CN115717729A - Domestic hot water temperature control system - Google Patents
Domestic hot water temperature control system Download PDFInfo
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- CN115717729A CN115717729A CN202211494246.XA CN202211494246A CN115717729A CN 115717729 A CN115717729 A CN 115717729A CN 202211494246 A CN202211494246 A CN 202211494246A CN 115717729 A CN115717729 A CN 115717729A
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Abstract
The invention discloses a domestic hot water temperature control system, and relates to the technical field of new energy and energy conservation. The system is including water temperature controller, flow collector and valve controller, wherein, water temperature controller is including the host system and the first wireless communication module that the communication links to each other, first wireless communication module is wireless communication connection respectively flow collector with valve controller, host system is used for according to the real-time and domestic hot water supply system's that acquires moisturizing flow, generates the control command that is used for positive correlation ground real-time adjustment flow control valve's valve aperture, and passes through first wireless communication module will control command conveys in real time to valve controller, so that valve controller is according to this control command real-time control flow control valve's valve aperture realizes real-time adjustment secondary side domestic hot water temperature's mesh, so can accurately match end user's domestic hot water actual demand, ensure the stability of water supply temperature.
Description
Technical Field
The invention belongs to the technical field of new energy and energy conservation, and particularly relates to a domestic hot water temperature control system.
Background
The domestic hot water is supplied by using the waste heat of the power station, so that the demand of domestic hot water in partial areas can be met, the energy utilization rate in the power station is improved, the waste water discharge with the waste heat is reduced, and the influence on the environment is reduced. In the domestic hot water supply system, due to the dynamic change of the load of the domestic hot water at the tail end, the water supply temperature of the domestic hot water needs to be adjusted in real time so as to ensure the stability of the temperature of the domestic hot water. At present, the adjustment of domestic hot water temperature is mainly based on the timing set outlet water temperature, and the timing set outlet water temperature depends on experience, so that the actual requirements of end users on domestic hot water cannot be well matched, and a certain water temperature fluctuation problem is caused.
Disclosure of Invention
The invention aims to provide a domestic hot water temperature control system, which is used for solving the problem that the actual domestic hot water requirements of end users cannot be accurately matched due to the fact that the conventional domestic hot water temperature adjusting mode is set at fixed time.
In order to achieve the purpose, the invention adopts the following technical scheme:
in a first aspect, a domestic hot water temperature control system is provided, which comprises a water temperature controller, a flow collector and a valve controller, wherein the water temperature controller comprises a main control module and a first wireless communication module, the main control module is in wired communication with the first wireless communication module, and the first wireless communication module is respectively in wireless communication with the flow collector and the valve controller;
the flow collector is used for collecting the water supplementing flow of a domestic hot water supply system in real time and transmitting the water supplementing flow to the main control module in real time through the first wireless communication module;
the main control module is used for generating a control instruction for positively and correlatively adjusting the valve opening of the flow control valve in real time according to the water replenishing flow acquired in real time, and transmitting the control instruction to the valve controller in real time through the first wireless communication module, wherein the flow control valve is positioned on a primary side waste heat pipeline which is used for adjusting the temperature of secondary side domestic hot water of the domestic hot water supply system in a heat exchange mode;
and the valve controller is used for controlling the valve opening of the flow control valve in real time according to the control instruction after receiving the control instruction so as to adjust the temperature of the secondary side domestic hot water in real time.
Based on the content of the invention, a new scheme for controlling the temperature of domestic hot water based on water supplement flow is provided, namely the scheme comprises a water temperature controller, a flow collector and a valve controller, wherein the water temperature controller comprises a main control module and a first wireless communication module which are in communication connection, the first wireless communication module is respectively in wireless communication connection with the flow collector and the valve controller, the main control module is used for generating a control instruction for positively and correlatively adjusting the valve opening of a flow control valve in real time according to the water supplement flow obtained in real time and of a domestic hot water supply system, and transmitting the control instruction to the valve controller in real time through the first wireless communication module, so that the valve controller can control the valve of the flow control valve in real time according to the control instruction, the purpose of adjusting the temperature of the domestic hot water on the secondary side in real time is achieved, the opening of a valve on a waste heat pipeline is adjusted by monitoring the water supplement flow in real time, the temperature of the domestic hot water can be automatically adjusted, the actual domestic hot water temperature of an end user can be accurately matched, the stability of the domestic hot water supply temperature is ensured, and the novel scheme is convenient and rapid, and convenient for practical application and popularization.
