CN112443984A - Water heater and go out water control system, water supply system thereof - Google Patents
Water heater and go out water control system, water supply system thereof Download PDFInfo
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- CN112443984A CN112443984A CN202011348327.XA CN202011348327A CN112443984A CN 112443984 A CN112443984 A CN 112443984A CN 202011348327 A CN202011348327 A CN 202011348327A CN 112443984 A CN112443984 A CN 112443984A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H9/00—Details
- F24H9/20—Arrangement or mounting of control or safety devices
- F24H9/2007—Arrangement or mounting of control or safety devices for water heaters
- F24H9/2035—Arrangement or mounting of control or safety devices for water heaters using fluid fuel
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H9/00—Details
- F24H9/0005—Details for water heaters
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H9/00—Details
- F24H9/12—Arrangements for connecting heaters to circulation pipes
- F24H9/13—Arrangements for connecting heaters to circulation pipes for water heaters
- F24H9/139—Continuous flow heaters
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H9/00—Details
- F24H9/18—Arrangement or mounting of grates or heating means
- F24H9/1809—Arrangement or mounting of grates or heating means for water heaters
- F24H9/1818—Arrangement or mounting of electric heating means
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Abstract
The invention discloses a water heater, a water outlet control system and a water supply system thereof, wherein the water outlet control system judges whether a summer heating mode is met or not according to the inlet water temperature collected by an inlet water temperature sensor and the outlet water temperature collected by an outlet water temperature sensor, if so, the combustion heating mode of the water heater is stopped, and a heating module is controlled to heat water in a thermal pond to a first set temperature range; and the water in the thermal pond neutralizes the water output by the heat exchanger so as to reduce the temperature of the outlet water to a second set temperature range. The invention has the advantages that the water outlet in summer is not hot, the water outlet temperature is stable, when the water heater stops for a period of time and then boils water, the hot water in the thermal pond is adopted to neutralize a small segment of cold water output by the heat exchanger, the water outlet speed is high for the first time, and the use comfort and experience of users are improved; still possess the mode of preventing frostbite, further promoted the whole performance of water heater.
Description
Technical Field
The invention relates to the technical field of water heaters, in particular to a water heater and a water outlet control system and a water supply system thereof.
Background
When a user uses the water heater to cut off water midway and then boils water, the machine firstly determines that the water inflow reaches the starting flow rate and then starts combustion, and the water outlet temperature gradually reaches the set temperature, so that the cold water at the stage can reduce the use comfort of the user. Meanwhile, the fluctuation of water flow in the using process can also influence the fluctuation of the outlet water temperature, so that the outlet water temperature is suddenly cooled and suddenly heated. In addition, when the water heater is used in summer, the water is over-temperature, the use comfort of a user is affected, and even the situation that the user cannot use the water heater due to over-ironing occurs, so that the use requirement of the user cannot be met.
Disclosure of Invention
The invention aims to overcome the defect that the water outlet control of a water heater in the prior art cannot meet the use requirements of users, and provides the water heater, a water outlet control system and a water supply system thereof.
The invention solves the technical problems through the following technical scheme:
the invention provides a water outlet control system of a water heater, which comprises a thermal pond device, a water inlet temperature sensor, a water outlet temperature sensor, a three-way valve and a controller, wherein the thermal pond device comprises a thermal pond and a heating module;
the water inlet temperature sensor is arranged on a water inlet pipeline of a water inlet of the water heater, and the water outlet temperature sensor and the thermal pond are sequentially arranged on a water outlet pipeline between a water outlet end and a water outlet of a heat exchanger of the water heater;
the water inlet end of the three-way valve is communicated with the water inlet of the water heater, the first water outlet end of the three-way valve is communicated with the water inlet end of the heat exchanger, and the second water outlet end of the three-way valve is communicated with the water outlet end of the thermal pond device through a bypass pipeline;
the water inlet temperature sensor, the water outlet temperature sensor, the heating module and the three-way valve are all electrically connected with the controller;
the controller is used for judging whether a summer heating mode is met or not according to the inlet water temperature collected by the inlet water temperature sensor and the outlet water temperature collected by the outlet water temperature sensor, if so, stopping the combustion heating mode of the water heater, controlling the heating module to heat water in the thermal pond to a first set range, and controlling bypass flow corresponding to the second outlet water end based on the inlet water temperature and the outlet water temperature;
and the water output by the heat exchanger is neutralized by the water in the thermal power pool and the water in the bypass pipeline in sequence so as to reduce the temperature of the outlet water to a second set temperature range.
