CN115435408A - Variable shunt noise reduction control method and system for air conditioner and air conditioner - Google Patents

Variable shunt noise reduction control method and system for air conditioner and air conditioner Download PDF

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Publication number
CN115435408A
CN115435408A CN202211215745.0A CN202211215745A CN115435408A CN 115435408 A CN115435408 A CN 115435408A CN 202211215745 A CN202211215745 A CN 202211215745A CN 115435408 A CN115435408 A CN 115435408A
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China
Prior art keywords
air conditioner
motor
frequency
noise reduction
modal frequency
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Pending
Application number
CN202211215745.0A
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Chinese (zh)
Inventor
吕科磊
赵凯强
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Qingdao Haier Air Conditioner Gen Corp Ltd
Qingdao Haier Air Conditioning Electric Co Ltd
Haier Smart Home Co Ltd
Original Assignee
Qingdao Haier Air Conditioner Gen Corp Ltd
Qingdao Haier Air Conditioning Electric Co Ltd
Haier Smart Home Co Ltd
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Application filed by Qingdao Haier Air Conditioner Gen Corp Ltd, Qingdao Haier Air Conditioning Electric Co Ltd, Haier Smart Home Co Ltd filed Critical Qingdao Haier Air Conditioner Gen Corp Ltd
Priority to CN202211215745.0A priority Critical patent/CN115435408A/en
Publication of CN115435408A publication Critical patent/CN115435408A/en
Priority to PCT/CN2023/092744 priority patent/WO2024066365A1/en
Pending legal-status Critical Current

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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
    • F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
    • F24F1/06—Separate outdoor units, e.g. outdoor unit to be linked to a separate room comprising a compressor and a heat exchanger
    • F24F1/14—Heat exchangers specially adapted for separate outdoor units
    • F24F1/16—Arrangement or mounting thereof
    • 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
    • F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
    • F24F11/41—Defrosting; Preventing freezing
    • F24F11/42—Defrosting; Preventing freezing of outdoor units
    • 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
    • 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
    • F24F11/89—Arrangement or mounting of control or safety devices
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
    • F24F13/24—Means for preventing or suppressing noise
    • 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
    • F25B41/20—Disposition of valves, e.g. of on-off valves or flow control valves
    • 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
    • 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
    • F25B41/40—Fluid line arrangements
    • F25B41/42—Arrangements for diverging or converging flows, e.g. branch lines or junctions
    • 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
    • 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
    • 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
    • F25B2500/00—Problems to be solved
    • F25B2500/12—Sound
    • 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
    • F25B2500/00—Problems to be solved
    • F25B2500/13—Vibrations
    • 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
    • F25B2600/021—Inverters therefor
    • 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
    • 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
    • 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
    • F25B2700/00—Sensing or detecting of parameters; Sensors therefor
    • F25B2700/21—Temperatures
    • F25B2700/2115—Temperatures of a compressor or the drive means therefor
    • F25B2700/21152—Temperatures of a compressor or the drive means therefor at the discharge side of the compressor

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Signal Processing (AREA)
  • Fuzzy Systems (AREA)
  • Mathematical Physics (AREA)
  • Air Conditioning Control Device (AREA)

Abstract

The invention relates to the technical field of air conditioners, and provides a variable shunt noise reduction control method and system for an air conditioner and the air conditioner. The variable shunt noise reduction control method of the air conditioner comprises the following steps: acquiring the carrier frequency of a computer board of an air conditioner and the motor modal frequency of a compressor of the air conditioner; and under the condition that the frequency difference value between the modal frequency of the motor and the carrier frequency of the computer board reaches a resonance preset value, adjusting the modal frequency of the motor to enable the frequency difference value to be different from the resonance preset value, and controlling the shunting mode of the air conditioner in response to the adjustment of the modal frequency of the motor. The invention can reduce or even eliminate electromagnetic noise, ensure the stable operation of the air conditioner and effectively improve the use experience of users.

Description

Variable shunt noise reduction control method and system for air conditioner and air conditioner
Technical Field
The invention relates to the technical field of air conditioners, in particular to a variable shunt noise reduction control method and system for an air conditioner and the air conditioner.
