WO2021004453A1 - 空调器及其控制方法 - Google Patents

空调器及其控制方法 Download PDF

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Publication number
WO2021004453A1
WO2021004453A1 PCT/CN2020/100656 CN2020100656W WO2021004453A1 WO 2021004453 A1 WO2021004453 A1 WO 2021004453A1 CN 2020100656 W CN2020100656 W CN 2020100656W WO 2021004453 A1 WO2021004453 A1 WO 2021004453A1
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Prior art keywords
air conditioner
temperature
frequency
control method
compressor
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PCT/CN2020/100656
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English (en)
French (fr)
Inventor
唐波
曾福祥
董志钢
刘翔
贾淑玲
刘光朋
赵烈辉
牛兴艳
李柯飞
Original Assignee
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 WO2021004453A1 publication Critical patent/WO2021004453A1/zh

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
    • F24F11/63—Electronic processing
    • F24F11/64—Electronic processing using pre-stored data
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
    • F24F11/63—Electronic processing
    • F24F11/65—Electronic processing for selecting an operating mode
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/70—Control systems characterised by their outputs; Constructional details thereof
    • F24F11/72—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
    • 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
    • F24F11/79—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling the direction of the supplied air
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/70—Control systems characterised by their outputs; Constructional details thereof
    • F24F11/80—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air
    • F24F11/86—Control systems characterised by their outputs; Constructional details thereof for controlling the temperature of the supplied air by controlling compressors within refrigeration or heat pump circuits
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2110/00—Control inputs relating to air properties
    • F24F2110/10—Temperature
    • F24F2110/12—Temperature of the outside air
    • 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

Definitions

  • the invention relates to the technical field of air conditioning, in particular to an air conditioner and a control method thereof.
  • Air conditioners have become an indispensable household appliance in contemporary life. During the cooling process of air conditioners, when the relative humidity of the air is relatively high, the location of the air outlet is likely to produce condensation droplets due to the intersection of cold and hot air. After the condensation water drops are generated, it is easy to drip on the air outlet, wind deflector and other parts or blow out with the wind, thereby affecting the user experience.
  • the method of sweeping or reducing the operating frequency of the air conditioner compressor is generally used to solve this problem.
  • sweeping often cannot completely solve the condensation problem.
  • the existing frequency reduction method is to directly compress The machine frequency is reduced to the set value. In this way, although the anti-condensation effect is guaranteed, the cooling capacity of the air conditioner will correspondingly drop, sacrificing user comfort, and affecting user experience.
  • the present invention provides a control method of an air conditioner, which includes an indoor unit.
  • the control method includes: in the case that the air conditioner executes an anti-condensation mode, acquiring the outdoor ambient temperature where the outdoor unit is located, the wind speed of the indoor unit, and the compressor of the outdoor unit The current control frequency of the compressor; the current control frequency of the compressor is adjusted according to the outdoor ambient temperature and the air outlet speed to obtain the operating frequency of the compressor in the anti-condensation mode.
  • the current control frequency of the compressor is adjusted according to the outdoor ambient temperature and the air outlet speed to obtain the compressor's current control frequency in the anti-condensation mode.
  • “Operating frequency” specifically includes: determining the frequency limit weight according to the outdoor ambient temperature and the air outlet speed; adjusting the current control frequency of the compressor according to the frequency limit weight to obtain the anti-condensation mode The operating frequency of the compressor.
  • the outdoor ambient temperature is pre-divided into a plurality of temperature intervals
  • the air outlet speed is pre-divided into a plurality of wind speed gears
  • the frequency limit weight is preset with a plurality of weight values
  • Each of the weight values corresponds to a single temperature range and a single wind speed gear position
  • “determining the frequency limit weight according to the outdoor ambient temperature and the wind speed” specifically includes: according to the temperature range in which the outdoor ambient temperature falls and all The wind speed gear into which the output wind speed falls determines the corresponding weight value.
  • the outdoor environment temperature is pre-divided into a first temperature interval and a second temperature interval, and the first temperature interval is an interval in which the outdoor environment temperature is greater than a temperature threshold; the second The temperature interval is the interval in which the outdoor ambient temperature is less than or equal to the temperature threshold; wherein, in the case of the same wind speed gear, the frequency limit weight corresponding to the first temperature interval is less than that corresponding to the second temperature interval Frequency limit weight.
  • the temperature threshold is a temperature division point of the current control frequency of the compressor in the middle and low wind speed gears.
