CN109237751B - Method, device, equipment and medium for quickly achieving unit target capacity - Google Patents
Method, device, equipment and medium for quickly achieving unit target capacity Download PDFInfo
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- CN109237751B CN109237751B CN201810832471.7A CN201810832471A CN109237751B CN 109237751 B CN109237751 B CN 109237751B CN 201810832471 A CN201810832471 A CN 201810832471A CN 109237751 B CN109237751 B CN 109237751B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
- F24F11/80—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air
- F24F11/86—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling compressors within refrigeration or heat pump circuits
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
- F24F11/63—Electronic processing
- F24F11/64—Electronic processing using pre-stored data
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
- F24F11/80—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air
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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
- F25B41/00—Fluid-circulation arrangements
- F25B41/30—Expansion means; Dispositions thereof
- F25B41/31—Expansion valves
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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
- F25B49/022—Compressor control arrangements
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2110/00—Control inputs relating to air properties
- F24F2110/10—Temperature
- F24F2110/12—Temperature of the outside air
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2140/00—Control inputs relating to system states
- F24F2140/20—Heat-exchange fluid temperature
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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
- F25B2600/00—Control issues
- F25B2600/02—Compressor control
- F25B2600/025—Compressor control by controlling speed
- F25B2600/0253—Compressor control by controlling speed with variable speed
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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
- F25B2600/00—Control issues
- F25B2600/25—Control of valves
- F25B2600/2513—Expansion valves
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Thermal Sciences (AREA)
- Signal Processing (AREA)
- Fuzzy Systems (AREA)
- Mathematical Physics (AREA)
- Air Conditioning Control Device (AREA)
Abstract
The invention provides a method for quickly achieving the target capacity of a unit, which comprises the steps of acquiring the current compressor frequency value corresponding to the current water temperature difference in real time from a temperature difference corresponding frequency table; during refrigeration, acquiring a refrigeration compressor frequency correction coefficient value corresponding to the current outdoor environment temperature according to a refrigeration correction coefficient table; obtaining a target refrigeration compressor frequency value according to a preset refrigeration capacity, a current refrigeration capacity, the current compressor frequency value and a refrigeration compressor frequency correction coefficient value; when heating, acquiring a heating compressor frequency correction coefficient value corresponding to the current outdoor environment temperature according to the heating correction coefficient table; and obtaining a target heating compressor frequency value according to a preset heating amount, the current compressor frequency value and the heating compressor frequency correction coefficient value. The target capacity of the unit can be quickly achieved, so that the compressor can quickly reach the target refrigerating capacity or heating capacity set by a user, and the water temperature fluctuation of the user in the use process is effectively avoided.
Description
Technical Field
The invention relates to the technical field of heat pump control, in particular to a method, a device, equipment and a medium for quickly achieving a set target capacity.
Background
At present, in a cooling and heating mode, when the outdoor environment temperature reaches or approaches to a set temperature, because the heat exchange load is reduced, and meanwhile, in order to maintain the stability of the outdoor environment temperature, the maximum operation frequency of a compressor is generally limited in control, so that the compressor is switched from high-frequency operation to low-frequency operation, and the inverter heat pump air conditioner can achieve an energy-saving effect under the condition of meeting the set temperature.
In a frequency conversion heat pump system, after a user sets a required target temperature, the frequency of a compressor of the unit is gradually adjusted by a PID algorithm according to the deviation between the actual outlet water temperature and the set temperature, and the frequency of the compressor is gradually adjusted in a mode that the time for the compressor to reach the target temperature of the user is longer, namely the time consumed for reaching the target heating capacity or refrigerating capacity set by the user is longer, the fluctuation of the water temperature can be caused in the gradual adjusting process, the stable operation time of the compressor is long, and the use experience of the user is influenced.
Disclosure of Invention
The embodiment of the invention provides a method, a device, equipment and a medium for quickly achieving the target capacity of a unit, which can quickly achieve the target capacity of the unit, so that a compressor can quickly achieve the target refrigerating capacity or heating capacity set by a user, and the water temperature fluctuation of the user in the using process is effectively avoided. The compressor achieves short stable operation time and improves the use experience of users.
In a first aspect, the invention provides a method for quickly achieving a set target capacity, which includes the steps of acquiring a current compressor frequency value corresponding to a current water temperature difference in real time from a temperature difference corresponding frequency table; wherein the water temperature difference is the temperature difference between inlet water and outlet water;
when the current working mode is refrigeration, acquiring a refrigeration compressor frequency correction coefficient value corresponding to the current outdoor environment temperature according to the refrigeration correction coefficient table;
obtaining a target refrigeration compressor frequency value according to a preset refrigeration amount, a current refrigeration amount, the current compressor frequency value and the refrigeration compressor frequency correction coefficient value;
when the current working mode is heating, acquiring a heating compressor frequency correction coefficient value corresponding to the current outdoor environment temperature according to the heating correction coefficient table;
and obtaining a target heating compressor frequency value according to a preset heating amount, the current compressor frequency value and the heating compressor frequency correction coefficient value.