Background
An air conditioner is a device capable of realizing refrigeration or heating, generally, a refrigeration or heating circulation loop is formed by a compressor, a condenser, a throttle valve, an evaporator and other components, and the circulation refrigeration or heating is realized through centralized control of a computer board.
At present, the air conditioner is when the low frequency operation, when computer board carrier frequency is close with compressor motor modal frequency, leads to compressor motor resonance easily, produces electromagnetic noise, seriously influences user's use and experiences.
Disclosure of Invention
The invention provides a variable shunt noise reduction control method and system for an air conditioner and the air conditioner, which can reduce or even eliminate electromagnetic noise, ensure stable operation of the air conditioner and effectively improve the use experience of a user.
The invention provides a variable shunt noise reduction control method of an air conditioner, which comprises the following steps:
acquiring the carrier frequency of a computer board of an air conditioner and the motor modal frequency of a compressor of the air conditioner;
and under the condition that the frequency difference value between the modal frequency of the motor and the carrier frequency of the computer board reaches a resonance preset value, adjusting the modal frequency of the motor to enable the frequency difference value to be different from the resonance preset value, and controlling the shunting mode of the air conditioner in response to the adjustment of the modal frequency of the motor.
According to the variable shunt noise reduction control method of the air conditioner, provided by the invention, the step of adjusting the modal frequency of the motor to enable the frequency difference value to be different from the resonance preset value specifically comprises the following steps: and increasing or decreasing the modal frequency of the motor to enable the frequency difference value to be different from the preset resonance value.
According to the variable shunt noise reduction control method of the air conditioner, provided by the invention, the step of controlling the shunt mode of the air conditioner in response to the adjustment of the modal frequency of the motor specifically comprises the following steps:
in a refrigeration mode, increasing the modal frequency of the motor, and controlling the air conditioner to operate in a single-path shunting mode;
and in the heating mode, the modal frequency of the motor is reduced, and the air conditioner is controlled to operate in a multi-path shunting mode.
According to the variable shunt noise reduction control method of the air conditioner, the step of controlling the shunt mode of the air conditioner in response to the adjustment of the modal frequency of the motor further comprises the following steps: the method comprises the steps of obtaining the current running ambient temperature of the air conditioner, and determining that the air conditioner runs to a cooling mode or a heating mode according to the ambient temperature.
According to the variable shunt noise reduction control method of the air conditioner provided by the invention, after the step of controlling the shunt mode of the air conditioner, the method further comprises the following steps:
acquiring the exhaust temperature of the air conditioner compressor;
and adjusting the opening of the throttle valve of the air conditioner according to the exhaust temperature of the compressor of the air conditioner.
According to the variable shunt noise reduction control method of the air conditioner, provided by the invention, the step of adjusting the opening of the throttle valve of the air conditioner according to the exhaust temperature of the compressor of the air conditioner specifically comprises the following steps: and comparing the exhaust temperature of the compressor with a target temperature, and adjusting the opening of the throttle valve according to the comparison result to keep the exhaust temperature of the compressor at the target temperature.
According to the variable shunt noise reduction control method of the air conditioner, the air conditioner is controlled to keep running in the current state under the condition that the frequency difference value between the modal frequency of the motor and the carrier frequency of the computer board does not reach the preset resonance value.
The invention also provides a variable shunt noise reduction control system of the air conditioner, which comprises:
the acquisition module is used for acquiring the carrier frequency of the computer board of the air conditioner and the motor modal frequency of the compressor of the air conditioner;
and the control module is used for adjusting the modal frequency of the motor under the condition that the frequency difference value between the modal frequency of the motor and the carrier frequency of the computer board reaches a resonance preset value, so that the frequency difference value is different from the resonance preset value, and controlling the shunting mode of the air conditioner in response to the adjustment of the modal frequency of the motor.
The present invention also provides an air conditioner including: the variable shunt noise reduction control system of the air conditioner is disclosed.
The invention also provides electronic equipment which comprises a memory, a processor and a computer program which is stored on the memory and can run on the processor, wherein when the processor executes the program, the variable shunt noise reduction control method of the air conditioner is realized.