  • the air outlet speed is pre-divided into the first gear, the second gear and the third gear in which the wind speed decreases sequentially, wherein, in the case of the same temperature range, corresponding to all The frequency limit weights of the first gear, the second gear, and the third gear are sequentially reduced.
  • the control method includes: when the air conditioner satisfies a set condition, causing the air conditioner to perform an anti-condensation mode; wherein the set condition includes: The air conditioner is not in a strong mode or a silent mode, and the air guide component of the indoor unit is at an extreme angle.
  • the setting condition includes: the relative humidity of the indoor environment where the indoor unit is located is not less than a preset humidity threshold.
  • the preset humidity threshold has a value range of 75% to 85%.
  • the control method of the air conditioner of the present invention takes the setting condition as the judgment condition of the condensation risk, and judges whether the air conditioner currently has the condensation risk by judging whether the air conditioner satisfies the setting condition, thereby effectively improving the anti-condensation control performance Reliability and accuracy.
  • the air conditioner is made to execute the anti-condensation mode to effectively avoid the occurrence of condensation.
  • the control method of the present invention uses the currently acquired outdoor ambient temperature and the air outlet speed as a frequency limiting element to limit the current control frequency of the compressor to obtain the compressor in the anti-condensation mode. Operating frequency.
  • the current control frequency of the compressor is the compressor frequency calculated by the control unit of the air conditioner according to multiple parameters of the current operating state of the air conditioner (such as fixed parameters of the equipment, current operating parameters, etc.), the operating state of the air conditioner is different, The current control frequency of the compressor will also be different. Therefore, the operating frequency of the compressor in the anti-condensation mode of the air conditioner obtained by the above-mentioned frequency limiting method is not a single fixed value, but a dynamic frequency value corresponding to the current operating state.
  • the dynamic frequency value can take into account the anti-condensation effect and the cooling effect.
  • control method of the present invention adopts the above-mentioned dynamic frequency limiting method, which can solve the condensation problem while ensuring refrigeration. Effect, thereby improving the user experience.
  • the present invention also provides an air conditioner, the air conditioner includes a controller, and the controller is configured to execute the above-mentioned control method of the air conditioner.
  • the air conditioner of the present invention has all the technical effects of the aforementioned control method, and will not be repeated here.
  • Fig. 1 is a schematic flow chart of the control method of the air conditioner of the present invention
  • Fig. 2 is a schematic flowchart of step S30 in an embodiment of the present invention.
  • the terms “installed”, “connected”, and “connected” should be understood in a broad sense, for example, it may be a fixed connection or It is a detachable connection or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal communication between two components.
  • installed e.g., it may be a fixed connection or It is a detachable connection or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal communication between two components.
  • FIG. 1 is a schematic flowchart of the control method of the air conditioner of the present invention.
  • the air conditioner of the present invention includes an indoor unit and an outdoor unit.
  • the control method of the present invention mainly includes:
  • Step S10 When the air conditioner satisfies the set condition, the air conditioner is executed in the anti-condensation mode.
  • the setting condition is the judgment condition of whether the air conditioner has the risk of condensation. When the air conditioner meets the set conditions, it is judged that the air conditioner has the risk of condensation. At this time, the air conditioner needs to implement the anti-condensation mode to avoid condensation. The production of dew.
  • Step S20 Under the condition that the air conditioner executes the anti-condensation mode, obtain the outdoor ambient temperature where the outdoor unit is located, the air outlet speed of the indoor unit, and the current control frequency of the compressor.
  • the current control frequency of the compressor can be interpreted as: the compressor frequency calculated by the control unit of the air conditioner according to multiple parameters of the air conditioner (such as fixed parameters of the device, current operating parameters, etc.). In different operating conditions, the parameters of the air conditioner are different, and the current control frequency of the compressor calculated by the control unit of the air conditioner will also be different. Without any frequency limiting conditions, the operating frequency of the compressor is the current compressor Control frequency.
  • Step S30 Adjust the current control frequency of the compressor according to the outdoor ambient temperature and the air outlet speed to obtain the operating frequency of the compressor in the anti-condensation mode.
  • the advantage of the above arrangement is that the control method of the present invention accurately judges whether the air conditioner currently has a condensation risk by determining whether the air conditioner meets the set conditions, and improves the reliability and accuracy of the anti-condensation control.
  • the air conditioner satisfies the set condition, that is, the air conditioner currently has a condensation risk
  • the air conditioner is made to execute the anti-condensation mode to eliminate the condensation risk.
