CN112629033B - Low-flow protection control method, device, equipment and storage medium for water heater - Google Patents
Low-flow protection control method, device, equipment and storage medium for water heater Download PDFInfo
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- CN112629033B CN112629033B CN201910903602.0A CN201910903602A CN112629033B CN 112629033 B CN112629033 B CN 112629033B CN 201910903602 A CN201910903602 A CN 201910903602A CN 112629033 B CN112629033 B CN 112629033B
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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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Abstract
The embodiment of the application discloses a low-flow protection control method, a low-flow protection control device, low-flow protection control equipment and a storage medium of a water heater. According to the technical scheme, when the unit enters the low-flow protection mode, the compressor is turned off, the warm water valve is opened to the maximum, cold water is supplemented into the water tank, the water in the water tank is cooled, then the target protection logic is determined according to the temperature of the water tank and the direct heating operation time, when the target protection logic is the high water level protection logic, the high water level circulation mode is operated until the water level switch is closed, and when the target protection logic is the low water level protection logic, the low water level circulation mode is operated until the water level switch is closed, the direct heating mode is operated, the problems that when the unit capacity is constant, the temperature difference of inlet and outlet water caused by small flow is increased, and the high pressure is increased are effectively solved, and the efficient normal operation of the unit is guaranteed.
Description
Technical Field
The embodiment of the application relates to the field of water heaters, in particular to a low-flow protection control method, device, equipment and storage medium for a water heater.
Background
With the improvement of living standard of people, the water heater is more and more appeared in the life of consumers because the water heater can conveniently provide hot water. The heat pump water heater adopts the heat pump principle to lift heat energy in the air to high-level heat energy and heat water, and the heat pump water heater has the advantages of energy conservation and environmental protection, and is gradually widely applied.
The general direct heat cycle integrated water heater has three operation modes: high water level circulation mode, low water level circulation mode, one-time heating mode (direct heating mode). The most key of the primary heating is the regulation of water flow, and the stabilization of the water flow is a necessary condition for the normal operation of the primary heating mode. When the unit capacity is constant, the flow undersize can lead to business turn over water difference in temperature to increase, and if this time the unit goes out the water temperature too high, high-pressure increases, can lead to the unit to get into high-pressure protection, influences the normal operating of unit.
Disclosure of Invention
The embodiment of the application provides a low-flow protection control method, a low-flow protection control device and a storage medium for a water heater, and when the outlet water temperature of a unit is too high in a direct heating mode, the unit enters a low-flow protection mode, so that efficient normal operation of the unit is guaranteed.
In a first aspect, an embodiment of the present application provides a low-flow protection control method for a water heater, including:
in response to a low flow protection mode of the unit, closing a compressor, opening a warm water valve to the maximum, and determining target protection logic according to the temperature of a water tank and the direct heating operation time, wherein the target protection logic comprises high water level protection logic and low water level protection logic;
if the target protection logic is determined to be high water level protection logic, operating a high water level circulation mode when a water level switch is closed;
and if the target protection logic is determined to be the low water level protection logic, operating a low water level circulation mode until the temperature of the water tank reaches the target temperature, and operating a direct heating mode.
Further, the determining a target protection logic according to the water tank temperature and the direct heating operation time comprises:
judging whether the unit is in a direct heating mode currently, whether the temperature of the water tank reaches a preset temperature, and whether the direct heating operation time is shorter than the shortest direct heating operation time, wherein the preset temperature is the difference between the target temperature of the water tank and the direct heating mode switching return difference;
if yes, determining that the target protection logic is a high water level protection logic;
if not, determining that the target protection logic is low water level protection logic.
Further, if it is determined that the target protection logic is a high water level protection logic, operating a high water level circulation mode when the water level switch is turned on includes:
if the target protection logic is determined to be the high water level protection logic, judging whether a water level switch is closed or not;
if yes, operating a high water level circulation mode;
if not, determining the target protection logic again according to the water tank temperature and the direct heating operation time.
Further, if it is determined that the target protection logic is a low water level protection logic, operating a low water level circulation mode until the temperature of the water tank reaches the target temperature, and operating a direct heating mode includes:
if the target protection logic is determined to be low water level protection logic, operating a low water level circulation mode;
judging whether the temperature of the water tank reaches a target temperature or not;
if not, continuing to operate the low water level circulation mode;
if yes, judging whether the water level switch is closed or not;
if the water level switch is closed, the unit is stopped at constant temperature;
and if the water level switch is not closed, operating the direct heating mode.
