CN112178946A - Control method of composite energy hot water system and composite energy hot water system - Google Patents
Control method of composite energy hot water system and composite energy hot water system Download PDFInfo
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- CN112178946A CN112178946A CN202011137452.6A CN202011137452A CN112178946A CN 112178946 A CN112178946 A CN 112178946A CN 202011137452 A CN202011137452 A CN 202011137452A CN 112178946 A CN112178946 A CN 112178946A
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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
- F24H9/2035—Arrangement or mounting of control or safety devices for water heaters using fluid fuel
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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
- F24H4/00—Fluid heaters characterised by the use of heat pumps
- F24H4/02—Water 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
- F24H9/00—Details
- F24H9/20—Arrangement or mounting of control or safety devices
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
- F24S10/00—Solar heat collectors using working fluids
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/40—Solar thermal energy, e.g. solar towers
- Y02E10/44—Heat exchange systems
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- Sustainable Energy (AREA)
- Heat-Pump Type And Storage Water Heaters (AREA)
Abstract
The invention creatively discloses a control method of a composite energy hot water system, which comprises the following steps: s10, judging whether the outlet water temperature of the non-gas water heater is greater than a target temperature-lambda, if so, executing S20, and otherwise, executing S30; s20, conducting a water outlet pipe and a bypass pipe of the non-gas water heater; s30, conducting a water outlet pipe of the non-gas water heater and a water inlet pipe of the gas water heater; automatically adjusting the air inflow of the gas water heater, judging whether the water outlet temperature is equal to the target temperature, and if not, executing S40; s40, judging the air inflow of the gas water heater, executing S50 if the air inflow is at the maximum load, and executing S60 if the air inflow is at the minimum load; s50, reducing the water inlet flow of the gas water heater; and S60, increasing the water inlet flow of the gas water heater. Through the steps, the gas water heater and the non-gas water heater are effectively combined for use, so that the purposes of high heat efficiency, environmental protection and hot water enjoying at any time are achieved. Meanwhile, the invention also provides a composite energy hot water system.
Description
Technical Field
The invention relates to the field of hot water systems, in particular to a control method of a composite energy hot water system and the composite energy hot water system.
Background
The existing water heaters on the market are mainly gas water heaters, electric water heaters, solar water heaters and air energy water heaters, wherein the solar water heaters and the air energy water heaters have the advantages of high thermal efficiency and environmental protection, but are limited by weather conditions when used, and have poor hot water effect when used in rainy days or cold seasons; the gas water heater is not affected by the environment, and a user can enjoy comfortable hot water at any time, but compared with a solar water heater and an air energy water heater, the gas water heater has low heat efficiency and is not environment-friendly. If the gas water heater can be effectively combined with a solar water heater or an air energy water heater, the defects in the prior art can be overcome.
Summary of the invention
The present invention is directed to a control method for a hybrid energy hot water system, which solves one or more of the problems of the prior art and provides at least one of the advantages of the present invention.
The invention also provides a composite energy hot water system.
According to the control method of the composite energy hot water system of the embodiment of the first aspect of the invention, the control method comprises a gas water heater, a non-gas water heater and an electric three-way valve, wherein a water outlet pipe of the gas water heater is connected with a bypass pipe, and the electric three-way valve is respectively connected with the bypass pipe, a water inlet pipe of the gas water heater and a water outlet pipe of the non-gas water heater;
the control method of the hybrid energy hot water system further comprises the following steps:
s10, judging whether the water outlet temperature of the non-gas water heater is greater than or equal to a target temperature-lambda, if so, executing S20, and if not, executing S30;
s20, communicating a water outlet pipe of the non-gas water heater with a bypass pipe through an electric three-way valve, and stopping the water outlet pipe of the non-gas water heater and a water inlet pipe of the gas water heater;
s30, conducting a water outlet pipe of the non-gas water heater and a water inlet pipe of the gas water heater through an electric three-way valve, and stopping the water outlet pipe of the non-gas water heater and a bypass pipe at the moment; automatically adjusting the gas intake amount of the gas water heater, judging whether the water outlet temperature of the gas water heater is equal to the target temperature, if so, keeping the water inlet flow of the gas water heater, and if not, executing S40;
s40, judging the gas intake amount of the gas water heater, if the gas intake amount of the gas water heater is at the maximum load, executing S50, and if the gas intake amount of the gas water heater is at the minimum load, executing S60;
s50, gradually reducing the inflow of the gas water heater by the electric three-way valve to enable the outlet water temperature of the gas water heater to gradually rise and approach to a target temperature;
and S60, gradually increasing the water inlet flow of the gas water heater by the electric three-way valve, so that the water outlet temperature of the gas water heater gradually decreases and approaches to the target temperature.
