WO2021037138A1 - 空调器预热控制方法、装置及空调器 - Google Patents

空调器预热控制方法、装置及空调器 Download PDF

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Publication number
WO2021037138A1
WO2021037138A1 PCT/CN2020/111720 CN2020111720W WO2021037138A1 WO 2021037138 A1 WO2021037138 A1 WO 2021037138A1 CN 2020111720 W CN2020111720 W CN 2020111720W WO 2021037138 A1 WO2021037138 A1 WO 2021037138A1
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Prior art keywords
temperature
air conditioner
preheating
outdoor
mode
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PCT/CN2020/111720
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English (en)
French (fr)
Inventor
刘涛
刘庆赟
杜路明
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青岛海尔空调器有限总公司
海尔智家股份有限公司
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Publication of WO2021037138A1 publication Critical patent/WO2021037138A1/zh

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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00Control or safety arrangements
    • F24F11/62Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
    • F24F11/63Electronic processing
    • F24F11/64Electronic processing using pre-stored data
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00Control or safety arrangements
    • F24F11/62Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
    • F24F11/63Electronic processing
    • F24F11/65Electronic processing for selecting an operating mode
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00Control or safety arrangements
    • F24F11/70Control systems characterised by their outputs; Constructional details thereof
    • F24F11/80Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air
    • F24F11/87Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling absorption or discharge of heat in outdoor units
    • F24F11/871Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling absorption or discharge of heat in outdoor units by controlling outdoor fans
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2110/00Control inputs relating to air properties
    • F24F2110/10Temperature
    • F24F2110/12Temperature of the outside air
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2140/00Control inputs relating to system states
    • F24F2140/20Heat-exchange fluid temperature

Definitions

  • the present invention relates to the technical field of air conditioners, in particular to an air conditioner preheating control method, device and air conditioner.
  • the Chinese Invention Patent Publication No. 201593848 discloses an air conditioner with a heating device, which is composed of an air conditioner and a heating body assembly.
  • the heating body assembly is installed on the air inlet or outlet of the indoor part of the air conditioner. Wind side.
  • the heating body works, thereby enhancing the heating effect of the air conditioner.
  • a heating body is added when the air conditioner is heating, although the heating effect of the air conditioner can be enhanced, but the air conditioner cannot be preheated, and the heating mode cannot be activated to directly blow out hot air, and the user experience is poor.
  • the purpose of the present invention is to provide a preheating control method, device and air conditioner for an air conditioner, which are used to solve or partially solve the problem that the existing air conditioner cannot realize the starting heating mode and can directly blow out hot air, resulting in poor user experience.
  • the first aspect of the present invention provides a preheating control method for an air conditioner, which includes: controlling the air conditioner to enter the preheating mode according to a start instruction; controlling the operation of the compressor, expansion valve and outdoor fan of the air conditioner, Preheat the indoor heat exchanger; monitor the temperature of the outer coil of the outdoor heat exchanger, the outdoor ambient temperature, and the temperature of the inner coil of the indoor heat exchanger in real time; when the temperature of the inner coil is less than the preset temperature, When the temperature of the outer coil is greater than or equal to the outdoor ambient temperature, the outdoor fan is controlled to stop running.
  • the method before controlling the air conditioner to enter the preheating operation mode according to the start instruction, the method further includes: judging whether the air conditioner meets the preheating start condition.
  • the preheating start conditions specifically include: the air conditioner is allowed to turn on the preheating mode; the outdoor ambient temperature is lower than the preset outdoor temperature, and the indoor ambient temperature is lower than the preset indoor temperature; and the air conditioner At least one of the components of the internal and external machines in normal operation.
  • the starting instruction specifically includes: immediately starting the preheating mode; or starting the preheating mode at a preset time; or starting the preheating mode at a preset time before the set air conditioner on time.
  • controlling the operation of the compressor, expansion valve and outdoor fan of the air conditioner, and preheating the indoor heat exchanger specifically includes: according to the internal coil temperature and its change trend, the specific preheating mode Run for control and adjustment.
  • the specific operation of the preheating mode is controlled and adjusted specifically including: when the temperature of the inner coil is less than the first preset temperature and is in an upward trend , Controlling the air conditioner to operate in the first preheating mode; when the inner coil temperature is greater than or equal to the first preset temperature and is in an upward trend, controlling the air conditioner to operate in the second preheating mode; when the When the temperature of the inner coil is greater than or equal to the second preset temperature and is in a downward trend, control the air conditioner to operate in the third preheating mode; when the temperature of the inner coil is lower than the second preset temperature and is in a downward trend, control The air conditioner operates in the fourth preheating mode.
  • controlling the outdoor fan to stop operation specifically includes: in the air conditioner operating in the first preheating mode or the fourth preheating mode, when the outer coil temperature is greater than or equal to the outdoor ambient temperature, controlling the outdoor fan to stop running; otherwise, Control the outdoor fan to run at the preset speed of the external fan.
  • the preheating control method further includes: monitoring the air conditioner for faults, and controlling the air conditioner to stop running the preheating mode when the air conditioner is detected to be faulty; or, when the air conditioner receives a start command or stops When running the preheating mode command, stop the preheating mode; or, when the air conditioner runs in the preheating mode for a set time, stop the preheating mode.
  • a preheating control device for an air conditioner including: a preheating start module for controlling the air conditioner to enter a preheating mode according to a start instruction; a preheating control module for controlling the compressor of the air conditioner , Expansion valve and outdoor fan are running to preheat the indoor heat exchanger; monitoring module is used to monitor the temperature of the outer coil of the outdoor heat exchanger, outdoor ambient temperature and the temperature of the inner coil of the indoor heat exchanger in real time; outdoor fan The control module is used to control the outdoor fan to stop running when the temperature of the outer coil is greater than or equal to the outdoor ambient temperature when the temperature of the inner coil is less than a preset temperature.
  • an air conditioner including the above-mentioned air conditioner preheating control device; wherein the monitoring module includes temperature sensors installed at indoor, outdoor, and outer coils and inner coils of the air conditioner, respectively.
  • the present invention provides an air conditioner preheating control method, device and air conditioner.
  • a compressor, an expansion valve and an outdoor fan Through the operation of a compressor, an expansion valve and an outdoor fan, a high-temperature medium is generated to flow through an indoor heat exchanger, thereby preheating the indoor heat exchanger.
  • the outdoor fan is controlled to stop running, which will reduce the heat dissipation of the air-conditioning system to achieve energy saving effect.
  • FIG. 1 is a schematic diagram of the main flow of an air conditioner preheating control method according to an embodiment of the present invention
  • FIG. 2 is a schematic diagram of a specific flow of an air conditioner preheating control method according to an embodiment of the present invention
  • Fig. 3 is a schematic diagram of the preheating mode division interval in an embodiment of the present invention.
  • An embodiment of the present invention provides a preheating control method for an air conditioner.
  • the method includes: step S100, controlling the air conditioner to enter a preheating mode according to a start instruction; step S102, controlling the compressor, expansion valve, and The outdoor fan runs to preheat the indoor heat exchanger; step S104, real-time monitoring of the outer coil temperature of the outdoor heat exchanger, the outdoor ambient temperature and the inner coil temperature of the indoor heat exchanger; step S106, the inner coil temperature When the temperature is less than the preset temperature, when the temperature of the outer coil is greater than or equal to the outdoor ambient temperature, the outdoor fan is controlled to stop running.