Further, before determining the target protection logic according to the water tank temperature and the direct heating operation time in response to the low flow protection mode of the unit, the method further includes:
judging whether the unit meets the condition of entering a low flow protection mode;
if yes, entering a low flow protection mode.
Further, the determining whether the unit meets the condition of entering the low flow protection mode includes:
judging whether the unit is in a direct heating mode, whether the opening of a warm water valve is maximum, and whether the continuous water outlet temperature of the unit is greater than a protection temperature, wherein the protection temperature is the sum of the set value of the direct heating water outlet temperature and the temperature difference of the direct heating water outlet temperature over-high protection value;
and if so, confirming that the unit meets the condition of entering a low flow protection mode.
In a second aspect, an embodiment of the present application provides a low-flow protection control device for a water heater, including a target protection logic determination module, a high water level protection module, and a low water level protection module, where:
the target protection logic determination module is used for responding to a low flow protection mode of the unit, closing the compressor, opening the warm water valve to the maximum, and determining target protection logic according to the temperature of the water tank and the direct heat running time, wherein the target protection logic comprises high water level protection logic and low water level protection logic;
the high water level protection module is used for operating a high water level circulation mode when a water level switch is closed when the target protection logic is determined to be the high water level protection logic;
and the low water level protection module is used for operating a low water level circulation mode until a water level switch is closed and operating a direct heating mode when the target protection logic is determined to be the low water level protection logic.
Furthermore, the device also comprises a low flow protection confirmation module, which is used for controlling the unit to enter the low flow protection mode when the unit meets the condition of entering the low flow protection mode.
In a third aspect, an embodiment of the present application provides a low-flow protection control device for a water heater, including: a memory and one or more processors; the memory for storing one or more programs; when the one or more programs are executed by the one or more processors, the one or more processors are caused to implement the hot water machine low flow protection control method according to the first aspect.
In a fourth aspect, embodiments of the present application provide a storage medium containing computer-executable instructions for performing the method for low-flow protection control of a water heater according to the first aspect when executed by a computer processor.
When the unit enters the low-flow protection mode, the compressor is closed, the warm water valve is opened to the maximum, cold water is supplemented into the water tank, the water in the water tank is cooled, then the target protection logic is determined according to the temperature of the water tank and the direct-heating operation time, when the target protection logic is the high-water-level protection logic, the high-water-level circulation mode is operated until the water level switch is closed, when the target protection logic is the low-water-level protection logic, the low-water-level circulation mode is operated until the water level switch is closed, the direct-heating mode is operated, the problems that when the unit capacity is constant, the temperature difference of inlet and outlet water caused by undersize flow is increased, the high-pressure is increased are effectively solved, and the efficient normal operation of the unit is ensured.
Drawings
FIG. 1 is a flow chart of a low-flow protection control method for a water heater provided in an embodiment of the present application;
FIG. 2 is a flow chart of another low-flow protection control method for a water heater according to an embodiment of the present disclosure;
FIG. 3 is a schematic structural diagram of a low-flow protection control device of a water heater provided in an embodiment of the present application;
fig. 4 is a schematic structural diagram of a low-flow protection control device of a water heater provided in an embodiment of the present application.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more apparent, specific embodiments of the present application will be described in detail with reference to the accompanying drawings. It is to be understood that the specific embodiments described herein are merely illustrative of the application and are not limiting of the application. It should be further noted that, for the convenience of description, only some but not all of the relevant portions of the present application are shown in the drawings. Before discussing exemplary embodiments in more detail, it should be noted that some exemplary embodiments are described as processes or methods depicted as flowcharts. Although a flowchart may describe the operations (or steps) as a sequential process, many of the operations can be performed in parallel, concurrently or simultaneously. In addition, the order of the operations may be re-arranged. The process may be terminated when its operations are completed, but may have additional steps not included in the figure. The processes may correspond to methods, functions, procedures, subroutines, and the like.
Fig. 1 is a flowchart of a low-flow protection control method for a water heater provided in an embodiment of the present application, where the low-flow protection control method for the water heater provided in the embodiment of the present application may be executed by a low-flow protection control device for the water heater, and the low-flow protection control device for the water heater may be implemented in a hardware and/or software manner and is integrated in a low-flow protection control apparatus for the water heater.
The following description will be given by taking an example of a method for executing the low-flow protection control of the water heater by the low-flow protection control device of the water heater. Referring to fig. 1, the low-flow protection control method of the water heater comprises the following steps:
s101: and in response to a low-flow protection mode of the unit, closing the compressor, opening the warm water valve to the maximum, and determining a target protection logic according to the temperature of the water tank and the direct heating running time.