  • the control method of the present invention uses the currently acquired outdoor ambient temperature and the wind speed as a frequency limiting factor to adjust the current control frequency of the compressor to obtain the compressor operation in the anti-condensation mode frequency.
  • the current control frequency of the compressor is the compressor frequency calculated by the control unit of the air conditioner according to the current operating state of the air conditioner, the current control frequency of the compressor will be different depending on the operating state of the air conditioner. Therefore, through the above frequency limit
  • the operating frequency of the compressor in the anti-condensation mode of the air conditioner obtained in this way is not a single fixed value, but a dynamic frequency value corresponding to the current operating state.
  • the air conditioner It can not only ensure the cooling effect, but also make the air outlet temperature of the air outlet greater than the dew point temperature of the air in the current indoor environment, thereby eliminating the possibility of condensation on the air deflector.
  • control method of the present invention adopts the above-mentioned dynamic frequency limiting method, which can solve the condensation problem while ensuring refrigeration. Effect, thereby improving the user experience.
  • the setting conditions include:
  • the air conditioner needs to meet the following conditions at the same time:
  • the air conditioner is not in power mode or silent mode.
  • condition 1 existing air conditioners are usually set with multiple operating modes, including standard modes, such as ordinary heating/heating mode, air supply mode, etc., as well as special modes that respond to customer special needs.
  • Common special modes include powerful mode or silent mode. Among them, take the powerful mode as an example.
  • the output power of the powerful mode is greater than the output power of the standard mode.
  • the output power represents the cooling and heating capacity of the air conditioner or the cooling and heating capacity per unit time.
  • the air conditioner can quickly achieve cooling or heating. heat.
  • the strong mode for cooling the user’s primary purpose is to quickly reduce the indoor temperature. At this time, if the air conditioner enters the anti-condensation mode, the cooling capacity of the air conditioner will be reduced. This will violate the user’s selection of the strong mode The original intention, thus affecting the user experience.
  • the strong mode or silent mode corresponds to the special needs of users, there is no need to consider the condensation problem in the strong mode or silent mode.
  • the air guide assembly of the existing indoor unit generally includes a horizontal guide plate and left/right swing blades.
  • the wind guide assembly at an extreme angle can be understood as :
  • the left/right swing blade of the indoor unit is at the maximum angle of swinging left/right
  • the horizontal guide plate is at the maximum angle of swinging upward or downward. It should be noted here that for an indoor unit with horizontal guides and left/right swing blades, as long as one of the left/right swing blades or the horizontal guide is at an extreme angle, it can be deemed to meet condition 2).
  • the air conditioner of the present invention can be a conventional air conditioner model, such as a wall-mounted air conditioner, or other special models. Due to the different models of air conditioners, the air supply structure will be different.
  • the definition of the above limit angle is for most conventional models, but in a broad sense, the air conditioner of the present invention at the limit angle should be understood as:
  • the wind deflector is at the angle with the greatest resistance to wind flow.
  • the air conditioner will correspondingly reduce the air output and increase the compressor frequency
  • the present invention is mainly aimed at solving the condensation problem of the air deflector in the air-conditioning refrigeration mode that is maintained at an extreme angle for a long time.
  • the setting conditions are:
  • the air conditioner satisfies the above conditions 1) and 2), it also needs to meet the condition 3), where the condition 3) is: the indoor relative humidity is higher than the preset humidity threshold.
  • the limit relative humidity of condensation risk is generally concentrated in the range of 75% to 85%, that is to say, when the indoor relative humidity is higher than the limit humidity.
  • the air guide components of the indoor unit of the air conditioner are prone to condensation.
  • the value range of the preset humidity threshold is 75% to 85%.
  • step S30 specifically includes:
  • Step S310 Determine the frequency limit weight according to the outdoor ambient temperature and the wind speed.
  • Step S320 Adjust the current control frequency of the compressor according to the frequency limit weight to obtain the operating frequency of the compressor in the anti-condensation mode.
  • the frequency limit weight is preset with multiple weight values.
  • the weight value corresponds to a single temperature interval and a single wind speed gear respectively. After obtaining the outdoor ambient temperature and the wind speed, the corresponding weight value is determined according to the temperature range into which the outdoor ambient temperature falls and the wind speed gear into which the wind speed falls.
  • the outdoor environment temperature is pre-divided into a first temperature interval and a second temperature interval, where the first temperature interval is an interval where the outdoor environment temperature is greater than a temperature threshold; the second temperature interval is an outdoor environment temperature less than or equal to The temperature threshold interval.
