CN114963508A - Water heater system for supplying water at constant temperature and control method - Google Patents

Water heater system for supplying water at constant temperature and control method Download PDF

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Publication number
CN114963508A
CN114963508A CN202110459743.5A CN202110459743A CN114963508A CN 114963508 A CN114963508 A CN 114963508A CN 202110459743 A CN202110459743 A CN 202110459743A CN 114963508 A CN114963508 A CN 114963508A
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China
Prior art keywords
water
temperature
storage device
water storage
mixing valve
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CN202110459743.5A
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Chinese (zh)
Inventor
吴恩豪
管江勇
曹冠忠
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Qingdao Economic And Technology Development District Haier Water Heater Co ltd
Haier Smart Home Co Ltd
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Qingdao Economic And Technology Development District Haier Water Heater Co ltd
Haier Smart Home Co Ltd
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Priority to CN202110459743.5A priority Critical patent/CN114963508A/en
Publication of CN114963508A publication Critical patent/CN114963508A/en
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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
    • F24H1/18—Water-storage heaters
    • F24H1/20—Water-storage heaters with immersed heating elements, e.g. electric elements or furnace tubes
    • F24H1/201—Water-storage heaters with immersed heating elements, e.g. electric elements or furnace tubes using electric energy supply
    • 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
    • F24H9/0005—Details for water heaters
    • 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
    • F24H9/18—Arrangement or mounting of grates or heating means
    • F24H9/1809—Arrangement or mounting of grates or heating means for water heaters
    • F24H9/1818—Arrangement or mounting of electric heating means
    • 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
    • F24H9/2021—Storage heaters
    • 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
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
    • Y02B30/18—Domestic hot-water supply systems using recuperated or waste heat

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Domestic Hot-Water Supply Systems And Details Of Heating Systems (AREA)

Abstract

The invention discloses a water heater system for supplying water at constant temperature and a control method, wherein the water heater system comprises a water heater, a water inlet of the water heater is communicated with a water supply pipe, and the water heater system also comprises: the water storage device is communicated with the water outlet of the water heater and is provided with a heating module for heating water; the water mixing valve comprises two water inlets and a water outlet, the two water inlets are respectively connected with the water outlet of the water storage device and the water supply pipe, and the water outlet of the water mixing valve is connected with the water using end; and the control unit is used for controlling the heating temperature of the water storage device according to the difference value between the obtained water outlet temperature of the water storage device and the water temperature set by a user and/or adjusting the flow ratio of the water storage device and the water supply pipe in the water mixing valve. The control method provided by the invention judges whether temperature compensation needs to be carried out on the water temperature of the water using end according to the difference value of the water outlet temperature of the water storage device and the water temperature set by a user. The water storage device with the heating function is additionally arranged at the water using end, constant-temperature water outlet of the water heater can be realized without installing a water return pipeline, and the water storage device is suitable for popularization and application.

Description

Water heater system for supplying water at constant temperature and control method
Technical Field
The invention belongs to the technical field of water heaters, and particularly relates to a water heater system for supplying water at constant temperature and a control method.
Background
Along with the rapid development of social economy, consumers have higher requirements on living quality, the existing gas water heaters generally have the problems of cold water, water cut-off, temperature rise and sudden cold and hot water outlet when water is switched on and off and is combusted, especially when a user takes a shower, the user experience is greatly damaged by the problems, and meanwhile, the waste of water resources is caused by the time of waiting for the water temperature to recover to normal.
In order to solve the above problems, the prior art proposes various zero-cooling water schemes, wherein the most common scheme is to add a water return pipeline outside a hot water pipe and a cold water pipe, but such schemes are only suitable for newly installed and repaired users and reserve the situation of water return. If the water-saving valve is applied to places with only hot water and cold water pipelines, an H valve is required to be installed at a water using end to realize water returning, so that the situation that all water using points use hot water is caused, the pressure of the pipelines is increased after long-term use, old pipelines are broken, and the application range of the water-saving valve is greatly limited. The other solution is that a water storage tank is additionally arranged in front of a water outlet of a water heater, water discharged before combustion of a machine is mixed with high-temperature water after heating of the water heater is stopped so as to prevent cold water from appearing, but the problem of cold water of first water use cannot be solved, and the temperature of the mixed high-temperature water after heating is stopped and the cold water cannot be effectively solved due to the fact that the temperature difference of a cold water source cannot be controlled when the water heater is used in winter.
