CN110966749B - Control method of supercharged gas water heater and gas water heater - Google Patents
Control method of supercharged gas water heater and gas water heater Download PDFInfo
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- CN110966749B CN110966749B CN201811154311.8A CN201811154311A CN110966749B CN 110966749 B CN110966749 B CN 110966749B CN 201811154311 A CN201811154311 A CN 201811154311A CN 110966749 B CN110966749 B CN 110966749B
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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 control method of a supercharged gas water heater and the gas water heater, wherein the gas water heater comprises a turbocharging device and a liquid driving device, the turbocharging device is arranged on a gas inlet pipeline, and the liquid driving device drives the turbocharging device to operate; after the gas water heater is started, if the actual water outlet temperature T does not reach the required temperature after burning for a certain time, the liquid driving device is controlled to drive liquid to enter the turbocharging device, and the turbocharging device is driven to operate to supercharge gas. The control method and the gas water heater can ensure the gas inlet pressure and stability, thereby ensuring the optimal combustion working condition to be matched, ensuring the temperature and stability of outlet water, greatly improving the bathing experience of users, reducing energy consumption and saving cost.
Description
Technical Field
The invention belongs to the field of water heaters, and particularly relates to a control method of a supercharged gas water heater and the gas water heater.
Background
The gas water heater is a quick water heater which burns fuel to transfer heat to water, and is more and more popular with common household users. However, the combustion effect of the gas water heater is limited by the gas supply conditions of the user families, and the phenomenon that the gas water heater cannot work normally occurs due to insufficient gas supply pressure of the total pipe network or insufficient gas supply during the gas consumption peak of some user families, so that the hot water outlet speed and the bathing experience of the user are influenced.
At present, the gas pressure in China is about 3000Pa at most, but the gas pressure is seriously insufficient at the peak time of gas consumption, which inevitably causes the following problems: firstly, the gas pressure may be lower than 1000Pa during the gas consumption peak, which causes that the gas water heater can not be started normally; secondly, according to the working principle of the gas water heater, the hot water outlet speed is directly influenced when the air pressure is small; thirdly, the stability of atmospheric pressure is poor, influences the stability of leaving water temperature, and these all can be directly experienced by the user in use, greatly influence user experience.
At present, no related gas booster water heater product exists in the market, the proportion of gas and air is adjusted only by controlling a proportional valve when the pressure is lower, the pressure stabilization performance of the gas behind the proportional valve is improved by increasing the opening degree of the proportional valve, and the effect of the method is very limited when the pressure of the gas is lower than 1000 Pa. Therefore, a gas water heater capable of pressurizing gas is needed, which can ensure the best combustion condition and ensure the temperature and stability of water outlet, thereby improving the user experience. The present invention has been made in view of this situation.
Disclosure of Invention
The control method controls the gas supercharging device to be turned on/off according to whether the actual water outlet temperature T reaches the required temperature after the water heater burns for a certain time, performs/stops supercharging on gas, and can ensure the gas inlet pressure and stability, thereby ensuring the optimal combustion working condition to be matched, ensuring the temperature and stability of the water outlet, and greatly improving the bathing experience of users.
In order to solve the technical problems, the invention adopts the technical scheme that:
the first purpose of the invention is to provide a control method of a supercharged gas water heater, wherein the gas water heater comprises a turbocharging device and a liquid driving device, the turbocharging device is arranged on a gas inlet pipeline, and the liquid driving device drives the turbocharging device to operate; after the gas water heater is started, if the actual outlet water temperature T does not reach the required temperature after burning for a certain time, the liquid driving device is controlled to drive liquid to enter the turbocharging device, and the turbocharging device is driven to operate to supercharge gas.
According to a further scheme, the turbocharging device comprises a turbine, a driving shaft and a supercharger, wherein the turbine is connected with the supercharger through the driving shaft, a turbine water inlet pipe and a turbine water outlet pipe are arranged on the turbine, the liquid driving device comprises a water pump, and the water outlet end of the water pump is communicated with the turbine through the turbine water inlet pipe;
if the actual outlet water temperature T does not reach the required temperature after the combustion for a certain time, the water pump is controlled to drive water flow to enter the turbine, the turbine is pushed to rotate and then is discharged from the turbine water outlet pipe, and the turbine drives the supercharger to operate to pressurize the gas.