  • the temperature threshold is the temperature division point of the current control frequency of the compressor in the middle and low wind speed gears.
  • a temperature division point is pre-stored in the control program of the existing air conditioner. In the case of control frequency, the middle and low wind speed gears have different current control frequencies when they are higher or lower than the temperature cut-off point.
  • the temperature division point of the current control frequency of the original compressor in the middle and low wind speed gears prestored in the control unit of the air conditioner can be directly called as the temperature threshold of the present invention.
  • the pre-stored temperature segmentation point is usually 29°C.
  • the temperature threshold can be set to 29°C.
  • the wind speed is pre-divided into the first gear, the second gear and the third gear in which the wind speed decreases in sequence.
  • the first gear is the high wind gear
  • the first gear is the middle wind gear
  • the third gear is For low wind gear. According to the above settings, Table 1 below is formed.
  • the frequency limit can be determined according to the mapping relationship between the outdoor ambient temperature and the wind gear in Table 1 above.
  • the weight is 0.95. Then the control frequency of the compressor calculated from the control system is multiplied by the frequency limit weight to obtain the operating frequency of the compressor in the anti-condensation mode.
  • the setting rule of the frequency limit weight is that the higher the wind speed, the greater the frequency limit weight. It can be seen from Table 1 that under the same temperature range, it is different from the high wind gear, the middle wind gear, and the low wind gear. The value of the corresponding frequency limit weight decreases sequentially. The higher the outdoor ambient temperature is, the higher the current control frequency of the compressor calculated by the control unit will be, and the risk of condensation will also increase at this time.
  • the higher the outdoor ambient temperature the higher the control frequency of the compressor.
  • the frequency intensity also needs to be increased. Therefore, when the wind speed gear is the same, the value of the frequency limit weight corresponding to the first temperature interval is smaller than the value of the frequency limit weight corresponding to the second temperature interval.
  • the present invention comprehensively considers the influence of the outdoor environment temperature and the air outlet speed of the indoor unit on the condensation phenomenon of the air guide assembly, and both are taken as consideration factors to determine the frequency limit Then, according to the frequency limit weight, the current control frequency of the compressor is reduced to obtain the operating frequency in the anti-condensation mode, so as to ensure the cooling effect and reduce the risk of condensation.
  • the division interval of the outdoor ambient temperature and the air outlet speed is not limited to the above examples, and those skilled in the art can reasonably set the mapping relationship between the outdoor ambient temperature, the air outlet temperature and the frequency limit weight according to actual application scenarios.
  • the manner of adjusting the current control frequency of the compressor based on the outdoor ambient temperature and the air outlet speed is not limited to the above examples. Those skilled in the art can reasonably set the manner of adjusting the current control frequency of the compressor according to actual needs.
  • the air conditioner obviously also includes other parts and structures. Although not described in this embodiment, these parts and components should be in accordance with the prior art.
  • the shapes and features of the air conditioner should be understood, and these shapes and features should not be regarded as limiting the present invention.
  • the outdoor unit of an air conditioner also includes an evaporator, a condenser, and the like.