In view of the above, the present invention is particularly proposed.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides a water heater system for supplying water at constant temperature and a control method thereof.
In order to solve the technical problems, the invention adopts the technical scheme that:
the first objective of the present invention is to provide a water heater system for supplying water at a constant temperature, which comprises a water heater, a water inlet communicated with a water supply pipe, and further comprises: the water storage device is communicated with the water outlet of the water heater and is provided with a heating module for heating water; the water mixing valve comprises two water inlets and a water outlet, the two water inlets are respectively connected with the water outlet of the water storage device and the water supply pipe, and the water outlet of the water mixing valve is connected with the water using end; and the control unit is used for controlling the heating temperature of the water storage device according to the difference value between the obtained water outlet temperature of the water storage device and the water temperature set by a user and/or adjusting the water mixing proportion of the water storage device and the water supply pipe in the water mixing valve.
In the scheme, the system adopts the water storage device positioned at the upstream to compensate the temperature of the outlet water of the water heater, so that the whole system can realize constant-temperature water supply without a return water pipeline, and the defect that the zero-cold water scheme is not easy to accept by users due to the problems of pipeline transformation and the like is overcome. And abandon the design of return water pipeline and also reduced the pipeline burden simultaneously, locate the water storage device water supply process of water end upper reaches and also simplified, need not realize stable constant temperature water supply through the combination of multiple switch valve body and pipeline. The first end of the water mixing valve is connected with the water outlet of the water storage device, the second end of the water mixing valve is connected with the water supply pipe, the water outlet of the water storage device and the cold water provided by the water supply pipe are converged in the water storage device and flow out from the third end to the water using end, and meanwhile, the water mixing valve can adjust the flow proportion of the first end and the second end according to electric signals; the water storage device can provide temperature compensation for outlet water of the water heater, and on the other hand, compared with a zero-cold water system only modified by an H valve, the water storage device also plays a certain water pressure buffering role, and greatly prolongs the service life of an old cold and hot water pipeline connected with the water storage device.
The invention provides a further scheme of the water heater system, which comprises the following steps: a first temperature sensor is arranged at a water outlet of the water storage device and used for detecting the water outlet temperature of the water storage device, and the water heater system adjusts the heating temperature of the water storage device and/or the flow proportion of the water mixing valve according to the difference value between the water outlet temperature of the water storage device and the water temperature set by a user; preferably, the first temperature sensor is arranged close to the water mixing valve to acquire the temperature of the water discharged from the water storage device and conveyed to the water mixing valve.
In the above scheme, the first temperature sensor feeds the detected temperature back to the control unit of the water heater system, and the water heater system compares and calculates the real-time outlet water temperature of the water storage device with the water temperature set by the user, so as to judge whether the temperature compensation of the water using end needs to be realized by adjusting the flow distribution of the heating module and/or the water mixing valve of the water storage device. According to the invention, the outlet water of the water heater and the hot water in the water storage device are mixed to raise the temperature, and the outlet water temperature of the water storage device is directly acquired, so that the problem that cold water stored in a pipeline needs to be considered when the outlet water temperature of the water heater is determined is solved, the acquired temperature parameters are more accurate, and the system is beneficial to adjusting the temperature compensation.
The invention provides a further scheme of the water heater system, which comprises the following steps: and a second temperature sensor is arranged at the water outlet of the water mixing valve, the second temperature sensor detects the confluent water temperature of the water storage device and the water supply pipe, and the water heater system adjusts the flow proportion of the water mixing valve or finishes the adjustment according to the difference value of the confluent water temperature and the water temperature set by a user.
In the above scheme, the water outlet of the water mixing valve is close to the water using end, the second temperature sensor arranged at the water outlet of the water mixing valve can timely acquire the temperature of the converged water, the second temperature sensor sends the information to the control unit, and the control unit judges whether the water temperature meets the water using requirement and determines whether to continuously adjust various parameters according to the water temperature.
The invention provides a further scheme of the water heater system, which comprises the following steps: the water storage temperature in the water storage device is set to be not lower than the water temperature set by the user.
In the above scheme, the water storage temperature is always kept at a higher level (close to or slightly higher than the set water temperature of a user), so that the cold water of the water supply pipe converged by the water mixing valve and the water outlet temperature of the water storage device meet the requirements of the user, and the water temperature compensation of the water using end is realized at any time. Under the condition that the water supply of the water heater is in a problem or other faults, a connecting pipeline between the water heater and the water storage device is cut off, an external water source supplies water for the water storage device, and the water storage device can utilize the heating module to heat the water body in the water storage device and supply the water to a water using end through the water mixing valve.
