CN114688694A - Air conditioner, control method thereof and readable storage medium - Google Patents

Air conditioner, control method thereof and readable storage medium Download PDF

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Publication number
CN114688694A
CN114688694A CN202011644706.3A CN202011644706A CN114688694A CN 114688694 A CN114688694 A CN 114688694A CN 202011644706 A CN202011644706 A CN 202011644706A CN 114688694 A CN114688694 A CN 114688694A
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CN
China
Prior art keywords
temperature
throttle valve
air conditioner
air
heat exchanger
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Pending
Application number
CN202011644706.3A
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Chinese (zh)
Inventor
黄贵华
陈锦敏
谢李高
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Midea Group Co Ltd
GD Midea Air Conditioning Equipment Co Ltd
Original Assignee
Midea Group Co Ltd
GD Midea Air Conditioning Equipment Co Ltd
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Publication date
Application filed by Midea Group Co Ltd, GD Midea Air Conditioning Equipment Co Ltd filed Critical Midea Group Co Ltd
Priority to CN202011644706.3A priority Critical patent/CN114688694A/en
Publication of CN114688694A publication Critical patent/CN114688694A/en
Pending legal-status Critical Current

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • 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
    • F24F11/88—Electrical aspects, e.g. 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
    • F24F11/89—Arrangement or mounting of control or safety devices
    • 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
    • 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
    • F25B39/00—Evaporators; Condensers
    • 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
    • F25B43/00—Arrangements for separating or purifying gases or liquids; Arrangements for vaporising the residuum of liquid refrigerant, e.g. by heat
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2110/00—Control inputs relating to air properties
    • F24F2110/10—Temperature

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

Abstract

The invention discloses an air conditioner, a control method thereof and a readable storage medium, wherein the control method of the air conditioner comprises the following steps: when the air conditioner is in a heating mode, adjusting the opening of the first throttle valve to enable the first air outlet temperature of the first air outlet to be higher than the second air outlet temperature of the second air outlet; and controlling the first air guide piece to rotate by a first preset angle from a closed position, and controlling the second air guide piece to rotate by a second preset angle from the closed position, wherein the first preset angle is larger than the second preset angle. This scheme is passed through first choke valve throttles for the air conditioner can blow off the air current of different temperatures, satisfies the temperature demand of the different health positions of user, thereby improves user's travelling comfort.

Description

Air conditioner, control method thereof and readable storage medium
Technical Field
The invention relates to the technical field of air conditioners, in particular to an air conditioner, a control method of the air conditioner and a readable storage medium.
Background
In the prior art, when the air conditioner operates a heating function, different comfortable temperatures are needed for different body parts of a user, for example, the feet of the user can feel comfortable by hot air with higher temperature than the face of the user, but the comfort of the user is reduced because the temperature of the hot air blown out by the air conditioner is single.
Disclosure of Invention
The invention mainly aims to provide an air conditioner, aiming at solving the problem that the comfort level of a user is reduced due to single temperature of hot air blown out by the air conditioner.
In order to achieve the above object, the present invention provides an air conditioner, including an outdoor unit and an indoor unit, wherein the indoor unit includes: the air conditioner comprises a shell, a first air duct and a second air duct are formed in the shell, a first air inlet and a first air outlet are formed in the shell of the first air duct, and a second air inlet and a second air outlet are formed in the shell of the second air duct; the first air guide piece is rotatably arranged on the shell so as to adjust the air outlet direction of the first air outlet; the second air guide piece can be rotatably arranged on the shell to adjust the air outlet direction of the second air outlet; the first heat exchanger is arranged in the first air duct; the second heat exchanger is arranged in the second air duct; a first throttling valve in series between the first heat exchanger and the second heat exchanger.
Furthermore, the outdoor unit comprises a four-way valve, a compressor, an outdoor heat exchanger and a gas-liquid separator, wherein the D end of the four-way valve is communicated with the discharge port of the compressor, the C end of the four-way valve is communicated with the first end of the outdoor heat exchanger, the E end of the four-way valve is communicated with the second end of the outdoor heat exchanger through the first heat exchanger, the first throttling valve, the second heat exchanger and the gas-liquid separator in sequence, the gas-liquid separator is further communicated with the inlet of the liquid storage tank of the compressor, and the S end of the four-way valve is communicated with the inlet of the liquid storage tank of the compressor.
Further, the outdoor unit further includes: and the gas-liquid separator is communicated with an inlet of a liquid storage tank of the compressor through the switch valve.
Further, the outdoor unit further includes: a second throttling valve through which the gas-liquid separator communicates with a second end of the outdoor heat exchanger.
In order to achieve the above object, the present invention further provides a control method of an air conditioner, applied to the air conditioner as described in any one of the above, the control method of the air conditioner comprising:
when the air conditioner is in a heating mode, adjusting the opening of the first throttle valve to enable the first air outlet temperature of the first air outlet to be higher than the second air outlet temperature of the second air outlet;
and controlling the first air guide piece to rotate by a first preset angle from a closed position, and controlling the second air guide piece to rotate by a second preset angle from the closed position, wherein the first preset angle is larger than the second preset angle.
Further, the adjusting the opening degree of the first throttle valve includes:
acquiring a temperature difference between a first coil temperature of the first heat exchanger and a second coil temperature of the second heat exchanger;
obtaining a target temperature difference between a first coil temperature of the first heat exchanger and a second coil temperature of the second heat exchanger
And adjusting the opening of the first throttle valve according to the temperature difference and the target temperature difference.
Further, the adjusting the opening degree of the first throttle valve according to the temperature difference and the target temperature difference includes:
increasing the opening of the first throttle valve when the temperature difference is greater than the target temperature difference;
when the temperature difference is smaller than the target temperature difference, the opening degree of the first throttle valve is reduced.
Further, the step of obtaining a target temperature difference between a first coil temperature of the first heat exchanger and a second coil temperature of the second heat exchanger includes:
acquiring the current indoor temperature and the outdoor coil temperature of the outdoor unit;
respectively acquiring a corresponding first reference value, a second reference value and a third reference value according to the first coil temperature, the current indoor temperature and the outdoor coil temperature;
and acquiring the target temperature difference according to the first reference value, the second reference value and the third reference value.
Further, the adjusting the opening degree of the first throttle valve includes:
acquiring the current indoor temperature;
acquiring a first target temperature area according to the current indoor temperature;
and adjusting the opening degree of the first throttle valve according to the first target temperature zone and the temperature of the second coil pipe, so that the temperature of the second coil pipe falls into the first target temperature zone.
Further, the step of adjusting the opening of the first throttle valve according to the temperature of the first target temperature zone and the temperature of the second coil comprises:
when the temperature of the second coil pipe is lower than the minimum temperature value in the first target temperature zone, the opening degree of the first throttle valve is increased;
and when the temperature of the second coil pipe is higher than the maximum temperature value in the first target temperature zone, reducing the opening degree of the first throttle valve.