It should be noted that the non-gas water heater is generally a solar water heater or an air energy water heater, but the invention is not limited to this, and the non-gas water heater may also be an electric water heater.
The control method of the composite energy hot water system according to the embodiment of the invention at least has the following beneficial effects: when the water outlet temperature of the non-gas water heater is greater than or equal to the target temperature-lambda, the electric three-way valve conducts a water outlet pipe of the non-gas water heater with the bypass pipe, so that the gas water heater is prevented from secondarily heating hot water; when the water outlet temperature of the non-gas water heater is lower than the target temperature-lambda, the electric three-way valve conducts the water outlet pipe of the non-gas water heater and the water inlet pipe of the gas water heater, the gas water heater is involved in working at the moment, the constant-temperature water outlet is realized by executing the steps from S30 to S60, the gas water heater and the non-gas water heater are effectively combined for use, and the composite energy water heating system has the advantages of high heat efficiency, environmental protection and capability of enjoying hot water at any time.
According to some embodiments of the invention, after S60, when the water inlet flow of the gas water heater is at the maximum value, if the water outlet temperature of the gas water heater is still greater than or equal to the target temperature + β, it is determined whether the duration of the water outlet temperature is greater than or equal to α seconds.
According to some embodiments of the invention, if the duration is longer than or equal to α seconds, the electric three-way valve conducts the water outlet pipe of the non-gas water heater with the bypass pipe, and at the moment, the water outlet pipe of the non-gas water heater is cut off from the water inlet pipe of the gas water heater. This situation is typically applied in summer, i.e. when the gas water heater is at minimum load, if its outlet water temperature is still higher than the target temperature + β and lasts for more than α seconds, then the gas water heater can be deactivated.
According to some embodiments of the invention, the gas water heater is kept in minimum load operation if the duration is less than α seconds. In order to avoid the influence of the fluctuation of the outlet water temperature on the judgment result, time delay setting is generally needed.
According to some embodiments of the invention, β is a positive integer with temperature units, and β is 1 ℃ ≦ β ≧ 4 ℃. The value of β can be preset by the manufacturer.
According to some embodiments of the invention, 10 ≦ α ≧ 20. The value of alpha is not suitable to be too small or too large, when the value of alpha is too small, the influence of water temperature fluctuation is difficult to eliminate, and when the value of alpha is too large, the water using experience of a user is influenced.
According to some embodiments of the invention, λ is a positive integer with temperature units, and λ is 1 ℃ ≦ λ ≧ 5 ℃. The value of λ can be preset by the manufacturer.
According to the invention, the composite energy hot water system comprises:
the non-gas water heater is provided with a first water inlet pipe and a first water outlet pipe;
the gas water heater is provided with a second water inlet pipe and a second water outlet pipe, and the second water outlet pipe is connected with a bypass pipe;
the electric three-way valve comprises a valve body, wherein a water inlet channel, a water outlet channel, a bypass channel and a valve core controlled by a driving device are arranged in the valve body, the water inlet channel is connected with the first water outlet pipe, the water outlet channel is connected with the second water inlet pipe, and the bypass channel is connected with the bypass pipe; the valve core is provided with a main through station and a bypass station, when the valve core is positioned at the main through station, the water inlet channel is communicated with the water outlet channel, when the valve core is positioned at the bypass station, the water inlet channel is communicated with the bypass channel, and when the valve core is positioned at the main through station, the valve core can adjust the through-flow rate between the water inlet channel and the water outlet channel;
the water inlet temperature sensing probe is arranged on the water inlet channel or the first water outlet pipe;
the water flow sensor is arranged on the water outlet channel or the second water inlet pipe;
and the water outlet temperature sensing probe is arranged on the second water outlet pipe.