In one possible design, the water temperature controller further comprises a cloud server, and the water temperature controller further comprises a second wireless communication module which is in wireless communication connection with the cloud server and in wired communication connection with the main control module;
according to the water replenishing flow acquired in real time, a control instruction for adjusting the valve opening of the flow control valve in real time in positive correlation is generated, and the method comprises the following steps: uploading the water replenishing flow acquired in real time to the cloud server in real time through the second wireless communication module, and generating a control instruction for adjusting the valve opening of the flow control valve in real time in a positive correlation manner according to a valve opening target value after receiving the valve opening target value of the flow control valve which is fed back by the cloud server and is in positive correlation with the water replenishing flow, wherein the flow control valve is positioned on a primary side waste heat pipeline which is used for adjusting the temperature of secondary side domestic hot water of the domestic hot water supply system in a heat exchange manner;
the cloud server is used for synchronously acquiring weather data of an area where the domestic hot water supply system is located after receiving the water supplementing flow uploaded in real time, acquiring locally stored hot water load historical data of the domestic hot water supply system, then determining the valve opening target value in real time according to the water supplementing flow, the weather data and the hot water load historical data, and finally feeding back the valve opening target value to the main control module in real time through the second wireless communication module.
In one possible design, the determining the target valve opening value in real time according to the water replenishing flow, the weather data and the historical hot water load data includes:
determining a first valve opening target value of the flow control valve, which is positively correlated with the water supplementing flow, in real time according to the water supplementing flow and the known positive correlation relation between the water supplementing flow and the valve opening;
determining a second valve opening target value of the flow control valve in real time according to the weather data and the known logical relationship between the weather data and the valve opening;
according to the historical data of the hot water load, firstly counting to obtain the valve opening degree of each historical synchronization period, and then taking the valve opening degree of the historical synchronization period synchronized with the current period as a third valve opening degree target value of the flow control valve;
according to the first valve opening target value, the second valve opening target value and the third valve opening target value, calculating in real time according to the following formula to obtain a valve opening target value x:
x＝κ 1 *x 1 +κ 2 *x 2 +κ 3 *x 3
in the formula, x 1 Representing the first valve opening target value, x 2 Representing the second valve opening target value, x 3 Representing the third valve opening target value, k 1 、κ 2 And kappa 3 Respectively representing preset weight coefficients corresponding to the first, second and third valve opening target values one by one, and having kappa 1 +κ 2 +κ 3 ＝1。
In one possible design, the second wireless communication module is a wireless ad hoc network module of the model STM8L 151G.
In one possible design, the first wireless communication module is a wireless ad hoc network module of the model STM8L 151G.
In one possible design, the water temperature controller further comprises an upper computer, and the water temperature controller further comprises a universal interface module which is respectively in wired communication connection with the upper computer and the main control module.
In one possible design, the universal interface module employs an RS485 communication interface and/or an M-Bus communication interface.
In one possible design, the water temperature controller further comprises a power supply module, wherein the power supply module comprises a battery and a multi-way switching type voltage stabilizer for providing different output voltages;
and the voltage output end of the multi-way switch type voltage stabilizer is respectively and electrically connected with the power supply input end of the main control module and the power supply input end of the first wireless communication module.