  • the air conditioner enters the preheating mode when needed according to the start command.
  • the preheating mode is mainly through the operation of the compressor, expansion valve and outdoor fan to generate high-temperature medium to flow through the indoor heat exchanger, and then preheat the indoor heat exchanger, so that the inner coil of the indoor heat exchanger is turned on in the air conditioner
  • the indoor fan can directly blow out hot air, which can increase the heating speed of the air conditioner, realize the effect of heating only after turning on the air conditioner, and improve the user experience.
  • the operation of the outdoor fan is controlled and adjusted according to the specific state of the temperature of the inner coil and the comparison between the temperature of the outer coil of the outdoor heat exchanger and the outdoor ambient temperature.
  • the outdoor fan is controlled to stop running. Because at this time, if the outdoor fan is running, the heat at the outer coil will be dissipated to the outside, resulting in heat loss; controlling the outdoor fan to stop running will reduce the amount of heat dissipation from the air conditioning system, thereby achieving energy-saving effects.
  • the outdoor fan is controlled to run at the preset speed of the outer fan.
  • the preheating mode is performed before the air conditioner enters the heating mode.
  • the indoor unit of the air conditioner does not operate, and the standby indicator always remains off; the indoor fan and wind deflector are in a stopped operation state; to avoid disturbing the indoor environment and reducing user experience.
  • the four-way valve is kept open; and in order to make the expansion valve have a stable degree of superheat, so that the air-conditioning system can operate stably, the expansion valve always adjusts the degree of superheat according to the normal adjustment method.
  • the method further includes: step S200: determining whether the air conditioner meets the preheating start condition. Before controlling the air conditioner to enter the preheating mode, adding a judgment process can provide users with more choices.
  • the preheating start conditions specifically include: the air conditioner is allowed to turn on the preheating mode; detecting whether the air conditioner is allowed to turn on the preheating mode, and the air conditioner can only be allowed to turn on the preheating mode. Start preheating mode.
  • Adding an air conditioner permission determination step allows users to determine whether the preheating mode function needs to be turned on according to actual needs. Because the preheating mode consumes power, some customers do not care about waiting for the preheating time after turning on the power in order to save part of the power. , Added a permission determination step, so that users have more freedom to choose.
  • the preheating start conditions may also include: the outdoor environment temperature is lower than the preset outdoor temperature, and the indoor environment temperature is lower than the preset indoor temperature; the determination of the outdoor environment temperature and the indoor environment temperature is increased to make the air conditioner more intelligent.
  • the preheating operation mode is turned on only when the outdoor ambient temperature and the indoor ambient temperature are both lower than a set value, so as to avoid the situation of randomly turning on the preheating mode under the condition of not blowing cold wind.
  • the preset outdoor temperature can be 17°C, of course, can also be other values, such as 14°C, etc.
  • the preset indoor temperature can be 22°C, of course, it can also be other values, such as 20°C.
  • the preheating start conditions may also include: the normal operation of the internal and external components of the air conditioner. That is to say, both the internal and external units of the air conditioner can start, run, and shut down normally, and there is no abnormal shutdown problem.
  • the start instruction specifically includes: immediately start the preheating mode; or start the preheating mode at a preset time; or start the preheating at a preset time before the set air conditioner on time mode. Based on these start instructions, step S202 ( Figure 2) can be executed.
  • the air conditioner can control the air conditioner to enter the preheating mode by receiving the user's instruction to turn on the preheating. Similar to the determination of the right item of adding an air conditioner, the user can actively turn on the preheating command to realize the preheating of the air conditioner, which enables the user to have more choices.
  • the air conditioner can also be controlled to enter the preheating mode when the preset time for turning on the preheating instruction is reached.
  • the user can also directly set the preset preheating command time according to actual needs.
  • the air conditioner will be controlled to turn on the preheating mode, so that the user has more autonomous control functions and is more user-friendly.
  • the user can also set the power-on time of the air conditioner, and set the air conditioner to start the preheating mode at a preset time before turning on the air conditioner.
  • control method further includes step S204, controlling the operation of the compressor, expansion valve and outdoor fan of the air conditioner, and preheating the indoor heat exchanger, which specifically includes: according to the temperature of the inner coil and Its changing trend controls and adjusts the specific operation of the preheating mode.
  • the inner coil is the pipeline of the evaporator of the indoor unit in the air conditioner.
  • the inner coil provides basic conditions for selecting the preheating operation mode.
  • there are various ways to obtain the temperature of the coil such as direct acquisition through the temperature sensor on the coil, or indirectly through the temperature sensor at the air outlet.
  • it can also detect the real-time pressure when the refrigerant enters and exits the coil.
  • the method of calculating the coil temperature indirectly through the pressure difference, and so on.
  • the method of judging the temperature of the coil can be that the temperature sensor sends the temperature of the coil to the control unit of the air conditioner.
  • the air conditioner judges the specific value and change trend of the coil temperature based on the multiple sets of data fed back. The judgment process is a more conventional operation. No more detailed expansion.
  • the specific operation of the preheating mode is controlled and adjusted specifically including: when the temperature of the inner coil is less than the first preset temperature and When in an upward trend, the air conditioner is controlled to operate in the first preheating mode. As shown in Figure 3, this stage is an ascending stage, and when the coil temperature is lower than the first preset temperature, it is necessary to raise the preheating temperature above the first preset temperature as soon as possible to ensure that the air conditioner does not blow cold air. At this time, the air conditioner is controlled to turn on the first preheating mode to accelerate the temperature rise.
  • the adjustment parameters of the first preheating mode of the present invention include at least the opening degree of the expansion valve, the compressor frequency, and the rotation speed of the outdoor fan.
  • the first preset temperature of the present invention may be 40°C, at which temperature the air conditioner will not initially blow cold air;
  • the adjustment parameter of the first preheating mode may be: the compressor frequency is the regular preheating frequency (for example, 32 Hz) ,
  • the expansion valve opening is the normal preheating opening (for example, 130B, B represents the number of steps, the expansion valve usually has 480B), and the outdoor fan speed is the normal preheating speed (for example, 300rpm).
  • the above-mentioned first preset temperature, the regular preheating frequency of the compressor, the regular preheating opening degree of the expansion valve, and the regular preheating speed of the outdoor fan are not fixed and can be adjusted according to the air conditioner model and other factors.
  • the larger, normal, and smaller values can also be adjusted according to specific application scenarios.
  • the principle of the present invention is to use the difference of the same parameter in different modes, and the protection scope should not be limited to the numerical value of each parameter.
  • the air conditioner When the temperature of the inner coil is greater than or equal to the first preset temperature and is in an upward trend, the air conditioner is controlled to operate in the second preheating mode. As shown in Figure 3, this stage is still rising, but the temperature of the inner coil is already higher than the first preset temperature. At this time, cold air is no longer blown. It is only necessary to maintain the temperature of the inner coil within a reasonable range. Control the air conditioner to turn on the second preheating mode at time, and reduce the heating rate until it can no longer continue to rise. Similar to the first preheating mode, the adjustment parameters of the second preheating operation mode of the present invention include at least the opening degree of the expansion valve, the compressor frequency and the rotation speed of the outdoor fan.