The composite energy hot water system according to the embodiment of the invention has at least the following beneficial effects: adopt behind the electric three-way valve, gas heater can carry out the combined use with non-gas heater better to reach the purpose that the thermal efficiency is high, the environmental protection, enjoy comfortable hot water at any time.
According to some embodiments of the invention, the water outlet channel is provided with a first channel opening, the bypass channel is provided with a second channel opening, the water inlet channel is communicated with the water outlet channel through the first channel opening, and the water inlet channel is communicated with the bypass channel through the second channel opening. The first passage opening and the second passage opening are used for being matched with the valve core.
According to some embodiments of the invention, the valve core comprises a moving shaft, a first plug part and a second plug part, the first plug part and the second plug part are both fixedly connected to the moving shaft, the moving shaft is connected with the driving device, and the driving device controls the moving shaft to move linearly, so that the first plug part and the second plug part can respectively open and close the first passage port and the second passage port; the first plug portion is provided with an adjusting section, the adjusting section faces the first channel opening, the adjusting section is used for adjusting the through-flow between the water inlet channel and the water outlet channel, and the gas water heater can control the water outlet temperature through the size of the through-flow. When the first plug part closes the first passage port, the second plug part opens the second passage port, and the valve core is positioned at a bypass station; when the first plug part opens the first passage port, the second plug part closes the second passage port, and the valve core is at a main communicating station.
A computer-readable storage medium according to an embodiment of the third aspect of the invention has stored thereon a control program that, when executed by a processor, implements the steps of the control method of the hybrid energy hot water system described above.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
fig. 1 is a control flow chart of a hybrid energy hot water system according to an embodiment of the present invention;
fig. 2 is a schematic structural view of a hybrid energy hot water system according to an embodiment of the present invention;
fig. 3 is another structural schematic view of a hybrid energy hot water system according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of an electric three-way valve according to an embodiment of the invention.
Detailed Description
Reference will now be made in detail to the embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of illustrating the invention and are not to be construed as limiting the invention.
In the description of the present invention, it should be understood that the orientation or positional relationship referred to in the description of the orientation, such as up, down, front, rear, left, right, etc., is the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of the description of the present invention, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
In the description of the invention, the meaning of a plurality of the terms is one or more, the meaning of a plurality of the terms is two or more, and the terms larger, smaller, larger, etc. are understood to include no essential numbers, and the terms larger, smaller, etc. are understood to include essential numbers. If the first and second are described for the purpose of distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.
In the description of the present invention, unless otherwise explicitly defined, terms such as setup, installation, connection, and the like should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the terms in the present invention in combination with the detailed contents of the technical solutions.
As shown in fig. 1, the control method of the hybrid energy hot water system according to the embodiment of the first aspect of the invention includes a gas water heater 20, a non-gas water heater 30, and an electric three-way valve 10, wherein an outlet pipe of the gas water heater 20 is connected to a bypass pipe 25, an inlet pipe of the gas water heater 20, and an outlet pipe of the non-gas water heater 30 are respectively connected to the electric three-way valve 10, the electric three-way valve 10 can conduct the bypass pipe 25 or the inlet pipe of the gas water heater 20 to the outlet pipe of the non-gas water heater 30 according to an instruction of a controller, and when the inlet pipe of the gas water heater 20 is conducted to the outlet pipe of the non-gas water heater 30, the electric three-way valve 10 can. It should be noted that the non-gas water heater 30 is generally a solar water heater or an air energy water heater, but the invention is not limited thereto, and the non-gas water heater 30 may also be an electric water heater.