In a further scheme, 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 a water inlet of a heat exchange device of the gas water heater through a first water path, a water outlet pipe of the turbine is communicated with the first water path through a second water path, a first control valve is arranged on the first water path, and a second control valve is arranged on the second water path;
after the gas water heater is started, controlling the first control valve to be opened, closing the second control valve, calculating a required rise number A according to the water inlet temperature T1, the required water outlet temperature and the water flow q, comparing the required rise number A with the maximum rise number B of the gas water heater, selecting a smaller value as a target rise number, and then burning;
preferably, before combustion, parameters of a proportional valve and/or a fan of the gas water heater are adjusted according to the target ascending number.
In the further scheme, if the required liter number is not more than the maximum liter number B, selecting A as a target liter number, and combusting; detecting the actual outlet water temperature T after burning for a certain time m, and if the T reaches or exceeds a set temperature T2, controlling the first control valve to be opened and the second control valve to be closed for burning; if 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 the turbine and discharges the water flow from the second water channel, the turbine is pushed to rotate, an impeller of the supercharger is driven to rotate, and the fuel gas is pressurized.
According to a further scheme, if the required liter number A is larger than the maximum liter number B, selecting B as a target liter number, and calculating according to the target liter number B to obtain a target effluent temperature T2' for combustion; detecting the actual water outlet temperature T ' after burning for a certain time n, and if the T ' reaches or exceeds the target water outlet temperature T2', controlling the first control valve to be opened and the second control valve to be closed for burning; if T 'does not reach the target outlet water 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 into the turbine and discharges the water flow from the second water channel, the turbine is pushed to rotate, an impeller of the supercharger is driven to rotate, and the fuel gas is pressurized;
preferably, the target leaving water temperature T2' =25 × b/q + T1.
According to a further scheme, when the actual outlet water temperature does not reach the set temperature T2 or the target outlet water temperature T2', the difference temperature delta T between the set temperature T2 or the target outlet water temperature T2' and the actual outlet water temperature is obtained through calculation; and after the gas water heater controls the water pump to drive the turbocharging device to operate for a certain time r, selecting whether to control the turbocharging device to continuously supercharge or not according to the change value of the difference temperature delta T.
In a further scheme, when the actual outlet water temperature does not reach the set temperature T2 or the target outlet water temperature T2', the difference increment delta between the target increment A or B and the actual increment is calculated, the driving parameter of the turbocharging device is obtained according to the difference increment delta, and the water pump is controlled to drive the turbine to operate at the corresponding rotating speed.
According to the further scheme, after the turbocharging device operates for a certain time r, if the difference temperature delta T is reduced to a certain degree, the turbocharging is judged to be effective, and the water pump is controlled to drive the turbocharging device to continuously operate and supercharge; if the difference temperature delta T is not reduced or the reduction degree does not reach a preset value, judging that the pressurization is invalid, closing the second control valve, and sending a fault alarm or prompt;
preferably, after the turbocharging device operates for a certain time r, if the difference temperature delta T is reduced to 2/3 delta T and below, the turbocharging is judged to be effective; and if the difference temperature delta T is not reduced or is more than 2/3 delta T, judging that the supercharging is invalid.
According to the further scheme, the gas water heater judges that the pressurization is invalid, closes the second control valve, and executes shutdown action after giving out fault alarm or prompt;
preferably, after the gas water heater gives out a fault alarm or prompts for a certain time, if the instruction of the user is not received, the shutdown action is executed;
preferably, the gas water heater closes the gas supercharging device, and automatically stores fault reasons and/or times after fault alarm or prompt is given; or when the gas water heaters are networked, the fault reason and/or the frequency are/is automatically uploaded to the service background.
The second purpose of the invention is to provide a supercharged gas water heater with the control method, which comprises a heat exchange device, a combustion cavity and a gas inlet pipeline, wherein the gas inlet pipeline is connected with the combustion cavity, and gas enters the combustion cavity to be combusted so as to provide a heat source for the heat exchange device; after the gas water heater is started, if the actual water outlet temperature T does not reach the required temperature after burning for a certain time, the liquid driving device is controlled to drive/close the turbocharging device, and the gas is supercharged/stopped.
After adopting the technical scheme, compared with the prior art, the invention has the following beneficial effects:
1. in the control method, if the actual water outlet temperature T does not reach the required temperature after the water heater burns for a certain time, the liquid driving device is controlled to drive the liquid to enter the turbocharging device to supercharge the gas. So, can guarantee gas admission pressure and stability to guarantee to match best burning operating mode, guarantee the temperature and the stability of water, improve user's bathing greatly and experience.
