CN214664759U - Zero-cold-water heater system - Google Patents
Zero-cold-water heater system Download PDFInfo
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- CN214664759U CN214664759U CN202020835309.3U CN202020835309U CN214664759U CN 214664759 U CN214664759 U CN 214664759U CN 202020835309 U CN202020835309 U CN 202020835309U CN 214664759 U CN214664759 U CN 214664759U
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Abstract
The utility model relates to a zero cold water heater system, every water unit of zero cold water heater system includes: the water supply system comprises a branch hot water pipe communicated with a water outlet of the water heater, a branch water 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 a 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 ambient temperature of the water consumption point, the controller is used for judging whether the ambient temperature is within a preset temperature range, and if not, the opening degree of the water mixing valve and the water outlet temperature of the water heater are adjusted so that the water outlet temperature of the water consumption point reaches the preset water temperature.
Description
Technical Field
The utility model relates to an electrical apparatus field especially relates to a zero cold water heater system.
Background
With the improvement of water requirements of people, a zero-cold-water hot water system becomes a universal pursuit of most users; the "zero cold water" is a technology that, when the water heater is used, cold water is pumped back into the water heater to be circularly heated, and then heated hot water is released, so that a user is prevented from flowing out a large amount of cold water when the water heater is started.
At present, a water mixing valve is usually installed 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 proportion of cold water and hot water, so that the purpose of adjusting the outlet water temperature of the water consumption point is achieved. However, the temperature adjusting method may have a problem that the opening degree of the water mixing valve cannot meet the user requirement even if the opening degree of the water mixing valve is adjusted to be the maximum or the minimum, and the user experience is reduced.
SUMMERY OF THE UTILITY MODEL
In view of the above, there is a need for a zero cold water heater system that addresses the above-mentioned problems.
A zero cold water heater system, comprising: the water supply system comprises a controller, a water heater, a circulating water pump and at least one water using unit, wherein 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 use unit comprises: the water supply system comprises a branch hot water pipe communicated with a water outlet of the water heater, a branch return water 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 a 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 ambient temperature of the water consumption point, the controller is used for judging whether the ambient temperature is within a preset temperature range, and if not, the opening degree of the water mixing valve and the water outlet temperature of the water heater are adjusted so that the water outlet temperature of the water consumption point reaches a preset water temperature.
In one embodiment, the controller is further configured to adjust the opening degree of the 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 consumption point and a second mapping relationship between the water outlet temperature of the water consumption point and the opening degree of the water mixing valve, and determine the opening degree 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 degree 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 third mapping relation.
In one embodiment, the number of the water using units is multiple;
when at least two water using units use 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 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 other water consumption points in the water consumption state based on the water outlet temperature of the corresponding water heater and the third mapping relation, so that the water outlet temperatures of the water heaters corresponding to the at least two water consumption units are the same.
In one of the embodiments, the first and second electrodes are,
each of the water using units further includes: the first sensor is electrically connected with the controller and used for detecting whether the water consumption point uses water 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 farthest from the water heater and the rest water consumption points which are in the water consumption state based on the detection result and the position information of the water consumption points.
In one embodiment, each of the water using units further includes: the second sensor is used for acquiring and sending a water using instruction;
the controller is further used for opening the water mixing valve by a delay time threshold value when the water using instruction is received.
In one embodiment, each of the water using units further includes: the second temperature sensor is arranged on the branch hot water pipe, and the stop valve is arranged on the branch water return 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 the 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 the 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 multiple;
the controller is further configured to obtain a first temperature threshold and a second temperature threshold corresponding to the farthest water using unit, and set the first temperature thresholds and the second temperature thresholds corresponding to the remaining water using units to be the same as the first temperature threshold and the second temperature threshold of the farthest water using unit, respectively.