Preferably, the controller obtains a total inflow flow and a preset outflow temperature in the water inlet pipeline respectively, calculates the bypass flow corresponding to the bypass pipeline according to the total inflow flow, the preset outflow temperature, the inflow temperature and the outflow temperature, and controls a valve opening corresponding to the second outflow end of the three-way valve according to the bypass flow.
Preferably, the calculation formula corresponding to the bypass flow calculated by the controller is as follows:
VA＝V*(T0-Tset)/(T0-Tinflow water)
Wherein, VARepresenting said bypass flow, V representing said total intake flow, T0Indicating said water outlet temperature, TInflow waterRepresents the temperature of the feed water, TsetAnd representing the preset outlet water temperature.
Preferably, the controller is configured to determine whether the water inlet temperature is greater than a first set temperature, and/or determine whether the water outlet temperature is greater than a second set temperature for a first set duration, and if not, determine that the water heater is not in a summer heating mode and control the water heater to maintain a minimum load combustion mode; if yes, determining that the water heater is in a summer heating mode and controlling the heating module to start heating.
Preferably, the thermal pond device further comprises a water storage temperature sensor, and the water storage temperature sensor is arranged on the thermal pond;
the water storage temperature sensor is used for acquiring the water storage temperature corresponding to the water in the thermal power pool and sending the water storage temperature to the controller;
the controller is used for controlling the heating module to stop heating when the stored water temperature is higher than a third set temperature;
the controller is also used for controlling the heating module to start heating again when the water storage temperature is detected to be lower than a fourth set temperature;
when the water heater stops for a period of time and boils water again, the hot water in the heat power pool neutralizes a section of cold water output by the heat exchanger so that zero cold water of the water heater is discharged.
Preferably, the heating module comprises a heating wire wound on the outer surface of the heat pool;
the thermal pond device also comprises a heat-insulating layer structure;
the heating power pool, the heating wires and the water storage temperature sensor are all arranged inside the heat insulation layer structure.
Preferably, the water outlet control system further comprises an air temperature sensor arranged in the water heater, and the air temperature sensor is electrically connected with the controller;
the air temperature sensor is used for acquiring the ambient temperature in the water heater and sending the ambient temperature to the controller;
the controller is used for detecting whether the ambient temperature is lower than a fifth set temperature or not when the thermal pond device is in a working state, and if so, controlling the three-way valve to be in a fully-open state and controlling a circulating pump in the water heater to be opened to work;
when the circulating pump is started to work, hot water in the thermal pond circulates in the circulating loop to neutralize cold water in the pipe.
Preferably, the controller is further configured to control the three-way valve to be in a fully closed state and control the circulation pump to stop working when the ambient temperature and/or the outlet water temperature is greater than a sixth set temperature;
the controller is further configured to detect whether the ambient temperature is less than a fifth set temperature after the circulation pump is started for a second set duration, and if so, control the thermal pond device to stop working and control the water heater to start a minimum load combustion mode to heat water in the circulation loop.
The invention also provides a water heater, which comprises the water outlet control system of the water heater.
The invention also provides a water supply system, which comprises the water heater, a one-way valve and a plurality of water outlet taps, wherein the water supply system comprises the water heater;
the water outlet of the water heater is communicated with the water inlet through a connecting pipeline, and the one-way valve and the water outlet faucet are both arranged on the connecting pipeline;
when the one-way valve is closed, each water outlet faucet can discharge water; when the one-way valve is disconnected, water cannot be discharged from each water outlet faucet.
The positive progress effects of the invention are as follows:
according to the invention, the operation environment of the machine is automatically identified through the arrangement of the thermal power pool device, the thermal power pool heating mode is automatically started in the summer heating mode, the water output by the heat exchanger is neutralized through the water in the thermal power pool, so that the temperature of the outlet water of the water outlet is reduced to the preset temperature range, and the effect of no scalding of the outlet water in summer is realized; the water flow passing through the bypass pipeline is accurately controlled, so that the stability of the outlet water temperature is further improved while the outlet water temperature is prevented from being overhigh; the temperature of the stored water in the thermal power pool is monitored to always control the water in the thermal power pool to be kept in a certain temperature range, and when the water heater stops for a period of time and then boils water, hot water in the thermal power pool is adopted to neutralize a small segment of cold water output by the heat exchanger, so that the stability of the water outlet temperature is realized, the time of first water outlet is greatly shortened, the water outlet speed is effectively improved, and the use comfort and experience of a user are improved; in addition, still possess the mode of preventing frostbite, further promoted the whole performance of water heater.
