CN111457460B - Zero cold water heater system, control method thereof and computer readable storage medium - Google Patents
Zero cold water heater system, control method thereof and computer readable storage medium Download PDFInfo
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- CN111457460B CN111457460B CN202010418900.3A CN202010418900A CN111457460B CN 111457460 B CN111457460 B CN 111457460B CN 202010418900 A CN202010418900 A CN 202010418900A CN 111457460 B CN111457460 B CN 111457460B
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 722
- 238000000034 method Methods 0.000 title claims abstract description 41
- 230000001105 regulatory effect Effects 0.000 claims abstract description 10
- 230000007613 environmental effect Effects 0.000 claims abstract description 7
- 238000013507 mapping Methods 0.000 claims description 73
- 238000001514 detection method Methods 0.000 claims description 6
- 238000004590 computer program Methods 0.000 claims description 4
- 239000000498 cooling water Substances 0.000 abstract description 3
- 238000010438 heat treatment Methods 0.000 description 13
- 238000010586 diagram Methods 0.000 description 6
- 230000008859 change Effects 0.000 description 5
- 238000005057 refrigeration Methods 0.000 description 2
- 238000005496 tempering Methods 0.000 description 2
- 238000004378 air conditioning Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 239000008236 heating water Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
- F24D17/00—Domestic hot-water supply systems
- F24D17/0026—Domestic hot-water supply systems with conventional heating means
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
- F24D17/00—Domestic hot-water supply systems
- F24D17/0078—Recirculation systems
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
- F24D17/00—Domestic hot-water supply systems
- F24D17/0094—Recovering of cold water
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
- F24D19/00—Details
- F24D19/10—Arrangement or mounting of control or safety devices
- F24D19/1006—Arrangement or mounting of control or safety devices for water heating systems
- F24D19/1051—Arrangement or mounting of control or safety devices for water heating systems for domestic hot water
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
- F24D2200/00—Heat sources or energy sources
- F24D2200/04—Gas or oil fired boiler
Abstract
The invention relates to a zero-cooling water heater system, a control method thereof and a computer readable storage medium, wherein each water using unit of the zero-cooling water heater system comprises: the water heater comprises a branch hot water pipe communicated with a water outlet of the water heater, a branch return pipe communicated between a water inlet of the circulating water pump and a water inlet pipe, a branch cold water pipe communicated with the water inlet pipe, a water mixing valve communicated between the branch hot water pipe and the branch cold water pipe and electrically connected with a controller, a water consumption point communicated with the water outlet of the water mixing valve and a first temperature sensor electrically connected with the controller; the first temperature sensor is used for acquiring and sending the environmental temperature of the water point, the controller is used for judging whether the environmental temperature is in a preset temperature range, and if not, the opening of the water mixing valve and the water outlet temperature of the water heater are regulated so that the water outlet temperature of the water point reaches the preset water temperature.
Description
Technical Field
The invention relates to the field of electric appliances, in particular to a zero cold water heater system, a control method thereof and a computer readable storage medium.
Background
With the improvement of water consumption requirements of people, a zero cold water hot water system becomes a common pursuit of most users; the term "zero cold water" refers to a technique of, when the water heater is used, pumping cold water back to the inside of the water heater for cyclic heating, and then releasing the heated hot water, thereby avoiding a large amount of cold water from flowing out when the water heater is turned on.
At present, a water mixing valve is usually arranged at a water consumption point of a zero cold water hot water system, and a user can manually adjust the opening of the water mixing valve to adjust the flow ratio of cold water and hot water, so that the purpose of adjusting the water outlet temperature of the water consumption point is achieved. However, the temperature adjusting method may have the problem that the opening of the water mixing valve cannot meet the user requirement even if the opening is adjusted to the maximum or minimum, and the user experience is reduced.
Disclosure of Invention
In view of the foregoing, it is desirable to provide a zero-water chiller system, a control method thereof, and a computer-readable storage medium.
A zero cold water heater system, the zero cold water heater system comprising: the water heater, the circulating water pump and the at least one water using unit are electrically connected with the controller;
the water inlet of the water heater is communicated with the water inlet pipe and the water outlet of the circulating water pump;
each water-using unit includes: the water heater comprises a branch hot water pipe communicated with a water outlet of the water heater, a branch return pipe communicated between a water inlet of the circulating water pump and the water inlet pipe, a branch cold water pipe communicated with the water inlet pipe, a water mixing valve communicated between the branch hot water pipe and the branch cold water pipe and electrically connected with the controller, a water consumption point communicated with the water outlet of the water mixing valve and a first temperature sensor electrically connected with the controller;
the first temperature sensor is used for acquiring and sending the environment temperature of the water point, the controller is used for judging whether the environment temperature is in a preset temperature range, and if not, the opening of the water mixing valve and the water outlet temperature of the water heater are regulated so that the water outlet temperature of the water point reaches the preset water temperature.