In one embodiment, the zero cold water heater system further comprises: a main water return pipe and a main cold water pipe;
the main water return pipe is communicated with the water inlet pipe and the branch water return pipe of each water using unit, and the circulating water pump is installed on the main water return pipe;
the total cold water pipe is communicated with the water inlet pipe and the branch cold water pipes of the water using units.
As above-mentioned zero cold water heater system, the first temperature sensor of water consumption unit is used for obtaining the ambient temperature that the water consumption point was located, the controller is used for judging whether the ambient temperature that the water consumption point was located is in predetermineeing temperature range, if not, adjust the play water temperature of muddy water valve and water heater, so, when the ambient temperature change that the water consumption point was located is big, the controller need adjust the play water temperature of water heater again with the aperture of muddy water valve, can realize controlling the play water temperature of water consumption point, with the temperature that the water consumption point flows out accords with user's demand, avoid leading to the problem that can't satisfy user's demand even if adjust the aperture of muddy water valve to the biggest or minimum because the ambient temperature change is too big, in addition, also, can improve zero cold water heater system's degree of automation.
Drawings
Fig. 1 is a schematic structural diagram of a zero-cold-water heater system according to an embodiment of the present invention;
fig. 2 is a logic flow chart of water consumption point outlet temperature adjustment in a control method of a zero-cold-water heater system according to an embodiment of the present invention;
fig. 3 is a logic flow chart of the control method for the zero-cooling water heater system according to an embodiment of the present invention, regarding the adjustment of the outlet temperature of the water point in different water usage modes;
fig. 4 is a logic flow chart of a control method for a zero-cold-water heater system according to an embodiment of the present invention, with respect to preheating by a water point.
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 pipe, 420-branch water return pipe, 421-total water return pipe, 430-branch temperature regulating water pipe, 431-total temperature regulating water pipe, 440-water consumption point, 450-water mixing valve, 460-second temperature sensor, 470-stop valve, 480-third temperature sensor;
a-a water inlet pipe.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail by the following embodiments in combination with the accompanying drawings. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention.
It will be understood that when an element is referred to as being "secured 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 as used herein are 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 comprises a controller 200, a water heater, a circulating water pump 300 and at least one water using unit, wherein the water heater, the circulating water pump 300 and the at least one water using unit are all electrically connected with 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 use unit comprises: a branch hot water pipe 410 communicated with the water outlet of the water heater, a branch return water pipe 420 communicated between the water inlet of the circulating water pump 300 and the 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 consumption 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 degree of the water mixing valve 450 and an outlet water temperature of the water heater, so that the outlet water temperature of the water consumption point 440 reaches a preset water temperature.
It should be noted that, the user may set the preset temperature range according to the change of the climate, and considering that most users adopt air-conditioning refrigeration in summer and heating by a heater in winter, and the refrigeration temperature and the heating temperature are generally between 22 ℃ and 25 ℃, the preset temperature range may be set to 22 ℃ to 25 ℃.
Wherein, as an example, the water heater is a gas water heater, including: a housing 110, a valve body assembly, and a heating unit, a bulb 130, and a flow sensor 140 disposed within the housing 110, wherein each heating unit is a burner and a heat exchanger 120; a water outlet and a water inlet are arranged on the shell 110; the burner, the valve body assembly, the bulb 130 and the 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-using unit through a 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 point of use 440 may be a faucet or a shower.
As described above, in the zero-cold-water heater system, the first temperature sensor of the water consumption unit is configured to obtain the ambient temperature of the water consumption point 440, and the controller 200 is configured to determine whether the ambient temperature of the water consumption point 440 is within a preset temperature range, and if not, adjust the opening of the water mixing valve 450 and the water outlet temperature of the water heater, so that when the ambient temperature of the water consumption point 440 changes greatly, the controller 200 not only needs to adjust the opening of the water mixing valve 450 but also needs to adjust 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 of the water consumption point 440 meets the user requirement, thereby avoiding 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 an excessively large change in the ambient temperature, and in addition, the degree of automation of the zero-cold-water heater system can also be improved.