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Abstract

一种空调器的控制方法和空调器，空调器包括室内机和室外机，控制方法包括：在空调器执行防凝露模式的情形下，获取室外机所处的室外环境温度、室内机的出风速度以及室外机的压缩机的当前控制频率；根据室外环境温度和出风速度对压缩机的当前控制频率进行调整，以得到防凝露模式下的压缩机的运行频率。相较于现有的防凝露模式采用的直接限频方式，本发明采用动态限频的方式来兼顾凝露改善效果以及制冷效果。

Description

空调器及其控制方法 技术领域
本发明涉及空气调节技术领域，具体涉及一种空调器及其控制方法。
背景技术
空调已成为当代生活必不可少的生活电器，空调在制冷过程中，在空气相对湿度较大的情形下，出风口位置由于冷风和热风交汇而容易产生凝露水珠。凝露水珠产生后易在出风口、导风板等部位滴落或者随风吹出，从而影响用户体验。
现有技术中一般采用扫风或者降低空调器压缩机的运行频率的方法解决此问题，但是扫风往往不能彻底解决凝露问题，降低频率虽然可行，但现有的降频方式是直接将压缩机频率降低到设定值，这样一来，虽然保证了防凝露效果，但是相应地会导致空调器制冷能力骤降，牺牲了用户舒适性，对用户体验造成影响。
因此，本领域需要一种既能解决凝露问题又能同时保证制冷效果的防凝露控制方法来解决上述问题。
发明内容
为了解决现有技术中的上述问题，即现有的防凝露控制方法无法兼顾防凝露效果和制冷效果的问题，本发明提供了一种空调器的控制方法，所述空调器包括室内机和室外机，所述控制方法包括：在空调器执行防凝露模式的情形下，获取所述室外机所处的室外环境温度、所述室内机的出风速度以及所述室外机的压缩机的当前控制频率；根据所述室外环境温度和所述出风速度对所述压缩机的当前控制频率进行调整，以得到所述防凝露模式下的所述压缩机的运行频率。
在上述控制方法的优选技术方案中，“根据所述室外环境温度和所述出风速度对所述压缩机的当前控制频率进行调整，以得到所述防凝露模式下的所述压缩机的运行频率”具体包括：根据所述室外环境温度和所述出风速度确定限频权重；根据所述限频权重对所述压缩机的当前控制频率进行调整，以得到所述防凝露模式下的压缩机的运行频率。
在上述控制方法的优选技术方案中，所述室外环境温度预分为多个温度 区间，所述出风速度预分为多个风速档位，所述限频权重预设有多个权重值，每个所述权重值分别与单个温度区间和单个风速档位对应；“根据所述室外环境温度和所述出风速度确定限频权重”具体包括：根据室外环境温度落入的温度区间以及所述出风速度落入的风速档位确定对应的权重值。
在上述控制方法的优选技术方案中，所述室外环境温度预分为第一温度区间和第二温度区间，所述第一温度区间为所述室外环境温度大于温度阈值的区间；所述第二温度区间为所述室外环境温度小于等于所述温度阈值的区间；其中，在风速档位相同的情形下，与所述第一温度区间对应的限频权重小于与所述第二温度区间对应的限频权重。
在上述控制方法的优选技术方案中，所述温度阈值为中、低风速档位的压缩机的当前控制频率的温度分割点。
在上述控制方法的优选技术方案中，所述出风速度预分为风速依次降低的第一档位、第二档位和第三档位，其中，在温度区间相同的情形下，对应于所述第一档位、所述第二档位和所述第三档位的所述限频权重依次减小。
在上述控制方法的优选技术方案中，所述控制方法包括：在所述空调器满足设定条件的情形下，使所述空调器执行防凝露模式；其中，所述设定条件包括：所述空调器不处于强力模式或静音模式，并且所述室内机的导风组件处于极端角度。
在上述控制方法的优选技术方案中，所述设定条件包括：所述室内机所处的室内环境的相对湿度不小于预设湿度阈值。
在上述控制方法的优选技术方案中，所述预设湿度阈值的取值范围为75％至85％。
本发明的空调器的控制方法将设定条件作为凝露风险的判定条件，通过判断空调器是否满足设定条件以判断空调器是否当前是否存在凝露风险，从而可以有效提高防凝露控制的可靠性和准确性。在判断出空调器具有凝露风险的情形下，使空调器执行防凝露模式以有效避免凝露的产生。在防凝露模式下，本发明的控制方法将当前获取的室外环境温度和出风速度综合作为限频要素来对压缩机的当前控制频率进行限频以得到防凝露模式下的压缩机的运行频率。由于压缩机的当前控制频率是空调器的控制单元根据空调器的当前运行状态的多个参数(如设备的固定参数、当前运行参数等)计算出的压缩机频率，空调器的运行状态不同，压缩机的当前控制频率也会不同，因 此，通过上述限频方式得到的空调器的防凝露模式的压缩机的运行频率不是单一的固定值，而是对应当前运行状态的动态频率值，该动态频率值能够兼顾防凝露效果和制冷效果。可以看出，相较于现有技术中直接将压缩机频率降低到单一设定值的方式，本发明的控制方法采用上述动态限频的方式，在解决凝露问题的同时，还能够保证制冷效果，从而提高了用户体验。