According to the air conditioner variable shunt noise reduction control method and system and the air conditioner, the carrier frequency of the computer board of the air conditioner and the motor modal frequency of the compressor of the air conditioner are obtained, and under the condition that the frequency difference value between the motor modal frequency and the carrier frequency of the computer board reaches the resonance preset value, the motor modal frequency is adjusted, so that the frequency difference value is different from the resonance preset value, the motor resonance of the compressor can be avoided, and the electromagnetic noise is reduced; and the split-flow mode of the air conditioner is controlled in response to the mode frequency of the adjusting motor, so that the air conditioner can operate in a stable state, and the heat exchange effect of the air conditioner is ensured. Therefore, the invention can reduce or even eliminate electromagnetic noise, ensure the stable operation of the air conditioner and effectively improve the use experience of users.
Drawings
In order to more clearly illustrate the technical solutions of the present invention or the related art, the drawings required to be used in the description of the embodiments or the related art are briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
FIG. 1 is a schematic structural view of a variable flow divider provided in accordance with the present invention;
FIG. 2 is a schematic structural diagram of a heat exchanger provided by the present invention;
FIG. 3 is a schematic flow chart of a variable split noise reduction control method for an air conditioner according to the present invention;
FIG. 4 is a second schematic flow chart of a method for controlling noise reduction in a variable split flow of an air conditioner according to the present invention;
FIG. 5 is a schematic structural diagram of a variable split noise reduction control system of an air conditioner according to the present invention;
fig. 6 is a schematic structural diagram of an electronic device provided in the present invention.
Reference numerals:
1: a diverter valve; 101: a first communication port; 102: a second communication port; 103: a third communication port; 104: a fourth communication port; 2: a first shunt line; 3: a second shunt line; 4: a heat exchange line; 5: a one-way valve; 6: an acquisition module; 7: a control module; 801: a processor; 802: a communication interface; 803: a memory; 804: a communication bus.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. 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.
In the description of the embodiments of the present invention, the terms "first", "second", and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the embodiments of the present invention, it should be noted that, unless explicitly stated or limited otherwise, the terms "connected" and "connected" are to be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. Specific meanings of the above terms in the embodiments of the present invention can be understood in specific cases by those of ordinary skill in the art.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of an embodiment of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
To better understand the split mode of the air conditioner, the split mode of the air conditioner will be described first with reference to fig. 1 and 2.
According to an embodiment of the present invention, referring to fig. 1 and 2, a variable flow dividing device is provided in an outdoor heat exchanger of an air conditioner, the variable flow dividing device including: the system comprises a reversing valve 1, a first shunt pipeline 2, a second shunt pipeline 3 and at least two heat exchange pipelines 4. The first shunt pipeline 2 is connected with the second shunt pipeline 3 through at least two heat exchange pipelines 4; the first shunt pipeline 2 and the second shunt pipeline 3 are respectively provided with a main pipeline and a plurality of branch pipelines, and the middle branch pipeline can be provided with a one-way valve 5 according to requirements.
The reversing valve 1 is a two-position four-way reversing valve, the reversing valve 1 is provided with a first communicating port 101, a second communicating port 102, a third communicating port 103 and a fourth communicating port 104, and the reversing valve 1 is provided with a first station and a second station. The first communication port 101 is connected to the refrigerant inlet, and the third communication port 103 is connected to the refrigerant outlet.
The air conditioner has a variable shunting state and a fixed shunting state through the variable shunting device. Under the condition of variable shunt state, the refrigerant in the heat exchanger of the air conditioner adjusts the shunt state; under the condition of fixed flow dividing state, the flow dividing state of the refrigerant in the heat exchanger of the air conditioner is fixed.
The shunting state is divided into single-path shunting and multi-path shunting, and under the multi-path shunting mode, the refrigerant in the outdoor heat exchanger of the air conditioner is subjected to multi-path shunting to work. In the single-path shunting mode, a refrigerant in an outdoor heat exchanger of the air conditioner works in a single path. That is, the air conditioner is switched between the one-way split mode and the multi-way split mode in the variable split state, and the air conditioner is operated in the one-way split mode or the multi-way split mode in a fixed split state.