In one possible design, the water temperature controller further comprises a temperature collector and a display module, wherein the temperature collector is in wireless communication connection with the main control module through the first wireless communication module, and the display module is in wired communication connection with the main control module;
the temperature collector is used for collecting the temperature of the secondary side domestic hot water in real time and transmitting the temperature of the secondary side domestic hot water to the main control module in real time through the first wireless communication module;
the main control module is also used for transmitting the secondary side domestic hot water temperature received in real time to the display module for real-time display.
In one possible design, the main control module adopts a single chip microcomputer chip with the model of STM32 and a peripheral circuit thereof.
The beneficial effect of above-mentioned scheme:
(1) The invention creatively provides a new scheme for controlling the temperature of domestic hot water based on water supplement flow, which comprises a water temperature controller, a flow collector and a valve controller, wherein the water temperature controller comprises a main control module and a first wireless communication module which are in communication connection, the first wireless communication module is respectively in wireless communication connection with the flow collector and the valve controller, the main control module is used for generating a control instruction for positively and correlatively adjusting the valve opening of a flow control valve in real time according to the water supplement flow obtained in real time and of a domestic hot water supply system, and transmitting the control instruction to the valve controller in real time through the first wireless communication module, so that the valve controller can control the valve opening of the flow control valve in real time according to the control instruction, the purpose of adjusting the temperature of the domestic hot water on the secondary side in real time is realized, the opening of a valve on a waste heat pipeline is adjusted by monitoring the water supplement flow in real time, the temperature of the domestic hot water can be automatically adjusted, the actual domestic hot water requirement of an end user is accurately matched, the stability of the domestic hot water temperature is ensured, and the domestic hot water supply is very convenient and fast;
(2) The intelligent control and energy-saving control method can be combined with factors such as weather conditions, historical data and actually-measured water replenishing flow to achieve the purposes of intelligently controlling the opening of the valve of the flow control valve and saving energy.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a domestic hot water temperature control system according to an embodiment of the present application.
Detailed Description
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the present invention will be briefly described below with reference to the accompanying drawings and the embodiments or the description in the prior art, it is obvious that the following description of the structure of the drawings is only some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts. It should be noted that the description of the embodiments is provided to help understanding of the present invention, but the present invention is not limited thereto.
It will be understood that, although the terms first, second, etc. may be used herein to describe various objects, these objects should not be limited by these terms. These terms are only used to distinguish one object from another. For example, a first object may be referred to as a second object, and similarly, a second object may be referred to as a first object, without departing from the scope of example embodiments of the present invention.
It should be understood that, for the term "and/or" as may appear herein, it is merely an associative relationship that describes an associated object, meaning that three relationships may exist, e.g., a and/or B may mean: a exists alone, B exists alone or A and B exist at the same time; as another example, A, B and/or C, may indicate the presence of any one or any combination of A, B and C; for the term "/and" as may appear herein, which describes another associative object relationship, it means that two relationships may exist, e.g., a/and B, may mean: a exists singly or A and B exist simultaneously; in addition, for the character "/" that may appear herein, it generally means that the former and latter associated objects are in an "or" relationship.
Example (b):
as shown in fig. 1, the domestic hot water temperature control system provided in the first aspect of this embodiment includes, but is not limited to, a water temperature controller, a flow collector, and a valve controller, where the water temperature controller includes, but is not limited to, a main control module and a first wireless communication module, the main control module is connected to the first wireless communication module in a wired communication manner, and the first wireless communication module is respectively connected to the flow collector and the valve controller in a wireless communication manner; the flow collector is used for collecting the water supplementing flow of a domestic hot water supply system in real time and transmitting the water supplementing flow to the main control module in real time through the first wireless communication module; the main control module is used for generating a control instruction for positively and correlatively adjusting the valve opening of the flow control valve in real time according to the water replenishing flow acquired in real time, and transmitting the control instruction to the valve controller in real time through the first wireless communication module, wherein the flow control valve is positioned on a primary side waste heat pipeline which is used for adjusting the temperature of secondary side domestic hot water of the domestic hot water supply system in a heat exchange mode; and the valve controller is used for controlling the valve opening of the flow control valve in real time according to the control instruction after receiving the control instruction so as to adjust the temperature of the secondary side domestic hot water in real time.
