CN114811957B - Control method and control device of water heater - Google Patents
Control method and control device of water heater Download PDFInfo
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- CN114811957B CN114811957B CN202110129037.4A CN202110129037A CN114811957B CN 114811957 B CN114811957 B CN 114811957B CN 202110129037 A CN202110129037 A CN 202110129037A CN 114811957 B CN114811957 B CN 114811957B
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 204
- 238000000034 method Methods 0.000 title claims abstract description 46
- 238000010257 thawing Methods 0.000 claims abstract description 50
- 230000007613 environmental effect Effects 0.000 claims description 31
- 230000015654 memory Effects 0.000 claims description 29
- 238000004891 communication Methods 0.000 claims description 12
- 238000004590 computer program Methods 0.000 claims description 6
- 239000003570 air Substances 0.000 description 34
- 238000010586 diagram Methods 0.000 description 6
- 230000006870 function Effects 0.000 description 6
- 230000008569 process Effects 0.000 description 6
- 239000003507 refrigerant Substances 0.000 description 6
- 238000010438 heat treatment Methods 0.000 description 5
- 230000001360 synchronised effect Effects 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 3
- 230000008878 coupling Effects 0.000 description 3
- 238000010168 coupling process Methods 0.000 description 3
- 238000005859 coupling reaction Methods 0.000 description 3
- 239000012080 ambient air Substances 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000004134 energy conservation Methods 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- 239000004065 semiconductor Substances 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 238000013500 data storage Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000008236 heating water Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 230000008719 thickening Effects 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H9/00—Details
- F24H9/20—Arrangement or mounting of control or safety devices
- F24H9/2007—Arrangement or mounting of control or safety devices for water heaters
- F24H9/2014—Arrangement or mounting of control or safety devices for water heaters using electrical energy supply
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B49/00—Arrangement or mounting of control or safety devices
- F25B49/02—Arrangement or mounting of control or safety devices for compression type machines, plants or systems
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Heat-Pump Type And Storage Water Heaters (AREA)
Abstract
The application provides a control method and a control device of a water heater. In the technical scheme of the application, through gathering the ambient temperature numerical value before the water heater gets into the defrosting mode and the temperature numerical value after the water heater exits the defrosting mode, look up table obtains a target frequency, then the compressor of control water heater is operated under this target frequency in the target duration after the defrosting mode of exiting, the deviation and the fluctuation that can avoid the ambient temperature sensor to receive defrosting steam to influence numerical value and the actual temperature value that gather when the water heater exits the defrosting mode like this to avoid deviation and the fluctuation of water heater target frequency, realize safe, stable, the high-efficient operation of water heater.
Description
Technical Field
The application relates to the field of water heater control, in particular to a control method and a control device of an air source heat pump water heater.
Background
At present, the main implementation mode of energy conservation of the air source heat pump water heater is frequency conversion, namely: and determining a target frequency according to the ambient temperature acquired by the ambient temperature sensor and the water temperature acquired by the water temperature sensor, and operating according to the target frequency. Compared with the rated heat pump water heater, the variable-frequency air source heat pump water heater has the advantages of large heating capacity, high energy efficiency and the like, and has more obvious advantages particularly in a low-temperature environment.
In the prior art, a variable-frequency air source heat pump water heater operates according to fixed frequency in a low-temperature defrosting stage, and after defrosting is finished, the current ambient temperature and the water temperature in a water tank are collected again to determine the operating frequency.
However, with the increase of energy conservation and emission reduction demands, the field of water heaters has put forward requirements on higher energy efficiency for various products. The air source heat pump water heater is widely applied to life, production and other aspects as a hot water product, and the high-efficiency and energy-saving requirements are increasingly higher.
Disclosure of Invention
Aiming at the technical problems that the air source heat pump water heater is affected by hot gas generated by defrosting in the low-temperature defrosting operation process, the temperature value acquired by the ambient temperature sensor of the variable-frequency air source heat pump water heater is not matched with the actual temperature value, and the variable-frequency air source heat pump water heater cannot safely, stably and efficiently operate due to the fact that the ambient temperature sensor acquires the fluctuation temperature value, the embodiment of the application provides a control method and a control device of the air source heat pump water heater.