Drawings
Fig. 1 is a first structural schematic diagram of a water outlet control system of a water heater according to embodiment 1 of the present invention.
Fig. 2 is a second structural schematic diagram of the water outlet control system of the water heater according to embodiment 1 of the invention.
Fig. 3 is a schematic diagram of the water flow direction of the water outlet control system of the water heater in the heating mode of the heat pool according to embodiment 1 of the present invention.
Fig. 4 is a schematic diagram of the water flow direction of the water outlet control system of the water heater in the anti-freezing mode according to embodiment 1 of the invention.
Fig. 5 is a schematic structural view of a water supply system according to embodiment 3 of the present invention.
Detailed Description
The invention is further illustrated by the following examples, which are not intended to limit the scope of the invention.
Example 1
As shown in fig. 1 and 2, the water outlet control system of the water heater of the present embodiment includes a thermal pond device 1, an inlet water temperature sensor 2, an outlet water temperature sensor 3, a three-way valve 4 and a controller 5.
The inlet water temperature sensor 2 is arranged on the water inlet pipeline of the water inlet of the water heater, and the outlet water temperature sensor 3 and the thermal pond device 1 are sequentially arranged on the water outlet pipeline between the water outlet end and the water outlet of the heat exchanger (A in figure 2) of the water heater.
The water inlet end of the three-way valve 4 is communicated with the water inlet of the water heater, the first water outlet end of the three-way valve 4 is communicated with the water inlet end of the heat exchanger, and the second water outlet end of the three-way valve 4 is communicated with the water outlet end of the thermal power pool device through a bypass pipeline.
The inlet water temperature sensor 2, the outlet water temperature sensor 3 and the thermal pond device 1 are all electrically connected with the controller 5.
The controller 5 is used for judging whether a summer heating mode is met according to the water inlet temperature collected by the water inlet temperature sensor 2 and the water outlet temperature collected by the water outlet temperature sensor 3, if so, stopping the combustion heating mode of the water heater, controlling the heating module to heat water in the thermal pond to a first set temperature range, and controlling bypass flow corresponding to the second water outlet end based on the water inlet temperature and the water outlet temperature.
Specifically, the controller 5 is configured to determine whether the water inlet temperature is greater than a first set temperature, and/or determine whether the water outlet temperature is greater than a second set temperature and lasts for a first set duration, and if not, determine that the water heater is not in a summer heating mode and control the water heater to maintain a minimum load combustion mode; if yes, determining that the water heater is in a summer heating mode and controlling the heating module to start heating.
And the water output by the heat exchanger is neutralized by the water in the thermal power pool and the water in the bypass pipeline in sequence so as to reduce the temperature of the outlet water to a second set temperature range.
The automatic identification of the machine operation environment is realized through the arrangement of the heat pool device 1, and a minimum load combustion mode is kept in a non-summer heating mode; the heating mode of the thermal power pool is automatically started in the heating mode in summer, water output by the heat exchanger is neutralized by water in the thermal power pool so as to reduce the outlet water temperature of the water outlet to a preset temperature range, the problem that the outlet water temperature is too high due to the fact that the inlet water temperature in summer is high and the machine adopts minimum load heating to cause the outlet water temperature to be higher than the preset temperature is avoided, and therefore the effect that the outlet water in summer is not hot is achieved, and the use comfort level of a user is guaranteed.
Further, as shown in fig. 3, the arrow direction is a water flow direction, that is, after the inlet water flows into the inlet pipe through the water inlet, one path of the inlet water is heated by the heat exchanger and is output to the hot water tank for neutralization, and the other path of the inlet water is directly output through the bypass, and is neutralized again with the neutralized water in the hot water tank and is output from the water outlet, so as to prevent the occurrence of the situation of overheating of the outlet water in summer.
