbine 41 by adding only the water path flowing through the turbine 41. When the pressurization is not needed, the water pump 51 can directly pump the water 51 into the first waterway 52, directly enter the heat exchange device 7, and the turbocharger device 4 does not work. When the pressure is needed to be increased, the water pump 51 inputs water into the turbine water inlet pipe 411, the water flow drives the turbine 41 to rotate and then enters the heat exchange device 7 through the second water path 53 and the first water path 52, so that the energy of water resources can be fully utilized, the water source can be well utilized, and the water source can be used as bath water after being heated, thereby achieving the purposes of reducing energy consumption and cost.
Further, the first water channel 52 is provided with a first control valve 54, and the second water channel 53 and/or the turbine inlet pipe 411 is provided with a second control valve 55. The first control valve 54 and the second control valve 55 are electrically connected to the control device 1 of the gas water heater. The control device 1 controls the opening and closing of the first control valve 54 and the second control valve 55, controls the on-off of the waterway, and controls the trend of water flow, thereby opening the turbocharging device 4 or closing the turbocharging device 4.
Preferably, the first control valve 54 and/or the second control valve 55 are shut-off valves.
In the scheme 2, a water inlet end of the water pump 51 is provided with a water inlet pipe of the water pump 51, a water outlet end of the water pump 51 is communicated with the turbine 41 through a turbine water inlet pipe 411, and a turbine water outlet pipe 412 is communicated with the water inlet pipe of the water pump 51; when the gas needs to be pressurized, the water pump 51 drives water to enter the turbine 41, the water flow pushes the turbine 41 to rotate and then returns to the water inlet pipe from the turbine water outlet pipe 412, and the turbine 41 drives the supercharger 43 to operate so as to pressurize the gas in the gas inlet pipeline 3.
In this solution, a water pump 51 is additionally provided, and the driving water flow is not communicated with the heat exchange device 7. The water pump 51 drives water flow to enter the turbine 41, drives the turbine 41 to operate and then flows back to the water inlet pipe of the water pump 51, so that water circulation is formed, the pressurization of fuel gas is realized, and the waste of water resources is avoided.
In either scheme 1 or scheme 2, when the gas needs to be pressurized, the turbine 41 can be pushed to rotate by using the impulse of water flow to drive the impeller 434 of the coaxial booster 43 to rotate to compress the gas, so as to realize the pressurization of the gas. In the process, the energy of water flow is utilized, and water resources are also utilized, so that the energy consumption and the cost are reduced, the water outlet temperature and the stability of the bath water are ensured, and the user experience is improved.
Further, the combustion chamber combustion device further comprises a proportion adjusting device 6, wherein the proportion adjusting device 6 is arranged between the supercharger 43 and the combustion chamber 2; the booster air outlet pipe 433 of the booster 43 is communicated with the air inlet end of the proportional adjusting device 6, and the air outlet end of the proportional adjusting device 6 is communicated with the combustion chamber 2, so that the air inlet proportion of the fuel gas and the air entering the combustion chamber 2 is adjusted. The fuel gas after being rotationally pressurized by the impeller 434 of the supercharger 43 enters the proportion adjusting device 6 and is mixed with air in proportion and then enters the combustion chamber 2 for combustion, so that the gas inlet pressure is ensured and the water outlet stability is ensured. The proportional control device 6 may be a proportional valve.
Further, the device also comprises a gas pressure detection device 8, wherein the gas pressure detection device 8 is arranged on the gas inlet pipeline 3 and is used for detecting gas inlet pressure. Preferably, the gas pressure detecting device 8 is arranged on the air outlet pipe 433 of the booster 43.
The gas pressure detecting device 8 may be a gas pressure sensor, and detects the pressure of the gas in the gas intake pipe 3 in real time. The gas pressure detection device 8 is arranged at the gas outlet end of the turbocharger device 4 and is positioned on a pipeline between the turbocharger device 4 and the combustion chamber 2, and can detect the pressure of the gas before and after pressurization.
Further, the device further comprises a control device 1, wherein the control device 1 is electrically connected with the gas pressure detection device 8 and/or the water pump 51 and/or the first control valve 54 and/or the second control valve 55.
The control device 1 is a control board of the gas water heater, a driving program is preset in the control device 1, and the opening, the operation parameters and the closing of the turbocharger device 4 are controlled by controlling the water pump 51, the first control valve 54, the second control valve 55 and the like, so that the gas is pressurized.
In addition, the embodiment also provides a control method of the pressurized gas water heater, which specifically comprises the following steps:
when the gas water heater judges that the gas needs to be pressurized, the liquid driving device 5 is controlled to act, liquid is conveyed into the turbocharging device 4, the turbocharging device 4 is driven to operate, and the gas is pressurized; when it is determined that supercharging is not necessary, the turbocharger device 4 is turned off.
Further, when the gas water heater works normally and the gas is not pressurized, the first control valve 54 is controlled to be opened, the second control valve 55 is closed, and the first waterway 52 is communicated; when the gas water heater judges that the gas needs to be pressurized, the first control valve 54 is controlled to be closed, the second control valve 55 is controlled to be opened, the water pump 51 conveys water flow into the turbine 41 and discharges the water flow from the second waterway 53, the turbine 41 is pushed to rotate, the impeller 434 of the booster 43 is driven to rotate, and the gas is pressurized.