2. The liquid driving device of the gas water heater can be a water driving device, and can be an independently arranged water pump, and an independent water channel is adopted to convey water flow to the turbocharging device to drive the turbocharging device to operate and supercharge; or the water pump can share the same water pump with the heat exchange device of the gas water heater, 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. In the control method, after the gas water heater is started, the target liter number is selected by comparing the required liter number with the maximum liter number, so that the phenomenon of exceeding the load is avoided, and the running safety of the gas water heater is ensured. Meanwhile, after the target ascending number is selected, parameters of the proportional valve and/or the fan are adjusted according to the target ascending number, the proportional valve and the fan are guaranteed to be in a normal working state, and judgment of whether the gas pressure is too low or not is facilitated, so that pressurization is carried out.
4. In the control method, after the pressurization is carried out for a certain time, whether the pressurization is continued or not is judged according to the change of the difference value between the actual outlet water temperature and the target temperature, if the pressurization is judged to be effective, the pressurization is continued, and if the pressurization is ineffective, the turbocharging device is stopped in time, so that a fault alarm or prompt is carried out. Therefore, the frequency of repeated starting of the turbocharging device can be reduced, the service life of the turbocharging device is prolonged, and the normal operation of the gas water heater is ensured.
The following describes 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, 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 without limiting the invention to the right. It is obvious that the drawings in the following description are only some embodiments and that for a person skilled in the art, other drawings can also be derived from them without inventive effort. In the drawings:
FIG. 1 is a schematic structural view of a gas water heater of the present invention;
FIG. 2 is a flow chart of a control method of a gas water heater according to a second embodiment of the present 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 inlet pipe 411, a turbine outlet pipe 412, a driving shaft 42, a supercharger 43, a shell 431, a supercharger inlet pipe 432, a supercharger outlet pipe 433, an impeller 434, a liquid driving device 5, a water pump 51, a first water path 52, a second water path 53, a first control valve 54, a second control valve 55, a proportional regulating device 6 and a heat exchange device 7.
It should be noted that the drawings and the description are not intended to limit the scope of the inventive concept in any way, but to illustrate it by a person skilled in the art with reference to specific embodiments.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and the following embodiments are used for illustrating the present invention and are not intended to limit the scope of the present invention.
In the description of the present invention, it should be noted that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular 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 otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. The specific meanings of the above terms in the present invention can be understood in a specific case to those of ordinary skill in the art.
Example one
As shown in fig. 1, the embodiment provides a supercharged gas water heater, including heat transfer device 7, combustion chamber 2 and gas air inlet pipeline 3, gas air inlet pipeline 3 is connected with combustion chamber 2, and the gas gets into and burns in the combustion chamber 2 and provides the heat source for heat transfer device 7, still includes turbocharging device 4 and liquid drive arrangement 5, and turbocharging device 4 sets up on gas air inlet pipeline 3, and liquid drive arrangement 5 drives the operation of turbocharging device 4, carries out the pressure boost to gas.
Water such as tap water or filtered water is introduced into a heat exchanger 7 of the gas water heater. The gas enters the combustion chamber 2 through the 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 the required temperature and then discharged for bathing of a user.
The gas inlet pipeline 3 of the invention is provided with a turbocharging device 4, and the liquid driving device 5 can 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 turbocharging device 4, and drives the turbocharging device 4 to rotate, so that the gas is supercharged. The gas water heater disclosed by the invention can be used for pressurizing gas when the gas pressure is low, and ensuring the gas inlet pressure and the gas inlet stability, so that the optimal combustion working condition is matched, the temperature and the stability of the outlet water are ensured, and meanwhile, the liquid driving device 5 can be used for saving the electric energy consumption, reducing the cost and improving the bathing experience of a user.
In a further scheme, the turbocharger device 4 comprises 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, and the supercharger 43 is driven to supercharge the fuel gas in the gas intake pipeline 3 when the turbine 41 rotates.
The turbocharger device 4 comprises at least three parts, a supercharger 43 is arranged on the gas inlet pipeline 3, a turbine 41 is arranged outside the gas inlet pipeline 3, and the turbine 41 is a rotary power machine for converting 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 may be driven to operate, thereby supercharging the gas. The structure can convert the energy of liquid flow into the kinetic energy of the supercharger 43, and the gas supercharging is realized by adopting lower energy consumption.
In a further aspect, the supercharger 43 is a compressor disposed in the gas intake pipeline 3, and includes an impeller 434, and the gas in the pipeline is supercharged through the rapid rotation of the impeller 434. Specifically, the supercharger 43 includes a housing 431, an impeller 434 is disposed in the housing 431, the impeller 434 is connected to the turbine 41 through the driving shaft 42, and a jacket is disposed outside the driving shaft 42. The shell 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 cavity 2. Thus, when the turbine 41 rotates, the impeller 434 is driven to rotate rapidly, so as to compress and pressurize the gas, and the pressurized gas enters the combustion chamber 2 through the gas outlet pipe 433 of the supercharger.