In a first possible implementation manner of the first aspect, the method further includes:
and acquiring the initial opening degree of the electronic expansion valve corresponding to the current outdoor environment temperature according to an initial opening degree table.
With reference to the first possible implementation manner of the first aspect, in a second possible implementation manner of the first aspect, the method further includes:
adjusting the initial opening degree of the electronic expansion valve according to the initial opening degree of the electronic expansion valve;
adjusting the frequency of the compressor according to the target refrigeration compressor frequency value or the target heating compressor frequency value;
and adjusting the opening degree of the electronic expansion valve in real time according to the current frequency of the compressor after adjustment based on the initial opening degree of the electronic expansion valve.
In a third possible implementation manner of the first aspect, the temperature difference corresponding frequency table includes a compressor frequency value other than a resonant frequency value of the compressor.
In a fourth possible implementation manner of the first aspect, the current cooling capacity or the current heating capacity is calculated according to a derivation formula of real-time monitored instantaneous water flow, real-time obtained water temperature difference, and specific heat capacity.
In a fifth possible implementation manner of the first aspect, the obtaining a target refrigeration compressor frequency value according to a preset refrigeration capacity, a current refrigeration capacity, the current compressor frequency value, and the refrigeration compressor frequency correction coefficient value includes:
and the target refrigeration compressor frequency value is equal to the product of the ratio of the preset refrigeration capacity to the current refrigeration capacity multiplied by the frequency correction coefficient value of the refrigeration compressor and the current compressor frequency value.
In a sixth possible implementation manner of the first aspect, the obtaining a target heating compressor frequency value according to a preset heating amount, a current heating amount, the current compressor frequency value, and the heating compressor frequency correction coefficient value includes:
the target heating compressor frequency value is equal to a product of a ratio of the preset heating amount to the current heating amount multiplied by the heating compressor frequency correction coefficient value and the current compressor frequency value.
In a second aspect, an embodiment of the present invention provides an apparatus for quickly achieving a target capability of a unit, where the apparatus includes:
the current compressor frequency value acquisition module is used for acquiring a current compressor frequency value corresponding to the current water temperature difference in real time from the temperature difference corresponding frequency table; wherein the water temperature difference is the temperature difference between inlet water and outlet water;
the refrigeration compressor frequency correction coefficient value acquisition module is used for acquiring a refrigeration compressor frequency correction coefficient value corresponding to the current outdoor environment temperature according to the refrigeration correction coefficient table when the current working mode is refrigeration;
the target refrigeration compressor frequency value obtaining module is used for obtaining a target refrigeration compressor frequency value according to preset refrigeration capacity, current refrigeration capacity, the current compressor frequency value and the refrigeration compressor frequency correction coefficient value;
the heating compressor frequency correction coefficient value acquisition module is used for acquiring a heating compressor frequency correction coefficient value corresponding to the current outdoor environment temperature according to the heating correction coefficient table when the current working mode is heating;
and the target heating compressor frequency value acquisition module is used for acquiring a target heating compressor frequency value according to a preset heating amount, a current heating amount, the current compressor frequency value and the heating compressor frequency correction coefficient value.
In a third aspect, an embodiment of the present invention provides an apparatus for quickly achieving a unit target capability, including a processor, a memory, and a computer program stored in the memory and configured to be executed by the processor, where the processor, when executing the computer program, implements a method for quickly achieving a unit target capability as described above.
In a fourth aspect, an embodiment of the present invention provides a computer-readable storage medium, where the computer-readable storage medium includes a stored computer program, where, when the computer program runs, the apparatus where the computer-readable storage medium is located is controlled to execute the method for quickly achieving the unit target capability, as described above.
Compared with the prior art, the method has the advantages that the method for quickly achieving the target capacity of the unit is provided, and the current compressor frequency value corresponding to the current water temperature difference is obtained in real time from the temperature difference corresponding frequency table; wherein the water temperature difference is the temperature difference between inlet water and outlet water; when the current working mode is refrigeration, acquiring a refrigeration compressor frequency correction coefficient value corresponding to the current outdoor environment temperature according to the refrigeration correction coefficient table; obtaining a target refrigeration compressor frequency value according to a preset refrigeration amount, a current refrigeration amount, the current compressor frequency value and the refrigeration compressor frequency correction coefficient value; when the current working mode is heating, acquiring a heating compressor frequency correction coefficient value corresponding to the current outdoor environment temperature according to the heating correction coefficient table; and obtaining a target heating compressor frequency value according to a preset heating amount, the current compressor frequency value and the heating compressor frequency correction coefficient value. The target capacity of the unit can be quickly achieved, so that the compressor can quickly reach the target refrigerating capacity or heating capacity set by a user, and the water temperature fluctuation of the user in the use process is effectively avoided. The compressor achieves short stable operation time and improves the use experience of users.