Further, the step of increasing the opening degree of the first throttle valve when the second coil temperature is less than the minimum temperature value in the first target temperature zone includes:
when the temperature of the second coil pipe is smaller than the minimum temperature value in a first target temperature zone, obtaining a difference value between the temperature of the second coil pipe and the minimum temperature value, and determining an adjusting period and an opening degree to be adjusted of a first throttle valve according to the difference value, wherein the smaller the difference value is, the larger the adjusting period is, the smaller the opening degree to be adjusted is;
when a current regulation period starts, acquiring historical opening of the first throttle valve in the previous regulation period, and taking the sum of the historical opening and the opening to be regulated as the opening of the first throttle valve in the current regulation period;
and after the current regulation period is finished, returning to execute the step of obtaining the difference value between the temperature of the second coil pipe and the minimum temperature value when the temperature of the second coil pipe is smaller than the minimum temperature value in the first target temperature area, and determining the regulation period of the first throttle valve and the opening degree to be regulated according to the difference value.
In order to achieve the above object, the present invention further provides a control method of an air conditioner, including:
when the air conditioner is in a heating mode, adjusting the opening of the first throttle valve to enable the first air outlet temperature of the first air outlet to be higher than the second air outlet temperature of the second air outlet;
controlling the first air guide to rotate by a first preset angle from a closed position, and controlling the second air guide to rotate by a second preset angle from the closed position, wherein the first preset angle is larger than the second preset angle;
acquiring the current outdoor temperature and the outdoor coil temperature of the outdoor heat exchanger;
acquiring a second target temperature area according to the current outdoor temperature;
and adjusting the opening degree of the second throttle valve according to the temperature of the second target temperature zone and the outdoor coil pipe so as to enable the temperature of the outdoor coil pipe to fall into the second target temperature zone.
Further, the step of adjusting the opening of the second throttle valve according to the temperature of the second target temperature zone and the temperature of the outdoor coil comprises:
when the temperature of the outdoor coil pipe is lower than the minimum temperature value in a second target temperature zone, the opening degree of the second throttle valve is increased;
and when the temperature of the outdoor coil pipe is greater than the maximum temperature value in the second target temperature zone, reducing the opening degree of the second throttle valve.
Further, when the outdoor coil temperature is less than the minimum temperature value in the second target temperature zone, the step of increasing the opening degree of the second throttle valve further comprises:
when the temperature of the outdoor coil pipe is smaller than the minimum temperature value in a second target temperature zone, obtaining a difference value between the temperature of the outdoor coil pipe and the minimum temperature value, and determining an adjusting period and an opening to be adjusted of a second throttle valve according to the difference value, wherein the smaller the difference value is, the larger the adjusting period is, the smaller the opening to be adjusted is;
when the current regulation period starts, acquiring the historical opening of the second throttle valve in the previous regulation period, and taking the sum of the historical opening and the opening to be regulated as the opening of the second throttle valve in the current regulation period;
and after the current regulation period is finished, returning to execute the step of obtaining the difference value between the outdoor coil temperature and the minimum temperature value when the outdoor coil temperature is less than the minimum temperature value in the second target temperature region, and determining the regulation period of the second throttle valve and the opening degree to be regulated according to the difference value.
Further, the control method further includes:
when the air conditioner runs in a heating mode, the switching valve is controlled to be opened;
and when the air conditioner runs in a refrigeration mode, controlling the switch valve to be closed, and controlling the first throttle valve and the second throttle valve to be opened to a preset opening degree.
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 as set forth in any one of the above.
To achieve the above object, the present invention also provides a readable storage medium having stored thereon a control program of an air conditioner, the control program of the air conditioner realizing the steps of the control method of the air conditioner as set forth in any one of the above when being executed by a processor.
In the technical scheme of the invention, a first air duct and a second air duct are formed in the shell; the indoor unit is provided with a first air duct, a second air duct and a second heat exchanger, wherein the first air duct is internally provided with the first heat exchanger, the second air duct is provided with the second heat exchanger, the first throttling valve is connected between the first heat exchanger and the second heat exchanger in series, and a refrigerant flowing out of the first heat exchanger and flowing into the second heat exchanger is throttled by the first throttling valve, so that the heat exchange quantity of the second heat exchanger to air flow is smaller than that of the first heat exchange quantity to the air flow, the indoor unit blows out two air flows with different temperatures, the requirements of different body parts of a user on different temperatures are met, and the thermal comfort of the user is improved.
Drawings
Fig. 1 is a schematic structural view of an indoor unit according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of a framework of an embodiment of an air conditioner of the present invention;
FIG. 3 is a schematic cross-sectional view of an indoor unit according to another embodiment of the present invention;
fig. 4 is a schematic structural view of an indoor unit according to another embodiment of the present invention;
fig. 5 is a schematic structural view of an indoor unit according to still another embodiment of the present invention;
FIG. 6 is a schematic diagram of an apparatus in a hardware operating environment according to an embodiment of the present invention;
FIG. 7 is a flowchart illustrating a control method of an air conditioner according to an embodiment of the present invention;
FIG. 8 is a flowchart illustrating a control method of an air conditioner according to an embodiment of step 10;
FIG. 9 is a flowchart illustrating a control method 10 for an air conditioner according to another embodiment of the present invention;
FIG. 10 is a flowchart illustrating an embodiment of a step 131 of the control method of the air conditioner according to the present invention;
FIG. 11 is a flow chart illustrating a control method of an air conditioner according to another embodiment of the present invention;
fig. 12 is a flowchart illustrating an embodiment of a control method step 71 of an air conditioner 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
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without inventive step based on the embodiments of the present invention, are within the scope of protection of the present invention.
It should be noted that all the directional indicators (such as up, down, left, right, front, and rear … …) in the embodiment of the present invention are only used to explain the relative position relationship between the components, the movement situation, etc. in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indicator is changed accordingly.
In addition, the descriptions related to "first", "second", etc. in the present invention are for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.
Referring to fig. 1-2, an indoor unit 10 according to the present invention includes: a housing 110, in which a first air duct 111 and a second air duct 112 are formed in the housing 110; a first heat exchanger 120, wherein the first heat exchanger 120 is disposed in the first air duct 111; a second heat exchanger 130, said second heat exchanger 130 being disposed within said second air duct 112; a first throttle valve 140 (see fig. 2), the first throttle valve 140 being connected in series between the first heat exchanger 120 and the second heat exchanger 130.
In this embodiment, the first air duct 111 and the second air duct 112 in the housing 110 may be completely blocked to form two independent air ducts, the first air duct 111 and the second air duct 112 may also be two air ducts communicated with each other, the first air duct 111 is formed with a first air inlet 1111 and a first air outlet 1112 on the housing 110, the second air duct 112 is formed with a second air inlet 1121 and a second air outlet 1122 on the housing 110, and the first air inlet 1111 and the second air inlet 1121 may be disposed at intervals without being communicated or may be communicated; the first air outlet 1112 and the second air outlet 1122 are not communicated at intervals, the indoor unit 10 further includes a first air guide 121 and a second air guide 131, the first air guide 121 is rotatably disposed on the casing 110 and is configured to adjust an air outlet direction of the first air outlet 1112, the second air guide 131 is rotatably disposed on the casing 110 and is configured to adjust an air outlet direction of the second air outlet 1122, the first heat exchanger 120 is disposed in the first air duct 111 to exchange heat with air flow in the first air duct 111, and the second heat exchanger 130 is disposed in the second air duct 112 to exchange heat with air flow in the second air duct 112. Further, the indoor unit 10 further includes: a first fan 122, wherein the first fan 122 is disposed in the first air duct 111, and the first heat exchanger 120 is located between the first air inlet 1111 and the first fan 122; and a second fan 132, where the second fan 132 is disposed in the second air duct 112, and the second heat exchanger 130 is located between the second air inlet 1121 and the second fan 132.