So, judge that gas pressure is too low, when needs carry out the pressure boost, can conveniently control rivers and pass through and drive turbocharging device 4 operation, carry out the pressure boost to the gas, guarantee gas inlet pressure and stability, guarantee the temperature and the stability of leaving water.
Example two
As shown in fig. 2, this embodiment is a further limitation of the first embodiment, and provides a control method of a pressurized gas water heater, where the gas water heater of this embodiment includes a turbocharger device 4, a liquid driving device 5 and a gas pressure detecting device 8, the turbocharger device 4 is disposed on the gas intake pipeline 3, the liquid driving device 5 drives the turbocharger device 4 to operate, and the gas water heater controls the liquid driving device 5 to drive/close the turbocharger device 4 according to the pressure value of the gas detected by the gas pressure detecting device 8, so as to perform/stop pressurizing of the gas.
According to the scheme, the gas water heater controls the liquid driving device 5 to drive/close the turbocharging device 4 according to the pressure value of the gas detected by the gas pressure detecting device 8, so that the pressure of the gas can be controlled to be charged, the gas inlet pressure is ensured to be stable, the gas water heater is suitable for various combustion conditions, the temperature and the stability of the discharged water are ensured, and the bathing experience of a user is greatly improved.
Further, the device also comprises a control device 1, when the gas pressure detection device 8 detects that the real-time gas pressure value N is lower than the preset value N1, a signal is transmitted to the control device 1, and the control device 1 controls the liquid driving device 5 to drive liquid to enter the turbocharging device 4 to drive the turbocharging device to operate, so that the gas is pressurized.
The gas pressure detection device 8 and the liquid driving device 5 of the scheme are electrically connected with the control device 1. The preset value N1 can be the lowest pressure value meeting the normal combustion of the gas water heater, and can also be set according to the actual gas supply pressure of local gas and the specification of the gas water heater.
The gas pressure detecting device 8 detects the real-time gas pressure and transmits a signal to the control device 1 in real time, and the control device 1 compares the received real-time gas pressure value N with a preset value N1. After comparison, if the real-time gas pressure value N is greater than or equal to the preset value N1, the control device 1 controls the turbocharger device 4 to keep a closed state for normal combustion; if the real-time gas pressure value N is smaller than the preset value N1, the control device 1 determines that the pressure is low, and controls the turbocharger device 4 to operate so as to boost the gas. Therefore, the pressure of the gas inlet can be kept within a certain range, and the pressure stability is ensured.
Further, the turbocharger 4 includes a turbine 41, a driving shaft 42, and a supercharger 43, the turbine 41 is connected with the supercharger 43 through the driving shaft 42, a turbine water inlet pipe 411 and a turbine water outlet pipe 412 are disposed on the turbine 41, the liquid driving device 5 includes a water pump 51, and a water outlet end of the water pump 51 is communicated with the turbine 41 through the turbine water inlet pipe 411; the gas pressure detection device 8 is arranged at the gas outlet end of the supercharger 43;
when the gas pressure detection device 8 detects that the real-time gas pressure value N is lower than the preset value N1, the water pump 51 is controlled to be started, water flow pushes the turbine 41 to rotate and then is discharged from the turbine water outlet pipe 412, the turbine 41 drives the supercharger 43 to operate, the gas is pressurized, the gas inlet pressure and stability are guaranteed, the optimal combustion working condition is guaranteed to be matched, and the temperature and stability of the discharged water are guaranteed.
Different control methods are adopted for the connection modes of different liquid driving devices 5 and the turbocharger device 4, and specifically, the following two methods can be adopted but not limited to:
scheme 1: the water pump 51 comprises at least two water outlets, one water outlet is communicated with the turbine 41 through a turbine water inlet pipe 411, the other water outlet is communicated with a water inlet of the heat exchange device 7 through a first water channel 52, a water outlet pipe of the turbine 41 is communicated with the first water channel 52 through a second water channel 53, a first control valve 54 is arranged on the first water channel 52, and a second control valve 55 is arranged on the second water channel 53.
For this scheme, the control method specifically includes: when the gas pressure detection device 8 detects that the real-time gas pressure value N is lower than the preset value N1, the water pump 51 is controlled to be turned on, the first control valve 54 is closed, the second control valve 55 is turned on, the water pump 51 conveys water flow into the turbine 41 and discharges the water flow from the second waterway 53, the turbine 41 is pushed to rotate, the impeller 434 of the booster 43 is driven to rotate, and the gas is boosted.
Further, in the process of pressurizing the fuel gas, the fuel gas pressure detecting device 8 detects the fuel gas pressure value in real time, and when the detected fuel gas pressure reaches or exceeds the target pressure value N2, the first control valve 54 is controlled to be opened, the first waterway 52 is conducted, the second control valve 55 is closed, the water flow does not flow through the turbine 41, and the operation of the turbocharger device 4 is stopped. Therefore, the continuous working and heating time of the turbocharging device 4 can be reduced, the service life is prolonged, and the normal operation of the gas water heater is ensured.
