CN112066522A - Control method of air conditioner, air conditioner and computer readable storage medium - Google Patents
Control method of air conditioner, air conditioner and computer readable storage medium Download PDFInfo
- Publication number
- CN112066522A CN112066522A CN202010965069.3A CN202010965069A CN112066522A CN 112066522 A CN112066522 A CN 112066522A CN 202010965069 A CN202010965069 A CN 202010965069A CN 112066522 A CN112066522 A CN 112066522A
- Authority
- CN
- China
- Prior art keywords
- air conditioner
- temperature
- heat exchanger
- outdoor heat
- refrigerant
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000000034 method Methods 0.000 title claims abstract description 45
- 239000003507 refrigerant Substances 0.000 claims abstract description 108
- 238000005057 refrigeration Methods 0.000 claims abstract description 25
- 238000001816 cooling Methods 0.000 claims description 26
- 230000000694 effects Effects 0.000 abstract description 8
- 230000009467 reduction Effects 0.000 abstract description 4
- 238000001914 filtration Methods 0.000 description 6
- 239000007788 liquid Substances 0.000 description 5
- 238000004891 communication Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 238000009833 condensation Methods 0.000 description 2
- 230000005494 condensation Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
Images
Classifications
-
- 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
- F24F11/50—Control or safety arrangements characterised by user interfaces or communication
- F24F11/54—Control or safety arrangements characterised by user interfaces or communication using one central controller connected to several sub-controllers
-
- 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
- F24F11/50—Control or safety arrangements characterised by user interfaces or communication
- F24F11/56—Remote control
- F24F11/58—Remote control using Internet communication
-
- 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
- F24F11/62—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
- F24F11/65—Electronic processing for selecting an operating mode
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
- F24F11/80—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air
- F24F11/83—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the supply of heat-exchange fluids to heat-exchangers
- F24F11/84—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling the supply of heat-exchange fluids to heat-exchangers using valves
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
- F24F11/80—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air
- F24F11/86—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling compressors within refrigeration or heat pump circuits
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/70—Control systems characterised by their outputs; Constructional details thereof
- F24F11/80—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air
- F24F11/87—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling absorption or discharge of heat in outdoor units
- F24F11/871—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling absorption or discharge of heat in outdoor units by controlling outdoor fans
-
- 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
Abstract
The invention provides a control method of an air conditioner, the air conditioner and a computer readable storage medium, the air conditioner comprises an outdoor heat exchanger and an indoor heat exchanger, a return pipe is connected in series on a pipeline of a refrigerant flowing from the outdoor heat exchanger to the indoor heat exchanger, the return pipe is communicated with a refrigerant outlet of the outdoor heat exchanger and a refrigerant inlet of the indoor heat exchanger, and the control method of the air conditioner comprises the following steps: when the air conditioner operates in a refrigeration mode, acquiring a difference value between the temperature of a coil pipe of the outdoor heat exchanger and a reference temperature at the position of the clip pipe; and when the difference value meets a preset value, controlling the air conditioner to operate according to a first preset parameter so as to reduce the temperature of the refrigerant flowing through the return pipe. According to the invention, the air conditioner controls the air conditioner to operate according to the first preset parameter so as to reduce the temperature of the refrigerant in the pipe clip, after the temperature is reduced, the gas content in the refrigerant is reduced, the bubble content is lower or no bubble exists when the refrigerant flows, and the phenomenon that the bubble is broken when the refrigerant flows through the reducing position is improved, so that the noise reduction effect can be achieved.
Description
Technical Field
The present invention relates to the field of refrigeration technologies, and in particular, to a control method for an air conditioner, and a computer-readable storage medium.
Background
The refrigerant is a working fluid for absorbing and releasing heat in the air conditioner, and is a key element for realizing the functions of refrigeration and heating of the air conditioner. However, when the amount of heat exchange required indoors is not high, for example, the outdoor environment is below 30 degrees in the cooling mode, the air conditioner is in a low-load operation state at this time, the compressor operates at a low frequency, and the outdoor fan operates at a low rotation speed, and at this time, the operation noise of the compressor and the outdoor fan is reduced, and the flowing noise of the refrigerant is easily highlighted, resulting in a large flowing noise of the refrigerant of the air conditioner.
Disclosure of Invention
The invention mainly aims to provide a control method of an air conditioner, and aims to solve the problem that the flowing noise of a refrigerant is high when the air conditioner operates at a low load in the prior art.
In order to achieve the above object, the present invention provides a method for controlling an air conditioner, the air conditioner including an outdoor heat exchanger and an indoor heat exchanger, wherein a pipe for returning refrigerant flowing from the outdoor heat exchanger to the indoor heat exchanger is connected in series to a pipeline, the pipe for returning refrigerant is communicated with a refrigerant outlet of the outdoor heat exchanger and the indoor heat exchanger, the method for controlling the air conditioner including:
when the air conditioner runs in a refrigeration mode, acquiring a difference value between the temperature of a coil of the outdoor heat exchanger and a reference temperature at the position of the return pipe;
and when the difference value meets a preset value, controlling the air conditioner to operate according to a first preset parameter so as to reduce the temperature of the refrigerant flowing through the return pipe.
Further, the step of controlling the operation of the air conditioner according to the first preset parameter comprises:
and controlling an outdoor fan corresponding to the outdoor heat exchanger to increase a preset rotating speed.