The second objective of the present invention is to provide a control method of the water heater system, wherein the water heater system determines whether temperature compensation needs to be performed on the water temperature of the water using end according to a difference between the water temperature of the water discharged from the water storage device and the water temperature set by a user, and the temperature compensation is implemented by adjusting the heating temperature of the water storage device and/or the flow ratio of the water mixing valve.
In the above scheme, the comparison between the water temperature of the water discharged from the water storage device and the water temperature set by the user can be performed with multi-step logic judgment according to the positive and negative values of the difference or the magnitude of the value, and the positive and negative judgment of the difference can determine the magnitude relation between the water temperature of the water discharged from the water storage device and the water temperature set by the user, so as to determine whether temperature compensation is needed.
According to the control method described above, the control method further includes: and selecting a mode of adjusting the heating temperature of the water storage device and/or the flow proportion of the water mixing valve to perform temperature compensation according to the difference value between the water outlet temperature of the water storage device and the water temperature set by a user.
In the above scheme, it can be further determined that a single scheme or a combination of multiple schemes is adopted during temperature compensation according to the magnitude of the difference value, so as to realize accurate adjustment.
According to the control method, when the water outlet temperature of the water storage device is lower than the water temperature set by a user and the difference value between the water outlet temperature of the water storage device and the water temperature set by the user is lower than a set value, the flow proportion of the water outlet of the water storage device in the water mixing valve is increased, or the water temperature of the water storage device is increased.
According to the control method, when the water outlet temperature of the water storage device is detected to be lower than the water temperature set by a user and the difference value between the water outlet temperature of the water storage device and the water temperature set by the user is not lower than a set value, the flow proportion of the water outlet of the water storage device in the water mixing valve is increased, and meanwhile, the water temperature of the water storage device is increased.
In the above scheme, due to the difference of the use frequency, the difference between the water temperature of the water discharged from the water storage device and the water temperature set by the user is not fixed, and when the difference is smaller, for example, lower than the set value, the temperature compensation of the water discharged from the water heater can be realized by adopting a single adjusting means. When the difference is large, a plurality of technical means are needed to be combined to realize temperature compensation. The set value is a value preset in the control unit, and can be adjusted by a user or a maintenance worker according to the experience, an instruction manual and the like. In addition, the adjustment means for increasing the water temperature of the water storage device is implemented, so that the water temperature in the water storage device can be always kept close to or higher than the water temperature set by a user, and the problem that the water temperature of the stored water is reduced too fast due to too low ambient temperature can be solved.
The invention provides a further scheme of the water heater system, which comprises the following steps: and when the water storage temperature and the water outlet temperature are detected to be not less than the set water temperature of a user, the flow proportion of the water outlet of the water supply pipe in the water mixing valve is improved.
In the above scheme, because the water temperature of the outlet water of the water storage device reaches or exceeds the water temperature set by the user, the temperature of the water end is balanced, the flow proportion of the cold water of the water supply pipe in the water mixing valve can be improved, and the water temperature of the water end meets the user setting.
According to the control method, the method specifically comprises the following steps:
s1, judging the water outlet temperature T of a water storage device by a system 1 Whether the water temperature is lower than the water temperature T set by the user s If yes, go to step S2, otherwise go to step S4;
s2, increasing the flow proportion of the water outlet of the water storage device in the water mixing valve and/or increasing the water temperature of the water storage device through the heating module, and then executing the step S3;
s3, judging the confluence water outlet temperature T of the water supply pipe and the water storage device by the system t Whether the water temperature is equal to the water temperature T set by the user or not s If yes, go to step S6, otherwise go back to step S2;
s4, increasing the flow proportion of the water output from the water supply pipe in the water mixing valve, and then executing the step S5;
s5, judging the confluence water outlet temperature T of the water supply pipe and the water storage device by the system t Whether it is equal to the user-set water temperature T s If yes, go to step S6, otherwise go back to step S4;
and S6, finishing the adjustment.