In addition, the controller respectively obtains the total inflow flow and the preset outlet temperature in the water inlet pipeline, calculates the bypass flow corresponding to the bypass pipeline according to the total inflow flow, the preset outlet temperature, the inflow temperature and the outlet temperature, and controls the valve opening corresponding to the second outlet end of the three-way valve 4 according to the bypass flow.
The calculation formula corresponding to the bypass flow obtained by the controller through calculation is as follows:
assuming the cross-sectional area of the pipeline is consistent, V is VA+VB，Q＝QA+QB；
Wherein, VAIndicating the water flow in the bypass line, VBRepresenting the water flow in the heat exchanger, V representing the total inlet water flow;
QArepresenting the heat quantity, Q, of the water in the heat exchangerBRepresents the heat of the water in the bypass, and Q represents the heat of the discharged water;
the specific heat capacity at constant pressure of the introduced water is obtained: cWater (W)mT＝CWater (W)mBTB+CWater (W)mATA
Then derived: vA＝V*(TB-T)/(TB-TA)
CWater (W)Represents the specific heat capacity at constant pressure of water, m represents mass, ρWater (W)Denotes the density of water, TAIndicating the temperature, T, in the bypass lineBRepresents the hot water temperature in the heat exchanger, and T represents the outlet water temperature.
At the moment when the three-way valve is opened, the temperature of the water in the heat exchanger should be the temperature of the outlet water before the bypass line is opened, i.e. TB＝T0The T outlet water temperature should be the set temperature TsetAnd the temperature of water in the bypass pipeline is the temperature of inlet water, so that the following formula can be obtained:
VA＝V*(T0-Tset)/(T0-Tinflow water)
Wherein, VARepresenting said bypass flow, V representing said total intake flow, T0Indicating said water outlet temperature, TInflow waterRepresents the temperature of the feed water, TsetAnd representing the preset outlet water temperature.
In this embodiment, through the discharge that accurate control bypass line flows through, realize when preventing that the outlet water temperature is too high, further improve outlet water temperature's stability, satisfy user's higher user demand, promoted user's comfort level and use and experienced.
The total water inlet flow in the water inlet pipeline is directly acquired through a flowmeter arranged on the pipeline and fed back to the controller.
The heating power pool device 1 of this embodiment includes heating power pool 6, heating module 7, water storage temperature sensor 8 and heat preservation layer structure 9, and heating power pool 6, heater strip and water storage temperature sensor 8 all set up inside heat preservation layer structure 9. The material of the insulating layer structure 9 can be determined and adjusted according to actual use requirements.
The thermal power pool 6 is arranged on a water outlet pipeline between the water outlet end and the water outlet of the heat exchanger of the water heater and is water storage equipment for storing a certain amount of water.
The heating module 7 includes, but is not limited to, heating wires, but may be other devices that can heat the heat cell 6.
When the heating module 7 is a heating wire, the heating wire is wound and arranged on the outer surface of the heat pool 6. In order to meet different heating requirements, the heating wires can be uniformly arranged, and the materials, the lengths and the like of the heating wires are reselected and adjusted according to actual requirements.
The heating module 7 is electrically connected with the controller 5, and the heating module 7 is used for starting heating work after receiving a control instruction sent by the controller 5 so as to heat the water in the heat pool 6 to a certain temperature.
The stored water temperature sensor 8 is provided on the heat cell 6, and in particular, may be provided on an outer surface of the heat cell 6. The water storage temperature sensor 8 is used for acquiring the water storage temperature corresponding to the water in the thermal pond 6 and sending the water storage temperature to the controller 5;
the controller 5 is used for controlling the heating module 7 to stop heating when the stored water temperature is higher than a third set temperature;
the controller 5 is also used for controlling the heating module 7 to start heating again when the stored water temperature is detected to be lower than the fourth set temperature;
when the water heater stops for a period of time and then boils water, the hot water in the heat pool 6 neutralizes a period of cold water output by the heat exchanger so that zero cold water of the water heater is discharged.
The temperature of the stored water in the thermal power pool 6 is monitored to always control the water in the thermal power pool to be kept in a certain temperature range; when the water heater stops for a period of time and then boils water, the hot water in the thermal pond 6 is adopted to neutralize a small segment of cold water output by the heat exchanger, so that the water outlet temperature is stable, the time of first water outlet is greatly shortened, the problem that the time of first water outlet of the water heater is slow is solved, the water outlet speed is effectively improved, and the use comfort and the experience feeling of a user are improved.