Further, a pipeline between the outdoor heat exchanger and the indoor heat exchanger is further connected with an electronic expansion valve, and the step of controlling the operation of the air conditioner according to a first preset parameter comprises the following steps:
and controlling the electronic expansion valve to increase the preset opening degree.
Further, when the air conditioner operates in the cooling mode, the step of obtaining the difference value between the coil temperature of the outdoor heat exchanger and the reference temperature at the position of the loop pipe comprises the following steps:
when the air conditioner operates in a refrigeration mode, acquiring the working frequency of a compressor;
when the working frequency is lower than or equal to a preset frequency, the step of obtaining the difference value between the coil temperature of the outdoor heat exchanger and the reference temperature at the position of the return pipe is executed.
Further, when the air conditioner operates in the cooling mode, the step of obtaining the difference value between the coil temperature of the outdoor heat exchanger and the reference temperature at the position of the loop pipe comprises the following steps:
when the air conditioner operates in a refrigeration mode, acquiring indoor and outdoor temperature difference;
and when the indoor and outdoor temperature difference is lower than or equal to a first preset temperature difference, executing the step of acquiring the difference between the temperature of the coil pipe of the outdoor heat exchanger and the reference temperature at the position of the return pipe.
Further, when the air conditioner operates in the cooling mode, the step of obtaining the difference value between the coil temperature of the outdoor heat exchanger and the reference temperature at the position of the loop pipe comprises the following steps:
when the air conditioner operates in a refrigeration mode, acquiring the refrigeration capacity of the air conditioner;
and when the refrigerating capacity is lower than or equal to a preset refrigerating capacity, executing the step of acquiring the difference value between the temperature of the coil pipe of the outdoor heat exchanger and the reference temperature at the position of the return pipe.
Further, when the difference value satisfies a preset value, after the step of controlling the operation of the air conditioner according to a first preset parameter to reduce the temperature of the refrigerant flowing through the return pipe, the method further includes:
acquiring the current indoor temperature and the set temperature of the air conditioner;
and when the difference value between the current indoor temperature and the set temperature is greater than or equal to a second preset temperature difference, controlling the air conditioner to operate according to a second preset parameter so as to improve the temperature of the refrigerant flowing through the return pipe.
Further, the air conditioner further comprises a first filter screen, a second filter screen and a temperature sensor, the first filter screen is arranged at a refrigerant inlet of the returning pipe to filter bubbles of the refrigerant flowing into the returning pipe, the second filter screen is arranged at a refrigerant outlet of the returning pipe to filter bubbles of the refrigerant flowing out of the returning pipe, the temperature sensor is arranged on the returning pipe and in the flowing direction of the refrigerant, and the temperature sensor is positioned at the downstream of the second filter screen to detect the reference temperature at the position of the returning pipe.
In order to achieve the above object, the present invention further provides an air conditioner, which includes a memory, a processor, and a control program of the air conditioner stored in the memory and operable on the processor, wherein the control program of the air conditioner, when executed by the processor, implements the steps of the control method of the air conditioner according to any one of the above aspects.
To achieve the above object, the present invention also provides a computer-readable storage medium having a control program of an air conditioner stored thereon, which when executed by a processor, implements the steps of the control method of the air conditioner as described in any one of the above.
According to the control method of the air conditioner, the air conditioner and the computer readable storage medium, when the air conditioner operates in a refrigeration mode, the difference value between the temperature of the coil of the outdoor heat exchanger and the reference temperature at the position of the loop pipe is obtained, and when the difference value meets a preset value, the air conditioner is controlled to operate according to a first preset parameter so as to reduce the temperature of a refrigerant flowing through the loop pipe. When the difference value meets the preset value, the air conditioner controls the air conditioner to operate according to the first preset parameter so that the temperature of the refrigerant in the pipe clip is reduced, after the temperature is reduced, the gas content in the refrigerant is reduced, the gas bubble content is low or no gas bubble exists when the refrigerant flows, and when the refrigerant flows through the reducing position, the phenomenon that the gas bubble is broken by extrusion is improved, so that the noise reduction effect can be achieved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.
Fig. 1 is a schematic diagram of a hardware operating environment of a terminal related to a control method of an air conditioner according to the present invention;
FIG. 2 is a system diagram of the air conditioner of the present invention;
FIG. 3 is a schematic view of a looped duct of the air conditioner of the present invention;
FIG. 4 is a flowchart illustrating a control method of an air conditioner according to a first embodiment of the present invention;
FIG. 5 is a flowchart illustrating a control method of an air conditioner according to a second embodiment of the present invention;
FIG. 6 is a flow chart illustrating a control method of an air conditioner according to a third embodiment of the present invention
Fig. 7 is a flowchart illustrating a control method of an air conditioner according to a fourth embodiment of the present invention.
The reference numbers illustrate:
| reference numerals | Name (R) | Reference numerals | Name (R) |
| 10 | |
60 | |
| 20 | |
70 | |
| 31 | |
1001 | Processor with a memory having a plurality of |
| 32 | |
1002 | |
| 40 | Compressor with a compressor housing having a plurality of |
1003 | |
| 50 | |
1004 | Outdoor fan |
The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.