In the multi-path flow dividing mode, the reversing valve 1 is in the first station, the first communication port 101 is communicated with the second communication port 102, and the third communication port 103 is communicated with the fourth communication port 104. At this time, the second communication port 102 communicates with the first branch line 2, and the fourth communication port 104 communicates with the second branch line 3. The refrigerant of the refrigerant inlet enters from the first shunt pipeline 2, is shunted by the branch pipelines of the first shunt pipeline 2, enters each heat exchange pipeline 4 to exchange heat with air respectively, enters the main pipeline of the second shunt pipeline 3 from the branch pipelines, finally passes through the fourth communicating port 104 and the third communicating port 103, is discharged from the refrigerant outlet, and realizes the heat exchange of a plurality of pipelines.
In the one-way flow splitting mode, the selector valve 1 is in the second position, the first communication port 101 is communicated with the fourth communication port 104, and the third communication port 103 is communicated with the second communication port 102. At this time, the second communication port 102 communicates with the second branch flow passage 3, and the fourth communication port 104 communicates with the first branch flow passage 2. The refrigerant of the refrigerant inlet enters from the second shunting pipeline 3, and the one-way valve 5 is arranged in part of pipelines in the first shunting pipeline 2, so that the refrigerant circulation of the pipelines is blocked by the one-way valve 5, the refrigerant can only be subjected to heat exchange and discharged in part of heat exchange pipelines 4, and the heat exchange pipelines can be reduced at the moment.
In a specific example, two heat exchange lines 4 are taken as an example, a first heat exchange line and a second heat exchange line. First reposition of redundant personnel pipeline 2 and second reposition of redundant personnel pipeline 3 all are equipped with a trunk line and two spinal branchs way, are equipped with check valve 5 in the spinal branch pipeline in the first reposition of redundant personnel pipeline 2.
In the multi-path flow dividing mode, the selector valve 1 is in the first position, the first communication port 101 communicates with the second communication port 102, and the third communication port 103 communicates with the fourth communication port 104. At this time, the second communication port 102 communicates with the first branch line 2, and the fourth communication port 104 communicates with the second branch line 3. The refrigerant of the refrigerant inlet enters from the first shunt pipeline 2, is shunted by the branch pipeline of the first shunt pipeline 2, enters the first heat exchange pipeline and the second heat exchange pipeline respectively to exchange heat with air, enters the main pipeline of the second shunt pipeline 3 from the branch pipeline, finally passes through the fourth communicating port 104 and the third communicating port 103, is discharged from the refrigerant outlet, and realizes the simultaneous heat exchange of the two pipelines.
In the one-way flow splitting mode, the selector valve 1 is in the second position, the first communication port 101 communicates with the fourth communication port 104, and the third communication port 103 communicates with the second communication port 102. At this time, the second communication port 102 communicates with the second branch flow passage 3, and the fourth communication port 104 communicates with the first branch flow passage 2. The refrigerant at the refrigerant inlet enters from the second shunting pipeline 3, and because the check valve 5 is arranged in the branch pipeline in the first shunting pipeline 2, the refrigerant can only exchange heat and be discharged from the first heat exchange pipeline under the blocking effect, and at the moment, the heat exchange is carried out only through one heat exchange pipeline.
The air conditioner variable split noise reduction control method, system and air conditioner according to the present invention will be described with reference to fig. 3 to 6.
According to an embodiment of the present invention, referring to fig. 3, the method for controlling noise reduction in a variable split flow of an air conditioner provided by the present invention mainly includes:
s100, obtaining the carrier frequency of the computer board of the air conditioner and the motor modal frequency of the compressor of the air conditioner.
When the air conditioner runs at a low frequency, when the onboard wave frequency of the computer is close to the modal frequency of the motor of the compressor, the motor of the compressor is easy to resonate to generate electromagnetic noise, so that the onboard wave frequency of the computer and the modal frequency of the motor of the compressor need to be monitored in real time.
S200, under the condition that the frequency difference value between the modal frequency of the compressor motor and the carrier frequency of the computer board reaches a resonance preset value, adjusting the modal frequency of the motor to enable the frequency difference value to be different from the resonance preset value, and controlling the shunting mode of the air conditioner in response to the adjustment of the modal frequency of the motor.