Specifically, when the condition that the temperature of the water discharged by the unit is too high occurs in the direct heating mode, the unit enters a low-flow protection mode in order to ensure the normal operation of the unit, and generates a stop instruction pointing to the compressor, and the unit closes the compressor in response to the stop instruction and stops heating the water added into the water tank continuously. Meanwhile, a maximum valve opening instruction pointing to the warm water valve is generated, the unit responds to the maximum valve opening instruction to open the warm water valve to the maximum, cold water is supplemented to the water tank, and the interior of the water tank is cooled. The medium temperature water valve is an electric valve, and the opening degree of the medium temperature water valve is controlled by a controller connected to the electric valve.
Furthermore, the warm water valve is connected to a water replenishing pipe of the unit communicated with an external water source and the water tank, and the speed of the external water source replenished to the water tank through the water replenishing pipe can be controlled through the warm water valve. Optionally, the water replenishing pipe is further provided with a water replenishing valve connected in series with the warm water valve, and the water replenishing valve is an electric valve and is controlled to be in an on-off state by a controller connected to the water replenishing valve. And generating a development instruction pointing to the water replenishing valve while generating a maximum valve opening instruction, and opening a water replenishing channel at the water replenishing pipe to replenish water to the water tank by the unit in response to the development instruction.
Further, after the compressor is closed and the warm water valve is opened to the maximum, the high water level protection logic or the low water level protection logic is selected as the target protection logic according to the temperature of the water tank and the direct heating running time in the low flow protection mode, and the temperature of the water tank is controlled. Wherein the target protection logic comprises high water level protection logic and low water level protection logic.
Illustratively, the unit outlet water temperature is the temperature of water output by the unit to a user, the unit outlet water temperature can be obtained through an outlet water temperature sensor arranged at a unit outlet, and the unit outlet water temperature can be correspondingly obtained after analog signals output by the outlet water temperature sensor are converted into digital signals through analog-to-digital conversion. The water tank temperature is the temperature of the water inside the water tank in the unit, the water tank temperature can be obtained through the water tank temperature sensor arranged inside the water tank, and the analog signal output by the water tank temperature sensor can be correspondingly obtained after being converted into a digital signal through an analog-to-digital converter. It is understood that in other embodiments, the water tank temperature may be taken as the unit outlet water temperature. Further, the direct heating running time is understood as the accumulated time length of the unit continuously running in the direct heating mode, the unit accumulates the time length of the running mode when entering a certain running mode (such as the direct heating mode, the high water level circulation mode or the low water level circulation mode), and if the unit enters the direct heating mode, the unit starts to time in response to the starting of the direct heating mode, and the time length is taken as the direct heating running time of the direct heating mode.
Alternatively, the determination of the target protection logic may be determined according to a combination of different ranges of the water tank temperature and the direct-heating operation time, and the selection of the high water level protection logic or the low water level protection logic is determined according to the water tank temperature and the direct-heating operation time in different ranges of the combination. The target protection logic may be determined by a mapping relationship between the target protection logic and the water tank temperature and the direct hot running time, the mapping relationship may be recorded in a logic selection mapping table, and the water tank temperature and the direct hot running time in different ranges correspond to one target protection logic (a high water level protection logic or a low water level protection logic).
S102: and if the target protection logic is determined to be the high water level protection logic, operating a high water level circulation mode when the water level switch is closed.
Specifically, at this time, the compressor is closed, the warm water valve is opened to the maximum, and the opening and closing state of the water level switch is monitored in real time. Wherein water level switch installs in the water tank, detects the water level in the water tank, and when the water level in the water tank reached predetermined high water level state, water level switch was triggered and closed. And after the water level switch is closed, generating a high water level circulation instruction, responding to the high water level circulation instruction by the unit, operating a high water level circulation mode, and exiting the high water level protection logic.
S103: and if the target protection logic is determined to be the low water level protection logic, operating a low water level circulation mode until the temperature of the water tank reaches the target temperature, and operating a direct heating mode.
Specifically, when the low-water-level protection logic is determined to be selected as the target protection logic, a low-water-level circulation instruction is generated, and the unit responds to the low-water-level circulation instruction to operate a low-water-level circulation mode. Meanwhile, the unit monitors the temperature of the water tank in real time in the process of operating the low water level circulation mode, and compares the temperature of the water tank with a target temperature. And after the temperature of the water tank reaches a target temperature (the temperature of the water tank is more than or equal to the target temperature), generating a direct heat instruction, responding to the direct heat instruction by the unit, switching the low water level circulation mode of the unit into a direct heat mode, and exiting the low water level protection logic.
