CN109595691B - Control method of double-through-flow air conditioner - Google Patents

Control method of double-through-flow air conditioner Download PDF

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Publication number
CN109595691B
CN109595691B CN201811560777.8A CN201811560777A CN109595691B CN 109595691 B CN109595691 B CN 109595691B CN 201811560777 A CN201811560777 A CN 201811560777A CN 109595691 B CN109595691 B CN 109595691B
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air
rotating speed
crossflow blower
air conditioner
controlling
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CN109595691A (en
Inventor
张静
黄煜鹏
刘慧�
宁强延
罗永前
杨永祥
谢承琪
李振华
汤梓颖
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Gree Electric Appliances Inc of Zhuhai
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Gree Electric Appliances Inc of Zhuhai
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Priority to PCT/CN2019/110775 priority patent/WO2020125165A1/en
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
    • F24F1/0007—Indoor units, e.g. fan coil units
    • F24F1/0018—Indoor units, e.g. fan coil units characterised by fans
    • F24F1/0025—Cross-flow or tangential fans
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
    • F24F11/63—Electronic processing
    • F24F11/65—Electronic processing for selecting an operating mode
    • F24F11/67—Switching between heating and cooling modes
    • 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
    • F24F11/77—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 by controlling the speed of ventilators
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
    • Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating

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

Abstract

The invention provides a control method of a double-through-flow air conditioner, which comprises the following steps: a detection step for detecting whether the air conditioner is in an on state; a control step of controlling the first crossflow blower and the second crossflow blower to simultaneously operate and controlling the rotating speed N of the first crossflow blower after the air conditioner is started1Is less than or equal to N1minWhile controlling the rotation speed N of the second crossflow blower2Is N2maxIn which N is1minIs a preset minimum rotation speed, N, of the first through flow fan2maxThe preset maximum rotational speed of the second crossflow blower. According to the invention, a user can feel strong cold feeling or hot feeling through the wind with larger wind volume blown out from the lower air outlet at the cooling/heating starting or initial stage, and the body feeling comfort level of the user at the initial operation stage is improved.

Description

Control method of double-through-flow air conditioner
Technical Field
The invention belongs to the technical field of air conditioners, and particularly relates to a control method of a double-through-flow air conditioner.
Background
The traditional wall-mounted heat pump air conditioner has a single air supply mode, and is difficult to meet the air supply comfort requirements of users at different stages of air conditioner operation, and cold air or hot air can not be sensed by human bodies frequently in the cooling/heating starting stage of an indoor unit, so that the problem of uncomfortable feeling of the users at the initial cooling/heating stage is solved; the traditional air conditioner indoor unit has long temperature rise time during refrigeration/heating and cannot reach indoor specified temperature quickly, and people feel worse due to the fact that the indoor unit blows towards a human body during refrigeration; when the indoor unit heats, hot air tends to move upwards, so that the hot air on the upper part of a room cannot fall to the ground, energy waste is caused, and the comfort level of a human body is reduced; the indoor unit has insufficient air quantity, low heat and no room load meeting the requirement of the user.
The problem of long temperature rise time exists when the indoor unit is used for refrigerating/heating; the problem of poor body feeling caused by direct blowing of people when the indoor unit is used for refrigerating; when the indoor unit heats, hot air on the upper part of a room cannot fall to the ground, so that energy is wasted; the indoor unit has insufficient air quantity, low heat and no room load meeting the requirements of users.
Because the air conditioner indoor unit in the prior art often causes that a human body can not feel cold air or hot air in the refrigeration/heating starting-up stage, a user feels uncomfortable in the initial refrigeration/heating stage; the invention discloses a control method of a double-through-flow air conditioner, which solves the technical problems that the temperature rise time is long during refrigeration/heating, people feel worse due to the fact that the indoor unit blows towards a human body during refrigeration, hot air cannot fall to the ground during heating of the indoor unit, energy waste is caused, the comfort level of the human body is reduced, the air quantity of the indoor unit is insufficient, refrigeration is conducted, the heat is low, the load of a room cannot meet the requirements of users, and the like.
Disclosure of Invention
Therefore, the technical problem to be solved by the present invention is to overcome the defects of poor cold feeling or hot feeling and uncomfortable feeling of a user at the initial stage of cooling/heating of an indoor unit of an air conditioner in the prior art, so as to provide a control method for a dual-cross flow air conditioner.