In a further scheme, 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 a 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 that the gas in the gas inlet pipeline 3 is pressurized. Therefore, the energy of water flow is converted into mechanical energy to drive the supercharger 43 to supercharge gas, so that the gas inlet pressure and stability can be guaranteed, the best combustion working condition is guaranteed to be matched, the temperature and the stability of water outlet are guaranteed, meanwhile, certain energy consumption can be saved, and the bathing experience of a user is improved.
In the present embodiment, the connection manner between the hydraulic driving device 5 and the turbocharger device 4 may be, but is not limited to, the following two types:
in scheme 1, the water pump 51 includes at least two water outlet ends, one water outlet end is communicated with the turbine 41 through the turbine water inlet pipe 411, the other water outlet end is communicated with the water inlet of the heat exchanging device 7 through the first water path 52, and the water outlet pipe of the turbine 41 is communicated with the first water path 52 through the second water path 53.
The water supply pump 51 of the conventional gas water heater pumps a common water supply pump 51 such as tap water or purified water into the heat exchanger 7, and the common water supply pump is used after the common water supply pump is heated. In this embodiment, the water pump 51 of the conventional heat exchanger 7 is used to drive the turbine 41 by increasing the water path through the turbine 41. When the supercharging is not needed, the water pump 51 can directly pump the water pump 51 into the first water path 52 and directly enter the heat exchanging device 7, and the turbocharging device 4 does not work. When the water needs to be pressurized, the water is input into the turbine water inlet pipe 411 by the water pump 51, 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 resources can be well utilized, and the water can be used as bathing water after being heated, so that the purposes of reducing energy consumption and reducing cost are achieved.
In a further scheme, a first control valve 54 is arranged on the first water path 52, and a second control valve 55 is arranged on the second water path 53 and/or the turbine water inlet pipe 411. 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 to control the on-off of the water path and the direction of the water flow, so as to open the turbocharger 4 or close the turbocharger 4.
Preferably, the first control valve 54 and/or the second control valve 55 are/is a shut-off valve.
In the scheme 2, a water inlet pipe of the water pump 51 is arranged at a water inlet end of the water pump 51, a water outlet end of the water pump 51 is communicated with the turbine 41 through a turbine inlet pipe 411, and a turbine outlet pipe 412 is communicated with a 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 to pressurize the gas in the gas inlet pipeline 3.
In this scheme, additionally set up water pump 51, 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 gas is pressurized, and waste of water resources is avoided.
In either scheme 1 or scheme 2, when the gas needs to be pressurized, the water flow impulse can be used to push the turbine 41 to rotate, so as to drive the impeller 434 of the coaxial supercharger 43 to rotate and compress the gas, thereby realizing the pressurization of the gas. In the process, the energy of water flow is utilized, and the water resource is also utilized, so that the energy consumption and the cost are reduced, the temperature and the stability of the water outlet temperature of the bathing water are ensured, and the user experience is improved.
Further, the device also comprises a proportion adjusting device 6, wherein the proportion adjusting device 6 is arranged between the supercharger 43 and the combustion chamber 2; the supercharger air outlet pipe 433 of the supercharger 43 is communicated with the air inlet end of the proportion adjusting device 6, and the air outlet end of the proportion adjusting device 6 is communicated with the combustion cavity 2, so that the air inlet proportion of the fuel gas and the air entering the combustion cavity 2 is adjusted. The gas pressurized by the rotation of the impeller 434 of the supercharger 43 enters the proportional control device 6, and is mixed with air in proportion and then enters the combustion chamber 2 for combustion, so that the gas inlet pressure and the water outlet stability are ensured. Wherein the proportional regulating device 6 may be a proportional valve.
The gas pressure detection device is arranged on the gas inlet pipeline 3 and used for detecting the gas inlet pressure. In a preferable scheme, the gas pressure detection device is arranged on the gas outlet pipe 433 of the supercharger.
The gas pressure detection device can be a gas pressure sensor and detects the pressure of gas in the gas inlet pipeline 3 in real time. The gas pressure detection device is arranged at the gas outlet end of the turbocharging device 4, is positioned on a pipeline between the turbocharging device 4 and the combustion chamber 2, and can detect the pressure of gas before and after pressurization.