In one embodiment, the controller is further configured to adjust the opening of the water mixing valve when the ambient temperature is within the preset temperature range.
In one embodiment, the controller is further configured to obtain a first mapping relationship between the ambient temperature and the water outlet temperature of the water point, and a second mapping relationship between the water outlet temperature of the water point and the opening of the water mixing valve, and determine the opening of the water mixing valve based on the first mapping relationship and the second mapping relationship.
In one embodiment, the controller is further configured to: and acquiring a third mapping relation between the opening of the water mixing valve and the water outlet temperature of the water heater, and determining the water outlet temperature of the water heater based on the opening of the water mixing valve and the third mapping relation.
In one embodiment, the number of the water using units is a plurality;
when at least two water using units are used for using water, the controller is used for determining the water outlet temperature of the water heater corresponding to the water using point which is in a water using state and is farthest from the water heater based on the first mapping relation, the second mapping relation and the third mapping relation;
and adjusting the opening degrees of the water mixing valves corresponding to the water points in the water consumption state based on the water outlet temperature of the corresponding water heater and the third mapping relation so as to enable the water outlet temperatures of the water heaters corresponding to the at least two water consumption units to be the same.
In one of the embodiments of the present invention,
each water using unit further comprises: the first sensor is electrically connected with the controller and is used for detecting whether the water consumption point is used or not and transmitting a detection result and position information of the water consumption point to the controller;
the controller is used for identifying the water consumption point which is in a water consumption state and is farthest from the water heater and the rest water consumption points in the water consumption state based on the detection result and the position information of the water consumption point.
In one embodiment, each of the water usage units further comprises: the second sensor is used for acquiring and sending a water instruction;
the controller is further configured to delay a time threshold to open the mixing valve when the water usage instruction is received.
In one embodiment, each of the water usage units further comprises: the second temperature sensor is arranged on the branch hot water pipe, and the stop valve is arranged on the branch return water pipe;
the second temperature sensor and the stop valve are electrically connected with the controller, and the controller is further used for opening the water heater, the circulating water pump and the stop valve when temperature information transmitted by the second temperature sensor is smaller than or equal to a first temperature threshold value, and closing the water heater, the circulating water pump and the stop valve when temperature information transmitted by the second temperature sensor is larger than or equal to a second temperature threshold value, wherein the second temperature threshold value is larger than the first temperature threshold value.
In one embodiment, the number of the water using units is a plurality;
the controller is further configured to obtain a first temperature threshold and a second temperature threshold corresponding to the water using unit at the farthest end, and set the first temperature threshold and the second temperature threshold corresponding to the remaining water using units to be the same as the first temperature threshold and the second temperature threshold of the water using unit at the farthest end respectively.
In one embodiment, the zero cold water heater system further comprises: a main return pipe and a main cold water pipe;
the water inlet pipe is communicated with the water inlet pipe and the branch water return pipes of each water using unit, and the circulating water pump is arranged on the water inlet pipe;
the total cold water pipe is communicated with the water inlet pipe and the branch cold water pipes of each water using unit.
A control method of a zero cold water heater system as claimed in any one of the preceding claims, the control method comprising:
acquiring the ambient temperature of a water using point of the water using unit;
and judging whether the environmental temperature is in a preset temperature range, and if not, adjusting the opening of the water mixing valve corresponding to the water consumption point and the water outlet temperature of the water heater so as to enable the water outlet temperature of the water consumption point to reach the preset water temperature.
In one embodiment, the control method further includes: and when the ambient temperature is within the preset temperature range, adjusting the opening of the water mixing valve.
In one embodiment, the opening degree of the water mixing valve is determined by the following method:
acquiring a first mapping relation between the ambient temperature and the water outlet temperature of the water use point and a second mapping relation between the water outlet temperature of the water use point and the opening of the water mixing valve;
and determining the opening of the water mixing valve based on the first mapping relation and the second mapping relation.
In one embodiment, the outlet water temperature of the water heater is determined by the following method:
acquiring a third mapping relation between the opening of the water mixing valve and the water outlet temperature of the water heater;
and determining the water outlet temperature of the water heater based on the opening degree of the water mixing valve and the three mapping relations.
In one embodiment, the water using units are provided in a plurality, and the adjusting the opening of the water mixing valve and the water outlet temperature of the water heater includes:
determining the water consumption number of the water consumption points and the position information of each water consumption point in a water consumption state;
when the number of the water consumption is multiple, determining the water outlet temperature of the water heater corresponding to the water consumption point which is in a water consumption state and farthest from the water heater based on the first mapping relation, the second mapping relation and the third mapping relation;
and adjusting the opening degrees of the water mixing valves corresponding to the water points in the water consumption state based on the water outlet temperature of the corresponding water heater and the third mapping relation so as to enable the water outlet temperatures of the water heaters corresponding to the at least two water consumption units to be the same.
In one embodiment, the control method further includes:
acquiring a water use instruction of each water use point;
and opening a water mixing valve corresponding to each water consumption point by prolonging the time threshold based on the water consumption instruction.
