CN114413404A - Method and device for reducing noise of air conditioner refrigerant, air conditioner and storage medium - Google Patents

Method and device for reducing noise of air conditioner refrigerant, air conditioner and storage medium Download PDF

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Publication number
CN114413404A
CN114413404A CN202111562577.8A CN202111562577A CN114413404A CN 114413404 A CN114413404 A CN 114413404A CN 202111562577 A CN202111562577 A CN 202111562577A CN 114413404 A CN114413404 A CN 114413404A
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Prior art keywords
expansion valve
electronic expansion
opening degree
auxiliary
auxiliary electronic
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CN202111562577.8A
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CN114413404B (en
Inventor
吴海波
何洋
李召勇
张铭
罗三
李春风
王峰
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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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Priority to CN202111562577.8A priority Critical patent/CN114413404B/en
Publication of CN114413404A publication Critical patent/CN114413404A/en
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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
    • F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
    • 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
    • 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
    • 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
    • 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
    • F24F2013/247—Active noise-suppression
    • 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
    • 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
    • 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)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • Fuzzy Systems (AREA)
  • Mathematical Physics (AREA)
  • Air Conditioning Control Device (AREA)

Abstract

The utility model relates to an intelligence household electrical appliances technical field discloses a method for reducing air conditioner refrigerant noise, and the air conditioner is including being used for separating into gaseous state and liquid auxiliary gas-liquid separator, the plate heat exchanger that is used for the secondary subcooling and the auxiliary electronic expansion valve with the refrigerant after outdoor heat exchanger outflow and throttle, and the liquid refrigerant is sent into indoor set to plate heat exchanger's main flow path, and the auxiliary flow path sends the gaseous refrigerant of auxiliary electronic expansion valve throttle into the off-premises station, the method includes: detecting the outdoor environment temperature; and adjusting the opening degree of the auxiliary electronic expansion valve when the outdoor environment temperature is greater than or equal to the temperature threshold value. The gaseous refrigerant is sent into the indoor unit by the plate heat exchanger because the gaseous refrigerant enters the outdoor unit through the auxiliary flow path of the plate heat exchanger, so that the gaseous refrigerant sent into the indoor unit by the plate heat exchanger is reduced, and the flowing noise of the gaseous refrigerant in the indoor unit is reduced when the air conditioner is supercooled for the second time. The application also discloses a device, an air conditioner and a storage medium for reducing the noise of the air conditioner refrigerant.

Description

Method and device for reducing noise of air conditioner refrigerant, air conditioner and storage medium
Technical Field
The present invention relates to the field of intelligent household electrical appliance technologies, and for example, to a method and an apparatus for reducing noise of a refrigerant of an air conditioner, and a storage medium.
Background
At present, when an air conditioner is operated, cooling and heating are realized through a refrigerant in a heat exchanger. The refrigerant can produce the noise when flowing in the indoor set, influences user's experience.
The method for reducing the noise of the air conditioner refrigerant in the prior art comprises the following steps: when the air conditioner is in a quiet mode, controlling the starting of an inverter compressor of the air conditioner at a first frequency; after the first preset time, controlling the variable frequency compressor to perform frequency boosting at a first preset speed; judging whether the current frequency of the variable frequency compressor reaches the frequency corresponding to the noise set value in the quiet mode; if the current frequency of the variable frequency compressor reaches the frequency corresponding to the noise set value in the quiet mode, controlling the variable frequency compressor to stop increasing the frequency; the first preset time is the time required for the pressure difference between the high-pressure side and the low-pressure side of the variable-frequency compressor to reach the preset pressure difference after the variable-frequency compressor of the air conditioner is controlled to be started at the first frequency; the air conditioner is provided with a high-pressure side pressure detection unit and a low-pressure side pressure detection unit which are respectively used for reading the pressure of corresponding positions; and after each frequency rise, if the pressure difference between the high pressure side and the low pressure side reaches the frequency rise value, continuing the frequency rise.
In the process of implementing the embodiments of the present disclosure, it is found that at least the following problems exist in the related art:
the technology reduces the flow quantity and impact force of the refrigerant by increasing the frequency of the compressor, thereby reducing the noise of the refrigerant flow. However, the refrigerant flowing through the indoor unit includes two portions of a liquid refrigerant and a gaseous refrigerant, and the gaseous refrigerant generates a large noise in the indoor unit.
Disclosure of Invention
The following presents a simplified summary in order to provide a basic understanding of some aspects of the disclosed embodiments. This summary is not an extensive overview nor is intended to identify key/critical elements or to delineate the scope of such embodiments but rather as a prelude to the more detailed description that is presented later.
The embodiment of the disclosure provides a method and a device for reducing noise of a refrigerant of an air conditioner, the air conditioner and a storage medium, so as to reduce flowing noise of a gaseous refrigerant in an indoor unit during secondary supercooling of the air conditioner.
