CN112443980A - Water way system of water heating device and control method - Google Patents
Water way system of water heating device and control method Download PDFInfo
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- CN112443980A CN112443980A CN201910804620.3A CN201910804620A CN112443980A CN 112443980 A CN112443980 A CN 112443980A CN 201910804620 A CN201910804620 A CN 201910804620A CN 112443980 A CN112443980 A CN 112443980A
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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
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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
Abstract
The invention discloses a waterway system of a water heating device and a control method, wherein the waterway system comprises: the water heating device is respectively connected with the water inlet pipe and the water outlet pipe; the cold water storage device is connected with the water inlet pipe through a first branch and is connected with the water outlet pipe through a second branch, a first valve for controlling the water flow circulation state is arranged on the first branch, and a second valve for controlling the water flow circulation state is arranged on the second branch; the control valve is arranged between the water outlet of the water heating device and the water outlet pipe; or the water outlet pipe is arranged on the water outlet pipe and is positioned at the front end of the connecting position of the second branch and the water outlet pipe. According to the water way system of the water heating device, the cold water storage device is arranged, most cold water in the water outlet pipe can be sucked into the cold water storage device for storage, so that hot water flows out only after a small amount of cold water is discharged from the water using terminal, the time of waiting for hot water is greatly shortened for a user, and the use experience of the user is improved.
Description
Technical Field
The invention belongs to the technical field of water heating equipment, and particularly relates to a water way system of a water heating device and a control method thereof.
Background
When the water heater does not flow out hot water for a certain time, the stored water in the pipeline between the water outlet of the water heater and the water using terminal is cooled, and when a user uses hot water, the cold water in the section must be discharged firstly, and then the hot water flows out, so that the waste of water resources is caused. If the water heater is used during bathing, cold water is directly sprayed on the body of a user, and the use experience of the user is also reduced, so that zero cold water is an important direction for improving the use performance of the water heater product. At present, the main mode for solving the problem is to add a circulating water pump and a corresponding control system, and simultaneously adjust an outer pipeline of the water heater to form a circulating pipeline from a water outlet of the water heater to a water inlet of the water heater through various hot water using points, so that before a user uses hot water, the water heater is driven by the circulating water pump to heat water stored in the water heater and the circulating pipeline. The water heater designed based on the mode has the problem that cold water is discharged from a water outlet, is particularly obvious when a single backheating water pipeline is adopted in a circulating pipeline, and is particularly suitable for a gas water heater, the main reason is that the starting time is long, the processes of confirming water flow by a water flow sensor, cleaning before a fan, igniting, opening a valve body and the like generally need 5 to 8 seconds, the water flow of about 1 second can be basically ensured by water stored in a water pipe inside the water heater, and a large amount of cold water is necessarily discharged when the water heater is started in the state. This is unacceptable for a zero cold water rapid water heater. Secondly, this kind of mode needs set up circulating pump, circulating line simultaneously when the installation water heater, to the water heater that has assembled, carries out the pipeline again and reforms transform the difficulty heavily, is difficult to realize.
In addition, the zero cold water function is mostly aimed at improving a gas water heater at present, rarely improves an electric water heater, a solar water heater and an air energy water heater, and adopts a mode of directly discharging a section of cold water in a pipeline, so that the problem of water resource waste still exists.
Disclosure of Invention
The invention provides a water path system of a water heating device and a control method thereof, aiming at the technical problems that cold water is stored in a pipeline between a water outlet of a water heater and a water using terminal in the prior art, so that the cold water is discharged firstly when hot water is used, water resource waste is caused, and user experience is reduced.