Drawings
Fig. 1 is a schematic diagram of a device for quickly achieving a target capacity of a unit according to an embodiment of the present invention;
fig. 2 is a schematic flow chart of a method for quickly achieving a target capability of a unit according to a second embodiment of the present invention;
fig. 3 is a schematic structural diagram of a device for quickly achieving a target capacity of a unit according to a third embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As will be appreciated by one skilled in the art, the present invention may be embodied as an apparatus, method or computer program product. Accordingly, the present disclosure may be embodied in the form of: may be embodied entirely in hardware, entirely in software (including firmware, resident software, micro-code, etc.) or in a combination of hardware and software, and may be referred to herein generally as a "circuit," module "or" system. Furthermore, in some embodiments, the invention may also be embodied in the form of a computer program product in one or more computer-readable media having computer-readable program code embodied in the medium.
Any combination of one or more computer-readable media may be employed. The computer readable medium may be a computer readable signal medium or a computer readable storage medium. A computer readable storage medium may be, for example, but not limited to, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any combination of the foregoing. More specific examples (a non-exhaustive list) of the computer readable storage medium would include the following: an electrical connection having one or more wires, a portable computer diskette, a hard disk, a Random Access Memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disc read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing. In the context of this document, a computer readable storage medium may be any tangible medium that can contain, or store a program for use by or in connection with an instruction execution system, apparatus, or device.
A computer readable signal medium may include a propagated data signal with computer readable program code embodied therein, for example, in baseband or as part of a carrier wave. Such a propagated data signal may take any of a variety of forms, including, but not limited to, electro-magnetic, optical, or any suitable combination thereof. A computer readable signal medium may also be any computer readable medium that is not a computer readable storage medium and that can communicate, propagate, or transport a program for use by or in connection with an instruction execution system, apparatus, or device.
Program code embodied on a computer readable medium may be transmitted using any appropriate medium, including but not limited to wireless, wireline, optical fiber cable, RF, etc., or any suitable combination of the foregoing.
Computer program code for carrying out operations for aspects of the present invention may be written in any combination of one or more programming languages, including an object oriented programming language such as Java, Smalltalk, C + + or the like and conventional procedural programming languages, such as the "C" programming language or similar programming languages. The program code may execute entirely on the user's computer, partly on the user's computer, as a stand-alone software package, partly on the user's computer and partly on a remote computer or entirely on the remote computer or server. In the case of a remote computer, the remote computer may be connected to the user's computer through any type of network, including a Local Area Network (LAN) or a Wide Area Network (WAN), or the connection may be made to an external computer (for example, through the Internet using an Internet service provider).
The present invention is described below with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems) and computer program products according to embodiments of the invention. It will be understood that each block of the flowchart illustrations and/or block diagrams, and combinations of blocks in the flowchart illustrations and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, or other programmable data processing apparatus to produce a virtual machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions/acts specified in the flowchart and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable medium that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable medium produce an article of manufacture including instruction means (instructions) which implement the function/act specified in the flowchart and/or block diagram block or blocks.
The computer program instructions may also be loaded onto a computer, other programmable data processing apparatus, or other devices to cause a series of operational steps to be performed on the computer, other programmable apparatus or other devices to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide processes for implementing the functions/acts specified in the flowchart and/or block diagram block or blocks.
Example one
Referring to fig. 1, fig. 1 is a schematic diagram of a device for quickly achieving a target capacity of a unit according to an embodiment of the present invention; in the method for quickly achieving the unit target capability according to the embodiment of the present invention, as shown in fig. 1, the antenna configuration device includes: at least one processor 11, such as a CPU, at least one network interface 14 or other user interface 13, a memory 15, at least one communication bus 12, the communication bus 12 being used to enable connectivity communications between these components. The user interface 13 may optionally include a USB interface, and other standard interfaces, wired interfaces. The network interface 14 may optionally include a Wi-Fi interface as well as other wireless interfaces. The memory 15 may comprise a high-speed RAM memory, and may also include a non-volatile memory (non-volatile memory), such as at least one disk memory. The memory 15 may optionally comprise at least one memory device located remotely from the aforementioned processor 11.
In some embodiments, memory 15 stores the following elements, executable modules or data structures, or a subset thereof, or an expanded set thereof:
an operating system 151, which contains various system programs for implementing various basic services and for processing hardware-based tasks;
and (5) a procedure 152.
Specifically, the processor 11 is configured to call the program 152 stored in the memory 15 to execute the method for quickly achieving the unit target capacity according to the embodiment of the present invention.