Through the arrangement, the control method of the composite energy hot water system comprises the following steps:
1. and judging whether the water outlet temperature of the non-gas water heater 30 is greater than or equal to a target temperature-lambda, wherein the target temperature is the water temperature set by a user, lambda is a positive integer with a temperature unit, lambda is greater than or equal to 1 ℃ and greater than or equal to 5 ℃, the value of lambda is preset by a manufacturer, and the lambda is set so as to use the water heated by the non-gas water heater 30 as much as possible. In order to detect the water outlet temperature of the non-gas water heater 30, a water inlet temperature sensing probe 200 may be disposed in the electric three-way valve 10 or in the water outlet pipe of the non-gas water heater 30, when the temperature detected by the water inlet temperature sensing probe 200 is greater than or equal to a target temperature- λ, which means that the water outlet temperature of the non-gas water heater 30 is at a higher temperature level, the controller of the gas water heater 20 conducts the water outlet pipe of the non-gas water heater 30 with the bypass pipe 25 through the electric three-way valve 10, and the water outlet pipe of the non-gas water heater 30 is cut off from the water inlet pipe of the gas water heater 20, at this time, the gas water heater 20 does not work, the water heated by the non-gas water heater 30 is directly used by. However, when the temperature detected by the water inlet temperature sensing probe 200 is lower than the target temperature- λ, which means that the water outlet temperature of the non-gas water heater 30 is at a lower temperature level, the controller of the gas water heater 20 conducts the water outlet pipe of the non-gas water heater 30 with the water inlet pipe of the gas water heater 20 through the electric three-way valve 10, but the water outlet pipe of the non-gas water heater 30 is cut off with the bypass pipe 25, and at this time, the gas water heater 20 is involved in operation.
2. After the gas water heater 20 is operated, the controller of the gas water heater 20 automatically adjusts the gas intake amount of the gas water heater 20 according to the difference between the target temperature and the water outlet temperature, so that the water outlet temperature of the gas water heater 20 is close to the target temperature. In order to detect the outlet water temperature of the gas water heater 20, an outlet water temperature sensing probe 24 may be disposed in the outlet pipe of the gas water heater 20, and when the temperature detected by the outlet water temperature sensing probe 24 is equal to the target temperature, the gas water heater 20 maintains the gas inlet air quantity and the inlet water flow quantity, and continuously outputs constant temperature hot water to the outside. However, when the temperature detected by the outlet temperature sensing probe 24 cannot reach the target temperature, no matter the outlet temperature of the gas water heater 20 is higher or lower than the target temperature, the gas water heater 20 starts to determine the limit of the gas inlet amount.
3. When the gas inflow of the gas water heater 20 is at the maximum load, if the outlet water temperature of the gas water heater 20 is still lower than the target temperature, the controller of the gas water heater 20 cannot continuously increase the gas inflow, so that the outlet water temperature can only be increased by decreasing the inlet water flow of the gas water heater 20. Therefore, the controller of the gas water heater 20 gradually reduces the inflow rate of the gas water heater 20 through the electric three-way valve 10, so that the temperature of the outlet water of the gas water heater 20 gradually rises and approaches to a target temperature, and when the temperature detected by the outlet water temperature sensing probe 24 is equal to the target temperature, the gas water heater 20 maintains the gas inflow rate and the inflow rate of the gas, and continuously outputs constant-temperature hot water to the outside, which is generally applied to autumn and winter, and the water temperature set by the user generally exceeds 50 ℃. The water inflow rate of the gas water heater 20 has a minimum value, and in order to ensure the normal use of the gas water heater 20, the minimum value is not 0, and when the water inflow rate of the gas water heater 20 is smaller than the minimum value, the gas water heater 20 stops working at this time; in order to detect the inflow water rate of the gas water heater 20, a water flow rate sensor 300 may be provided in the electric three-way valve 10 or in the inlet pipe of the gas water heater 20. It will be appreciated that since the target temperature setting has an upper limit, there is no chance that the outlet water temperature of the gas water heater 20 will remain below the target temperature when it is at maximum load.