In a first aspect, the present application provides a control method of a water heater, the method including: acquiring the ambient temperature of the water heater before entering a target operation mode, and obtaining a first ambient temperature value, wherein the target operation mode comprises a defrosting mode; collecting the temperature of a water tank after the water heater exits the target operation mode, and obtaining a first water temperature value; determining a first target frequency according to the first ambient temperature value and the first water temperature value; and controlling the compressor of the water heater to operate at a first target frequency within a target duration after the water heater exits the target operation mode.
In the method, in the appointed time after the defrosting of the water heater is finished, the water heater determines the target frequency of the water heater according to the recorded environmental temperature value before the defrosting and the current water temperature value, and the water heater operates according to the target frequency, so that the influence of hot air generated by defrosting operation on the environmental temperature just after the defrosting is finished can be avoided, the change of the operating frequency is further influenced, and the stable and efficient operation of the water heater is facilitated.
With reference to the first aspect, in a first possible implementation manner, the method further includes: after the target duration, collecting the ambient temperature of the water heater to obtain a second ambient temperature value; after the target duration, collecting the temperature of a water tank of the water heater to obtain a second water temperature value; determining a second target frequency according to the second ambient temperature value and the second water temperature value; and controlling the compressor of the water heater to operate at the second target frequency.
In the implementation mode, after the water heater operates for a target time according to the first target frequency, the value of the ambient temperature is re-measured, a new target frequency is obtained according to the actually detected ambient temperature and the water temperature of the water heater in a table lookup mode, and the water heater operates according to the new target frequency, so that the water heater can operate efficiently.
With reference to the first aspect or the first possible implementation manner, in a second possible implementation manner, the target duration is a preset duration in the water heater.
In a second aspect, the present application provides a control device for a water heater, the device comprising: the acquisition module acquires the ambient temperature before the water heater enters a target operation mode to obtain a first ambient temperature value, wherein the target operation mode comprises a defrosting mode; the acquisition module is also used for acquiring the temperature of the water tank after the water heater exits the target operation mode to obtain a first water temperature value; the determining module is used for determining a first target frequency according to the first environment temperature value and the first water temperature value; and the control module is used for controlling the compressor of the water heater to operate at a first target frequency within a target duration after the water heater exits from the target operation mode.
With reference to the second aspect, in a first possible implementation manner, the method includes: the acquisition module is also used for acquiring the environmental temperature of the water heater after the target duration to obtain a second environmental temperature value; the acquisition module is also used for acquiring the water tank temperature of the water heater after the target duration to obtain a second water temperature value; the determining module is further configured to determine a second target frequency according to the second ambient temperature value and the second water temperature value; the control module is also configured to control a compressor of the water heater to operate at the second target frequency.
With reference to the second aspect or the first possible implementation manner, in a second possible implementation manner, the target duration is a preset duration in the water heater.
In a third aspect, the present application provides a control device for a water heater, including: a plurality of memories and a plurality of processors; the memory is used for storing program instructions; the processor is configured to invoke program instructions in the memory to perform the method according to the first aspect or any of the possible implementations thereof.
Where the system is a computing device, in some implementations the system may also include a transceiver or communication interface for communicating with other devices.
Where the system is a chip for a computing device, in some implementations the system may also include a communication interface for communicating with other means in the computing device, for example for communicating with a transceiver of the computing device.
In a fourth aspect, the present application provides a computer readable medium storing program code for computer execution, the program code comprising instructions for performing the method of the first aspect or any one of the possible implementations thereof.
In a fifth aspect, the present application provides a computer program product comprising instructions which, when run on a processor, cause the processor to implement the method of the first aspect or any one of the implementations.
In a sixth aspect, the present application provides a water heater comprising the control device of the second aspect, the third aspect or any one of the implementation manners.
Drawings
FIG. 1 is a system schematic diagram of a variable frequency air source heat pump water heater according to one embodiment of the present application;
FIG. 2 is a schematic flow chart of a control method of a variable frequency air source heat pump water heater according to one embodiment of the present application;
FIG. 3 is a schematic diagram of a control device of a variable frequency air source heat pump water heater according to one embodiment of the present application;
fig. 4 is a schematic structural diagram of a control device of a variable frequency air source heat pump water heater according to an embodiment of the present application.
Detailed Description
The implementation of the examples of the present application will be described in detail below with reference to the accompanying drawings.
Fig. 1 is a system schematic diagram of a variable frequency air source heat pump water heater according to one embodiment of the present application.