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. So, need not user's manual regulation and mix water valve 450, improve the degree of automation of zero cold water heater system, and then can improve user experience.
In particular, 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 degree of the water mixing valve 450, and determine the opening degree 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 may be set according to user requirements, for example, set in a function form, and corresponding programs are burned onto the controller 200.
Further, and in particular to some embodiments of the present invention, the controller 200 is further configured to: and acquiring a third mapping relation between the opening degree of the mixing valve 450 and the outlet water temperature of the water heater, and determining the outlet water temperature of the water heater based on the opening degree of the mixing valve 450 and the third mapping relation. It should be noted that the third mapping relationship corresponding to each water consumption 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 unit further includes: a third temperature sensor 480 electrically connected to the controller 200, wherein the third temperature sensor 480 is configured to obtain and transmit an actual outlet water temperature of the water consumption point 440 to the controller 200; under the same opening degree of the water mixing valve 450, the controller 200 is configured to gradually adjust the outlet water temperature of the water heater according to a preset step length until the actual outlet water temperature of the water consumption point 440 is the same as the outlet water temperature of the water consumption point 440 calculated through the second mapping relationship, obtain the outlet water temperature of the water heater corresponding to the opening degree of the water mixing valve 450 at this time, repeat the step multiple times, obtain the outlet water temperatures of the water heaters corresponding to the opening degrees of the different water mixing valves 450, and then determine the third mapping relationship based on the opening degrees of the water mixing valves 450 and the outlet water temperature of the water heater corresponding to the opening degree of each water mixing valve 450.
In some embodiments of the present invention, the number of the water using units is plural; when at least two water using units use water, the controller 200 is configured to determine, based on the first mapping relationship, the second mapping relationship, and the third mapping relationship, an outlet water temperature of the water heater corresponding to the water using point 440 which is in a water using state and is farthest from the water heater; based on the outlet water temperature of the corresponding water heater and the third mapping relationship, the opening degrees of the water mixing valves 450 corresponding to the other water consumption points 440 in the water consumption state are adjusted, so that the outlet water temperatures of the water heaters corresponding to the at least two water consumption units are the same.
It should be noted that, since the environmental temperatures of the plurality of water consumption points 440 are generally the same, the outlet water temperature of each water consumption point 440 calculated through the first mapping relationship and the opening degree of the water mixing valve 450 corresponding to each water consumption point 440 calculated through the second mapping relationship are the same. However, consider that the pipeline length between every water point 440 and the delivery port of water heater is different for hot water is different at the heat that flows through pipeline in-process consumed, and then leads to the temperature of the water heater that every water point 440 corresponds to different, this also makes and sets up a plurality of heating unit and a plurality of delivery port in the water heater just, and then can increase the cost of water heater, to this, the embodiment of the utility model provides a through set up as above can make the water temperature of going out of the water heater that at least two water units correspond the same.
Further, in some embodiments of the present invention, each water using unit further comprises: a first sensor electrically connected to the controller 200, for detecting whether the water consumption point 440 uses water and transmitting the detection result and position information of the water consumption point 440 to the controller 200; the controller 200 is further configured to determine the position information of each water usage point 440 in the water usage state based on the detection result and the identification information, and then adjust the opening degree of the mixing valve 450 corresponding to each other water usage point 440 based on the position information.
Alternatively, the first sensor may be an infrared sensor.
In some embodiments of the present invention, each water using unit further comprises: the second sensor is used for acquiring and sending a water using instruction; the controller 200 is further configured to open the mixing valve 450 when the water use command is received and the delay time threshold is set. Therefore, 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, and the like.