Above-mentioned, when the too high condition of unit play water temperature appears under the direct heating mode, close the compressor to open the warm water valve to the biggest, cool down the water tank, and confirm suitable target protection logic according to water tank temperature and direct heating operating duration, cool down the water tank better. When the high water level protection logic is selected, water is supplied to the water tank until the condition of operating a high water level circulation mode is met, and when the low water level protection logic is selected, the unit is controlled to operate a low water level circulation mode until the temperature of the water tank reaches a target temperature, the unit is controlled to operate a direct heating mode, the temperature of the water tank is effectively controlled, the problems that when the capacity of the unit is constant, the temperature difference of inlet and outlet water is increased and the high pressure is increased due to too small flow are solved, and the efficient normal operation of the unit is ensured.
On the basis of the above embodiments, fig. 2 is a flowchart of another low-flow protection control method for a water heater provided by the embodiment of the present application. The low-flow protection control method of the water heater is an embodiment of the low-flow protection control method of the water heater. Referring to fig. 2, the low-flow protection control method of the water heater comprises the following steps:
s201: and judging whether the unit meets the condition of entering a low flow protection mode. If yes, go to step S202. And if the unit does not meet the condition of entering the low flow protection mode, repeating the step S201.
Illustratively, when judging whether the unit meets the condition of entering the low-flow protection mode, whether the unit meets the condition of entering the low-flow protection mode is determined by judging whether the unit is in the direct heating mode, whether the opening of the temperature control valve is opened to the maximum, and whether the continuous water outlet temperature of the unit is greater than the protection temperature. Wherein the temperature control valve is used for controlling the flow rate of the unit inlet water (water to be heated). Specifically, whether the current unit operates in the direct heating mode is firstly confirmed. Optionally, the unit detects the operating modes (direct heating mode, high water level circulation mode, low water level circulation mode, and shutdown mode) of the unit in real time, and sends the current operating mode to the low-flow protection control device of the water heater.
Further, after the unit is confirmed to operate in the direct heating mode, the opening degree of the temperature control valve is detected, and whether the opening degree of the temperature control valve is maximum or not is judged. The detection of the opening of the temperature control valve can be judged through feedback information of a temperature control valve controller, or the opening position of the temperature control valve is determined through a Hall sensor arranged on the temperature control valve, or the control information of the temperature control valve can be recorded, so that the opening information corresponding to the temperature control valve is stored. And meanwhile, detecting the continuous outlet water temperature of the unit, acquiring the continuous outlet water temperature of the unit through an outlet water temperature sensor arranged at the outlet of the unit, and judging whether the continuous outlet water temperature of the unit is greater than the protection temperature (if the outlet water temperature of the unit for continuous 1 minute is compared with the protection temperature, and if the outlet water temperature is greater than the protection temperature within 1 minute, the continuous outlet water temperature of the unit is judged to be greater than the protection temperature). Wherein the protection temperature is the sum (R08+ B17) of the direct-heating water outlet temperature set value (R08) and the direct-heating water outlet temperature overhigh protection value temperature difference (B17), the value range of the direct-heating water outlet temperature set value R08 is 40-50 ℃, and the value range of the direct-heating water outlet temperature overhigh protection value temperature difference B17 is 0-50 ℃. And when the judging result is that the unit is in a direct heating mode, the opening of the temperature control valve is opened to the maximum degree, and the continuous outlet water temperature of the unit is higher than the protection temperature, the unit is confirmed to meet the condition of entering a low-flow protection mode.
S202: and entering a low flow protection mode.
Specifically, when it is determined that the unit meets the condition of entering the low flow protection mode, a low flow protection instruction is generated, the unit enters the low flow protection mode in response to the low flow protection instruction, and the following low flow protection control logic is executed in the low flow protection mode. It can be understood that the low flow protection mode of the unit and the working mode of the unit are independent modes, and no conflict exists.
S203: the compressor is turned off and the warm water valve is opened to the maximum.
Specifically, when the unit is confirmed to enter the low-flow protection mode, in order to guarantee normal operation of the unit, a stop instruction pointing to the compressor is generated, the unit closes the compressor in response to the stop instruction, and water added into the water tank is stopped from being heated continuously. Meanwhile, a maximum valve opening instruction pointing to the warm water valve is generated, the unit responds to the maximum valve opening instruction to open the warm water valve to the maximum, cold water is supplemented to the water tank, and the interior of the water tank is cooled.