In some embodiments, the air conditioner includes an auxiliary gas-liquid separator for separating a refrigerant flowing out of and throttled by an outdoor heat exchanger into a gas state and a liquid state, a plate heat exchanger for secondary supercooling, and an auxiliary electronic expansion valve, wherein a main flow path of the plate heat exchanger feeds the liquid refrigerant to an indoor unit, and the auxiliary flow path feeds the gas refrigerant throttled by the auxiliary electronic expansion valve to the outdoor unit, and the method includes: detecting the outdoor environment temperature; and adjusting the opening degree of the auxiliary electronic expansion valve when the outdoor environment temperature is greater than or equal to the temperature threshold value.
Optionally, adjusting the opening degree of the auxiliary electronic expansion valve comprises: determining the supercooling degree; and adjusting the opening degree of the auxiliary electronic expansion valve according to the supercooling degree.
Optionally, determining a degree of supercooling comprises: detecting the temperature of a pipeline in the middle of the outdoor heat exchanger; detecting the temperature of an outlet of a main flow path of the plate heat exchanger; and determining the difference between the temperature of the middle pipeline and the temperature of the outlet as the supercooling degree.
Optionally, adjusting the opening degree of the auxiliary electronic expansion valve according to the supercooling degree includes: determining a target opening degree of the auxiliary electronic expansion valve corresponding to the supercooling degree according to the supercooling degree; the opening degree of the auxiliary electronic expansion valve is adjusted to a target opening degree.
Optionally, adjusting the opening degree of the auxiliary electronic expansion valve according to the supercooling degree includes: determining a target opening degree of the auxiliary electronic expansion valve according to the supercooling degree and the current opening degree of the auxiliary electronic expansion valve; the opening degree of the auxiliary electronic expansion valve is adjusted to a target opening degree.
Optionally, determining a target opening degree of the auxiliary electronic expansion valve according to the supercooling degree and the current opening degree of the auxiliary electronic expansion valve, including: under the condition that the supercooling degree is less than a first set threshold value, determining the target opening degree of the auxiliary electronic expansion valve as Yn＝Yn-1+α1A; determining the target opening degree of the auxiliary electronic expansion valve as Y under the condition that the supercooling degree is greater than a second set threshold valuen＝Yn-1-A/α2(ii) a Determining the target opening degree of the auxiliary electronic expansion valve as the current opening degree under the condition that the supercooling degree is greater than or equal to a first set threshold value and less than or equal to a second set threshold value; adjusting the opening degree of the auxiliary electronic expansion valve to a target opening degree; wherein, YnTo assist the target opening degree of the electronic expansion valve, Yn-1To assist the current opening degree of the electronic expansion valve, A is the supercooling degree, alpha1Is a first supercooling degree conversion coefficient, alpha2Is the second subcooling coefficient.
Optionally, the method further comprises: and closing the auxiliary electronic expansion valve under the condition that the outdoor environment temperature is less than the temperature threshold value.
In some embodiments, the apparatus includes a processor and a memory storing program instructions, the processor being configured to execute the method for reducing noise of air conditioning refrigerant when executing the program instructions.
In some embodiments, the air conditioner includes: an outdoor heat exchanger; one end of the main electronic expansion valve is connected with one end of the outdoor heat exchanger; the inlet of the auxiliary gas-liquid separator is connected with the other end of the main electronic expansion valve; the plate heat exchanger comprises a main flow path and an auxiliary flow path, wherein one end of the main flow path is connected with a liquid outlet of the auxiliary gas-liquid separator, the other end of the main flow path conveys liquid refrigerant to the indoor unit, and one end of the auxiliary flow path conveys gaseous refrigerant to the outdoor unit; one end of the auxiliary electronic expansion valve is connected with the air outlet of the auxiliary gas-liquid separator, and the other end of the auxiliary electronic expansion valve is connected with the other end of the auxiliary flow path of the plate heat exchanger; and the device for reducing the noise of the air-conditioning refrigerant.
In some embodiments, the storage medium stores program instructions that, when executed, perform the above-described method for reducing noise of air conditioning refrigerant.
The method and the device for reducing noise of the air conditioner refrigerant, the air conditioner and the storage medium provided by the embodiment of the disclosure can realize the following technical effects:
the air conditioner detects an outdoor ambient temperature. When the outdoor environment temperature is higher, the refrigerant flowing out of the outdoor heat exchanger and throttled contains more gaseous parts. And throttling the gaseous refrigerant separated from the auxiliary gas-liquid separator by adjusting the opening of the auxiliary electronic expansion valve, so that the plate heat exchanger is cooled to realize secondary supercooling. The gaseous refrigerant is sent into the indoor unit by the plate heat exchanger because the gaseous refrigerant enters the outdoor unit through the auxiliary flow path of the plate heat exchanger, so that the gaseous refrigerant sent into the indoor unit by the plate heat exchanger is reduced, and the flowing noise of the gaseous refrigerant in the indoor unit is reduced when the air conditioner is supercooled for the second time.
The foregoing general description and the following description are exemplary and explanatory only and are not restrictive of the application.