As shown in fig. 1, in some embodiments of the present invention, each water using unit further comprises: a second temperature sensor 460 provided on the branch hot water pipe 410 and a shut-off valve 470 provided on the branch return water 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 open 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 a first temperature threshold, and close 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 a second temperature threshold, where the second temperature threshold is greater than the first temperature threshold. It should be noted that the arrows shown in fig. 1 represent the flow direction of the circulating heating water.
When the water usage is finished, the water temperature in each pipeline of the zero-cold water heater system is gradually decreased, and at the same time, the second temperature controller 460 on the water usage unit acquires the temperature information of the branch hot water pipe 410 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 less than or equal to a first temperature threshold (for example, 35 ℃), the controller 200 opens the circulating water pump 300, the stop valve 470 on the water using unit, the burner and the valve body assembly on the water heater, the circulating water pump 300 starts to rotate, the water heater starts to ignite to circularly heat the water of the zero-cold-water heater system, and the water temperature in each pipeline of the zero-cold-water heater system can be ensured not to be lower than the first temperature threshold.
During the ignition operation of the water heater, the second temperature controller 460 on the water using unit obtains the temperature information of the bypass 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 stop valve 470 on the water using unit and the burner and valve body assembly on the water heater are closed, so that when a user needs to use water, only the water using point 440 needs to be opened, and the instant heating and opening are realized, and the user experience is improved.
Thus, 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, and the zero waiting of hot water is realized without manually preheating in advance before water is used;
as shown in fig. 1, in some embodiments of the present invention, the number of the 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 farthest water usage unit, and set the first temperature thresholds and the second temperature thresholds corresponding to the remaining water usage units to be the same as the first temperature threshold and the second temperature threshold of the farthest 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 main water return pipe 421 and a main temperature-adjusting water pipe 431; the main water return pipe 421 is communicated with the water inlet pipe a and the branch water return pipe 420 of each water unit, and the circulating water pump 300 is installed on the main water return pipe 421; the main temperature-adjusting water pipe 431 is communicated with the water inlet pipe a and the branch temperature-adjusting water pipe 430 of each water unit. Thus, the circulation heating of the water heater and the temperature adjustment of the water usage point 440 can be performed independently, and the circulating water pump 300 does not need to be provided with a pump type that can feed water in a reversible manner, so that the cost can be reduced.
Alternatively, as shown in fig. 1, the number of the water using units is 3, and the water using units are a first water using unit, a second water using unit and a third water using unit in a direction away from the water heater. 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 all communicated with a water outlet of the water heater through shared first pipelines; the branch return pipes 420 of the first, second, and third water units are communicated with the water inlet of the thermal cycle water pump 300 through a common second pipe (i.e., a total return pipe 421).
In some embodiments of the present invention, the first temperature threshold is 34-36 ℃, for example, 34 ℃, 34.5 ℃, 35 ℃, 35.5 ℃, 36 ℃ and the like can be set. The second temperature threshold is 44 ℃ to 46 ℃, and may be set to 44 ℃, 44.5 ℃, 45 ℃, 45.5 ℃, 46 ℃ or the like, for example. So set up, can avoid leading to the water heater frequently to start and stop because the difference undersize of first temperature threshold value and second temperature threshold value, prevent that the performance of water heater from reducing and avoiding causing certain noise.
In another embodiment of the present invention, there is also provided a control method of the zero-cold-water heater system, wherein the logic flow chart is shown in fig. 2, and the control method includes:
step S100, acquiring the environment temperature of a water using point 440 of a water using unit;
step S200, determining whether the ambient temperature is within a preset temperature range, if not, adjusting the opening of the water mixing valve 450 corresponding to the water usage point 440 and the water outlet temperature of the water heater, so that the water outlet temperature of the water usage point 440 reaches a 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 not only needs to adjust the opening degree of the water mixing valve 450 but also needs to adjust the water outlet temperature of the water heater, so that the water outlet temperature of the water consumption point 440 can be controlled, the water temperature flowing out of the water consumption point 440 meets the user requirement, and the problem that the user requirement cannot be met even if the opening degree of the water mixing valve 450 is adjusted to be the maximum or the minimum due to the fact that the change of the environmental temperature is too large is solved.