When the modal frequency of the compressor motor is close to the carrier frequency of the computer board, the compressor motor resonates to generate electromagnetic noise, and the occurrence of a resonance phenomenon is avoided by changing the modal frequency of the compressor motor, so that the electromagnetic noise can be reduced; and because after the motor modal frequency of the compressor is adjusted, the load of the compressor can be changed, the heat exchange effect is correspondingly changed, at the moment, the air conditioner can be operated in a stable state by adjusting the shunting mode of the air conditioner, and the heat exchange effect of the air conditioner is ensured.
Therefore, the variable shunt noise reduction control method of the air conditioner provided by the invention has the advantages that the carrier frequency of the computer board of the air conditioner and the motor modal frequency of the compressor of the air conditioner are obtained, and the motor modal frequency is adjusted under the condition that the frequency difference value between the motor modal frequency and the carrier frequency of the computer board reaches the resonance preset value, so that the frequency difference value is different from the resonance preset value, the motor resonance of the compressor can be avoided, and the electromagnetic noise is reduced; and the split-flow mode of the air conditioner is controlled in response to the mode frequency of the adjusting motor, so that the air conditioner can operate in a stable state, and the heat exchange effect of the air conditioner is ensured. Therefore, the invention can reduce or even eliminate electromagnetic noise, ensure the stable operation of the air conditioner and effectively improve the use experience of users.
According to an embodiment of the present invention, the step of adjusting the modal frequency of the motor to make the frequency difference different from the preset resonance value specifically includes: and increasing or decreasing the modal frequency of the motor to enable the frequency difference to be different from the preset resonance value. The resonance preset value can be understood as a set frequency difference value when the frequency of the modal frequency of the motor and the frequency of the carrier frequency of the computer board are close to generate resonance, and the resonance preset value can be specifically designed according to the actual working condition of the air conditioner.
According to an embodiment of the present invention, the step of controlling the split mode of the air conditioner in response to adjusting the modal frequency of the motor specifically includes:
in the refrigeration mode, the modal frequency of the motor is increased, and the air conditioner is controlled to operate in a single-path shunting mode; and in the heating mode, the modal frequency of the motor is reduced, and the air conditioner is controlled to operate in a multi-path shunting mode.
It should be noted that, the lengths of the pipelines and the pipes through which the heat exchanger in the prior art flows during cooling and heating are the same, but actually, the states of the refrigerants inside the pipes, the heat exchange temperature difference between the inside of the pipe and the environment, the flowing speed of the refrigerants, the pressure drop, the heat exchange coefficients and the like of the heat exchanger, particularly the heat pump heat exchanger, during cooling and heating are different.
When the heat exchanger is used as a condenser, the gaseous refrigerant is continuously liquefied along the flowing direction of the refrigerant, and the liquid refrigerant is more and more until the outlet is completely converted into the liquid refrigerant. According to the principle of continuity of flow, along the refrigerant flow direction, the mass flow rate of the refrigerant is constant, while the specific volume of the gaseous refrigerant is more than ten times of that of the liquid refrigerant, taking R410A refrigerant as an example, the saturated steam specific volume at 40 ℃ is 0.01003m 3 Per kg, specific volume of saturated liquid 0.00106m 3 The specific volume of the gas state is 9.5 times of the liquid state, namely the density of the liquid state is 9.5 times of the density of the gas state, the volume of the liquefied refrigerant is greatly reduced, the flow rate of the refrigerant is greatly reduced, and the flow rate of the refrigerant at the outlet section is low, so the heat exchange coefficient is also low. Therefore, the optimum heat exchange effect cannot be achieved. Therefore, when the heat exchanger is used as a condenser, the supercooling degree can be improved for improving the heat exchange effect, because the space occupied by the liquid refrigerant is increased after the supercooling section of the condenser is enlarged, the number of flow paths occupied by the saturation section and the superheating section is reduced, the total pressure drop of the condenser is reduced, the flow speed reduction is reduced, the heat transfer coefficient is large, and the heat exchange capacity is large. Therefore, the smaller the cooling flow path, the better the cooling effect, and the load becomes when the motor mode frequency of the compressor is increased in the cooling modeBig, at this moment, through control air conditioner operation to single pass reposition of redundant personnel mode, can effectively improve the heat transfer operation effect of air conditioner, realize the matching to guarantee the current operating stability of air conditioner, improve user's use and experience.