Drawings
One or more embodiments are illustrated by way of example in the accompanying drawings, which correspond to the accompanying drawings and not in limitation thereof, in which elements having the same reference numeral designations are shown as like elements and not in limitation thereof, and wherein:
fig. 1 is a schematic structural diagram of an air conditioner provided in an embodiment of the present disclosure;
FIG. 2 is a schematic diagram of electrical connections of an air conditioner according to an embodiment of the present disclosure;
fig. 3 is a schematic diagram illustrating a method for reducing noise of a refrigerant of an air conditioner according to an embodiment of the disclosure;
fig. 4 is a schematic diagram illustrating another method for reducing noise of air-conditioning refrigerant according to an embodiment of the disclosure;
fig. 5 is a schematic diagram illustrating another method for reducing noise of air-conditioning refrigerant according to an embodiment of the disclosure;
fig. 6 is a schematic diagram illustrating another method for reducing noise of air-conditioning refrigerant according to an embodiment of the disclosure;
fig. 7 is a schematic diagram illustrating another method for reducing noise of air-conditioning refrigerant according to an embodiment of the disclosure;
fig. 8 is a schematic view illustrating an apparatus for reducing noise of a refrigerant of an air conditioner according to an embodiment of the disclosure.
Reference numerals:
1: an air conditioner; 11: a compressor; 12: an outdoor heat exchanger; 13: a main electronic expansion valve; 14: an auxiliary gas-liquid separator; 15: a plate heat exchanger; 16: an indoor heat exchanger; 17: an auxiliary electronic expansion valve; 18: a compressor gas-liquid separator; 19: a first temperature sensor; 20: a second temperature sensor; 21: a third temperature sensor; 41: a processor; 42: a memory; 43: a communication interface; 44: a bus.
Detailed Description
So that the manner in which the features and elements of the disclosed embodiments can be understood in detail, a more particular description of the disclosed embodiments, briefly summarized above, may be had by reference to the embodiments, some of which are illustrated in the appended drawings. In the following description of the technology, for purposes of explanation, numerous details are set forth in order to provide a thorough understanding of the disclosed embodiments. However, one or more embodiments may be practiced without these details. In other instances, well-known structures and devices may be shown in simplified form in order to simplify the drawing.
The terms "first," "second," and the like in the description and in the claims, and the above-described drawings of embodiments of the present disclosure, are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It should be understood that the data so used may be interchanged under appropriate circumstances such that embodiments of the present disclosure described herein may be made. Furthermore, the terms "comprising" and "having," as well as any variations thereof, are intended to cover non-exclusive inclusions.
The term "plurality" means two or more unless otherwise specified.
In the embodiment of the present disclosure, the character "/" indicates that the preceding and following objects are in an or relationship. For example, A/B represents: a or B.
The term "and/or" is an associative relationship that describes objects, meaning that three relationships may exist. For example, a and/or B, represents: a or B, or A and B.
The term "correspond" may refer to an association or binding relationship, and a corresponds to B refers to an association or binding relationship between a and B.
Referring to fig. 1 and 2, an embodiment of the present disclosure provides an air conditioner 1 including a compressor 11, an outdoor heat exchanger 12, a main electronic expansion valve 13, an auxiliary gas-liquid separator 14, a plate heat exchanger 15, an indoor heat exchanger 16, an auxiliary electronic expansion valve 17, and a compressor gas-liquid separator 18. The discharge port of the compressor 11 is connected to one end of the outdoor heat exchanger 12, and the intake port is connected to the discharge port of the compressor gas-liquid separator 18. The other end of the outdoor heat exchanger 12 is connected to one end of a main electronic expansion valve 13. The other end of the main electronic expansion valve 13 is connected to the inlet of the auxiliary gas-liquid separator 14. The liquid outlet of the auxiliary gas-liquid separator 14 is connected to one end of the main flow path of the plate heat exchanger 15, and the gas outlet is connected to one end of an auxiliary electronic expansion valve 17. The other end of the main flow path of the plate heat exchanger 15 is connected to one end of the indoor heat exchanger 16, one end of the auxiliary flow path is connected to the other end of the auxiliary electronic expansion valve 17, and the other end is connected to an inlet of the compressor gas-liquid separator 18. The other end of the indoor heat exchanger 16 is connected to the inlet of the compressor gas-liquid separator 18.
Optionally, the air conditioner 1 further includes a first temperature sensor 19, a second temperature sensor 20, a third temperature sensor 21, and a processor 41. The first temperature sensor 19 is disposed in the middle of the pipeline of the outdoor heat exchanger 12, and is configured to detect the temperature of the pipeline in the middle of the outdoor heat exchanger 12. The second temperature sensor 20 is provided on the outlet side of the main flow path of the plate heat exchanger 15 and detects the temperature at the outlet of the main flow path. The third temperature sensor 21 is provided in the outdoor unit of the air conditioner 1, and detects an outdoor ambient temperature. The processor 41 is provided in the air conditioner 1, is electrically connected to the auxiliary electronic expansion valve 17, the first temperature sensor 19, the second temperature sensor 20, and the third temperature sensor 21, and is configured to control the auxiliary electronic expansion valve 17 according to the temperatures detected by the first temperature sensor 19, the second temperature sensor 20, and the third temperature sensor 21.
Referring to fig. 3, an embodiment of the present disclosure provides a method for reducing noise of a refrigerant of an air conditioner, including:
and S220, detecting the outdoor environment temperature by the third temperature sensor.