As shown in fig. 1, the air source heat pump water heater system mainly includes a four-way valve 101, a condenser 102, a water storage tank 103, a water tank temperature sensor 104, a controller 105, an ambient temperature sensor 106, an evaporator 107, and a compressor 108.
The air source heat pump water heater is internally provided with a heat absorbing medium refrigerant, and in a liquefied state, when the temperature is lower than minus 20 ℃, the temperature difference exists between the heat absorbing medium and the outside temperature, so that the refrigerant can absorb the outside heat energy, the outside heat energy is vaporized in the evaporator 107, the temperature of the refrigerant is increased through the operation of the compressor 108 in the air source heat pump water heater, the refrigerant is converted into the liquefied state from the vaporized state through the condenser 102, a large amount of heat is released in the conversion process, the heat is transferred to the reserved water in the water storage tank 103, the water temperature is increased, and the purpose of heating water is achieved.
In general, when the air source heat pump water heater is used in winter, if the air source heat pump water heater is placed outdoors, when the outdoor temperature in winter is lower than 0 ℃, the heating operation time is long, the whole heat exchanger surface of the outdoor unit can be uniformly frosted, because when the temperature of the heat exchanger is lower than the dew point temperature of ambient air, dew can be generated on the surface of a radiating fin on the whole heat exchanger, when the temperature of the ambient air is lower than 0 ℃, the dew can be condensed into thin frost, after the surface of the radiating fin is frosted, the resistance of air circulation is increased along with the thickening of a frost layer, the circulation of air is blocked, the evaporator 107 absorbs heat through the air, the air flow is reduced, the heat absorption capacity is also reduced, the performance of the unit is reduced, and the heating effect and the operation of the water heater are affected. Therefore, the water heater is operated to a certain extent, that is, when the defrosting condition is reached, it is necessary to perform the defrosting operation.
Two exemplary implementations of detecting whether a water heater has reached a defrost condition are as follows: one is to install a temperature sensor on the coil of the outdoor evaporator 107, and judge whether frosting occurs by detecting the temperature of the outdoor coil; the other is to determine whether the outdoor evaporator 107 frosts by detecting the difference between the coil temperature of the condenser 102 and the ambient temperature (or water temperature), that is, when the outdoor evaporator 107 frosts, the heat exchange efficiency is reduced, the heat exchange capacity of the condenser is reduced, the coil temperature is reduced, and when the difference between the coil temperature of the condenser 102 and the ambient temperature (or water temperature) is detected to be lower than a certain value, it can be determined that the outdoor evaporator frosts seriously, and the defrosting operation needs to be performed.
As one example, the water heater defrost may employ a hot gas defrost method, for example, a reverse cycle defrost method and a hot gas bypass defrost method may be employed.
In the reverse circulation defrosting method, when the water heater detects that defrosting operation needs to be executed, a reversing defrosting program is started, a reversing valve of the four-way valve 101 acts to change the flow direction of a refrigerant, a unit is changed from a heating operation state to a refrigerating operation state, high-temperature gas discharged by a compressor is switched into an outdoor heat exchanger through the four-way valve 101 to defrost, and when the temperature of an outdoor coil rises to a certain temperature value, defrosting is finished.
In the hot gas bypass defrosting method, the flow direction of the refrigerant is not changed during defrosting, the heating working state of the unit is kept unchanged during defrosting, and high-temperature gas exhausted by the compressor directly bypasses a part of the high-temperature gas to the outdoor heat exchanger for defrosting. Such defrosting methods produce a large amount of hot air into the air when defrosted.
The existing air source heat pump water heater has the main implementation mode of high energy efficiency of frequency conversion, namely, an ambient temperature value outside the water heater is collected through an ambient temperature sensor 106, a water temperature value in a water tank is collected through a water tank temperature sensor 104, a target frequency is obtained by looking up a table according to the collected ambient temperature value and water Wen Shuzhi, and a controller 105 controls a compressor 108 to perform according to the target frequency.
However, after the low-temperature defrosting operation is finished, the environmental temperature value collected by the environmental temperature sensor 106 of the variable-frequency air source heat pump water heater is usually not matched with the actual environmental temperature value, and the temperature value collected by the environmental temperature sensor 106 is fluctuating, in this case, the operating frequency is controlled only by the environmental temperature value collected by the environmental temperature sensor 106 outside the water heater and the water temperature value collected by the water tank temperature sensor 104 inside the water tank, so that the phenomenon that the actual frequency is not matched with the design frequency and fluctuates easily occurs, which is unfavorable for the safe, stable and efficient operation of the variable-frequency air source heat pump water heater.