According to the control method, a step S1' is further included between the steps S1 and S2, and the step S2 is composed of steps S21 and S22, which are as follows:
s1', the system obtains the water temperature T of the water outlet of the water storage device 1 With the user setting the water temperature T s And determining whether the difference is lower than a set value S, if so, performing step S21, otherwise, performing step S22;
s21, increasing the flow proportion of the water discharged from the water storage device in the water mixing valve, or increasing the water temperature of the water storage device, and then executing the step S3;
and S22, increasing the flow rate proportion of the water discharged from the water storage device in the water mixing valve, and simultaneously increasing the water temperature of the water storage device, and then executing the step S3.
After adopting the technical scheme, compared with the prior art, the invention has the following beneficial effects:
1. the water heater system provided by the invention adopts the water storage device positioned at the upstream to provide temperature compensation for the outlet water of the water heater, so that the whole system can realize constant-temperature water supply without a return water pipeline, and the defect that the zero-cold water scheme is not easy to accept by users due to the problems of pipeline transformation and the like is avoided;
2. in the water heater system provided by the invention, the water storage device can provide temperature compensation for the outlet water of the water heater, and on the other hand, compared with a zero cold water system only modified by using an H valve, the water storage device also plays a certain role in water pressure buffering, so that the service life of an old cold and hot water pipeline connected with the water storage device is greatly prolonged;
3. in the water heater system provided by the invention, the outlet water of the water heater is mixed with the hot water in the water storage device for heating, and the outlet water temperature of the water storage device is directly acquired, so that the problem that the cold water in the pipeline stock needs to be considered when the outlet water temperature of the water heater is determined is solved, the acquired temperature parameters are more accurate, and the system is favorable for adjusting the temperature compensation;
4. according to the control method of the water heater system, provided by the invention, multi-step logic judgment can be carried out according to the positive value, the negative value or the numerical value of the difference value between the water temperature set by a user and the water temperature of the outlet water of the water storage device, so that the accurate compensation of the water temperature of the water using end is realized.
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 be derived from them without inventive effort. In the drawings:
FIG. 1 is a schematic structural view of a water heater system of the present invention;
FIG. 2 is a logic flow diagram of a control method in embodiment 2 of the present invention;
FIG. 3 is a logic flow diagram of a control method in embodiment 3 of the present invention;
in the figure: the water supply system comprises a water heater 1, a water storage device 2, a water mixing valve 3, a water mixing valve 31, a water mixing valve first end, a water mixing valve second end 32, a water mixing valve third end 33, a water using end 4 and a water supply pipe 5.
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.
As shown in fig. 1 to 3, the water heater system for supplying water at constant temperature and the control method thereof according to the present invention add a water storage device at a position close to a water using end, so that cold water stored in an outlet water and a pipe of the water heater is neutralized and converged with hot water in the water storage device, thereby realizing a zero cold water function without installing a return pipe or an H-valve. The control method judges whether temperature compensation needs to be carried out on the water temperature of the water using end according to the difference value of the water outlet temperature of the water storage device and the water temperature set by a user, and the temperature compensation is realized by adjusting the heating temperature of the water storage device and/or the flow proportion of the water mixing valve.
Example 1
In this embodiment, as shown in fig. 1, a constant temperature water supply water heater system is provided, which includes a water heater 1 supplied with water from a water supply pipe 5, and further includes: the water storage device 2 is internally provided with a heating module, is arranged at the upstream close to the water using end and is connected with the water outlet of the water heater 1; the water mixing valve 3 is respectively connected with the water outlet of the water storage device 2 and the water supply pipe 5, and the water outlet of the water mixing valve 3 is connected with the water using end 4; and the control unit is used for controlling the heating temperature of the water storage device 2 according to the difference value between the obtained water outlet temperature of the water storage device and the water temperature set by the user and/or adjusting the flow ratio of the water storage device 2 and the water supply pipe 5 in the water mixing valve 3.
In this embodiment, the system provides temperature compensation for the water outlet of the water heater by adopting the water storage device positioned at the upper reaches, so that the whole system can realize constant-temperature water supply without a water return pipeline, and the defect that a zero-cold water scheme is not easy to accept by users due to the problems of pipeline transformation and the like is avoided. And abandon the design of return water pipeline and also reduced the pipeline burden simultaneously, locate the water storage device water supply process of water end upper reaches and also simplified, need not realize stable constant temperature water supply through the combination of multiple switch valve body and pipeline. The first end 31 of the water mixing valve 3 is connected with the water outlet of the water storage device 2, the second end 32 of the water mixing valve is connected with the water supply pipe 5, the water outlet of the water storage device 2 and the cold water provided by the water supply pipe 5 are converged in the water supply pipe and flow out from the third end 33 to be supplied to the water using end 4, and meanwhile, the water mixing valve 3 can adjust the flow ratio of the first end 31 to the second end 32 according to electric signals; the water storage device 2 can provide temperature compensation for the water discharged from the water heater 1, and on the other hand, compared with a zero-cold water system only modified by an H valve, the water storage device also has a certain water pressure buffering effect, so that the service life of an old cold and hot water pipeline connected with the water storage device is greatly prolonged.