The invention provides a control method of a double-through-flow air conditioner, which comprises the following steps:
the double cross-flow air conditioner comprises a first cross-flow fan, a second cross-flow fan, a first air outlet and a second air outlet, wherein the first air outlet is arranged corresponding to the first cross-flow fan, the second air outlet is arranged corresponding to the second cross-flow fan, and the first air outlet is arranged above the second air outlet;
a detection step for detecting whether the air conditioner is in an on state;
a control step of controlling the first crossflow blower and the second crossflow blower to simultaneously operate and controlling the rotating speed N of the first crossflow blower after the air conditioner is started1Is less than or equal to N1minWhile controlling the rotation speed N of the second crossflow blower2Is N2maxIn which N is1minIs a preset minimum rotation speed, N, of the first through flow fan2maxThe preset maximum rotational speed of the second crossflow blower.
Preferably, the first and second electrodes are formed of a metal,
a detection step for detecting the operation time of the air conditioner;
a control step for controlling the first crossflow blower and the second crossflow blower to operate simultaneously and controlling the rotating speed N of the first crossflow blower after the air conditioner is started for a preset time1Is N1maxAnd controlling the rotational speed N of the second crossflow blower2Is N2maxIn which N is1maxIs a preset maximum rotation speed, N, of the first through flow fan2maxThe preset maximum rotational speed of the second crossflow blower.
Preferably, the first and second electrodes are formed of a metal,
also comprises a judging step for judging the indoor environment temperature T and the preset temperature value T after the air conditioner is started for the preset time0Whether or not the relation | T-T is satisfied between0Error, | < t;
the control step is also used for controlling the absolute value of T-T0When the error is more than or equal to t, continuously controlling the first crossflow blower and the second crossflow blower to operate simultaneously, and controlling the rotating speed N of the first crossflow blower1Is N1maxAnd controlling the rotational speed N of the second crossflow blower2Is N2max。
Preferably, the first and second electrodes are formed of a metal,
the detecting step is also used for detecting whether the double-through-flow air conditioner is in a cooling mode or a heating mode, and the controlling step is also used for controlling the air conditioner to work when the absolute value of T-T is greater than the threshold value0|＜tError of the measurementWhen the first cross flow fan is established, the first cross flow fan is controlled to stop, operate at a low rotating speed or operate at a set rotating speed, and/or the second cross flow fan is controlled to stop, operate at a low rotating speedOr at a set rotational speed.
Preferably, the first and second electrodes are formed of a metal,
when the double-through-flow air conditioner is in a refrigeration mode and T-T0＜t1 errorWhen the second cross-flow fan stops or the rotating speed N is controlled2≤N2minIn which N is2minIs the preset running low rotating speed of the second cross-flow fan and controls the first cross-flow fan to rotate at the preset rotating speed N1 settingAnd (4) operating.
Preferably, the first and second electrodes are formed of a metal,
the preset rotating speed N of the first through flow fan1 settingSatisfies the following conditions: n is a radical of1min＜N1 set ≦N1maxIn which N is1minThe preset running low rotating speed of the first through flow fan.
Preferably, the first and second electrodes are formed of a metal,
when the double-cross-flow air conditioner is in a heating mode and T-T is adopted0＞-t2 error ofWhen the first continuous flow fan stops rotating or the rotating speed N is controlled1≤N1minIn which N is1minA preset running low rotating speed of the first cross flow fan and controlling the second cross flow fan to rotate at a preset rotating speed N2 settingAnd (4) operating.
Preferably, the first and second electrodes are formed of a metal,
preset rotation speed N of the second crossflow blower2 settingSatisfies the following conditions: n is a radical of2min＜N2 set is less than or equal toN2maxIn which N is2minA preset operating low speed for the second crossflow blower.
Preferably, the first and second electrodes are formed of a metal,
the double cross-flow air conditioner comprises a first air deflector arranged at the first air outlet, and the control step further comprises the step of adjusting the first air deflector to be upwards opened to a position parallel to an air duct molded line at the first air outlet when the first air outlet is used for exhausting air.
Preferably, the first and second electrodes are formed of a metal,
the double cross-flow air conditioner comprises a second air deflector arranged at the second air outlet, and the control step further comprises the step of adjusting the second air deflector to be downwards opened to a position parallel to an air duct molded line at the second air outlet when the second air outlet is used for exhausting air.