In one embodiment, the control method further includes:
acquiring temperature information of the branch hot water pipes corresponding to the water using units in real time;
and when the temperature information is smaller than or equal to a first temperature threshold value, opening the water heater, the circulating water pump and the stop valve, and when the temperature information is larger than or equal to a second temperature threshold value, closing the water heater, the circulating water pump and the stop valve, wherein the second temperature threshold value is larger than the first temperature threshold value.
In one embodiment, the number of the water using units is a plurality;
before the temperature information of the branch hot water pipe corresponding to each water using unit is obtained in real time, the control method further comprises the following steps:
and acquiring a first temperature threshold value and a second temperature threshold value corresponding to the water using unit at the farthest end, and setting the first temperature threshold value and the second temperature threshold value corresponding to the rest water using units to be the same as the first temperature threshold value and the second temperature threshold value of the water using unit at the farthest end respectively.
A computer readable storage medium having stored thereon a computer program which, when executed by a processor, implements the steps of the control method of any of the preceding claims.
According to the zero cold water heater system, the control method and the computer readable storage medium thereof, the first temperature sensor of the water consumption unit is used for acquiring the ambient temperature of the water consumption point, the controller is used for judging whether the ambient temperature of the water consumption point is in a preset temperature range or not, and if not, the opening degree of the water mixing valve and the water outlet temperature of the water heater are regulated, so that when the ambient temperature of the water consumption point is changed greatly, the controller regulates the opening degree of the water mixing valve and the water outlet temperature of the water heater, the water outlet temperature of the water consumption point can be controlled, the water temperature flowing out of the water consumption point is in accordance with the user requirement, the problem that the user requirement cannot be met even if the opening degree of the water mixing valve is regulated to be the maximum or the minimum due to overlarge ambient temperature change is avoided, and the automation degree of the zero cold water heater system can be improved.
Drawings
FIG. 1 is a schematic diagram of a zero water chiller system according to an embodiment of the present invention;
FIG. 2 is a logic flow diagram of a control method for a zero water chiller system according to an embodiment of the present invention with respect to water outlet temperature adjustment;
FIG. 3 is a logic flow diagram of a control method for a zero water chiller system according to an embodiment of the present invention for water outlet temperature regulation at different water usage modes;
FIG. 4 is a logic flow diagram of a control method of a zero water chiller system according to an embodiment of the present invention with respect to water spot warm-up.
Wherein:
100-water heater, 110-shell, 120-heat exchanger, 130-temperature regulating bag, 140-flow sensor;
200-a controller;
300-a circulating water pump;
410-branch hot water pipes, 420-branch return pipes, 421-main return pipes, 430-branch temperature regulating water pipes, 431-main temperature regulating water pipes, 440-water consumption points, 450-water mixing valves, 460-second temperature sensors, 470-stop valves and 480-third temperature sensors;
and A is a water inlet pipe.
Detailed Description
The present invention will be further described in detail below with reference to examples, which are provided to illustrate the objects, technical solutions and advantages of the present invention. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
It will be understood that when an element is referred to as being "fixed to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. In contrast, when an element is referred to as being "directly on" another element, there are no intervening elements present. The terms "vertical," "horizontal," "left," "right," and the like are used herein for illustrative purposes only.
As shown in fig. 1, an embodiment of the present invention provides a zero cold water heater system, which includes: the water heater, the circulating water pump 300 and at least one water using unit are electrically connected with the controller 200 by the controller 200; the water inlet of the water heater is communicated with the water inlet pipe and the water outlet of the circulating water pump 300; each water-using unit includes: a branch hot water pipe 410 communicated with a water outlet of the water heater, a branch return water pipe 420 communicated between a water inlet of the circulating water pump 300 and a water inlet pipe, a branch temperature-adjusting water pipe communicated with the water inlet pipe, a water mixing valve 450 communicated between the branch hot water pipe 410 and the branch temperature-adjusting water pipe and electrically connected with the controller 200, a water consumption point 440 communicated with the water outlet of the water mixing valve 450, and a first temperature sensor electrically connected with the controller 200; the first temperature sensor is configured to obtain and send an ambient temperature of the water point 440, and the controller 200 is configured to determine whether the ambient temperature is within a preset temperature range, and if not, adjust an opening of the water mixing valve 450 and a water outlet temperature of the water heater so that the water outlet temperature of the water point 440 reaches a preset water temperature.
It should be noted that, the user may set the preset temperature range according to the climate change, and considering that most users use air conditioning refrigeration in summer and heating in winter, the refrigeration temperature and the heating temperature are generally between 22 ℃ and 25 ℃, so the preset temperature range may be set to 22 ℃ to 25 ℃.