In the scheme 2, a water inlet end of the water pump 51 is provided with a water inlet pipe of the water pump 51, a water outlet end of the water pump 51 is communicated with the turbine 41 through a turbine water inlet pipe 411, and a turbine water outlet pipe 412 is communicated with the water inlet pipe of the water pump 51;
for this scheme, the control method specifically includes: when the gas pressure detection device 8 detects that the real-time gas pressure value N is lower than the preset value N1, the water pump 51 is controlled to be started, the water pump 51 drives water to enter the turbine 41, the water flow pushes the turbine 41 to rotate and then returns to the water inlet pipe from the turbine water outlet pipe 412, the turbine 41 drives the supercharger 43 to operate, and the gas in the gas inlet pipeline 3 is supercharged.
Further, in the process of pressurizing the fuel gas, the fuel gas pressure detecting device 8 detects the fuel gas pressure value in real time, and when the detected fuel gas pressure reaches or exceeds the target pressure value N2, the water pump 51 is controlled to stop, and the turbocharger device 4 stops running.
In this scheme, additionally set up water pump 51, water pump 51 drive rivers get into turbine 41, drive the inlet tube that flows back to water pump 51 again after turbine 41 operation to self forms hydrologic cycle, realizes the pressure boost to the gas, avoids the waste of water resource.
For the two schemes, the method also comprises the following steps:
further, after receiving the pressure value N of the real-time gas transmitted from the gas pressure detecting device 8, the control device 1 calculates the rotation speed required by the turbine 41 and/or the driving parameters required by the liquid driving device 5 according to the difference between the real-time gas pressure value N and the target pressure value N2.
The control device 1 of the gas water heater is provided with a driving program for controlling the turbocharger device 4 in advance, and the driving parameters include the rotation speed of the impeller 434 in the supercharger 43. Preferably, the driving parameters include voltage, and/or current, and/or power. For example, the voltage of the water pump 51, the flow rate of the water flowing through the turbine 41, and the like are included. The relation between the driving parameter and the supercharging amount can be obtained through experiments. Therefore, the pressurizing degree of the fuel gas can be controlled, and the stability of the fuel gas pressure is guaranteed.
Further, the preset value N1 is smaller than or equal to the target pressure value N2;
preferably, the preset value N1 is 1/3-3/4 of the target pressure value N2. In this scheme, carry out the start-up judgement pressure N1 of gas pressure boost and the target pressure that gas pressure boost needs to reach set up certain pressure differential, so can increase the work intermittent type of turbo charger 4, reduce turbo charger 4 and start up repeatedly's frequency, improve its life, guarantee gas heater's normal operating.
Preferably, the preset value N1 is 1000-1500Pa, and the target pressure value N2 is 1500-3000Pa.
At present, the maximum gas pressure in China is about 3000Pa, and the gas pressure can be lower than 1000Pa when the gas consumption is high. In the scheme, the preset value N1 is set to be 1000Pa-1500Pa, and the stability of the fuel gas behind the proportional valve can be guaranteed without adjusting the proportional valve, so that the requirement on the proportional valve is low, and the cost of the fuel gas water heater is saved. When the gas pressure is lower than N1, the gas is pressurized, the gas pressure is not lower than N1 and reaches a target pressure value N2, and the gas pressure is ensured to be maintained at about 2000-3000Pa, so that the gas pressure can meet the requirement of normal combustion, the gas inlet is ensured to be stable, the temperature and the stability of water outlet are ensured, and good bath experience of a user is ensured.
Example III
As shown in fig. 3, this embodiment is a further limitation of the first embodiment, and this embodiment provides a control method of a pressurized gas water heater, where the gas water heater includes a turbocharger device 4 and a liquid driving device 5, the turbocharger device 4 is disposed on the gas inlet pipeline 3, and the liquid driving device 5 drives the turbocharger device 4 to operate; after the gas water heater is started, the liquid driving device 5 is controlled to drive/close the turbocharging device 4 according to whether ignition is successful or not, and the gas is pressurized/stopped.
The gas water heater of this embodiment includes heat transfer device 7, combustion chamber 2 and gas inlet line 3, and gas inlet line 3 is connected with combustion chamber 2, and gas gets into combustion chamber 2 internal combustion and provides the heat source for heat transfer device 7, and the water in heat transfer device 7 flows from the delivery port after the heat exchange, supplies the user to bathe and uses. After the gas water heater is started, firstly detecting whether the water quantity is normal, if the water quantity is normal, starting to perform ignition if no fault exists, judging the gas pressure according to whether the ignition is successful, and simultaneously controlling the liquid driving device 5 to drive liquid to enter the turbocharging device 4 to drive the liquid to operate so as to boost the gas; or the turbocharger 4 is controlled to be closed, the pressurization is not performed, and the gas water heater burns normally. So, can control the pressure of gas of admitting air, guarantee that gas inlet pressure is stable, be applicable to various combustion conditions, guarantee the temperature and the stability of leaving water, improve user's bathing greatly and experience. In addition, the liquid driving device 5 is adopted to drive the turbocharger device 4 to operate, so that the electric energy consumption can be reduced, and the cost is saved.