4. When the gas intake amount of the gas water heater 20 is at the minimum load, if the outlet water temperature of the gas water heater 20 is still higher than the target temperature, the outlet water temperature can only be reduced by adjusting the inlet water flow of the gas water heater 20 to be higher because the controller of the gas water heater 20 cannot continuously adjust the gas intake amount to be lower. For this reason, the controller of the gas water heater 20 gradually increases the inflow rate of the gas water heater 20 through the electric three-way valve 10, so that the temperature of the outlet water of the gas water heater 20 gradually decreases and approaches to the target temperature, and when the temperature detected by the outlet water temperature sensing probe 24 is equal to the target temperature, the gas water heater 20 maintains the gas inflow rate and the inflow rate, and continuously outputs constant temperature hot water to the outside, which is generally applied in summer, and the water temperature set by the user is about 35 ℃. The water inlet flow of the gas water heater 20 has a maximum value, and the maximum value is the same as the water outlet flow of the non-gas water heater 30, but when the water inlet flow of the gas water heater 20 is at the maximum value, if the water outlet temperature of the gas water heater 20 is not greater than the target temperature + β at this time, the gas water heater 20 keeps the minimum load operation, once the water outlet temperature of the gas water heater 20 is still greater than or equal to the target temperature + β and continues to be greater than or equal to α seconds, in order to prevent the user from being scalded, the controller of the gas water heater 20 conducts the water outlet pipe of the non-gas water heater 30 with the bypass pipe 25 through the electric three-way valve 10. Wherein beta is a positive integer with a temperature unit, beta is more than or equal to 4 ℃ and more than or equal to 1 ℃, the value of beta is preset by a manufacturer, and the purpose of setting beta is to provide a control margin; in order to avoid the influence of the fluctuation of the outlet water temperature on the judgment result, generally, time delay setting is needed, the value of α should not be too small or too large, when the value of α is too small, the influence of the fluctuation of the water temperature is difficult to eliminate, when the value of α is too large, the water use experience of a user is influenced, and in this embodiment, α is more than or equal to 10 and is more than or equal to 20. It is understood that when the inflow water rate of the gas water heater 20 is at the maximum and the outflow water temperature of the gas water heater 20 is greater than or equal to the target temperature + β, the gas water heater 20 is kept in the minimum load operation during this period, because it is difficult to judge whether there is a fluctuation in the water temperature until the situation lasts less than α seconds.
It should be noted that the maximum load of the gas water heater 20 refers to the working load when the gas intake amount is at the maximum load and the water inflow amount is at the minimum, and the minimum load of the gas water heater 20 refers to the working load when the gas intake amount is at the minimum load and the water inflow amount is at the maximum.
Through the steps, the composite energy hot water system combined by the gas water heater 20 and the non-gas water heater 30 can constantly keep constant temperature water outlet, meets the hot water supply requirement of users, and has the advantages of high thermal efficiency, environmental protection and capability of enjoying hot water at any time.
As shown in fig. 2, the hybrid energy hot water system according to the second embodiment of the present invention can implement the control method of the hybrid energy hot water system according to the first embodiment, wherein the hybrid energy hot water system includes a non-gas water heater 30, a gas water heater 20 and an electric three-way valve 10, the non-gas water heater 30 is provided with a first water inlet pipe 31 and a first water outlet pipe 32, the first water inlet pipe 31 is connected to a tap water pipe, and the first water outlet pipe 32 is used for outputting water heated by the non-gas water heater 30; the gas water heater 20 is provided with a second water inlet pipe 21 and a second water outlet pipe 22, the second water outlet pipe 22 is provided with a water outlet temperature sensing probe 24, the second water outlet pipe 22 is connected with an external water using device, the second water outlet pipe 22 is connected with a bypass pipe 25, and water entering from the second water inlet pipe 21 is heated by a heat exchanger 23 of the gas water heater 20 and then is changed into hot water and is output to the second water outlet pipe 22.