When the indoor unit 10 is in the heating mode, the first fan 122 is operated to introduce indoor air into the first air duct 111 from the first air inlet 1111, and the indoor air entering from the first air inlet 1111 is subjected to heat exchange by the first heat exchanger 120, then flows through the first fan 122 and flows back to the indoor from the first air outlet 1112, and the first air guide 121 adjusts the air outlet direction of the first air outlet 1112; similarly, the second fan 132 operates to introduce the indoor air into the second air duct 112 from the second air inlet 1121, the indoor air entering from the second air inlet 1121 exchanges heat with the second heat exchanger 130, and then flows through the second fan 132 and flows back to the indoor from the second air outlet 1122, and the second air guide 131 adjusts the air outlet direction of the second air outlet 1122.
The important point of this embodiment is that the first throttle valve 140 is connected in series between the first heat exchanger 120 and the second heat exchanger 130, in the heating mode, the refrigerant sequentially flows through the first heat exchanger 120, the first throttle valve 140 and the second heat exchanger 130, the refrigerant flowing into the second heat exchanger 130 is throttled by the first throttle valve 140, so that the temperature of the refrigerant flowing through the second heat exchanger 130 is lower than that of the refrigerant flowing through the first heat exchanger 120, and thus the temperature of the airflow flowing out from the second air outlet 1122 is lower than that of the airflow flowing out from the first air outlet 1112, and the opening angle of the second air guide 131 is further adjusted to be smaller than that of the first air guide 121, so that the lower temperature airflow blown out from the second air outlet 1122 is higher than the higher temperature airflow blown out from the first air outlet 1112, and thus the lower temperature airflow blown out from the second air outlet 1122 is blown towards the upper half of the human body, the higher temperature airflow blown out from the first air outlet 1112 is blown to the feet of the human body, the temperature of the blown airflow is at least gradually reduced from the bottom, and the temperature level is distinct, so that different temperature requirements of different body parts of a user are met, and the comfort of the user is improved. It can be understood that the refrigerant may also flow through the second heat exchanger 130 first and then flow through the first heat exchanger 120, and the situation of the cooling mode can also be reasonably inferred through the above-mentioned heating mode.
In summary, in the present embodiment, the first air duct 111 and the second air duct 112 are formed in the housing 110; the first heat exchanger 120 is arranged in the first air duct 111, the second heat exchanger 130 is arranged in the second air duct 112, the first throttle valve 140 is connected in series between the first heat exchanger 120 and the second heat exchanger 130, and the refrigerant flowing out of the first heat exchanger 120 and flowing into the second heat exchanger 130 is throttled by the first throttle valve 140, so that the heat exchange capacity of the second heat exchanger 130 to the air flow is smaller than that of the first heat exchange capacity to the air flow, and thus the indoor unit 10 blows out two air flows with different temperatures, the requirements of different body parts of a user on different temperatures are met, and the thermal comfort of the user is improved.
Referring to fig. 1, further, a first air outlet section is formed between the first heat exchanger 120 and the first air outlet 1112; a second air outlet section is formed between the second heat exchanger 130 and the second air outlet 1122, and at least the first air outlet section and the second air outlet section are separated from each other in the first air duct 111 and the second air duct 112.
In this embodiment, since the airflow between the first heat exchanger 120 and the first air outlet 1112 is the airflow after heat exchange by the first heat exchanger 120, the airflow between the second heat exchanger 130 and the second air outlet 1122 is airflow after heat exchange by the second heat exchanger 130, since the first heat exchanger 120 and the second heat exchanger 130 exchange heat with different amounts of air flow, in order to avoid mixing of the two air flows after heat exchange, the air duct portion between the first heat exchanger 120 and the first air outlet 1112 is defined as a first air outlet section, the air duct portion between the second heat exchanger 130 and the second air outlet 1122 is defined as a second air outlet section, and the first air outlet section and the second air outlet section are separated from each other, thereby block two air currents after the heat transfer for the air current that blows off from first air outlet 1112 and second air outlet 1122 has obvious difference in temperature, thereby satisfies the temperature demand of the different health positions of user. It is understood that the first air duct 111 and the second air duct 112 may be completely isolated, so as to isolate the two air flows of different air ducts before and after heat exchange.
Referring to fig. 1, further, the housing 110 includes a panel 113, a face frame 114, and a bottom chassis 115, the panel 113 is disposed on the face frame 114, the bottom chassis 115 is disposed on a side of the face frame 114 away from the panel 113, the second heat exchanger 130 is located between the panel 113 and the first heat exchanger 120, and the first heat exchanger 120 is located between the second heat exchanger 130 and the bottom chassis 115.
In this embodiment, the second heat exchanger 130 is located between the panel 113 and the first heat exchanger 120, and the first heat exchanger 120 is located between the second heat exchanger 130 and the chassis 115, that is, the panel 113, the second heat exchanger 130, the first heat exchanger 120 and the chassis 115 are sequentially disposed, after the chassis 115 is mounted in an external fixture, the first heat exchanger 120 and the second heat exchanger 130 are sequentially away from the chassis 115, the first air inlet 1111 is located above the first heat exchanger 120, the first air outlet 1112 is located below the first heat exchanger 120, the second air inlet 1121 is located above the second heat exchanger 130, the second air outlet 1122 is located below the second heat exchanger 130, and the first air outlet 1112 is closer to the chassis 115 than the second air outlet 1122, so that, when air is blown out, the first air outlet 1112 blows out to a lower area such as a user's foot, the second air outlet 1122 blows air to a higher region like the upper body of a user, and the air flow blown out from the first air outlet 1112 and the air flow blown out from the second air outlet 1122 are less intersected, so that the temperatures of the air flows blown to different parts of the user are obviously raised, and the comfort of the user is improved.
Referring to fig. 1, further, the housing 110 further includes: a first volute 116, the first volute 116 being disposed on the chassis 115; the first volute tongue 117 is arranged in the face frame 114, and the first air outlet section is formed between the first volute 116 and the first volute tongue 117; a second volute 118, wherein the second volute 118 is disposed in the face frame 114 and is located on a side of the first volute tongue 117 away from the first volute 116; the second volute tongue 119 is disposed in the face frame 114 and located between the second volute 118 and the panel 113, and the second outlet section is formed between the second volute 118 and the second volute tongue 119.
In this embodiment, the first volute 116 is disposed on the chassis 115, the first volute tongue 117 is formed in the face frame 114, the first air outlet section is formed by the first volute 116 and the first volute tongue 117, the second volute 118 and the second volute tongue 119 are disposed in the face frame 114, and the second air outlet section is formed by the second volute 118 and the second volute tongue 119, so that the first air outlet section and the second air outlet section are separated from each other, and the air flow in the first air outlet section and the air flow in the second air outlet section are prevented from mixing.