S204: and judging whether the unit meets the operating condition of the high water level protection logic. If so, go to step S205, otherwise, go to step S207.
For example, the specific operation condition for judging whether the unit currently meets the high water level protection logic is as follows: and judging whether the unit is in a direct heating mode currently or not, and whether the temperature of the water tank reaches a preset temperature or not, and whether the direct heating running time is shorter than the shortest direct heating running time or not.
Specifically, after the unit enters the low-flow protection mode, a target protection logic is determined according to the water tank temperature and the direct heating running time in response to the low-flow protection mode of the unit, wherein the target protection logic comprises a high-water level protection logic and a low-water level protection logic. And determining whether the unit is in a direct heating mode currently, acquiring the current water tank temperature and the direct heating running time of the direct heating mode after determining that the unit is in the direct heating mode, and judging whether the water tank temperature reaches a preset temperature and whether the direct heating running time is less than the shortest direct heating running time (H09, the value range of which is 0-10H). The preset temperature is the difference (R02-R07) between the target temperature (R02) of the water tank and the direct heating mode switching back difference (R07), wherein the value range of the target temperature R03 is 0-60 ℃, and the value range of the direct heating mode switching back difference R07 is 0-60 ℃. And if the unit is in the direct heating mode, the temperature of the water tank reaches the preset temperature and the direct heating running time is less than the shortest direct heating running time, determining that the target protection logic is the high water level protection logic, and jumping to the step S204, otherwise, determining that the target protection logic is the low water level protection logic, and jumping to the step S207.
S205: and judging whether the water level switch is closed or not. And if so, jumping to the step S206, otherwise, jumping to the step S204, and determining the target protection logic again according to the water tank temperature and the direct heating running time.
Specifically, at this time, the compressor is closed, the warm water valve is opened to the maximum, the opening and closing state of the water level switch is monitored, the water level in the water tank is detected, and whether the water level switch is closed or not is judged. It can be understood that when the water level switch is triggered and closed, the water level in the water tank reaches a preset high water level state.
S206: and exiting the high water level protection logic and operating a high water level circulation mode.
Specifically, when the water level switch is closed in the process of executing the high water level protection logic, the water level in the water tank reaches a preset high water level state, at this time, the high water level protection logic can be quitted, the low flow protection mode of the unit is ended, and the working mode of the unit is switched to the high water level circulation mode.
S207: a low water level circulation mode is operated.
S208: and judging whether the temperature of the water tank reaches the target temperature. If yes, go to step S209, otherwise, go to step S207, and continue to operate the low water level circulation mode.
Specifically, when the target protection logic is determined to be the low water level protection logic, a low water level circulation instruction is generated, and the unit responds to the low water level circulation instruction to switch the working mode to the low water level circulation mode.
Meanwhile, in the process of operating the low water level circulation mode, the unit monitors the temperature of the water tank in real time through a water tank temperature sensor arranged in the water tank, compares the temperature of the water tank with a target temperature (R02), judges whether the temperature of the water tank reaches the target temperature (the temperature of the water tank is more than or equal to the target temperature), and if not, continues to operate the low water level circulation mode and repeats the judgment process of the low water level circulation mode and the temperature of the water tank until the temperature of the water tank reaches the target temperature.
S209: and judging whether the water level switch is closed or not. If so, go to step S210, otherwise, go to step S211.
S210: and exiting the low water level protection logic to stop the unit at constant temperature.
S211: and exiting the low water level protection logic and operating the direct heating mode.
Specifically, when the temperature of the water tank reaches the target temperature, the working mode of the unit is determined according to the opening and closing conditions of the water level switch. Further, the opening and closing state of the water level switch is obtained, when the water level switch is closed, the water level in the water tank reaches the preset high water level state and is not suitable for adding water into the water tank, at the moment, a stop instruction is generated, the unit responds to the stop instruction to close the compressor and switch the working mode of the unit to the stop mode, and heat preservation is carried out on the water in the water tank.
And when the temperature of the water tank reaches the target temperature, if the water level switch is in an open state, generating a direct heat instruction, responding to the direct heat instruction by the unit, switching the low water level circulation mode of the unit into a direct heat mode, and exiting the low water level protection logic.