Further, the device comprises a control device 1, and the control device 1 is electrically connected with a gas pressure detection device 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 turbocharging 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 supercharged.
In addition, the present embodiment further provides a control method for a supercharged gas water heater as described above, which specifically includes:
when the gas water heater judges that 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 judged that the supercharging is not required, the turbocharger device 4 is turned off.
In a further scheme, when the gas water heater works normally and gas pressurization is not needed, the first control valve 54 is controlled to be opened, the second control valve 55 is controlled to be closed, and the first water way 52 is conducted; 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 delivers water flow to enter the turbine 41 and be discharged from the second water channel 53, the turbine 41 is pushed to rotate, the impeller 434 of the supercharger 43 is driven to rotate, and the gas is pressurized.
So, when judging that gas pressure is low excessively, need carry out the pressure boost, can conveniently control rivers through and drive 4 operations of turbo charger, carry out the pressure boost to gas, guarantee gas admission pressure and stability, guarantee the temperature and the stability of going out water.
Example two
As shown in fig. 2, the present embodiment is a further limitation of the first embodiment, and provides a control method of a supercharged gas water heater, the gas water heater includes a turbocharger device 4 and a liquid driving device 5, the turbocharger device 4 is disposed on the gas intake pipe 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 the required temperature after burning for a certain time, the liquid driving device 5 is controlled to drive liquid to enter the turbocharging device 4, and the turbocharging device is driven to operate to supercharge gas.
The gas water heater of this embodiment includes heat transfer device 7, burning chamber 2 and gas inlet line 3, and gas inlet line 3 is connected with burning chamber 2, and the gas gets into 2 internal combustion in burning chamber and burns and provide the heat source for heat transfer device 7, and the water among the heat transfer device 7 flows out 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 or not is detected firstly, if the water quantity is normal, the gas water heater is started without fault, ignition is carried out, and combustion is carried out. Meanwhile, if the actual outlet water temperature T does not reach the required temperature after burning for a certain time, the liquid driving device 5 is controlled to drive liquid to enter the turbo-charging device 4, and the turbo-charging device is driven to operate to boost the gas. The desired temperature is the set temperature or the target temperature. So, can control the pressure of the gas of admitting air, guarantee that the gas admission pressure is stable, be applicable to various burning operating modes, guarantee the temperature and the stability of going out water, improve user's bathing greatly and experience. In addition, the scheme adopts the liquid driving device 5 to drive the turbocharging device 4 to operate, so that the electric energy consumption can be reduced, and the cost is saved.
In a further scheme, the turbocharger device 4 comprises a turbine 41, a drive shaft 42 and a supercharger 43, the turbine 41 is connected with the supercharger 43 through the drive shaft 42, a turbine water inlet pipe 411 and a turbine water outlet pipe 412 are arranged on the turbine 41, the liquid drive device 5 comprises a water pump 51, and the water outlet end of the water pump 51 is communicated with the turbine 41 through the turbine water inlet pipe 411;
if the actual outlet water temperature T does not reach the required temperature after the combustion for a certain period of time, the water pump 51 is controlled to drive water flow to enter the turbine 41, the turbine 41 is pushed to rotate and then discharged from the turbine outlet pipe 412, the turbine 41 drives the supercharger 43 to operate, and the fuel gas is supercharged.
After the gas water heater is started, whether the water quantity is normal or not is detected firstly, the normal starting is judged after the water quantity is normal and no fault exists, and the ignition is started for combustion. And detecting the actual outlet water temperature T after burning for a certain time, judging that the inlet pressure of the gas is low if the actual outlet water temperature T does not reach the required temperature, and controlling the liquid driving device 5 to drive the liquid to enter the turbocharging device 4 to supercharge the gas. So, judge the gas admission pressure through the procedure of gas heater normal work, need not additionally set up gas pressure detection device, alright in order to carry out the pressure boost to the gas, guarantee gas admission pressure and stability to can guarantee to match best burning operating mode, guarantee the temperature and the stability of play water.
In a specific scheme, the water pump 51 comprises at least two water outlet ends, one water outlet end is communicated with the turbine 41 through a turbine water inlet pipe 411, the other water outlet end is communicated with a water inlet of the heat exchange device 7 of the gas water heater through a first water path 52, a water outlet pipe of the turbine 41 is communicated with the first water path 52 through a second water path 53, a first control valve 54 is arranged on the first water path 52, and a second control valve 55 is arranged on the second water path 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 rise number A is calculated according to the inlet water temperature T1, the required outlet water temperature and the water flow q, the required rise number A is compared with the maximum rise number B of the gas water heater, the smaller value is selected as the target rise number, parameters of a proportional valve and/or a fan of the gas water heater are adjusted according to the target rise number, and then combustion is carried out. In the invention, the required outlet water temperature can be a set temperature T2, and can also be a target outlet water temperature T2', and is determined according to the comparison result of the required number of liters and the maximum number of liters. Preferably, the target liter number a = (T2-T1) × q/25, T2 is the desired leaving water temperature, and T1 is the entering water temperature.