Aiming at the problems, the application provides a new technical scheme. According to the technical scheme, after defrosting of the water heater is finished, the target frequency of operation of the compressor is not determined according to the current environment temperature and the water tank temperature, but is determined according to the environment temperature before the water heater enters the defrosting mode and the current water tank temperature of the water heater, and the compressor is controlled to operate according to the target frequency.
Fig. 2 is a schematic flow chart of a control method of a variable frequency air source heat pump water heater according to an embodiment of the present application. As shown in fig. 2, the method may include S201, S202, S203, and S204.
S201, acquiring the ambient temperature of the water heater before entering a target operation mode, and obtaining a first ambient temperature value, wherein the target operation mode comprises a defrosting mode.
Taking the water heater shown in fig. 1 as an example, the controller 105 records the ambient temperature of the ambient temperature sensor 106 before the water heater enters the defrost mode.
Or when the controller detects that the water heater meets the defrosting condition, the environmental temperature value acquired by the environmental temperature sensor of the water heater is locked.
In this embodiment, the value of the ambient temperature acquired by the ambient temperature sensor of the water heater before the defrosting mode of the water heater is referred to as a first ambient temperature value.
S202, collecting the temperature of a water tank after the water heater exits from the target running mode, and obtaining a first water temperature value.
For example, after the water heater exits the defrost mode, the controller 105 records the water tank temperature of the water heater as captured by the water tank temperature sensor 104.
Alternatively, it can be said that when the controller determines that the water heater satisfies the defrost exit condition, the water tank temperature collected by the water tank temperature sensor 104 of the water heater is recorded.
In this embodiment, the water Wen Shuzhi currently collected by the water tank temperature sensor of the water heater is recorded as the first water temperature value.
S203, determining a first target frequency according to the first environment temperature value and the first water temperature value.
For example, the first target frequency is obtained according to a first environmental temperature value and a first water temperature value recorded by the controller in a table, and this step can refer to the prior art.
As an example, a table of air source heat pump water heater frequency adjustments is shown in table 1 below.
TABLE 1
In table 1, te represents an environmental temperature value, T represents a water tank temperature value, te1, te2, T1 and T2 set temperature thresholds, and a1 to a9 are operation frequencies of the compressor of the water heater corresponding to the water tank temperature value and the environmental temperature value.
As can be seen from table 1, the operating frequency trend of the compressor is: at the same ambient temperature, as the water temperature increases, the target frequency a increases, e.g., a3> a2> a1; at the same water temperature, as the ambient temperature increases, the target frequency a decreases, e.g., a1> a4> a7.
S204, controlling the compressor of the water heater to operate at a first target frequency within a target duration after the water heater exits the target operation mode.
For example, the controller 105 controls the compressor 108 to operate at a first target frequency for a target period of time after the water heater exits defrost mode.
In this embodiment, in a target period after defrosting of the water heater, the water heater determines a target frequency of the water heater according to the recorded environmental temperature value before defrosting and the current water temperature value, and the water heater operates according to the target frequency, so that the environmental temperature sensor is prevented from being influenced by residual hot gas after defrosting, and deviation and fluctuation of the acquired environmental temperature value and an actual value are avoided, thereby avoiding deviation and fluctuation of the target frequency of the water heater. In addition, when defrosting just ends, compared with the temperature acquired in real time by utilizing the environmental temperature recorded before defrosting, the environmental temperature recorded before defrosting is closer to the real environmental temperature, the data is more accurate, and the safe, stable and efficient operation of the variable-frequency air source heat pump water heater can be realized.
In some implementations of this embodiment, the target operating mode may further include an oil return mode or other modes that affect environmental temperature fluctuations.
In some implementations of this embodiment, the water heater is operated in a target mode of operation, such as in a defrost mode or a non-heated water return mode of operation, the compressor of the water heater may be operated at a fixed frequency, i.e., the frequency of operation of the compressor may not vary with ambient temperature and water temperature. Alternatively, the fixed frequency may be a preset frequency in the water heater.