Referring to fig. 3, when rapid heating or cooling is required, the first wind guide member 121 and the second wind guide member 131 both guide wind downward to achieve rapid cooling or heating; referring to fig. 4, when different portions of the user require different wind temperatures, the first wind guide member 121 guides wind downward to meet the high temperature requirement of the lower half of the user, such as the feet, and the second wind guide member 131 guides wind obliquely downward or horizontally to meet the lower temperature requirement of the upper half of the user, such as the face; referring to fig. 5, in the direct blowing prevention mode, the first wind guide 121 and the second wind guide 131 both guide wind horizontally, so as to achieve a user blowing hot wind directly.
Referring to fig. 2, in order to achieve the above object, the present invention further provides an air conditioner 100, including the indoor unit 10 as described above, wherein the air conditioner 100 further includes an outdoor unit 20, and the outdoor unit 20 is communicated with both the first heat exchanger 120 and the second heat exchanger 130. Specifically, the outdoor unit 20 includes a four-way valve 21, a compressor 22 and an outdoor heat exchanger 23, a D-end of the four-way valve 21 is communicated with an outlet of the compressor 22, a C-end of the four-way valve 21 is communicated with a first end of the outdoor heat exchanger 23, an E-end of the four-way valve 21 is communicated with a second end of the outdoor heat exchanger 23 through the first heat exchanger 120, the first throttle valve 140 and the second heat exchanger 130 in sequence, and an S-end of the four-way valve 21 is communicated with an inlet of a liquid storage tank 221 of the compressor 22.
In this embodiment, when the air conditioner 100 is in the heating mode, the refrigerant of the compressor 22 sequentially flows through the D end of the four-way valve 21, the E end of the four-way valve 21, the first heat exchanger 120, the first throttle valve 140, the second heat exchanger 130, and the outdoor heat exchanger 23, and flows back to the liquid storage tank 221 of the compressor 22 through the C end of the four-way valve 21 and the S end of the four-way valve 21, so as to form a heating loop and complete a heating cycle; when the air conditioner 100 is in the cooling mode, the refrigerant of the compressor 22 sequentially flows through the D-end of the four-way valve 21, the C-end of the four-way valve 21, the outdoor heat exchanger 23, the second heat exchanger 130, the first throttle valve 140, and the first heat exchanger 120, and flows back to the liquid storage tank 221 of the compressor 22 through the E-end of the four-way valve 21 and the S-end of the four-way valve 21, thereby forming a cooling loop and completing a cooling cycle.
Further, the outdoor unit 20 further includes: the second heat exchanger 130 is communicated with an inlet of the liquid storage tank 221 of the compressor 22 through the gas-liquid separator 24, and the second heat exchanger 130 is communicated with a second end of the outdoor heat exchanger 23 through the gas-liquid separator 24.
In this embodiment, by providing the gas-liquid separator 24, the second heat exchanger 130 is communicated with the inlet of the liquid storage tank 221 of the compressor 22 through the gas-liquid separator 24, and the second heat exchanger 130 is communicated with the second end of the outdoor heat exchanger 23 through the gas-liquid separator 24, in the heating mode, after the refrigerant flowing out of the second heat exchanger 130 is subjected to gas-liquid separation through the gas-liquid separator 24, part of the liquid refrigerant directly returns to the liquid storage tank 221, and the rest of the refrigerant flows back to the liquid storage tank 221 through the outdoor heat exchanger 23, so as to prevent the outdoor heat exchanger 23 from frosting too fast.
Further, the outdoor unit 20 further includes: and the switch valve 25 is used for communicating the gas-liquid separator 24 with an inlet of the liquid storage tank 221 of the compressor 22 through the switch valve 25.
In this embodiment, by providing the switch valve 25 between the liquid storage tank 221 and the gas-liquid separator 24, the gas-liquid separator 24 is communicated with the inlet of the liquid storage tank 221 of the compressor 22 through the switch valve 25, and in the heating mode, the switch valve 25 is opened to allow a part of the liquid refrigerant to flow back to the liquid storage tank 221; in the cooling mode, the on-off valve 25 is closed to prevent a portion of the liquid refrigerant from flowing back to the receiver 221, so as to increase the amount of the liquid refrigerant entering the second heat exchanger 130 and improve the heat exchange efficiency.
Further, the outdoor unit 20 further includes: a second throttle valve 26, through which the gas-liquid separator 24 communicates with a second end of the outdoor heat exchanger 23.
In the present embodiment, the second throttle valve 26 is disposed between the outdoor heat exchanger 23 and the gas-liquid separator 24, the gas-liquid separator 24 is communicated with the second end of the outdoor heat exchanger 23 through the second throttle valve 26, in the heating mode, the opening degree of the second throttle valve 26 is appropriately reduced, so that the outdoor heat exchanger 23 is prevented from being frosted too fast, in the cooling mode, the first throttle valve 140 and the second throttle valve 26 can both be maintained in a fully open state, and the first throttle valve 140 and the second throttle valve 26 can be electronic expansion valves.
Referring to fig. 6, fig. 6 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 is an air conditioner or a server and a server cluster connected with the air conditioner. As shown in fig. 6, 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. Wherein a communication bus 1002 is used to enable connective communication between these components. The user interface 1003 may include a Display (Display), an input unit such as a Keyboard (Keyboard), a remote controller, 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., a non-volatile memory such as a disk memory), the memory 1005 may optionally also 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. 6, a memory 1005, which is a kind of computer storage medium, may include therein an operating system, a network communication module, a user interface module, and a control program of an air conditioner.
In the terminal shown in fig. 6, the network interface 1004 is mainly used for connecting to a backend server and performing data communication with the backend server; the user interface 1003 is mainly used for connecting a client (user side) and performing data communication with the client; and the processor 1001 may be configured to call a control program of the air conditioner stored in the memory 1005 and perform the following operations:
when the air conditioner is in a heating mode, adjusting the opening of the first throttle valve to enable the first air outlet temperature of the first air outlet to be higher than the second air outlet temperature of the second air outlet;
and controlling the first air guide piece to rotate by a first preset angle from a closed position, and controlling the second air guide piece to rotate by a second preset angle from the closed position, wherein the first preset angle is larger than the second preset angle.
Referring to fig. 7, a method for controlling an air conditioner according to the present invention is provided based on the air conditioner, and in embodiment 1, the method for controlling an air conditioner includes the following steps:
step S10, when the air conditioner is in a heating mode, adjusting the opening of the first throttle valve to make the first outlet air temperature of the first air outlet higher than the second outlet air temperature of the second air outlet;
step S20, controlling the first air guide to rotate by a first preset angle from the closed position, and controlling the second air guide to rotate by a second preset angle from the closed position, where the first preset angle is greater than the second preset angle.
