CN112797581B - Air conditioner temperature control method, air conditioner and computer readable storage medium - Google Patents

Air conditioner temperature control method, air conditioner and computer readable storage medium Download PDF

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Publication number
CN112797581B
CN112797581B CN202011642702.1A CN202011642702A CN112797581B CN 112797581 B CN112797581 B CN 112797581B CN 202011642702 A CN202011642702 A CN 202011642702A CN 112797581 B CN112797581 B CN 112797581B
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Prior art keywords
temperature
air conditioner
heat exchanger
inner disc
preset
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CN112797581A (en
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黄彩凤
汪先兵
彭嘉明
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TCL Air Conditioner Zhongshan Co Ltd
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TCL Air Conditioner Zhongshan Co Ltd
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
    • F24F11/63—Electronic processing
    • F24F11/64—Electronic processing using pre-stored data
    • 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
    • F24F11/61—Control or safety arrangements characterised by user interfaces or communication using timers
    • 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
    • F24F11/72—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure
    • F24F11/74—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity
    • 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
    • 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
    • F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
    • F24F13/22—Means for preventing condensation or evacuating condensate
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
    • F25B13/00—Compression machines, plants or systems, with reversible cycle
    • 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
    • F24F13/22—Means for preventing condensation or evacuating condensate
    • F24F2013/221—Means for preventing condensation or evacuating condensate to avoid the formation of condensate, e.g. dew
    • 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

Abstract

The invention discloses a temperature control method, an air conditioner and a computer readable storage medium, wherein the air conditioner comprises a refrigerant circulation loop and a flow control passage, wherein the refrigerant circulation loop comprises a four-way valve, an indoor heat exchanger, a first throttling device, an outdoor heat exchanger and a compressor, the flow control passage is connected with the first throttling device in parallel, the flow control passage is added in the air conditioner to control the refrigerant flow participating in temperature regulation in the indoor heat exchanger of the air conditioner and regulate the air outlet temperature of the air conditioner, namely, according to the obtained regulating instruction, if the air conditioner is detected to start a soft wind function, a target windshield set by a user is obtained from the regulating instruction, the temperature of an inner disc of the indoor heat exchanger is detected, according to the temperature of the inner disc and the target windshield, the refrigerant flow passing through the flow control passage is controlled to control the air outlet temperature of the air conditioner, the condensation is prevented, and the soft wind function can be applied to the fixed-frequency air conditioner through controlling the air outlet temperature of the air conditioner.

Description

Air conditioner temperature control method, air conditioner and computer readable storage medium
Technical Field
The invention relates to the technical field of air conditioners, in particular to an air conditioner temperature control method, an air conditioner and a computer readable storage medium.
Background
The existing fixed frequency air conditioner can not realize the soft wind function because the problem of condensation can not be solved. However, the fixed-frequency air conditioner has low cost, high reliability and stability, and few faults and alarms, so the fixed-frequency air conditioner is still selected by many air conditioner users, and the invention of the fixed-frequency air conditioner with the soft wind function is particularly necessary.
Disclosure of Invention
The invention mainly aims to provide a temperature control method, an air conditioner and a computer readable storage medium, and aims to solve the technical problem that a constant-frequency air conditioner cannot realize a soft wind function because the condensation problem cannot be solved.
In addition, in order to achieve the above object, the present invention further provides an air conditioner temperature control method, where the temperature control method is applied to an air conditioner, the air conditioner includes a refrigerant circulation loop and a flow control path, the refrigerant circulation loop includes a four-way valve, an indoor heat exchanger, a first throttling device, an outdoor heat exchanger, and a compressor, the flow control path is connected in parallel with the first throttling device, and the air conditioner temperature control method includes the following steps:
acquiring an adjusting instruction, and acquiring a target windshield set by a user from the adjusting instruction if the air conditioner is detected to start a soft wind function;
detecting the temperature of an inner disc of the indoor heat exchanger;
and controlling the flow of the refrigerant passing through the flow control passage according to the temperature of the inner disc and the target windshield so as to control the air outlet temperature of the air conditioner.
Optionally, the step of controlling the flow rate of the refrigerant passing through the flow rate control path according to the temperature of the inner disc and the target damper to control the outlet air temperature of the air conditioner includes:
comparing the target windshield with a preset windshield, and if the target windshield is lower than the preset windshield, acquiring the temperature of an inner disc of the indoor heat exchanger;
controlling the opening degree of a valve of the electromagnetic valve according to the temperature of the inner disc;
and controlling the flow of the return refrigerant flowing into the compressor through the flow control passage according to the valve opening of the electromagnetic valve so as to control the air outlet temperature of the air conditioner.
Optionally, the step of controlling a valve opening of the electromagnetic valve according to the inner disc temperature includes:
comparing the inner disc temperature with a first preset threshold;
if the inner disc temperature is lower than the first preset threshold, acquiring a first target duration that the inner disc temperature is continuously lower than the first preset threshold;
comparing the first target duration with the first preset duration;
and if the first target time length is greater than the first preset time length, adjusting the valve opening of the electromagnetic valve to be a first preset opening.
Optionally, the step of adjusting the valve opening of the electromagnetic valve to a first preset opening includes:
acquiring the temperature of the inner disc, comparing the temperature of the inner disc with the first preset threshold, and if the temperature of the inner disc is higher than or equal to the first preset threshold, comparing the temperature of the inner disc with a second preset threshold, wherein the second preset threshold is higher than the first preset threshold;
if the inner disc temperature is lower than the second preset threshold, acquiring a second target duration that the inner disc temperature is continuously lower than the second preset threshold, and comparing the second target duration with a second preset duration;
and if the second target time length is greater than the second preset time length, adjusting the valve opening of the electromagnetic valve to be a second preset opening.
Optionally, the step of adjusting the valve opening of the electromagnetic valve to a second preset opening includes:
acquiring the temperature of the inner disc, and comparing the temperature of the inner disc with the second preset threshold value;
if the inner disc temperature is higher than or equal to the second preset threshold, obtaining a third target time length that the inner disc temperature is continuously higher than or equal to the second preset threshold, and comparing the third target time length with a third preset time length;
and if the third target time length is greater than the third preset time length, adjusting the valve opening of the electromagnetic valve to a third preset opening.
Optionally, the step before controlling the refrigerant flow passing through the flow control path according to the inner disc temperature and the target damper includes:
detecting an actual windshield of the air conditioner;
comparing the actual windshield to the target windshield;
and if the actual windshield is different from the target windshield, adjusting the windshield of the air conditioner to be the target windshield.
In addition, in order to achieve the above object, the present invention further provides an air conditioner, where the air conditioner includes a refrigerant circulation loop and a flow control path, where the refrigerant circulation loop includes a four-way valve, an indoor heat exchanger, a first throttling device, an outdoor heat exchanger, and a compressor, the flow control path is connected in parallel with the first throttling device, the flow control path is used to control the refrigerant flow passing through the refrigerant circulation loop according to a control instruction after the air conditioner starts a soft wind function, so as to control the air outlet temperature of the air conditioner, and the control instruction is triggered by an adjustment instruction received by the air conditioner.
Optionally, the compressor is provided with a refrigerant return port, the refrigerant circulation loop is formed by sequentially connecting the four-way valve, the indoor heat exchanger, the first throttling device, the outdoor heat exchanger and the compressor, the flow control path is formed by sequentially connecting the outdoor heat exchanger, the electromagnetic valve, the second throttling device and the compressor, one end of the electromagnetic valve is connected with an air outlet of the outdoor heat exchanger, the other end of the electromagnetic valve is connected with the second throttling device, and the other end of the second throttling device is connected with the refrigerant return port of the compressor.