The Processor may be a Central Processing Unit (CPU), other general purpose Processor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), an off-the-shelf Programmable Gate Array (FPGA) or other Programmable logic device, discrete Gate or transistor logic, discrete hardware components, etc. The general purpose processor may be a microprocessor or the processor may be any conventional processor or the like, the processor is a control center of the method for rapidly achieving the unit target capacity, and various interfaces and lines are used for connecting various parts of the whole method for rapidly achieving the unit target capacity.
The memory may be used to store the computer programs and/or modules, and the processor may implement various functions of the electronic device that quickly achieve the unit target capability by running or executing the computer programs and/or modules stored in the memory and calling the data stored in the memory. The memory 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 by at least one function (such as a sound playing function, a text conversion function, etc.), and the like; the storage data area may store data (such as audio data, text message data, etc.) created according to the use of the cellular phone, etc. In addition, the memory may include high speed random access memory, and may also include non-volatile memory, such as a hard disk, a memory, a plug-in hard disk, a Smart Media Card (SMC), a Secure Digital (SD) Card, a Flash memory Card (Flash Card), at least one magnetic disk storage device, a Flash memory device, or other volatile solid state storage device.
Wherein, the module for rapidly achieving the integration of the unit target capability can be stored in a computer readable storage medium if the module is realized in the form of a software functional unit and sold or used as an independent product. Based on such understanding, all or part of the flow of the method according to the embodiments of the present invention may be implemented by a computer program, which may be stored in a computer-readable storage medium and used by a processor to implement the steps of the method embodiments of the present invention. Wherein the computer program comprises computer program code, which may be in the form of source code, object code, an executable file or some intermediate form, etc. The computer-readable medium may include: any entity or device capable of carrying the computer program code, recording medium, usb disk, removable hard disk, magnetic disk, optical disk, computer Memory, Read-Only Memory (ROM), Random Access Memory (RAM), electrical carrier wave signals, telecommunications signals, software distribution medium, and the like.
A method of rapidly achieving a unit target capability according to an embodiment of the present invention will be described below with reference to the accompanying drawings.
Example two
Referring to fig. 2, fig. 2 is a schematic flow chart of a method for quickly achieving a target capability of a unit according to a second embodiment of the present invention, where the method includes:
s11, acquiring a current compressor frequency value corresponding to the current water temperature difference in real time from the temperature difference corresponding frequency table; wherein the water temperature difference is the temperature difference between inlet water and outlet water;
s12, when the current working mode is refrigeration, obtaining a refrigeration compressor frequency correction coefficient value corresponding to the current outdoor environment temperature according to the refrigeration correction coefficient table;
s13, obtaining a target refrigeration compressor frequency value according to a preset refrigeration amount, a current refrigeration amount, the current compressor frequency value and the refrigeration compressor frequency correction coefficient value;
s14, when the current working mode is heating, obtaining a heating compressor frequency correction coefficient value corresponding to the current outdoor environment temperature according to the heating correction coefficient table;
and S15, obtaining a target heating compressor frequency value according to a preset heating amount, the current compressor frequency value and the heating compressor frequency correction coefficient value.
It should be noted that, in the embodiment of the present invention, the method for quickly achieving the target capacity of the unit is a method for quickly achieving a heating capacity or a cooling capacity of a preset target of the unit.
It should be noted that steps S12 and S14 are determined according to the current operation mode, and when the current operation mode is heating, steps S14 and S15 are executed directly after step S11 is executed; when the current operation mode is cooling, after the step S11 is completed, the steps S12 and S13 are directly performed, which is not limited in the present invention.
In the embodiment of the invention, after a user resets the target heating capacity or refrigerating capacity, the unit calculates the current running heating capacity or refrigerating capacity according to the flow and the water inlet and outlet temperature difference monitored by the unit in real time, determines the current compressor frequency, and obtains the target compressor frequency corresponding to the set target temperature through calculation, so that the unit capacity is quickly adjusted by directly adjusting the frequency of the compressor to be the target compressor frequency, and the output of the target heating capacity and refrigerating capacity of the user is realized.
Specifically, in step S11, a current compressor frequency value corresponding to the current water temperature difference is obtained in real time from the temperature difference corresponding frequency table; the water temperature difference is the temperature difference between inlet water and outlet water, temperature sensors are arranged at the water inlet and the water outlet of the variable-frequency heat pump unit, and the calculated temperature difference between the inlet water and the outlet water can be calculated by acquiring the temperature of inlet water and the temperature of outlet water of the unit through the temperature sensors.
Preferably, the current refrigerating capacity or the current heating capacity is obtained by calculation according to a derivation formula of instantaneous water flow monitored in real time, water temperature difference obtained in real time and specific heat capacity.