As shown in fig. 1, in the specific structure of the domestic hot water temperature control system, the main control module is a core of the water temperature controller, and the hardware structure of the system can be realized by, but is not limited to, a single chip microcomputer chip of the type STM32 and peripheral circuits thereof. The first wireless communication module can specifically adopt a wireless ad hoc network module with the model of STM8L151G, so that the wireless ad hoc network module can be installed and used, and the purpose of wireless data transmission is realized. The flow collector can specifically obtain the water replenishing flow by reading flow data of a flow element (such as a flow meter) on a water replenishing pipeline of the domestic hot water supply system, so that the obtained water replenishing flow can reflect the water demand of the terminal domestic hot water, and further can be used as a control parameter to adjust the valve opening of the flow control valve, so that the purpose of adjusting the heat supply flow of the primary side waste heat pipeline to adjust the heat exchange power of the secondary side domestic hot water and finally adjust the temperature of the domestic hot water is achieved. Since the water supplement flow reflects the water demand of the terminal domestic hot water, the larger the value of the water supplement flow is, the larger the water demand is, the larger the required valve opening is, and vice versa, the control instruction for adjusting the valve opening of the flow control valve in real time in a positive correlation manner needs to be generated according to the water supplement flow obtained in real time, for example, a valve opening target value of the flow control valve which is positively correlated with the water supplement flow is determined in real time according to the known positive correlation relationship between the water supplement flow and the valve opening, and then a control instruction for adjusting the valve opening of the flow control valve to the valve opening target value is generated. In addition, the valve Controller may be implemented by a Programmable Logic Controller (PLC), the flow control valve may be implemented by an existing flow valve, and the primary side waste heat pipeline may be applied to the domestic hot water supply system by a conventional heat exchange method.
Therefore, based on the domestic hot water temperature control system, a new scheme for controlling the temperature of domestic hot water based on water supplement flow is provided, namely the novel scheme comprises a water temperature controller, a flow collector and a valve controller, wherein the water temperature controller comprises a main control module and a first wireless communication module which are in communication connection, the first wireless communication module is respectively in wireless communication connection with the flow collector and the valve controller, the main control module is used for generating a control instruction for positively and correlatively adjusting the valve opening of a flow control valve in real time according to the water supplement flow obtained in real time and of a domestic hot water supply system, and transmitting the control instruction to the valve controller in real time through the first wireless communication module, so that the valve controller controls the valve opening of the flow control valve in real time according to the control instruction, the purpose of adjusting the domestic hot water temperature in real time is achieved, the opening of a valve on a primary side waste heat pipeline is adjusted by monitoring the water supplement flow in real time, the domestic hot water temperature can be automatically adjusted, the actual domestic hot water requirements of end users are accurately matched, the stability of the domestic hot water temperature is ensured, and the domestic hot water temperature is very convenient and rapid to be practically applied and popularized.
Preferably, the water temperature controller further comprises a cloud server, and the water temperature controller further comprises a second wireless communication module which is in wireless communication connection with the cloud server and is in wired communication connection with the main control module; according to the water replenishing flow acquired in real time, a control instruction for adjusting the valve opening of the flow control valve in real time in positive correlation is generated, and the method comprises the following steps: uploading the water replenishing flow acquired in real time to the cloud server in real time through the second wireless communication module, and generating a control instruction for adjusting the valve opening of the flow control valve in real time in a positive correlation manner according to a valve opening target value after receiving the valve opening target value of the flow control valve which is fed back by the cloud server and is in positive correlation with the water replenishing flow, wherein the flow control valve is positioned on a primary side waste heat pipeline which is used for adjusting the temperature of secondary side domestic hot water of the domestic hot water supply system in a heat exchange manner; the cloud server is used for synchronously acquiring weather data of an area where the domestic hot water supply system is located after receiving the water supplementing flow uploaded in real time, acquiring locally stored hot water load historical data of the domestic hot water supply system, then determining the valve opening target value in real time according to the water supplementing flow, the weather data and the hot water load historical data, and finally feeding back the valve opening target value to the main control module in real time through the second wireless communication module. The second wireless communication module can also specifically adopt a wireless ad hoc network module with the model of STM8L151G so as to be convenient for installation and use and realize the purpose of wireless data transmission. The cloud server is used for combining factors such as weather conditions, historical data and actually-measured water replenishing flow to achieve the purposes of intelligently controlling the valve opening of the flow control valve and saving energy. Specifically, the valve opening target value is determined in real time according to the water replenishing flow, the weather data and the hot water load historical data, and the method includes, but is not limited to, the following steps S1 to S4.