Optionally, the refrigerant circulation loop is formed by sequentially connecting the four-way valve, the indoor heat exchanger, the first throttling device, the outdoor heat exchanger and the compressor, the flow control path is formed by sequentially connecting the outdoor heat exchanger, the electromagnetic valve, the second throttling device and the indoor heat exchanger, one end of the electromagnetic valve is connected with an air outlet of the outdoor heat exchanger, the other end of the electromagnetic valve is connected with the second throttling device, and the other end of the second throttling device is connected with an air inlet of the indoor heat exchanger.
Further, to achieve the above object, the present invention also provides a computer readable storage medium having stored thereon an air conditioner temperature control program which, when executed by a processor, realizes the steps of the air conditioner temperature control method as described above.
According to the temperature control method, the air conditioner and the computer readable storage medium provided by the embodiment of the invention, in the prior art, the fixed frequency air conditioner cannot realize a soft wind function due to the fact that the problem of condensation of the fixed frequency air conditioner cannot be solved, the flow control path is added in the air conditioner, the control of the refrigerant flow participating in temperature regulation in an indoor heat exchanger of the air conditioner is realized, and therefore the outlet air temperature of the air conditioner is controlled, wherein the air conditioner comprises the refrigerant circulation loop and the flow control path, the refrigerant circulation loop comprises a four-way valve, an indoor heat exchanger, a first throttling device, an outdoor heat exchanger and a compressor, and the flow control path is connected with the first throttling device in parallel. Namely, according to the obtained adjusting instruction, if the air conditioner corresponding to the adjusting instruction is detected to start the soft wind function, a target windshield set by a user is obtained from the adjusting instruction, the temperature of an inner disc in the air conditioner is detected, the refrigerant flow passing through the flow control passage is controlled according to the temperature of the inner disc and the target windshield to control the outlet air temperature of the air conditioner, namely, when the soft wind function is detected to start the air conditioner, the target windshield set by the user is obtained, the temperature of the inner disc of the air conditioner is detected, the refrigerant flow passing through the flow control passage is controlled according to the temperature of the inner disc of the air conditioner and the target windshield set by the user, so that the control of the refrigerant flow participating in temperature adjustment in an indoor heat exchanger of the air conditioner is realized, the outlet air temperature of the air conditioner is further controlled, and the outlet air temperature of the air conditioner is ensured not to cause condensation, thereby realizing the application of the soft wind function to the fixed-frequency air conditioner.
Drawings
Fig. 1 is a schematic hardware structure diagram of an implementation manner of an apparatus according to an embodiment of the present invention;
FIG. 2 is a schematic flow chart illustrating a method for controlling the temperature of an air conditioner according to a first embodiment of the present invention;
FIG. 3 is a schematic structural diagram of an air conditioner according to the method for controlling the temperature of the air conditioner of the present invention;
FIG. 4 is a schematic view of another structure of an air conditioner according to the method for controlling the temperature of the air conditioner of the present invention;
fig. 5 is a schematic control flow diagram of an embodiment of an air conditioner temperature control method according to the present invention.
The implementation, functional features and advantages of the present invention will be further described 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.
In the following description, suffixes such as "module", "part", or "unit" used to indicate elements are used only for facilitating the description of the present invention, and have no particular meaning in themselves. Thus, "module", "component" or "unit" may be used mixedly.
The terminal of the embodiment of the invention is an air conditioner which can be a fixed frequency air conditioner, a variable frequency air conditioner, a split type air conditioner and the like.
As shown in fig. 1, the terminal may include: a processor 1001, such as a CPU, a network interface 1004, a user interface 1003, a memory 1005, a communication bus 1002. The communication bus 1002 is used to implement connection communication among these components. The user interface 1003 may include a Display screen (Display), an input unit such as a Keyboard (Keyboard), and the optional user interface 1003 may also include a standard wired interface, a wireless interface. The network interface 1004 may optionally include a standard wired interface, a wireless interface (e.g., WI-FI interface). The memory 1005 may be a high-speed RAM memory or a non-volatile memory such as a disk memory. The memory 1005 may alternatively be a storage device separate from the processor 1001 described previously.
Those skilled in the art will appreciate that the terminal structure 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, a memory 1005, which is a kind of computer-readable storage medium, may include therein an operating system, a network communication module, a user interface module, and an air conditioner control program.
The temperature control method in the terminal shown in fig. 1 is applied to an air conditioner, where the air conditioner includes a refrigerant circulation loop and a flow control path, where the refrigerant circulation loop includes a four-way valve, an indoor heat exchanger, a first throttling device, an outdoor heat exchanger, and a compressor, the flow control path is connected in parallel with the first throttling device, and the processor 1001 may be configured to call an air conditioner temperature control program stored in the memory 1005, and perform the following operations:
acquiring an adjusting instruction, and acquiring a target windshield set by a user from the adjusting instruction if the air conditioner is detected to start a soft wind function;
detecting the temperature of an inner disc of the indoor heat exchanger;
and controlling the flow of the refrigerant passing through the flow control passage according to the temperature of the inner disc and the target windshield so as to control the air outlet temperature of the air conditioner.
Further, the flow control path includes the electromagnetic valve and the second throttling device, one end of the flow control path is connected to the outdoor heat exchanger, and the other end of the flow control path is connected to the compressor, and the processor 1001 may be configured to call an air conditioner temperature control program stored in the memory 1005, and further perform the following operations:
comparing the target windshield with a preset windshield, and if the target windshield is lower than the preset windshield, acquiring the temperature of an inner disc of the indoor heat exchanger;
controlling the valve opening of the electromagnetic valve according to the temperature of the inner disc;
and controlling the flow of the return refrigerant flowing into the compressor through the flow control passage according to the valve opening of the electromagnetic valve so as to control the flow of the refrigerant participating in temperature regulation in the indoor heat exchanger and regulate the air outlet temperature of the air conditioner.
Further, the processor 1001 may be configured to call an air conditioner temperature control program stored in the memory 1005, and further perform the following operations:
comparing the inner disc temperature with a first preset threshold;
if the inner disc temperature is lower than the first preset threshold, acquiring a first target duration that the inner disc temperature is continuously lower than the first preset threshold;
comparing the first target duration with the first preset duration;
and if the first target time length is longer than the first preset time length, adjusting the valve opening of the electromagnetic valve to be a first preset opening.
Further, the processor 1001 may be configured to call an air conditioner temperature control program stored in the memory 1005, and further perform the following operations:
acquiring the temperature of the inner disc, comparing the temperature of the inner disc with the first preset threshold, and if the temperature of the inner disc is higher than or equal to the first preset threshold, comparing the temperature of the inner disc with a second preset threshold, wherein the second preset threshold is higher than the first preset threshold;
if the inner disc temperature is lower than the second preset threshold, acquiring a second target duration that the inner disc temperature is continuously lower than the second preset threshold, and comparing the second target duration with a second preset duration;
and if the second target time length is greater than the second preset time length, adjusting the valve opening of the electromagnetic valve to a second preset opening.
Further, the processor 1001 may be configured to call an air conditioner temperature control program stored in the memory 1005, and further perform the following operations:
acquiring the temperature of the inner disc, and comparing the temperature of the inner disc with the second preset threshold value;
if the inner disc temperature is higher than or equal to the second preset threshold, obtaining a third target time length that the inner disc temperature is continuously higher than or equal to the second preset threshold, and comparing the third target time length with a third preset time length;
and if the third target time length is greater than the third preset time length, adjusting the valve opening of the electromagnetic valve to a third preset opening.
Further, the flow control path includes the electromagnetic valve and the second throttling device, one end of the flow control path is connected to the outdoor heat exchanger, and the other end of the flow control path is connected to the indoor heat exchanger, and the processor 1001 may be configured to call an air conditioner temperature control program stored in the memory 1005, and further perform the following operations:
detecting an actual windshield of the air conditioner;
comparing the actual windshield to the target windshield;
and if the actual windshield is different from the target windshield, adjusting the windshield of the air conditioner to be the target windshield.
Based on the hardware structure of the equipment, the embodiment of the air conditioner temperature control method is provided.