And S230, when the outdoor environment temperature is greater than or equal to the temperature threshold value, the processor adjusts the opening degree of the auxiliary electronic expansion valve.
By adopting the method for reducing the noise of the air conditioner refrigerant, the air conditioner detects the outdoor environment temperature. When the outdoor environment temperature is higher, the refrigerant flowing out of the outdoor heat exchanger and throttled contains more gaseous parts. And throttling the gaseous refrigerant separated from the auxiliary gas-liquid separator by adjusting the opening of the auxiliary electronic expansion valve, so that the plate heat exchanger is cooled to realize secondary supercooling. The gaseous refrigerant enters the outdoor unit through the auxiliary flow path of the plate heat exchanger, so that the gaseous refrigerant sent into the indoor unit by the plate heat exchanger is reduced, and the flowing noise of the gaseous refrigerant in the indoor unit during secondary supercooling of the air conditioner is reduced.
The temperature threshold affects the timing of opening the auxiliary electronic expansion valve, and further affects the gaseous refrigerant flowing into the indoor unit. The temperature threshold is in the range of [20, 35] ° c, preferably, the temperature threshold is 22 ℃, 24 ℃ or 26 ℃.
Referring to fig. 4, another method for reducing noise of a refrigerant of an air conditioner according to an embodiment of the present disclosure includes:
and S220, detecting the outdoor environment temperature by the third temperature sensor.
S221, the processor judges whether the outdoor environment temperature is larger than or equal to the temperature threshold value. If yes, go to step S231. If not, go to step S250.
S231, the processor determines the degree of supercooling.
And S232, adjusting the opening degree of the auxiliary electronic expansion valve by the processor according to the supercooling degree, and finishing the control.
And S250, closing the auxiliary electronic expansion valve by the processor.
By adopting the method for reducing the noise of the air-conditioning refrigerant provided by the embodiment of the disclosure, under the condition of low outdoor environment temperature, the refrigerant flowing out of the outdoor heat exchanger and throttled contains less gaseous parts, and the influence of the opening/closing of the auxiliary electronic expansion valve on the noise of the refrigerant flowing in the indoor unit is small. At this time, the auxiliary electronic expansion valve is closed to prolong the service life of the auxiliary electronic expansion valve and the connected pipeline. The supercooling degree can reflect the amount of the gaseous part contained in the refrigerant which flows out of the outdoor heat exchanger and is throttled. The opening of the auxiliary electronic expansion valve is controlled according to the refrigerant quantity of the gaseous part, so that the gaseous refrigerant flowing into the indoor unit can be reduced, and the noise of the flowing of the gaseous refrigerant in the indoor unit during the secondary supercooling of the air conditioner is reduced.
Referring to fig. 5, another method for reducing noise of a refrigerant of an air conditioner according to an embodiment of the present disclosure includes:
and S220, detecting the outdoor environment temperature by the third temperature sensor.
S221, the processor judges whether the outdoor environment temperature is larger than or equal to the temperature threshold value. If yes, go to step S222. If not, go to step S250.
S222, the processor judges whether the auxiliary electronic expansion valve is closed. If yes, go to step S223. If not, go to step S231.
And S223, the processor opens the auxiliary electronic expansion valve.
S224, the processor adjusts the opening degree of the auxiliary electronic expansion valve to a reference opening degree.
And S225, judging whether the opening time of the auxiliary electronic expansion valve reaches the set time by the processor. If yes, go to step S231. If not, the process returns to step S225.
S231, the processor determines the degree of supercooling.
And S232, adjusting the opening degree of the auxiliary electronic expansion valve by the processor according to the supercooling degree, and finishing the control.
And S250, closing the auxiliary electronic expansion valve by the processor.
By adopting the method for reducing the noise of the air-conditioning refrigerant provided by the embodiment of the disclosure, the electronic expansion valve is assisted to operate for the set time according to the standard opening degree, and the adaptation of the standard opening degree to the gaseous refrigerant circulation in the initial stage is realized. The reference opening degree can reduce the possibility of the gaseous refrigerant returning to the indoor unit so as to reduce the flowing noise of the gaseous refrigerant in the indoor unit when the air conditioner is secondarily supercooled.
The opening degree of the auxiliary electronic expansion valve, 480pls, in the disclosed embodiment corresponds to an opening degree of 100%.
The reference opening degree influences the stability of the initial operation of the auxiliary flow path of the plate heat exchanger, and the reference opening degree is a smaller value so as to reduce the possibility that the gaseous refrigerant returns to the indoor unit. The reference opening degree is in the range of [24, 72] pls, and preferably, the reference opening degree is in the range of 36pls, 48pls or 60 pls.
The reference opening degree can also be determined according to the outdoor environment temperature, and specifically comprises the following steps: the processor determines a reference opening degree corresponding to the outdoor environment temperature according to the outdoor environment temperature. Therefore, the capacity of secondary supercooling of the air conditioner in the initial operation stage can be improved, and the flowing noise of the gaseous refrigerant in the indoor unit can be reduced.