另一方面，本发明还提供了一种空调器，所述空调器包括控制器，所述控制器用于执行上述空调器的控制方法。本发明的空调器具有前述的控制方法的所有技术效果，在此不再赘述。
附图说明
下面参照附图来描述本发明的空调器及其控制方法。附图中：
图1为本发明的空调器的控制方法的流程示意图；
图2为本发明的一种实施例中步骤S30的流程示意图。
具体实施方式
下面参照附图来描述本发明的优选实施方式。本领域技术人员应当理解的是，这些实施方式仅仅用于解释本发明的技术原理，并非旨在限制本发明的保护范围。例如，尽管本申请中按照特定顺序描述了本发明的方法的各个步骤，但是这些顺序并不是限制性的，在不偏离本发明的基本原理的前提下，本领域技术人员可以按照不同的顺序来执行所述步骤。
需要说明的是，在本发明的描述中，术语“中心”、“上”、“下”、“左”、“右”、“竖直”、“水平”、“内”、“外”等指示的方向或位置关系的术语是基于附图所示的方向或位置关系，这仅仅是为了便于描述，而不是指示或暗示所述装置或元件必须具有特定的方位、以特定的方位构造和操作，因此不能理解为对本发明的限制。此外，术语“第一”、“第二”仅用于描述目的，而不能理解为指示或暗示相对重要性。
此外，还需要说明的是，在本发明的描述中，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。对于本领域技术人员而言，可根据具体情况理解上述术语在本发明中的具体含义。
首先参照图1，图1为本发明的空调器的控制方法的流程示意图。本发明的空调器包括室内机和室外机，如图1所示，本发明的控制方法主要包括：
步骤S10：在空调器满足设定条件的情形下，使空调器执行防凝露模式。
设定条件是空调器是否具有凝露风险的判定条件，在空调器满足设定条件的情形下，判定空调器具有凝露风险，此时需要相应地使空调器执行防凝露模式以避免凝露的产生。
步骤S20：在空调器执行防凝露模式的情形下，获取室外机所处的室外环境温度、室内机的出风速度以及压缩机的当前控制频率。
需要说明的是，压缩机的当前控制频率可以解释为：空调器的控制单元根据空调器的多个参数(如设备的固定参数、当前运行参数等)计算出的压缩机频率。在不同运行状态下，空调器的参数不同，空调器的控制单元计算出的压缩机的当前控制频率也会不同，在无任何限频条件的情形下，压缩机的运行频率为压缩机的当前控制频率。
步骤S30：根据室外环境温度和出风速度对压缩机的当前控制频率进行调整以得到防凝露模式下的压缩机的运行频率。
上述设置的优点在于：本发明的控制方法通过判定空调器是否满足设定条件以精确地判断空调器当前是否具有凝露风险，提高了防凝露控制的可靠性和准确性。在空调器满足设定条件，即空调器当前具有凝露风险的情形下，使空调器执行防凝露模式以消除凝露风险。在防凝露模式下，本发明的控制方法将当前获取的室外环境温度和出风速度综合作为限频要素来对压缩机的当前控制频率进行调整以得到防凝露模式下的压缩机的运行频率。由于压缩机的当前控制频率是空调器的控制单元根据空调器的当前运行状态计算出的压缩机频率，空调器的运行状态不同，压缩机的当前控制频率也会不同，因此，通过上述限频方式得到的空调器的防凝露模式的压缩机的运行频率不是单一的固定值，而是对应当前运行状态的动态频率值，在空调器的压缩机运行以该动态频率值运行时，空调器既能保证制冷效果，还能够使出风口的出风温度大于当前室内环境下的空气的露点温度，从而杜绝了导风板产生凝露的可能性。可以看出，相较于现有技术中直接将压缩机频率降低到单一设定值的方式，本发明的控制方法采用上述动态限频的方式，在解决凝露问题的同时，还能够保证制冷效果，从而提高了用户体验。
在一种优选的实施方式中，设定条件包括：
空调器需要同时满足以下条件：
1)空调器不处于强力模式或静音模式。
2)室内机的导风组件处于极端角度。