Wherein, as an example, the water heater is gas water heater, includes: a housing 110, a valve body assembly, and heating units, a temperature regulating package 130, and a flow sensor 140 disposed within the housing 110, wherein each heating unit is a burner and a heat exchanger 120; the shell 110 is provided with a water outlet and a water inlet; the burner, valve assembly, temperature regulating package 130 and flow sensor 140 are all electrically connected to the controller 200. When the water heater is in a heating state, cold water in the water inlet pipe A flows into the heating unit through the water inlet on the shell 110, and the heating unit heats the cold water; the heated cold water then flows to each water unit through the water outlet on the housing 110.
As an example, the controller 200 is a PLC (Programmable Logic Controller, programmable logic controller 200), and the controller 200 may be installed in the housing 110 of the water heater.
As an example, the water inlet of the water heater is communicated with the water inlet pipe a and the water outlet of the circulating water pump 300 through a tee joint.
As an example, the water spot 440 may be a faucet or a shower.
In the zero-water-cooling water heater system as described above, the first temperature sensor of the water consumption unit is configured to obtain the ambient temperature where the water consumption point 440 is located, and the controller 200 is configured to determine whether the ambient temperature where the water consumption point 440 is located is within the preset temperature range, if not, adjust the opening of the water mixing valve 450 and the water outlet temperature of the water heater, so when the ambient temperature where the water consumption point 440 is located changes greatly, the controller 200 needs to adjust the opening of the water mixing valve 450 and the water outlet temperature of the water heater, so as to control the water outlet temperature of the water consumption point 440, so that the water temperature flowing out from the water consumption point 440 meets the user requirement, and the problem that the user requirement cannot be met even if the opening of the water mixing valve 450 is adjusted to the maximum or minimum due to overlarge ambient temperature change is avoided.
In some embodiments of the present invention, the controller 200 is further configured to adjust the opening degree of the corresponding water mixing valve 450 when the ambient temperature is within the preset temperature range. Thus, the user does not need to manually adjust the water mixing valve 450, the automation degree of the zero cold water heater system is improved, and the user experience can be improved.
Specifically, in some embodiments of the present invention, the controller 200 is further configured to obtain a first mapping relationship between the ambient temperature and the outlet temperature of the water consumption point 440, and a second mapping relationship between the outlet temperature of the water consumption point 440 and the opening of the water mixing valve 450, and determine the opening of the water mixing valve 450 based on the first mapping relationship and the second mapping relationship.
The first mapping relationship and the second mapping relationship can be set by the user according to the user requirement, for example, set into a function form, and the corresponding program is burned onto the controller 200.
Further, in particular to some embodiments of the invention, the controller 200 is further configured to: a third mapping relation between the opening of the water mixing valve 450 and the water outlet temperature of the water heater is obtained, and the water outlet temperature of the water heater is determined based on the opening of the water mixing valve 450 and the third mapping relation. It should be noted that the third mapping relationship corresponding to each water point 440 is different.
Optionally, the controller 200 may determine the third mapping relationship by self-learning, and correspondingly, in some embodiments of the present invention, as shown in fig. 1, each water usage unit further includes: a third temperature sensor electrically connected to the controller 200, the third temperature sensor 480 being configured to acquire and transmit an actual water outlet temperature of the water spot 440 to the controller 200; under the same opening degree of the water mixing valve 450, the controller 200 is configured to sequentially adjust the water outlet temperature of the water heater according to a preset step length until the actual water outlet temperature of the water using point 440 is the same as the water outlet temperature of the water using point 440 calculated by the second mapping relationship, at this time, acquire the water outlet temperature of the water heater corresponding to the opening degree of the water mixing valve 450, repeat for a plurality of times, acquire the water outlet temperatures of the water heater corresponding to the opening degrees of the plurality of different water mixing valves 450, and then determine the third mapping relationship based on the opening degrees of the plurality of water mixing valves 450 and the water outlet temperature of the water heater corresponding to the opening degree of each water mixing valve 450.
In some embodiments of the invention, the number of water usage units is a plurality; when at least two water using units use water, the controller 200 is configured to determine a water outlet temperature of the water heater corresponding to a water using point 440 in a water using state and farthest from the water heater based on the first mapping relationship, the second mapping relationship, and the third mapping relationship; based on the corresponding water outlet temperature of the water heater and the third mapping relation, the opening of the water mixing valve 450 corresponding to the water point 440 in the water using state is adjusted so that the water outlet temperatures of the water heaters corresponding to the at least two water using units are the same.
It should be noted that, since the environmental temperatures of the water usage points 440 are generally the same, the water outlet temperature of each water usage point 440 calculated by the first mapping relationship and the opening of the water mixing valve 450 corresponding to each water usage point 440 calculated by the second mapping relationship are the same. However, considering that the lengths of the pipelines between each water consumption point 440 and the water outlet of the water heater are different, so that the heat consumed by the hot water in the process of flowing through the pipelines is different, and the temperatures of the water heaters corresponding to each water consumption point 440 are different, a plurality of heating units and a plurality of water outlets are needed to be arranged in the water heater, and the cost of the water heater is increased.