The water outlet control system of the embodiment further comprises an air temperature sensor 10 arranged in the water heater, and the air temperature sensor 10 is electrically connected with the controller 5.
The air temperature sensor 10 is used for acquiring the ambient temperature inside the water heater and sending the ambient temperature to the controller 5, the controller 5 is used for detecting whether the ambient temperature is lower than a fifth set temperature when the thermal power pool device 1 is in a working state, and if so, the three-way valve is controlled to be in a full-open state and a circulating pump (B in fig. 2) in the water heater is controlled to be started to work;
as shown in fig. 4, a circulation loop (the direction of the arrow indicates the direction of water flow in the circulation loop) is formed between the circulation pump, the heat exchanger and the heat pool device 1, when the circulation pump is started to work, hot water in the heat pool 6 circulates in the circulation loop to neutralize cold water in the pipe, so that the pipeline corresponding to the circulation loop is also heated, and the situation that the weak part in the pipeline is frozen and cracked is avoided; the heat pool unit 1 is also kept in a heated state during the on-duty of the circulation pump.
The controller 5 is also used for controlling the three-way valve to be in a fully closed state and controlling the circulating pump to stop working when the ambient temperature and/or the outlet water temperature are/is greater than a sixth set temperature;
the controller 5 is further configured to detect whether the ambient temperature is less than a fifth set temperature after the circulation pump is turned on for a second set time period, and if so, control the thermal pool device 1 to stop working and control the water heater to turn on the minimum load combustion mode to heat the water in the circulation loop. For example, after the circulating pump operates for 1 hour, the ambient temperature is still lower than 5 ℃, which indicates that the external ambient temperature is very low, at this time, the thermal pond device 1 is adopted to heat water to achieve the anti-freezing function, the minimum load combustion mode of the water heater needs to be started to heat water in the circulating loop to achieve a certain temperature, and then the anti-freezing effect is achieved, so that the product performance of the water heater is improved.
The water outlet control principle of the water outlet control system of the water heater is concretely implemented by combining the following examples:
(1) in the default condition, the water heater adopts a minimum load combustion mode for heating; when the inlet water temperature T in the heating mode is detectedinNot less than 25 ℃ and the water outlet temperature ToutNot less than the preset temperature TsetIf the temperature is +3 ℃ and lasts for 30s, the water heater is determined to be operated in a summer heating mode, and the machine is controlled to be switched to a heating mode of the heat pool at the moment;
under the heating mode of the thermal power pool, the water in the thermal power pool is heated to a certain temperature through the heating module, so that the water at the output end of the heat exchanger is reduced to a set temperature range, and the aim of preventing the hot water from being burnt in summer is fulfilled.
Meanwhile, the water flow passing through the bypass pipeline is obtained and controlled through accurate calculation, so that the stability of the outlet water temperature is further improved while the outlet water temperature is prevented from being overhigh;
(2) detecting the water outlet temperature T of the water in the thermal pond in real time through a water storage temperature instrument, wherein when T is less than or equal to (T)setControlling the heating pool device to start heating when the temperature is-15 ℃ or 20 ℃; when T is not less than (T)setControlling the heating pond device to stop heating at-10 ℃ or 30 ℃; thus, the water in the heat pool can be always kept between 20 ℃ and 30 ℃;
after the water heater is stopped for a long time and boiled water is boiled again, a small segment of cold water output by the heat exchanger can be neutralized in the thermal pond, so that the time of first water outlet is greatly shortened under the condition of ensuring the stability of the temperature of the outlet water.
(3) When the thermal pond device is in a heating working state, the controller judges the ambient temperature acquired by the air temperature sensor in real time, and when the ambient temperature is less than or equal to 5 ℃, the machine enters an anti-freezing mode to prevent a weak part in a pipeline from being frozen and cracked, so that the service life of the water heater is prolonged;
specifically, the three-way valve is controlled to be in a fully open state and a circulating pump arranged at the front end of the heat exchanger is controlled to be started to work, so that heated water in the thermal pond is driven to circulate in a small loop in the machine to neutralize cold water, and the thermal pond device is always kept in a heating state; and once the temperature of the water in the pipeline or the ambient temperature is more than or equal to 15 ℃, controlling the three-way valve to be in a fully closed state and controlling the circulating pump to stop working.