  • the adjustment parameters of the second warm-up operation mode of the present invention may be: the compressor frequency is a smaller warm-up frequency (for example, 20 Hz), and the expansion valve opening is a larger warm-up opening (for example, 480B, full Opening degree), the outdoor fan speed is a larger preheating speed (for example, 600 rpm).
  • the smaller preheating frequency of the compressor, the larger preheating opening degree of the expansion valve, and the larger preheating speed of the outdoor fan are not fixed and can be adjusted according to the air conditioner model and other factors.
  • the larger, normal, and smaller values can also be adjusted according to specific application scenarios.
  • the principle of the present invention is to use the difference of the same parameter in different modes, and the protection scope should not be limited to the numerical value of each parameter.
  • the air conditioner is controlled to operate in the third preheating mode; as shown in Figure 3, the temperature will no longer continue to rise at this stage, and the change trend will enter a downward stage, but this Since the highest temperature is used as the starting point, as long as it is not lower than the second set temperature, there will be no risk of blowing cold air.
  • control the air conditioner to turn on the third preheating mode, as long as the inner coil temperature is maintained as long as possible. Just slow it down.
  • the adjustment parameters of the third preheating mode of the present invention at least include expansion valve opening, compressor frequency and outdoor fan speed.
  • the second preset temperature of the present invention may be 38°C;
  • the adjustment parameters of the third preheating mode may be: the compressor frequency is a smaller preheating frequency (for example, 22 Hz), and the expansion valve opening is larger The preheating opening degree (for example, 470B), the outdoor fan speed is a larger preheating speed (for example, 580 rpm).
  • the smaller preheating frequency of the compressor, the larger preheating opening degree of the expansion valve, and the larger preheating speed of the outdoor fan are not fixed and can be adjusted according to the air conditioner model and other factors.
  • the larger, normal, and smaller values can also be adjusted according to specific application scenarios.
  • the principle of the present invention is to use the difference of the same parameter in different modes, and the protection scope should not be limited to the numerical value of each parameter.
  • the air conditioner is controlled to operate in the fourth preheating mode. As shown in Figure 3, this stage is still in the falling stage.
  • the third preheating mode can no longer maintain the temperature of the inner coil above the second preset temperature. If the temperature continues to drop, it may cause cold air to occur.
  • the air conditioner controls the air conditioner to turn on the fourth preheating mode, compared with the third preheating mode, the coil generates more heat to prevent it from continuing to cool down, so that the coil temperature enters the heating phase again.
  • the adjustment parameters of the fourth preheating mode of the present invention at least include expansion valve opening, compressor frequency and outdoor fan speed.
  • the adjustment parameters of the fourth preheating mode of the present invention may be: the compressor frequency is the regular preheating frequency (for example, 30Hz), the expansion valve opening is the regular preheating opening (for example, 133B), and the outdoor fan speed is regular Warm-up speed (for example, 310 rpm).
  • compressor regular preheating frequency, expansion valve regular preheating opening degree, and outdoor fan regular preheating speed are not fixed and can be adjusted according to factors such as the air conditioner model.
  • the larger, normal, and smaller values can also be adjusted according to specific application scenarios.
  • the principle of the present invention is to use the difference of the same parameter in different modes, and the protection scope should not be limited to the numerical value of each parameter.
  • the air conditioner can select the preheating mode more accurately according to the actual temperature and change trend of the inner coil temperature, reducing energy waste and reducing the fluctuation range of the inner coil temperature.
  • controlling and adjusting the specific operation of the preheating mode according to the temperature of the inner coil and its change trend further includes: the first preset temperature is greater than or equal to the second preset temperature. Both the first preset temperature and the second preset temperature are temperatures at which the air conditioner does not blow cold wind.
  • the set temperature for changing the preheating operation mode can be different, for example, the first preset temperature set in the rising phase is higher than the second preset temperature set in the falling phase, In order to prevent the compressor from rising and falling frequently, and the external fan is frequently switched on and off, it is equivalent to making a differential temperature.
  • the temperature of the inner plate is stabilized at about the first preset temperature, so that the inner plate temperature is not too high and the machine stops, and the temperature of the inner plate is too low. effect.
  • both the first preheating mode and the fourth preheating mode require rapid heating.
  • the second preheating operation mode and the third preheating operation mode both need to maintain the temperature. Therefore, in order to reduce the compressor frequency and the expansion valve opening And the frequent change of the outdoor fan speed, of course, the parameters of the first preheating mode and the fourth preheating mode can also be set to the same, and/or, the second preheating operation mode and the third preheating operation mode can also be identical.
  • controlling the outdoor fan to stop operation specifically includes: performing the first preheating mode or the fourth preheating mode in the air conditioner In operation, when the temperature of the external coil is greater than or equal to the outdoor ambient temperature, the outdoor fan is controlled to stop running; otherwise, the outdoor fan is controlled to run at the preset speed of the external fan.
  • the air conditioner when the air conditioner is running in the first preheating mode or the fourth preheating mode, when the temperature of the outer coil is lower than the outdoor ambient temperature; or the air conditioner is running in the second preheating mode or the third preheating mode; control the outdoor fan according to The speed of the external fan is preset to run.
  • the preheating control method further includes: performing fault monitoring on the air conditioner, and controlling the air conditioner to stop operating the preheating mode when the air conditioner is detected to be faulty; or, when the air conditioner receives When the power-on command or the command to stop running the preheating mode, the preheating mode is stopped; or, when the air conditioner is running for a set time in the preheating mode, the preheating mode is stopped.
  • the preheating mode can be stopped to avoid misoperation.
  • the user can manually pause the preheating mode to avoid the situation that the user cannot stop the air conditioner from misoperation, which causes energy waste.
  • the preheating operation mode has been running and the user has not turned on the air conditioner, it may be that the user's arrival time will be very late. At this time, if the preheating operation mode is always turned on, it will also cause a waste of energy. Therefore, set a preset time.
  • 30 minutes can also be an hour and so on, which can prevent the user from turning on the air conditioner later than the preset time, or the user does not return overnight, causing the warm-up operation mode to be turned on all the time, which wastes electrical energy.
  • the opening degree of the expansion valve, the compressor frequency and the wind speed of the outdoor fan can also be determined according to the ambient temperature of the outdoor unit, which can make more appropriate adjustments to the outdoor environment to make the temperature control of the inner coil more accurate.
  • the regular preheating frequency can be 32Hz
  • the regular preheating opening degree can be 130B
  • the regular external fan speed can be 300rpm, which is more
  • the small preheating frequency can be 20Hz
  • the larger preheating opening degree can be 470B
  • the larger preheating external fan speed can be 550rpm
  • the regular preheating frequency can be 23Hz
  • the conventional preheating opening degree can be 135B
  • the conventional external fan speed can be 320B
  • the smaller preheating frequency can be 17Hz
  • the larger preheating opening degree can be 475B
  • the larger preheating speed can be 570rpm
  • the expansion valve opening, compressor frequency, and outdoor fan wind speed can be adjusted to the target value at the same time to make the adjustment faster.