In some embodiments of the present invention, step S200 further comprises: when the ambient temperature is within the preset temperature range, the opening degree of the mixing valve 450 is adjusted. So, need not user's manual regulation and mix water valve 450, improve the degree of automation of zero cold water heater system, and then can improve user experience.
In particular to some embodiments of the present invention, the opening degree of the mixing valve 450 is determined by the following method:
acquiring a first mapping relation between the environment temperature and the water outlet temperature of the water consumption point 440 and a second mapping relation between the water outlet temperature of the water consumption point 440 and the opening degree of the water mixing valve 450;
based on the first and second mapping relationships, the opening degree of the mixing valve 450 is determined.
Optionally, the first mapping relationship and the second mapping relationship may be set according to user requirements, for example, set in a form of a function, and corresponding programs are burned onto the controller 200.
Further, in some embodiments of the present invention, the outlet water temperature of the water heater is determined by the following method:
acquiring a third mapping relation between the opening degree of the water mixing valve 450 and the outlet water temperature of the water heater;
and based on the opening degree of the water mixing valve 450 and the three mapping relations, the outlet water temperature of the water heater.
Alternatively, the third mapping relationship may be determined by: acquiring the actual outlet water temperature of the merging point; under the same opening degree of the water mixing valve 450, the water outlet temperature of the water heater is adjusted gradually according to the preset step length until the actual water outlet temperature of the water consumption point 440 is the same as the water outlet temperature of the water consumption point 440 calculated through the second mapping relation, the water outlet temperature of the water heater corresponding to the opening degree of the water mixing valve 450 is obtained at the moment, the operation is repeated for multiple times, the water outlet temperature of the water heater corresponding to the opening degrees of a plurality of different water mixing valves 450 is obtained, and then the third mapping relation is determined 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 the water using units is plural;
when at least two water using units use water, as shown in the logic flow chart of fig. 3, step S200 includes: determining the number of water consumption of the water consumption points 440 and the position information of each water consumption point 440 in a water consumption state;
when the number of the water consumption points is multiple, determining the water outlet temperature of the water heater corresponding to the water consumption point 440 which is in the water consumption state and farthest from the water heater based on the first mapping relation, the second mapping relation and the third mapping relation;
based on the outlet water temperature of the corresponding water heater and the third mapping relationship, the opening degrees of the remaining water mixing valves 450 in the water use state are adjusted, so that the outlet water temperatures of the water heaters corresponding to the at least two water use units are the same. According to the arrangement, a plurality of heating units and a plurality of water outlets are not required to be arranged in the water heater, and the cost of the water heater can be reduced.
In some embodiments of the present invention, the control method further comprises:
step S300, acquiring a water consumption instruction of each water consumption point 440;
in step S400, the mixing valve 450 corresponding to each water consumption point 440 is opened by extending the time threshold based on the delayed water consumption command. Therefore, 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 shown in 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;
and step S600, when the temperature information is less than or equal to a first temperature threshold value, the water heater, the circulating water pump 300 and the stop valve are opened, and when the temperature information is greater than or equal to a second temperature threshold value, the water heater, the circulating water pump 300 and the stop valve are closed, wherein the second temperature threshold value is greater than the first temperature threshold value.
Therefore, the water is not required to be manually preheated in advance before being used, and zero waiting of hot water is realized.
In some embodiments of the present invention, the first temperature threshold is 34-36 ℃, for example, 34 ℃, 34.5 ℃, 35 ℃, 35.5 ℃, 36 ℃ and the like can be set. The second temperature threshold is 44 ℃ to 46 ℃, and may be set to 44 ℃, 44.5 ℃, 45 ℃, 45.5 ℃, 46 ℃ or the like, for example. So set up, can avoid leading to the water heater frequently to start and stop because the difference undersize of first temperature threshold value and second temperature threshold value, prevent that the performance of water heater from reducing and avoiding causing certain noise.