The liter number of the gas water heater refers to the flow of hot water per minute, namely the quantity of hot water flowing out per minute and meeting corresponding conditions, and specifically refers to the water yield per minute when the water outlet temperature of the gas 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 a target liter number is selected. So, can avoid surpassing gas heater's load, guarantee the water heater safe operation.
Meanwhile, after the target rise number is selected, firstly, parameters of the proportional valve and/or the fan are adjusted according to the target rise number, 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 current of the fan, is found in the combustion process, wind is supplemented appropriately, so that the fan operates normally. So, can get rid of the factor of proportional valve and fan when gas heater leaving water temperature does not reach the uniform temperature, be favorable to judging whether gas pressure is low excessively, and then carry out the pressure boost.
The specific conditions after selecting the target liter number at least comprise the following two conditions:
in case 1, if the required liter number is not more than the maximum liter number B, selecting A as a target liter number, and combusting; detecting the actual outlet water temperature T after burning for a certain time m, and if the T reaches or exceeds the set temperature T2, controlling the first control valve 54 to be opened and 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 opened, the first control valve 54 is closed, the second control valve 55 is opened, and the water pump 51 delivers water flow to enter the turbine 41 and be discharged from the second water passage 53, so that the turbine 41 is pushed to rotate, the impeller 434 of the supercharger 43 is driven to rotate, and the fuel gas is supercharged. Thereby can guarantee gas admission pressure and stability to guarantee to match best burning operating mode, guarantee the temperature and the stability of water, improve user's bathing and experience.
Further, when the actual outlet water temperature does not reach the set temperature T2, a difference rise number Δ between the target rise number a and the actual rise number is calculated, and the driving parameter of the turbocharger device 4 is obtained according to the difference rise number Δ, 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 include 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 relationship of the driving parameter to the supercharging amount can be obtained by experiment. Therefore, the pressurization degree of the fuel gas can be controlled, and the stability of the fuel gas pressure is favorably ensured.
Further, when the actual outlet water temperature does not reach the set temperature T2, calculating to obtain a difference temperature delta T between the set temperature T2 and the actual outlet water temperature; and after the water pump 51 is controlled by the gas water heater to drive the turbocharging device 4 to operate for a certain time r, whether the turbocharging device 4 is controlled to continuously supercharge or not is selected according to the change value of the difference temperature delta T.
After the turbocharging device 4 operates for a certain time r, if the difference temperature delta T is reduced to a certain degree, namely the actual outlet water temperature is rapidly increased, and the difference temperature is obviously reduced, judging that the turbocharging is effective, and controlling the water pump 51 to drive the turbocharging device 4 to continuously operate and supercharge; if the difference temperature delta T is not reduced or the reduction degree does not reach a preset value, namely after pressurization, the actual outlet water temperature is not changed greatly, the pressurization is judged to be invalid, the second control valve 55 is closed, and a fault alarm or prompt is given out.
Preferably, after the turbocharger device 4 operates for a certain time r, if the difference temperature Δ T is reduced to 2/3 Δ T or less, the supercharging is judged to be effective; and if the difference temperature delta T is not reduced or is more than 2/3 delta T, judging that the supercharging is invalid. More accurately, a comparison formula of the difference temperature delta T can be set according to needs for judgment.
In case 2, if the required liter number A is larger than the maximum liter number B, selecting B as a target liter number, and calculating to obtain a target effluent temperature T2' according to the target liter number B for combustion; detecting the actual water outlet temperature T ' after burning for a certain time n, and if the T ' reaches or exceeds the target water outlet temperature T2', controlling the first control valve 54 to be opened and the second control valve 55 to be closed for burning; if T 'does not reach the target outlet water 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 delivers water flow to enter the turbine 41 and is discharged from the second water channel 53, the turbine 41 is pushed to rotate, the impeller 434 of the supercharger 43 is driven to rotate, and the gas is pressurized;
preferably, the target leaving water temperature T2' =25 × b/q + T1.