关于条件1)，现有的空调器通常会设置有多种运行模式，其中既包括标准模式，如普通制热/制热模式、送风模式等，也包括响应客户特殊需求的特殊模式。常见的特殊模式包括强力模式或静音模式。其中，以强力模式为例，强力模式的输出功率大于标准模式的输出功率，输出功率表征空调的制冷制热能力或单位时间内的制冷制热量，在强力模式下，空调能够快速实现制冷或制热。当用户选择强力模式来制冷时，用户的首要目的在于快速降低室内温度，此时若使空调器进入防凝露模式，会使空调器的制冷能力降低，这样一来，会违背用户选择强力模式的初衷，从而影响用户体验。鉴于此，由于强力模式或静音模式对应的是用户的特殊需求，因此在强力模式或静音模式下，无需考虑凝露问题。
关于条件2)，现有的室内机的导风组件一般包括水平导板和左/右摆叶，以具有水平导板和左/右摆叶的室内机为例，导风组件处于极端角度可以理解为：室内机的左/右摆叶处于向左/右摆动的最大角度，水平导板处于向上摆动或向下摆动的最大角度。这里需要说明的是，对于具有水平导板和左/右摆叶的室内机而言，只要左/右摆叶或水平导板中一个处于极端角度，即可视为满足条件2)。
还需要说明的是，本发明的空调器可以为常规空调器机型，如壁挂式空调器，也可以是其他特殊机型。由于空调器的机型不同，送风结构也会有所区别，上述极限角度的定义是针对大多数常规机型而言，但是就广义的理解，本发明的空调器处于极限角度应当理解为：导风板处于对风流阻力最大的角度。
在导风组件处于极端角度的情形下，由于此时导风板对出风的阻力最大，按照现有的空调器的调节机制，空调器会相应地减小出风风量且增大压缩机频率以降低出风温度，而出风温度过低会存在较大的凝露风险，因此本发明主要是针对解决空调制冷模式导风板长时间维持极端角度下的凝露问题。
进一步地，针对设置有湿度传感器的空调器，设定条件为:
空调器在满足上述条件1)和2)的同时，还需要满足条件3)，其中条 件3)为：室内相对湿度高于预设湿度阈值。经过发明人长时间的研究实验发现，针对不同机型，凝露风险的极限相对湿度一般集中在75％至85％的范围内，也就是说，在室内相对湿度高于该极限湿度的情形下，空调器室内机的导风组件极易产生凝露。鉴于此，优选地，预设湿度阈值的取值范围为75％至85％。
接下来参照图2，图2为本发明的一种实施例中步骤S30的流程示意图。如图2所示，在一种优选的实施方式中，步骤S30具体包括：
步骤S310：根据室外环境温度和出风速度确定限频权重。
步骤S320：根据限频权重对压缩机的当前控制频率进行调整以得到防凝露模式下的压缩机的运行频率。
限频权重的确定方式可以有多种，优选地，室外环境温度预分为多个温度区间，出风速度预分为多个风速档位，限频权重预设有多个权重值，每个权重值分别与单个温度区间和单个风速档位对应。在获取室外环境温度和出风速度之后，根据室外环境温度落入的温度区间以及风速落入的风速档位确定对应的权重值。
如作为一种具体的示例，室外环境温度预分为第一温度区间和第二温度区间，其中，第一温度区间为室外环境温度大于温度阈值的区间；第二温度区间为室外环境温度小于等于温度阈值的区间。优选地，温度阈值为中、低风速档位的压缩机的当前控制频率的温度分割点，具体地，现有的空调器的控制程序中都会预存有一个温度分割点，在计算压缩机的当前控制频率的情形下，中、低风速档位在高于温度分割点或低于温度分割点的情形下都对应有不同的当前控制频率。由此，可以直接调用空调器的控制单元中预存的中、低风速档位原有压缩机的当前控制频率的温度分割点的取值作为本发明的温度阈值。如对于大多数机型而言，其预存的温度分割点通常为29℃，鉴于此，可以将温度阈值设置成29℃。出风速度预分为风速依次降低的第一档位、第二档位和第三档位，其中，第一档位为高风档位，第一档位为中风档位，第三档位为低风档位。根据上述设定形成下表1。
表1
Figure PCTCN2020100656-appb-000001
Figure PCTCN2020100656-appb-000002
如在检测到的室外环境温度为27℃且室内机的出风速度落入高风档位的情形下，此时可以根据上表1中室外环境温度和出风档位的映射关系确定限频权重为0.95。随后将从控制系统中计算得到的压缩机的控制频率乘以该限频权重即可得到防凝露模式下的压缩机的运行频率。
考虑到空调出风口凝露现象是风速场和温度场综合影响的结果，当风速升高时，凝结水蒸发速度加快，凝结水在凝结时间之前散开，从而可以缓解凝结水滴下的现象。因此，限频权重的设定规律是风速越高，限频权重越大，结合上表1可以看出，在温度区间相同的情形下，与高风档位、中风档位、低风档位对应的限频权重的取值依次减小。而室外环境温度越高，控制单元计算出的压缩机的当前控制频率会越高，此时凝露风险也会增大，也就是说，室外环境温度越高，对压缩机的控制频率的限频力度也需要加大，因此，在风速档位相同的情形下，与第一温度区间对应的限频权重的取值小于与第二温度区间对应的限频权重的取值。