In this embodiment, when the air conditioner is in the heating mode, the refrigerant sequentially flows through the first heat exchanger, the first throttle valve, and the second heat exchanger, the refrigerant flowing into the second heat exchanger is throttled by the opening of the first throttle valve, so that the temperature of the refrigerant flowing through the second heat exchanger is lower than the temperature of the refrigerant flowing through the first heat exchanger, and thus the temperature of the air flow flowing out of the second air outlet is lower than the temperature of the air flow flowing out of the first air outlet, the first air guide is controlled to rotate from the closed position by a first preset angle, and the second air guide is controlled to rotate from the closed position by a second preset angle, where the first preset angle is larger than the second preset angle, that is, the opening angle of the second air guide is smaller than the opening angle of the first air guide, so that the lower-temperature air flow blown out of the second air outlet is higher than the higher-temperature air flow blown out of the first air outlet, therefore, the lower temperature airflow blown out by the second air outlet blows towards the upper half part of a human body, such as the face, the higher temperature airflow blown out by the first air outlet blows towards the lower half part of the human body, such as the feet, the temperature of the blown airflow is at least gradually reduced from the bottom, the temperature level is clear, different temperature requirements of different body parts of a user are met, and the comfort of the user is improved. Immediately, in order to achieve the throttling effect, the opening and closing of the first throttle valve may be smaller than the maximum opening degree at the time of throttling.
Referring to fig. 8, further, according to the 1 st embodiment of the control method, in the 2 nd embodiment, the step of adjusting the opening degree of the first throttle valve includes:
step S30, acquiring a temperature difference between a first coil temperature of the first heat exchanger and a second coil temperature of the second heat exchanger;
step S35, acquiring a target temperature difference between a first coil temperature of the first heat exchanger and a second coil temperature of the second heat exchanger;
and step S40, adjusting the opening of the first throttle valve according to the temperature difference and the target temperature difference.
Specifically, the step of adjusting the opening degree of the first throttle valve according to the temperature difference and the target temperature difference includes:
step S41, increasing the opening degree of the first throttle valve when the temperature difference is greater than the target temperature difference;
and step S42, reducing the opening degree of the first throttle valve when the temperature difference is smaller than the target temperature difference.
In this embodiment, before the opening degree of the first throttle valve is adjusted, a temperature difference between a first coil temperature of the first heat exchanger and a second coil temperature of the second heat exchanger is preset to be obtained, and a target temperature difference between the first coil temperature and the second coil temperature is obtained, where the target temperature difference may be set according to an actual situation, for example, the target temperature difference may be 6 degrees, and when the temperature difference is greater than the target temperature difference, it indicates that a difference between the first coil temperature and the second coil temperature is too large, which may cause an airflow temperature blown out from the first air outlet and an airflow temperature difference blown out from the second air outlet to be too large, resulting in a user's discomfort, so that the opening degree of the first throttle valve is increased, a throttling effect of the first throttle valve is decreased, the second coil temperature is increased, and a temperature difference between the first coil temperature and the second coil temperature is close to the target temperature, the comfort of the user is improved; on the contrary, the temperature difference is less than when the target difference in temperature, show first coil pipe temperature with the second coil pipe temperature difference undersize can lead to the air current temperature that first air outlet blew out and the air current temperature difference undersize that the second air outlet blew out, leads to that the different positions of user can't experience obvious wind temperature difference to lead to the user comfortable inadequately, consequently, reduce the aperture of first choke valve increases the throttling effect of first choke valve reduces the second coil pipe temperature, thereby makes first coil pipe temperature with the temperature difference of second coil pipe temperature is close to target temperature improves user's travelling comfort. It is understood that the opening degree of the first throttle valve is kept constant when the temperature difference is equal to the target temperature difference.
Referring to fig. 9, further, based on the 1 st embodiment of the control method, in the 3 rd embodiment, the step of obtaining the target temperature difference between the first coil temperature of the first heat exchanger and the second coil temperature of the second heat exchanger includes:
step S31, acquiring the current indoor temperature and the outdoor coil temperature of the outdoor unit;
step S32, respectively acquiring a first reference value, a second reference value and a third reference value corresponding to the first coil temperature, the current indoor temperature and the outdoor coil temperature;
step S33, obtaining the target temperature difference according to the first reference value, the second reference value, and the third reference value.
In this embodiment, the target temperature difference represents a difference between supercooling degrees of refrigerants circulating in the first heat exchanger and the second heat exchanger, and the supercooling degrees of the refrigerants circulating in the first heat exchanger and the second heat exchanger are affected by a first coil temperature, a current indoor temperature and an outdoor coil temperature, where the higher the first coil temperature is, the higher the supercooling degree is to be set, and the higher the target temperature is; the higher the current indoor temperature is, the higher the supercooling degree needs to be set, and the larger the target temperature is; the higher the outdoor coil temperature, the higher the supercooling degree is to be set, and the greater the target temperature, and therefore, respectively obtaining a corresponding first reference value, a second reference value and a third reference value according to the first coil temperature, the current indoor temperature and the outdoor coil temperature, and obtaining the target temperature difference according to the first reference value, the second reference value and the third reference value, specifically, taking the combination of the first reference value, the second reference value and the third reference value as the target temperature, so as to obtain a more accurate target temperature, since the target temperature is the magnitude of the first coil temperature, the current indoor temperature and the outdoor coil temperature, therefore, when the opening degree of the first throttle valve is adjusted according to the target temperature, a user can feel more comfortable, and the overall operation efficiency of the air conditioning system can be improved.
Referring to fig. 10, further, according to the 1 st embodiment of the control method, in the 4 th embodiment, the step of adjusting the opening of the first throttle valve includes:
step S11, acquiring the current indoor temperature;
step S12, acquiring a first target temperature zone according to the current indoor temperature;
and step S13, adjusting the opening of the first throttle valve according to the first target temperature zone and the temperature of the second coil pipe so as to enable the temperature of the second coil pipe to fall into the first target temperature zone.
Specifically, the step of adjusting the opening of the first throttle valve according to the temperature of the first target temperature zone and the temperature of the second coil comprises:
step S131, when the temperature of the second coil pipe is smaller than the minimum temperature value in a first target temperature zone, the opening degree of the first throttle valve is increased;
and S132, when the temperature of the second coil pipe is greater than the maximum temperature value in the first target temperature zone, reducing the opening degree of the first throttle valve.
In this embodiment, the first target temperature zone, that is, the temperature zone into which the second coil temperature falls, is obtained according to the current indoor temperature by obtaining the current indoor temperature, and specifically, since the second air outlet is to blow an air flow with a reduced temperature, the first target temperature zone is set to a temperature zone lower than the current indoor temperature, for example, to ensure that the second coil temperature T22 is less than the current indoor temperature T1 by X degrees and can fluctuate within a range of Y degrees, (T1-X) -Y ≦ T22 ≦ T1-X) + Y, for example, X is 6 and Y is 1, and when the current indoor temperature is 30 degrees, to ensure that the second coil temperature T22 is less than the current indoor temperature 30 degrees by 6 degrees and can fluctuate within a range of 1 degree, the first target temperature zone corresponding to the second coil temperature T22 is 23-25 degrees, therefore, the temperature of the airflow blown out from the second air outlet is lower than the indoor temperature, and a user feels comfortable.