In this embodiment, a first temperature sensor is arranged at a water outlet of the water storage device 2, the first temperature sensor detects the water outlet temperature of the water storage device 2, and the water heater system adjusts the heating temperature of the water storage device 2 and/or the flow ratio of the water mixing valve 3 according to the difference between the water outlet temperature of the water storage device 2 and the water temperature set by a user; preferably, the first temperature sensor is arranged close to the water mixing valve 3 to obtain the temperature of the water discharged from the water storage device 2 and conveyed to the water mixing valve 3.
In this embodiment, the first temperature sensor transmits the detected temperature back to the control unit of the water heater system, and the water heater system compares and calculates the real-time outlet water temperature of the water storage device with the water temperature set by the user, so as to determine whether the temperature compensation of the water end is needed by adjusting the flow distribution of the heating module and/or the water mixing valve of the water storage device. According to the invention, the outlet water of the water heater and the hot water in the water storage device are mixed to raise the temperature, and the outlet water temperature of the water storage device is directly acquired, so that the problem that cold water stored in a pipeline needs to be considered when the outlet water temperature of the water heater is determined is solved, the acquired temperature parameters are more accurate, and the system is beneficial to adjusting the temperature compensation.
In this embodiment, a second temperature sensor is disposed at a water outlet of the water mixing valve 3, the second temperature sensor detects a confluent water temperature of the water storage device 2 and the water supply pipe 5, and the water heater system adjusts a flow ratio of the water mixing valve 3 or finishes adjustment according to a difference between the confluent water temperature and a user-set water temperature.
In this embodiment, the water outlet of the water mixing valve 3, i.e. the third end 33 of the water mixing valve is closer to the water using end 4, the second temperature sensor disposed at the water outlet of the water mixing valve 3 can obtain the temperature of the converged water, the second temperature sensor sends the information to the control unit, and the control unit determines whether the temperature meets the water using requirement and determines whether to continuously adjust various parameters.
In this embodiment, the water temperature stored in the water storage device 2 is set to be not lower than the user-set water temperature.
In this embodiment, the water temperature of the stored water is always kept at a high level (close to or slightly higher than the water temperature set by the user), so that the cold water of the water supply pipe 5 converged by the water mixing valve 3 and the water temperature of the water discharged from the water storage device 2 can meet the requirements of the user, and the compensation of the water temperature of the water using end 4 can be realized at any time. Under the condition that the water supply of the water heater is in a problem or other faults, a connecting pipeline between the water heater and the water storage device is cut off, an external water source supplies water for the water storage device, and the water storage device can utilize the heating module to heat the water body in the water storage device and supply the water to a water using end through the water mixing valve.
Example 2
In this embodiment, as shown in fig. 2, a control method of the water heater system according to embodiment 1 is provided, where the water heater system determines whether temperature compensation needs to be performed on water temperature at a water using end according to a difference between water temperature of water discharged from the water storage device and water temperature set by a user, and the temperature compensation is implemented by adjusting heating temperature of the water storage device and/or flow ratio of the water mixing valve.
In this embodiment, the comparison between the water temperature of the water discharged from the water storage device and the water temperature set by the user may be performed with a multi-step logical judgment according to the positive or negative value of the difference or the value of the difference, and the positive or negative judgment of the difference may determine the relationship between the water temperature of the water discharged from the water storage device and the water temperature set by the user, so as to determine whether the temperature compensation is required.
In this embodiment, when it is detected that the water temperature of the water discharged from the water storage device is not less than the set water temperature of the user, the flow rate ratio of the water discharged from the water supply pipe in the water mixing valve is increased.
In this embodiment, since the temperature of the outlet water of the water storage device reaches or exceeds the temperature set by the user, and the temperature of the balance water end is set, the temperature of the water end can meet the user setting by increasing the flow rate proportion of the cold water of the water supply pipe in the water mixing valve.