As shown in fig. 2 and 4, the electric three-way valve 10 includes a valve body 100, the valve body 100 is provided with a water inlet passage 110, a water outlet passage 120 and a bypass passage 130, which are communicated with each other, and a valve cavity is formed among the water inlet passage 110, the water outlet passage 120 and the bypass passage 130; the water inlet passage 110 is connected with the first water outlet pipe 32 of the non-gas water heater 30, the water outlet passage 120 is connected with the second water inlet pipe 21 of the gas water heater 20, and the bypass passage 130 is connected with the bypass pipe 25, so that the electric three-way valve 10 can control the on-off of different pipelines. In order to improve the integration of the electric three-way valve 10 and reduce the risk of water leakage or leakage in the water path, the water inlet channel 110 is provided with a water inlet temperature sensing probe 200, the water inlet temperature sensing probe 200 is used for detecting the water outlet temperature of the non-gas water heater 30, the water outlet channel 120 is provided with a water flow sensor 300, and the water flow sensor 300 is used for detecting the water inlet flow of the gas water heater 20. Further, the water outlet passage 120 is provided with a first passage port 121, the bypass passage 130 is provided with a second passage port 131, the water inlet passage 110 is communicated with the water outlet passage 120 through the first passage port 121, and the water inlet passage 110 is communicated with the bypass passage 130 through the second passage port 131. In addition, a valve element 500 controlled by the driving device 400 is disposed in the valve body 100, the valve element 500 is specifically located in the valve cavity, the valve element 500 includes a moving shaft 510, a first plug portion 520 and a second plug portion 530, the first plug portion 520 and the second plug portion 530 are both fixedly connected to the moving shaft 510, a distance between the first plug portion 520 and the second plug portion 530 is not changed, the first plug portion 520 is used for being matched with the first passage port 121, and the second plug portion 530 is used for being matched with the second passage port 131. The moving shaft 510 is connected to the driving device 400, and the driving device 400 may be a stepping motor, and the stepping motor can control the moving shaft 510 to move linearly, so that the first plug 520 and the second plug 530 can open and close the first passage opening 121 and the second passage opening 131, respectively. When the first plug portion 520 closes the first passage port 121, the second plug portion 530 opens the second passage port 131, and the valve element 500 is in a bypass position; when the first plug portion 520 opens the first port 121, the second plug portion 530 closes the second port 131, and the valve element 500 is in a main passage position.
When the outlet water temperature of the non-gas water heater 30 is higher than the target temperature- λ, the valve core 500 in the valve body 100 is switched to the bypass station under the driving of the driving device 400, and at this time, the water inlet channel 110 is communicated with the bypass channel 130, and the water inlet channel 110 is not communicated with the water outlet channel 120, so that the high-temperature water does not flow through the water flow sensor 300 and the heat exchanger 23 of the gas water heater 20, thereby preventing the gas water heater 20 from secondarily heating the high-temperature water and effectively protecting the water flow sensor 300; when the outlet water temperature of the non-gas water heater 30 is lower than the target temperature- λ, the valve core 500 in the valve body 100 is switched to the main communication station under the driving of the driving device 400, and at this time, the water inlet passage 110 is communicated with the outlet water passage 120, and the water inlet passage 110 is not communicated with the bypass passage 130, so that the gas water heater 20 can secondarily heat the warm water, and the normal supply of the hot water is ensured.