  • the preheating control interval can obviously be divided into not only the four listed in the present invention, but also six, eight, etc., by adding more preset values similar to the first preset temperature and the second preset temperature, That is, the ascending phase and the descending phase can be divided into more regions to achieve more precise control.
  • an air conditioner preheating control device adopts the air conditioner preheating control method described in the foregoing embodiment, and includes: a preheating start module for controlling the air conditioner according to a start instruction
  • the preheating control module is used to control the operation of the compressor, expansion valve and outdoor fan of the air conditioner, and the indoor heat exchanger is preheated;
  • the monitoring module is used to monitor the outer plate of the outdoor heat exchanger in real time Tube temperature, outdoor ambient temperature and the inner coil temperature of the indoor heat exchanger;
  • outdoor fan control module used when the inner coil temperature is less than the preset temperature, when the outer coil temperature is greater than or equal to the outdoor ambient temperature , Control the outdoor fan to stop running.
  • an air conditioner warm-up control device further includes: a judgment module for judging whether the air conditioner meets the warm-up starting condition before controlling the air conditioner to enter the warm-up operation mode according to the starting instruction.
  • the monitoring module can also be used to monitor the temperature of the inner coil of the indoor heat exchanger and the indoor temperature in real time.
  • the preheating control module specifically includes a first preheating control module, a second preheating control module, a third preheating control module, and a fourth preheating control module.
  • an air conditioner includes the air conditioner preheating control device described in the foregoing embodiment; wherein the monitoring module includes indoor, outdoor, and outer coils and inner coils of the air conditioner The temperature sensor is set separately at each location.
  • this embodiment provides a preheating control method of an air conditioner, which is based on a complete air conditioner refrigerant system and temperature sensor.
  • the preheating control method runs the refrigerant system in advance to raise the temperature of the inner disk before the user starts heating; the control method is not limited to the selection and setting of parameters related to temperature, valve opening, fan speed, and component action; preheating mode interval division is related
  • the parameter settings include but are not limited to the above parameter settings.
  • the preheating mode interval division is not limited to the above four intervals. Other heat storage frequencies, valve openings, and speeds can be set by increasing the temperature point.
  • the scope of application of this preheating control method is not limited to common cabinets, on-hooks, multi-line, hot air blowers and other air-conditioning facilities. Designed to speed up the heating and air blowing time; increase the temperature of the first hot air.
  • the preheating control method is specifically as follows: when the indoor and outdoor temperature reaches the preheating demand, when the user does not turn on the mechanism to heat up, turn on the press for a period of time (for example, 20-30min, or longer) for low frequency (for example, 30Hz or even lower) ) Refrigerant system heat storage (refer to the action of each component of the heating and refrigerant system, but before the user starts the preheating process, the indoor unit guide plate does not operate, the panel does not display, the indoor fan does not operate, only the outdoor unit compressor, outdoor fan, expansion The valve and the four-way valve perform the necessary actions).
  • the air-conditioning system is complete (the indoor unit and outdoor unit are complete, and can be cooled and heated normally), and it is in the power-on and shutdown state.
  • the preheating entry conditions include the necessary conditions: the user allows the heat storage function before heating to be turned on; the ambient temperature of the outdoor unit side is lower than a certain temperature (for example, ⁇ 17°C), and the ambient temperature of the indoor unit is lower than a certain temperature (for example, ⁇ 20°C) ); There is no fault in the internal and external machines.
  • Warm-up mode startup method the user manually turns on the warm-up button (including remote control, mobile phone APP turn on); user-set timing to turn on (such as 10:00am-11:00am to turn on the warm-up function); before the user sets the boot time 30min (settable) to turn on (for example, the user sets the power on at 11:00am, the preheating program will start at 10:30am for heat storage, and the heat storage for 30min (settable) turns off on time, or after the user turns on, the heat storage transfers directly Hot boot).
  • user-set timing to turn on such as 10:00am-11:00am to turn on the warm-up function
  • boot time 30min settable
  • the change of the coil temperature of the outdoor heat exchanger T e and the outdoor ambient temperature Tao is specifically as follows: First, T e -T ao ⁇ 0°C, T e -Tao > 0°C after a certain time t 1. If T e -T ao > 0°C, when the outdoor fan is turned on, it will dissipate heat and waste energy.
  • the system will reduce the heat dissipation to the outside, thus achieving the energy saving effect and reducing the external heat storage. Heat dissipation, energy saving, and speed up the time for the inner plate to reach temperature during heat storage.
  • the outdoor fan When the air conditioner is running in the first or fourth preheating mode, if the outdoor coil temperature ⁇ the outdoor ambient temperature, the outdoor fan will stop (0rpm); if the outdoor coil temperature ⁇ the outdoor ambient temperature, the outdoor fan will be set Run at constant wind speed.
  • Preheating mode exit conditions internal and external machine failure detection, there is a fault; the user turns on and enters other functions; the user has no other operations, and the cumulative running time (for example, 30min, can be set) is reached; the user manually turns off the heat storage function before heating; the user refuses Turn on the heat storage function before heating.
  • the cumulative running time for example, 30min, can be set
  • the present invention can match different preheating operation modes according to the difference of the outer ring temperature, the temperature of the inner coil, and the change trend of the temperature of the inner coil, and make more reasonable parameter formulations, so as to make more reasonable parameters.
  • Precisely control the temperature of the coil to ensure that the temperature of the inner coil is more stable and the range of temperature jumps is smaller without repeatedly starting and stopping the compressor, thereby reducing energy waste and avoiding unstable blowing temperature .
  • Using four preheating modes it can subdivide the interval and control the coil temperature more accurately without wasting energy.
  • users have more control options, and can also avoid the waste of energy caused by some special circumstances. Similarly, it can solve the waste of energy in some special situations.