Further, in some embodiments of the invention, each water usage unit further comprises: a first sensor electrically connected to the controller 200 for detecting whether the water spot 440 is used and transmitting a detection result and position information of the water spot 440 to the controller 200; the controller 200 is further configured to determine, based on the detection result and the identification information, the position information of each water point 440 in the water consumption state, and then adjust the opening of the water mixing valve 450 corresponding to each other water point 440 based on the position information.
Alternatively, the first sensor may be an infrared sensor.
In some embodiments of the invention, each water usage unit further comprises: the second sensor is used for acquiring and sending a water instruction; the controller 200 is also configured to delay the time threshold opening the mixing valve 450 when a water use command is received. Thus, the water heater can be prevented from working due to misoperation of a user.
Optionally, the second sensor is an infrared sensor.
Alternatively, the time threshold may be 3S to 5S, for example, 3S, 4S, 5S, etc.
As shown in fig. 1, in some embodiments of the invention, each water-using unit further comprises: a second temperature sensor 460 provided on the bypass hot water pipe 410 and a shut-off valve 470 provided on the bypass return pipe 420; the controller 200 is electrically connected to the water heater, the circulating water pump 300, the second temperature sensor 460 and the stop valve 470, respectively, and the controller 200 is configured to turn on the water heater, the circulating water pump 300 and the stop valve 470 when the temperature information transmitted by the second temperature sensor 460 is less than the first temperature threshold, and turn off the water heater, the circulating water pump 300 and the stop valve 470 when the temperature information transmitted by the second temperature sensor 460 is greater than the second temperature threshold, wherein the second temperature threshold is greater than the first temperature threshold. The arrows shown in fig. 1 represent the flow direction of the circulating heating water.
When the water consumption is completed, the water temperature in each pipeline of the zero-water heater system is gradually reduced, and meanwhile, the second temperature sensor 460 on the water consumption unit acquires the temperature information of the branch hot water pipe 410 in real time, and the temperature information is transmitted to the controller 200. When the temperature of the branch hot water pipe 410 of the water using unit is less than or equal to the first temperature threshold (for example, 35 ℃), the controller 200 turns on the circulating water pump 300, the stop valve 470 of the water using unit and the burner and valve body assembly of the water heater, the circulating water pump 300 starts to rotate, and the water heater starts to perform ignition operation to circularly heat the water of the zero-cold water heater system, so that the water temperature in each pipeline of the zero-cold water heater system is not lower than the first temperature threshold, and thus, not only can the water heater located in the cold area be not required to be additionally provided with antifreezing measures, but also the scale generation inside each pipeline can be prevented.
During the ignition operation of the water heater, the second temperature sensor 460 on the water unit acquires the temperature information of the branch temperature-adjusting water pipe 430 in real time, and transmits the temperature information to the controller 200. When the temperature of the branch hot water pipe 410 of the water using unit is heated to the second temperature threshold (for example, 45 ℃), the circulating water pump 300, the stop valve 470 on the water using unit, the burner on the water heater and the valve body assembly are closed, so that when a user needs water, the user only needs to open the water using point 440, the instant heating is realized, and the user experience is improved.
In this way, the controller 200 automatically controls the water heater, the circulating water pump 300 and the stop valve 470 to be opened and closed according to the temperature of the water using unit transmitted by the second temperature sensor 460, so that the pre-heating is not required to be performed manually before the water is used, and the zero waiting of hot water is realized;
as shown in fig. 1, in some embodiments of the present invention, the number of water-using units is plural; the controller 200 is further configured to obtain a first temperature threshold and a second temperature threshold corresponding to the most remote water usage unit, and set the first temperature threshold and the second temperature threshold corresponding to the remaining water usage units to be the same as the first temperature threshold and the second temperature threshold of the most remote water usage unit, respectively. This ensures that each water-consuming unit can be preheated.
In some embodiments of the present invention, as shown in fig. 1, the zero cold water heater system further comprises: a total return pipe 421 and a total temperature-adjusting pipe 431; the main return pipe 421 is communicated with the water inlet pipe A and the branch return pipe 420 of each water using unit, and the circulating water pump 300 is arranged on the main return pipe 421; the total tempering water pipe 431 is in communication with the inlet pipe a and the branch tempering water pipe 430 of each water usage unit. In this way, the circulation heating of the water heater and the temperature adjustment of the water point 440 can be performed independently, and the circulation water pump 300 does not need to be set as a pump capable of reversely flowing water, thereby reducing the cost.
Alternatively, as shown in fig. 1, the number of water usage units is 3, and the water usage units are respectively a first water usage unit, a second water usage unit and a third water usage unit in a direction away from the water heater. Wherein the first water unit and the second water unit share a part of branch hot water pipes 410, and the branch hot water pipes 410 of the first water unit, the second water unit and the third water unit are communicated with the water outlet of the water heater through a shared first pipeline; the branch return pipes 420 of the first, second and third water units are communicated with the water inlet of the circulating water pump 300 through a common second pipe (i.e., the total return pipe 421).