And when the heat exchanger is used as an evaporator, the refrigerant flows in opposite directions, the refrigerant is changed from a liquid state to a gaseous state along with the heat exchange, the volume is continuously increased, the flow velocity is increased in the equal sectional area, and the flow pressure loss of the refrigerant is increased due to overhigh flow velocity, so that part of heat exchange performance is counteracted.
When heating at low temperature, the heat exchanger is used as an evaporator, the inner side of the pipe is provided with a low-temperature low-pressure refrigerant, and due to the fact that air quantity distribution is not uniform due to structural limitation, the position with small air quantity absorbs external heat slowly, frost is formed firstly, heat transfer with an external machine becomes slower after frost is formed, vicious circulation is achieved, the frost is formed thicker, and heating capacity is seriously attenuated. Therefore, when the outdoor heat exchanger is used as an evaporator, the flow path cannot be too long, the pressure drop is larger if the flow path is too long, the frost formation is more serious if the temperature is lower, the number of the flow paths is increased as much as possible, the pressure drop is reduced, and the temperature of each flow path is uniform. Therefore, the more the heating flow paths, the better the heating effect, and under the heating mode, when the motor modal frequency of the compressor is reduced, the heat exchange effect is poor, at the moment, the heating quantity of the air conditioner can be effectively improved by controlling the air conditioner to operate to a multi-path shunting mode, and the stability of the heating effect of the air conditioner is ensured, so that the use experience of a user is ensured.
According to an embodiment of the present invention, the step of controlling the split mode of the air conditioner in response to adjusting the modal frequency of the motor further comprises: and acquiring the current running ambient temperature of the air conditioner, and determining that the air conditioner runs to a cooling mode or a heating mode according to the ambient temperature.
For example, the air conditioner is controlled to operate to the heating mode when the outdoor environment is in a winter season in which the temperature is low, and to operate to the cooling mode when the outdoor environment is in a summer season in which the temperature is high.
According to an embodiment of the present invention, after the step of controlling the split mode of the air conditioner, the method further comprises: acquiring the exhaust temperature of an air conditioner compressor; and adjusting the opening of the throttle valve of the air conditioner according to the exhaust temperature of the compressor of the air conditioner, so as to ensure the current running stability of the air conditioner.
The method comprises the following steps of adjusting the opening of an air conditioner throttle valve according to the exhaust temperature of an air conditioner compressor, and specifically comprises the following steps: and comparing the exhaust temperature of the compressor with the target temperature, adjusting the opening of the throttle valve according to the comparison result, and adjusting the refrigerating capacity to keep the exhaust temperature of the compressor at the target temperature. The target temperature may be designed according to different requirements of users, and is not particularly limited.
According to the invention, the throttle valve is adjusted after the shunting mode of the air conditioner is controlled, so that the running stability of the air conditioner can be further ensured, and the use experience of a user is effectively improved.
According to one embodiment of the invention, under the condition that the frequency difference value between the modal frequency of the motor and the carrier frequency of the computer board does not reach the preset resonance value, the air conditioner is controlled to keep running in the current state and is not processed.
The variable split noise reduction control method of the air conditioner according to the present invention will be further described with reference to a specific example, which is shown in fig. 4 and substantially includes:
(1) Starting the air conditioner;
(2) Detecting the carrier frequency of a computer board of the air conditioner and the motor modal frequency of a compressor of the air conditioner;
(3) Judging whether the frequency difference value between the modal frequency of the compressor motor and the carrier frequency of the computer board reaches a resonance preset value or not, and if not, not processing; if yes, carrying out the next step;
(4) Increasing or decreasing the modal frequency of the motor to enable the frequency difference value to be different from a resonance preset value, so as to avoid resonance;
(5) Controlling a shunting mode;
(6) And the opening of the throttle valve is adjusted to ensure the stable operation of the air conditioner.