In some embodiments of the present invention, in order to simplify the structure of the valve core 500, the first passage port 121 and the second passage port 131 are coaxially disposed, and the movable shaft 510 has a linear structure. In addition, the stepping motor is connected with a transmission mechanism 410 in a transmission manner, and the transmission mechanism 410 drives the moving shaft 510 to rotate; meanwhile, a shaft sleeve 600 is fixedly connected to the inside of the valve body 100, the shaft sleeve 600 is sleeved outside the movable shaft 510, the shaft sleeve 600 is provided with an internal thread, the movable shaft 510 is provided with an external thread which is connected with the internal thread in a matching manner, and the movable shaft 510 is matched with the shaft sleeve 600 through the threads of the movable shaft 510 and the shaft sleeve 600, so that when the stepping motor drives the movable shaft 510 to rotate, the movable shaft 510 can linearly move relative to the shaft sleeve 600, and the linear movement of the valve element 500 is realized.
In some embodiments of the present invention, in order to adjust the flow rate between the inlet channel 110 and the outlet channel 120, the first plug portion 520 is provided with an adjusting section 521, the adjusting section 521 faces the first passage opening 121, the adjusting section 521 may be a truncated cone structure, and as the first plug portion 520 goes deeper into the first passage opening 121, the flow rate between the inlet channel 110 and the outlet channel 120 is gradually reduced until the first plug portion 520 completely closes the first passage opening 121. The gas water heater 20 can control the outlet water temperature according to the magnitude of the through-flow, for example, when the combustion power of the gas water heater 20 is constant, the outlet water temperature of the gas water heater 20 gradually decreases with the gradual increase of the through-flow, and otherwise, the outlet water temperature of the gas water heater 20 gradually increases.
As shown in fig. 3, this is another embodiment of the hybrid energy hot water system, and the main difference of this embodiment compared with the previous embodiment is: the temperature-sensitive probe 200 for water inflow and the water flow sensor 300 of the present embodiment are both disposed outside the electric three-way valve 10, specifically, the temperature-sensitive probe 200 for water inflow is disposed in the first water outlet pipe 32 of the non-gas water heater 30, and the water flow sensor 300 is disposed in the second water inlet pipe 21 of the gas water heater 20, so as to simplify the structure of the electric three-way valve 10.
Furthermore, the present invention also provides a computer-readable storage medium having a control program of a hybrid energy hot water system stored thereon, which when executed by a processor, implements the steps of the control method of the hybrid energy hot water system according to the above embodiments.
Through the above description of the embodiments, those skilled in the art will clearly understand that the method of the above embodiments can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware, but in many cases, the former is a better implementation manner. Based on such understanding, the technical solution of the present invention essentially or contributing to the prior art can be embodied in the form of a software product, which is stored in a storage medium (e.g. ROM/RAM, magnetic disk, optical disk) as described above and includes instructions for enabling a terminal device (e.g. mobile phone, computer, server, combined energy hot water system or network device) to execute the method according to the embodiments of the present invention.
The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge of those skilled in the art without departing from the gist of the present invention.
Claims (11)
1. The control method of the composite energy hot water system is characterized by comprising a gas water heater, a non-gas water heater and an electric three-way valve, wherein a water outlet pipe of the gas water heater is connected with a bypass pipe, and the electric three-way valve is respectively connected with the bypass pipe, a water inlet pipe of the gas water heater and a water outlet pipe of the non-gas water heater;
further comprising the steps of:
s10, judging whether the water outlet temperature of the non-gas water heater is greater than or equal to a target temperature-lambda, if so, executing S20, and if not, executing S30;
s20, communicating a water outlet pipe of the non-gas water heater with a bypass pipe through an electric three-way valve, and stopping the water outlet pipe of the non-gas water heater and a water inlet pipe of the gas water heater;
s30, conducting a water outlet pipe of the non-gas water heater and a water inlet pipe of the gas water heater through an electric three-way valve, and stopping the water outlet pipe of the non-gas water heater and a bypass pipe at the moment; automatically adjusting the gas intake amount of the gas water heater, judging whether the water outlet temperature of the gas water heater is equal to the target temperature, if so, keeping the water inlet flow of the gas water heater, and if not, executing S40;
s40, judging the gas intake amount of the gas water heater, if the gas intake amount of the gas water heater is at the maximum load, executing S50, and if the gas intake amount of the gas water heater is at the minimum load, executing S60;
s50, gradually reducing the inflow of the gas water heater by the electric three-way valve to enable the outlet water temperature of the gas water heater to gradually rise and approach to a target temperature;
and S60, gradually increasing the water inlet flow of the gas water heater by the electric three-way valve, so that the water outlet temperature of the gas water heater gradually decreases and approaches to the target temperature.