Further, when the actual outlet water temperature does not reach the target outlet water temperature T2', calculating to obtain a difference temperature delta T between the target outlet water temperature T2' and the actual outlet water temperature; and after the gas water heater controls the water pump 51 to drive the turbo-charging device 4 to operate for a certain time r, selecting whether to control the turbo-charging device 4 to continuously charge according to the change value of the difference temperature delta T.
Further, when the actual outlet water temperature does not reach the target outlet water temperature T2', a difference rise Δ between the target rise B and the actual rise is calculated, and a driving parameter of the turbocharger 4 is obtained according to the difference rise Δ, and the water pump 51 is controlled to drive the turbine 41 to operate at a corresponding rotation speed.
In a further scheme, after the turbocharging device 4 operates for a certain time r, if the difference temperature delta T is reduced to a certain degree, namely the actual outlet water temperature is rapidly increased, and the difference temperature is obviously reduced, the turbocharging is judged to be effective, and the water pump 51 is controlled to drive the turbocharging device 4 to continuously operate and supercharge; if the difference temperature delta T is not reduced or the reduction degree does not reach a preset value, namely after pressurization, the change of the actual outlet water temperature is not large, the pressurization is judged to be invalid, the problems that the heat exchanger is blocked, the heat efficiency is reduced, the proportional valve per se fails and the like exist in the water heater are considered, the second control valve 55 is closed, and a failure alarm or prompt is sent out;
preferably, after the turbocharging device 4 operates for a certain time r, if the differential temperature Δ T is reduced to 2/3 Δ T or less, the turbocharging is judged to be effective; and if the difference temperature delta T is not reduced or is more than 2/3 delta T, judging that the supercharging is invalid.
Further, in case 1 or case 2, the gas water heater determines that pressurization is invalid, closes the second control valve 55, and executes shutdown after giving a fault alarm or prompt, thereby avoiding a safety problem. Preferably, after the gas water heater gives out a fault alarm or prompts for a certain time, if the instruction of the user is not received, the shutdown action is executed.
Preferably, the gas water heater closes the gas supercharging device, and automatically stores fault reasons and/or times after giving fault alarm or prompt; therefore, the gas water heater can be conveniently maintained by quickly searching the failure reason after sale.
Or when the gas water heaters are networked, the fault reasons and/or the frequency are/is automatically uploaded to the service background, so that after-sale timely processing and fault big data summarization are facilitated.
In addition, the embodiment also provides a supercharged gas water heater with the control method, 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, and gas enters the combustion chamber 2 to be combusted so as to provide a heat source for the heat exchange device 7, and the supercharged gas water heater is characterized by further comprising a turbocharging device 4 and a liquid driving device 5, wherein 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; after the gas water heater is started, if the actual outlet water temperature T does not reach the required temperature after burning for a certain time, the liquid driving device 5 is controlled to drive/close the turbocharging device 4, and the gas is supercharged/stopped. So, can conveniently control rivers through and drive 4 operations of turbo charger, carry out the pressure boost to gas, guarantee gas admission pressure and stability, guarantee the temperature and the stability of play water.
Although the present invention has been described with reference to a preferred embodiment, it should be understood that various changes, substitutions and alterations can be made herein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (10)
1. The control method of the supercharged gas water heater is characterized in that the gas water heater comprises a turbocharging device and a liquid driving device, wherein the turbocharging device is arranged on a gas inlet pipeline, and the liquid driving device drives the turbocharging device to operate; after the gas water heater is started, if the actual outlet water temperature T does not reach the required temperature after burning for a certain time, controlling the liquid driving device to drive liquid to enter the turbocharging device and driving the turbocharging device to operate so as to supercharge gas;
the turbine supercharging device comprises a turbine, a driving shaft and a supercharger, the turbine is connected with the supercharger through the driving shaft, a turbine water inlet pipe and a turbine water outlet pipe are arranged on the turbine, the liquid driving device comprises a water pump, and the water outlet end of the water pump is communicated with the turbine through the turbine water inlet pipe; 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 a water inlet of a heat exchange device of the gas water heater through a first water path, a water outlet pipe of the turbine is communicated with the first water path through a second water path, a first control valve is arranged on the first water path, and a second control valve is arranged on the second water path;
after the gas water heater is started, controlling the first control valve to be opened, closing the second control valve, calculating a required rise number A according to the water inlet temperature T1, the required water outlet temperature and the water flow q, comparing the required rise number A with the maximum rise number B of the gas water heater, selecting a smaller value as a target rise number, and then burning;
if the required liter number is not larger than the maximum liter number B, selecting A as a target liter number, and combusting; detecting the actual outlet water temperature T after burning for a certain time m, and if the T reaches or exceeds a set temperature T2, controlling the first control valve to be opened and the second control valve to be closed for burning; if the 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 discharge the water flow from the second water path, the turbine is pushed to rotate, an impeller of the supercharger is driven to rotate, and the fuel gas is pressurized;
if the required liter number A is larger than the maximum liter number B, selecting B as a target liter number, and calculating to obtain a target effluent temperature T2' according to the target liter number B for combustion; detecting the actual water outlet temperature T ' after burning for a certain time n, and if the T ' reaches or exceeds the target water outlet temperature T2', controlling the first control valve to be opened and the second control valve to be closed for burning; if T 'does not reach the target outlet water 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 into the turbine and discharges the water flow from the second water channel, the turbine is pushed to rotate, an impeller of the supercharger is driven to rotate, and the fuel gas is pressurized;
when the actual outlet water temperature does not reach the set temperature T2 or the target outlet water temperature T2', calculating to obtain the difference temperature delta T between the set temperature T2 or the target outlet water temperature T2' and the actual outlet water temperature; and after the gas water heater controls the water pump to drive the turbocharging device to operate for a certain time r, selecting whether to control the turbocharging device to continuously supercharge or not according to the change value of the difference temperature delta T.