The control method of the double-through-flow air conditioner provided by the invention has the following beneficial effects:
1. according to the invention, after the air conditioner is started, the second cross-flow fan positioned below is controlled to operate at the maximum rotating speed, and the first cross-flow fan positioned above operates at the minimum rotating speed or less, so that a user can feel strong cold feeling or hot feeling through the wind with larger wind volume blown out from the air outlet below at the cooling/heating starting or initial stage, and the body feeling comfort level of the user at the initial stage of operation is improved; in a refrigeration mode: in the starting stage, considering that the environment temperature is higher and the human body has larger demand for cold, the rotating speed of the lower fan is kept to operate at a high speed, the air output of the lower air duct is increased, and the human body can feel stronger cold air. But also considering the supercooling problem of the evaporator at the corresponding part of the upper air duct and the condensation problem of the air deflectors at the upper air duct and the upper air inlet, the upper air duct is kept to operate at a low rotating speed, so that breeze is blown out; in the heating mode, at the initial stage of starting, the environmental temperature is low, so that the requirement of a human body on heat is met to the greatest extent, meanwhile, the evaporator at the corresponding position of the upper air duct is prevented from being overheated, the rotating speed of the upper fan is reduced, and the upper air duct only maintains a micro air outlet state; the lower fan runs at a high rotating speed, so that the wind speed of the lower air duct is higher, and a user can feel stronger warm air in the starting-up stage;
2. according to the invention, the rotating speeds of the upper and lower cross-flow fans are simultaneously set to be maximum after the air conditioner runs for a preset time, the maximum running power can be started from the opening of the air conditioner to drive the air conditioner to heat or refrigerate indoors, the air quantity of an indoor unit is increased, the refrigerating and heating quantity is increased, so that the room can quickly meet the requirements of users, the room can quickly rise and drop the temperature while the room load requirements are met, and the technical problem that the temperature cannot be quickly lowered or heated due to long temperature rise time in the refrigerating/heating process is effectively solved;
3. the invention also judges the current | T-T through setting a judging step0|≥tError of the measurementAnd controlling the first crossflow blower and the second crossflow blower to continuously and simultaneously operate and controlling the rotating speed N of the first crossflow blower1Is N1maxAnd/or control stationRotational speed N of the second crossflow blower2Is N2maxAfter the air conditioner is operated for a period of time for cooling or heating, the indoor environment temperature of the air conditioner does not reach the preset temperature T0When the error is within the range, the maximum operation power of the two fans is continuously started to drive the indoor unit to heat or refrigerate, so that the air quantity of the indoor unit is increased, the refrigerating and heating quantity and the heating and refrigerating speed are increased, the room can quickly meet the requirements of users, the room can quickly rise and fall temperature while the room load requirements are met, and the technical problem that the quick temperature reduction or heating cannot be realized due to long temperature rise time in the refrigerating/heating process is effectively solved;
4. meanwhile, after the indoor environment temperature reaches the set temperature, | T-T0|＜tError of the measurementThe lower air outlet is controlled not to discharge air or slightly discharge air during refrigeration, and the air is discharged through the upper air outlet, so that shower-type air discharge under a refrigeration mode is realized, cold air is prevented from directly blowing people, and the indoor large range is covered by the cold air, so that the indoor refrigeration comfort degree is improved; when the indoor environment temperature reaches the set temperature, the upper air outlet is controlled not to discharge air or slightly discharge air during heating, and the air is discharged through the lower air outlet, so that carpet type air discharge under a heating mode is realized, the bottom can be covered by hot air, the indoor large range is covered by the hot air, and the indoor refrigeration comfort degree is improved; the upper fan and the lower fan are adjusted according to different operation modes after the indoor temperature reaches the temperature set by a user, cold air is sent out from the upper air duct during refrigeration to realize shower type air supply, hot air flows out of the upper air duct tightly attached to the wall during heating to realize carpet type air supply, and the air supply enjoyment without wind sense is really brought to the user on the premise of meeting the room load requirement.
Drawings
FIG. 1 is a control flow diagram of a dual crossflow air conditioner control method of the present invention;
FIG. 2 is a schematic diagram of the operation and air-out of the fans with the lower fan being turned on and the upper fan being turned off (including the cooling mode and the heating mode) when the double cross-flow air conditioner of the present invention is started;
FIG. 3 is a schematic diagram of the operation and air-out of the fans of the lower fan and the upper fan which are simultaneously turned on at high power after the double cross-flow air conditioner is started for a preset time (including a cooling mode and a heating mode);
FIG. 4 is a schematic diagram of the operation and air outlet of the fan in the cooling mode after the dual cross-flow air conditioner of the present invention reaches a predetermined temperature range;
fig. 5 is a schematic diagram of the operation and air outlet of the fan in the heating mode after the dual cross-flow air conditioner of the present invention reaches the preset temperature range.