In some embodiments of the invention, the first temperature threshold is 34 ℃ to 36 ℃, for example, 34 ℃, 34.5 ℃, 35 ℃, 35.5 ℃, 36 ℃, etc. may be set. The second temperature threshold is 44-46 ℃, for example, 44 ℃, 44.5 ℃,45 ℃, 45.5 ℃,46 ℃, etc. can be set. By the arrangement, the water heater can be prevented from being started and stopped frequently due to the fact that the difference value between the first temperature threshold value and the second temperature threshold value is too small, the service performance of the water heater is prevented from being reduced, and certain noise is avoided.
In another embodiment of the present invention, a control method of the above-mentioned zero cold water heater system is further provided, wherein a logic flow chart is shown in fig. 2, and the control method includes:
step S100, acquiring the ambient temperature of a water consumption point 440 of a water consumption unit;
step 200, determining whether the ambient temperature is within a preset temperature range, and if not, adjusting the opening of the water mixing valve 450 corresponding to the water point 440 and the water outlet temperature of the water heater so that the water outlet temperature of the water point 440 reaches the preset water temperature.
According to the control method of the zero-cold water heater system, when the change of the environmental temperature of the water consumption point 440 is large, the controller 200 can control the water outlet temperature of the water consumption point 440 by adjusting the opening of the water mixing valve 450 and the water outlet temperature of the water heater so as to meet the user requirement by using the water temperature of the water consumption point 440, and the problem that the user requirement cannot be met even if the opening of the water mixing valve 450 is adjusted to be the maximum or minimum due to the overlarge change of the environmental temperature is avoided.
In some embodiments of the present invention, step S200 further includes: when the ambient temperature is within the preset temperature range, the opening degree of the water mixing valve 450 is adjusted. Thus, the user does not need to manually adjust the water mixing valve 450, the automation degree of the zero cold water heater system is improved, and the user experience can be improved.
Specifically, in some embodiments of the present invention, the opening of the mixing valve 450 is determined by:
acquiring a first mapping relation between the ambient temperature and the water outlet temperature of the water use point 440, and a second mapping relation between the water outlet temperature of the water use point 440 and the opening of the water mixing valve 450;
the opening degree of the water mixing valve 450 is determined based on the first map and the second map.
Optionally, the first mapping relationship and the second mapping relationship may be set by the user according to the user requirement, for example, set into a function form, and the corresponding program is burned onto the controller 200.
Further, in some embodiments of the present invention, the outlet water temperature of the water heater is determined by:
acquiring a third mapping relation between the opening of the water mixing valve 450 and the water outlet temperature of the water heater;
based on the opening degree of the water mixing valve 450 and the three mapping relations, the water outlet temperature of the water heater is obtained.
Alternatively, the third mapping relationship may be determined as follows: acquiring the actual water outlet temperature of the water point; and under the opening degree of the same water mixing valve 450, gradually adjusting the water outlet temperature of the water heater according to a preset step length until the actual water outlet temperature of the water using point 440 is the same as the water outlet temperature of the water using point 440 calculated through the second mapping relation, at this time, obtaining the water outlet temperature of the water heater corresponding to the opening degree of the water mixing valve 450, repeating for a plurality of times, obtaining the water outlet temperatures of the water heater corresponding to the opening degrees of a plurality of different water mixing valves 450, and then determining a third mapping relation based on the opening degrees of the water mixing valves 450 and the water outlet temperature of the water heater corresponding to the opening degree of each water mixing valve 450.
Further, in some embodiments of the present invention, the number of water-using units is plural;
when at least two water using units are using water, as in the logic flow diagram shown in fig. 3, step S200 includes: determining the number of water usage of the water usage points 440 and positional information of each water usage point 440 in a water usage state;
when the number of water consumption points is a plurality of, determining the water outlet temperature of the water heater corresponding to the water consumption point 440 which is in a water consumption state and farthest from the water heater based on the first mapping relation, the second mapping relation and the third mapping relation;
and adjusting the opening degree of the water mixing valve 450 in the water using state based on the water outlet temperature of the corresponding water heater and the third mapping relation so as to make the water outlet temperatures of the water heaters corresponding to at least two water using units identical. As the water heater is arranged, a plurality of heating units and a plurality of water outlets are not required to be arranged in the water heater, and therefore the cost of the water heater can be reduced.
In some embodiments of the invention, the control method further comprises:
step S300, obtaining a water consumption instruction of each water consumption point 440;
step S400, based on the delayed water use command, the extended time threshold opens the water mixing valve 450 corresponding to each water use point 440. Thus, the water heater can be prevented from working due to misoperation of a user.