In some implementations of this embodiment, after the water heater is operated for the target period of time, the current ambient temperature of the water heater may be collected by the ambient temperature sensor to obtain a second ambient temperature value, the current water temperature of the water heater may be collected by the water tank temperature sensor to obtain a second water temperature value, and then a second target frequency may be determined by looking up a table according to the second ambient temperature value and the second temperature value, and then the water heater may be controlled to operate at the second target frequency.
Or, after the compressor of the water heater operates for the target time period t according to the first target frequency, the controller may unlock the recorded first environmental temperature value, i.e. may not determine the first target frequency according to the first environmental temperature value and the first water tank temperature value acquired in real time, but may look up a table according to the actually detected second environmental temperature value and the second water tank temperature value to obtain the second target frequency, and control the compressor to operate according to the second target frequency.
In this embodiment, after the water heater operates for a target period according to the first target frequency, the value of the ambient temperature is re-measured, and a new target frequency is obtained according to the actually detected ambient temperature and the water temperature table of the water heater, and the water heater operates according to the new target frequency, so that the efficient operation of the water heater is facilitated.
In some implementations of this embodiment, the target duration may be a duration preset in the controller. It will be appreciated that the target time period may also be a time period determined according to other manners, and as an example, the target time period may be determined according to an ambient temperature after defrosting and an ambient temperature before defrosting, for example, the greater the difference between the ambient temperature after defrosting and the ambient temperature before defrosting, the longer the target time period.
Fig. 3 is a schematic diagram of a control device of a variable frequency air source heat pump water heater according to an embodiment of the present application. The apparatus shown in fig. 3 may be used to perform the method described in any of the previous embodiments. As shown in fig. 3, the apparatus 300 of the present embodiment may include: the device comprises an acquisition module 301, a determination module 302 and a control module 303.
In one example, the apparatus 300 may be used to perform the method described in fig. 2. For example, the acquisition module 301 may be used to perform S201 and S202, the determination module 302 may be used to perform S203, and the control module 303 may be used to perform S204.
Fig. 4 is a schematic structural diagram of a control device of a variable frequency air source heat pump water heater according to an embodiment of the present application. The apparatus shown in fig. 4 may be used to perform the method described in any of the previous embodiments.
As shown in fig. 4, the apparatus 400 of the present embodiment includes: memory 401, processor 402, communication interface 403, and bus 404. The memory 401, the processor 402, and the communication interface 403 are connected to each other by a bus 404.
The memory 401 may be a Read Only Memory (ROM), a static storage device, a dynamic storage device, or a random access memory (random access memory, RAM). The memory 401 may store a program, and the processor 402 is configured to perform the steps of the method shown in fig. 2 when the program stored in the memory 401 is executed by the processor 402.
The processor 402 may employ a general-purpose central processing unit (central processing unit, CPU), microprocessor, application specific integrated circuit (application specific integrated circuit, ASIC), or one or more integrated circuits for executing associated programs to perform the methods of the various embodiments of the present application.
The processor 402 may also be an integrated circuit chip with signal processing capabilities. In implementation, various steps of methods of various embodiments of the present application may be performed by integrated logic circuitry in hardware or by instructions in software in processor 402.
The processor 402 may also be a general purpose processor, a digital signal processor (digital signal processing, DSP), an Application Specific Integrated Circuit (ASIC), an off-the-shelf programmable gate array (field programmable gate array, FPGA) or other programmable logic device, discrete gate or transistor logic device, discrete hardware components. The disclosed methods, steps, and logic blocks in the embodiments of the present application may be implemented or performed. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like.
The steps of a method disclosed in connection with the embodiments of the present application may be embodied directly in hardware, in a decoded processor, or in a combination of hardware and software modules in a decoded processor. The software modules may be located in a random access memory, flash memory, read only memory, programmable read only memory, or electrically erasable programmable memory, registers, etc. as well known in the art. The storage medium is located in the memory 401, and the processor 402 reads the information in the memory 401, and in combination with its hardware, performs the functions necessary for the unit comprised by the apparatus of the present application, for example, the steps/functions of the embodiment shown in fig. 2 can be performed.
Communication interface 403 may enable communication between apparatus 400 and other devices or communication networks using, but is not limited to, a transceiver-like transceiver.
Bus 404 may include a path for transferring information between various components of device 400 (e.g., memory 401, processor 402, communication interface 403).