Further, after the gas water heater is started normally, ignition is performed first, and if the ignition is successful, normal work is performed; if the ignition is unsuccessful, the gas inlet pressure is judged to be too low, and the liquid driving device 5 is controlled to drive liquid to enter the turbocharging device 4 so as to drive the turbocharging device to operate, so that the gas is pressurized.
After the gas water heater is started, whether the water quantity is normal is detected, and after the water quantity is detected to be normal and no fault exists, the starting is judged to be normal, and ignition is started. If the ignition is unsuccessful, the gas inlet pressure is judged to be low, and the liquid driving device 5 is controlled to drive liquid to enter the turbocharging device 4 so as to boost the gas. So, judge gas inlet pressure through the procedure of gas heater normal operating, need not additionally set up gas pressure detection device 8, alright carry out the pressure boost to the gas, guarantee gas inlet pressure and stability to can guarantee to match best combustion condition, guarantee the temperature and the stability of play water.
Further, after the gas water heater is started normally, if continuous N1 times of ignition is unsuccessful, the gas pressure is judged to be too low. According to the scheme, whether the continuous N times of ignition is successful or not is used for judging the gas inlet pressure, and when the continuous N1 times of ignition is unsuccessful, the gas pressure is judged to be too low, so that the supercharging is performed. Therefore, the accuracy of judgment can be increased, and the judgment error can be reduced.
Preferably, N1 is not less than 2 times. When the two continuous ignition processes are unsuccessful, the gas inlet pressure is judged to be low, and the liquid driving device 5 is controlled to drive liquid to enter the turbocharging device 4 so as to boost the gas.
Further, the turbocharger 4 includes a turbine 41, a driving shaft 42, and a supercharger 43, the turbine 41 is connected with the supercharger 43 through the driving shaft 42, a turbine water inlet pipe 411 and a turbine water outlet pipe 412 are disposed on the turbine 41, the liquid driving device 5 includes a water pump 51, and a water outlet end of the water pump 51 is communicated with the turbine 41 through the turbine water inlet pipe 411;
when the continuous N1 times of ignition of the gas water heater is unsuccessful, the water pump 51 is controlled to be started, water flow pushes the turbine 41 to rotate and then is discharged from the turbine water outlet pipe 412, the turbine 41 drives the booster 43 to operate, the gas is pressurized, the gas inlet pressure and stability are guaranteed, the optimal combustion working condition is guaranteed to be matched, and the temperature and stability of the discharged water are guaranteed.
Different control methods are adopted for the connection modes of different liquid driving devices 5 and the turbocharger device 4, and specifically, the following two methods can be adopted but not limited to:
scheme 1, water pump 51 include two at least water outlet, a water outlet communicates with turbine 41 through turbine inlet tube 411, another water outlet communicates with the water inlet of heat transfer device 7 through first water route 52, the outlet pipe of turbine 41 communicates with first water route 52 through second water route 53, first water route 52 on be provided with first control valve 54, second water route 53 on be provided with second control valve 55.
For this scheme, the control method specifically includes: when the continuous N1 times of ignition of the gas water heater are unsuccessful, the water pump 51 is controlled to be started, the first control valve 54 is closed, the second control valve 55 is opened, the water pump 51 conveys water flow into the turbine 41 and is discharged from the second waterway 53, the turbine 41 is pushed to rotate, the impeller 434 of the booster 43 is driven to rotate, and the gas is pressurized. Therefore, the energy of water resources can be fully utilized, the purpose of pressurizing fuel gas is achieved, the water source is well utilized, and the heated water can be used as bath water, so that the purposes of reducing energy consumption and reducing cost are achieved.
In the scheme 2, a water inlet end of the water pump 51 is provided with a water inlet pipe of the water pump 51, a water outlet end of the water pump 51 is communicated with the turbine 41 through a turbine water inlet pipe 411, and a turbine water outlet pipe 412 is communicated with the water inlet pipe of the water pump 51;
for this scheme, the control method specifically includes: when the continuous N1 times of ignition of the gas water heater is unsuccessful, the water pump 51 is controlled to be started, the water pump 51 drives water to enter the turbine 41, the water flow pushes the turbine 41 to rotate and then returns to the water inlet pipe from the turbine water outlet pipe 412, the turbine 41 drives the supercharger 43 to operate, and the gas in the gas inlet pipeline 3 is supercharged.
This scheme additionally sets up water pump 51, and driven rivers do not communicate with heat transfer device 7. The water pump 51 drives water flow to enter the turbine 41, drives the turbine 41 to run and then flows back to the water inlet pipe of the water pump 51, so that water circulation is formed, the pressurization of fuel gas is realized, and meanwhile, the waste of water resources can be avoided.