2. Control method according to claim 1, characterized in that before combustion, the parameters of the proportional valve and/or the fan of the gas water heater are adjusted according to the target rise.
3. The control method according to claim 1, characterized in that the target leaving water temperature T2' =25 × b/q + T1.
4. The control method according to any one of claims 1 to 3, wherein when the actual outlet water temperature does not reach the set temperature T2 or the target outlet water temperature T2', a difference rise number Δ between the target rise number A or B and the actual rise number is calculated, and the driving parameter of the turbocharger device is obtained according to the difference rise number Δ, and the water pump is controlled to drive the turbine to operate at a corresponding rotating speed.
5. The control method according to any one of claims 1 to 3, characterized in that after the turbocharging device operates for a certain time r, if the difference temperature Δ T is reduced to a certain degree, the supercharging is judged to be effective, and the water pump is controlled to drive the turbocharging device to continue to operate and supercharge; if the difference temperature delta T is not reduced or the reduction degree does not reach a preset value, judging that the pressurization is invalid, closing the second control valve, and giving out a fault alarm or prompt.
6. The control method according to claim 5, wherein the turbocharging device is operated for a certain time r, and if the difference temperature Δ T is reduced to 2/3 Δ T or less, the supercharging is judged to be effective; and if the difference temperature delta T is not reduced or is more than 2/3 delta T, judging that the supercharging is invalid.
7. The control method according to claim 5, wherein the gas water heater judges that the pressurization is invalid, closes the second control valve, and executes a shutdown action after giving a fault alarm or prompt.
8. The control method according to claim 7, wherein after a certain time after the gas water heater gives a fault alarm or prompts, if no instruction of a user is received, the shutdown action is executed.
9. The control method according to claim 7, wherein the gas water heater shuts down the gas booster, and automatically stores the failure reason and/or the failure frequency after giving a failure alarm or prompt; or when the gas water heaters are networked, the fault reason and/or the frequency are/is automatically uploaded to the service background.
10. A booster gas water heater with the control method of any one of claims 1 to 9, comprising a heat exchange device, a combustion chamber and a gas inlet pipeline, wherein the gas inlet pipeline is connected with the combustion chamber, and gas enters the combustion chamber to be combusted to provide a heat source for the heat exchange device; after the gas water heater is started, if the actual outlet water temperature T does not reach the required temperature after burning for a certain time, the liquid driving device is controlled to drive/close the turbocharging device, and the gas is pressurized/stopped.
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| CN2639792Y (en) * | 2003-06-14 | 2004-09-08 | 李翔 | Gas heating/hot water dual purpose boiler |
| CN101424447B (en) * | 2008-10-07 | 2011-02-02 | 艾欧史密斯(中国)热水器有限公司 | Mixed energy thermostatic control water heater |
| JP2014102030A (en) * | 2012-11-20 | 2014-06-05 | Panasonic Corp | Heat-pump hot water supply device |
| CN104296386B (en) * | 2013-07-18 | 2019-01-08 | 海尔集团公司 | Control method, control system and the gas heater of gas heater |
| CN106556151B (en) * | 2015-09-30 | 2019-10-01 | 青岛经济技术开发区海尔热水器有限公司 | A kind of fuel gas of fuel gas water heater automatic pressure unit and method |
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