Specifically, by way of example, when the second coil temperature is lower than the minimum temperature value in the first target temperature zone, for example, 23 degrees, it indicates that the second coil temperature is too low, the opening of the first throttle valve is increased to increase the second coil temperature, so as to increase the airflow temperature of the second air outlet, and conversely, when the second coil temperature is higher than the maximum temperature value in the first target temperature zone, for example, 25 degrees, it indicates that the second coil temperature is too high, and the difference between the air outlet temperature of the second air outlet and the air outlet temperature of the first air outlet is not large, so that the opening of the first throttle valve needs to be decreased to decrease the second coil temperature, so as to decrease the airflow temperature of the second air outlet. The second coil temperature falls within the first target temperature range by repeatedly performing step S131 and step S132.
Referring to fig. 11, further, based on the 4 th embodiment of the above control method, in the 5 th embodiment, the step of increasing the opening of the first throttle valve when the second coil temperature is less than the minimum temperature value in the first target temperature zone includes:
step S1311, when the second coil temperature is smaller than a minimum temperature value in a first target temperature zone, obtaining a difference value between the second coil temperature and the minimum temperature value, and determining an adjusting period and an opening degree to be adjusted of a first throttle valve according to the difference value, wherein the smaller the difference value is, the larger the adjusting period is, the smaller the opening degree to be adjusted is;
step S1312, when the current regulation period starts, acquiring the historical opening of the first throttle valve in the previous regulation period, and taking the sum of the historical opening and the opening to be regulated as the opening of the first throttle valve in the current regulation period;
and S132, after the current adjusting period is finished, when the temperature of the second coil pipe is smaller than the minimum temperature value in the first target temperature zone, the difference value between the temperature of the second coil pipe and the minimum temperature value is obtained, and the adjusting period of the first throttle valve and the opening degree to be adjusted are determined according to the difference value.
In this embodiment, the adjustment of the opening degree of the first throttle valve is periodic, for example, an adjustment period is 30 seconds to 60 seconds, so when the second coil temperature is less than the minimum temperature value in the first target temperature zone, a difference value between the second coil temperature and the minimum temperature value is obtained, and an adjustment period and an opening degree to be adjusted of the first throttle valve are determined according to the difference value, where the smaller the difference value is, the larger the adjustment period is, the smaller the opening degree to be adjusted is, for example, when the difference value is 3, the adjustment period is 30 seconds, the opening degree to be adjusted is 4, when the difference value is 2, the adjustment period is 45 seconds, and the opening degree to be adjusted is 3; at the beginning of the current regulation period (45 seconds), acquiring the historical opening (such as 200) of the first throttle valve in the previous regulation period (30 seconds), and taking the sum (such as 203) of the historical opening (such as 200) and the opening (such as 3) to be regulated as the opening of the first throttle valve in the current regulation period; and after the current regulation period is finished, returning to execute the step that when the temperature of the second coil pipe is smaller than the minimum temperature value in the first target temperature zone, the difference value between the temperature of the second coil pipe and the minimum temperature value is obtained, and determining the regulation period of the first throttle valve and the opening degree to be regulated according to the difference value until the temperature of the second coil pipe falls into the first target temperature zone again.
Since the air conditioner has hysteresis in adjusting the indoor air, for example, at this moment, the difference between the second coil temperature and the minimum temperature value is 3, the corresponding adjustment period is 30 seconds, and the opening degree to be adjusted is 4, if the air conditioner continues to adjust according to the adjustment period and the opening degree to be adjusted for 10 times, since the air conditioner will perform the final adjustment function on the current indoor temperature after a certain time period at this moment, for example, 5 minutes, and at this moment, the detected difference is still 3, the air conditioner will continue to perform according to the adjustment period and the opening degree to be adjusted, after 5 minutes, the second coil temperature may cross the first target temperature zone, so that the second coil temperature is greater than the maximum value of the first target temperature zone, that is, the first throttle valve is subjected to transient adjustment, and therefore, in this embodiment, by obtaining the difference between the second coil temperature and the minimum temperature value, and determining an adjusting period and an opening degree to be adjusted of the first throttle valve according to the difference, wherein the smaller the difference is, the larger the adjusting period is, the smaller the opening degree to be adjusted is, that is, the closer the temperature of the second coil pipe is to the first target temperature zone, the longer the adjusting period is, and the smaller the adjusting opening degree is, so that the first throttle valve is prevented from being excessively adjusted. It can be understood that, when the temperature of the second coil pipe is greater than the maximum temperature value in the first target temperature region, the adjustment manner may refer to an adjustment manner in which the temperature of the second coil pipe is less than the minimum temperature value in the first target temperature region, which is not described herein again.
Referring to fig. 2 and 11, a 6 th embodiment of the method for controlling an air conditioner according to the present invention is further proposed based on the structure of the air conditioner proposed above, where in the 6 th embodiment, the method for controlling an air conditioner includes:
step S10, when the air conditioner is in a heating mode, adjusting the opening of the first throttle valve to make the first outlet air temperature of the first air outlet higher than the second outlet air temperature of the second air outlet;
step S20, controlling the first air guide to rotate by a first preset angle from a closed position, and controlling the second air guide to rotate by a second preset angle from the closed position, wherein the first preset angle is greater than the second preset angle;
step S50, acquiring the current outdoor temperature and the outdoor coil temperature of the outdoor heat exchanger;
step S60, a second target temperature area is obtained according to the current outdoor temperature;
and step S70, adjusting the opening of the second throttle valve according to the temperature of the second target temperature zone and the outdoor coil pipe so as to enable the temperature of the outdoor coil pipe to fall into the second target temperature zone.
Specifically, the step of adjusting the opening of the second throttle valve according to the temperature of the second target temperature zone and the temperature of the outdoor coil comprises:
step S71, when the temperature of the outdoor coil pipe is smaller than the minimum temperature value in a second target temperature area, the opening degree of the second throttle valve is increased;
and step S72, when the temperature of the outdoor coil pipe is greater than the maximum temperature value in the second target temperature zone, reducing the opening degree of the second throttle valve.
In this embodiment, the second target temperature zone, that is, the temperature interval in which the temperature of the outdoor coil falls, is obtained by obtaining the current outdoor temperature, and obtaining the second target temperature zone according to the current outdoor temperature, to avoid that the outdoor heat exchanger frosts too fast, and to ensure that the temperature T3 of the outdoor coil is a degree less than the current outdoor temperature T4 and can fluctuate within a range of B degrees, (T4-a) -B is equal to or less than T22 and equal to or less than (T1-X) + B, for example, a is 4, B is 1, and when the current outdoor temperature is 6 degrees, it is to ensure that the temperature T3 of the outdoor coil is 6 degrees less than the current outdoor temperature and can fluctuate within a range of 1 degree, that is, the second target temperature zone corresponding to the temperature T3 of the outdoor coil is 1-3 degrees, so as to ensure that the frosting of the outdoor heat exchanger is prevented from being too fast.
Specifically, as illustrated by the above example, when the outdoor coil temperature is lower than the minimum temperature value in the second target temperature zone, for example, 1 degree, it indicates that the outdoor coil temperature is too low, the opening of the second throttle valve is increased to increase the outdoor coil temperature to avoid the outdoor heat exchanger from frosting too fast, and conversely, when the outdoor coil temperature is higher than the maximum temperature value in the second target temperature zone, for example, 3 degrees, it indicates that the outdoor coil temperature is too high, and the evaporation effect is reduced, so the opening of the second throttle valve needs to be decreased to reduce the outdoor coil temperature, thereby increasing the evaporation effect. Repeatedly performing the steps S71 and S72 to make the outdoor coil temperature fall within the second target temperature zone.