The method specifically comprises the following execution steps:
s1, judging the water outlet temperature T of a water storage device by a system 1 Whether the water temperature is lower than the water temperature T set by the user s If yes, go to step S2, otherwise go to step S4;
s2, increasing the flow proportion of the water outlet of the water storage device in the water mixing valve and/or increasing the water temperature of the water storage device through the heating module, and then executing the step S3;
s3, judging the confluence water outlet temperature T of the water supply pipe and the water storage device by the system t Whether it is equal to the user-set water temperature T s If yes, go to step S6, otherwise go back to step S2;
s4, increasing the flow proportion of the water output from the water supply pipe in the water mixing valve, and then executing the step S5;
s5, judging the confluence water outlet temperature T of the water supply pipe and the water storage device by the system t Whether the water temperature is equal to the water temperature T set by the user or not s If yes, go to step S6, otherwise go back to step S4;
and S6, finishing the adjustment.
Example 3
In this embodiment, as shown in fig. 3, a further scheme based on embodiment 2 is as follows:
in this embodiment, the control method further includes: and selecting a mode of adjusting the heating temperature of the water storage device and/or the flow proportion of the water mixing valve to perform temperature compensation according to the difference value between the water outlet temperature of the water storage device and the water temperature set by a user.
In this embodiment, it may be further determined that a single scheme or a combination of multiple schemes is adopted during temperature compensation according to the magnitude of the difference, so as to achieve precise adjustment.
In this embodiment, when it is detected that the water temperature of the water discharged from the water storage device is lower than the user-set water temperature and the difference between the water temperature of the water discharged from the water storage device and the user-set water temperature is lower than a set value, the flow ratio of the water discharged from the water storage device in the water mixing valve is increased, or the water temperature of the water storage device is increased.
In this embodiment, when it is detected that the water temperature of the water discharged from the water storage device is lower than the user-set water temperature and the difference between the water temperature of the water discharged from the water storage device and the user-set water temperature is not lower than the set value, the flow ratio of the water discharged from the water storage device in the water mixing valve is increased, and the water temperature of the water storage device is increased.
In this embodiment, due to the difference between the frequency of use and the difference between the water temperature of the water discharged from the water storage device and the water temperature set by the user, when the difference is small, for example, lower than the set value, the temperature compensation of the discharged water of the water heater can be realized by adopting a single adjustment means. When the difference is large, a plurality of technical means are needed to be combined to realize temperature compensation. The set value is a value preset in the control unit, and can be adjusted by a user or a maintenance worker according to the experience, an instruction manual and the like. In addition, the adjustment means for improving the water temperature of the water storage device is implemented, so that the water temperature in the water storage device can be always kept close to or higher than the water temperature set by a user, and the problem that the water temperature of the stored water is reduced too fast due to the over-low ambient temperature can be solved.
The control flow of example 3 differs from that of example 2 in that: a step S1' is further included between the steps S1 and S2, and the step S2 is composed of steps S21 and S22, which are as follows:
s1, judging the water outlet temperature T of a water storage device by a system 1 Whether the water temperature is lower than the water temperature T set by the user s If yes, go to step S1', otherwise go to step S4;
s1', the system obtains the water temperature T of the water outlet of the water storage device 1 With the user setting the water temperature T s By a difference of (A) andjudging whether the difference value is lower than a set value S, if so, executing a step S21, otherwise, executing a step S22;
s21, increasing the flow proportion of the water discharged from the water storage device in the water mixing valve, or increasing the water temperature of the water storage device, and then executing the step S3;
s22, increasing the flow proportion of the water discharged by the water storage device in the water mixing valve, simultaneously increasing the water temperature of the water storage device, and then executing the step S3;
s3, judging the confluence water outlet temperature T of the water supply pipe and the water storage device by the system t Whether the water temperature is equal to the water temperature T set by the user or not s If yes, go to step S6, otherwise go back to step S1';
s4, increasing the flow proportion of the water output from the water supply pipe in the water mixing valve, and then executing the step S5;
s5, judging the confluence water outlet temperature T of the water supply pipe and the water storage device by the system t Whether it is equal to the user-set water temperature T s If yes, go to step S6, otherwise go back to step S4;
and S6, finishing adjustment.
In the embodiments described above, any process or method descriptions in flowcharts or otherwise described herein may be understood as representing modules, segments, or portions of code which include one or more executable instructions for implementing specific logical functions or steps of the process, and the scope of the preferred embodiments of the present invention includes additional implementations in which functions may be executed out of order from that shown or discussed, including substantially concurrently or in reverse order, depending on the functionality involved, as would be understood by those reasonably skilled in the art of the embodiments of the present invention.