For the two schemes, the method also comprises the following steps:
further, after the turbocharger 4 runs for a certain time T, the gas water heater ignites again, if the ignition is successful, the turbocharger 4 is closed, and the combustion is normal; if the ignition is unsuccessful, a fault alarm or prompt is issued.
After the gas water heater is operated and pressurized for a period of time T, if ignition is successful, the gas pressure reaches the pressure of normal operation, the turbocharging device 4 is closed, and normal combustion is performed; if the ignition is still unsuccessful, judging that the cause of the unsuccessful ignition is not insufficient gas inlet pressure, but a fault occurs, and sending out fault alarm or prompt. The issued fault alarm or prompt may prompt the ignition needle problem or the proportional valve problem, prompting the user to check. The mode of giving out fault alarm or prompt can adopt sound alarm, text or pattern prompt, etc.
Further, after the gas supercharging device runs for a certain time T, when the gas water heater ignites again, if continuous N2 times of ignition are unsuccessful, a fault alarm or prompt is sent out. Therefore, the accuracy of judgment can be increased, and the judgment error can be reduced.
Preferably, said N2 is not less than 2 times. When the two continuous ignition processes are unsuccessful, the fault is judged to occur, and a fault alarm or prompt is sent.
Specifically, in the scheme 1, after the turbocharger 4 operates for a certain time T, the gas water heater ignites again, if the ignition is successful, the first control valve 54 is controlled to be opened, the first waterway 52 is conducted, the second control valve 55 is closed, the water flow does not flow through the turbine 41, and the turbocharger 4 stops operating;
alternatively, in the case of the scheme 2, after the turbocharger 4 is operated for a certain period of time T, the gas water heater is ignited again, and if the ignition is successful, the water pump 51 is controlled to stop, and the turbocharger 4 stops operating.
Further, the gas water heater is not successfully ignited again, and after a fault alarm or prompt is sent out, a shutdown action is executed; therefore, potential safety hazards can be avoided, and the situation of causing harm to the surrounding environment is avoided.
Preferably, after a certain time after the gas water heater sends out a fault alarm or prompt, if the instruction of the user is not received, the shutdown action is executed. In the scheme, after a fault alarm or prompt is sent out, a certain time is reserved for a user to operate, if a user instruction is received, the user instruction is acted according to the user instruction, and if the user instruction is not received after a certain time, the shutdown action is executed.
Preferably, the gas water heater is closed to the gas supercharging device, and after a fault alarm or prompt is given, the fault reason and/or times are automatically stored, so that the after-sale quick search of the fault reason of the gas water heater is facilitated to maintain.
Or when the gas water heater is networked, the control device 1 of the gas water heater automatically uploads the fault reasons and/or times to the service background, so that after-sale timely processing and summarizing of fault big data are facilitated.
Further, the booster 43 includes an impeller 434, the turbine 41 is connected to the impeller 434, and the turbine 41 drives the impeller 434 to rotate when rotating, so as to boost the fuel gas; when the continuous N1 times of ignition of the gas water heater is unsuccessful, the water pump 51 is controlled to be started, the water flow drives the turbine 41 to rotate, and the turbine 41 drives the impeller 434 to operate according to the set rotating speed V so as to boost the gas. So, can increase certain pressure to the gas in certain time to guarantee to reach the pressure value that can make the normal ignition burning of gas heater, can also control the operating time of turbocharging device 4 simultaneously, avoid turbocharging device 4 to continue to generate heat, prolong the life of turbocharging device 4, guarantee gas heater's normal operating.
Preferably, the turbine 41 drives the impeller 434 to operate at the maximum rotational speed Vmax, and pressurizes the fuel gas for a certain period of time T. Therefore, the supercharging can be performed in the shortest time and the fastest speed, the waiting time of a user is reduced, the gas inlet pressure is improved, the inlet stability is ensured, and the outlet temperature stability is ensured.
Example IV
As shown in fig. 4, this embodiment is a further limitation of the first embodiment, and this embodiment provides a control method of a pressurized gas water heater, where the gas water heater includes a turbocharger device 4 and a liquid driving device 5, the turbocharger device 4 is disposed on the gas inlet pipeline 3, and the liquid driving device 5 drives the turbocharger device 4 to operate; after the gas water heater is started, if the actual water outlet temperature T does not reach a certain temperature after the gas water heater burns for a certain time, the liquid driving device 5 is controlled to drive liquid to enter the turbocharging device 4, and the operation of the liquid driving device is driven to boost the gas.
The gas water heater of this embodiment includes heat transfer device 7, combustion chamber 2 and gas inlet line 3, and gas inlet line 3 is connected with combustion chamber 2, and gas gets into combustion chamber 2 internal combustion and provides the heat source for heat transfer device 7, and the water in heat transfer device 7 flows from the delivery port after the heat exchange, supplies the user to bathe and uses. After the gas water heater is started, whether the water quantity is normal is firstly detected, and if the water quantity is normal, the gas water heater is started without faults, and ignition and combustion are carried out. Meanwhile, if the actual water outlet temperature T does not reach a certain temperature after combustion for a certain time, the liquid driving device 5 is controlled to drive liquid to enter the turbocharging device 4 so as to drive the operation of the turbocharging device to boost the fuel gas. So, can control the pressure of gas of admitting air, guarantee that gas inlet pressure is stable, be applicable to various combustion conditions, guarantee the temperature and the stability of leaving water, improve user's bathing greatly and experience. In addition, the liquid driving device 5 is adopted to drive the turbocharger device 4 to operate, so that the electric energy consumption can be reduced, and the cost is saved.