When the temperature threshold is 24 ℃, the corresponding relationship between the outdoor ambient temperature and the reference opening degree of the auxiliary electronic expansion valve is shown in table 1:
TABLE 1
Figure BDA0003421003700000071
The setting time is the time of the initial operation of the auxiliary flow path of the plate heat exchanger, and influences the stability of the initial operation. The setting time is in the range of [10, 60] s, preferably 20s, 30s or 40 s.
Referring to fig. 6, another method for reducing noise of air-conditioning refrigerant according to an embodiment of the present disclosure includes:
and S220, detecting the outdoor environment temperature by the third temperature sensor.
And S233, detecting the temperature of the pipeline in the middle of the outdoor heat exchanger by the first temperature sensor under the condition that the outdoor environment temperature is greater than or equal to the temperature threshold value.
And S234, detecting the temperature of the outlet of the main flow passage of the plate heat exchanger by the second temperature sensor.
And S235, determining the difference between the temperature of the middle pipeline and the temperature of the outlet as the supercooling degree by the processor.
And S236, determining the target opening degree of the auxiliary electronic expansion valve corresponding to the supercooling degree by the processor according to the supercooling degree.
In step S237, the processor adjusts the opening degree of the auxiliary electronic expansion valve to the target opening degree, and returns to step S220.
By adopting the method for reducing the noise of the air-conditioning refrigerant, the supercooling degree is determined according to the temperature of the middle pipeline and the temperature of the main pipeline outlet, and the accuracy of determining the supercooling degree is high. The target opening degree of the auxiliary electronic expansion valve is determined in a table look-up mode, and the target opening degree can adapt to different supercooling degrees so as to reduce the flowing noise of the gaseous refrigerant in the indoor unit during secondary supercooling of the air conditioner.
The correspondence between the supercooling degree and the target opening degree of the auxiliary electronic expansion valve is shown in table 2:
TABLE 2
Figure BDA0003421003700000081
Optionally, the processor in step S232 adjusts the opening degree of the auxiliary electronic expansion valve according to the supercooling degree, including: the processor determines the target opening degree of the auxiliary electronic expansion valve according to the supercooling degree and the current opening degree of the auxiliary electronic expansion valve. The processor adjusts the opening degree of the auxiliary electronic expansion valve to a target opening degree. Therefore, the current opening degree of the auxiliary electronic expansion valve is adjusted according to the supercooling degree, and the target opening degree is determined more accurately so as to reduce the flowing noise of the gaseous refrigerant in the indoor unit.
Referring to fig. 7, another method for reducing noise of air-conditioning refrigerant according to an embodiment of the present disclosure includes:
and S220, detecting the outdoor environment temperature by the third temperature sensor.
And S233, detecting the temperature of the pipeline in the middle of the outdoor heat exchanger by the first temperature sensor under the condition that the outdoor environment temperature is greater than or equal to the temperature threshold value.
And S234, detecting the temperature of the outlet of the main flow passage of the plate heat exchanger by the second temperature sensor.
And S235, determining the difference between the temperature of the middle pipeline and the temperature of the outlet as the supercooling degree by the processor.
S238, the processor judges whether the supercooling degree is less than a first set threshold value. If yes, go to step S241. If not, go to step S239.
And S239, judging whether the supercooling degree is larger than a second set threshold value by the processor. If yes, go to step S242. If not, go to step S243.
S241, the processor determines the target opening degree of the auxiliary electronic expansion valve as Yn＝Yn-1+α1and/A, and performs step S244.
S242, the processor determines the target opening degree of the auxiliary electronic expansion valve as Yn＝Yn-1-A/α2And step S244 is performed.
S243, the processor determines the target opening degree of the auxiliary electronic expansion valve as the current opening degree.
In step S244, the processor adjusts the opening degree of the auxiliary electronic expansion valve to the target opening degree, and returns to step S220.
Wherein, YnTo assist the target opening degree of the electronic expansion valve, Yn-1For auxiliary electronic expansion valvesOpening degree, A is supercooling degree, alpha1Is a first supercooling degree conversion coefficient, alpha2Is the second subcooling coefficient.
By adopting the method for reducing the noise of the air-conditioning refrigerant, provided by the embodiment of the disclosure, the supercooling degree is large, and the opening degree of the auxiliary electronic expansion valve is reduced, so that the supercooling degree is reduced. The supercooling degree is small, and the opening degree of the auxiliary electronic expansion valve is increased, so that the supercooling degree is improved. The supercooling degree is maintained in a target range by adjusting the opening degree of the auxiliary electronic expansion valve so as to improve the refrigerating capacity of the air conditioner. When the opening of the auxiliary electronic expansion valve is adjusted according to the supercooling degree, the gaseous refrigerant can be sent to the outdoor unit as much as possible, so that the flowing noise of the gaseous refrigerant in the indoor unit is reduced.
In the formula for calculating the target opening degree of the auxiliary electronic expansion valve provided by the embodiment of the disclosure, variables in the formula only represent numerical values and do not contain units.
The first set threshold value is related to the supercooling degree and influences the secondary supercooling capacity of the air conditioner. The value range of the first set threshold is [22.5, 23.5 ]]DEG C, preferably, alpha1The value is 22.8 ℃, 23 ℃ or 23.2 ℃.