S1, determining a first valve opening target value of the flow control valve which is positively correlated with the water supplementing flow in real time according to the known positive correlation relationship between the water supplementing flow and the valve opening.
In step S1, the known positive correlation relationship may be obtained in advance based on a conventional linear fitting manner (e.g., least square method, etc.).
And S2, determining a second valve opening target value of the flow control valve in real time according to the weather data and the known logical relationship between the weather data and the valve opening.
In step S2, the known logical relationship may specifically include: the valve opening is moderately reduced in sunny weather and sufficient sunlight, and moderately increased in rainy weather.
S3, according to the historical data of the hot water load, firstly counting to obtain the valve opening degree of each historical period of synchronization, and then taking the valve opening degree of the historical period of synchronization which is synchronized with the current period of synchronization as a third valve opening degree target value of the flow control valve.
In the step S3, the hot water load history data may specifically include a seasonal usage of domestic hot water and a corresponding seasonal average value of valve openings, a monthly usage of domestic hot water and a corresponding monthly average value of valve openings, a weekly average value of domestic hot water Zhou Yongliang and a corresponding weekly average value of valve openings, a daily usage of domestic hot water and a corresponding daily average value of valve openings, and an hourly usage of domestic hot water and a corresponding hourly average value of valve openings, and the like. Therefore, according to the season, month, week, day or hour of the current time period, the seasonal average value of the valve opening, the monthly average value of the valve opening, the weekly average value of the valve opening, the daily average value of the valve opening or the hourly average value of the valve opening of the historical contemporaneous time period can be used as the third valve opening target value of the flow control valve.
S4, according to the first valve opening target value, the second valve opening target value and the third valve opening target value, calculating in real time according to the following formula to obtain a valve opening target value x:
x＝κ 1 *x 1 +κ 2 *x 2 +κ 3 *x 3
in the formula, x 1 Representing the first valve opening target value, x 2 Representing the target value of the second valve opening, x 3 Representing the third valve opening target value, k 1 、κ 2 And kappa 3 Respectively represent preset weight coefficients corresponding to the first valve opening target value, the second valve opening target value and the third valve opening target value one by one and have kappa 1 +κ 2 +κ 3 ＝1。
In said step S4,. Kappa. 1 、κ 2 And kappa 3 Which may be exemplified by 0.618, 0.236, and 0.146, respectively.
Preferably, the water temperature controller further comprises an upper computer, and the water temperature controller further comprises a universal interface module which is respectively in wired communication connection with the upper computer and the main control module. As shown in fig. 1, by configuring the universal interface module, information such as the water supplement flow and the target valve opening value can be reported to the upper computer, so as to meet the multi-scenario application requirements. Specifically, the universal interface module may be, but is not limited to, an RS485 communication interface and/or an M-Bus communication interface.
Preferably, the water temperature controller further comprises a temperature collector and a display module, wherein the temperature collector is in wireless communication connection with the main control module through the first wireless communication module, and the display module is in wired communication connection with the main control module; the temperature collector is used for collecting the temperature of the secondary side domestic hot water in real time and transmitting the temperature of the secondary side domestic hot water to the main control module in real time through the first wireless communication module; the main control module is also used for transmitting the secondary side domestic hot water temperature received in real time to the display module for real-time display. The temperature collector is preferably arranged in a pipe medium of a secondary side domestic hot water pipeline of the domestic hot water supply system, so that the medium temperature of the pipe medium is taken as the secondary side domestic hot water temperature. The display module is preferably a liquid crystal display.