The reference numbers in the figures denote:
11. a first through flow fan; 12. a second crossflow blower; 21. a first air outlet; 22. a second air outlet; 31. a first air deflector; 32. a second air deflector; 4. an evaporator; 5. a panel.
Detailed Description
As shown in fig. 1 to 5, the present invention provides a method for controlling a dual cross flow air conditioner, which includes:
the double cross-flow air conditioner comprises a first cross-flow fan 11, a second cross-flow fan 12, a first air outlet 21 and a second air outlet 22, wherein the first air outlet 21 is arranged corresponding to the first cross-flow fan 11, the second air outlet 22 is arranged corresponding to the second cross-flow fan 12, and the first air outlet 21 is arranged above the second air outlet 22;
a detection step for detecting whether the air conditioner is in an on state;
a control step of controlling the first crossflow blower and the second crossflow blower to simultaneously operate and controlling the rotating speed N of the first crossflow blower after the air conditioner is started1Is less than or equal to N1minWhile controlling the rotation speed N of the second crossflow blower2Is N2maxIn which N is1minIs a preset minimum rotation speed, N, of the first through flow fan2maxThe preset maximum rotational speed of the second crossflow blower.
According to the invention, after the air conditioner is started, the second cross-flow fan positioned below is controlled to operate at the maximum rotating speed, and the first cross-flow fan positioned above operates at the minimum rotating speed or less, so that a user can feel strong cold feeling or hot feeling through the wind with larger wind volume blown out from the air outlet below at the cooling/heating starting or initial stage, and the body feeling comfort level of the user at the initial stage of operation is improved; in a refrigeration mode: in the starting stage, considering that the environment temperature is higher and the human body has larger demand for cold, the rotating speed of the lower fan is kept to operate at a high speed, the air output of the lower air duct is increased, and the human body can feel stronger cold air. But also considering the supercooling problem of the evaporator at the corresponding part of the upper air duct and the condensation problem of the air deflectors at the upper air duct and the upper air inlet, the upper air duct is kept to operate at a low rotating speed, so that breeze is blown out; in the heating mode, at the initial stage of starting, the environmental temperature is low, so that the requirement of a human body on heat is met to the greatest extent, meanwhile, the evaporator at the corresponding position of the upper air duct is prevented from being overheated, the rotating speed of the upper fan is reduced, and the upper air duct only maintains a micro air outlet state; the lower fan runs at a high rotating speed, the lower air duct is higher in air speed, and a user can feel stronger warm air in the starting-up stage.
Preferably, the first and second electrodes are formed of a metal,
a detection step for detecting the operation time of the air conditioner;
a control step for controlling the first crossflow blower and the second crossflow blower to operate simultaneously and controlling the rotating speed N of the first crossflow blower after the air conditioner is started for a preset time1Is N1maxAnd controlling the rotational speed N of the second crossflow blower2Is N2maxIn which N is1maxIs a preset maximum rotation speed, N, of the first through flow fan2maxThe preset maximum rotational speed of the second crossflow blower.
The rotating speeds of the upper and lower cross-flow fans are all set to be maximum after the air conditioner runs for a preset time, the maximum running power can be started from the air conditioner to drive the air conditioner to heat or refrigerate indoors, the air quantity of an indoor unit is increased, the refrigerating and heating quantity is increased, the room can quickly meet the requirement of a user, the room can quickly rise and fall in temperature while the room load requirement is met, and the technical problem that the temperature rise time is long during refrigerating/heating and the temperature cannot be quickly lowered or heated is effectively solved.