In order to realize the purpose of the invention, the invention is realized by adopting the following technical scheme:
a water circuit system for a water heating device, comprising:
the water heating device is respectively connected with the water inlet pipe and the water outlet pipe;
the cold water storage device is connected with the water inlet pipe through a first branch and is connected with the water outlet pipe through a second branch, a first valve for controlling the water flow circulation state is arranged on the first branch, and a second valve for controlling the water flow circulation state is arranged on the second branch;
the control valve is arranged between the water outlet of the water heating device and the water outlet pipe; or the water outlet pipe is arranged on the water outlet pipe and is positioned at the front end of the connecting position of the second branch and the water outlet pipe.
Further, in the above-mentioned case,
the cold water storage device comprises:
the water storage container is provided with a closed water storage cavity, and the water storage cavity is respectively communicated with the first branch and the second branch;
and the water suction and drainage control component is used for controlling the water in the water outlet pipe to be sucked into the water storage cavity or discharging the water in the water storage cavity into the water inlet pipe.
Further, in the above-mentioned case,
the water suction and drainage control assembly comprises:
the air tank is internally provided with a closed tank cavity, and the water storage container is arranged in the tank cavity;
the air pump, one of them gas port of air pump with tank chamber intercommunication, another gas port and outside atmosphere intercommunication, the air pump is through adjusting gas pressure in the tank chamber, control water storage container will water in the outlet pipe inhales to in the water storage chamber, perhaps will water in the water storage chamber is discharged to in the inlet tube.
Further, a first flow detection element is arranged in the first branch, and/or a second flow detection element is arranged in the water inlet pipe.
Further, the water heating device is any one of a gas water heater, an electric water heater, a solar water heater and a heat pump water heater.
The invention also provides a water way control method of the water heating device, which comprises the following steps:
a hot water opening action detection step, when the hot water opening is detected, executing the following steps:
a cold water storage step, namely blocking the hot water in the water heating device from being conveyed to the water outlet pipe, and sucking the water in the water outlet pipe into the cold water storage device for storage;
and a cold water discharging step, namely starting the water heating device to output hot water to the water outlet pipe, discharging water in the cold water storage device to the water inlet pipe, and flowing back to the water heating device through the water inlet pipe.
Further, in the above-mentioned case,
after the hot water opening action is detected, the method further comprises the following steps:
and judging the current starting state, and executing the cold water storage step only when the current starting state is cold starting.
Further, the method for judging the starting state comprises the following steps:
and detecting the water flow in the water inlet pipe, if the water flow in the water inlet pipe is not more than a first set value and the set time T is continued, judging that the current starting state is cold starting, otherwise, judging that the current starting state is not cold starting.
Further, in the above-mentioned case,
after the cold water discharging step, further comprising:
and a cold water discharge detection step of detecting whether water in the cold water storage device is completely discharged or not, and stopping cold water discharge after the water is completely discharged.
Further, the detection method in the hot water opening action detection step is as follows:
and detecting the water flow in the water inlet pipe, and if the water flow in the water inlet pipe is greater than a second set value, judging that the hot water is started.
Compared with the prior art, the invention has the advantages and positive effects that: according to the water way system of the water heating device, the cold water storage device is arranged, most cold water in the water outlet pipe can be sucked into the cold water storage device for storage, so that hot water flows out only after a small amount of cold water is discharged from the water using terminal, the time of waiting for hot water is greatly shortened for a user, and the use experience of the user is improved. Meanwhile, cold water stored in the cold water storage device can return to the water heating device through the water inlet pipe to be heated, so that water resources are fully utilized, and waste is reduced.
Other features and advantages of the present invention will become more apparent from the following detailed description of the invention when taken in conjunction with the accompanying drawings.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
FIG. 1 is a schematic structural diagram of a waterway system of a water heating device according to an embodiment of the present invention;
fig. 2 is a flowchart of a water path control method for a water heating device according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail with reference to the accompanying drawings and examples.