Referring to fig. 2, in a first embodiment of a temperature control method of the present invention, the air conditioner temperature control method includes:
step S10, obtaining an adjusting instruction, and if detecting that the air conditioner starts a soft wind function, obtaining a target windshield set by a user from the adjusting instruction;
step S20, detecting and acquiring the temperature of the inner disc of the indoor heat exchanger;
and step S30, controlling the flow of the refrigerant passing through the flow control passage according to the temperature of the inner disc so as to control the flow of the refrigerant participating in temperature regulation in the indoor heat exchanger and regulate the air outlet temperature of the air conditioner.
Specifically, step S10, acquiring an adjustment instruction, and if it is detected that the air conditioner starts the soft wind function, acquiring a target windshield set by a user from the adjustment instruction;
in this embodiment, the air conditioner temperature control method is applied to an air conditioner, which may be a fixed-frequency air conditioner, and the following description will take the fixed-frequency air conditioner as an example. The air conditioner in this embodiment includes that four-way valve, indoor heat exchanger, first throttling arrangement, outdoor heat exchanger, compressor connect gradually the refrigerant circulation circuit that constitutes, and connect flow control access in the refrigerant circulation circuit, in this embodiment, when the air conditioner is in the refrigeration cycle mode, acquire the adjustment command of user's input, if follow detect the air conditioner in the adjustment command and started the gentle breeze function, can improve the comfort level when the air conditioner refrigerates the operation. And the adjusting instruction comprises a starting instruction, a wind speed instruction, a mode instruction and the like of the air conditioner, if the air conditioner is detected to start a soft wind function from the adjusting instruction, a target windshield set by a user is obtained from the adjusting instruction, the target windshield corresponds to the wind speed instruction in the adjusting instruction, and the target windshield is determined according to the wind speed instruction input by the user. If the air conditioner is detected not to be started with the soft wind function, for example, if the air conditioner is detected to be just adjusted in temperature and wind speed by an adjusting instruction triggered by a user and a common refrigeration mode is selected, the air conditioner is controlled according to a preset conventional control mode according to the adjusting instruction.
Step S20, detecting the temperature of the inner disc of the indoor heat exchanger;
in this embodiment, the air conditioner may be provided with a temperature detection module for detecting the inner panel temperature of the air conditioner and a timing module for detecting the temperature duration of the inner panel temperature of the air conditioner. The method comprises the steps of detecting the inner disc temperature of an indoor heat exchanger of the air conditioner, carrying out circulating monitoring on the inner disc temperature of the indoor heat exchanger, wherein the circulating monitoring can be that the inner disc temperature of the indoor heat exchanger in the air conditioner is detected once every preset time, the preset time can be set according to different air conditioners, the time interval for detecting the inner disc temperature is short generally, when the inner disc temperature of the air conditioner is lower than a first preset value, if the time when the inner disc temperature is lower than the first preset value exceeds the first preset time, a temperature rising instruction is triggered, the air conditioner raises the air outlet temperature of the air conditioner according to the temperature rising instruction, when the inner disc temperature of the air conditioner is higher than a second preset value, if the time when the inner disc temperature is higher than the first preset value exceeds the second preset time, a temperature lowering instruction is triggered, and the air outlet temperature of the air conditioner is lowered according to the temperature lowering instruction. When the fixed-frequency air conditioner adjusts the indoor temperature according to the temperature adjusting instruction, the control of the outlet air temperature of the air conditioner is a cyclic reciprocating process, therefore, the inner disc temperature of the air conditioner needs to be cyclically monitored, the inner disc temperature of the air conditioner and the duration time of the temperature are detected, the outlet air temperature of the air conditioner is further determined, if the outlet air temperature is lower than a second preset value and the duration time exceeds a second preset duration time, condensation is easily formed at an air outlet of the air conditioner, if the outlet air temperature is higher than the second preset value and the duration time exceeds the second preset duration time, the refrigeration effect of the air conditioner is affected, therefore, the outlet air temperature of the air conditioner needs to be maintained in a dynamic balance temperature range, the outlet air temperature of the air conditioner is controlled within a temperature range which does not affect the refrigeration effect and cannot generate condensation, the dynamic balance adjustment of the temperature is realized, and the inner disc temperature and the duration time of the temperature of the air conditioner need to be continuously and cyclically obtained and detected, and determining the air outlet temperature of the air conditioner according to the inner disc temperature of the air conditioner.
And step S30, controlling the refrigerant flow passing through the flow control passage according to the inner disc temperature and the target windshield so as to control the air outlet temperature of the air conditioner.
The target windshield is the setting windshield in the adjustment instruction that the user triggered, if the air-out temperature of the air conditioner that the user set for the windshield corresponds is higher, then need not control the air-out temperature again, if the air-out temperature that the target windshield that the user set for corresponds is lower, there is the possibility that produces the condensation, then need detect the air-out temperature of air conditioner, the air-out temperature can be confirmed through the inner disc temperature that detects the indoor heat exchanger of air conditioner, the inner disc temperature of the indoor heat exchanger in the air conditioner mainly is used for confirming the air-out temperature, if the air-out temperature is long-time too low, easily produce the condensation at the air outlet of air conditioner, influence the use of gentle breeze function, consequently need be according to the inner disc temperature control air-out temperature of air conditioner. The air conditioner, especially the fixed frequency air conditioner, mainly transfers heat through the coolant, can set up a flow control channel, should include electromagnetic valve and throttling set in the flow control channel, then through controlling the valve opening of the electromagnetic valve, control the coolant flow, achieve the goal of controlling the temperature of air-out, it should be noted that, the flow of coolant to be controlled here is the coolant flow participating in the whole course of refrigerating cycle, therefore, we can be through setting up a coolant flow control channel, and set up an electromagnetic valve on the coolant flow control channel, control the coolant flow through the coolant flow control channel, and then control the coolant flow participating in the whole course of refrigerating cycle, achieve the goal of controlling the temperature of air-out, namely the said inner disc temperature. When the refrigerant flow is controlled by controlling the valve opening of the electromagnetic valve, it is easy to think that the refrigerant in the air conditioner is quantitative, and the size of the valve opening is in direct proportion to the refrigerant flow passing through the flow control passage where the electromagnetic valve is located, so to realize the control of the refrigerant flow, the connection mode of the flow control passage can be two types:
the first method is as follows: the method comprises the steps that a refrigerant backflow port is arranged on a compressor of the air conditioner, a flow control channel is connected between an outdoor heat exchanger of the air conditioner and the compressor, liquid refrigerants flowing out of the outdoor heat exchanger are divided into two paths, and the flow of the refrigerants flowing into the indoor heat exchanger is controlled by controlling the flow of the refrigerants flowing back to the compressor;
the second method comprises the following steps: the flow control passage is connected between the outdoor heat exchanger and the indoor heat exchanger, divides liquid refrigerant flowing out of the outdoor heat exchanger into two paths, and controls the flow of the refrigerant flowing into the indoor heat exchanger by controlling the flow of the refrigerant flowing through the flow control passage.
If the valve opening of the electromagnetic valve on the flow control passage controls the refrigerant flow participating in the refrigeration cycle, the refrigerant flow to be controlled is in a direct proportion relation with the size of the valve opening of the preset electromagnetic valve, if the valve opening of the electromagnetic valve controls the returned refrigerant flow, the larger the valve opening of the electromagnetic valve is, the larger the refrigerant flow flowing through the electromagnetic valve is, the smaller the refrigerant flow participating in the refrigeration cycle is, and the refrigerant flow participating in the refrigeration cycle is in an inverse proportion relation with the size of the valve opening of the electromagnetic valve. Therefore, the relationship between the valve opening of the solenoid valve in the flow rate control passage and the inner disk temperature needs to be determined according to the connection relationship of the flow rate control passage.
The steps before step S30, including steps A01-A03:
step A01, detecting an actual windshield of the air conditioner;
step a02, comparing the actual windshield with the target windshield;
step A03, if the actual windshield is different from the target windshield, adjusting the windshield of the air conditioner to the target windshield.