Further, the turbocharger 4 includes a turbine 41, a driving shaft 42, and a supercharger 43, the turbine 41 is connected with the supercharger 43 through the driving shaft 42, a turbine water inlet pipe 411 and a turbine water outlet pipe 412 are disposed on the turbine 41, the liquid driving device 5 includes a water pump 51, and a water outlet end of the water pump 51 is communicated with the turbine 41 through the turbine water inlet pipe 411;
if the actual water outlet temperature T does not reach a certain temperature after combustion for a certain time, the water pump 51 is controlled to drive water flow into the turbine 41, the turbine 41 is driven to rotate and then is discharged from the turbine water outlet pipe 412, and the turbine 41 drives the supercharger 43 to operate so as to supercharge the fuel gas.
After the gas water heater is started, whether the water quantity is normal is detected, the starting is judged to be normal after the water quantity is detected to be normal and no fault exists, and ignition is started to burn. After burning for a certain time, detecting the actual outlet water temperature T, if the actual outlet water temperature T does not reach a certain temperature, judging that the inlet gas pressure of the fuel gas is low, and controlling the liquid driving device 5 to drive liquid to enter the turbocharging device 4 so as to boost the fuel gas. So, judge gas inlet pressure through the procedure of gas heater normal operating, need not additionally set up gas pressure detection device 8, alright carry out the pressure boost to the gas, guarantee gas inlet pressure and stability to can guarantee to match best combustion condition, guarantee the temperature and the stability of play water.
In a specific scheme, the water pump 51 includes at least two water outlets, one water outlet is communicated with the turbine 41 through a turbine water inlet pipe 411, the other water outlet is communicated with a water inlet of a heat exchange device 7 of the gas water heater through a first water channel 52, a water outlet pipe of the turbine 41 is communicated with the first water channel 52 through a second water channel 53, a first control valve 54 is arranged on the first water channel 52, and a second control valve 55 is arranged on the second water channel 53;
after the gas water heater is started, the first control valve 54 is controlled to be opened, the second control valve 55 is controlled to be closed, the required lifting number A is calculated according to the water inlet temperature T1, the required water outlet temperature and the water flow q, the required lifting number A is compared with the maximum lifting number B of the gas water heater, a smaller value is selected as a target lifting number, parameters of a proportional valve and/or a fan of the gas water heater are adjusted according to the target lifting number, and then combustion is carried out.
In the present invention, the required outlet water temperature may be the set temperature T2 or the target outlet water temperature T2', and may be determined according to the comparison result between the required number of liters and the maximum number of liters. Preferably, the target rise a= (T2-T1) ×q/25, T2 is the desired outlet water temperature, and T1 is the inlet water temperature.
The rise of the gas water heater in the invention refers to the flow rate of hot water per minute, namely the quantity of hot water which flows out per minute and meets corresponding conditions, and particularly refers to the water yield per minute when the water outlet temperature of the water heater is 25 ℃ higher than the water inlet temperature. After the gas water heater is started, firstly, the required liter number is compared with the maximum liter number, and the target liter number is selected. Therefore, the load exceeding the gas water heater can be avoided, and the safe operation of the water heater is ensured.
Meanwhile, after the target lifting number is selected, firstly, parameters of the proportional valve and/or the fan are adjusted according to the target lifting number, so that the proportional valve and the fan are guaranteed to be in a normal working state, and if wind resistance of the fan, such as reduction of fan current, is found in the combustion process, wind is properly supplemented, and the fan is enabled to normally operate. Therefore, when the outlet water temperature of the gas water heater does not reach a certain temperature, the factors of the proportional valve and the fan are eliminated, so that whether the gas pressure is too low or not can be judged, and further the supercharging is carried out.
The specific scheme at least comprises the following two types:
in the scheme 1, if the required lifting number is not greater than the maximum lifting number B, A is selected as a target lifting number for combustion; detecting the actual water outlet temperature T after burning for a certain time m, and if T reaches or exceeds the set temperature T2, controlling the first control valve 54 to be opened, and controlling the second control valve 55 to be closed for burning; if T does not reach the set temperature T2, the water pump 51 is controlled to be turned on, the first control valve 54 is turned off, the second control valve 55 is turned on, the water pump 51 delivers water flow into the turbine 41 and is discharged from the second water path 53, the turbine 41 is driven to rotate, the impeller 434 of the supercharger 43 is driven to rotate, and the fuel gas is pressurized. Therefore, the gas inlet pressure and stability can be ensured, the optimal combustion working condition is ensured to be matched, the temperature and stability of the outlet water are ensured, and the bathing experience of a user is improved.