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Abstract

一种空调器预热控制方法、装置及空调器,包括:根据启动指令,控制空调器进入预热模式;控制空调器的压缩机、膨胀阀和室外风机运行,对室内换热器进行预热;实时监测室外换热器的外盘管温度、室外环境温度以及室内换热器的内盘管温度;在内盘管温度小于预设温度的情况下,当外盘管温度大于等于室外环境温度时,控制室外风机停止运行。本发明提供的一种空调器预热控制方法、装置及空调器,通过压缩机、膨胀阀和室外风机的运行,对室内换热器进行预热,从而在空调开机时,室内风机可直接吹出热风,提升用户体验;控制室外风机停止运行,会减少空调系统向外散热量,从而达到节能效果。

Description

空调器预热控制方法、装置及空调器 技术领域
本发明涉及空调技术领域,特别是涉及一种空调器预热控制方法、装置及空调器。
背景技术
冬季由于室内温度较低,空调器在刚刚开机制热时,室内换热器的盘管温度较低,此时吹出的风与室内温度相似,从而造成空调器吹冷风的情况,导致制热效果不能使用户满意。虽然市场上有防冷风的延时或者判断内盘温度才吹风的设计,但是会大大延长用户等待使用空调制热模式下制热效果的时间。
现有技术中,公开号为201593848的中国发明专利公开了一种带有加热装置的空调器,是由空调器和加热体组件组成,加热体组件安装在空调器室内部分的进风侧或出风侧。当低温情况下空调器制热时,加热体工作,从而增强空调器的制热效果。
现有技术中在空调器制热时增加加热体,虽然可以增强空调器的制热效果,但是无法对空调器进行预热,无法实现启动制热模式就能直接吹出热风,用户体验较差。
发明内容
(一)要解决的技术问题
本发明的目的是提供一种空调器预热控制方法、装置及空调器,用于解决或部分解决现有空调器无法实现启动制热模式就能直接吹出热风,用户体验较差的问题。
(二)技术方案
为了解决上述技术问题,本发明第一方面,提供一种空调器预热控制方法,包括:根据启动指令,控制空调器进入预热模式;控制空调器的压缩机、膨胀阀和室外风机运行,对室内换热器进行预热;实时监测室外换热器的外盘管温度、室外环境温度以及室内换热器的内盘管温度;在所述内盘管温度小于预设温度的情况下,当所述外盘管温度大于等于室外环境温度时,控制室外风机停止运行。
在上述方案的基础上,根据启动指令,控制空调器进入预热运行模式之前还包括:判断空调器是否满足预热启动条件。
在上述方案的基础上,所述预热启动条件具体包括:空调器被允许开启预热模式;室外环境温度低于预设室外温度,且室内环境温度低于预设室内温度;以及空调器的内外机各部件正常运行中的至少一个。
在上述方案的基础上,所述启动指令具体包括:立即启动预热模式;或者在预设时间启动预热模式;或者在设定的空调器开启时间前预设时间启动预热模式。
在上述方案的基础上,控制空调器的压缩机、膨胀阀和室外风机运行,对室内换热器进行预热具体包括:根据所述内盘管温度以及其变化趋势,对预热模式的具体运行进行控制调节。
在上述方案的基础上,根据所述内盘管温度以及其变化趋势,对预热模式的具体运行进行控制调节具体包括:当所述内盘管温度小于第一预设温度且处于上升趋势时,控制所述空调器以第一预热模式运行;当所述内盘管温度大于等于第一预设温度且处于上升趋势时,控制所述空调器以第二预热模式运行;当所述内盘管温度大于等于第二预设温度且处于下降趋势时,控制所述空调器以第三预热模式运行;当所述内盘管温度小于第二预设温度且处于下降趋势时,控制所述空调器以第四预热模式运行。
在上述方案的基础上,所述第一预设温度大于等于所述第二预设温度;在所述内盘管温度小于预设温度的情况下,当所述外盘管温度大于等于室外环境温度时,控制室外风机停止运行具体包括:在空调以第一预热模式或第四预热模式运行下,当所述外盘管温度大于等于室外环境温度时,控制室外风机停止运行;否则,控制室外风机按预设外风机转速运行。
在上述方案的基础上,预热控制方法还包括:对空调器进行故障监测,在监测到空调器存在故障时,控制空调器停止运行预热模式;或者,当空调器接收到开机指令或停止运行预热模式的指令时,停止运行预热模式;或者,当空调器以预热模式运行设定时间时,停止运行预热模式。
本发明第二方面,提供一种空调器预热控制装置,包括:预热启动模块,用于根据启动指令,控制空调器进入预热模式;预热控制模块,用于控制空调器的压缩机、膨胀阀和室外风机运行,对室内换热器进行预热;监测模块,用于实时监测室外换热器的外盘管温度、室外环境温度以及室内换热器的内 盘管温度;室外风机控制模块,用于在所述内盘管温度小于预设温度的情况下,当所述外盘管温度大于等于室外环境温度时,控制室外风机停止运行。
本发明第三方面,提供一种空调器,包括上述空调器预热控制装置;其中,所述监测模块包括在室内、室外、空调器的外盘管以及内盘管处分别设置的温度传感器。
(三)有益效果
本发明提供的一种空调器预热控制方法、装置及空调器,通过压缩机、膨胀阀和室外风机的运行,产生高温介质流过室内换热器,进而对室内换热器进行预热,使得室内换热器的内盘管在空调开机前达到一定温度,从而在空调开机时,室内风机可直接吹出热风,可提高空调器的制热速度,实现开机即可制热的效果,提升用户体验;在内盘管温度小于预设温度的情况下,在外盘管温度大于等于室外环境温度时,控制室外风机停止运行,会减少空调系统向外散热量,从而达到节能效果。
附图说明
图1为本发明实施例的空调器预热控制方法的主要流程示意图;
图2为本发明实施例的空调器预热控制方法的具体流程示意图;
图3为本发明实施例中预热模式划分区间的示意图。
具体实施方式
下面结合附图和实施例,对本发明的具体实施方式作进一步详细描述。以下实例用于说明本发明,但不用来限制本发明的范围。
在本发明的描述中,需要说明的是,除非另有明确的规定和限定,术语“安装”、“相连”、“连接”应做广义理解,例如,可以是固定连接,也可以是可拆卸连接,或一体地连接;可以是机械连接,也可以是电连接;可以是直接相连,也可以通过中间媒介间接相连,可以是两个元件内部的连通。对于本领域的普通技术人员而言,可以具体情况理解上述术语在本发明中的具体含义。
本发明实施例提供一种空调器预热控制方法,参考图1,该方法包括:步骤S100,根据启动指令,控制空调器进入预热模式;步骤S102,控制空调器的压缩机、膨胀阀和室外风机运行,对室内换热器进行预热;步骤S104,实时监测室外换热器的外盘管温度、室外环境温度以及室内换热器的内盘管 温度;步骤S106,在内盘管温度小于预设温度的情况下,当外盘管温度大于等于室外环境温度时,控制室外风机停止运行。
首先,空调器根据启动指令,在需要的时候进入预热模式。该预热模式主要是通过压缩机、膨胀阀和室外风机的运行,产生高温介质流过室内换热器,进而对室内换热器进行预热,使得室内换热器的内盘管在空调开机前达到一定温度,从而在空调开机时,室内风机可直接吹出热风,可提高空调器的制热速度,实现开机即可制热的效果,提升用户体验。