Further preferably, the temperature collector includes, but is not limited to, an insertion tube type platinum resistance thermometer and a patch type thermometer, wherein the insertion tube type platinum resistance thermometer is used for being installed in a pipeline medium of the secondary side domestic hot water pipeline and measuring to obtain a medium temperature of the pipeline medium, the patch type thermometer is used for being installed on a pipeline wall surface of the secondary side domestic hot water pipeline and measuring to obtain a wall surface temperature of the pipeline wall surface, and the pipeline wall surface and the pipeline medium belong to the same section of pipeline in the secondary side domestic hot water pipeline; the main control module is further configured to obtain the secondary side domestic hot water temperature according to the following mode (a) or (B) after the medium temperature and the wall surface temperature are synchronously obtained through the first wireless communication module.
(A) Firstly, when the same section of pipeline is in a non-heat supply period, determining a pipeline medium temperature correction parameter according to the synchronously obtained medium temperature and the wall surface temperature, and then when the same section of pipeline is in a heat supply period, automatically correcting the medium temperature obtained in real time by using the pipeline medium temperature correction parameter to obtain a real-time medium temperature correction value used as the secondary side domestic hot water temperature. Therefore, the thermometer for collecting the water temperature in the heat supply pipeline, namely the intubation type platinum resistance thermometer, is considered to have measurement deviation after being used for a long time, and further brings adverse effects to the control of a heat supply system. Meanwhile, the wall temperature of the pipeline is basically equal to the temperature of the pipeline quality during the non-heat supply period, so that a correction parameter which can be used for correcting the medium temperature in real time during the heat supply period can be obtained according to the medium temperature and the wall temperature obtained during the non-heat supply period, and in detail, the pipeline medium temperature correction parameter is determined according to the medium temperature and the wall temperature obtained synchronously, wherein the pipeline medium temperature correction parameter η is obtained by calculating according to the following formula:
in the formula, T Noh,wl Representing said wall temperature, T, during the non-heating period Noh,md Representing the medium temperature in the non-heat-supply period, so that when the pipeline medium temperature correction parameter is used for automatically correcting the medium temperature acquired in real time, the real-time medium temperature correction value T is obtained by calculating according to the following formula cr,md ：
T cr,md ＝(1+η)*T h,md
In the formula, T h,md Representing the temperature of said medium during the heating period. Furthermore, the previously derived duct medium temperature correction parameters may serve the next heating season and be re-determined during the next non-heating period.
(B) Firstly, a medium temperature calculation value of the pipeline medium is obtained through deduction according to the wall surface temperature and a known heat transfer model from the pipeline wall surface to the medium in the pipeline, the medium temperature is automatically corrected by using a current value of a pipeline medium temperature correction parameter to obtain a real-time medium temperature correction value used as the secondary side domestic hot water temperature, and then the pipeline medium temperature correction parameter is adjusted by adopting a PID algorithm according to a comparison result of the medium temperature correction value and the medium temperature calculation value to obtain an updated value of the pipeline medium temperature correction parameter. In this way, the cannula type platinum resistance thermometer can be corrected in real time through the technical means, and the accuracy of temperature monitoring is ensured. The known heat transfer model can be determined conventionally in advance through the existing thermal engineering based on information such as the installation positions of the intubation type platinum resistance thermometer and the patch type thermometer, the material of the same section of pipeline, the heat transfer direction from inside to outside and the like. The PID (short for Proportional, integral and Differential) algorithm is an existing control algorithm which combines three links of proportion, integral and Differential into a whole, is the control algorithm which is the most mature in technology and the most widely applied in a continuous system, is suitable for occasions with unclear knowledge about a controlled object model, and therefore the pipeline medium temperature correction parameter can be adjusted by the PID algorithm according to the comparison result of the medium temperature correction value and the medium temperature estimation value to obtain an updated value of the pipeline medium temperature correction parameter.