After the temperature of an inner disc of the air conditioner is detected, an actual windshield of the air conditioner is detected, the actual windshield is compared with a target windshield in an adjusting instruction triggered by a user, and if the actual windshield is inconsistent with the target windshield set by the user, the windshield of the air conditioner is adjusted to be the target windshield set by the user. And then determining a control mechanism for the air outlet temperature of the air conditioner according to the temperature of the inner disc and the target windshield.
Referring to fig. 3, fig. 3 is a schematic structural diagram of an air conditioner according to the temperature control method of the present invention, the air conditioner includes a compressor 1, a four-way valve 2, an outdoor heat exchanger 3, a solenoid valve 4, a first throttling device 5, a second throttling device 6, and an indoor heat exchanger 7, wherein an open state of the four-way valve 2 can control a flow direction of a refrigerant, so as to determine an operation mode of the air conditioner, such as a refrigeration cycle or a heating cycle. In the air conditioner structure shown in fig. 3, the flow control paths are connected in the first manner, taking the refrigeration cycle of the air conditioner as an example, when the air conditioner is in the refrigeration cycle mode, the refrigerant in the air conditioner transfers heat from the indoor to the outdoor, the refrigerant is in a liquid state when flowing into the indoor heat exchanger 7, is converted into a gas state by absorbing heat, then passes through the first port on the right side of the four-way valve 2 from the air outlet above the indoor heat exchanger 7, and flows into the compressor from the air inlet above the compressor 1. The compressor 1 compresses a gaseous refrigerant, the compressed gaseous refrigerant passes through the four-way valve 2 from a gas outlet on the left side of the compressor 1 through a second port above the four-way valve 2, then flows out of a third port on the left side of the four-way valve 2, flows into the outdoor heat exchanger 3 from a gas inlet above the outdoor heat exchanger 3, releases heat in the outdoor heat exchanger 3, and is converted into a liquid state from a gaseous state. After flowing out of a gas outlet below the outdoor heat exchanger 3, the liquid refrigerant is divided into two paths, wherein a path between the gas outlet below the outdoor heat exchanger 3 and a gas inlet below the indoor heat exchanger 7, together with the solenoid valve 4 and the second throttling device 6, forms a first branch of the liquid refrigerant, the first branch of the liquid refrigerant is also a refrigerant backflow path, the refrigerant flow is controlled by the solenoid valve 4, a path between the gas outlet below the outdoor heat exchanger 3 and a refrigerant backflow port of the compressor 1, forms a second branch of the liquid refrigerant together with the first throttling device 5, and the refrigerant flow flowing through the second branch can be unchanged. After flowing out from the second port below the outdoor heat exchanger 3, the liquid refrigerant passes through the second port on the left of the electromagnetic valve 4, passes through the second throttling device 6, flows into the compressor 1 from the refrigerant backflow port of the compressor 1, the compressor 1 is provided with a refrigerant evaporator, the liquid refrigerant flowing in from the refrigerant backflow port can be evaporated into a gas state, after passing through the first throttling device 5, the liquid refrigerant of the second branch flowing out from the outdoor heat exchanger 3 flows into the indoor heat exchanger 7 from the second port below the indoor heat exchanger 7 to absorb heat, and the liquid refrigerant is converted into the gas state from the liquid state.
Based on the air conditioner structure shown in fig. 3, the method for controlling the outlet air temperature of the air conditioner by controlling the refrigerant flow through the flow control passage according to the inner disc temperature and the target windshield includes steps a 1-A3:
step A1, comparing the target windshield with a preset windshield, and if the target windshield is lower than the preset windshield, acquiring the temperature of an inner disc of the indoor heat exchanger;
step A2, controlling the valve opening of the electromagnetic valve according to the temperature of the inner disc;
and step A3, controlling the flow of the return refrigerant flowing into the compressor through the flow control passage according to the valve opening of the electromagnetic valve so as to control the air outlet temperature of the air conditioner.
And acquiring a target windshield from an adjusting instruction triggered by a user, comparing the target windshield with a preset windshield, and further determining whether the temperature of an inner disc of the air conditioner needs to be monitored when the user selects a soft wind function. This is because, if the target windshield that obtains user's setting is higher than best preset temperature range, then the air-out temperature of air conditioner is higher, can not produce the condensation, if obtain that the target windshield temperature that user's setting is lower, then probably cause the air-out temperature of air conditioner too low to produce the condensation at the air outlet of air conditioner.
As described above, if the target windshield is lower than the preset windshield, the inner disc temperature of the air conditioner is detected, and the detection of the inner disc temperature of the air conditioner is cyclic, so that an adjusting mechanism of the outlet air temperature is determined, and the air outlet of the air conditioner is ensured not to generate condensation. The preset windshield can be a medium-low windshield of a preset windshield of an air conditioner, for example, when the air conditioner is preset with a high windshield, a medium windshield and a low windshield, each windshield corresponds to different wind speeds and different wind outlet temperatures, for example, the temperature corresponding to the low windshield is 0-10 ℃, the temperature corresponding to the medium windshield is 11-15 ℃, and the like, without specific limitation, when a target windshield corresponding to the temperature in an adjustment instruction triggered by a user is detected to be in the low windshield, when the air conditioner is in a refrigeration cycle, if the air conditioner is in a low windshield operation for a long time, condensation may be generated, that is, the temperature corresponding to the medium-low windshield is easy to generate condensation at an air outlet of the air conditioner, therefore, when the target windshield is lower than the preset windshield, the inner tray temperature of the air conditioner, that is, i.e., the wind outlet temperature of the air conditioner needs to be circularly monitored, so as to prevent the wind outlet temperature of the air conditioner from being lower than an optimal preset temperature range for a long time, thereby preventing the generation of condensation.
Based on the schematic diagram of the air conditioner structure shown in fig. 3, the temperature detection module is used to obtain the temperature of the inner panel of the air conditioner, if the temperature of the inner panel of the air conditioner is too low, condensation is easily formed at the air outlet of the air conditioner, in the air conditioner structure shown in fig. 3, during the refrigeration cycle, the flow rate of the refrigerant flowing into the indoor heat exchanger 7 through the branch where the first throttling device 5 is located is constant, the opening degree of the valve can be controlled to be increased by the electromagnetic valve 4, the flow rate of the refrigerant flowing into the compressor 1 directly is increased by the electromagnetic valve 4 in the liquid refrigerant flowing out of the outdoor heat exchanger 3, the flow rate of the refrigerant flowing into the indoor heat exchanger 7 from the second branch where the first throttling device 5 is located is decreased, the air outlet temperature can be increased by decreasing the refrigerant participating in the refrigeration cycle, conversely, if the temperature of the inner panel of the air conditioner is too high, the refrigeration effect can be influenced, the electromagnetic valve 4 can be controlled to reduce the opening degree of the valve, the flow of the refrigerant flowing into the compressor 1 from the first branch is reduced, the flow of the refrigerant flowing into the indoor heat exchanger 7 through the second branch where the first throttling device 5 is located and participating in the refrigeration cycle is increased, the air outlet temperature is reduced, and the refrigeration effect of the air conditioner is ensured.
Wherein, the step A1 comprises the steps B1-B4:
step B1, comparing the inner disc temperature with a first preset threshold;
step B2, if the inner disc temperature is lower than the first preset threshold, acquiring a first target duration that the inner disc temperature is continuously lower than the first preset threshold;
step B3, comparing the first target time length with the first preset time length;
and step B4, if the first target time length is longer than the first preset time length, adjusting the valve opening of the electromagnetic valve to a first preset opening.