Detailed Description
It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
The invention provides a control method of an air conditioner, the air conditioner comprises an outdoor heat exchanger and an indoor heat exchanger, a return pipe is connected in series on a pipeline of a refrigerant flowing from the outdoor heat exchanger to the indoor heat exchanger, the return pipe is communicated with a refrigerant outlet of the indoor heat exchanger and the indoor heat exchanger, and the control method of the air conditioner comprises the following steps: when the air conditioner runs in a refrigeration mode, acquiring a difference value between the temperature of a coil of the outdoor heat exchanger and a reference temperature at the position of the return pipe; and when the difference value meets a preset value, controlling the air conditioner to operate according to a first preset parameter so as to reduce the temperature of the refrigerant flowing through the return pipe.
As shown in fig. 1, fig. 1 is a schematic diagram of a hardware operating environment of a terminal according to an embodiment of the present invention.
The terminal of the embodiment of the invention comprises but is not limited to an air conditioner and an air conditioner.
As shown in fig. 1, fig. 1 is a schematic diagram of a hardware operating environment of a terminal according to an embodiment of the present invention.
Referring to fig. 1, the terminal may include: the processor 1001, for example, a CPU, a memory 1002, a communication bus 1003, and an outdoor fan 1004. The communication bus 1003 is used for implementing connection communication between the components in the terminal. The memory 1002 may be a high-speed RAM memory or a non-volatile memory (e.g., a disk memory). The memory 1002 may alternatively be a storage device separate from the processor 1001.
Those skilled in the art will appreciate that the configuration of the terminal shown in fig. 1 is not intended to be limiting and may include more or fewer components than those shown, or some components may be combined, or a different arrangement of components.
As shown in fig. 1, the memory 1002, which is a kind of computer storage medium, may include a control program of an air conditioner therein, and the processor 1001 may be configured to call the control program of the air conditioner stored in the memory 1002 and perform the following operations:
when the air conditioner operates in a refrigeration mode, acquiring a difference value between the temperature of a coil of the outdoor heat exchanger and a reference temperature at the position of the return pipe 10;
and when the difference value meets a preset value, controlling the air conditioner to operate according to a first preset parameter so as to reduce the temperature of the refrigerant flowing through the return pipe.
Further, the processor 1001 may be configured to call a control program of the air conditioner stored in the memory 1002, and perform the following operations:
and controlling an outdoor fan corresponding to the outdoor heat exchanger to increase a preset rotating speed.
Further, the processor 1001 may be configured to call a control program of the air conditioner stored in the memory 1002, and perform the following operations:
and controlling the electronic expansion valve to increase the preset opening degree.
Further, the processor 1001 may be configured to call a control program of the air conditioner stored in the memory 1002, and perform the following operations:
when the air conditioner operates in a refrigeration mode, acquiring the working frequency of a compressor;
the step of obtaining a difference between the coil temperature of the outdoor heat exchanger 50 and the reference temperature at the position of the loop pipe is performed when the operating frequency is lower than or equal to a preset frequency.
Further, the processor 1001 may be configured to call a control program of the air conditioner stored in the memory 1002, and perform the following operations:
when the air conditioner runs in a cooling mode, the step of obtaining the difference value between the coil temperature of the outdoor heat exchanger and the reference temperature at the position of the loop pipe comprises the following steps:
when the air conditioner operates in a refrigeration mode, acquiring indoor and outdoor temperature difference;
and when the indoor and outdoor temperature difference is lower than or equal to a first preset temperature difference, executing the step of acquiring the difference between the temperature of the coil pipe of the outdoor heat exchanger and the reference temperature at the position of the return pipe.
Further, the processor 1001 may be configured to call a control program of the air conditioner stored in the memory 1002, and perform the following operations:
when the air conditioner runs in a cooling mode, the step of obtaining the difference value between the coil temperature of the outdoor heat exchanger and the reference temperature at the position of the loop pipe comprises the following steps:
when the air conditioner operates in a refrigeration mode, acquiring the refrigeration capacity of the air conditioner;
and when the refrigerating capacity is lower than or equal to a preset refrigerating capacity, executing the step of acquiring the difference value between the temperature of the coil pipe of the outdoor heat exchanger and the reference temperature at the position of the return pipe.
Further, the processor 1001 may be configured to call a control program of the air conditioner stored in the memory 1002, and perform the following operations:
acquiring the current indoor temperature and the set temperature of the air conditioner;
and when the difference value between the current indoor temperature and the set temperature is greater than or equal to a second preset temperature difference, controlling the air conditioner to operate according to a second preset parameter so as to improve the temperature of the refrigerant flowing through the return pipe.
As shown in fig. 3, the air conditioner further includes a first filter screen 31, a second filter screen 32 and a temperature sensor 20, the first filter screen 31 is disposed at a refrigerant inlet of the loop pipe 10 to filter bubbles of the refrigerant flowing into the loop pipe 10, the second filter screen 32 is disposed at a refrigerant outlet of the loop pipe 10 to filter bubbles of the refrigerant flowing out of the loop pipe 10, and the temperature sensor 20 is disposed on the loop pipe 10, and the temperature sensor 20 is located at a downstream of the second filter screen 32 in a flowing direction of the refrigerant to detect the reference temperature at the position of the loop pipe 10.