Preferably, the water temperature controller further comprises a power supply module, wherein the power supply module comprises a battery and a multi-way switch type voltage stabilizer for providing different output voltages; and the voltage output end of the multi-way switch type voltage stabilizer is respectively and electrically connected with the power supply input end of the main control module and the power supply input end of the first wireless communication module. Through the specific design of the power supply module, a constant-voltage direct-current power supply can be provided, and the normal work of the whole water temperature controller is guaranteed. In addition, the voltage output end of the multi-way switch type voltage stabilizer can be respectively and electrically connected with the power supply input ends of the universal interface module, the display module and the like.
To sum up, adopt the domestic hot water temperature control system that this embodiment provided, have following technological effect:
(1) The embodiment provides a new scheme for controlling the temperature of domestic hot water based on water supplement flow, which includes a water temperature controller, a flow collector and a valve controller, wherein the water temperature controller includes a main control module and a first wireless communication module which are in communication connection, the first wireless communication module is respectively in wireless communication connection with the flow collector and the valve controller, the main control module is used for generating a control instruction for positively and correlatively adjusting the valve opening of a flow control valve in real time according to the water supplement flow obtained in real time and of a domestic hot water supply system, and transmitting the control instruction to the valve controller in real time through the first wireless communication module, so that the valve controller can control the valve opening of the flow control valve in real time according to the control instruction, the purpose of adjusting the temperature of the domestic hot water at the secondary side in real time is achieved, the opening of a valve on a primary side pipeline is adjusted by monitoring the water supplement flow in real time, the temperature of the domestic hot water can be automatically adjusted, the actual domestic hot water requirement of an end user is accurately matched, the temperature of the domestic hot water supply is ensured to be stable, and is very convenient and fast;
(2) The intelligent control and energy-saving control method can be combined with factors such as weather conditions, historical data and actually-measured water replenishing flow to achieve the purposes of intelligently controlling the opening of the valve of the flow control valve and saving energy.
Finally, it should be noted that: the above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A domestic hot water temperature control system is characterized by comprising a water temperature controller, a flow collector and a valve controller, wherein the water temperature controller comprises a main control module and a first wireless communication module, the main control module is in wired communication connection with the first wireless communication module, and the first wireless communication module is respectively in wireless communication connection with the flow collector and the valve controller;
the flow collector is used for collecting the water supplementing flow of a domestic hot water supply system in real time and transmitting the water supplementing flow to the main control module in real time through the first wireless communication module;
the main control module is used for generating a control instruction for positively and correlatively adjusting the valve opening of the flow control valve in real time according to the water replenishing flow acquired in real time, and transmitting the control instruction to the valve controller in real time through the first wireless communication module, wherein the flow control valve is positioned on a primary side waste heat pipeline which is used for adjusting the temperature of secondary side domestic hot water of the domestic hot water supply system in a heat exchange mode;
and the valve controller is used for controlling the valve opening of the flow control valve in real time according to the control instruction after receiving the control instruction so as to adjust the temperature of the secondary side domestic hot water in real time.
2. The domestic hot water temperature control system of claim 1, further comprising a cloud server, wherein said water temperature controller further comprises a second wireless communication module in wireless communication connection with said cloud server and in wired communication connection with said main control module;
generating a control instruction for positively and correlatively adjusting the valve opening of the flow control valve in real time according to the water supplementing flow acquired in real time, wherein the control instruction comprises the following steps: uploading the water replenishing flow acquired in real time to the cloud server in real time through the second wireless communication module, and generating a control instruction for adjusting the valve opening of the flow control valve in real time in a positive correlation manner according to a valve opening target value after receiving the valve opening target value of the flow control valve which is fed back by the cloud server and is in positive correlation with the water replenishing flow, wherein the flow control valve is positioned on a primary side waste heat pipeline which is used for adjusting the temperature of secondary side domestic hot water of the domestic hot water supply system in a heat exchange manner;
the cloud server is used for synchronously acquiring weather data of an area where the domestic hot water supply system is located after receiving the water supplementing flow uploaded in real time, acquiring locally stored hot water load historical data of the domestic hot water supply system, then determining the valve opening target value in real time according to the water supplementing flow, the weather data and the hot water load historical data, and finally feeding back the valve opening target value to the main control module in real time through the second wireless communication module.