It should be understood that the apparatus 400 shown in the embodiments of the present application may be a computing device, or may be a chip configured in a computing device.
It should also be appreciated that the memory in embodiments of the present application may be either volatile memory or nonvolatile memory, or may include both volatile and nonvolatile memory. The nonvolatile memory may be a read-only memory (ROM), a Programmable ROM (PROM), an Erasable PROM (EPROM), an electrically Erasable EPROM (EEPROM), or a flash memory. The volatile memory may be random access memory (random access memory, RAM) which acts as an external cache. By way of example but not limitation, many forms of random access memory (random access memory, RAM) are available, such as Static RAM (SRAM), dynamic Random Access Memory (DRAM), synchronous Dynamic Random Access Memory (SDRAM), double data rate synchronous dynamic random access memory (DDR SDRAM), enhanced Synchronous Dynamic Random Access Memory (ESDRAM), synchronous Link DRAM (SLDRAM), and direct memory bus RAM (DR RAM).
The above embodiments may be implemented in whole or in part by software, hardware, firmware, or any other combination. When implemented in software, the above-described embodiments may be implemented in whole or in part in the form of a computer program product. The computer program product comprises one or more computer instructions or computer programs. When the computer instructions or computer program are loaded or executed on a computer, the processes or functions described in accordance with the embodiments of the present application are all or partially produced. The computer may be a general purpose computer, a special purpose computer, a computer network, or other programmable apparatus. The computer instructions may be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another computer-readable storage medium, for example, the computer instructions may be transmitted from one website site, computer, server, or data center to another website site, computer, server, or data center by wired (e.g., infrared, wireless, microwave, etc.). The computer readable storage medium may be any available medium that can be accessed by a computer or a data storage device such as a server, data center, etc. that contains one or more sets of available media. The usable medium may be a magnetic medium (e.g., floppy disk, hard disk, magnetic tape), an optical medium (e.g., DVD), or a semiconductor medium. The semiconductor medium may be a solid state disk.
It should be understood that the term "and/or" is merely an association relationship describing the associated object, and means that three relationships may exist, for example, a and/or B may mean: there are three cases, a alone, a and B together, and B alone, wherein a, B may be singular or plural. In addition, the character "/" herein generally indicates that the associated object is an "or" relationship, but may also indicate an "and/or" relationship, and may be understood by referring to the context.
In the present application, "at least one" means one or more, and "a plurality" means two or more. "at least one of" or the like means any combination of these items, including any combination of single item(s) or plural items(s). For example, at least one (one) of a, b, or c may represent: a, b, c, a-b, a-c, b-c, or a-b-c, wherein a, b, c may be single or plural.
It should be understood that, in various embodiments of the present application, the sequence numbers of the foregoing processes do not mean the order of execution, and the order of execution of the processes should be determined by the functions and internal logic thereof, and should not constitute any limitation on the implementation process of the embodiments of the present application.
Those of ordinary skill in the art will appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware, or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the solution. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present application.
It will be clear to those skilled in the art that, for convenience and brevity of description, specific working procedures of the above-described systems, apparatuses and units may refer to corresponding procedures in the foregoing method embodiments, and are not repeated herein.
In the several embodiments provided in this application, it should be understood that the disclosed systems, devices, and methods may be implemented in other manners. For example, the apparatus embodiments described above are merely illustrative, e.g., the division of the units is merely a logical function division, and there may be additional divisions when actually implemented, e.g., multiple units or components may be combined or integrated into another system, or some features may be omitted or not performed. Alternatively, the coupling or direct coupling or communication connection shown or discussed with each other may be an indirect coupling or communication connection via some interfaces, devices or units, which may be in electrical, mechanical or other form.
The units described as separate units may or may not be physically separate, and units shown as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.
In addition, each functional unit in each embodiment of the present application may be integrated in one processing unit, or each unit may exist alone physically, or two or more units may be integrated in one unit.
The functions, if implemented in the form of software functional units and sold or used as a stand-alone product, may be stored in a computer-readable storage medium. Based on such understanding, the technical solution of the present application may be embodied essentially or in a part contributing to the prior art or in a part of the technical solution, in the form of a software product stored in a storage medium, including several instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the methods described in the embodiments of the present application. And the aforementioned storage medium includes: various media capable of storing program codes, such as a U disk, a mobile hard disk, a read-only memory, a random access memory, a magnetic disk or an optical disk.