For example, taking an example that R02 takes a value of 55 ℃, R07 takes a value of 6 ℃, R08 takes a value of 45 ℃, B17 takes a value of 2 ℃, and H09 takes a value of 1H, it is set that the current unit is in a direct heating mode and continues for 0.5H, at this time, the opening of the temperature control valve is opened to the maximum, and the water tank temperature corresponding to the continuous water outlet temperature of the unit for continuous 1 minute of unit water outlet is 50 ℃, at this time, the water outlet temperature is greater than the protection temperature (water outlet temperature > R08+ B17 is 47 ℃), the unit enters a low flow protection mode, the compressor is controlled to be closed, and the warm water valve is opened to the maximum.
And at the moment, the conditions that the unit is in a direct heating mode, the temperature of the water tank reaches the preset temperature (the temperature of the water tank is more than 50 ℃ and more than R02-R07 is more than 49 ℃) and the direct heating running time is less than the shortest time of the direct heating running (the direct heating running time is more than 0.5H and less than H09 and is 1H) are met, and the target protection logic is determined to be high-water level protection logic.
Then judging whether the water level switch is closed, if so, exiting the high water level protection logic, and operating a high water level circulation mode; otherwise, determining the target protection logic again according to the water tank temperature and the direct heating operation time.
If the unit fails to meet the conditions that the unit is in the direct heating mode, the temperature of the water tank reaches the preset temperature, and the direct heating operation time is less than the shortest time of the direct heating operation, for example, the temperature of the water tank is less than the preset temperature (assuming that the temperature of the water tank is less than 48 ℃ < R02-R07 ═ 49 ℃), or the direct heating operation time of the current unit is greater than the shortest time of the direct heating operation (assuming that the direct heating operation time of the unit is 2H > H09 ═ 1H). And at the moment, if the target protection logic is determined to be the low water level protection logic, the unit is controlled to operate a low water level circulation mode, and the temperature of the water tank is detected in real time until the temperature of the water tank reaches the target temperature. Supposing that the temperature of the water tank of the unit reaches 56 ℃ in the low water level circulation mode, and the temperature of the water tank is higher than the target temperature (the temperature of the water tank is 56 ℃ and higher than R02 and higher than 55 ℃), judging whether the water level switch is closed, if the water level switch is closed, enabling the unit to stop at a constant temperature, and if not, controlling the unit to switch the low water level circulation mode into the running direct heating mode. At the same time, the low water level protection logic is exited regardless of whether the water level switch is closed.
When the unit enters the low-flow protection mode, the compressor is closed, the warm water valve is opened to the maximum, cold water is supplemented into the water tank, the water in the water tank is cooled, then the target protection logic is determined according to the temperature of the water tank and the direct-heating operation time, and when the target protection logic is the high-water-level protection logic, the unit is controlled to operate in the high-water-level circulation mode until the water level switch is closed, and when the target protection logic is the low-water-level protection logic, the low-water-level circulation mode is operated until the temperature of the water tank is reached, the water level switch is closed, and the direct-heating mode is operated.
On the basis of the above embodiments, fig. 3 is a schematic structural diagram of a low-flow protection control device of a water heater provided in an embodiment of the present application. Referring to fig. 3, the low-flow protection control device of the water heater provided by the present embodiment includes a target protection logic determination module 31, a high water level protection module 32, and a low water level protection module 33.
The target protection logic determining module 31 is configured to, in response to a low flow protection mode of the unit, turn off the compressor, open the warm water valve to the maximum, and determine target protection logic according to the temperature of the water tank and the direct heating operation time, where the target protection logic includes high water level protection logic and low water level protection logic; a high water level protection module 32, configured to, when it is determined that the target protection logic is a high water level protection logic, operate a high water level circulation mode when the water level switch is turned on; and the low water level protection module 33 is configured to run a low water level circulation mode until the water level switch is closed and run a direct heating mode when it is determined that the target protection logic is the low water level protection logic.
The water tank is cooled, when the high-water-level protection logic is selected, water is supplemented to the water tank until the conditions for operating the high-water-level circulation mode are met, when the low-water-level protection logic is selected, the unit is controlled to operate the low-water-level circulation mode until the temperature of the water tank reaches the target temperature, the unit is controlled to operate the direct-heating mode, the water tank temperature is effectively controlled, the problems that when the unit capacity is constant, the temperature difference of inlet and outlet water caused by undersize of flow is increased, and high pressure is increased are solved, and efficient normal operation of the unit is guaranteed.
Furthermore, the device also comprises a low flow protection confirmation module, which is used for controlling the unit to enter the low flow protection mode when the unit meets the condition of entering the low flow protection mode.