3. The domestic hot water temperature control system of claim 2, wherein determining said valve opening target value in real time based on said water supplement flow, said weather data and said hot water load historical data comprises:
according to the known positive correlation relationship between the water replenishing flow and the valve opening, determining a first valve opening target value of the flow control valve, which is positively correlated with the water replenishing flow, in real time;
determining a second valve opening target value of the flow control valve in real time according to the weather data and the known logical relationship between the weather data and the valve opening;
according to the historical data of the hot water load, firstly counting to obtain the valve opening degree of each historical synchronization period, and then taking the valve opening degree of the historical synchronization period synchronized with the current period as a third valve opening degree target value of the flow control valve;
according to the first valve opening target value, the second valve opening target value and the third valve opening target value, calculating in real time according to the following formula to obtain a valve opening target value x:
x＝κ 1 *x 1 +κ 2 *x 2 +κ 3 *x 3
in the formula, x 1 Representing said first valve opening target value, x 2 Representing the second valve opening target value, x 3 Representing the third valve opening target value, k 1 、κ 2 And kappa 3 Respectively represent preset weight coefficients corresponding to the first valve opening target value, the second valve opening target value and the third valve opening target value one by one and have kappa 1 +κ 2 +κ 3 ＝1。
4. The domestic hot water temperature control system of claim 2, wherein said second wireless communication module is a model STM8L151G wireless ad hoc network module.
5. The domestic hot water temperature control system of claim 1, wherein said first wireless communication module is a model STM8L151G wireless ad hoc network module.
6. The domestic hot water temperature control system of claim 1, further comprising an upper computer, wherein the water temperature controller further comprises a universal interface module respectively connected with the upper computer and the main control module in wired communication.
7. The domestic hot water temperature control system of claim 6, wherein said universal interface module employs an RS485 communication interface and/or an M-Bus communication interface.
8. The domestic hot water temperature control system of claim 1, wherein said water temperature controller further comprises a power module, wherein said power module comprises a battery and a multi-way switching regulator for providing different output voltages;
and the voltage output end of the multi-way switch type voltage stabilizer is respectively and electrically connected with the power supply input end of the main control module and the power supply input end of the first wireless communication module.
9. The domestic hot water temperature control system of claim 1, further comprising a temperature collector, wherein the water temperature controller further comprises a display module, wherein the temperature collector is in wireless communication connection with the main control module through the first wireless communication module, and the display module is in wired communication connection with the main control module;
the temperature collector is used for collecting the temperature of the secondary side domestic hot water in real time and transmitting the temperature of the secondary side domestic hot water to the main control module in real time through the first wireless communication module;
the main control module is also used for transmitting the secondary side domestic hot water temperature received in real time to the display module for real-time display.
10. The domestic hot water temperature control system of claim 1, wherein the main control module adopts a single chip microcomputer chip of type STM32 and peripheral circuits thereof.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211494246.XA CN115717729A (en) | 2022-11-25 | 2022-11-25 | Domestic hot water temperature control system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211494246.XA CN115717729A (en) | 2022-11-25 | 2022-11-25 | Domestic hot water temperature control system |
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| CN115717729A true CN115717729A (en) | 2023-02-28 |
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| CN202211494246.XA Pending CN115717729A (en) | 2022-11-25 | 2022-11-25 | Domestic hot water temperature control system |
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