Further, in some embodiments of the present invention, the number of the water using units is plural; step S500 is preceded by: and acquiring a first temperature threshold and a second temperature threshold corresponding to the farthest water using unit, and setting the first temperature threshold and the second temperature threshold corresponding to the other water using units to be the same as the first temperature threshold and the second temperature threshold of the farthest water using unit respectively. This ensures that each water-consuming unit can be preheated.
An embodiment of the present invention further provides a computer readable storage medium, on which a computer program is stored, and the computer program realizes the steps of the control method when being executed by a processor.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.
Claims (7)
1. A zero cold water heater system, comprising: the water supply system comprises a controller, a water heater, a circulating water pump and at least one water using unit, wherein 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 use unit comprises: the water supply system comprises a branch hot water pipe communicated with a water outlet of the water heater, a branch return water 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 a 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 ambient temperature of the water consumption point, the controller is used for judging whether the ambient temperature is within a preset temperature range, and if not, the opening degree of the water mixing valve and the water outlet temperature of the water heater are adjusted so that the water outlet temperature of the water consumption point reaches a preset water temperature.
2. The zero-cold-water heater system according to claim 1, wherein the set number of the water using units is plural;
when at least two water using units use 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 farthest from the water heater based on a first mapping relation between the environment temperature and the water outlet temperature of the water using point, a second mapping relation between the water outlet temperature of the water using point and the opening degree of the water mixing valve and a third mapping relation between the opening degree of the water mixing valve and the water outlet temperature of the water heater;
and adjusting the opening degrees of the water mixing valves corresponding to the other water consumption points in the water consumption state based on the water outlet temperature of the corresponding water heater and the third mapping relation, so that the water outlet temperatures of the water heaters corresponding to the at least two water consumption units are the same.
3. The zero cold water heater system of claim 2, wherein each water use unit further comprises: the first sensor is electrically connected with the controller and used for detecting whether the water consumption point uses water 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 farthest from the water heater and the rest water consumption points which are in the water consumption state based on the detection result and the position information of the water consumption points.
4. The zero cold water heater system of claim 1, wherein each of the water usage units further comprises: the second sensor is used for acquiring and sending a water using instruction;
the controller is further used for opening the water mixing valve by a delay time threshold value when the water using instruction is received.
5. The zero cold water heater 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 water return 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 the 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 the 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.
6. The zero-cold-water heater system according to claim 5, wherein the set number of the water using units is plural;
the controller is further configured to obtain a first temperature threshold and a second temperature threshold corresponding to the farthest water using unit, and set the first temperature thresholds and the second temperature thresholds corresponding to the remaining water using units to be the same as the first temperature threshold and the second temperature threshold of the farthest water using unit, respectively.
7. The zero cold water heater system of claim 1, further comprising: a main water return pipe and a main cold water pipe;
the main water return pipe is communicated with the water inlet pipe and the branch water return pipe of each water using unit, and the circulating water pump is installed on the main water return pipe;
the total cold water pipe is communicated with the water inlet pipe and the branch cold water pipes of the water using units.
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| CN202020835309.3U CN214664759U (en) | 2020-05-18 | 2020-05-18 | Zero-cold-water heater system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111457460A (en) * | 2020-05-18 | 2020-07-28 | 珠海格力电器股份有限公司 | Zero-cold-water heater system, control method thereof and computer-readable storage medium |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111457460A (en) * | 2020-05-18 | 2020-07-28 | 珠海格力电器股份有限公司 | Zero-cold-water heater system, control method thereof and computer-readable storage medium |
| CN111457460B (en) * | 2020-05-18 | 2024-03-19 | 珠海格力电器股份有限公司 | Zero cold water heater system, control method thereof and computer readable storage medium |
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