进一步地,在空调器以预热模式运行的过程中,根据内盘管温度的具体状态,以及室外换热器的外盘管温度与室外环境温度的对比,对室外风机的运行进行控制调节。在室内机的内盘管温度达到预设温度之前,在外盘管温度大于等于室外环境温度时,控制室外风机停止运行。因为此时,如果室外风机运行,外盘管处的热量则会向外界散发,导致热量损失;控制室外风机停止运行,则会减少空调系统向外散热量,从而达到节能效果。
而在内盘管温度达到预设温度之前,当外盘管温度小于室外环境温度时;或者内盘管温度大于预设温度时;控制室外风机按预设外风机转速运行。
进一步地,预热模式是在空调器进入制热模式之前进行的。在空调器以预热模式运行过程中,空调器的室内机不运行,待机指示灯始终保持关闭状态;室内风机和导风板处于停止运行状态;以避免对室内环境造成扰动,降低用户体验。四通阀保持开启状态;且为了使膨胀阀具有稳定的过热度,以使空调系统稳定运行,膨胀阀始终按照正常的调节方式进行过热度调节。
参见图2,在上述实施例的基础上,进一步地,根据启动指令,控制空调器进入预热运行模式之前还包括:步骤S200,判断空调器是否满足预热启动条件。在控制空调器进入预热模式之前,增加一个判断过程,可给用户提供更多的选择空间。
在上述实施例的基础上,进一步地,预热启动条件具体包括:空调器被允许开启预热模式;检测空调器是否被允许开启预热模式,当被允许开启预热模式时,空调器才能启动预热模式。
增加一个空调器的权限判定步骤,能够使用户根据实际需要,判断是否需要开启预热模式功能,因为预热模式是消耗电能的,部分客户为了节省部分电能,并不在乎等待开机后的预热时间,增设了权限判定步骤,使用户有更多地自主选择权利。
预热启动条件还可包括:室外环境温度低于预设室外温度,且室内环境温度低于预设室内温度;增加室外环境温度和室内环境温度的判定,使空调器更加智能。具体地,只有在室外环境温度和室内环境温度均低于一个设定的数值时,才开启预热运行模式,避免了在不会吹冷风的条件下,胡乱开启预热模式的情况。预设室外温度可以是17℃,当然还可以是其他数值,例如14℃等,相应地,室内预设温度可以是22℃,当然还可以是其他数值,例如20℃等。
预热启动条件还可包括:空调器的内外机各部件正常运行。即空调器的内机和外机均能正常启动运行以及关闭,没有异常停机问题。其中包括用于检测温度的各传感器正常运行。即在启动预热模式之前检测传感器是否出现故障,当传感器无故障时,空调器可以进入预热模式。首先检测硬件是否有故障,避免出现由于硬件故障,频繁开启或者一直开启预热运行模式的情况。
可以从这三方面中的任何一个来判断空调器是否能够进入预热模式,也可从这三方面中的两个来同时作为空调器能够进入预热模式的条件,也可将这三方面同时作为空调器能够进入预热模式的条件。
在上述实施例的基础上,进一步地,所述启动指令具体包括:立即启动预热模式;或者在预设时间启动预热模式;或者在设定的空调器开启时间前预设时间启动预热模式。基于这些启动指令,可执行步骤S202(图2)。
具体地,空调器可通过接收用户开启预热指令,控制空调器进入预热模式。与增加空调器的权项判定类似,通过用户主动开启预热指令,实现空调器的预热,能够使用户拥有更多地选择。
在另一种可能的实施方式中,还可当到达预设开启预热指令的时间时,控制空调器进入预热模式。用户还可以根据实际需要,直接设定预设开启预热指令的时间,当到达开启时间后,控制空调器开启预热模式,从而使用户拥有更多的自主控制功能,更加人性化。
用户还可设定空调器的开机时间,设置空调器在开机前的预设时间启动预热模式。
在上述实施例的基础上,进一步地,控制方法还包括步骤S204,控制空调器的压缩机、膨胀阀和室外风机运行,对室内换热器进行预热,具体包括:根据内盘管温度以及其变化趋势,对预热模式的具体运行进行控制调节。
内盘管即为空调器中室内机的蒸发器的管路。通过获取盘管温度,为选 择预热运行模式提供基础条件。其中,获取盘管温度的方式多样,例如通过盘管上的温度传感器直接获取,或者通过出风口的温度传感器间接获取,当然,为了提高获取的精度,还可以检测冷媒进出盘管时的实时压力,通过压差值间接计算出盘管温度的方式等等。
预热过程中,设计人员希望盘管温度是维持在一个稳定的温度上的,但是,实际情况是盘管温度会有波动,或为上升,或为下降,需要优先判断出盘管温度的数值大小以及变化趋势,从而为后续选择预热运行模式提供参考。判断盘管温度的方式可以是温度传感器将盘管温度发送至空调器的控制单元,空调器根据反馈的多组数据,判断盘管温度的具体数值和变化趋势,判断过程是较为常规的操作,不再进行详细展开。
当得知内盘管温度的具体数值和变化趋势,就可以根据不同的情况,预设不同的程序,从而在需要升温时快速升温,在温度过高时及时停止升温,在内盘管温度下降过程中避免其降至过低,从而降低能源浪费的同时,减小了内盘管温度的波动幅度,提升用户体验。
在上述实施例的基础上,进一步地,参考图2,根据内盘管温度以及其变化趋势,对预热模式的具体运行进行控制调节具体包括:当内盘管温度小于第一预设温度且处于上升趋势时,控制空调器以第一预热模式运行。如图3所示,此阶段为上升阶段,且盘管温度低于第一预设温度时,此时需要尽快将预热温度提升至第一预设温度以上,以确保空调器不会吹冷风,此时控制空调器开启第一预热模式,加速升温。本发明的第一预热模式的调整参数至少包括膨胀阀开度、压缩机频率和室外风机转速。
作为示例,本发明的第一预设温度可为40℃,该温度下空调器初始不会吹冷风;第一预热模式的调整参数可以是:压缩机频率为常规预热频率(例如32Hz),膨胀阀开度为常规预热开度(例如130B,B代表步数,膨胀阀通常有480B),室外风机转速为常规预热转速(例如300rpm)。
需要指出的是,上述第一预设温度、压缩机常规预热频率、膨胀阀常规预热开度以及室外风机常规预热转速并不是固定不变的,其可以根据空调机型等因素进行调整。此外,对于膨胀阀开度、压缩机频率和室外风机转速中的每个参数而言,其较大值、常规值和较小值也可以根据具体应用场景进行调整。本发明的原理在于利用相同参数在不同模式下的差异,其保护范围不应局限于每一种参数的数值大小。
当内盘管温度大于等于第一预设温度且处于上升趋势时,控制所述空调器以第二预热模式运行。如图3所示,此阶段依然为上升阶段,但是内盘管温度已经高于第一预设温度,此时已经不会吹冷风,仅仅需要维持内盘管温度在一个合理区间即可,此时控制空调器开启第二预热模式,降低升温速度,直至其不能够再继续升温。与第一预热模式类似,本发明的第二预热运行模式的调整参数至少包括膨胀阀开度、压缩机频率和室外风机转速。
作为示例,本发明的第二预热运行模式的调整参数可以是:压缩机频率为较小的预热频率(例如20Hz),膨胀阀开度为较大的预热开度(例如480B,满开度),室外风机转速为较大的预热转速(例如600rpm)。
需要指出的是,上述压缩机较小的预热频率、膨胀阀较大的预热开度以及室外风机较大的预热转速并不是固定不变的,其可以根据空调机型等因素进行调整。此外,对于膨胀阀开度、压缩机频率和室外风机转速中的每个参数而言,其较大值、常规值和较小值也可以根据具体应用场景进行调整。本发明的原理在于利用相同参数在不同模式下的差异,其保护范围不应局限于每一种参数的数值大小。