When the inner disc temperature of the air conditioner is monitored, the inner disc temperature of the air conditioner is circularly acquired in real time through a temperature detection module on the air conditioner, when the inner disc temperature of the air conditioner is detected to be lower than a first preset threshold value, a first target time length that the inner disc temperature of the air conditioner is lower than the first preset threshold value is acquired, the first target time length is compared with the first preset time length, and if the first target time length is longer than the first preset time length, the electromagnetic valve is controlled to be at a first preset opening degree. For example, based on the schematic diagram of the air conditioner shown in fig. 3, if the first preset threshold is 11 ℃, the first preset duration is 10 minutes, and if it is detected that the temperature of the inner panel is continuously lower than 11 ℃ for 10 minutes, the valve opening of the electromagnetic valve is adjusted to a first preset opening, the flow rate of the returned refrigerant is increased, so that the refrigerant flow rate participating in the refrigeration cycle is reduced, and the outlet air temperature, that is, the temperature of the inner panel of the air conditioner is increased. And if the first target time length is less than the first preset time length, keeping the valve opening of the electromagnetic valve at the current opening, namely controlling the electromagnetic valve not to act.
After the step B4, the method also comprises steps B5-B7:
step B5, obtaining the inner disc temperature, comparing the inner disc temperature with the first preset threshold, and if the inner disc temperature is higher than or equal to the first preset threshold, comparing the inner disc temperature with a second preset threshold, wherein the second preset threshold is higher than the first preset threshold;
step B6, if the inner disc temperature is lower than the second preset threshold, obtaining a second target duration that the inner disc temperature is continuously lower than the second preset threshold, and comparing the second target duration with a second preset duration;
and step B7, if the second target time length is greater than the second preset time length, adjusting the valve opening of the electromagnetic valve to a second preset opening.
When the acquired inner disc temperature of the air conditioner is higher than or equal to a first preset temperature, such as 11 ℃, but is lower than a second preset threshold, controlling the opening of the electromagnetic valve to be a second preset opening, acquiring a second target duration when the inner disc temperature of the air conditioner is higher than or equal to the first preset threshold but lower than the second preset threshold through circulating monitoring of the inner disc temperature of the air conditioner, comparing the second target duration with the second preset duration, and if the second target duration is greater than the second preset duration, controlling the electromagnetic valve to be the second preset opening. For example, if the second preset threshold is 14 ℃ and the second target time period is 2 hours, when the inner disc temperature of the air conditioner is detected to be between 11 ℃ and 14 ℃ for 2 hours continuously, the electromagnetic valve is controlled to be at the second preset opening degree, and then the inner disc temperature of the air conditioner is increased. Controlling the solenoid valve to be the second preset opening degree means that the valve opening degree of the solenoid valve is adjusted to the second preset opening degree, the flow of the backflow refrigerant is increased, the flow of the refrigerant participating in the refrigeration cycle is reduced, and the air outlet temperature of the air conditioner, namely the temperature of the inner disc, is increased. If the second target duration is less than the third preset duration, the valve opening of the electromagnetic valve is still kept unchanged, the electromagnetic valve is controlled to be not actuated, the obtained inner disc temperature can be the first preset opening based on the valve opening of the electromagnetic valve, namely, after the valve of the electromagnetic valve is adjusted to be the first preset opening for a period of time, the air outlet temperature of the air conditioner is increased, and the obtained inner disc temperature is increased and is higher than the first preset threshold.
Further, after step B7, steps B8-B10 are included:
step B8, acquiring the inner disc temperature, and comparing the inner disc temperature with the second preset threshold value;
step B9, if the inner disc temperature is higher than or equal to the second preset threshold, obtaining a third target duration that the inner disc temperature is continuously higher than or equal to the second preset threshold, and comparing the third target duration with a third preset duration;
and step B10, if the third target time length is longer than the third preset time length, adjusting the valve opening of the electromagnetic valve to a third preset opening.
If the temperature of the inner disc of the air conditioner is detected to be higher than or equal to a second preset threshold value, acquiring a third target time length of the temperature of the inner disc of the air conditioner which is higher than or equal to the second preset threshold value and higher than or equal to the second preset threshold value through circulating monitoring of the temperature of the inner disc of the air conditioner, comparing the third target time length with a third preset time length, if the third target time length is longer than the third preset time length, controlling the opening of the electromagnetic valve to be a third preset opening degree, if the second preset threshold value is 14 ℃, if the third target time length is 30 minutes, if the temperature of the inner disc of the air conditioner is detected to be continuously higher than or equal to 14 ℃ for 30 minutes, controlling the opening of the electromagnetic valve to be the third preset opening degree, wherein the controlling the opening degree of the electromagnetic valve is the third preset opening degree, controlling the flow rate of refrigerant participating in circulation by the valve opening degree of the electromagnetic valve, and adjusting the valve opening degree of the electromagnetic valve to be the third preset opening degree, thereby increasing the flow of the refrigerant participating in the refrigeration cycle and reducing the temperature of the inner disc to the temperature range corresponding to the target windshield. The third preset opening degree may be a fully closed state, that is, all refrigerants participate in the refrigeration cycle to reduce the outlet air temperature to a temperature range corresponding to the target windshield, but when the air conditioner is in the soft wind function, the electromagnetic valve is still kept in the power-on starting state when being in the fully closed or fully open state, so as to adjust the temperature of the inner disc in time. The electromagnetic valve does not act, namely the valve opening of the electromagnetic valve is not adjusted:
in the first case: the temperature of the inner disc is lower than a first preset value, but the first target time length is less than or equal to a first preset time length;
in the second case: the temperature of the inner disc is between a first preset threshold and a second preset threshold, but the second target time length is less than or equal to the second preset time length;
in the third case: the temperature of the inner disc is higher than a second preset threshold, but a third target time length higher than the second preset threshold is less than or equal to a third preset time length;
in a fourth case: and the target windshield obtained and set by the user is higher than the preset windshield.
It should be noted that, in this embodiment, the first preset threshold and the second preset threshold may include multiple values or range values, and correspondingly, the first opening, the second opening, and the third opening of the electromagnetic valve may include multiple opening preset values, and the opening of the electromagnetic valve may be controlled by adjusting the opening of the electromagnetic valve according to a gradient of an increase or a decrease of the temperature of the inner panel of the air conditioner, for example, the valve of the electromagnetic valve is adjusted to be smaller (or larger) by 10% every time the temperature of the inner panel of the air conditioner increases (or decreases) by 3 ℃, and specific values of the first preset threshold and the second preset threshold and the opening of the electromagnetic valve corresponding to the first preset threshold and the second preset threshold are not specifically limited herein.
If it is detected that the air conditioner corresponding to the adjustment instruction starts the soft wind function and before the air conditioner performs soft wind control, the current wind speed and the inner disc temperature of the air conditioner need to be acquired first, and the acquired wind speed and the inner disc temperature are compared with preset control conditions, for example, "the wind speed of the air conditioner is higher than the medium wind speed and the inner disc temperature is higher than 11 degrees centigrade" and the like, which are not specifically limited herein, and if the acquired current wind speed and the inner disc temperature of the air conditioner meet the preset control conditions, the electromagnetic valve 4 may be powered on and opened. The flow of gas or liquid is controlled by adjusting the opening degree of the control electromagnetic valve 4, and because the heat transfer is mainly completed through the refrigerant in the refrigeration cycle of the air conditioner, the temperature of the soft wind function is controlled by controlling the flow of the refrigerant when the soft wind function is realized. If the acquired current wind speed and the acquired inner disc temperature of the air conditioner do not meet the preset control conditions, the wind speed and the inner disc temperature are adjusted, and after the acquired current wind speed and the acquired inner disc temperature of the air conditioner meet the preset control conditions, the soft wind function is started, and the electromagnetic valve 4 is powered on and started. If the soft wind function of the air conditioner is not detected according to the adjusting instruction triggered by the user, the electromagnetic valve on the refrigerant return passage can be kept in a power-off closing state.