As shown in fig. 2, the air conditioner further includes an outdoor heat exchanger 50 and an indoor heat exchanger 60, the indoor heat exchanger 60 and the outdoor heat exchanger 50 are communicated with each other by a refrigerant pipe to form an indoor/outdoor refrigerant passage, the indoor/outdoor refrigerant passage further includes a throttling device 70 and a loop pipe 10, the loop pipe 10 can be set in a spiral shape or a U shape to increase a flow path of the refrigerant in the loop pipe 10, so as to increase a heat exchange amount between the refrigerant in the loop pipe 10 and the outside air, so that the temperature of the refrigerant gradually decreases when the refrigerant flows through the loop pipe 10, under a condition that a load of the outdoor heat exchanger 50 is low, condensation of the refrigerant in the outdoor heat exchanger 50 is often insufficient, a part of gaseous refrigerant also exists when the refrigerant flows out of the outdoor heat exchanger 50, the loop pipe 10 is set to cool the gaseous refrigerant from a gaseous state to a liquid state in the loop pipe 10, so as to reduce a gas amount in the entire indoor/outdoor refrigerant, thereby avoiding the noise caused by the broken bubbles of the refrigerant at the change position of the pipeline (such as flowing into the capillary tube or flowing out of the capillary tube). It can be understood that the smaller the diameter of the loop pipe 10 is, the more beneficial the refrigerant to exchange heat and reduce pressure, so as to make the gas-liquid refrigerant fully mixed, therefore, the diameter of the loop pipe 10 can be set to 5-7mm, and any value in this range can be used as the diameter of the loop pipe 10, such as 6mm, 6.5mm, but not by way of example. In order to reduce the refrigerant gas content in the indoor and outdoor refrigerant passages as much as possible, the refrigerant inlet of the hollow square-shaped pipe 10 is directly inserted into the outdoor heat exchanger 50 and connected to the refrigerant outlet of the outdoor heat exchanger 50.
As shown in fig. 3, a temperature sensor 20 may be disposed on the loop pipe 10 for detecting the temperature of the loop pipe 10, and the temperature sensor 20 may be mounted at an end of the loop pipe 10 close to the outlet of the refrigerant, so that the heat exchange effect of the refrigerant in the loop pipe 10 may be known according to the temperature difference between the coil of the outdoor heat exchanger 50 and the temperature of the loop pipe 10 detected by the temperature sensor 20, the larger the temperature difference is, the better the heat exchange effect of the refrigerant in the loop pipe 10 is, the lower the gas content of the refrigerant is, the smaller the flow noise is, and conversely, the smaller the temperature difference is, the poorer the heat exchange effect of the refrigerant in the loop pipe 10 is, the higher the gas content of the refrigerant is, and the larger the flow noise is.
In order to further improve the noise reduction effect, a filtering device can be further arranged in the square-wave tube 10, the filtering device can be a simple filter screen or a filter specially applied to the refrigerant filtration, one or more filtering devices can be arranged, for example, two filter screens are arranged, the first filter screen 31 and the second filter screen 32 can be respectively positioned at the refrigerant inlet and the refrigerant outlet of the square-wave tube 10, bubbles (the form of gaseous refrigerant in liquid refrigerant) are filtered by the first filter screen 31 and the second filter screen 32 when passing through the first filter screen 31 and the second filter screen 32, or are crushed by the filtering device, so that the number of bubbles in the refrigerant is reduced, the bubble content is lower or no bubbles when the refrigerant flows, the phenomenon that the bubbles are crushed when the refrigerant flows through the reducing position is improved, so that the noise reduction effect can be achieved, and impurities in the refrigerant can be filtered by the filtering device, the flow path maintenance of the air conditioner is facilitated, and the working performance of the air conditioner is stable.
Based on the above structural features, as shown in fig. 4 and referring to fig. 1-3, the present invention provides a first embodiment of a method for controlling an air conditioner:
the air conditioner comprises an outdoor heat exchanger and an indoor heat exchanger, a return pipe 10 is connected in series on a pipeline of a refrigerant flowing from the outdoor heat exchanger 50 to the indoor heat exchanger, the return pipe 10 is communicated with a refrigerant outlet of the indoor heat exchanger 60 and the indoor heat exchanger 60, and the control method of the air conditioner comprises the following steps:
s1: when the air conditioner runs in a refrigeration mode, acquiring a difference value between the temperature of a coil of the outdoor heat exchanger and a reference temperature at the position of the return pipe;
s2: and when the difference value meets a preset value, controlling the air conditioner to operate according to a first preset parameter so as to reduce the temperature of the refrigerant flowing through the return pipe.
The reference temperature is a temperature of the temperature sensor 20 disposed on the loop pipe 10, and may specifically be a temperature of an intermediate position or an outlet position of the loop pipe 10, a coil temperature of the indoor heat exchanger 60 reflects a temperature of a refrigerant when the indoor heat exchanger 60 condenses, the refrigerant flows out of the outdoor heat exchanger 50 and then enters the loop pipe 10, and exchanges heat with an external environment in the loop pipe 10, so that the coil temperature of the outdoor heat exchanger 50 is inevitably greater than the reference temperature at the position of the loop pipe 10 in the cooling mode, that is, the coil temperature of the outdoor heat exchanger 50 is inevitably greater than the reference temperature at the position of the loop pipe 10 in the cooling mode, and a difference between the coil temperature of the outdoor heat exchanger 50 and the reference temperature at the position of the loop pipe 10 is positive.