In some embodiments of the present invention, as shown in the logic flow diagram of fig. 4, the control method further includes:
step S500, acquiring temperature information of the branch hot water pipe 410 corresponding to each water using unit in real time;
step S600, when the temperature information is less than or equal to the first temperature threshold, opening the water heater, the circulating water pump 300, and the shut-off valve, and when the temperature information is greater than or equal to the second temperature threshold, closing the water heater, the circulating water pump 300, and the shut-off valve, wherein the second temperature threshold is greater than the first temperature threshold.
Therefore, the preheating is not needed to be carried out in advance manually before water is used, and zero waiting of hot water is realized.
In some embodiments of the invention, the first temperature threshold is 34 ℃ to 36 ℃, for example, 34 ℃, 34.5 ℃, 35 ℃, 35.5 ℃, 36 ℃, etc. may be set. The second temperature threshold is 44-46 ℃, for example, 44 ℃, 44.5 ℃,45 ℃, 45.5 ℃,46 ℃, etc. can be set. By the arrangement, the water heater can be prevented from being started and stopped frequently due to the fact that the difference value between the first temperature threshold value and the second temperature threshold value is too small, the service performance of the water heater is prevented from being reduced, and certain noise is avoided.
Further, in some embodiments of the present invention, the number of water-using units is plural; the step S500 further includes: and acquiring a first temperature threshold and a second temperature threshold corresponding to the water using unit at the farthest end, and setting the first temperature threshold and the second temperature threshold corresponding to the rest water using units to be the same as the first temperature threshold and the second temperature threshold of the water using unit at the farthest end respectively. This ensures that each water-consuming unit can be preheated.
An embodiment of the present invention also provides a computer-readable storage medium having stored thereon a computer program which, when executed by a processor, implements the steps of the control method described above.
The technical features of the above-described embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above-described embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.
The above examples illustrate only a few embodiments of the invention, which are described in detail and are not to be construed as limiting the scope of the invention. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the invention, which are all within the scope of the invention. Accordingly, the scope of protection of the present invention is to be determined by the appended claims.
Claims (15)
1. A zero-cold water heater system, the zero-cold water heater system comprising: the water heater, the circulating water pump and the at least one water using unit are electrically connected with the controller;
the water inlet of the water heater is communicated with the water inlet pipe and the water outlet of the circulating water pump;
each water-using unit includes: the water heater comprises a branch hot water pipe communicated with a water outlet of the water heater, a branch return pipe communicated between a water inlet of the circulating water pump and the water inlet pipe, a branch cold water pipe communicated with the water inlet pipe, a water mixing valve communicated between the branch hot water pipe and the branch cold water pipe and electrically connected with the controller, a water consumption point communicated with the water outlet of the water mixing valve and a first temperature sensor electrically connected with the controller;
the first temperature sensor is used for acquiring and sending the environment temperature of the water point, the controller is used for judging whether the environment temperature is in a preset temperature range, and if not, the opening of the water mixing valve and the water outlet temperature of the water heater are regulated so that the water outlet temperature of the water point reaches the preset water temperature;
the controller is further configured to obtain a first mapping relationship between the ambient temperature and the water outlet temperature of the water point and a second mapping relationship between the water outlet temperature of the water point and the opening of the water mixing valve, and determine the opening of the water mixing valve based on the first mapping relationship and the second mapping relationship;
wherein the controller is further configured to: acquiring a third mapping relation between the opening of the water mixing valve and the water outlet temperature of the water heater, and determining the water outlet temperature of the water heater based on the opening of the water mixing valve and the third mapping relation; the third mapping relation corresponding to each water consumption point is different.
2. The zero water chiller system of claim 1 wherein the controller is further configured to adjust the opening of the water mixing valve when the ambient temperature is within the preset temperature range.
3. The zero water chiller system of claim 1 wherein the number of water usage units is a plurality;
when at least two water using units are used for using water, the controller is used for determining the water outlet temperature of the water heater corresponding to the water using point which is in a water using state and is farthest from the water heater based on the first mapping relation, the second mapping relation and the third mapping relation;
and adjusting the opening degrees of the water mixing valves corresponding to the water points in the water consumption state based on the water outlet temperature of the corresponding water heater and the third mapping relation so as to enable the water outlet temperatures of the water heaters corresponding to the at least two water consumption units to be the same.
4. The zero water chiller system of claim 3 wherein each water usage unit further comprises: the first sensor is electrically connected with the controller and is used for detecting whether the water consumption point is used or not and transmitting a detection result and position information of the water consumption point to the controller;
the controller is used for identifying the water consumption point which is in a water consumption state and is farthest from the water heater and the rest water consumption points in the water consumption state based on the detection result and the position information of the water consumption point.
5. The zero water chiller system of claim 1 wherein each of the water usage units further comprises: the second sensor is used for acquiring and sending a water instruction;
the controller is further configured to delay a time threshold to open the mixing valve when the water usage instruction is received.