In this embodiment, a flow control path for a refrigerant is added in a refrigerant circulation loop of an air conditioner to control the refrigerant flow participating in temperature regulation in an indoor heat exchanger of the air conditioner, so as to control the outlet air temperature of the air conditioner, wherein the air conditioner comprises the refrigerant circulation loop and the flow control path, the refrigerant circulation loop comprises a four-way valve, the indoor heat exchanger, a first throttling device, an outdoor heat exchanger and a compressor, and the flow control path is connected in parallel with the first throttling device. According to the obtained adjusting instruction, if the air conditioner corresponding to the adjusting instruction is detected to start a soft wind function, a target windshield set by a user is obtained from the adjusting instruction, the temperature of an inner disc of an indoor heat exchanger of the air conditioner is detected, and the valve opening of an electromagnetic valve in a flow control passage is controlled according to the temperature of the inner disc and the target windshield to control the flow of a refrigerant passing through the flow control passage, so that the flow of the refrigerant participating in temperature adjustment in the indoor heat exchanger of the air conditioner is controlled, the air outlet temperature of the air conditioner is controlled, and the generation of condensation can be effectively prevented through the control of the air outlet temperature of the air conditioner. The method comprises the steps of obtaining a target windshield set by a user when the air conditioner is detected to be started with a soft wind function, detecting the temperature of an inner disc of the air conditioner, controlling the valve opening of an electromagnetic valve in a flow control passage according to the temperature of the inner disc of the air conditioner and the target windshield set by the user, controlling the flow of a refrigerant by controlling the valve opening of the electromagnetic valve, controlling the air outlet temperature of the air conditioner, ensuring that the air outlet temperature of the air conditioner cannot cause condensation, and applying the soft wind function to the fixed frequency air conditioner.
Further, on the basis of the above-described embodiment of the present invention, a second embodiment of the temperature control method of the present invention is proposed.
This embodiment is a step of the first embodiment, which is a refinement of step S30, and the difference between this embodiment and the above-described embodiment of the present invention is: the flow control passage comprises the electromagnetic valve and the second throttling device, one end of the flow control passage is connected with the outdoor heat exchanger, and the other end of the flow control passage is connected with the indoor heat exchanger;
in step S30, controlling the refrigerant flow rate through the flow rate control path according to the inner pan temperature and the target damper to control the outlet air temperature of the air conditioner, including steps C1-C3:
step C1, comparing the target windshield with a preset windshield, and if the target windshield is lower than the preset windshield, acquiring the temperature of an inner disc of the indoor heat exchanger;
step C2, controlling the valve opening of the electromagnetic valve according to the inner disc temperature and the target windshield;
and step C3, controlling the flow of the circulating refrigerant flowing into the indoor heat exchanger through the flow control passage according to the valve opening of the electromagnetic valve so as to control the air outlet temperature of the air conditioner.
In this embodiment, before the step of controlling the refrigerant flow passing through the flow control passage according to the inner disc temperature and the target damper, an actual damper of the air conditioner needs to be detected, the actual damper is compared with the target damper set by the user, and if the actual damper is different from the target damper set by the user, the damper of the air conditioner is adjusted to the target damper set by the user. Then compare the target windshield that the user set for with predetermineeing the windshield, if the target windshield that the user set for is higher than predetermineeing the windshield, then the air-out temperature that the target that the user set for corresponds can not produce the condensation, then need not detect and control the air-out temperature of air conditioner again, if the target windshield that the user set for is less than predetermineeing the windshield, then the air-out temperature of air conditioner has the possibility that produces the condensation, needs to detect and regulation control the air-out temperature of air conditioner. The method comprises the steps of obtaining and detecting the inner disc temperature of the air conditioner, further determining the actual air outlet temperature of the air conditioner, and determining a control mechanism of the air outlet temperature according to the actual air outlet temperature of the air conditioner.
Referring to fig. 4, fig. 4 is another schematic structural diagram of an air conditioner according to a temperature control method of the present invention, where the air conditioner includes a compressor 1, a four-way valve 2, an outdoor heat exchanger 3, an electromagnetic valve 4, a first throttling device 5, a second throttling device 6, and an indoor heat exchanger 7, in the air conditioner structure illustrated in fig. 3, a second port on the right side of the second throttling device 6 is connected to a refrigerant return port of the compressor 1, which is different from the air conditioner structure illustrated in fig. 3, and in the air conditioner structure illustrated in fig. 4, the second port on the right side of the second throttling device 6 is connected to a second port below the indoor heat exchanger 7, and the compressor 1 may not need to be provided with a refrigerant return port, that is, in the schematic structural diagram of the air conditioner illustrated in fig. 4, the refrigerant flow rate may be controlled without depending on the arrangement of a refrigerant return passage. In the air conditioner structure shown in fig. 4, the flow control path is connected between the outdoor heat exchanger and the indoor heat exchanger of the air conditioner in a second manner, the difference between the refrigerant circulation in the air conditioner structure shown in fig. 4 and the air conditioner structure shown in fig. 3 is that the liquid refrigerant flowing out of the second port below the outdoor heat exchanger 3 is still divided into two paths, wherein, a passage between a second port below the outdoor heat exchanger 3 and a second port below the indoor heat exchanger 7, together with the electromagnetic valve 4 and the second throttling device 6, forms a first branch of liquid refrigerant, a passage between a second port below the outdoor heat exchanger 3 and a second port below the indoor heat exchanger 7 for controlling the flow of the refrigerant through the electromagnetic valve 4 forms a second branch of the liquid refrigerant together with the first throttling device 5, however, the two refrigerant paths are finally converged into one path, and the two refrigerant paths jointly flow into the indoor heat exchanger 7 from the second port below the indoor heat exchanger 7 to absorb heat.
In the air conditioner structure shown in fig. 4, the same as the air conditioner structure shown in fig. 3, the flow rate of the refrigerant flowing into the indoor heat exchanger 7 through the branch where the first throttling device 5 is located is constant, and when the temperature of the inner disk of the air conditioner is lower than the second preset value and the time length of the refrigerant lower than the second preset value exceeds the second preset time length, the electromagnetic valve 4 may be controlled to decrease the valve opening, so as to reduce the refrigerant flow flowing into the indoor heat exchanger 7 through the first branch where the electromagnetic valve 4 is located, thereby reducing the total refrigerant flow of the refrigerant flowing into the indoor heat exchanger 7 and participating in the refrigeration cycle, and achieving the effect of increasing the air outlet temperature of the air conditioner. When the temperature of the inner disc of the air conditioner is higher than a first preset value and the time length of the inner disc is higher than the first preset value and exceeds a first preset time length, the electromagnetic valve 4 can be controlled to increase the opening of the valve, the flow of the refrigerant flowing into the indoor heat exchanger 7 through the first branch is increased, the total flow of the refrigerant flowing into the indoor heat exchanger 7 and participating in the refrigeration cycle is increased, and the purpose of reducing the air outlet temperature of the air conditioner is achieved. The structure shown in fig. 3 and 4 is to control the refrigerant flow through a solenoid valve, and the control of the refrigerant flow may be realized through other valves, which are not limited herein, and it will be understood by those skilled in the art that the structure shown in fig. 3 and 4 does not constitute a limitation of the air conditioner, and may include more or less components than those shown, or combine some components, or arrange different components.
As described above, the circulating monitoring of the inner tray temperature of the air conditioner is to control the temperature of the air conditioner within an optimal temperature range corresponding to a target windshield set by a user, which does not affect the cooling effect of the air conditioner, but can prevent the generation of condensation, and the optimal temperature range may be preset, for example, 14 ℃ to 23 ℃, and is not specifically limited herein, and according to the inner tray temperature of the air conditioner, the optimal preset temperature range is compared, if the inner tray temperature of the air conditioner is higher than the optimal preset temperature range, the outlet air temperature needs to be reduced, so the refrigerant flow participating in the cooling cycle needs to be increased, the opening degree of the electromagnetic valve 4 is controlled to increase the refrigerant flow, if the temperature is lower than the optimal preset temperature range, it is determined that the temperature is required to be raised, the generation of condensation is prevented, and in the cooling cycle, if the temperature is to be lowered, the flow of the refrigerant needs to be reduced, therefore, the solenoid valve 4 needs to be controlled to reduce the refrigerant flow rate, thereby increasing the outlet air temperature.