The difference between the coil temperature of the outdoor heat exchanger 50 and the reference temperature at the position of the loop pipe 10 reflects the heat exchange condition of the refrigerant in the loop pipe 10, the larger the difference is, the larger the heat exchange amount between the refrigerant and the outside air is, the smaller the difference is, the smaller the heat exchange amount between the refrigerant and the outside air is, and for the condition that the gas content in the refrigerant is too high, the larger the difference is, the more the gas is converted into liquid, and the flowing noise of the refrigerant is lower, therefore, when the difference does not meet the preset value, the air conditioner needs to be controlled to operate according to the first preset parameter to reduce the temperature of the refrigerant flowing through the loop pipe 10, reduce the content of the gas refrigerant in the loop pipe 10, and further reduce the flowing noise of the refrigerant. The first preset parameter is an air conditioner adjustment value corresponding to the difference value stored in the memory, and specifically may be an adjustment value for an operating frequency of the compressor 40, an adjustment value for a rotational speed of the outdoor fan, an adjustment value for an opening degree of the electronic expansion valve, or the like. The condition that the difference value in this embodiment satisfies the preset value specifically includes: the preset value is a temperature range, and when the temperature difference exceeds the temperature range, for example, below 5 degrees or below 8 degrees, the air conditioner controls the air conditioner to operate according to a first preset parameter to reduce the temperature of the refrigerant in the return pipe 10. In this embodiment, the preset value may be any value between 0 and 10 degrees.
In the cooling mode, when the temperature of the external environment is low, for example, lower than 30 ℃, the user often adjusts the set temperature of the air conditioner to a temperature value which is not much different from the external temperature, for example, the set temperature of the air conditioner is set to 27 ℃, or the old or the child is present indoors, even if the external temperature is high, the user may set the set temperature of the air conditioner to be higher, at this time, the compressor 40 and the outdoor fan both operate at low load, the generated refrigerating capacity is not large, and at this time, the gaseous refrigerant often insufficiently condenses in the outdoor heat exchanger 50, in this embodiment, when the difference value satisfies the preset value, the operation of the air conditioner is controlled according to the first preset parameter to reduce the temperature of the refrigerant in the pipe 10, after the temperature is reduced, the gas content in the refrigerant is reduced, the bubble content is low or no bubble when the refrigerant flows, and when the refrigerant flows through the reducing position, the phenomenon that the bubble is broken is improved, thereby the effect of making an uproar can be reached.
Based on the first embodiment described above, as shown in fig. 5, the control method of the air conditioner of the present invention also proposes a second embodiment:
the step of controlling the operation of the air conditioner according to the first preset parameter comprises the following steps:
s21: and controlling an outdoor fan corresponding to the outdoor heat exchanger to increase a preset rotating speed.
In this embodiment, when the difference value satisfies the preset value, the outdoor fan corresponding to the outdoor heat exchanger 50 is controlled to increase the air speed, and the rotation speed of the outdoor fan is increased to facilitate condensation of the refrigerant in the outdoor heat exchanger 50, so that more refrigerants are condensed from a gaseous state into a liquid state in the outdoor heat exchanger 50, thereby reducing the content of the gaseous refrigerant flowing into the loop pipe 10, and the content of the gaseous refrigerant in the loop pipe 10 is low, so that the flow noise is reduced. The preset rotation speed is the rotation speed adjustment value of the outdoor fan corresponding to different difference values stored in the memory, each preset rotation speed corresponds to a difference range, for example, when the coil temperature of the outdoor heat exchanger 50 is 33 degrees, the reference temperature at the position of the loop pipe 10 is 30 degrees, at this time, the difference value between the coil temperature of the outdoor heat exchanger 50 and the reference temperature at the position of the loop pipe 10 is 3 degrees, 3 degrees is in the temperature range of 2-3 degrees, and the corresponding outdoor fan adjustment value in the temperature range of 2-3 degrees is 100r, at this time, the rotation speed of the outdoor fan is increased by 100 r.
Based on the first embodiment, in an embodiment, the pipeline between the outdoor heat exchanger 50 and the indoor heat exchanger 60 is further connected with an electronic expansion valve, and the step of controlling the operation of the air conditioner according to the first preset parameter includes:
and controlling the electronic expansion valve to increase the preset opening degree.
The electronic expansion valve is installed at the refrigerant inlet of the indoor heat exchanger 60, and when the compressor 40 operates at a low frequency and the outdoor fan operates at a low rotation, the opening degree of the electronic expansion valve is smaller, and when the refrigerant flows through the electronic expansion valve, the circulation is disordered due to the small aperture. In this embodiment, after the opening of the electronic expansion valve is increased, the turbulence of the refrigerant flowing through the electronic expansion valve is improved, so as to reduce noise. It can be understood that when the difference value meets the preset value, the opening degree of the electronic expansion valve can be increased, and the rotating speed of the outdoor fan is also increased. The preset opening value added by the expansion valve corresponds to a temperature interval in which the difference between the coil temperature of the outdoor heat exchanger 50 and the reference temperature at the position of the loop pipe 10 is located, and different temperature intervals correspond to different preset opening values.