Referring to fig. 12, further, based on the 6 th embodiment of the above control method, in the 7 th embodiment, the step of increasing the opening degree of the second throttle valve when the outdoor coil temperature is less than the minimum temperature value in the second target temperature zone further includes:
step S711, when the temperature of the outdoor coil pipe is smaller than the minimum temperature value in a second target temperature zone, obtaining a difference value between the temperature of the outdoor coil pipe and the minimum temperature value, and determining an adjusting period and an opening degree to be adjusted of a second throttle valve according to the difference value, wherein the smaller the difference value is, the larger the adjusting period is, the smaller the opening degree to be adjusted is;
step S712, when the current regulation cycle starts, obtaining the historical opening of the second throttle valve in the previous regulation cycle, and taking the sum of the historical opening and the opening to be regulated as the opening of the second throttle valve in the current regulation cycle;
and S713, after the current adjusting period is finished, when the temperature of the outdoor coil pipe is smaller than the minimum temperature value in the second target temperature area, the difference value between the temperature of the outdoor coil pipe and the minimum temperature value is obtained, and the adjusting period of the second throttle valve and the opening degree to be adjusted are determined according to the difference value.
In this embodiment, the adjustment of the opening degree of the second throttle valve is periodic, for example, an adjustment period is 30 seconds to 60 seconds, so when the outdoor coil temperature is less than the minimum temperature value in the second target temperature zone, a difference value between the outdoor coil temperature and the minimum temperature value is obtained, and an adjustment period and an opening degree to be adjusted of the second throttle valve are determined according to the difference value, where the smaller the difference value is, the larger the adjustment period is, the smaller the opening degree to be adjusted is, for example, when the difference value is 3, the adjustment period is 30 seconds, the opening degree to be adjusted is 4, when the difference value is 2, the adjustment period is 45 seconds, and the opening degree to be adjusted is 3; at the beginning of the current regulation period (45 seconds), acquiring the historical opening (such as 200) of the second throttle valve in the previous regulation period (30 seconds), and taking the sum (such as 203) of the historical opening (such as 200) and the opening (such as 3) to be regulated as the opening of the second throttle valve in the current regulation period; and after the current regulation period is finished, returning to execute the step of obtaining the difference value between the outdoor coil temperature and the minimum temperature value when the outdoor coil temperature is smaller than the minimum temperature value in the second target temperature area, and determining the regulation period of the second throttle valve and the opening degree to be regulated according to the difference value until the outdoor coil temperature falls into the second target temperature area again.
Since the air conditioner has hysteresis in adjusting the indoor air, for example, at this moment, the difference between the outdoor coil temperature and the minimum temperature value is 3, the corresponding adjustment period is 30 seconds, and the opening to be adjusted is 4, if the air conditioner continues to adjust according to the adjustment period and the opening to be adjusted for 10 times, since the air conditioner will perform the final adjustment function on the current indoor temperature after a certain time period at this moment, for example, 5 minutes, and the detected difference is still 3, the air conditioner will continue to perform according to the adjustment period and the opening to be adjusted, after 5 minutes, the outdoor coil temperature may cross the second target temperature zone, so that the outdoor coil temperature is greater than the maximum value of the second target temperature zone, that is, the second throttle valve is excessively adjusted, therefore, in this embodiment, by obtaining the difference between the outdoor coil temperature and the minimum temperature value, and determining an adjusting period and an opening degree to be adjusted of the second throttle valve according to the difference, wherein the smaller the difference is, the larger the adjusting period is, the smaller the opening degree to be adjusted is, that is, the closer the outdoor coil temperature is to the minimum value of the second target temperature zone, the longer the adjusting period is, the smaller the adjusting opening degree is, and thus, the over-adjustment of the second throttle valve is prevented. It can be understood that, when the outdoor coil temperature is greater than the maximum temperature value in the second target temperature region, the adjustment manner may refer to an adjustment manner in which the outdoor coil temperature is less than the minimum temperature value in the second target temperature region, which is not described herein again.
Further, based on the above-described embodiments 6 to 7 of the control method, in the 8 th embodiment, the control method further includes:
step S80, when the air conditioner runs in a heating mode, the switch valve is controlled to be opened;
and step S90, controlling the switch valve to be closed and controlling the first throttle valve and the second throttle valve to be opened to a preset opening degree when the air conditioner runs in a cooling mode.
In the embodiment, in the heating mode, the switch valve is controlled to be opened so as to allow part of liquid refrigerant to flow back to the liquid storage tank, thereby further avoiding the outdoor ventilation from frosting too fast; in a refrigeration mode, the switch valve is controlled to be closed, and partial liquid refrigerant is prevented from flowing back to the liquid storage tank, so that the amount of the liquid refrigerant entering the second heat exchanger is increased, and the heat exchange efficiency is improved; in the heating mode, the opening degrees of the first throttle valve and the second throttle valve are adjusted through the above embodiment, so that air flows with different temperatures are blown out, and the outdoor heat exchanger is prevented from frosting too fast, and in the cooling mode, the first throttle valve and the second throttle valve 26 are controlled to be kept in a full-open state, so that the optimal cooling effect is realized.
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 provides a 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 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 (18)

1. An air conditioner, characterized in that, the air conditioner includes off-premises station and indoor set, indoor set includes:
the air conditioner comprises a shell, a first air duct and a second air duct are formed in the shell, a first air inlet and a first air outlet are formed in the shell of the first air duct, and a second air inlet and a second air outlet are formed in the shell of the second air duct;
the first air guide piece is rotatably arranged on the shell so as to adjust the air outlet direction of the first air outlet;
the second air guide piece is rotatably arranged on the shell so as to adjust the air outlet direction of the second air outlet;
the first heat exchanger is arranged in the first air duct;
the second heat exchanger is arranged in the second air duct;
a first throttling valve in series between the first heat exchanger and the second heat exchanger.
2. The air conditioner as claimed in claim 1, wherein the outdoor unit includes a four-way valve, a compressor, an outdoor heat exchanger, and a gas-liquid separator, wherein a D-port of the four-way valve is communicated with an outlet of the compressor, a C-port of the four-way valve is communicated with a first end of the outdoor heat exchanger, an E-port of the four-way valve is communicated with a second end of the outdoor heat exchanger through the first heat exchanger, the first throttle valve, the second heat exchanger, and the gas-liquid separator in sequence, the gas-liquid separator is further communicated with an inlet of the liquid storage tank of the compressor, and an S-port of the four-way valve is communicated with an inlet of the liquid storage tank of the compressor.
3. The air conditioner of claim 2, wherein the outdoor unit further comprises:
and the gas-liquid separator is communicated with an inlet of a liquid storage tank of the compressor through the switch valve.
4. The air conditioner of claim 2, wherein the outdoor unit further comprises:
a second throttling valve through which the gas-liquid separator communicates with a second end of the outdoor heat exchanger.
5. The air conditioner of claim 3, wherein the outdoor unit further comprises:
a second throttling valve through which the gas-liquid separator communicates with a second end of the outdoor heat exchanger.