Further, when the actual water outlet temperature does not reach the set temperature T2, the difference rise delta between the target rise a and the actual rise is calculated, and the driving parameter of the turbocharger 4 is obtained according to the difference rise delta, and the water pump 51 is controlled to drive the turbine 41 to operate at a corresponding rotation speed.
The control device 1 of the gas water heater is provided with a driving program for controlling the turbocharger device 4 in advance, and the driving parameters at least comprise the rotating speed of the impeller 434 in the supercharger 43. In addition, the driving parameters include the flow rate of the water flow, the rotation speed of the turbine 41, and the like. The relation between the driving parameter and the supercharging amount can be obtained through experiments. Therefore, the pressurizing degree of the fuel gas can be controlled, and the stability of the fuel gas pressure is guaranteed.
Further, when the actual water outlet temperature does not reach the set temperature T2, calculating to obtain a difference temperature delta T between the set temperature T2 and the actual water outlet temperature; after the gas water heater controls the water pump 51 to drive the turbocharger 4 to run for a certain time r, whether the turbocharger 4 is controlled to continue to boost is selected according to the variation value of the difference temperature DeltaT.
After the turbocharger 4 runs for a certain time r, if the difference temperature DeltaT is reduced to a certain extent, that is, the actual outlet water temperature is rapidly increased, and if the difference temperature is obviously reduced, the supercharging is judged to be effective, and the water pump 51 is controlled to drive the turbocharger 4 to continue to run for supercharging; if the difference temperature Δt is not reduced or the degree of reduction does not reach the preset value, that is, after the pressurization, the actual outlet water temperature change is not large, the pressurization is judged to be invalid, the second control valve 55 is closed, and a fault alarm or prompt is sent.
Preferably, after the turbocharger 4 is operated for a certain time r, if the difference temperature Δt is reduced to 2/3 Δt or less, it is determined that the supercharging is effective; if the difference temperature DeltaT is not reduced or is greater than 2/3 DeltaT, the supercharging is judged to be ineffective. More precisely, the comparison formula of the difference temperature DeltaT can be set according to the requirement to judge.
In the scheme 2, if the required lifting number A is larger than the maximum lifting number B, B is selected as a target lifting number, and the target water outlet temperature T2' is obtained through calculation according to the target lifting number B for combustion; detecting the actual outlet water temperature T ' after burning for a certain period of time n, and if T ' reaches or exceeds the target outlet water temperature T2', controlling the first control valve 54 to be opened, and controlling the second control valve 55 to be closed for burning; if T 'does not reach the target water outlet temperature T2', the water pump 51 is controlled to be started, the first control valve 54 is closed, the second control valve 55 is opened, the water pump 51 conveys water flow into the turbine 41 and is discharged from the second waterway 53, the turbine 41 is driven to rotate, the impeller 434 of the supercharger 43 is driven to rotate, and the fuel gas is supercharged;
preferably, the target outlet water temperature T2' =25×b/q+t1.
Further, when the actual water outlet temperature does not reach the target water outlet temperature T2', calculating and obtaining a difference temperature delta T between the target water outlet temperature T2' and the actual water outlet temperature; after the gas water heater controls the water pump 51 to drive the turbocharger 4 to run for a certain time r, whether the turbocharger 4 is controlled to continue to boost is selected according to the variation value of the difference temperature DeltaT.
Further, when the actual water outlet temperature does not reach the target water outlet temperature T2', the difference rise delta between the target rise B and the actual rise is calculated, and the driving parameter of the turbocharger device 4 is obtained according to the difference rise delta, and the water pump 51 is controlled to drive the turbine 41 to operate at a corresponding rotation speed.
Further, after the turbocharger 4 operates for a certain period of time r, if the difference temperature Δt decreases to a certain extent, that is, the actual outlet water temperature rises rapidly, and if the difference temperature decreases significantly, the supercharging is determined to be effective, and the water pump 51 is controlled to drive the turbocharger 4 to continue to operate for supercharging; if the difference temperature DeltaT is not reduced or the reduction degree does not reach the preset value, that is, after the pressurization, the actual outlet water temperature change is not large, the pressurization is judged to be invalid, the problems of heat efficiency reduction caused by heat exchanger blockage or self-failure of the proportional valve and the like of the water heater are considered, the second control valve 55 is closed, and a failure alarm or prompt is sent;
preferably, after the turbocharger 4 is operated for a certain time r, if the difference temperature Δt is reduced to 2/3 Δt or less, it is determined that the supercharging is effective; if the difference temperature DeltaT is not reduced or is greater than 2/3 DeltaT, the supercharging is judged to be ineffective.
Further, whether in the scheme 1 or the scheme 2, the gas water heater judges that the pressurization is invalid, closes the second control valve 55, and executes the shutdown action after giving out a fault alarm or prompt, thereby avoiding the occurrence of a safety problem. Preferably, after a certain time after the gas water heater sends out a fault alarm or prompt, if the instruction of the user is not received, the shutdown action is executed.
Preferably, the gas water heater is closed to automatically store the fault reason and/or the number of times after giving out a fault alarm or prompt; therefore, the after-sale fault cause of the gas water heater can be conveniently and quickly found for maintenance.