Preferably, the first and second electrodes are formed of a metal,
also comprises a judging step for judging the indoor environment temperature T and the preset temperature value T after the air conditioner is started for the preset time0Whether or not the relation | T-T is satisfied between0|＜tError of the measurement；
The control step is also used for controlling the absolute value of T-T0|≥tError of the measurementWhen the first crossflow blower and the second crossflow blower are continuously controlled to operate simultaneously, and the rotating speed N of the first crossflow blower is controlled1Is N1maxAnd controlling the rotational speed N of the second crossflow blower2Is N2max。
The invention judges the current | T-T by setting a judgment step0|≥tError of the measurementAnd controlling the first crossflow blower and the second crossflow blower to continuously and simultaneously operate and controlling the rotating speed N of the first crossflow blower1Is N1maxAnd/or controlling the rotational speed N of the second crossflow blower2Is N2maxAfter the air conditioner is operated for a period of time for cooling or heating, the indoor environment temperature of the air conditioner does not reach the preset temperature T0When the temperature of the indoor air is within the error range, the maximum operation power of the two fans is continuously started to drive the indoor air to heat or refrigerate, the air quantity of the indoor unit is increased, the refrigerating and heating quantity and the heating and refrigerating speed are increased, so that the room can quickly meet the requirements of users, the room can quickly rise and fall in temperature while meeting the load requirements of the room, and the technical problem that the temperature cannot be quickly lowered or heated due to long temperature rise time during refrigerating/heating is effectively solved. The invention aims to provide a control method for comfortable air supply of a double-through-flow indoor air conditioner. The control method comprises the following steps: a user sets a cooling/heating operation mode of the air conditioner, and the upper fan and the lower fan run at high speed simultaneously, so that the ambient temperature quickly reaches the temperature set by the user.
Preferably, the first and second electrodes are formed of a metal,
the detecting step is also used for detecting whether the double-through-flow air conditioner is in a cooling mode or a heating mode, and the controlling step is also used for controlling the air conditioner to work when the absolute value of T-T is greater than the threshold value0And when the error is less than l < t, controlling the first crossflow blower to stop, operate at a low rotating speed (the low rotating speed operation means operating to the lowest rotating speed of the first crossflow blower) or operate at a set rotating speed, and/or controlling the second crossflow blower to stop, operate at a low rotating speed (the low rotating speed operation means operating to the lowest rotating speed of the second crossflow blower) or operate at a set rotating speed.
The invention is a preferable method means of the detection step and the control step, namely, the invention can control different operation modes of the two fans according to different modes, can realize that the lower fan is closed or operated at low speed during refrigeration, the lower air outlet has no wind or low-speed air outlet, cold wind can not be influenced to blow people directly, the indoor comfort level is improved, the refrigeration realizes air outlet from the upper part, the shower type air outlet is realized, the indoor comfort level is increased, the upper fan is closed or operated at low speed during heating, the upper air outlet has no wind or low-speed air outlet, hot wind is blown out from the lower air outlet, the carpet type air outlet is realized, the indoor comfort level is increased, and energy waste caused by the fact that hot wind on the upper part of a room.
Preferably, the first and second electrodes are formed of a metal,
when the double-through-flow air conditioner is in a refrigeration mode and T-T0＜t1 errorWhen the second cross-flow fan stops or the rotating speed N is controlled2≤N2minIn which N is2minIs the preset running low rotating speed of the second cross-flow fan and controls the first cross-flow fan to rotate at the preset rotating speed N1 settingAnd (4) operating. This is the preferred control mode of the dual through-flow air conditioner of the present invention in the cooling mode, i.e., T-T0＜t1 errorIndicating that the temperature of the cold air for indoor refrigeration has reached the preset temperature T0Error (t) of1 error) The two fans can be turned off at the moment, the two fans are not required to be turned on at high power at the same time, the indoor comfort degree is also prevented from being influenced by the fact that the temperature is reduced again, the second cross-flow fan below the second cross-flow fan is turned off or the rotating speed of the second cross-flow fan is adjusted to be lower than the preset operation low rotating speed at the moment, cold air can be blown out from the first cross-flow fan above the second cross-flow fan basically, shower type air outlet is achieved, the refrigerating area is increased, and the indoor comfort degree is.
Preferably, the first and second electrodes are formed of a metal,
the preset rotating speed N of the first through flow fan1 settingSatisfies the following conditions: n is a radical of1min＜N1 set ≦N1maxIn which N is1minThe preset running low rotating speed of the first through flow fan. This is the preferred range of values for the preset rotational speed of the first through-flow fan of the present invention, i.e. N1min＜N1 set ≦N1maxCan make the first shaft passThe flow fan can run in the range between the minimum power below the maximum power to blow out the required cold air for refrigeration, so that the air-free and comfortable refrigeration cold air blowing of a user is realized, and the refrigeration comfort is improved.
Preferably, the first and second electrodes are formed of a metal,
t1 errorAt 5 ℃. The error value is the preferable numerical value of the invention, and the temperature ranges within +/-5 ℃ of the preset temperature are all temperature control range intervals reaching the invention.