It should be noted that in the description of the present invention, the terms of direction or positional relationship indicated by the terms "front", "rear", "inside", "outside", and the like are based on the directions or positional relationships shown in the drawings, which are merely for convenience of description, and do not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In a first embodiment, a current hot water heating device generally includes electric heating, gas heating, solar heating, and heat pump system heating, and cold water enters the hot water heating device through a water inlet pipe to perform heat exchange and temperature rise, and then is discharged through a water outlet pipe to be supplied to a user. In order to solve the problem that cold water is discharged first when hot water is used in some cases, the present embodiment provides a water path system for a water heating device, which includes a water heating device 11, a cold water storage device 12 and a control valve 13, wherein the water heating device 11 is connected to a water inlet pipe 14 and a water outlet pipe 15 respectively; the cold water storage device 12 is connected with a water inlet pipe 14 through a first branch pipe 16 on one hand, and is connected with a water outlet pipe 15 through a second branch pipe 17 on the other hand, a first valve 18 for controlling the water flow circulation state is arranged on the first branch pipe 16, and a second valve 19 for controlling the water flow circulation state is arranged on the second branch pipe 17; the control valve 13 is arranged between the water heating device 11 and the water outlet pipe 15 and is used for connecting or disconnecting the water heating device 11 and the water outlet pipe 15. The control valve 13 should be disposed at the front end of the connection position of the second branch 17 and the water outlet pipe 15, near the water outlet of the water heating device 11, so that when the control valve 13 is detected to be turned on by hot water, the water using terminal is turned on at this time, and is communicated with the external air pressure, so that the water in the water outlet pipe 15 can be pumped into the cold water storage device, the other end of the water inlet pipe 14 is connected with the tap water pipe, and the other end of the water outlet pipe 15 is connected with the water using terminal.
According to the water heating device waterway system, the cold water storage device 12 is arranged, when hot water is detected, the control valve 13 is closed, the cold water storage device 12 sucks cold water in the water outlet pipe 15 into the water storage device through the second branch 17, the cold water passes through the second valve 19 when passing through the second branch 17, and the water outlet pipe 15 circulates to the cold water storage device 12 under the action of the second valve 19. The second valve 19 can be realized by an electromagnetic valve, or by a one-way valve, and when the one-way valve is adopted, the water outlet pipe 15 is communicated with the cold water storage device 12. In order to prevent the cold water in the water inlet pipe 14 from entering the cold water storage device 12 through the first branch 16, the first valve 18 functions to prevent the water flow from the water inlet pipe 14 to the cold water storage device 12, the first valve 18 can be realized by an electromagnetic valve or a one-way valve, when the one-way valve is adopted, the cold water storage device 12 is communicated with the water inlet pipe 14, the control valve 13 is opened after the water outlet pipe 15 has no cold water, the hot water in the heating water device 11 can directly reach the water using end through the water outlet pipe 15, therefore, no cold water is discharged from the water using end, the hot water can be directly discharged, the cold water stored in the cold water storage device 12 is discharged into the water inlet pipe 14, then enters the heating water device 11 through the water inlet pipe 14 for heating, finally, the water using end is supplied through the water outlet pipe 15, when the cold water in the cold water storage device 12 is discharged into the water inlet pipe 14, when the second valve, in order to prevent cold water from entering the water outlet pipe 15 from the second branch 17, the second valve 19 is controlled to be closed, all the outlet water can be effectively utilized by the scheme, water waste is avoided, and the user experience is improved because the water end can directly discharge hot water. The water heating device in the scheme is any one of a gas water heater, an electric water heater, a solar water heater and a heat pump water heater.
As a preferred embodiment, the cold water storage device 12 includes a water storage container 121 and a water suction and discharge control component 122, the water storage container 121 has a closed water storage cavity 123, and the water storage cavity 123 is respectively communicated with the first branch 16 and the second branch 17; the water suction and discharge control assembly 122 is used for controlling the water in the water outlet pipe 15 to be sucked into the water storage cavity 123 or the water in the water storage cavity 123 to be discharged into the water inlet pipe 14. Specifically, when the hot water is detected to be turned on, the water suction and drainage control component 122 sucks the water in the water outlet pipe 15 into the water storage cavity 123; after the cold water in the water outlet pipe 15 is completely transferred to the water storage cavity 123, the water suction and discharge control module 122 discharges the water in the water storage cavity 123 to the water inlet pipe 14.