Based on the first embodiment described above, as shown in fig. 6, the control method of the air conditioner of the present invention also proposes a third embodiment:
the step of obtaining the difference between the coil temperature of the outdoor heat exchanger 50 and the reference temperature at the position of the loop pipe 10 when the air conditioner operates in the cooling mode comprises the following steps:
s3: when the air conditioner operates in a refrigeration mode, acquiring the working frequency of a compressor;
s11: when the working frequency is lower than or equal to a preset frequency, the step of obtaining the difference value between the coil temperature of the outdoor heat exchanger and the reference temperature at the position of the return pipe is executed.
In the cooling mode, when the temperature of the external environment is low, such as lower than 30 degrees, the user will often adjust the set temperature of the air conditioner to a temperature that is not much different from the external temperature, such as setting the set temperature of the air conditioner to 27 degrees, or having old people or children indoors, even if the outside temperature is high, the user may set the set temperature of the air conditioner to be high, and at this time, the compressor 40 and the outdoor fan are operated at low load, the generated cooling capacity is not large, the rotating speed of the compressor 40 is low, and the refrigerant is likely to generate flow noise, therefore, in the cooling mode, the air conditioner may acquire the operating frequency of the compressor 40 in real time or at regular time, and when it is detected that the operating frequency of the compressor 40 is lower than or equal to the preset frequency, the step of obtaining the difference between the coil temperature of the outdoor heat exchanger 50 and the reference temperature at the position of the loop pipe 10 is performed.
Based on the first embodiment described above, as shown in fig. 7, the control method of the air conditioner of the present invention also proposes a fourth embodiment:
the step of obtaining the difference between the coil temperature of the outdoor heat exchanger 50 and the reference temperature at the position of the loop pipe 10 when the air conditioner operates in the cooling mode comprises the following steps:
s4: when the air conditioner operates in a refrigeration mode, acquiring indoor and outdoor temperature difference;
s12: and when the indoor and outdoor temperature difference is lower than or equal to a first preset temperature difference, executing the step of acquiring the difference between the temperature of the coil pipe of the outdoor heat exchanger and the reference temperature at the position of the return pipe.
The fundamental reason why the compressor 40 operates at a low frequency and the outdoor fan operates at a low rotational speed is that the cooling capacity required by the user is small, and at this time, the outside temperature of the user is not large as the set temperature of the air conditioner set by the user, and therefore, in the present embodiment, when the air conditioner operates in the cooling mode, the indoor and outdoor temperature difference is obtained, and the indoor and outdoor temperature difference can be obtained at regular time or periodically, and the manner of obtaining at regular time includes obtaining at different time periods of the day such as early, middle and late (the temperature difference is large at different time periods of the day in some areas), and the periodic obtaining setting is that obtaining at ten minutes or obtaining at different time periods of the hour is not equal. The indoor and outdoor temperature difference may be a difference between an indoor air temperature detected by the air conditioner and an outdoor ambient temperature, or may be a difference between a target temperature set by a user and the outdoor ambient temperature.
In an embodiment, the specific implementation steps may also be as follows according to the cooling capacity of the air conditioner in the cooling mode as a trigger condition:
the step of obtaining the difference between the coil temperature of the outdoor heat exchanger 50 and the reference temperature at the position of the loop pipe 10 when the air conditioner operates in the cooling mode comprises the following steps:
when the air conditioner operates in a refrigeration mode, acquiring the refrigeration capacity of the air conditioner;
when the cooling capacity is lower than or equal to a preset cooling capacity, the step of obtaining the difference value between the coil temperature of the outdoor heat exchanger 50 and the reference temperature at the position of the loop pipe 10 is performed.
In this embodiment, when the cooling capacity is lower than or equal to the preset cooling capacity, it indicates that the compressor 40 and the outdoor fan are in a low load state, and at this time, the step of obtaining the difference between the coil temperature of the outdoor heat exchanger 50 and the reference temperature at the position of the loop pipe 10 is performed.
Based on the first embodiment, the control method of the air conditioner of the present invention further provides an optional embodiment:
when the difference value meets a preset value, the operation of the air conditioner is controlled according to a first preset parameter, so as to reduce the temperature of the refrigerant flowing through the loop pipe 10, and after the step, the method further comprises the following steps:
acquiring the current indoor temperature and the set temperature of the air conditioner;
and when the difference value between the current indoor temperature and the set temperature is greater than or equal to a second preset temperature difference, controlling the air conditioner to operate according to a second preset parameter so as to improve the temperature of the refrigerant flowing through the return pipe 10.
The specific measures for controlling the operation of the air conditioner according to the first preset parameter may be an adjustment value for the operating frequency of the compressor 40, an adjustment value for the rotating speed of the outdoor fan, an adjustment value for the opening degree of the electronic expansion valve, and the like, in order to avoid excessive adjustment and excessive refrigerating capacity provided by the air conditioner indoors, the current indoor temperature and the set temperature of the air conditioner may be further obtained after the air conditioner is controlled to operate according to the first preset parameter, and when the difference between the current indoor temperature and the set temperature is greater than or equal to a second preset temperature difference, the air conditioner is controlled to operate according to the second preset parameter, so as to increase the temperature of the refrigerant flowing through the loop pipe 10. The second preset parameter in this embodiment may specifically be an adjustment value of the operating frequency of the compressor 40, an adjustment value of the rotating speed of the outdoor fan, an adjustment value of the opening degree of the electronic expansion valve, and the like, and the first preset parameter and the second preset parameter may be equal to or different from each other.