The logic and/or steps represented in the flowcharts or otherwise described herein, e.g., an ordered listing of executable instructions that can be considered to implement logical functions, can be embodied in any computer-readable medium for use by or in connection with an instruction execution system, apparatus, or device, such as a computer-based system, processor-containing system, or other system that can fetch the instructions from the instruction execution system, apparatus, or device and execute the instructions. For the purposes of this description, a "computer-readable medium" can be any means that can contain, store, communicate, propagate, or transport the program for use by or in connection with the instruction execution system, apparatus, or device. More specific examples (a non-exhaustive list) of the computer-readable medium would include the following: an electrical connection (electronic device) having one or more wires, a portable computer diskette (magnetic device), a Random Access Memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber device, and a portable compact disc read-only memory (CDROM). Additionally, the computer-readable medium could even be paper or another suitable medium upon which the program is printed, as the program can be electronically captured, via for instance optical scanning of the paper or other medium, then compiled, interpreted or otherwise processed in a suitable manner if necessary, and then stored in a computer memory.
It should be understood that portions of the present invention may be implemented in hardware, software, firmware, or a combination thereof. In the above embodiments, the various steps or methods may be implemented in software or firmware stored in memory and executed by a suitable instruction execution system. For example, if implemented in hardware, as in another embodiment, any one or combination of the following techniques, which are known in the art, may be used: a discrete logic circuit having a logic gate circuit for implementing a logic function on a data signal, an application specific integrated circuit having an appropriate combinational logic gate circuit, a Programmable Gate Array (PGA), a Field Programmable Gate Array (FPGA), or the like.
It will be understood by those skilled in the art that all or part of the steps carried out in the method of implementing the above embodiments may be implemented by hardware related to instructions of a program, which may be stored in a computer readable storage medium, and the program, when executed, includes one or a combination of the steps of the method embodiments.
In addition, functional units in the embodiments of the present invention may be integrated into one processing module, or each unit may exist alone physically, or two or more units are integrated into one module. The integrated module can be realized in a hardware mode, and can also be realized in a software functional module mode. The integrated module, if implemented in the form of a software functional module and sold or used as a stand-alone product, may also be stored in a computer readable storage medium. The storage medium mentioned above may be a read-only memory, a magnetic or optical disk, etc.
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 utility model provides a water heater system of constant temperature water supply, includes the water heater, the water inlet and the delivery pipe intercommunication of water heater, its characterized in that still includes:
the water storage device is communicated with the water outlet of the water heater and is provided with a heating module for heating water;
the water mixing valve comprises two water inlets and a water outlet, the two water inlets are respectively connected with the water outlet of the water storage device and the water supply pipe, and the water outlet of the water mixing valve is connected with the water using end;
and the control unit is used for controlling the heating temperature of the water storage device according to the difference value between the obtained water outlet temperature of the water storage device and the water temperature set by a user and/or adjusting the flow ratio of the water storage device and the water supply pipe in the water mixing valve.
2. The water heater system for supplying water at constant temperature according to claim 1, wherein a first temperature sensor is arranged at a water outlet of the water storage device, the first temperature sensor detects the water outlet temperature of the water storage device, and the water heater system adjusts the heating temperature of the water storage device and/or the flow ratio of the water mixing valve according to the difference between the water outlet temperature of the water storage device and the water temperature set by a user;
preferably, the first temperature sensor is arranged close to the water mixing valve to acquire the temperature of the water discharged from the water storage device and conveyed to the water mixing valve.
3. The water heater system for supplying water at constant temperature according to claim 1, wherein a second temperature sensor is arranged at the water outlet of the water mixing valve, the second temperature sensor detects the temperature of the confluent water of the water storage device and the water supply pipe, and the water heater system adjusts the flow ratio of the water mixing valve or finishes the adjustment according to the difference between the temperature of the confluent water and the temperature set by a user.
4. The water heater system for supplying water at constant temperature according to claim 1, wherein the temperature of the stored water in the water storage means is set to be not lower than the user-set water temperature.
5. The control method of the water heater system according to any one of claims 1 to 4, wherein the water heater system determines whether temperature compensation for the water temperature at the water using end is required according to the difference between the water temperature of the water discharged from the water storage device and the water temperature set by the user, and the temperature compensation is realized by adjusting the heating temperature of the water storage device and/or the flow ratio of the water mixing valve.