The embodiment of the application also provides a low-flow protection control device of the water heater, and the low-flow protection control device of the water heater can be integrated with the low-flow protection control device of the water heater provided by the embodiment of the application. Fig. 4 is a schematic structural diagram of a low-flow protection control device of a water heater provided in an embodiment of the present application. Referring to fig. 4, the low flow protection control apparatus of the water heater includes: an input device 43, an output device 44, a memory 42, and one or more processors 41; the memory 42 for storing one or more programs; when the one or more programs are executed by the one or more processors 41, the one or more processors 41 are enabled to implement the method for controlling the low flow protection of the water heater provided in the above embodiment. Wherein the input device 43, the output device 44, the memory 42 and the processor 41 may be connected by a bus or other means, for example, in fig. 4.
The memory 42 is a computer readable storage medium, and can be used for storing software programs, computer executable programs, and modules, such as program instructions/modules corresponding to the low-flow protection control method of the hot water machine according to any embodiment of the present application (for example, the target protection logic determination module 31, the high-water level protection module 32, and the low-water level protection module 33 in the low-flow protection control device of the hot water machine). The memory 42 may mainly include a storage program area and a storage data area, wherein the storage program area may store an operating system, an application program required for at least one function; the storage data area may store data created according to use of the device, and the like. Further, the memory 42 may include high speed random access memory, and may also include non-volatile memory, such as at least one magnetic disk storage device, flash memory device, or other non-volatile solid state storage device. In some examples, memory 42 may further include memory located remotely from processor 41, which may be connected to the device over a network. Examples of such networks include, but are not limited to, the internet, intranets, local area networks, mobile communication networks, and combinations thereof.
The input device 43 may be used to receive input numeric or character information and to generate key signal inputs relating to user settings and function controls of the apparatus. The output device 44 may include a display device such as a display screen.
The processor 41 executes various functional applications and data processing of the device by executing software programs, instructions and modules stored in the memory 42, namely, the above-mentioned low-flow protection control method of the water heater is realized.
The water heater low-flow protection control device and the computer equipment provided by the embodiment can be used for executing the water heater low-flow protection control method provided by the embodiment, and have corresponding functions and beneficial effects.
Embodiments of the present application further provide a storage medium containing computer-executable instructions, which when executed by a computer processor, are configured to perform the method for controlling low-flow protection of a hot water machine provided in the above embodiments, the method for controlling low-flow protection of a hot water machine includes: in response to a low flow protection mode of the unit, closing a compressor, opening a warm water valve to the maximum, and determining target protection logic according to the temperature of a water tank and the direct heat running time, wherein the target protection logic comprises high water level protection logic and low water level protection logic; if the target protection logic is determined to be high water level protection logic, operating a high water level circulation mode when a water level switch is closed; and if the target protection logic is determined to be the low water level protection logic, operating a low water level circulation mode until the temperature of the water tank reaches the target temperature, and operating a direct heating mode.
Storage medium-any of various types of memory devices or storage devices. The term "storage medium" is intended to include: mounting media such as CD-ROM, floppy disk, or tape devices; computer system memory or random access memory such as DRAM, DDR RAM, SRAM, EDO RAM, Lanbas (Rambus) RAM, etc.; non-volatile memory such as flash memory, magnetic media (e.g., hard disk or optical storage); registers or other similar types of memory elements, etc. The storage medium may also include other types of memory or combinations thereof. In addition, the storage medium may be located in a first computer system in which the program is executed, or may be located in a different second computer system connected to the first computer system through a network (such as the internet). The second computer system may provide program instructions to the first computer for execution. The term "storage medium" may include two or more storage media that may reside in different locations, such as in different computer systems that are connected by a network. The storage medium may store program instructions (e.g., embodied as a computer program) that are executable by one or more processors.
Of course, the storage medium provided in the embodiments of the present application contains computer-executable instructions, and the computer-executable instructions are not limited to the method for controlling low-flow protection of a hot water machine described above, and may also perform related operations in the method for controlling low-flow protection of a hot water machine provided in any embodiment of the present application.
The hot water machine low flow protection control device, the hot water machine low flow protection control apparatus, and the storage medium provided in the foregoing embodiments may execute the hot water machine low flow protection control method provided in any embodiment of the present application, and refer to the hot water machine low flow protection control method provided in any embodiment of the present application without detailed technical details described in the foregoing embodiments.
The foregoing is considered as illustrative of the preferred embodiments of the invention and the technical principles employed. The present application is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present application has been described in more detail with reference to the above embodiments, the present application is not limited to the above embodiments, and may include other equivalent embodiments without departing from the spirit of the present application, and the scope of the present application is determined by the scope of the claims.