The air conditioner variable shunt noise reduction control system provided by the invention is described below, and the air conditioner variable shunt noise reduction control system described below and the control method described above can be referred to correspondingly.
According to an embodiment of the present invention, referring to fig. 5, the present invention further provides a variable split-flow noise reduction control system for an air conditioner, mainly comprising: an acquisition module 6 and a control module 7. The acquisition module 6 is used for acquiring the carrier frequency of the computer board of the air conditioner and the motor modal frequency of the compressor of the air conditioner; the control module 7 is used for adjusting the modal frequency of the motor under the condition that the frequency difference value between the modal frequency of the motor and the carrier frequency of the computer board reaches a resonance preset value, so that the frequency difference value is different from the resonance preset value, and controlling the shunting mode of the air conditioner in response to the adjustment of the modal frequency of the motor.
According to the variable shunt noise reduction control system of the air conditioner, the carrier frequency of a computer board of the air conditioner and the motor modal frequency of a compressor of the air conditioner are monitored in real time through the acquisition module 6, the motor modal frequency is adjusted through the control module 7, the motor resonance of the compressor is avoided, and the electromagnetic noise is reduced; and the control module 7 controls the shunting mode of the air conditioner, so that the air conditioner can operate in a stable state, and the heat exchange effect of the air conditioner is ensured. Therefore, the control system can reduce or even eliminate the electromagnetic noise of the air conditioner, ensure the stable operation of the air conditioner and improve the use experience of users.
According to an embodiment of the present invention, there is also provided an air conditioner including: the air conditioner variable shunt noise reduction control system of the embodiment.
According to an embodiment of the present invention, as shown in fig. 6, the present invention also provides an electronic device, which may include: a processor (processor) 801, a communication Interface (Communications Interface) 802, a memory (memory) 803, and a communication bus 804, wherein the processor 801, the communication Interface 802, and the memory 803 communicate with each other via the communication bus 804. The processor 801 may call logic instructions in the memory 803 to execute a variable split noise reduction control method of an air conditioner, the method comprising: acquiring the carrier frequency of a computer board of an air conditioner and the motor modal frequency of a compressor of the air conditioner; and under the condition that the frequency difference value between the modal frequency of the motor and the carrier frequency of the computer board reaches a resonance preset value, adjusting the modal frequency of the motor to enable the frequency difference value to be different from the resonance preset value, and controlling the shunting mode of the air conditioner in response to the adjustment of the modal frequency of the motor.
In addition, the logic instructions in the memory 803 may be implemented in the form of software functional units and stored in a computer readable storage medium when the logic instructions are sold or used as independent products. Based on such understanding, the technical solution of the present invention may be embodied in the form of a software product, which is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes.
In another aspect, the present invention also provides a computer program product, the computer program product comprising a computer program, the computer program being stored on a non-transitory computer-readable storage medium, wherein when the computer program is executed by a processor, the computer is capable of executing the air conditioner variable split noise reduction control method provided by the above methods, the method comprising: acquiring the carrier frequency of a computer board of an air conditioner and the motor modal frequency of a compressor of the air conditioner; and under the condition that the frequency difference value between the modal frequency of the motor and the carrier frequency of the computer board reaches a resonance preset value, adjusting the modal frequency of the motor to enable the frequency difference value to be different from the resonance preset value, and controlling the shunting mode of the air conditioner in response to the adjustment of the modal frequency of the motor.
In still another aspect, the present invention also provides a non-transitory computer-readable storage medium having stored thereon a computer program, which when executed by a processor, is implemented to perform the method for controlling variable split noise reduction of an air conditioner provided by the above methods, the method including: acquiring the carrier frequency of a computer board of an air conditioner and the motor modal frequency of a compressor of the air conditioner; and under the condition that the frequency difference value between the modal frequency of the motor and the carrier frequency of the computer board reaches a resonance preset value, adjusting the modal frequency of the motor to enable the frequency difference value to be different from the resonance preset value, and controlling the shunting mode of the air conditioner in response to the adjustment of the modal frequency of the motor.