And the second set threshold value is related to the supercooling degree and influences the secondary supercooling capacity of the air conditioner. The value range of the second set threshold is [24.5, 25.5 ]]DEG C, preferably, alpha1The value is 24.8 ℃, 25 ℃ or 25.2 ℃.
First supercooling degree conversion coefficient alpha1The speed of change of the target opening degree of the auxiliary electronic expansion valve is affected. Alpha is alpha1Has a value range of [20, 28 ]]Preferably, alpha1The value is 22, 24 or 26.
Second supercooling degree conversion coefficient alpha2The speed of change of the target opening degree of the auxiliary electronic expansion valve is affected. Alpha is alpha2Has a value range of [7, 13 ]]Preferably, alpha2The value is 8, 10 or 12.
Optionally, the processor determining the target opening degree of the auxiliary electronic expansion valve according to the supercooling degree and the current opening degree of the auxiliary electronic expansion valve includes: y isn＝Yn-1+(Ab-A)/α3. Wherein, YnFor auxiliary electronic expansion valvesTarget opening degree, Yn-1To assist the current opening degree of the electronic expansion valve, AbThe degree of supercooling is taken as a reference, A is the degree of supercooling, alpha3Is the third subcooling coefficient. Therefore, the auxiliary electronic expansion valve can adjust the supercooling degree to be close to the reference supercooling degree, the secondary supercooling capacity of the air conditioner is improved, and the flowing noise of the gaseous refrigerant in the indoor unit is reduced.
Reference supercooling degree AbThe reference value of the supercooling degree adjustment influences the refrigerating capacity of the air conditioner. A. thebHas a value range of [23, 25 ]]Preferably, A isbThe value is 23.5 ℃, 24 ℃ or 24.5 ℃.
Third supercooling degree conversion coefficient alpha3The speed of change of the target opening degree of the auxiliary electronic expansion valve is affected. Alpha is alpha3Has a value range of [16, 20 ]]Preferably, alpha3Taking the value 17, 18 or 19.
Referring to fig. 8, an apparatus for reducing noise of an air conditioning refrigerant according to an embodiment of the present disclosure includes a processor (processor)41 and a memory (memory) 42. Optionally, the apparatus may further include a Communication Interface (Communication Interface)43 and a bus 44. The processor 41, the communication interface 43, and the memory 42 may communicate with each other via a bus 44. The communication interface 43 may be used for information transfer. The processor 41 may call the logic instructions in the memory 42 to execute the method for reducing noise of the air conditioning refrigerant according to the above embodiment.
Furthermore, the logic instructions in the memory 42 may be implemented in software functional units and stored in a computer readable storage medium when sold or used as a stand-alone product.
The memory 42 is a storage medium and can be used for storing software programs, computer executable programs, such as program instructions/modules corresponding to the methods in the embodiments of the present disclosure. The processor 41 executes functional applications and data processing by executing program instructions/modules stored in the memory 42, that is, implements the method for reducing noise of air-conditioning refrigerant in the above embodiments.
The memory 42 may include a storage program area and a storage data area, wherein the storage program area may store an operating system, an application program required for at least one function; the storage data area may store data created according to the use of the terminal device, and the like. Further, the memory 42 may include a high speed random access memory and may also include a non-volatile memory.
The embodiment of the disclosure provides an air conditioner, which comprises the device for reducing the noise of the air conditioner refrigerant.
The embodiment of the disclosure provides a storage medium storing computer-executable instructions configured to perform the method for reducing noise of air conditioner refrigerants.
The storage medium described above may be a transitory computer-readable storage medium or a non-transitory computer-readable storage medium.
The technical solution of the embodiments of the present disclosure may be embodied in the form of a software product, where the computer software product is stored in a storage medium and includes one or more instructions to enable 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 of the embodiments of the present disclosure. And the aforementioned storage medium may be a non-transitory storage medium comprising: 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, and may also be a transient storage medium.
The above description and drawings sufficiently illustrate embodiments of the disclosure to enable those skilled in the art to practice them. Other embodiments may incorporate structural, logical, electrical, process, and other changes. The examples merely typify possible variations. Individual components and functions are optional unless explicitly required, and the sequence of operations may vary. Portions and features of some embodiments may be included in or substituted for those of others. Furthermore, the words used in the specification are words of description only and are not intended to limit the claims. As used in the description of the embodiments and the claims, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. Similarly, the term "and/or" as used in this application is meant to encompass any and all possible combinations of one or more of the associated listed. Furthermore, the terms "comprises" and/or "comprising," when used in this application, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof. Without further limitation, an element defined by the phrase "comprising an …" does not exclude the presence of other like elements in a process, method or apparatus that comprises the element. In this document, each embodiment may be described with emphasis on differences from other embodiments, and the same and similar parts between the respective embodiments may be referred to each other. For methods, products, etc. of the embodiment disclosures, reference may be made to the description of the method section for relevance if it corresponds to the method section of the embodiment disclosure.
Those of skill in the art would appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software may depend upon the particular application and design constraints imposed on the solution. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the disclosed embodiments. It can be clearly understood by the skilled person that, for convenience and brevity of description, the specific working processes of the system, the apparatus and the unit described above may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.