The control of the electromagnetic valve 4 on the refrigerant flow is realized by adjusting the opening of the valve, specifically, the relationship between the opening of the valve and the refrigerant flow needs to be determined according to the position and the connection relationship of the electromagnetic valve 4 in the refrigerant circulation process, which may be, but is not limited to, the structure shown in fig. 3 and 4 in this embodiment, and it should be noted that the controlled refrigerant flow refers to the refrigerant flow participating in the refrigeration cycle. For example, as shown in fig. 3, by adding a return line for the refrigerant and installing the solenoid valve 4 on the newly added return line, the refrigerant can directly return to the compressor 1, and the outlet air temperature of the air conditioner can be increased by reducing the flow rate of the refrigerant involved in the refrigeration without participating in the process of the refrigeration cycle, in this case, the magnitude of the refrigerant flow rate is in inverse proportion to the opening degree of the solenoid valve 4, and the larger the valve opening degree of the solenoid valve 4 is, the larger the flow rate of the refrigerant directly returned is, the smaller the flow rate of the refrigerant involved in the refrigeration cycle is. In the structure shown in fig. 4, the electromagnetic valve 4 is arranged on the added refrigerant circulation pipeline, two paths of refrigerants are finally converged into one path, the refrigerant separated by the newly added circulation pipeline still participates in the whole process of the refrigeration cycle, and the flow rate of the refrigerant on the newly added circulation pipeline is controlled by the electromagnetic valve 4, so that the opening degree of the electromagnetic valve 4 is in direct proportion to the flow rate of the refrigerant, that is, the larger the valve opening degree of the electromagnetic valve 4 is, the larger the flow rate of the refrigerant participating in the refrigeration cycle is, and the more obvious the refrigeration effect is.
Based on the schematic diagram of the air conditioner structure shown in fig. 4, taking the refrigeration cycle of the air conditioner as an example, after the air conditioner starts the soft wind function, and according to the obtained target windshield set by the user, the temperature of the inner disc of the air conditioner needs to be monitored, so as to control the outlet air temperature of the air conditioner. Referring to fig. 5, fig. 5 is a schematic view illustrating a flow of adjusting a valve opening of an electromagnetic valve according to an inner pan temperature of an air conditioner, in fig. 5, the inner pan temperature of the air conditioner is cyclically monitored, the valve opening of the electromagnetic valve 4 is controlled to further control a refrigerant flow passing through a flow control path to increase an outlet air temperature, the inner pan temperature of the air conditioner is compared with a first preset threshold, if the inner pan temperature is lower than the first preset threshold, a first target time duration that the inner pan temperature is lower than the first preset threshold is obtained, the first target time duration is compared for the first preset time duration, if the first target time duration is longer than the first preset time duration, the valve opening of the electromagnetic valve 4 is reduced to the first preset opening, the refrigerant flow passing through the flow control path is reduced, thereby reducing the refrigerant flow flowing into an indoor heat exchanger 7, the refrigerant flow participating in a refrigeration cycle, and further increasing the outlet air temperature, and if the obtained inner pan temperature is higher than or equal to the first preset threshold, and comparing the temperature of the inner disc with a second preset threshold, if the temperature of the inner disc is lower than the second preset threshold, acquiring a second target time length that the temperature of the inner disc is higher than or equal to the first preset threshold but lower than the second preset threshold, and if the second target time length is greater than the second preset time length, reducing the valve opening of the electromagnetic valve 4 to the second preset opening, further reducing the flow of the refrigerant which passes through the flow control passage and participates in the refrigeration cycle, and further improving the air outlet temperature.
If the obtained inner disc temperature is higher than or equal to a second preset threshold value, a third target time length that the inner disc temperature is higher than the second preset threshold value is obtained, and if the third target time length is longer than the third preset time length, the air outlet temperature of the air conditioner is proved to be higher, for example, when the air outlet temperature corresponding to a target windshield set by a user is 18 ℃ to 20 ℃, the obtained inner disc temperature exceeds 21 ℃ for 30 minutes continuously, and if the air outlet temperature is continuously higher than 21 ℃, the refrigeration effect is affected, therefore, the valve opening of the electromagnetic valve 4 is adjusted to the third preset opening, the total flow of the refrigerant flowing into the indoor heat exchanger 7 through the flow control passage is increased, the air outlet temperature is reduced, then the inner disc temperature of the air conditioner is continuously monitored and obtained, the valve size of the electromagnetic valve in the flow control passage is controlled by comparing the inner disc temperature with the preset threshold value, and the flow participating in the refrigeration cycle is controlled, the air outlet temperature of the air conditioner is indirectly controlled by controlling the flow of the refrigerant participating in the refrigeration cycle. Note that, in some cases, the solenoid valve does not operate, that is, the valve opening degree of the solenoid valve is not adjusted:
in the first case: the temperature of the inner disc is lower than a first preset value, but the first target time length is less than or equal to a first preset time length;
in the second case: the temperature of the inner disc is between a first preset threshold and a second preset threshold, but the second target time length is less than or equal to the second preset time length;
in a third case: the temperature of the inner disc is higher than a second preset threshold, but a third target time length higher than the second preset threshold is less than or equal to a third preset time length;
in a fourth case: and the target windshield obtained and set by the user is higher than the preset windshield.
It should be noted that, in this embodiment, the first preset threshold and the second preset threshold may include multiple values or range values, and correspondingly, the first opening, the second opening, and the third opening of the electromagnetic valve may include multiple opening preset values, and the opening of the electromagnetic valve may be controlled by adjusting the opening of the electromagnetic valve according to a gradient of an increase or a decrease of the temperature of the inner panel of the air conditioner, for example, the valve of the electromagnetic valve is adjusted to be smaller (or larger) by 10% every time the temperature of the inner panel of the air conditioner increases (or decreases) by 3 ℃, and specific values of the first preset threshold and the second preset threshold and the opening of the electromagnetic valve corresponding to the first preset threshold and the second preset threshold are not specifically limited herein.
In this embodiment, according to the target windshield set by the user, the inner disc temperature is monitored in a circulating manner, so that the outlet air temperature of the air conditioner can be determined in time, and according to the target windshield set by the user, the flow of the refrigerant which participates in temperature regulation and flows into the indoor heat exchanger of the air conditioner through the flow control passage is controlled by controlling the opening degree of the valve of the electromagnetic valve, so that the outlet air temperature of the air conditioner is adjusted, the outlet air temperature is kept in the optimal temperature range corresponding to the target windshield set by the user, the refrigeration effect cannot be influenced, the air outlet of the air conditioner can be prevented from generating condensation, and the soft wind function can be applied to the fixed frequency air conditioner.
In addition, the invention also provides an air conditioner which is characterized by comprising a refrigerant circulation loop and a flow control passage, wherein the refrigerant circulation loop comprises a four-way valve, an indoor heat exchanger, a first throttling device, an outdoor heat exchanger and a compressor, the flow control passage is connected with the first throttling device in parallel, the flow control passage is used for controlling the flow of the refrigerant passing through the refrigerant circulation loop according to a control instruction after the air conditioner starts a soft wind function so as to control the air outlet temperature of the air conditioner, and the control instruction is triggered by an adjusting instruction received by the air conditioner.
Further, the compressor is provided with a refrigerant backflow port, the refrigerant circulation loop is formed by sequentially connecting the four-way valve, the indoor heat exchanger, the first throttling device, the outdoor heat exchanger and the compressor, the flow control path is formed by sequentially connecting the outdoor heat exchanger, the electromagnetic valve, the second throttling device and the compressor, one end of the electromagnetic valve is connected with an air outlet of the outdoor heat exchanger, the other end of the electromagnetic valve is connected with the second throttling device, and the other end of the second throttling device is connected with the refrigerant backflow port of the compressor.