6. The zero water chiller system of claim 1 wherein each of the water usage units further comprises: the second temperature sensor is arranged on the branch hot water pipe, and the stop valve is arranged on the branch return water pipe;
the second temperature sensor and the stop valve are electrically connected with the controller, and the controller is further used for opening the water heater, the circulating water pump and the stop valve when temperature information transmitted by the second temperature sensor is smaller than or equal to a first temperature threshold value, and closing the water heater, the circulating water pump and the stop valve when temperature information transmitted by the second temperature sensor is larger than or equal to a second temperature threshold value, wherein the second temperature threshold value is larger than the first temperature threshold value.
7. The zero water chiller system of claim 6 wherein the number of water usage units is a plurality;
the controller is further configured to obtain a first temperature threshold and a second temperature threshold corresponding to the water using unit at the farthest end, and set the first temperature threshold and the second temperature threshold corresponding to the remaining water using units to be the same as the first temperature threshold and the second temperature threshold of the water using unit at the farthest end respectively.
8. The zero-cold water heater system of claim 1, further comprising: a main return pipe and a main cold water pipe;
the water inlet pipe is communicated with the water inlet pipe and the branch water return pipes of each water using unit, and the circulating water pump is arranged on the water inlet pipe;
the total cold water pipe is communicated with the water inlet pipe and the branch cold water pipes of each water using unit.
9. A control method of a zero-water cold water heater system as claimed in any one of claims 1 to 8, wherein the control method comprises:
acquiring the ambient temperature of a water using point of the water using unit;
judging whether the environmental temperature is in a preset temperature range, if not, adjusting the opening of the water mixing valve corresponding to the water consumption point and the water outlet temperature of the water heater so as to enable the water outlet temperature of the water consumption point to reach a preset water temperature;
the opening degree of the water mixing valve is determined by the following method:
acquiring a first mapping relation between the ambient temperature and the water outlet temperature of the water use point and a second mapping relation between the water outlet temperature of the water use point and the opening of the water mixing valve;
determining the opening of the water mixing valve based on the first mapping relation and the second mapping relation;
the outlet water temperature of the water heater is determined by the following method:
acquiring a third mapping relation between the opening of the water mixing valve and the water outlet temperature of the water heater; the third mapping relation corresponding to each water consumption point is different;
and determining the water outlet temperature of the water heater based on the opening degree of the water mixing valve and the three mapping relations.
10. The control method according to claim 9, characterized in that the control method further comprises: and when the ambient temperature is within the preset temperature range, adjusting the opening of the water mixing valve.
11. The control method according to claim 9, wherein the number of the water use units is plural, and the adjusting the opening degree of the water mixing valve and the water outlet temperature of the water heater includes:
determining the water consumption number of the water consumption points and the position information of each water consumption point in a water consumption state;
when the number of the water consumption is multiple, determining the water outlet temperature of the water heater corresponding to the water consumption point which is in a water consumption state and farthest from the water heater based on the first mapping relation, the second mapping relation and the third mapping relation;
and adjusting the opening degrees of the water mixing valves corresponding to the water points in the water consumption state based on the water outlet temperature of the corresponding water heater and the third mapping relation so as to enable the water outlet temperatures of the water heaters corresponding to the at least two water consumption units to be the same.
12. The control method according to claim 9 or 10, characterized in that the control method further comprises:
acquiring a water use instruction of each water use point;
and opening a water mixing valve corresponding to each water consumption point by prolonging the time threshold based on the water consumption instruction.
13. The control method according to claim 9 or 10, characterized in that the control method further comprises:
acquiring temperature information of the branch hot water pipes corresponding to the water using units in real time;
and when the temperature information is smaller than or equal to a first temperature threshold value, opening the water heater, the circulating water pump and the stop valve, and when the temperature information is larger than or equal to a second temperature threshold value, closing the water heater, the circulating water pump and the stop valve, wherein the second temperature threshold value is larger than the first temperature threshold value.
14. The control method according to claim 13, wherein the number of the water usage units is plural;
before the temperature information of the branch hot water pipe corresponding to each water using unit is obtained in real time, the control method further comprises the following steps:
and acquiring a first temperature threshold value and a second temperature threshold value corresponding to the water using unit at the farthest end, and setting the first temperature threshold value and the second temperature threshold value corresponding to the rest water using units to be the same as the first temperature threshold value and the second temperature threshold value of the water using unit at the farthest end respectively.
15. A computer-readable storage medium, on which a computer program is stored, characterized in that the computer program, when being executed by a processor, implements the steps of the control method of any one of claims 9 to 14.
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| CN202010418900.3A CN111457460B (en) | 2020-05-18 | 2020-05-18 | Zero cold water heater system, control method thereof and computer readable storage medium |
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| CN112629034A (en) * | 2020-12-02 | 2021-04-09 | 华帝股份有限公司 | Remote control's zero cold water preheats temperature control system fast |
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| CN214664759U (en) * | 2020-05-18 | 2021-11-09 | 珠海格力电器股份有限公司 | Zero-cold-water heater system |
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| CN111457460A (en) | 2020-07-28 |
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