The water suction and discharge control assembly 122 may be implemented by a water pump, and two water suction and discharge control assemblies may be provided, one water suction and discharge control assembly is used for sucking water in the water outlet pipe 15 into the water storage cavity 123, and the other water discharge and discharge control assembly is used for discharging water in the water storage cavity 123 into the water inlet pipe 14.
The water pump has the base, and the base has certain height, and it can only pump drainage water level height be higher than the water of base, leads to appearing easily that the pump drainage is unclean, and cold water has remaining problem in outlet pipe 15. In order to solve the problem, in the present embodiment, the air tank 1221 and the air pump 1222 are disposed in the water suction and discharge control component 122, the air tank 1221 has a closed tank cavity 1223 therein, the water storage container 121 is disposed in the tank cavity 1223, and the water storage container 121 is made of a material that can elastically deform, for example, rubber or latex material, and the water storage container 121 can be deformed by adjusting the air pressure outside the water storage container 121 to compress the water storage container 121 or expand the water storage container 121, so as to implement the water suction or discharge function; one of the air ports of the air pump 1222 is communicated with the tank cavity 1223, the other air port is communicated with the outside atmosphere, the air pressure in the tank cavity 1223 is adjusted by the air pump 1222, when the air in the tank cavity 1223 is pumped, the air pressure in the tank cavity 1223 is reduced, the elastic water storage container 121 expands because the external pressure of the elastic water storage container 121 is smaller than the internal pressure, and thus the water in the water outlet pipe 15 is sucked into the water storage cavity 123 of the water storage container 121. On the contrary, when the gas is injected into the tank chamber 1223, the gas pressure in the tank chamber 1223 increases, and the elastic water storage container 121 is compressed due to the external pressure thereof being greater than the internal pressure, thereby discharging the water in the water storage container 121 into the water inlet pipe 14. Because air is easier to compress than water, air pressure can be easily changed no matter the air is inflated to pressurize or exhausted to reduce pressure, so that the drainage/water absorption function is realized, and water is drained or absorbed through the change of air pressure, so that the pumping drainage is clean.
Atmospheric pressure can maintain 10 meters's water column approximately, consequently through control pressure differential, can absorb the height within 10 meters with water, and ordinary water heater, its mounted position and water position fall are less than 10 meters far away, need not extract too much gas just can satisfy the demand, to the difference of extraction water yield, select different gas pitcher, water container and air pump, can satisfy the demand of this scheme completely.
In this embodiment, the air pump 1222 inflates or sucks air into the air tank 1221, the air pressure in the air tank 1221 is controlled, the water storage container 121 nested in the air tank 1221 is controlled to drain/absorb water, and the cold water is recovered and reheated in accordance with the open/close states of the first valve 18, the second valve 19 and the control valve 13. The first valve 18 is preferably implemented by a one-way valve that circulates from the cold water storage device 12 to the water inlet pipe 14, which can be used to control the water flow direction of the first branch 16 and avoid on-off control by an electric control device, and has high reliability. Similarly, the second valve 19 is preferably implemented by a one-way valve that communicates from the outlet pipe 15 to the cold water storage device 12.
In order to realize the detection and determination of various control conditions by adopting different control commands under different control conditions for the control valve 13 and the air pump 1222 to control the communication state of the water outlet pipe 15 or the water sucking and discharging state of the cold water storage device 12, it is preferable to provide a first flow rate detecting element 20 in the first branch 16 for detecting the water flow rate of the cold water storage device 12 discharging water into the water inlet pipe 14, determining whether the water in the cold water storage device 12 is completely discharged, and further controlling the operating state of the air pump 1222. Be provided with second flow detection element 21 in inlet tube 14, it is used for detecting into water flow, and when present majority electric water heater goes out water and opens, under the pressure, corresponding inlet tube also has into water to supply, and then judges hot water open mode through detecting into water flow for control valve 113 controls.