In the embodiments disclosed herein, the disclosed methods, products (including but not limited to devices, apparatuses, etc.) may be implemented in other ways. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the units may be merely a logical division, and in actual implementation, there may be another division, for example, multiple units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form. 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 units can be selected according to actual needs to implement the present embodiment. In addition, functional units in the embodiments of the present disclosure may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit.
The flowchart and block diagrams in the figures illustrate the architecture, functionality, and operation of possible implementations of systems, methods and computer program products according to embodiments of the present disclosure. In this regard, each block in the flowchart or block diagrams may represent a module, segment, or portion of code, which comprises one or more executable instructions for implementing the specified logical function(s). In some alternative implementations, the functions noted in the block may occur out of the order noted in the figures. For example, two blocks shown in succession may, in fact, be executed substantially concurrently, or the blocks may sometimes be executed in the reverse order, depending upon the functionality involved. In the description corresponding to the flowcharts and block diagrams in the figures, operations or steps corresponding to different blocks may also occur in different orders than disclosed in the description, and sometimes there is no specific order between the different operations or steps. For example, two sequential operations or steps may in fact be executed substantially concurrently, or they may sometimes be executed in the reverse order, depending upon the functionality involved. Each block of the block diagrams and/or flowchart illustrations, and combinations of blocks in the block diagrams and/or flowchart illustrations, can be implemented by special purpose hardware-based systems that perform the specified functions or acts, or combinations of special purpose hardware and computer instructions.

Claims (10)

1. A method for reducing noise of refrigerant of an air conditioner is characterized in that the air conditioner comprises an auxiliary gas-liquid separator for separating the refrigerant flowing out of an outdoor heat exchanger and throttled into gas state and liquid state, a plate heat exchanger for secondary supercooling and an auxiliary electronic expansion valve, wherein a main flow path of the plate heat exchanger sends the liquid refrigerant to an indoor unit, and the auxiliary flow path sends the gas refrigerant throttled by the auxiliary electronic expansion valve to an outdoor unit, and the method comprises the following steps:
detecting the outdoor environment temperature;
and adjusting the opening degree of the auxiliary electronic expansion valve when the outdoor environment temperature is greater than or equal to the temperature threshold value.
2. The method of claim 1, wherein adjusting the opening degree of the auxiliary electronic expansion valve comprises:
determining the supercooling degree;
and adjusting the opening degree of the auxiliary electronic expansion valve according to the supercooling degree.
3. The method of claim 2, wherein determining a degree of subcooling comprises:
detecting the temperature of a pipeline in the middle of the outdoor heat exchanger;
detecting the temperature of an outlet of a main flow path of the plate heat exchanger;
and determining the difference between the temperature of the middle pipeline and the temperature of the outlet as the supercooling degree.
4. The method of claim 2, wherein adjusting the opening degree of the auxiliary electronic expansion valve according to the supercooling degree comprises:
determining a target opening degree of the auxiliary electronic expansion valve corresponding to the supercooling degree according to the supercooling degree;
the opening degree of the auxiliary electronic expansion valve is adjusted to a target opening degree.
5. The method of claim 2, wherein adjusting the opening degree of the auxiliary electronic expansion valve according to the supercooling degree comprises:
determining a target opening degree of the auxiliary electronic expansion valve according to the supercooling degree and the current opening degree of the auxiliary electronic expansion valve;
the opening degree of the auxiliary electronic expansion valve is adjusted to a target opening degree.
6. The method of claim 5, wherein determining the target opening degree of the auxiliary electronic expansion valve based on the subcooling degree and the current opening degree of the auxiliary electronic expansion valve comprises:
under the condition that the supercooling degree is less than a first set threshold value, determining the target opening degree of the auxiliary electronic expansion valve as Yn＝Yn-1+α1/A；
Determining the target opening degree of the auxiliary electronic expansion valve as Y under the condition that the supercooling degree is greater than a second set threshold valuen＝Yn-1-A/α2；
Determining the target opening degree of the auxiliary electronic expansion valve as the current opening degree under the condition that the supercooling degree is greater than or equal to a first set threshold value and less than or equal to a second set threshold value;
adjusting the opening degree of the auxiliary electronic expansion valve to a target opening degree;
wherein, YnTo assist the target opening degree of the electronic expansion valve, Yn-1To assist the current opening degree of the electronic expansion valve, A is the supercooling degree, alpha1Is a first supercooling degree conversion coefficient, alpha2Is the second subcooling coefficient.
7. The method of any of claims 1 to 6, further comprising:
and closing the auxiliary electronic expansion valve under the condition that the outdoor environment temperature is less than the temperature threshold value.
8. An apparatus for reducing noise of air conditioning refrigerant, comprising a processor and a memory storing program instructions, wherein the processor is configured to execute the method for reducing noise of air conditioning refrigerant according to any one of claims 1 to 7 when executing the program instructions.