The above-described embodiments of the apparatus are merely illustrative, and the units described as separate parts may or may not be physically separate, and parts displayed 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 modules may be selected according to actual needs to achieve the purpose of the solution of the present embodiment. One of ordinary skill in the art can understand and implement it without inventive effort.
Through the above description of the embodiments, those skilled in the art will clearly understand that each embodiment may be implemented by software plus a necessary general hardware platform, and may also be implemented by hardware. With this understanding in mind, the above-described technical solutions may be embodied in the form of a software product, which can be stored in a computer-readable storage medium such as ROM/RAM, magnetic disk, optical disk, etc., and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to execute the methods described in the embodiments or some parts of the embodiments.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.

Claims (10)

1. A variable shunt noise reduction control method of an air conditioner is characterized by comprising the following steps:
acquiring the carrier frequency of a computer board of an air conditioner and the motor modal frequency of a compressor of the air conditioner;
and under the condition that the frequency difference value between the modal frequency of the motor and the carrier frequency of the computer board reaches a resonance preset value, adjusting the modal frequency of the motor to enable the frequency difference value to be different from the resonance preset value, and controlling the shunting mode of the air conditioner in response to the adjustment of the modal frequency of the motor.
2. The method for controlling variable shunt noise reduction of an air conditioner according to claim 1, wherein the step of adjusting the modal frequency of the motor to make the frequency difference value different from the preset resonance value specifically comprises: and increasing or decreasing the modal frequency of the motor to enable the frequency difference to be different from the preset resonance value.
3. The method for controlling variable shunt noise reduction of the air conditioner according to claim 2, wherein the step of controlling the shunt mode of the air conditioner in response to adjusting the modal frequency of the motor specifically comprises:
in a refrigeration mode, increasing the modal frequency of the motor, and controlling the air conditioner to operate in a single-path shunting mode;
and in the heating mode, reducing the modal frequency of the motor, and controlling the air conditioner to operate in a multi-path shunting mode.
4. The variable split noise reduction control method of an air conditioner according to claim 3, wherein the step of controlling the split mode of the air conditioner in response to adjusting the motor modal frequency further comprises: the method comprises the steps of obtaining the current running ambient temperature of the air conditioner, and determining that the air conditioner runs to a cooling mode or a heating mode according to the ambient temperature.
5. The variable split noise reduction control method of an air conditioner according to any one of claims 1 to 4, further comprising, after the step of controlling the split mode of the air conditioner:
acquiring the exhaust temperature of the air conditioner compressor;
and adjusting the opening of the throttle valve of the air conditioner according to the exhaust temperature of the compressor of the air conditioner.
6. The method according to claim 5, wherein the step of adjusting the opening of the air conditioner throttle valve according to the discharge temperature of the air conditioner compressor specifically comprises: and comparing the exhaust temperature of the compressor with a target temperature, and adjusting the opening of the throttle valve according to the comparison result to keep the exhaust temperature of the compressor at the target temperature.
7. The variable shunt noise reduction control method of the air conditioner according to any one of claims 1 to 4, wherein the air conditioner is controlled to keep operating in a current state under the condition that the frequency difference between the modal frequency of the motor and the carrier frequency of the computer board does not reach a preset resonance value.
8. A variable split-flow noise reduction control system of an air conditioner is characterized by comprising:
the acquisition module is used for acquiring the carrier frequency of the computer board of the air conditioner and the motor modal frequency of the compressor of the air conditioner;
and the control module is used for adjusting the modal frequency of the motor under the condition that the frequency difference value between the modal frequency of the motor and the carrier frequency of the computer board reaches a resonance preset value, so that the frequency difference value is different from the resonance preset value, and controlling the shunting mode of the air conditioner in response to the adjustment of the modal frequency of the motor.
9. An air conditioner, comprising: the air conditioner variable split noise reduction control system of claim 8.
10. An electronic device comprising a memory, a processor and a computer program stored on the memory and executable on the processor, wherein the processor implements the air conditioner variable split noise reduction control method according to any one of claims 1 to 7 when executing the program.
CN202211215745.0A 2022-09-30 2022-09-30 Variable shunt noise reduction control method and system for air conditioner and air conditioner Pending CN115435408A (en)

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