Preferably, the first and second electrodes are formed of a metal,
when the double-cross-flow air conditioner is in a heating mode and T-T is adopted0＞-t2 error ofWhen the first continuous flow fan stops rotating or the rotating speed N is controlled1≤N1minIn which N is1minThe lowest rotating speed of the first crossflow blower is set and the second crossflow blower is controlled to rotate at a preset rotating speed N2 settingAnd (4) operating. This is the preferred control mode of the dual cross flow air conditioner of the present invention in the heating mode, i.e., T-T0＞-t2 error ofIndicating that the temperature of the cold air for indoor heating has risen to the preset temperature T0Error (t) of2 error of) The two fans can be turned off at the moment, the two fans are not required to be turned on at high power at the same time, the temperature is prevented from continuously rising again to cause indoor overheating and influence indoor comfort level, the first cross flow fan above the fan is turned off or the rotating speed of the first cross flow fan is adjusted to be lower than the preset operation low rotating speed at the moment, hot air can be basically blown out from the second cross flow fan below the first cross flow fan, carpet type air outlet is achieved, the heating area is increased, and the indoor comfort level is improved.
Preferably, the first and second electrodes are formed of a metal,
preset rotation speed N of the second crossflow blower2 settingSatisfies the following conditions: n is a radical of2min＜N2 set is less than or equal toN2maxIn which N is2minA preset operating low speed for the second crossflow blower. This is the preferred range of values for the preset rotational speed of the second crossflow blower of the present invention, i.e. N2min＜N2 set is less than or equal toN2maxThe second cross-flow fan can run in the range between the minimum power below the maximum power to blow out the required hot air for heating, so that the purpose of using the hot air is realizedThe breeze and comfortable heating hot air of the user is blown, and the heating comfort is improved.
Preferably, the first and second electrodes are formed of a metal,
t2 error ofAt 5 ℃. The error value is the preferable numerical value of the invention, and the temperature ranges within +/-5 ℃ of the preset temperature are all temperature control range intervals reaching the invention.
Preferably, the first and second electrodes are formed of a metal,
the double cross-flow air conditioner comprises a first air deflector 31 arranged at the first air outlet 21, and the control step further comprises adjusting the first air deflector 31 to be upwardly opened to a position parallel to the air duct profile at the first air outlet 21 (i.e. an extension line at the edge of the air outlet) when the first air outlet 21 is exhausted. The air outlet with the first air deflector is a preferable control mode in the invention, namely, the first air deflector is opened to the position parallel to the air outlet direction of the first air outlet when the air is discharged from the first air outlet, so that the blocking effect on the air outlet can be reduced, the air outlet speed and the air outlet area are increased, and the air outlet effect is improved.
Preferably, the first and second electrodes are formed of a metal,
the double cross-flow air conditioner comprises a second air deflector 32 arranged at the second air outlet 22, and the control step further comprises adjusting the second air deflector 32 to be opened downwards to a position parallel to the air duct profile at the second air outlet 22 (i.e. an extension line at the edge of the air outlet) when the second air outlet 22 is exhausted. The air outlet control method with the second air guide plate is a preferable control mode when the air is discharged from the second air outlet, namely, the second air guide plate is opened to the position parallel to the air outlet direction of the second air outlet when the air is discharged from the second air outlet, so that the blocking effect on the air outlet can be reduced, the air outlet speed and the air outlet area are increased, and the air outlet effect is improved.