In this embodiment, a variable-frequency dc speed-regulating water pump is configured for the unit, a flow meter is built in the water pump, and the instantaneous flow rate flowing through the dc speed-regulating water pump can be monitored in real time, the water temperature difference is obtained by combining with the above step S11, and the real-time cooling capacity Q1 of the unit is calculated according to a specific heat capacity derivation formula, where Q1 is the cooling capacity or the heating capacity, c is the specific heat capacity, m is the mass of the object, and Δ t is the temperature difference of the object.
Preferably, in step S13, the obtaining a target refrigeration compressor frequency value according to a preset refrigeration capacity, a current refrigeration capacity, the current compressor frequency value, and the refrigeration compressor frequency correction coefficient value includes:
and the target refrigeration compressor frequency value is equal to the product of the ratio of the preset refrigeration capacity to the current refrigeration capacity multiplied by the frequency correction coefficient value of the refrigeration compressor and the current compressor frequency value.
In this embodiment, the compressor frequency of the inverter heat pump system is in a direct proportion to the refrigerating capacity of the unit, and according to the preset refrigerating capacity Q2 set by the user, the current refrigerating capacity Q1 of the unit, the current compressor frequency value H1, and the refrigerating compressor frequency correction coefficient X1, the compressor target refrigerating compressor frequency value H2 is calculated as Q2/Q1H 1X 1, and the refrigerating capacity of the unit required by the user target is quickly achieved by directly adjusting the compressor frequency.
Preferably, the obtaining a target heating compressor frequency value according to a preset heating amount, a current heating amount, the current compressor frequency value, and the heating compressor frequency correction coefficient value at step S15 includes:
the target heating compressor frequency value is equal to a product of a ratio of the preset heating amount to the current heating amount multiplied by the heating compressor frequency correction coefficient value and the current compressor frequency value.
In this embodiment, the compressor frequency of the inverter heat pump system is in a direct proportion to the unit cooling capacity, and according to the preset heating capacity Q3 set by the user, the current cooling capacity Q1 of the unit, the current compressor frequency value H1, and the heating compressor frequency correction coefficient X2, the compressor target heating compressor frequency value H3-Q3/Q1-H1-X2 is calculated, and the unit heating capacity required by the user target is quickly achieved by directly adjusting the compressor frequency.
Preferably, the method further comprises the following steps:
and acquiring the initial opening degree of the electronic expansion valve corresponding to the current outdoor environment temperature according to an initial opening degree table.
Preferably, the method further comprises the following steps:
adjusting the initial opening degree of the electronic expansion valve according to the initial opening degree of the electronic expansion valve;
adjusting the frequency of the compressor according to the target refrigeration compressor frequency value or the target heating compressor frequency value;
and adjusting the opening degree of the electronic expansion valve in real time according to the current frequency of the compressor after adjustment based on the initial opening degree of the electronic expansion valve.
In the embodiment of the present invention, after the initial opening degree of the electronic expansion valve is adjusted according to the initial opening degree of the electronic expansion valve, the unit adjusts the frequency of the compressor according to the target frequency value of the refrigeration compressor or the target frequency value of the heating compressor, the frequency of the compressor is changed in real time, and the opening degree of the electronic expansion valve is adjusted in real time according to the current frequency of the compressor after adjustment based on the initial opening degree of the electronic expansion valve.
Preferably, the temperature difference corresponding frequency table includes a compressor frequency value other than a resonant frequency value of the compressor.
It should be noted that, in the prior art, a resonant frequency point of the compressor exists in an operating frequency range of the compressor, and the gradual adjustment may cause the compressor to operate at the resonant frequency point, which affects the stability of the operation of the compressor.
In the embodiment of the invention, in the frequency table corresponding to the temperature difference, the corresponding optimal compressor frequency is set according to the difference of the actual water inlet and outlet temperature difference, the resonance frequency point of the compressor is eliminated, and the resonance frequency point can be successfully avoided in the frequency modulation process of the compressor, so that the compressor is effectively protected.