In a second embodiment, the present embodiment also provides a method for controlling a water path of a water heating device, where the water path system of the water heating device adopted in the present embodiment is described in the first embodiment and fig. 1, and is not described herein again, and the present embodiment mainly describes a method for controlling a water path of a water heating device, as shown in fig. 2, the method includes the following steps:
a hot water opening action detection step, when the hot water opening is detected, executing the following steps:
a cold water storage step, namely switching off the water heating device to output hot water to the water outlet pipe, and sucking water in the water outlet pipe into the cold water storage device;
and a cold water discharging step, namely starting the water heating device to output hot water to the water outlet pipe, and discharging water in the cold water storage device to the water inlet pipe.
The control valve 13 is used for connecting or disconnecting the water heating device 11 with the water outlet pipe 15, so that in the cold water storage step, the water heating device 11 is disconnected from outputting hot water to the water outlet pipe 15 by closing the control valve 13; when the opening of the hot water is detected, the control valve 13 is immediately closed. When the water valve of the water using terminal is in a closed state, at least one section of the water flow channel between the water valve of the water using terminal and the water outlet is air, therefore, at the moment of opening hot water, the air is firstly exhausted, at the moment, the water flow action can be detected by the detection element, the control valve 13 is immediately closed, and therefore, no water flows out of the water using terminal. In the cold water discharging step, the control valve 13 is opened to start the water heating device 11 to output hot water to the water outlet pipe 15.
And a cold water discharging step of opening the control valve 13 and discharging the water in the cold water storage device 12 to the water inlet pipe 14. According to the scheme, the control valve 13 is closed in time when the opening of hot water is detected, so that the hot water of the water heating device 11 is prevented from entering the water outlet pipe 15 to affect the suction of cold water and the cold water is prevented from being extruded and flowing out from the water using terminal. By providing the cold water storage device 12, cold water is temporarily pumped into the cold water storage device 12, and cold water is prevented from being discharged at the end of use. Because the cold water storage device 12 has a limited water storage capacity, when hot water can be discharged, cold water in the cold water storage device 12 is discharged into the water inlet pipe 14, and enters the water heating device 11 again through the water inlet pipe 14 for heating.
The user has different water conditions, probably does not use hot water for a long time, also may be using, use again after the short-term closure midway, and the deposit of water in the former kind of condition outlet pipe 15 is cold water, and the deposit of water in the latter kind of condition outlet pipe 15 is not yet cooled down, and water pump work still leads to power consumptively, prolongs latency in order to prevent to aspirate water, avoids causing the energy waste, therefore this kind of condition need not to aspirate water again, in this embodiment after detecting hot water opening action, still include:
and judging the current starting state, and executing the cold water storage step only when the current starting state is cold starting. And executing control actions according to conditions by judging which starting state the current device belongs to. The cold start in this embodiment is a case where hot water is not used for a long time, and another case is where hot water is not used for a long time, which may be further subdivided according to actual needs. The setting of the time length of the long-time unused hot water in the embodiment can be set according to the actual situation, can be a fixed value or a variable value, and the ambient temperature directly determines the cooling speed of the water temperature, so the time length can be set according to the ambient temperature.
The starting state judgment method in the embodiment is as follows:
and detecting the water flow in the water inlet pipe, if the water flow in the water inlet pipe is not more than a first set value and the set time T is continued, judging that the current starting state is cold starting, otherwise, judging that the current starting state is not cold starting. When hot water is discharged, automatic water replenishing is performed on the water heating device 11 under the action of water pressure in the conventional water heater, water flow exists in the corresponding water inlet pipe 14, and if the water flow in the water inlet pipe 14 is not detected for the duration set time T, the stored water in the water outlet pipe 15 is considered to be cooled into cold water, and the cold water needs to be pumped and then is heated again. Otherwise, the water in the outlet pipe 15 is considered to be not fully cooled and does not need to be pumped for reheating.