The invention also provides an air conditioner, which comprises a memory, a processor and a control program of the air conditioner, wherein the control program of the air conditioner is stored on the memory and can run on the processor, and the control program of the air conditioner realizes the steps of the control method of the air conditioner when being executed by the processor.
The present invention also proposes a computer-readable storage medium having stored thereon a control program of an air conditioner, which when executed by a processor implements the steps of the control method of the air conditioner as described above.
The above-mentioned serial numbers of the embodiments of the present invention are merely for description and do not represent the merits of the embodiments.
Through the above description of the embodiments, those skilled in the art will clearly understand that the method of the above embodiments can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware, but in many cases, the former is a better implementation manner. 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 (e.g., ROM/RAM, magnetic disk, optical disk) as described above and includes instructions for enabling a terminal device (e.g., a television, a mobile phone, a computer, a server, an air conditioner, or a network device) to execute the method according to the embodiments of the present invention.
The above description is only a preferred embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by using the contents of the present specification and the accompanying drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (12)
1. A control method of an air conditioner is characterized in that the air conditioner comprises an outdoor heat exchanger and an indoor heat exchanger, a return pipe is connected in series on a pipeline of a refrigerant flowing from the outdoor heat exchanger to the indoor heat exchanger, the return pipe is communicated with a refrigerant outlet of the outdoor heat exchanger and a refrigerant inlet of the indoor heat exchanger, and the control method of the air conditioner comprises the following steps:
when the air conditioner runs in a refrigeration mode, acquiring a difference value between the temperature of a coil of the outdoor heat exchanger and a reference temperature at the position of the return pipe;
and when the difference value meets a preset value, controlling the air conditioner to operate according to a first preset parameter.
2. The control method of an air conditioner according to claim 1, wherein the step of controlling the operation of the air conditioner according to a first preset parameter comprises:
and controlling an outdoor fan corresponding to the outdoor heat exchanger to increase a preset rotating speed.
3. The method as claimed in claim 1, wherein an electronic expansion valve is further connected to a pipe between the outdoor heat exchanger and the indoor heat exchanger, and the step of controlling the operation of the air conditioner according to the first preset parameter includes:
and controlling the electronic expansion valve to increase the preset opening degree.
4. The method as claimed in claim 1, wherein the step of obtaining the difference between the coil temperature of the outdoor heat exchanger and the reference temperature at the position of the loop pipe when the air conditioner operates in the cooling mode comprises:
when the air conditioner operates in a refrigeration mode, acquiring the working frequency of a compressor;
and when the working frequency is lower than or equal to a preset frequency, executing the step of acquiring the difference value between the coil temperature of the outdoor heat exchanger and the reference temperature of the return pipe.
5. The method as claimed in claim 1, wherein the step of obtaining the difference between the coil temperature of the outdoor heat exchanger and the reference temperature at the position of the loop pipe when the air conditioner operates in the cooling mode comprises:
when the air conditioner operates in a refrigeration mode, acquiring indoor and outdoor temperature difference;
and when the indoor and outdoor temperature difference is lower than or equal to a first preset temperature difference, executing the step of acquiring the difference between the temperature of the coil pipe of the outdoor heat exchanger and the reference temperature of the position of the return pipe.
6. The method as claimed in claim 1, wherein the step of obtaining the difference between the temperature of the coil of the outdoor heat exchanger and the reference temperature at the coil when the air conditioner operates in the cooling mode is preceded by:
when the air conditioner operates in a refrigeration mode, acquiring the refrigeration capacity of the air conditioner;
and when the refrigerating capacity is lower than or equal to a preset refrigerating capacity, executing the step of acquiring the difference value between the temperature of the coil pipe of the outdoor heat exchanger and the reference temperature at the position of the return pipe.
7. The method as claimed in claim 1, wherein after the step of controlling the air conditioner to operate according to a first preset parameter to reduce the temperature of the refrigerant flowing through the loop pipe when the difference value satisfies a preset value, the method further comprises:
acquiring the current indoor temperature and the set temperature of the air conditioner;
and when the difference value between the current indoor temperature and the set temperature is greater than or equal to a second preset temperature difference, controlling the air conditioner to operate according to a second preset parameter.
8. The method as claimed in any one of claims 1 to 7, wherein the air conditioner further comprises a first filter disposed at a refrigerant inlet of the return pipe, a second filter disposed at a refrigerant outlet of the return pipe, and a temperature sensor disposed on the return pipe and at an outlet side of the second filter.
9. The control method of an air conditioner according to claim 8, wherein the loop pipe between the first and second screens extends in a spiral shape or a U shape.
10. The control method of an air conditioner according to claim 1, wherein the diameter of the loop pipe is in the range of 5mm-7 mm.
11. An air conditioner, characterized in that the air conditioner comprises a memory, a processor, and a control program of the air conditioner stored on the memory and executable on the processor, the control program of the air conditioner realizing the steps of the control method of the air conditioner according to any one of claims 1 to 10 when executed by the processor.