可以看出，在室内机存在凝露风险的情形下，本发明综合考虑室外环境温度和室内机出风速度对导风组件的凝露现象的影响，将两者均作为考量要素来确定限频权重，然后根据限频权重降低压缩机的当前控制频率以得到防凝露模式下的运行频率，从而既能保证制冷效果，还能降低凝露风险。
需要说明的是，室外环境温度和出风速度的划分区间不仅限于上述示例，本领域技术人员可以对室外环境温度、出风温度与限频权重的映射关系根据实际应用场景进行合理设置。此外，由室外环境温度和出风速度对压缩机的当前控制频率进行调整的方式不仅限于上述示例，本领域技术人员可以根据实际需求对压缩机的当前控制频率的调整方式进行合理设置。
本领域技术人员能够理解的是，除上述描述的空调器各零部件外，空调器显然还包括其他零部件和结构，本实施方式中虽然没有描述，但是这些零部件应当按照现有技术中的空调器所具备的形状和特征进行理解，并且这些形状和特征不应当被看做是对本发明的限制。例如，空调器的室外机还包括蒸发器、冷凝器等。
至此，已经结合附图所示的优选实施方式描述了本发明的技术方案，但是，本领域技术人员容易理解的是，本发明的保护范围显然不局限于这些具体实施方式。在不偏离本发明的原理的前提下，本领域技术人员可以对相关技术特征作出等同的更改或替换，这些更改或替换之后的技术方案都将落入本发明的保护范围之内。

Claims (10)

  1. 一种空调器的控制方法，其中，所述空调器包括室内机和室外机，所述控制方法包括：
    在空调器执行防凝露模式的情形下，获取所述室外机所处的室外环境温度、所述室内机的出风速度以及所述室外机的压缩机的当前控制频率；
    根据所述室外环境温度和所述出风速度对所述压缩机的当前控制频率进行调整，以得到所述防凝露模式下的所述压缩机的运行频率。
  2. 根据权利要求1所述的控制方法，其中，“根据所述室外环境温度和所述出风速度对所述压缩机的当前控制频率进行调整，以得到所述防凝露模式下的所述压缩机的运行频率”具体包括：
    根据所述室外环境温度和所述出风速度确定限频权重；
    根据所述限频权重对所述压缩机的当前控制频率进行调整，以得到所述防凝露模式下的压缩机的运行频率。
  3. 根据权利要求2所述的控制方法，其中，所述室外环境温度预分为多个温度区间，所述出风速度预分为多个风速档位，所述限频权重预设有多个权重值，每个所述权重值分别与单个温度区间和单个风速档位对应；
    “根据所述室外环境温度和所述出风速度确定限频权重”具体包括：
    根据室外环境温度落入的温度区间以及所述出风速度落入的风速档位确定对应的权重值。
  4. 根据权利要求3所述的控制方法，其中，所述室外环境温度预分为第一温度区间和第二温度区间，
    所述第一温度区间为所述室外环境温度大于温度阈值的区间；所述第二温度区间为所述室外环境温度小于等于所述温度阈值的区间；
    其中，在风速档位相同的情形下，与所述第一温度区间对应的限频权重小于与所述第二温度区间对应的限频权重。
  5. 根据权利要求4所述的控制方法，其中，所述温度阈值为中、低风速档位的压缩机的当前控制频率的温度分割点。
  6. 根据权利要求3所述的控制方法，其中，所述出风速度预分为风速依次降低的第一档位、第二档位和第三档位，
    其中，在温度区间相同的情形下，对应于所述第一档位、所述第二档位和所述第三档位的所述限频权重依次减小。
  7. 根据权利要求1至6中任一项所述的控制方法，其中，所述控制方法包括：
    在所述空调器满足设定条件的情形下，使所述空调器执行防凝露模式；
    其中，所述设定条件包括：
    所述空调器不处于强力模式或静音模式，并且所述室内机的导风组件处于极端角度。
  8. 根据权利要求7所述的控制方法，其中，所述设定条件还包括：所述室内机所处的室内环境的相对湿度不小于预设湿度阈值。
  9. 根据权利要求8所述的控制方法，其中，所述预设湿度阈值的取值范围为75％至85％。
  10. 一种空调器，其中，所述空调器包括控制器，所述控制器用于执行权利要求1至9中任一项所述的控制方法。
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