6. A control method of an air conditioner, applied to the air conditioner according to any one of claims 1 to 5, comprising:
when the air conditioner is in a heating mode, adjusting the opening of the first throttle valve to enable the first air outlet temperature of the first air outlet to be higher than the second air outlet temperature of the second air outlet;
and controlling the first air guide piece to rotate by a first preset angle from a closed position, and controlling the second air guide piece to rotate by a second preset angle from the closed position, wherein the first preset angle is larger than the second preset angle.
7. The control method of an air conditioner according to claim 6, wherein the adjusting the opening degree of the first throttle valve includes:
acquiring a temperature difference between a first coil temperature of the first heat exchanger and a second coil temperature of the second heat exchanger;
acquiring a target temperature difference between a first coil temperature of the first heat exchanger and a second coil temperature of the second heat exchanger;
and adjusting the opening of the first throttle valve according to the temperature difference and the target temperature difference.
8. The control method of an air conditioner according to claim 7, wherein the step of adjusting the opening degree of the first throttle valve according to the temperature difference and the target temperature difference comprises:
when the temperature difference is larger than the target temperature difference, increasing the opening of the first throttle valve;
when the temperature difference is smaller than the target temperature difference, the opening degree of the first throttle valve is reduced.
9. The method of controlling an air conditioner according to claim 7, wherein said step of obtaining a target temperature difference between a first coil temperature of the first heat exchanger and a second coil temperature of the second heat exchanger includes:
acquiring the current indoor temperature and the outdoor coil temperature of the outdoor unit;
respectively acquiring a corresponding first reference value, a second reference value and a third reference value according to the first coil temperature, the current indoor temperature and the outdoor coil temperature;
and acquiring the target temperature difference according to the first reference value, the second reference value and the third reference value.
10. The control method of an air conditioner according to claim 6, wherein the adjusting the opening degree of the first throttle valve includes:
acquiring the current indoor temperature;
acquiring a first target temperature area according to the current indoor temperature;
and adjusting the opening degree of the first throttle valve according to the first target temperature zone and the temperature of the second coil pipe, so that the temperature of the second coil pipe falls into the first target temperature zone.
11. The control method of an air conditioner according to claim 10, wherein the step of adjusting the opening degree of the first throttle valve according to the first target temperature zone and the second coil temperature comprises:
when the temperature of the second coil pipe is lower than the minimum temperature value in the first target temperature zone, the opening degree of the first throttle valve is increased;
and when the temperature of the second coil pipe is higher than the maximum temperature value in the first target temperature zone, reducing the opening degree of the first throttle valve.
12. The control method of an air conditioner according to claim 11, wherein the step of increasing the opening degree of the first throttle valve when the second coil temperature is less than the minimum temperature value in the first target temperature zone comprises:
when the temperature of the second coil pipe is smaller than the minimum temperature value in a first target temperature zone, obtaining a difference value between the temperature of the second coil pipe and the minimum temperature value, and determining an adjusting period and an opening degree to be adjusted of a first throttle valve according to the difference value, wherein the smaller the difference value is, the larger the adjusting period is, the smaller the opening degree to be adjusted is;
when a current regulation period starts, acquiring historical opening of the first throttle valve in the previous regulation period, and taking the sum of the historical opening and the opening to be regulated as the opening of the first throttle valve in the current regulation period;
and after the current regulation period is finished, returning to execute the step of obtaining the difference value between the temperature of the second coil pipe and the minimum temperature value when the temperature of the second coil pipe is smaller than the minimum temperature value in the first target temperature area, and determining the regulation period of the first throttle valve and the opening degree to be regulated according to the difference value.
13. A control method of an air conditioner, applied to the air conditioner of claim 5, comprising:
when the air conditioner is in a heating mode, adjusting the opening of the first throttle valve to enable the first air outlet temperature of the first air outlet to be higher than the second air outlet temperature of the second air outlet;
controlling the first air guide piece to rotate by a first preset angle from a closed position, and controlling the second air guide piece to rotate by a second preset angle from the closed position, wherein the first preset angle is larger than the second preset angle;
acquiring the current outdoor temperature and the outdoor coil temperature of the outdoor heat exchanger;
acquiring a second target temperature area according to the current outdoor temperature;
and adjusting the opening degree of the second throttle valve according to the temperature of the second target temperature zone and the outdoor coil pipe so as to enable the temperature of the outdoor coil pipe to fall into the second target temperature zone.
14. The control method of an air conditioner according to claim 13, wherein the adjusting the opening degree of the second throttle valve according to the second target temperature zone and the outdoor coil temperature comprises:
when the temperature of the outdoor coil pipe is lower than the minimum temperature value in a second target temperature zone, the opening degree of the second throttle valve is increased;
and when the temperature of the outdoor coil pipe is greater than the maximum temperature value in the second target temperature zone, reducing the opening degree of the second throttle valve.
15. The control method of an air conditioner according to claim 14, wherein the step of increasing the opening degree of the second throttle valve when the outdoor coil temperature is less than the minimum temperature value in the second target temperature zone further comprises:
when the temperature of the outdoor coil is lower than the minimum temperature value in a second target temperature zone, obtaining a difference value between the temperature of the outdoor coil and the minimum temperature value, and determining an adjusting period and an opening degree to be adjusted of a second throttle valve according to the difference value, wherein the smaller the difference value is, the larger the adjusting period is, the smaller the opening degree to be adjusted is;
when the current regulation period starts, acquiring the historical opening of the second throttle valve in the previous regulation period, and taking the sum of the historical opening and the opening to be regulated as the opening of the second throttle valve in the current regulation period;
and after the current regulation period is finished, returning to execute the step of obtaining the difference value between the outdoor coil temperature and the minimum temperature value when the outdoor coil temperature is smaller than the minimum temperature value in the second target temperature zone, and determining the regulation period of the second throttle valve and the opening to be regulated according to the difference value.
16. The control method of an air conditioner according to any one of claims 13 to 15, further comprising:
when the air conditioner runs in a heating mode, the switching valve is controlled to be opened;
and when the air conditioner runs in a refrigeration mode, controlling the switch valve to be closed, and controlling the first throttle valve and the second throttle valve to be opened to a preset opening degree.
17. 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 operable on the processor, the control program of the air conditioner, when executed by the processor, implementing the steps of the control method of the air conditioner according to any one of claims 6-16.
18. A readable storage medium having stored thereon a control program of an air conditioner, the control program of the air conditioner realizing the steps of the control method of the air conditioner according to any one of claims 6 to 16 when being executed by a processor.
CN202011644706.3A 2020-12-31 2020-12-31 Air conditioner, control method thereof and readable storage medium Pending CN114688694A (en)

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Application Number Priority Date Filing Date Title
CN202011644706.3A CN114688694A (en) 2020-12-31 2020-12-31 Air conditioner, control method thereof and readable storage medium

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202011644706.3A CN114688694A (en) 2020-12-31 2020-12-31 Air conditioner, control method thereof and readable storage medium

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Publication Number Publication Date
CN114688694A true CN114688694A (en) 2022-07-01

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Country Link
CN (1) CN114688694A (en)

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