Claims (9)
1. The low-flow protection control method of the water heater is characterized by comprising the following steps:
in response to a low flow protection mode of the unit, closing a compressor, opening a warm water valve to the maximum, and determining target protection logic according to the temperature of a water tank and the direct heat running time, wherein the target protection logic comprises high water level protection logic and low water level protection logic;
if the target protection logic is determined to be high water level protection logic, operating a high water level circulation mode when a water level switch is closed;
if the target protection logic is determined to be the low water level protection logic, operating a low water level circulation mode until the temperature of the water tank reaches the target temperature, and operating a direct heating mode;
the determining of the target protection logic according to the water tank temperature and the direct heating operation time comprises the following steps:
judging whether the unit is currently in a direct heating mode, whether the temperature of the water tank reaches a preset temperature, and whether the direct heating operation time is less than the shortest direct heating operation time, wherein the preset temperature is the difference between the target temperature of the water tank and the return difference of the direct heating mode;
if yes, determining that the target protection logic is a high water level protection logic;
if not, determining that the target protection logic is low water level protection logic.
2. The method as claimed in claim 1, wherein if the target protection logic is determined to be a high water level protection logic, operating the high water level circulation mode when the water level switch is closed comprises:
if the target protection logic is determined to be the high water level protection logic, judging whether a water level switch is closed or not;
if yes, operating a high water level circulation mode;
if not, determining the target protection logic again according to the water tank temperature and the direct heating operation time.
3. The method for controlling low flow protection of a water heater according to claim 1, wherein if it is determined that the target protection logic is a low water level protection logic, operating a low water level circulation mode until the temperature of the water tank reaches a target temperature, and operating a direct heating mode comprises:
if the target protection logic is determined to be low water level protection logic, operating a low water level circulation mode;
judging whether the temperature of the water tank reaches a target temperature or not;
if not, continuing to operate the low water level circulation mode;
if yes, judging whether the water level switch is closed or not;
if the water level switch is closed, the unit is stopped at constant temperature;
and if the water level switch is not closed, operating the direct heating mode.
4. The low-flow protection control method of the water heater according to claim 1, wherein before determining the target protection logic according to the water tank temperature and the direct heating operation time in response to the low-flow protection mode of the unit, the method further comprises:
judging whether the unit meets the condition of entering a low-flow protection mode;
and if so, entering a low-flow protection mode.
5. The low flow protection control method of claim 4, wherein the determining whether the unit meets the condition for entering the low flow protection mode comprises:
judging whether the unit is in a direct heating mode, whether the opening of a warm water valve is maximum, and whether the continuous water outlet temperature of the unit is greater than a protection temperature, wherein the protection temperature is the sum of the set value of the direct heating water outlet temperature and the temperature difference of the direct heating water outlet temperature over-high protection value;
and if so, confirming that the unit meets the condition of entering a low flow protection mode.
6. The low-flow protection control device of the water heater is characterized by comprising a target protection logic determination module, a high water level protection module and a low water level protection module, wherein:
the target protection logic determination module is used for responding to a low-flow protection mode of the unit, closing the compressor, opening the warm water valve to the maximum and determining target protection logic according to the temperature of the water tank and the direct-heating operation time, wherein the target protection logic comprises the steps of judging whether the unit is in the direct-heating mode currently, judging whether the temperature of the water tank reaches a preset temperature or not, and judging whether the direct-heating operation time is less than the shortest direct-heating operation time or not, the preset temperature is the difference between the target temperature of the water tank and the return difference of the direct-heating mode, if so, determining that the target protection logic is high-water level protection logic, and if not, determining that the target protection logic is low-water level protection logic, and the target protection logic comprises high-water level protection logic and low-water level protection logic;
the high water level protection module is used for operating a high water level circulation mode when a water level switch is closed when the target protection logic is determined to be the high water level protection logic;
and the low water level protection module is used for operating a low water level circulation mode until the water level switch is closed and operating a direct heating mode when the target protection logic is determined to be the low water level protection logic.
7. The low-flow protection control device of claim 6, further comprising a low-flow protection confirming module for controlling the unit to enter the low-flow protection mode when the unit meets the condition of entering the low-flow protection mode.
8. The hot water machine low flow protection controlgear, its characterized in that includes: a memory and one or more processors;
the memory for storing one or more programs;
when executed by the one or more processors, cause the one or more processors to implement the water heater low flow protection control method of any one of claims 1-5.
9. A storage medium containing computer executable instructions for performing the hot water machine low flow protection control method of any one of claims 1-5 when executed by a computer processor.
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