2. The control method of the hybrid energy hot water system according to claim 1, wherein: after S60, when the water inlet flow of the gas water heater is at the maximum value, if the water outlet temperature of the gas water heater is still greater than or equal to the target temperature + β, it is determined whether the duration of the water outlet temperature is greater than or equal to α seconds.
3. The control method of the hybrid energy hot water system according to claim 2, wherein: if the duration is longer than or equal to alpha seconds, the electric three-way valve conducts the water outlet pipe of the non-gas water heater with the bypass pipe, and at the moment, the water outlet pipe of the non-gas water heater is cut off from the water inlet pipe of the gas water heater.
4. The control method of the hybrid energy hot water system according to claim 2, wherein: and if the duration is less than alpha second, the gas water heater keeps the minimum load operation.
5. The control method of the hybrid energy hot water system according to claim 2, wherein: beta is a positive integer with a temperature unit, and beta is more than or equal to 4 ℃ and more than or equal to 1 ℃.
6. The control method of the hybrid energy hot water system according to claim 2, wherein: alpha is more than or equal to 10 and more than or equal to 20.
7. The control method of the hybrid energy hot water system according to claim 1, wherein: lambda is a positive integer with a temperature unit, and lambda is more than or equal to 5 ℃ and more than or equal to 1 ℃.
8. Compound energy hot water system, its characterized in that includes:
the non-gas water heater is provided with a first water inlet pipe and a first water outlet pipe;
the gas water heater is provided with a second water inlet pipe and a second water outlet pipe, and the second water outlet pipe is connected with a bypass pipe;
the electric three-way valve comprises a valve body, wherein a water inlet channel, a water outlet channel, a bypass channel and a valve core controlled by a driving device are arranged in the valve body, the water inlet channel is connected with the first water outlet pipe, the water outlet channel is connected with the second water inlet pipe, and the bypass channel is connected with the bypass pipe; the valve core is provided with a main through station and a bypass station, when the valve core is positioned at the main through station, the water inlet channel is communicated with the water outlet channel, when the valve core is positioned at the bypass station, the water inlet channel is communicated with the bypass channel, and when the valve core is positioned at the main through station, the valve core can adjust the through-flow rate between the water inlet channel and the water outlet channel;
the water inlet temperature sensing probe is arranged on the water inlet channel or the first water outlet pipe;
the water flow sensor is arranged on the water outlet channel or the second water inlet pipe;
and the water outlet temperature sensing probe is arranged on the second water outlet pipe.
9. The hybrid energy hot water system of claim 8, wherein: the water outlet channel is provided with a first channel port, the bypass channel is provided with a second channel port, the water inlet channel is communicated with the water outlet channel through the first channel port, and the water inlet channel is communicated with the bypass channel through the second channel port.
10. The hybrid energy hot water system of claim 9, wherein: the valve core comprises a moving shaft, a first plug part and a second plug part, the first plug part and the second plug part are fixedly connected to the moving shaft, the moving shaft is connected with the driving device, and the driving device controls the moving shaft to move linearly, so that the first plug part and the second plug part can respectively open and close the first passage port and the second passage port; the first plug portion is provided with an adjusting section, the adjusting section faces the first channel port, and the adjusting section is used for adjusting through-flow between the water inlet channel and the water outlet channel.
11. A computer-readable storage medium having a control program stored thereon, wherein the control program, when executed by a processor, implements the steps of the control method of the hybrid energy water heating system according to any one of claims 1 to 7.
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Application publication date: 20210105 |