当内盘管温度大于等于第二预设温度且处于下降趋势时,控制空调器以第三预热模式运行;如图3所示,此阶段不再继续升温,变化趋势进入下降阶段,但此时由于是从最高温度作为起点的,只要其不低于第二设定温度,都不会有吹冷风的风险,此时控制空调器开启第三预热模式,只要尽量维持内盘管温度,使其下降速度减缓即可。与第一和第二预热模式类似,本发明的第三预热模式的调整参数至少包括膨胀阀开度、压缩机频率和室外风机转速。
作为示例,本发明的第二预设温度可为38℃;第三预热模式的调整参数可以是:压缩机频率为较小的预热频率(例如22Hz),膨胀阀开度为较大的预热开度(例如470B),室外风机转速为较大的预热转速(例如580rpm)。
需要指出的是,上述压缩机较小的预热频率、膨胀阀较大的预热开度以及室外风机较大的预热转速并不是固定不变的,其可以根据空调机型等因素进行调整。此外,对于膨胀阀开度、压缩机频率和室外风机转速中的每个参数而言,其较大值、常规值和较小值也可以根据具体应用场景进行调整。本发明的原理在于利用相同参数在不同模式下的差异,其保护范围不应局限于每一种参数的数值大小。
当内盘管温度小于第二预设温度且处于下降趋势时,控制空调器以第四预热模式运行。如图3所示,此阶段依然处于下降阶段,第三预热模式已经无法维持内盘管温度在第二预设温度之上,再继续降温下去,将有可能导致吹冷风的情况发生,此时控制空调器开启第四预热模式,相较于第三预热模式,使盘管产生更多的热量,来阻止其继续降温,使盘管温度重新进入升温阶段。与第一、第二和第三预热模式类似,本发明的第四预热模式的调整参数至少包括膨胀阀开度、压缩机频率和室外风机转速。
作为示例,本发明的第四预热模式的调整参数可以是:压缩机频率为常规预热频率(例如30Hz),膨胀阀开度为常规预热开度(例如133B),室外风机转速为常规预热转速(例如310rpm)。
需要指出的是,上述压缩机常规预热频率、膨胀阀常规预热开度以及室外风机常规预热转速并不是固定不变的,其可以根据空调机型等因素进行调整。此外,对于膨胀阀开度、压缩机频率和室外风机转速中的每个参数而言,其较大值、常规值和较小值也可以根据具体应用场景进行调整。本发明的原理在于利用相同参数在不同模式下的差异,其保护范围不应局限于每一种参数的数值大小。
通过上述四个阶段的划分,使空调器能够根据内盘管温度的实际温度和变化趋势,更加精准地选择预热模式,减少能源浪费的同时,降低内盘管温度的波动范围。
在上述实施例的基础上,进一步地,根据所述内盘管温度以及其变化趋势,对预热模式的具体运行进行控制调节进一步包括:第一预设温度大于等于第二预设温度。第一预设温度和第二预设温度均为空调器不会吹冷风的温度。
内盘管温度在上升阶段和下降阶段,其改变预热运行模式的设定温度可以是不同的,例如上升阶段设定的第一预设温度高于下降阶段设定的第二预设温度,以防压机频繁升降频,外风机频繁开关等,相当于做一个回差温度。
通过控制压缩机的运行频率、膨胀阀的开度以及室外风机的转速中的至少一个,使得内盘温度稳定在第一预设温度左右,不至于内盘温度过高而停机,内盘温度过低而没效果。
另外,第一预热模式和第四预热模式都是需要快速升温,第二预热运行模式和第三预热运行模式都是需要维持温度,因此,为了降低压缩机频率、 膨胀阀开度和室外风机转速的频繁改变,当然也可以使第一预热模式与第四预热模式的参数设置成相同的,并且/或者,第二预热运行模式和第三预热运行模式也可以是相同的。
进一步地,在内盘管温度小于预设温度的情况下,当外盘管温度大于等于室外环境温度时,控制室外风机停止运行具体包括:在空调以第一预热模式或第四预热模式运行下,当外盘管温度大于等于室外环境温度时,控制室外风机停止运行;否则,控制室外风机按预设外风机转速运行。
即在空调以第一预热模式或第四预热模式运行下,当外盘管温度小于室外环境温度时;或者空调以第二预热模式或第三预热模式运行时;控制室外风机按预设外风机转速运行。
在上述实施例的基础上,进一步地,预热控制方法还包括:对空调器进行故障监测,在监测到空调器存在故障时,控制空调器停止运行预热模式;或者,当空调器接收到开机指令或停止运行预热模式的指令时,停止运行预热模式;或者,当空调器以预热模式运行设定时间时,停止运行预热模式。
在监测到空调器的部件例如检测温度的传感器出现故障时,可停止运行预热模式,避免误操作。用户能够手动暂停预热模式,避免空调器出现误操作时,用户无法阻止,造成能源浪费的情况。当预热运行模式一直运行,用户一直未开启空调器时,可能是用户到达时间会很晚,此时若一直开启预热运行模式,同样会造成能源的浪费,因此,设置一个预设时间,例如30分钟,当然还可以是一个小时等时间,可以避免用户比预设时间晚开启空调器、或者用户彻夜未归而造成预热运行模式一直开启,浪费电能的情况。
特别地,膨胀阀开度、压缩机频率和室外风机风速还可以根据室外机侧环境温度来确定,能够针对室外环境做出更加合适的调整,使内盘管温度控制更准确,例如,对于第一预热模式和第二预热模式而言,当室外环境温度<-5℃时,常规预热频率可以是32Hz,常规的预热开度可以是130B,常规外风机转速可以是300rpm,较小预热频率可以是20Hz,较大的预热开度可以是470B,较大的预热外风机转速可以是550rpm;当8℃≥室外环境温度≥-5℃时,常规预热频率可以是23Hz,常规的预热开度可以是135B,常规外风机转速可以是320B,较小预热频率可以是17Hz,较大的预热开度可以是475B,较大的预热转速可以是570rpm;当室外环境温度≥8℃时,常规预热频率可以是15Hz,常规的预热开度可以是140B,常规外风机转速可以是 340B,较小预热频率可以是13Hz,较大的预热开度可以是480B,较大的预热转速可以是600rpm。室外环境的不同,所选取的参数数值可以多种多样,本发明的原理在于保护不同室外环境条件下,可以对参数进行适应性调整,其保护范围不应局限于每一种参数的数值大小。
另外,在预热模式更改时,膨胀阀开度、压缩机频率和室外风机风速可以是同时向目标值调整,以使调整速度更快。另外,划分预热控制区间显然也可以不止本发明所列举的四种,还可以是六种、八种等,通过多增加与第一预设温度、第二预设温度相似的预设值,即可将上升阶段和下降阶段切分成更多地区间,实现更加精密的控制。
在上述实施例的基础上,进一步地,一种空调器预热控制装置,采用上述实施例中所述的空调器预热控制方法,包括:预热启动模块,用于根据启动指令,控制空调器进入预热模式;预热控制模块,用于控制空调器的压缩机、膨胀阀和室外风机运行,对室内换热器进行预热;监测模块,用于实时监测室外换热器的外盘管温度、室外环境温度以及室内换热器的内盘管温度;室外风机控制模块,用于在内盘管温度小于预设温度的情况下,当所述外盘管温度大于等于室外环境温度时,控制室外风机停止运行。
进一步地,一种空调器预热控制装置还包括:判断模块,用于在根据启动指令,控制空调器进入预热运行模式之前判断空调器是否满足预热启动条件。监测模块还可用于实时监测室内换热器的内盘管温度以及室内温度。预热控制模块具体包括第一预热控制模块、第二预热控制模块、第三预热控制模块和第四预热控制模块。
在上述实施例的基础上,进一步地,一种空调器,包括上述实施例所述的空调器预热控制装置;其中,监测模块包括在室内、室外、空调器的外盘管以及内盘管处分别设置的温度传感器。