The invention controls the air outlet speed of the upper air duct and the lower air duct by controlling the rotating speed of the upper fan and the lower fan at different operation stages of the air conditioner, thereby meeting the best comfortable feeling of human bodies at different operation moments of the air conditioner to the greatest extent. 1. In a refrigeration mode: in the starting stage, considering that the environment temperature is higher and the human body has larger demand for cold, the rotating speed of the lower fan is kept to operate at a high speed, the air output of the lower air duct is increased, and the human body can feel stronger cold air. But also takes the supercooling problem of the evaporator at the corresponding part of the upper air duct and the condensation problem of the air deflectors at the upper air duct and the upper air inlet into consideration, and the upper air duct is kept to operate at low rotating speed so as to blow out breeze. After the air conditioner operates for a period of time, in order to achieve the purpose of rapid temperature reduction of a room, the rotating speed of the upper fan is increased to be the same as that of the lower fan, the upper air inlet and the lower air inlet simultaneously refrigerate powerfully, and the temperature reduction effect of the whole machine is improved. The control method can realize the effect of no wind sense air supply at the lower air inlet, reduce the air speed at the lower air inlet and further improve the air speed at the upper air inlet, and can realize the effect of no wind sense air supply at the lower air inlet and the air supply of the shower room at the upper air inlet. Under the refrigeration control mode, the problem that cold air directly blows people is solved, the temperature drop rate of the whole machine is guaranteed, meanwhile, supercooling of the lower section of the evaporator of the lower air duct is avoided, and the problems of condensation of the lower air duct and the air deflector of the lower air opening are solved. 2. In the heating mode, at the initial stage of starting, the environmental temperature is low, so that the requirement of a human body on heat is met to the greatest extent, meanwhile, the evaporator at the corresponding position of the upper air duct is prevented from being overheated, the rotating speed of the upper fan is reduced, and the upper air duct only maintains a micro air outlet state; the lower fan runs at a high rotating speed, the wind speed of the lower air duct is larger, a user can feel stronger warm air in the starting-up stage, after the air conditioner runs for a period of time, the rotating speed of the upper fan is increased to be the same as that of the lower fan, and the upper air inlet and the lower air inlet simultaneously and powerfully heat, so that the aim of rapidly raising the temperature of a room is fulfilled. When the room temperature reaches the set temperature, the rotating speed of the upper fan is reduced to a micro air-out state, the evaporator at the corresponding position of the upper air duct is prevented from being overheated, the air speed of the lower air opening is further increased, warm air is mainly blown out from the lower air opening and is directly sent to the ground, carpet type air supply is achieved, and the temperature of the whole room is more uniform.
1) Refrigeration mode
In the starting stage, the air deflectors of the upper air opening and the lower air opening are opened, the lower fan runs at a high rotating speed, the upper fan runs at a low speed, the air speed of the lower air duct is higher, a user can feel stronger cold air in the starting stage, the upper air duct only maintains a micro air outlet state, and the problems of supercooling of an evaporator at the corresponding position of the upper air duct and condensation of the air deflectors of the upper air duct and the upper air opening are avoided; when the user enters a room, sweat often flows down to the back, so that the user feels the greatest cooling pleasure caused by direct blowing of cold air. If the upper motor and the lower motor are simultaneously started, the air quantity is smaller than that of the lower motor which is singly started, and the requirement of direct blowing of cold air on rapid cooling of a human body cannot be met.
The operation is carried out for a period of time, the rotating speed of the upper fan is increased to be the same as that of the lower fan, and the upper air port and the lower air port simultaneously carry out strong refrigeration, so that the temperature reduction effect of the whole machine is improved;
when the room temperature reaches the set temperature, the rotating speed of the lower fan is reduced to a micro air-out state, the effect of no wind sense air supply at the lower air inlet is achieved, the air speed at the lower air inlet is reduced, the air speed at the upper air inlet is further improved, cold air is mainly blown out from the upper air inlet, and shower type air supply is achieved. The control method can realize the wind-sense-free air supply at the lower air inlet and the air supply of the shower room at the upper air inlet, solve the problem that cold air directly blows people, ensure the temperature drop rate of the whole machine, and simultaneously avoid the supercooling problem of the evaporator at the corresponding position of the lower air passage and the condensation problem of the air deflectors at the lower air passage and the lower air inlet.
Note: the upper air deflector and the lower air deflector are both in an open state in the whole process
2) Heating mode
In the starting-up stage, the air deflectors of the upper air opening and the lower air opening are opened, the lower fan runs at a high rotating speed, the upper fan runs at a low speed, the air speed of the lower air duct is higher, a user can feel stronger warm air in the starting-up stage, the upper air duct only maintains a micro air-out state, and the evaporator at the corresponding position of the upper air duct is prevented from being overheated; when the user enters a room, the user often has a very large heat demand, so that the user feels the maximum heating pleasure brought by the direct blowing of hot air. If the upper motor and the lower motor are simultaneously started, the air volume is smaller than that of the lower motor which is singly started, and the comfort brought to a human body by hot air direct blowing cannot be met to the greatest extent.
The operation is carried out for a period of time, the rotating speed of the upper fan is increased to be the same as that of the lower fan, the upper air opening and the lower air opening simultaneously and powerfully heat, and the temperature rise effect of the whole machine is improved;
when the room temperature reaches the set temperature, the rotating speed of the upper fan is reduced to a micro air-out state, the evaporator at the corresponding position of the upper air duct is prevented from being overheated, the air speed of the lower air opening is further increased, warm air is mainly blown out from the lower air opening and is directly sent to the ground, carpet type air supply is achieved, and the temperature of the whole room is more uniform.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention. The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, several modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the protection scope of the present invention.