If the environmental temperature is still lower than the set temperature after the circulating pump is started to operate for 1 hour, the current environmental temperature is indicated to be too low, the heat pool device cannot effectively prevent freezing only, at the moment, the working mode of the machine needs to be switched to the minimum load combustion mode, and water in the circulating loop is heated so as to reach the set temperature in time.
In the embodiment, the operation environment of the machine is automatically identified through the arrangement of the thermal power pool device, the thermal power pool heating mode is automatically started in the summer heating mode, water output by the heat exchanger is neutralized through the water in the thermal power pool, so that the temperature of the outlet water of the water outlet is reduced to be within a preset temperature range, and the effect of non-scalding of the outlet water in summer is realized; the water flow passing through the bypass pipeline is accurately controlled, so that the stability of the outlet water temperature is further improved while the outlet water temperature is prevented from being overhigh; meanwhile, the temperature of the stored water in the thermal power pool is monitored to always control the water in the thermal power pool to be kept in a certain temperature range, and when the water heater is stopped for a period of time and then boiled, hot water in the thermal power pool is adopted to neutralize a small segment of cold water output by the heat exchanger, so that the stability of the water outlet temperature is realized, the time of first water outlet is greatly shortened, the water outlet speed is effectively improved, and the use comfort and experience of a user are improved; in addition, still possess the mode of preventing frostbite, further promoted the whole performance of water heater.
Example 2
The water heater of the embodiment comprises the water outlet control system of the water heater of the embodiment 1. The water heater includes, but is not limited to, a gas water heater.
By arranging the water outlet control system, the water outlet of the water heater in the embodiment is not hot in summer, the water flow passing through the bypass pipeline is accurately controlled, and the stability of the water outlet temperature is further improved while the overhigh water outlet temperature is prevented; when the water heater stops for a period of time and then boils water, hot water in the thermal pond is adopted to neutralize a small section of cold water output by the heat exchanger, so that the water outlet temperature is stable, the time for first water outlet is greatly shortened, the water outlet speed is effectively improved, and the use comfort and experience of users are improved; in addition, still possess the mode of preventing frostbite, further promoted the whole performance of water heater.
Example 3
As shown in fig. 5, the water heater of the present embodiment includes the water outlet control system of the water heater of embodiment 2.
The water supply system of the embodiment also comprises a one-way valve 11 and a plurality of water outlet taps 12;
the water outlet and the water inlet of the water heater are communicated through a connecting pipeline, and the one-way valve 11 and the water outlet tap 12 are both arranged on the connecting pipeline;
when the one-way valve 11 is closed, each water outlet faucet 12 can discharge water; when the check valve 11 is disconnected, water cannot be discharged from each water outlet tap 12.
The water supply system of this embodiment includes foretell water heater, controls effectively that water tap goes out water in summer and does not scald, the leaving water temperature is stable, the time of first water is short promptly to go out the advantage that the water speed is faster, has promoted user's use comfort and experience and feels.
While specific embodiments of the invention have been described above, it will be appreciated by those skilled in the art that this is by way of example only, and that the scope of the invention is defined by the appended claims. Various changes and modifications to these embodiments may be made by those skilled in the art without departing from the spirit and scope of the invention, and these changes and modifications are within the scope of the invention.
Claims (10)
1. The water outlet control system of the water heater is characterized by comprising a thermal pond device, a water inlet temperature sensor, a water outlet temperature sensor, a three-way valve and a controller, wherein the thermal pond device comprises a thermal pond and a heating module;
the water inlet temperature sensor is arranged on a water inlet pipeline of a water inlet of the water heater, and the water outlet temperature sensor and the thermal pond are sequentially arranged on a water outlet pipeline between a water outlet end and a water outlet of a heat exchanger of the water heater;
the water inlet end of the three-way valve is communicated with the water inlet of the water heater, the first water outlet end of the three-way valve is communicated with the water inlet end of the heat exchanger, and the second water outlet end of the three-way valve is communicated with the water outlet end of the thermal pond device through a bypass pipeline;
the water inlet temperature sensor, the water outlet temperature sensor, the heating module and the three-way valve are all electrically connected with the controller;
the controller is used for judging whether a summer heating mode is met or not according to the inlet water temperature collected by the inlet water temperature sensor and the outlet water temperature collected by the outlet water temperature sensor, if so, stopping the combustion heating mode of the water heater, controlling the heating module to heat water in the thermal pond to a first set range, and controlling bypass flow corresponding to the second outlet water end based on the inlet water temperature and the outlet water temperature;
and the water output by the heat exchanger is neutralized by the water in the thermal power pool and the water in the bypass pipeline in sequence so as to reduce the temperature of the outlet water to a second set temperature range.