12. A computer-readable storage medium, characterized in that a control program of an air conditioner is stored thereon, which when executed by a processor implements the steps of the control method of the air conditioner according to any one of claims 1 to 10.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010965069.3A CN112066522A (en) | 2020-09-14 | 2020-09-14 | Control method of air conditioner, air conditioner and computer readable storage medium |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010965069.3A CN112066522A (en) | 2020-09-14 | 2020-09-14 | Control method of air conditioner, air conditioner and computer readable storage medium |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112066522A true CN112066522A (en) | 2020-12-11 |
Family
ID=73696749
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010965069.3A Pending CN112066522A (en) | 2020-09-14 | 2020-09-14 | Control method of air conditioner, air conditioner and computer readable storage medium |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112066522A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113531676A (en) * | 2021-07-28 | 2021-10-22 | 珠海格力电器股份有限公司 | Air conditioner noise reduction control method and air conditioner |
| CN114353281A (en) * | 2021-12-28 | 2022-04-15 | 青岛海尔空调电子有限公司 | Electronic expansion valve control method and device, computer equipment and storage medium |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202647990U (en) * | 2012-05-19 | 2013-01-02 | Tcl空调器(中山)有限公司 | Double-pole and double-condensation air conditioner |
| CN108131803A (en) * | 2017-12-18 | 2018-06-08 | 广东美的暖通设备有限公司 | The control method of multi-gang air-conditioner |
| CN108518897A (en) * | 2018-05-28 | 2018-09-11 | 珠海格力电器股份有限公司 | Throttle filter assemblies and air conditioner |
| EP3537067A1 (en) * | 2018-03-09 | 2019-09-11 | LG Electronics Inc. | Indoor apparatus in air-conditioning system and method for controlling the apparatus |
| EP3537064A1 (en) * | 2018-03-09 | 2019-09-11 | LG Electronics Inc. | Indoor appartus of air-conditioning system with reduced refrigerant noise and method for controlling the apparatus |
-
2020
- 2020-09-14 CN CN202010965069.3A patent/CN112066522A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202647990U (en) * | 2012-05-19 | 2013-01-02 | Tcl空调器(中山)有限公司 | Double-pole and double-condensation air conditioner |
| CN108131803A (en) * | 2017-12-18 | 2018-06-08 | 广东美的暖通设备有限公司 | The control method of multi-gang air-conditioner |
| EP3537067A1 (en) * | 2018-03-09 | 2019-09-11 | LG Electronics Inc. | Indoor apparatus in air-conditioning system and method for controlling the apparatus |
| EP3537064A1 (en) * | 2018-03-09 | 2019-09-11 | LG Electronics Inc. | Indoor appartus of air-conditioning system with reduced refrigerant noise and method for controlling the apparatus |
| CN108518897A (en) * | 2018-05-28 | 2018-09-11 | 珠海格力电器股份有限公司 | Throttle filter assemblies and air conditioner |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113531676A (en) * | 2021-07-28 | 2021-10-22 | 珠海格力电器股份有限公司 | Air conditioner noise reduction control method and air conditioner |
| CN114353281A (en) * | 2021-12-28 | 2022-04-15 | 青岛海尔空调电子有限公司 | Electronic expansion valve control method and device, computer equipment and storage medium |
| CN114353281B (en) * | 2021-12-28 | 2023-08-15 | 青岛海尔空调电子有限公司 | Electronic expansion valve control method, electronic expansion valve control device, computer equipment and storage medium |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107120793B (en) | Variable frequency air conditioner and condensation prevention control method for variable frequency module radiator thereof | |
| CN201522040U (en) | Temperature adjusting dehumidifier capable of changing air quantity | |
| WO2021233465A1 (en) | Control method for air conditioning unit, and air conditioning unit | |
| CN104964343A (en) | Device and method for improving running reliability of compressor | |
| CN112066522A (en) | Control method of air conditioner, air conditioner and computer readable storage medium | |
| US9890980B2 (en) | System and method of freeze protection of a heat exchanger in an HVAC system | |
| CN205208775U (en) | Outdoor unit of air conditioner and air conditioner | |
| CN103307754A (en) | Method and device for controlling openings of electronic expansion valves of water heater and air conditioner | |
| CN105674434A (en) | Cooling and heating type air conditioner and cooling-only type air conditioner | |
| CN105402958A (en) | Air conditioner and control method of air conditioning refrigerants | |
| CN105758036A (en) | Single-refrigeration type air conditioner and control method thereof | |
| JPH09292166A (en) | Air conditioner | |
| CN106813416B (en) | Multi-split system and device for reducing flowing sound of refrigerant in multi-split system | |
| CN207350996U (en) | Air-conditioning device with dehumidify evaporimeter | |
| CN105783324A (en) | Cooling-heating-type air conditioner and control method thereof | |
| CN105783310A (en) | Cooling-heating-type air conditioner and control method thereof | |
| CN115342476A (en) | Electronic expansion valve control method and control device and multi-split air conditioning system | |
| CN109595841A (en) | Air-conditioning system and its control method | |
| CN211119742U (en) | Air conditioning system with fresh air dehumidification function and air conditioner | |
| CN114963442A (en) | Air conditioner and control method thereof | |
| CN211926200U (en) | Pressure regulator, outdoor unit and air conditioning system | |
| CN202371820U (en) | Air conditioner | |
| CN202973686U (en) | Throttling device of variable frequency air conditioner and air conditioner | |
| US20150121946A1 (en) | Capacity-Increasing Device For Four-Way Valve In Air Conditioning System And The Air Conditioning System | |
| CN112728817A (en) | Air conditioning system and control method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20201211 |
|
| RJ01 | Rejection of invention patent application after publication |