Because the water storage capacity of the cold water storage device 12 is limited, by setting the cold water discharge step, the cold water in the cold water storage device 12 can be discharged into the water inlet pipe 14 when hot water is discharged, and then enters the water heating device 11 again through the water inlet pipe 14 for heating, so that the cold water storage device 12 can recover the water storage capacity without influencing the next use.
Because the cold water discharging step needs to start the power device to work, so as to avoid starting the power device for a long time, causing energy waste and influencing the service life of the power device, after the cold water discharging step, the method further comprises the following steps:
and a cold water discharge detection step of detecting whether water in the cold water storage device is completely discharged or not, and if the water is completely discharged, stopping cold water discharge action, namely closing the power device for discharging the cold water, so that energy waste is avoided, and the service life of the power device is prolonged.
And after stopping the cold water discharging action, entering a normal external hot water supply mode.
The hot water opening action detection mode can directly detect the water flow in the water pipe 15, and is realized by arranging the flow sensor in the water outlet pipe 15, considering that the cold water in the water outlet pipe is sucked by the cold water storage device 12 to influence the water flow state of the water outlet pipe 15, and the water in the water outlet pipe 15 is mostly hot water, which easily influences the service life of an electronic element, in the method, the hot water opening action detection is judged by preferably adopting the mode of detecting the water flow in the water inlet pipe 14, specifically, the detection method in the hot water opening action detection step is as follows:
and detecting the water flow in the water inlet pipe 14, and if the water flow in the water inlet pipe 14 is greater than a second set value, judging that the hot water is started. The detection mode is not influenced by the water flow of the water outlet pipe 15, and the inlet water is cold water, so that the service life of the electronic element is prolonged.
When the water suction and discharge control assembly 122 of the waterway system of the water heating apparatus includes the air tank 1221 and the air pump 1222, the following description will be made in conjunction with the detailed control of the air pump 1222.
In the cold water storage step, in the case of cold start, after the control valve 13 is closed, the air pump 1222 is operated at the maximum allowable power, air in the air tank 1221 is pumped, the water storage tank 121 is expanded, the pressure in the water storage chamber 123 is reduced, water in the water outlet pipe 15 is sucked into the water storage chamber 123 through the second valve 19, and the air pump 1222 is operated for the set time T2 and then stopped. In order to discharge hot water as soon as possible and shorten the waiting time, the cold water suction phase should be ended as soon as possible, so that the air pump 1222 is operated at the maximum power to increase the water suction speed when cold water is sucked.
The length and the caliber of the external pipeline are different, the air tank, the water storage container and the air pump are different, and the time for pumping the cold water in the external pipeline is different, so the time is the settable time T2, and after the water heater is installed, the time is determined according to the actual situation on site, so that the cold water is pumped as much as possible, and the air is pumped little or not.
In the cold water discharging step, after the control valve 13 is opened, the system operates according to the normal heating control flow, and at the same time, the air pump 1222 starts to charge the tank cavity 1223 with a small power, so that the water storage container 121 is contracted, and the water in the water storage cavity 123 is slowly discharged through the first valve 18. In the cold water discharge step, when it is detected that there is no more water flow in the first branch 16, it is considered that the discharge of cold water is completed.
To ensure a stable water flow during the water outlet, the air pump 1222 should be operated at a lower power to reduce the water flow fluctuation at the water outlet when the cold water in the water storage chamber 123 is discharged.
The air pump power can be adjusted in various ways, such as pressure adjustment and frequency conversion. The mode selected is different according to the type of the air pump, and the method for adjusting the power is out of the protection scope of the invention.
The above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that various changes may be made and equivalents may be substituted for elements thereof; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions.