Further, the refrigerant circulation loop is formed by sequentially connecting the four-way valve, the indoor heat exchanger, the first throttling device, the outdoor heat exchanger and the compressor, the flow control passage is formed by sequentially connecting the outdoor heat exchanger, the electromagnetic valve, the second throttling device and the indoor heat exchanger, one end of the electromagnetic valve is connected with an air outlet of the outdoor heat exchanger, the other end of the electromagnetic valve is connected with the second throttling device, and the other end of the second throttling device is connected with an air inlet of the indoor heat exchanger.
The specific embodiment of the air conditioner of the present invention is basically the same as the embodiments of the temperature control method, and is not described herein again.
In addition, an embodiment of the present invention further provides a computer-readable storage medium, where an air conditioner temperature control program is stored, and when the air conditioner temperature control program is executed by a processor, the air conditioner temperature control program implements operations in the air conditioner temperature control method provided in the foregoing embodiment.
The specific embodiment of the computer-readable storage medium of the present invention is substantially the same as the embodiments of the air conditioner temperature control method described above, and is not repeated herein.
It should be noted that, in this document, relational terms such as first and second, and the like are only used for distinguishing one entity/operation/object from another entity/operation/object, and do not necessarily require or imply any actual relationship or order between these entities/operations/objects; the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or system that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or system. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or system that comprises the element.
For the apparatus embodiment, since it is substantially similar to the method embodiment, it is described relatively simply, and reference may be made to some descriptions of the method embodiment for relevant points. The above-described apparatus embodiments are merely illustrative, in that elements described as separate components may or may not be physically separate. Some or all of the modules can be selected according to actual needs to achieve the purpose of the scheme of the invention. One of ordinary skill in the art can understand and implement without inventive effort.
The above-mentioned serial numbers of the embodiments of the present invention are only for description, and do not represent the advantages and disadvantages 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 substantially or partially 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 mobile phone, a computer, a server, an air conditioner, or a network device) to execute the temperature control method according to the embodiments of the present invention.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention, and all equivalent structures or equivalent processes performed by the present invention or directly or indirectly applied to other related technical fields are also included in the scope of the present invention.

Claims (6)

1. The temperature control method of the air conditioner is characterized in that the air conditioner comprises a refrigerant circulation loop and a flow control passage, wherein the refrigerant circulation loop comprises a four-way valve, an indoor heat exchanger, a first throttling device, an outdoor heat exchanger and a compressor, the flow control passage is connected with the first throttling device in parallel, and the temperature control method comprises the following steps:
when the air conditioner is in a refrigeration cycle mode, acquiring an adjusting instruction, and if the air conditioner is detected to start a soft wind function, acquiring a target windshield set by a user from the adjusting instruction;
detecting the temperature of an inner disc of the indoor heat exchanger;
controlling the flow of the refrigerant passing through the flow control passage according to the temperature of the inner disc and the target windshield so as to control the air outlet temperature of the air conditioner;
the flow control passage comprises an electromagnetic valve and a second throttling device, one end of the flow control passage is connected with the outdoor heat exchanger, the other end of the flow control passage is connected with the compressor, and the step of controlling the flow of the refrigerant passing through the flow control passage according to the temperature of the inner disc and the target windshield so as to control the air outlet temperature of the air conditioner comprises the following steps:
comparing the target windshield with a preset windshield, and if the target windshield is lower than the preset windshield, acquiring the temperature of an inner disc of the indoor heat exchanger, wherein the preset windshield is a medium-low windshield;
controlling the valve opening of the electromagnetic valve according to the temperature of the inner disc;
controlling the flow of the return refrigerant flowing into the compressor through the flow control passage according to the valve opening of the electromagnetic valve so as to control the air outlet temperature of the air conditioner;
the step of controlling the valve opening of the electromagnetic valve according to the temperature of the inner disc comprises the following steps:
comparing the inner disc temperature with a first preset threshold;
if the inner disc temperature is lower than the first preset threshold, acquiring a first target duration that the inner disc temperature is continuously lower than the first preset threshold;
comparing the first target time length with a first preset time length;
if the first target time length is longer than the first preset time length, adjusting the valve opening of the electromagnetic valve to a first preset opening;
the step of adjusting the valve opening degree of the electromagnetic valve to a first preset opening degree includes:
acquiring the temperature of the inner disc, comparing the temperature of the inner disc with the first preset threshold, and if the temperature of the inner disc is higher than or equal to the first preset threshold, comparing the temperature of the inner disc with a second preset threshold, wherein the second preset threshold is higher than the first preset threshold;
if the inner disc temperature is lower than the second preset threshold, acquiring a second target duration that the inner disc temperature is continuously lower than the second preset threshold, and comparing the second target duration with a second preset duration;
if the second target time length is longer than the second preset time length, adjusting the valve opening of the electromagnetic valve to a second preset opening;
the step of adjusting the valve opening of the electromagnetic valve to a second preset opening includes:
acquiring the temperature of the inner disc, and comparing the temperature of the inner disc with the second preset threshold value;
if the inner disc temperature is higher than or equal to the second preset threshold, obtaining a third target time length that the inner disc temperature is continuously higher than or equal to the second preset threshold, and comparing the third target time length with a third preset time length;
and if the third target time length is greater than the third preset time length, adjusting the valve opening of the electromagnetic valve to a third preset opening.
2. The temperature control method of an air conditioner according to claim 1, wherein the flow control path includes the solenoid valve and the second throttling means, one end of the flow control path is connected to the outdoor heat exchanger, and the other end thereof is connected to the indoor heat exchanger, and the step before controlling the flow of the refrigerant passing through the flow control path according to the temperature of the inner panel and the target damper includes:
detecting an actual windshield of the air conditioner;
comparing the actual windshield to the target windshield;
and if the actual windshield is different from the target windshield, adjusting the windshield of the air conditioner to be the target windshield.
3. An air conditioner is characterized in that the air conditioner controls the temperature by adopting the air conditioner temperature control method according to any one of claims 1 to 2, and the air conditioner comprises a refrigerant circulation loop and a flow control path, wherein the refrigerant circulation loop comprises a four-way valve, an indoor heat exchanger, a first throttling device, an outdoor heat exchanger and a compressor, the flow control path is connected with the first throttling device in parallel, the flow control path is used for controlling the flow of refrigerant passing through the refrigerant circulation loop according to a control instruction after the air conditioner starts a soft wind function so as to control the air outlet temperature of the air conditioner, and the control instruction is triggered by an adjusting instruction received by the air conditioner.
4. The air conditioner according to claim 3, wherein the compressor is provided with a refrigerant return port, the refrigerant circulation loop is formed by sequentially connecting the four-way valve, the indoor heat exchanger, the first throttling device, the outdoor heat exchanger and the compressor, the flow control path is formed by sequentially connecting the outdoor heat exchanger, an electromagnetic valve, a second throttling device and the compressor, one end of the electromagnetic valve is connected with the air outlet of the outdoor heat exchanger, the other end of the electromagnetic valve is connected with the second throttling device in the flow control path, and the other end of the second throttling device is connected with the refrigerant return port of the compressor.
5. The air conditioner according to claim 3, wherein the refrigerant circulation loop is formed by sequentially connecting the four-way valve, the indoor heat exchanger, the first throttling device, the outdoor heat exchanger and the compressor, the flow control path is formed by sequentially connecting the outdoor heat exchanger, an electromagnetic valve, a second throttling device and the indoor heat exchanger, one end of the electromagnetic valve is connected with an air outlet of the outdoor heat exchanger, the other end of the electromagnetic valve is connected with the second throttling device, and the other end of the second throttling device is connected with an air inlet of the indoor heat exchanger.
6. A computer-readable storage medium, characterized in that the computer-readable storage medium has stored thereon an air conditioner temperature control program that, when executed by a processor, implements the steps of the air conditioner temperature control method according to any one of claims 1 to 2.
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