在上述实施例的基础上,进一步地,本实施例提供一种空调器预热控制方法,基于完整空调器冷媒系统以及温度传感器等。该预热控制方法在用户制热开机前,提前运行冷媒系统进行内盘升温;该控制方法,不限于相关温度、阀开度、风机转速、部件动作的参数选取及设置;预热模式区间划分相关参数设定包含且不限于以上参数设定,预热模式区间划分不限于以上四个区间,可通过增加温度点设定其他蓄热频率、阀开度、转速。该预热控制方法适用范围不限于常见柜机、挂机、多联机、热风机等空调设施。旨在加快 制热吹风时间;提高首次出热风温度。
该预热控制方法具体为:在室内外温度达到预热需求时,用户未打开机制热时,提前一段时间(例如20-30min,或者更长时间)开启压机进行低频(例如30Hz甚至更低)冷媒系统蓄热(参考制热冷媒系统各部件动作,但预热过程开始到用户开机前,室内机导板无动作、面板无显示、室内风机无动作,仅室外机压缩机、室外风机、膨胀阀、四通阀进行必要动作)。空调系统完整(室内机、室外机完整,且能正常制冷制热),且处于通电关机状态。
预热进入条件包括必要条件:用户允许开启制热前蓄热功能;室外机侧空间环境温度低于一定温度(例如≤17℃),且室内机侧环境温度低于一定温度(例如≤20℃);内外机无故障。
预热模式启动方式:用户手动开启预热键(包括遥控器开启、手机APP开启);用户设定定时开启(如10:00am-11:00am开启预热功能);用户设定开机时间点前30min(可设定)开启(例如用户设定11:00am开机,预热程序将在10:30am启动进行蓄热,蓄热30min(可设定)准时关闭,或者用户开机后,直接蓄热转制热开机)。
空调制热开机前,为提高室内换热器内盘温度T p进行预热功能时,室外换热器盘管温度T e与室外环温T ao变化情况具体为:首先T e-T ao≤0℃,一定时间t 1后T e-T ao>0℃。如T e-T ao>0℃时,室外风机开,则会向外散热,浪费能量。因此,当内盘温度T p在达到设定值之前,如T e-T ao>0℃时,如室外风机停转则会减少系统向外散热量,从而达到节能效果,减少蓄热时向外散热量,节能,加快蓄热时内盘达温时间。
空调器在运行第一或者第四预热模式时,如室外盘管温度≥室外环温,则室外风机停转(0rpm);如室外盘管温度<室外环温,则室外风机按设定风速运行。
预热模式退出条件:内外机故障检测,存在故障;用户开机进入其他功能;用户无其他操作,达到累计运行时间(例如30min,可设定);用户手动关闭制热前蓄热功能;用户拒绝开启制热前蓄热功能。
预热转制热及其他功能时:退出预热,压缩机、电子膨胀阀、四通阀直接向目标动作变化,阀开度开大关小尽可能快。
综上所述,本发明能够根据外环温的不同,内盘管温度的不同,以及内 盘管温度变化趋势的不同,匹配不同的预热运行模式,进行更加合理的参数制定,从而能够更精准地控制盘管温度,以确保在不反复启停压缩机的情况下,使内盘管温度更加稳定、温度跳跃的范围更小,从而减少能源浪费,也不会出现吹风温度不稳定的情况。使用四个预热模式,能够细分区间,在不浪费能源的前提下,更精准控制盘管温度。同时用户拥有更多的控制选择,也能够避免部分特殊情况造成能源的浪费。同样地,能解决部分特殊情况下的能源的浪费。
以上所述仅为本发明的较佳实施例而已,并不用以限制本发明,凡在本发明的精神和原则之内,所作的任何修改、等同替换、改进等,均应包含在本发明的保护范围之内。

Claims (10)

  1. 一种空调器预热控制方法,包括:
    根据启动指令,控制空调器进入预热模式;
    控制空调器的压缩机、膨胀阀和室外风机运行,对室内换热器进行预热;
    实时监测室外换热器的外盘管温度、室外环境温度以及室内换热器的内盘管温度;
    在所述内盘管温度小于预设温度的情况下,当所述外盘管温度大于等于室外环境温度时,控制室外风机停止运行。
  2. 根据权利要求1所述的空调器预热控制方法,其中,根据启动指令,控制空调器进入预热运行模式之前还包括:
    判断空调器是否满足预热启动条件。
  3. 根据权利要求2所述的空调器预热控制方法,其中,所述预热启动条件具体包括:
    空调器被允许开启预热模式;
    室外环境温度低于预设室外温度,且室内环境温度低于预设室内温度;
    以及空调器的内外机各部件正常运行中的至少一个。
  4. 根据权利要求1所述的空调器预热控制方法,其中,所述启动指令具体包括:
    立即启动预热模式;
    或者在预设时间启动预热模式;
    或者在设定的空调器开启时间前预设时间启动预热模式。
  5. 根据权利要求1至4任一所述的空调器预热控制方法,其中,控制空调器的压缩机、膨胀阀和室外风机运行,对室内换热器进行预热具体包括:
    根据所述内盘管温度以及其变化趋势,对预热模式的具体运行进行控制调节。
  6. 根据权利要求5所述的空调器预热控制方法,其中,根据所述内盘管温度以及其变化趋势,对预热模式的具体运行进行控制调节具体包括:
    当所述内盘管温度小于第一预设温度且处于上升趋势时,控制所述空调器以第一预热模式运行;
    当所述内盘管温度大于等于第一预设温度且处于上升趋势时,控制所述空调器以第二预热模式运行;
    当所述内盘管温度大于等于第二预设温度且处于下降趋势时,控制所述空调器以第三预热模式运行;
    当所述内盘管温度小于第二预设温度且处于下降趋势时,控制所述空调器以第四预热模式运行。
  7. 根据权利要求6所述的空调器预热控制方法,其中,所述第一预设温度大于等于所述第二预设温度;
    在所述内盘管温度小于预设温度的情况下,当所述外盘管温度大于等于室外环境温度时,控制室外风机停止运行具体包括:在空调以第一预热模式或第四预热模式运行下,当所述外盘管温度大于等于室外环境温度时,控制室外风机停止运行;否则,控制室外风机按预设外风机转速运行。
  8. 根据权利要求1所述的空调器预热控制方法,其中,预热控制方法还包括:
    对空调器进行故障监测,在监测到空调器存在故障时,控制空调器停止运行预热模式;
    或者,当空调器接收到开机指令或停止运行预热模式的指令时,停止运行预热模式;
    或者,当空调器以预热模式运行设定时间时,停止运行预热模式。
  9. 一种空调器预热控制装置,包括:
    预热启动模块,用于根据启动指令,控制空调器进入预热模式;
    预热控制模块,用于控制空调器的压缩机、膨胀阀和室外风机运行,对室内换热器进行预热;
    监测模块,用于实时监测室外换热器的外盘管温度、室外环境温度以及室内换热器的内盘管温度;
    室外风机控制模块,用于在所述内盘管温度小于预设温度的情况下,当所述外盘管温度大于等于室外环境温度时,控制室外风机停止运行。
  10. 一种空调器,包括上述权利要求9所述的空调器预热控制装置;其中,所述监测模块包括在室内、室外、空调器的外盘管以及内盘管处分别设置的温度传感器。
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