2. The water outlet control system of the water heater according to claim 1, wherein the controller obtains a total water inlet flow and a preset water outlet temperature in the water inlet pipeline, calculates the bypass flow corresponding to the bypass pipeline according to the total water inlet flow, the preset water outlet temperature, the water inlet temperature and the water outlet temperature, and controls a valve opening corresponding to a second water outlet end of the three-way valve according to the bypass flow.
3. The water outlet control system of the water heater as claimed in claim 2, wherein the calculation formula corresponding to the bypass flow calculated by the controller is as follows:
VA＝V*(T0-Tset)/(T0-Tinflow water)
Wherein, VARepresenting said bypass flow, V representing said total intake flow, T0Indicating said water outlet temperature, TInflow waterRepresents the temperature of the feed water, TsetAnd representing the preset outlet water temperature.
4. The water outlet control system of the water heater as claimed in claim 1, wherein the controller is configured to determine whether the inlet water temperature is greater than a first set temperature, and/or determine whether the outlet water temperature is greater than a second set temperature for a first set time period, and if not, determine that the water heater is not in a summer heating mode and control the water heater to maintain a minimum load combustion mode; if yes, determining that the water heater is in a summer heating mode and controlling the heating module to start heating.
5. The water outlet control system of the water heater as claimed in claim 1 or 4, wherein the thermal cell device further comprises a water storage temperature sensor, and the water storage temperature sensor is arranged on the thermal cell;
the water storage temperature sensor is used for acquiring the water storage temperature corresponding to the water in the thermal power pool and sending the water storage temperature to the controller;
the controller is used for controlling the heating module to stop heating when the stored water temperature is higher than a third set temperature;
the controller is also used for controlling the heating module to start heating again when the water storage temperature is detected to be lower than a fourth set temperature;
when the water heater stops for a period of time and boils water again, the hot water in the heat power pool neutralizes a section of cold water output by the heat exchanger so that zero cold water of the water heater is discharged.
6. The water outlet control system of the water heater as claimed in claim 5, wherein the heating module comprises a heating wire wound around an outer surface of the heat sink;
the thermal pond device also comprises a heat-insulating layer structure;
the heating power pool, the heating wires and the water storage temperature sensor are all arranged inside the heat insulation layer structure.
7. The water outlet control system of the water heater as claimed in claim 1, further comprising an air temperature sensor disposed within the water heater, the air temperature sensor being electrically connected to the controller;
the air temperature sensor is used for acquiring the ambient temperature in the water heater and sending the ambient temperature to the controller;
the controller is used for detecting whether the ambient temperature is lower than a fifth set temperature or not when the thermal pond device is in a working state, and if so, controlling the three-way valve to be in a fully-open state and controlling a circulating pump in the water heater to be opened to work;
when the circulating pump is started to work, hot water in the thermal pond circulates in the circulating loop to neutralize cold water in the pipe.
8. The water outlet control system of the water heater according to claim 7, wherein the controller is further configured to control the three-way valve to be in a fully closed state and control the circulation pump to stop working when the ambient temperature and/or the outlet water temperature is greater than a sixth set temperature;
the controller is further configured to detect whether the ambient temperature is less than a fifth set temperature after the circulation pump is started for a second set duration, and if so, control the thermal pond device to stop working and control the water heater to start a minimum load combustion mode to heat water in the circulation loop.
9. A water heater comprising the water outlet control system of the water heater of any one of claims 1-8.
10. A water supply system comprising the water heater of claim 9, the water supply system further comprising a one-way valve and a plurality of spigot taps;
the water outlet of the water heater is communicated with the water inlet through a connecting pipeline, and the one-way valve and the water outlet faucet are both arranged on the connecting pipeline;
when the one-way valve is closed, each water outlet faucet can discharge water; when the one-way valve is disconnected, water cannot be discharged from each water outlet faucet.
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| CN112443984B (en) | 2022-03-22 |
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