9. An air conditioner, comprising:
an outdoor heat exchanger (12);
one end of the main electronic expansion valve (13) is connected with one end of the outdoor heat exchanger (12);
an auxiliary gas-liquid separator (14) with an inlet connected to the other end of the main electronic expansion valve (13);
the plate heat exchanger (15) comprises a main flow path and an auxiliary flow path, wherein one end of the main flow path is connected with a liquid outlet of the auxiliary gas-liquid separator (14), the other end of the main flow path conveys liquid refrigerant to an indoor unit, and one end of the auxiliary flow path conveys gaseous refrigerant to an outdoor unit;
one end of the auxiliary electronic expansion valve (17) is connected with the air outlet of the auxiliary gas-liquid separator (14), and the other end of the auxiliary electronic expansion valve is connected with the other end of the auxiliary flow path of the plate heat exchanger (15); and the combination of (a) and (b),
the apparatus of claim 8 for reducing noise of air conditioning refrigerant.
10. A storage medium storing program instructions which, when executed, perform the method for reducing noise in an air conditioning refrigerant according to any one of claims 1 to 7.
CN202111562577.8A 2021-12-20 2021-12-20 Method and device for reducing noise of air conditioner refrigerant, air conditioner and storage medium Active CN114413404B (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115111704A (en) * 2022-07-08 2022-09-27 广东美的制冷设备有限公司 Control method of air conditioner, controller, air conditioner and storage medium
CN115479354A (en) * 2022-10-18 2022-12-16 珠海格力电器股份有限公司 Air conditioner control method and device, air conditioner and storage medium

Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007139244A (en) * 2005-11-16 2007-06-07 Fujitsu General Ltd Refrigeration device
US20110083456A1 (en) * 2008-06-13 2011-04-14 Mitsubishi Electric Corporation Refrigeration cycle device and method of controlling the same
CN103982943A (en) * 2014-04-30 2014-08-13 广东美的暖通设备有限公司 Multi-split air conditioning system
CN106839310A (en) * 2017-02-04 2017-06-13 青岛海尔空调器有限总公司 A kind of control method of air-conditioning, device and air-conditioning
CN106885315A (en) * 2015-12-16 2017-06-23 青岛海尔空调电子有限公司 A kind of air-conditioner
CN107062580A (en) * 2017-03-21 2017-08-18 珠海格力电器股份有限公司 It is a kind of to reduce the control method and multi-gang air-conditioner of noise of indoor unit of air conditioner
CN108361884A (en) * 2018-01-23 2018-08-03 青岛海尔空调电子有限公司 Air-conditioning system
CN111397239A (en) * 2020-03-13 2020-07-10 海信（山东）空调有限公司 Multi-split air conditioning system and method for reducing noise of multi-split air conditioning system
CN111692735A (en) * 2020-06-02 2020-09-22 广东美的制冷设备有限公司 Air conditioner system, control method and device thereof and storage medium
CN112013472A (en) * 2019-05-30 2020-12-01 广东美的制冷设备有限公司 Air conditioner and control method thereof
CN113218035A (en) * 2021-05-14 2021-08-06 宁波奥克斯电气股份有限公司 Control method for multi-split oil return noise reduction, storage medium and multi-split air conditioner

Patent Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007139244A (en) * 2005-11-16 2007-06-07 Fujitsu General Ltd Refrigeration device
US20110083456A1 (en) * 2008-06-13 2011-04-14 Mitsubishi Electric Corporation Refrigeration cycle device and method of controlling the same
CN103982943A (en) * 2014-04-30 2014-08-13 广东美的暖通设备有限公司 Multi-split air conditioning system
CN106885315A (en) * 2015-12-16 2017-06-23 青岛海尔空调电子有限公司 A kind of air-conditioner
CN106839310A (en) * 2017-02-04 2017-06-13 青岛海尔空调器有限总公司 A kind of control method of air-conditioning, device and air-conditioning
CN107062580A (en) * 2017-03-21 2017-08-18 珠海格力电器股份有限公司 It is a kind of to reduce the control method and multi-gang air-conditioner of noise of indoor unit of air conditioner
CN108361884A (en) * 2018-01-23 2018-08-03 青岛海尔空调电子有限公司 Air-conditioning system
CN112013472A (en) * 2019-05-30 2020-12-01 广东美的制冷设备有限公司 Air conditioner and control method thereof
CN111397239A (en) * 2020-03-13 2020-07-10 海信（山东）空调有限公司 Multi-split air conditioning system and method for reducing noise of multi-split air conditioning system
CN111692735A (en) * 2020-06-02 2020-09-22 广东美的制冷设备有限公司 Air conditioner system, control method and device thereof and storage medium
CN113218035A (en) * 2021-05-14 2021-08-06 宁波奥克斯电气股份有限公司 Control method for multi-split oil return noise reduction, storage medium and multi-split air conditioner

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115111704A (en) * 2022-07-08 2022-09-27 广东美的制冷设备有限公司 Control method of air conditioner, controller, air conditioner and storage medium
CN115479354A (en) * 2022-10-18 2022-12-16 珠海格力电器股份有限公司 Air conditioner control method and device, air conditioner and storage medium
CN115479354B (en) * 2022-10-18 2024-05-28 珠海格力电器股份有限公司 Air conditioner control method and device, air conditioner and storage medium

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