Specifically, a variable-frequency direct-current speed-regulating water pump is configured for the unit, a flowmeter is arranged in the water pump, and the instantaneous flow passing through the direct-current speed-regulating water pump can be monitored in real time; the water inlet and outlet of the condenser of the unit are provided with temperature sensors, the temperature of the water inlet and outlet of the heat exchanger of the unit is collected through the temperature sensors to obtain the temperature difference of the water inlet and outlet of the unit, and the real-time refrigerating capacity or heating capacity Q1 of the unit is calculated through a specific heat capacity derivation formula; according to the range of the actual temperature difference of inlet and outlet water detected by the temperature sensor, searching a compressor frequency value H1 corresponding to the temperature difference of the water temperature from the temperature difference corresponding table, wherein the temperature difference corresponding table is shown in table 1, judging that the current working mode is a refrigeration mode, monitoring the current environment temperature in real time, searching a corresponding refrigeration correction coefficient table according to the detected environment temperature value, determining a refrigeration compressor frequency correction coefficient value X1 corresponding to the current environment temperature, the refrigeration correction coefficient table is shown in table 2, judging that the current working mode is a heating mode, monitoring the current environment temperature in real time, searching a corresponding heating correction coefficient table according to the detected environment temperature value, determining a heating compressor frequency correction coefficient value X2 corresponding to the current environment temperature, the heating correction coefficient table is shown in table 3, and the compressor frequency is in direct proportion to the heating quantity or the cooling quantity of the unit, according to preset refrigerating capacity Q2 set by a user, the current refrigerating capacity Q1 of the unit, the current compressor frequency value H1 and the frequency correction coefficient X1 of the refrigerating compressor, calculating the compressor target refrigerating compressor frequency value H2 which is Q2/Q1 which is H1 which is X1, and quickly achieving the unit refrigerating capacity required by the user target by directly adjusting the compressor frequency; according to preset heating capacity Q3 set by a user, current refrigerating capacity Q1 of a unit, the current compressor frequency value H1 and the heating compressor frequency correction coefficient X2, calculating the compressor target heating compressor frequency value H3-Q3/Q1-H1-X2, and directly adjusting the compressor frequency to quickly reach the unit heating capacity required by the user target; after the unit runs for a period of time, the input power of the unit is changed due to the adjustment of the frequency of a compressor of the unit, and the temperature difference between inlet water and outlet water of the unit is also changed, at the moment, the frequency of the compressor is adjusted in real time by monitoring the temperature difference between the inlet water and the outlet water of the unit in real time; in addition, the electronic expansion valve of the unit is provided with different optimal initial opening degrees according to different detected ambient temperatures, the unit inquires a related electronic expansion valve initial opening degree table by monitoring the outdoor ambient temperature in real time, namely the initial opening degree table directly adjusts the opening degree of the electronic expansion valve to a corresponding initial opening degree value as shown in table 4, and the target heating capacity or refrigerating capacity set by a user is quickly achieved by combining the frequency adjustment of the compressor.
| Setting temperature difference | Frequency of press |
| T5≤△T | H1 |
| T6≤△T<T5 | H2 |
| T7≤△T<T6 | H3 |
| T8≤△T<T7 | H4 |
| △T<T9 | H5 |
TABLE 1
Among them, H1 is H2 is H3 is H4 is H5, which is not limited in the invention.
| Outdoor temperature | Correction factor |
| T<t1 | Y1 |
| t1≤T<t2 | Y2 |
| t2≤T<t3 | Y3 |
| t3≤T<t4 | Y4 |
| t4≤T<t5 | Y5 |
| t5≤T<t6 | Y6 |
| T>＝t6 | Y7 |
TABLE 2
Wherein Y1 is not less than Y2 is not less than Y3 is not less than Y4 is not less than Y5 is not less than Y6 is not less than Y7, which is not limited in the present invention.
| Outdoor temperature | Correction factor |
| T<t6 | Y8 |
| t6≤T<t7 | Y9 |
| t7≤T<t8 | Y10 |
| t8≤T<t9 | Y11 |
| t9≤T<t10 | Y12 |
| t10≤T<t11 | Y13 |
| t11≤T<t12 | Y14 |
| T>＝t12 | Y15 |
TABLE 3
Wherein Y8 is not less than Y9 is not less than Y10 is not less than Y11 is not less than Y12 is not less than Y13 is not less than Y14 is not less than Y15, which is not limited in the present invention.
TABLE 4
Wherein: t1 < T2 < T3 < T4 < T5, and X1 < X2 < X3 < X5 < X4, which are not particularly limited in the present invention.
It should be noted that the table data of the above table is the best data finally obtained through a large number of experimental tests and analyses.
The embodiment has the following beneficial effects:
the invention provides a method for quickly achieving the target capacity of a unit, which comprises the steps of acquiring the current compressor frequency value corresponding to the current water temperature difference in real time from a temperature difference corresponding frequency table; wherein the water temperature difference is the temperature difference between inlet water and outlet water; when the current working mode is refrigeration, acquiring a refrigeration compressor frequency correction coefficient value corresponding to the current outdoor environment temperature according to the refrigeration correction coefficient table; obtaining a target refrigeration compressor frequency value according to a preset refrigeration amount, a current refrigeration amount, the current compressor frequency value and the refrigeration compressor frequency correction coefficient value; when the current working mode is heating, acquiring a heating compressor frequency correction coefficient value corresponding to the current outdoor environment temperature according to the heating correction coefficient table; and obtaining a target heating compressor frequency value according to a preset heating amount, the current compressor frequency value and the heating compressor frequency correction coefficient value. The target capacity of the unit can be quickly achieved, so that the compressor can quickly reach the target refrigerating capacity or heating capacity set by a user, and the water temperature fluctuation of the user in the use process is effectively avoided. The compressor achieves short stable operation time and improves the use experience of users.