6. The control method of a water heater system according to claim 5, further comprising: and selecting a mode of adjusting the heating temperature of the water storage device and/or the flow proportion of the water mixing valve to perform temperature compensation according to the difference value between the water outlet temperature of the water storage device and the water temperature set by a user.
7. The control method of the water heater system as claimed in claim 6, wherein when it is detected that the water temperature of the water discharged from the water storage device is lower than the water temperature set by the user and the difference between the water temperature of the water discharged from the water storage device and the water temperature set by the user is lower than a set value, the flow ratio of the water discharged from the water storage device in the water mixing valve is increased, or the water temperature of the water storage device is increased;
and when the water outlet temperature of the water storage device is detected to be lower than the set water temperature of a user and the difference value between the water outlet temperature of the water storage device and the set water temperature of the user is not lower than a set value, the flow proportion of the water outlet of the water storage device in the water mixing valve is increased, and meanwhile, the water temperature of the water storage device is increased.
8. The control method of the water heater system as claimed in claim 5, wherein when the water temperature of the water discharged from the water storage device is not less than the set water temperature of the user, the flow rate ratio of the water discharged from the water supply pipe in the water mixing valve is increased.
9. The control method of the water heater system according to any one of claims 5 to 8, comprising the steps of:
s1, judging whether the water outlet temperature T1 of the water storage device is lower than a set water temperature Ts of a user by the system, if so, executing a step S2, and otherwise, executing a step S4;
s2, increasing the flow proportion of the water outlet of the water storage device in the water mixing valve and/or increasing the water temperature of the water storage device through the heating module, and then executing the step S3;
s3, judging whether the confluence water temperature Tt of the water supply pipe and the water storage device is equal to the set water temperature Ts by a user or not by the system, if so, executing a step S6, otherwise, returning to execute a step S2;
s4, increasing the flow proportion of the water output from the water supply pipe in the water mixing valve, and then executing the step S5;
s5, judging whether the confluence water temperature Tt of the water supply pipe and the water storage device is equal to the set water temperature Ts by a user or not by the system, if so, executing a step S6, otherwise, returning to execute a step S4;
and S6, finishing the adjustment.
10. The control method of the water heater system according to claim 9, wherein a step S1' is further included between the steps S1 and S2, and the step S2 is comprised of steps S21 and S22, and is as follows:
s1', the system obtains the difference value between the water outlet temperature T1 of the water storage device and the water temperature Ts set by the user, and judges whether the difference value is lower than the set value S, if so, the step S21 is executed, otherwise, the step S22 is executed;
s21, increasing the flow proportion of the water discharged from the water storage device in the water mixing valve, or increasing the water temperature of the water storage device, and then executing the step S3;
and S22, increasing the flow rate proportion of the water discharged from the water storage device in the water mixing valve, and simultaneously increasing the water temperature of the water storage device, and then executing the step S3.
CN202110459743.5A 2021-04-27 2021-04-27 Water heater system for supplying water at constant temperature and control method Pending CN114963508A (en)

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CN202110459743.5A CN114963508A (en) 2021-04-27 2021-04-27 Water heater system for supplying water at constant temperature and control method

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Application Number Priority Date Filing Date Title
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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN203561073U (en) * 2013-11-18 2014-04-23 绍兴文理学院 Water outlet device of water heater
CN105066432A (en) * 2015-07-30 2015-11-18 芜湖美的厨卫电器制造有限公司 Hot water system, constant temperature device and control method of constant temperature device
CN106895583A (en) * 2015-12-17 2017-06-27 北京奇虎科技有限公司 Temperature control method of water and device
KR101990855B1 (en) * 2017-12-26 2019-06-19 린나이코리아 주식회사 Method for automatically switching hot water and heating of a boiler with low-temperature hot water storage tank

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN203561073U (en) * 2013-11-18 2014-04-23 绍兴文理学院 Water outlet device of water heater
CN105066432A (en) * 2015-07-30 2015-11-18 芜湖美的厨卫电器制造有限公司 Hot water system, constant temperature device and control method of constant temperature device
CN106895583A (en) * 2015-12-17 2017-06-27 北京奇虎科技有限公司 Temperature control method of water and device
KR101990855B1 (en) * 2017-12-26 2019-06-19 린나이코리아 주식회사 Method for automatically switching hot water and heating of a boiler with low-temperature hot water storage tank

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