The foregoing is merely specific embodiments of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art can easily think about changes or substitutions within the technical scope of the present application, and the changes and substitutions are intended to be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.
Claims (6)
1. A control method of a water heater, comprising:
acquiring the ambient temperature of the water heater when the water heater meets the entering condition of a target running mode, and obtaining a first ambient temperature value, wherein the target running mode comprises a defrosting mode;
acquiring the temperature of a water tank when the water heater meets the exit condition of a target operation mode, and obtaining a first water temperature value;
determining a first target frequency according to the first environment temperature value and the first water temperature value within a target time period after defrosting of the water heater is finished;
controlling a compressor of the water heater to operate at a first target frequency within a target time period after the water heater exits the target operation mode, wherein the target time period is determined according to the environmental temperature after defrosting and the environmental temperature before defrosting;
the method further comprises the steps of:
after the target duration, collecting the ambient temperature of the water heater to obtain a second ambient temperature value;
after the target duration, collecting the temperature of a water tank of the water heater to obtain a second water temperature value;
determining a second target frequency according to the second ambient temperature value and the second water temperature value;
and controlling the compressor of the water heater to operate at the second target frequency.
2. A control device for a water heater, the device comprising:
the acquisition module acquires the ambient temperature when the water heater meets the entering condition of a target operation mode, and a first ambient temperature value is obtained, wherein the target operation mode comprises a defrosting mode;
the acquisition module is also used for acquiring the temperature of the water tank when the water heater meets the exit condition of the target operation mode, so as to obtain a first water temperature value;
the determining module is used for determining a first target frequency according to the first environment temperature value and the first water temperature value in a target time period after defrosting of the water heater is finished;
the control module is used for controlling the compressor of the water heater to operate at a first target frequency within a target time period after the water heater exits from the target operation mode, and the target time period is determined according to the environmental temperature after defrosting and the environmental temperature before defrosting;
the acquisition module is also used for acquiring the environmental temperature of the water heater after the target duration to obtain a second environmental temperature value;
the acquisition module is also used for acquiring the water tank temperature of the water heater after the target duration to obtain a second water temperature value;
the determining module is further configured to determine a second target frequency according to the second ambient temperature value and the second water temperature value;
the control module is also configured to control a compressor of the water heater to operate at the second target frequency.
3. A control device of a water heater, comprising: a plurality of memories and a plurality of processors;
the memory is used for storing program instructions;
the processor is configured to invoke program instructions in the memory to perform the method of claim 1.
4. A chip comprising at least one processor and a communication interface, the communication interface and the at least one processor being interconnected by wires, the at least one processor being configured to execute a computer program or instructions to perform the control method of claim 1.
5. A computer readable medium storing program code for computer execution, the program code comprising instructions for performing the method of claim 1.
6. A water heater comprising a control device as claimed in claim 2 or a chip as claimed in claim 4.
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103851793A (en) * | 2012-12-06 | 2014-06-11 | 珠海格力电器股份有限公司 | Control method and device for variable-frequency heat pump water heater |
| CN105202689A (en) * | 2014-06-27 | 2015-12-30 | 青岛海尔空调器有限总公司 | Method and system for improving target frequency control precision of compressor after defrosting of air conditioner |
| CN107560173A (en) * | 2017-08-03 | 2018-01-09 | 广东美的暖通设备有限公司 | Heat pump water-heating machine and its control method, control device |
| CN108826772A (en) * | 2018-05-03 | 2018-11-16 | 广东美的暖通设备有限公司 | Defrosting control method and system |
-
2021
- 2021-01-29 CN CN202110129037.4A patent/CN114811957B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103851793A (en) * | 2012-12-06 | 2014-06-11 | 珠海格力电器股份有限公司 | Control method and device for variable-frequency heat pump water heater |
| CN105202689A (en) * | 2014-06-27 | 2015-12-30 | 青岛海尔空调器有限总公司 | Method and system for improving target frequency control precision of compressor after defrosting of air conditioner |
| CN107560173A (en) * | 2017-08-03 | 2018-01-09 | 广东美的暖通设备有限公司 | Heat pump water-heating machine and its control method, control device |
| CN108826772A (en) * | 2018-05-03 | 2018-11-16 | 广东美的暖通设备有限公司 | Defrosting control method and system |
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| CN114811957A (en) | 2022-07-29 |
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