EXAMPLE III
The invention also provides a device for quickly achieving the target capacity of the unit, and referring to fig. 3, fig. 3 is a schematic structural diagram of a device for quickly achieving the target capacity of the unit according to a third embodiment of the invention. The method comprises the following steps:
a current compressor frequency value obtaining module 31, configured to obtain a current compressor frequency value corresponding to the current water temperature difference in real time from the temperature difference corresponding frequency table; wherein the water temperature difference is the temperature difference between inlet water and outlet water;
a refrigeration compressor frequency correction coefficient value obtaining module 32, configured to obtain, according to the refrigeration correction coefficient table, a refrigeration compressor frequency correction coefficient value corresponding to the current outdoor environment temperature when the current working mode is refrigeration;
the target refrigeration compressor frequency value obtaining module 33 is configured to obtain a target refrigeration compressor frequency value according to a preset refrigeration capacity, a current refrigeration capacity, the current compressor frequency value, and the refrigeration compressor frequency correction coefficient value;
a heating compressor frequency correction coefficient value obtaining module 34, configured to obtain, when the current working mode is heating, a heating compressor frequency correction coefficient value corresponding to the current outdoor environment temperature according to the heating correction coefficient table;
the target heating compressor frequency value obtaining module 35 is configured to obtain a target heating compressor frequency value according to a preset heating amount, a current heating amount, the current compressor frequency value, and the heating compressor frequency correction coefficient value.
Preferably, the method further comprises the following steps:
and the initial opening degree module is used for acquiring the initial opening degree of the electronic expansion valve corresponding to the current outdoor environment temperature according to an initial opening degree table.
Preferably, the method further comprises the following steps:
adjusting the initial opening degree of the electronic expansion valve according to the initial opening degree of the electronic expansion valve;
adjusting the frequency of the compressor according to the target refrigeration compressor frequency value or the target heating compressor frequency value;
and adjusting the opening degree of the electronic expansion valve in real time according to the current frequency of the compressor after adjustment based on the initial opening degree of the electronic expansion valve.
Preferably, the temperature difference corresponding frequency table includes a compressor frequency value other than a resonant frequency value of the compressor.
Preferably, the current refrigerating capacity or the current heating capacity is obtained by calculation according to a derivation formula of instantaneous water flow monitored in real time, water temperature difference obtained in real time and specific heat capacity.
Preferably, the obtaining a target refrigeration compressor frequency value according to a preset refrigeration capacity, a current refrigeration capacity, the current compressor frequency value and the refrigeration compressor frequency correction coefficient value includes:
and the target refrigeration compressor frequency value is equal to the product of the ratio of the preset refrigeration capacity to the current refrigeration capacity multiplied by the frequency correction coefficient value of the refrigeration compressor and the current compressor frequency value.
Preferably, the obtaining of the target heating compressor frequency value according to the preset heating amount, the current compressor frequency value and the heating compressor frequency correction coefficient value includes:
the target heating compressor frequency value is equal to a product of a ratio of the preset heating amount to the current heating amount multiplied by the heating compressor frequency correction coefficient value and the current compressor frequency value.
The embodiment has the following beneficial effects:
acquiring a current compressor frequency value corresponding to the current water temperature difference in real time from the temperature difference corresponding frequency table; wherein the water temperature difference is the temperature difference between inlet water and outlet water; when the current working mode is refrigeration, acquiring a refrigeration compressor frequency correction coefficient value corresponding to the current outdoor environment temperature according to the refrigeration correction coefficient table; obtaining a target refrigeration compressor frequency value according to a preset refrigeration amount, a current refrigeration amount, the current compressor frequency value and the refrigeration compressor frequency correction coefficient value; when the current working mode is heating, acquiring a heating compressor frequency correction coefficient value corresponding to the current outdoor environment temperature according to the heating correction coefficient table; and obtaining a target heating compressor frequency value according to a preset heating amount, the current compressor frequency value and the heating compressor frequency correction coefficient value. The target capacity of the unit can be quickly achieved, so that the compressor can quickly reach the target refrigerating capacity or heating capacity set by a user, and the water temperature fluctuation of the user in the use process is effectively avoided. The compressor achieves short stable operation time and improves the use experience of users.
While the invention has been described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.
It will be understood by those skilled in the art that all or part of the processes of the methods of the embodiments described above can be implemented by a computer program, which can be stored in a computer-readable storage medium, and when executed, can include the processes of the embodiments of the methods described above. The storage medium may be a magnetic disk, an optical disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), or the like.