Claims (10)
1. A waterway system for a water heating device, comprising:
the water heating device is respectively connected with the water inlet pipe and the water outlet pipe;
the cold water storage device is connected with the water inlet pipe through a first branch and is connected with the water outlet pipe through a second branch, a first valve for controlling the water flow circulation state is arranged on the first branch, and a second valve for controlling the water flow circulation state is arranged on the second branch;
the control valve is arranged between the water outlet of the water heating device and the water outlet pipe; or the water outlet pipe is arranged on the water outlet pipe and is positioned at the front end of the connecting position of the second branch and the water outlet pipe.
2. The water heating device waterway system of claim 1, wherein the cold water storage device comprises:
the water storage container is provided with a closed water storage cavity, and the water storage cavity is respectively communicated with the first branch and the second branch;
and the water suction and drainage control component is used for controlling the water in the water outlet pipe to be sucked into the water storage cavity or discharging the water in the water storage cavity into the water inlet pipe.
3. The water heating device waterway system of claim 2, wherein the intake and discharge control assembly comprises:
the air tank is internally provided with a closed tank cavity, and the water storage container is arranged in the tank cavity;
the air pump, one of them gas port of air pump with tank chamber intercommunication, another gas port and outside atmosphere intercommunication, the air pump is through adjusting gas pressure in the tank chamber, control water storage container will water in the outlet pipe inhales to in the water storage chamber, perhaps will water in the water storage chamber is discharged to in the inlet tube.
4. A water heating device waterway system according to any one of claims 1-3, wherein a first flow sensing element is provided in the first branch, and/or a second flow sensing element is provided in the inlet pipe.
5. A water heating device waterway system according to any one of claims 1-3, wherein the water heating device is any one of a gas water heater, an electric water heater, a solar water heater, and a heat pump water heater.
6. A water path control method for a water heating device is characterized by comprising the following steps:
a hot water opening action detection step, when the hot water opening is detected, executing the following steps:
a cold water storage step, namely blocking the hot water in the water heating device from being conveyed to the water outlet pipe, and sucking the water in the water outlet pipe into the cold water storage device for storage;
and a cold water discharging step, namely starting the water heating device to output hot water to the water outlet pipe, discharging water in the cold water storage device to the water inlet pipe, and flowing back to the water heating device through the water inlet pipe.
7. The method for controlling the water circuit of a water heating device according to claim 6, after detecting the hot water opening action, further comprising:
and judging the current starting state, and executing the cold water storage step only when the current starting state is cold starting.
8. The water path control method for the water heating device according to claim 7, wherein the starting state judging method comprises the following steps:
and detecting the water flow in the water inlet pipe, if the water flow in the water inlet pipe is not more than a first set value and the set time T is continued, judging that the current starting state is cold starting, otherwise, judging that the current starting state is not cold starting.
9. The water heating device waterway control method of any one of claims 6-8, further comprising, after the cold water discharging step:
and a cold water discharge detection step of detecting whether water in the cold water storage device is completely discharged or not, and stopping cold water discharge after the water is completely discharged.
10. The water path control method for the water heating device according to any one of claims 6-8, wherein the method for detecting the hot water opening is as follows:
and detecting the water flow in the water inlet pipe, and if the water flow in the water inlet pipe is greater than a second set value, judging that the hot water is started.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113932442A (en) * | 2021-10-29 | 2022-01-14 | 慈溪市格仕尼电器有限公司 | Small electric water heater for kitchen |
| CN115013974A (en) * | 2022-06-24 | 2022-09-06 | 珠海格力电器股份有限公司 | Zero-cold-water supply system and control method thereof |
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| CN113932442A (en) * | 2021-10-29 | 2022-01-14 | 慈溪市格仕尼电器有限公司 | Small electric water heater for kitchen |
| CN115013974A (en) * | 2022-06-24 | 2022-09-06 | 珠海格力电器股份有限公司 | Zero-cold-water supply system and control method thereof |
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