Or when the gas water heater is networked, the fault reasons and/or times are automatically uploaded to the service background, so that after-sale timely processing and summarizing of fault big data are facilitated.
The foregoing description is only illustrative of the preferred embodiment of the present invention, and is not to be construed as limiting the invention, but is to be construed as limiting the invention to any and all simple modifications, equivalent variations and adaptations of the embodiments described above, which are within the scope of the invention, may be made by those skilled in the art without departing from the scope of the invention.
Claims (7)
1. The control method of the pressurized gas water heater comprises a heat exchange device, a combustion chamber and a gas inlet pipeline, wherein the gas inlet pipeline is connected with the combustion chamber, and the gas enters the combustion chamber to be combusted to provide a heat source for the heat exchange device;
the turbocharger device comprises a turbine, a driving shaft and a supercharger, wherein the turbine is connected with the supercharger through the driving shaft, and the turbine and the supercharger are coaxially arranged;
the liquid driving device comprises a water pump, a turbine water inlet pipe and a turbine water outlet pipe are arranged on the turbine, and the water outlet end of the water pump is communicated with the turbine through the turbine water inlet pipe; when the gas needs to be pressurized, the water pump drives water to enter the turbine, the water flow pushes the turbine to rotate and then is discharged from the turbine water outlet pipe, and the turbine drives the supercharger to operate so as to pressurize the gas in the gas inlet pipeline;
the water pump comprises at least two water outlet ends, one water outlet end is communicated with the turbine through a turbine water inlet pipe, the other water outlet end is communicated with the water inlet of the heat exchange device through a first waterway, and the water outlet pipe of the turbine is communicated with the first waterway through a second waterway;
The first waterway is provided with a first control valve, and the second waterway and/or the turbine water inlet pipe is provided with a second control valve;
after the gas water heater is started, the first control valve is controlled to be opened, the second control valve is controlled to be closed, the required lifting number A is calculated according to the water inlet temperature T1, the required water outlet temperature and the water flow q, the required lifting number A is compared with the maximum lifting number B of the gas water heater, a smaller value is selected as a target lifting number, and then combustion is carried out;
if the required lifting number is not greater than the maximum lifting number B, selecting A as a target lifting number for combustion; detecting the actual water outlet temperature T after burning for a certain time m, and if T reaches or exceeds the set temperature T2, controlling the first control valve to be opened, and controlling the second control valve to be closed for burning; if the temperature T does not reach the set temperature T2, the water pump is controlled to be started, the first control valve is closed, the second control valve is opened, the water pump conveys water flow to enter the turbine and is discharged from the second waterway, the turbine is driven to rotate, the impeller of the supercharger is driven to rotate, and the fuel gas is pressurized;
if the required lifting number A is larger than the maximum lifting number B, B is selected as a target lifting number, and a target water outlet temperature T2' is obtained through calculation according to the target lifting number B for combustion; detecting the actual outlet water temperature T ' after burning for a certain period of time n, and if T ' reaches or exceeds the target outlet water temperature T2', controlling the first control valve to be opened, and controlling the second control valve to be closed for burning; if the T 'does not reach the target water outlet temperature T2', the water pump is controlled to be started, the first control valve is closed, the second control valve is opened, the water pump conveys water flow to enter the turbine and is discharged from the second waterway, the turbine is pushed to rotate, the impeller of the supercharger is driven to rotate, and the fuel gas is supercharged;
When the actual water outlet temperature does not reach the set temperature T2 or the target water outlet temperature T2', calculating to obtain a difference temperature delta T between the set temperature T2 or the target water outlet temperature T2' and the actual water outlet temperature; after the gas water heater controls the water pump to drive the turbocharging device to run for a certain time r, whether the turbocharging device is controlled to continue to boost is selected according to the change value of the difference temperature delta T.
2. A control method of a pressurized gas water heater according to claim 1, wherein the first control valve and/or the second control valve is a shut-off valve.
3. The control method of the supercharged gas water heater according to claim 1, wherein the supercharger comprises a shell, an impeller is arranged in the shell, the impeller is connected with a turbine through a driving shaft, a supercharger air inlet pipe and a supercharger air outlet pipe are arranged on the shell, and the supercharger air outlet pipe is communicated with the combustion chamber.
4. The control method of a booster gas water heater as defined in claim 3, wherein a ratio adjusting device is arranged between the outlet pipe of the booster and the combustion chamber to adjust the inlet ratio of the gas to the air.
5. The control method of a booster gas water heater as defined in any one of claims 1-4, further comprising a gas pressure detection device, wherein the gas pressure detection device is disposed on a gas inlet pipeline for detecting gas inlet pressure.
6. The method of claim 5, wherein the gas pressure detecting device is disposed on a gas outlet pipe of the supercharger.
7. A control method of a booster gas water heater as defined in any one of claims 1-4, further comprising a control device electrically connected to the gas pressure detection device and/or the water pump and/or the first control valve and/or the second control valve.
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|---|---|
| CN110966760A (en) | 2020-04-07 |
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