Claims (7)
1. A method for quickly achieving the target capacity of a unit is characterized in that,
acquiring a current compressor frequency value corresponding to the current water temperature difference in real time from the temperature difference corresponding frequency table; wherein the water temperature difference is the temperature difference between inlet water and outlet water;
when the current working mode is refrigeration, acquiring a refrigeration compressor frequency correction coefficient value corresponding to the current outdoor environment temperature according to the refrigeration correction coefficient table;
obtaining a target refrigeration compressor frequency value according to a preset refrigeration amount, a current refrigeration amount, the current compressor frequency value and the refrigeration compressor frequency correction coefficient value;
when the current working mode is heating, acquiring a heating compressor frequency correction coefficient value corresponding to the current outdoor environment temperature according to the heating correction coefficient table;
obtaining a target heating compressor frequency value according to a preset heating amount, a current heating amount, the current compressor frequency value and the heating compressor frequency correction coefficient value;
wherein the temperature difference corresponding frequency table includes a compressor frequency value other than a resonant frequency value of the compressor;
the obtaining of the target refrigeration compressor frequency value according to the preset refrigeration capacity, the current compressor frequency value and the refrigeration compressor frequency correction coefficient value comprises:
the target refrigeration compressor frequency value is equal to the product of the ratio of the preset refrigeration capacity to the current refrigeration capacity multiplied by the frequency correction coefficient value of the refrigeration compressor and the current compressor frequency value;
the obtaining of the target heating compressor frequency value according to the preset heating amount, the current compressor frequency value and the heating compressor frequency correction coefficient value includes:
the target heating compressor frequency value is equal to a product of a ratio of the preset heating amount to the current heating amount multiplied by the heating compressor frequency correction coefficient value and the current compressor frequency value.
2. The method for rapidly achieving the unit target capacity according to claim 1, further comprising:
and acquiring the initial opening degree of the electronic expansion valve corresponding to the current outdoor environment temperature according to an initial opening degree table.
3. The method for rapidly achieving the unit target capacity according to claim 2, further comprising:
adjusting the initial opening degree of the electronic expansion valve according to the initial opening degree of the electronic expansion valve;
adjusting the frequency of the compressor according to the target refrigeration compressor frequency value or the target heating compressor frequency value;
and adjusting the opening degree of the electronic expansion valve in real time according to the current frequency of the compressor after adjustment based on the initial opening degree of the electronic expansion valve.
4. The method as claimed in claim 1, wherein the current cooling capacity or the current heating capacity is calculated according to a real-time monitoring instantaneous water flow, a real-time obtained water temperature difference and a specific heat capacity derivation formula.
5. An apparatus for rapidly achieving a target capacity of a unit, comprising:
the current compressor frequency value acquisition module is used for acquiring a current compressor frequency value corresponding to the current water temperature difference in real time from the temperature difference corresponding frequency table; wherein the water temperature difference is the temperature difference between inlet water and outlet water;
the refrigeration compressor frequency correction coefficient value acquisition module is used for acquiring a refrigeration compressor frequency correction coefficient value corresponding to the current outdoor environment temperature according to the refrigeration correction coefficient table when the current working mode is refrigeration;
the target refrigeration compressor frequency value obtaining module is used for obtaining a target refrigeration compressor frequency value according to preset refrigeration capacity, current refrigeration capacity, the current compressor frequency value and the refrigeration compressor frequency correction coefficient value;
the heating compressor frequency correction coefficient value acquisition module is used for acquiring a heating compressor frequency correction coefficient value corresponding to the current outdoor environment temperature according to the heating correction coefficient table when the current working mode is heating;
the target heating compressor frequency value acquisition module is used for acquiring a target heating compressor frequency value according to a preset heating amount, a current heating amount, the current compressor frequency value and the heating compressor frequency correction coefficient value;
wherein the temperature difference corresponding frequency table includes a compressor frequency value other than a resonant frequency value of the compressor;
the obtaining of the target refrigeration compressor frequency value according to the preset refrigeration capacity, the current compressor frequency value and the refrigeration compressor frequency correction coefficient value comprises:
the target refrigeration compressor frequency value is equal to the product of the ratio of the preset refrigeration capacity to the current refrigeration capacity multiplied by the frequency correction coefficient value of the refrigeration compressor and the current compressor frequency value;
the obtaining of the target heating compressor frequency value according to the preset heating amount, the current compressor frequency value and the heating compressor frequency correction coefficient value includes:
the target heating compressor frequency value is equal to a product of a ratio of the preset heating amount to the current heating amount multiplied by the heating compressor frequency correction coefficient value and the current compressor frequency value.
6. An apparatus for rapidly achieving a crew target capability, comprising a processor, a memory, and a computer program stored in the memory and configured to be executed by the processor, the processor implementing the method of rapidly achieving a crew target capability of any one of claims 1-4 when executing the computer program.
7. A computer-readable storage medium, comprising a stored computer program, wherein the computer program, when executed, controls an apparatus in which the computer-readable storage medium is located to perform the method for quickly reaching a crew target capability according to any one of claims 1 to 4.
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