Claims (8)

1. A control method of a double-through-flow air conditioner is characterized in that: the method comprises the following steps:
the double cross-flow air conditioner comprises a first cross-flow fan (11), a second cross-flow fan (12), a first air outlet (21) and a second air outlet (22), wherein the first air outlet (21) is arranged corresponding to the first cross-flow fan (11), the second air outlet (22) is arranged corresponding to the second cross-flow fan (12), and the first air outlet (21) is arranged above the second air outlet (22);
a detection step for detecting whether the air conditioner is in an on state;
a control step of controlling the first crossflow blower and the second crossflow blower to simultaneously operate and controlling the rotating speed N of the first crossflow blower after the air conditioner is started1Is less than or equal to N1minWhile controlling the rotation speed N of the second crossflow blower2Is N2maxIn which N is1minIs a preset minimum rotation speed, N, of the first through flow fan2maxThe preset maximum rotating speed of the second cross flow fan is set;
the detecting step is also used for detecting whether the double-through-flow air conditioner is in a cooling mode or a heating mode, and the controlling step is also used for controlling the air conditioner to work when the absolute value of T-T is greater than the threshold value0|＜tError of the measurementWhen the first crossflow blower is established, controlling the first crossflow blower to stop, operate at a low rotating speed or operate at a set rotating speed, and/or controlling the second crossflow blower to stop, operate at a low rotating speed or operate at a set rotating speed;
when the double-cross-flow air conditioner is in a heating mode and T-T is adopted0＞-t2 error ofWhen the first continuous flow fan stops rotating or the rotating speed N is controlled1≤N1minIn which N is1minA preset minimum rotating speed of the first cross flow fan and controlling the second cross flow fan to rotate at a preset rotating speed N2 settingAnd (4) operating.
2. The control method according to claim 1, characterized in that:
a detection step for detecting the operation time of the air conditioner;
a control step for controlling the first crossflow blower and the second crossflow blower to operate simultaneously and controlling the rotating speed N of the first crossflow blower after the air conditioner is started for a preset time1Is N1maxAnd controlling the rotational speed N of the second crossflow blower2Is N2maxIn which N is1maxIs a preset maximum rotation speed, N, of the first through flow fan2maxThe preset maximum rotational speed of the second crossflow blower.
3. The control method according to claim 2, characterized in that:
also comprises a judging step for judging the indoor environment temperature T and the preset temperature value T after the air conditioner is started for the preset time0Whether or not the relation | T-T is satisfied between0|＜tError of the measurement；
The control step is also used for controlling the absolute value of T-T0|≥tError of the measurementWhen the first crossflow blower and the second crossflow blower are continuously controlled to operate simultaneously, and the rotating speed N of the first crossflow blower is controlled1Is N1maxAnd controlling the rotational speed N of the second crossflow blower2Is N2max。
4. The control method according to claim 1, characterized in that:
when the double-through-flow air conditioner is in a refrigeration mode and T-T0＜t1 errorWhen the second cross-flow fan stops or the rotating speed N is controlled2≤N2minIn which N is2minIs the preset running low rotating speed of the second cross-flow fan and controls the first cross-flow fan to rotate at the preset rotating speed N1 settingAnd (4) operating.
5. The control method according to claim 4, characterized in that:
the preset rotating speed N of the first through flow fan1 settingSatisfies the following conditions: n is a radical of1min＜N1 set ≦N1maxIn which N is1minThe preset minimum rotating speed of the first through flow fan is provided.
6. The control method according to claim 1, characterized in that:
preset rotation speed N of the second crossflow blower2 settingSatisfies the following conditions: n is a radical of2min＜N2 set is less than or equal toN2maxIn which N is2minA preset operating low speed for the second crossflow blower.
7. The control method according to any one of claims 1 to 6, characterized in that:
the double-cross-flow air conditioner comprises a first air deflector (31) arranged at the first air outlet (21), and the control step further comprises the step of adjusting the first air deflector (31) to be opened upwards to a position parallel to an air duct profile at the first air outlet (21) when the first air outlet (21) is exhausted.
8. The control method according to any one of claims 1 to 6, characterized in that:
the double cross-flow air conditioner comprises a second air deflector (32) arranged at the second air outlet (22), and the control step further comprises the step of adjusting the second air deflector (32) to be opened downwards to a position parallel to the air duct profile at the second air outlet (22) when the second air outlet (22) is exhausted.
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