CN104819610A - Air conditioner defrosting control device and method - Google Patents
Air conditioner defrosting control device and method Download PDFInfo
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- CN104819610A CN104819610A CN201510218396.1A CN201510218396A CN104819610A CN 104819610 A CN104819610 A CN 104819610A CN 201510218396 A CN201510218396 A CN 201510218396A CN 104819610 A CN104819610 A CN 104819610A
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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
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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
- F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
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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
- F24F2110/00—Control inputs relating to air properties
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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
- F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
- F24F11/41—Defrosting; Preventing freezing
- F24F11/42—Defrosting; Preventing freezing of outdoor units
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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
- F24F11/65—Electronic processing for selecting an operating mode
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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
- F24F2140/00—Control inputs relating to system states
- F24F2140/20—Heat-exchange fluid temperature
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Abstract
Description
技术领域technical field
本发明涉及空调领域，具体地，涉及一种空调器化霜控制装置及方法。The invention relates to the field of air conditioners, in particular to an air conditioner defrosting control device and method.
背景技术Background technique
在温度较低的情况下，用户通常会设置空调器进行制热以提高室内温度，但随着空调器制热运行时间的变长，冷凝器(室外换热器)将会出现结霜的情况，时间越长，霜将会结得越厚。如果不采取化霜控制，将会严重影响空调器的制热效果，从而大幅度的衰减制热能力，严重的话，随着时间的加长，霜累积的越多，可能会导致打坏风扇，造成空调器的损坏，给用户带来经济上的损失。When the temperature is low, the user usually sets the air conditioner for heating to increase the indoor temperature, but as the air conditioner runs longer for heating, the condenser (outdoor heat exchanger) will be frosted , the longer the time, the thicker the frost will be. If defrost control is not adopted, it will seriously affect the heating effect of the air conditioner, thereby greatly reducing the heating capacity. The damage of the air conditioner brings economic loss to the user.
现有技术的空调器化霜控制对于结霜严重的空调器需要较长的化霜时间，而化霜时间超过10分钟将会极大降空调器的使用效率，给用户带来不便；而且现有技术的空调器化霜控制甚至可能会存在化霜不干净的情况。The defrosting control of the air conditioner in the prior art requires a long defrosting time for the air conditioner with serious frosting, and the defrosting time exceeding 10 minutes will greatly reduce the use efficiency of the air conditioner and bring inconvenience to the user; The defrosting control of the air conditioner with technology may even have the situation that the defrosting is not clean.
发明内容Contents of the invention
本发明的目的是提供一种空调器化霜控制装置及方法，该空调器化霜控制装置能够加快结霜的融化速度并能够提高结霜的融化程度，进而提高了空调器的使用效率，避免造成用户使用的不舒适性。The object of the present invention is to provide a kind of air conditioner defrosting control device and method, this air conditioner defrosting control device can speed up the melting speed of frosting and can improve the melting degree of frosting, and then improve the service efficiency of air conditioner, avoid cause discomfort to users.
为了实现上述目的，本发明提供一种空调器化霜控制装置，该空调器包括室外风机，所述空调器化霜控制装置包括：控制器，用于执行以下步骤：判断所述空调器是否进入化霜阶段；以及如果所述空调器进入化霜阶段，控制所述室外风机反转以进行对流换热。In order to achieve the above object, the present invention provides an air conditioner defrost control device, the air conditioner includes an outdoor fan, and the air conditioner defrost control device includes: a controller for performing the following steps: judging whether the air conditioner enters a defrosting stage; and if the air conditioner enters the defrosting stage, controlling the reverse rotation of the outdoor fan to perform convective heat exchange.
优选地，所述室外风机的反转速度选自350转/分至900转/分。Preferably, the reverse speed of the outdoor fan is selected from 350 rpm to 900 rpm.
优选地，所述空调器包括室外换热器，所述控制器还用于在满足以下条件中的至少一者时控制所述空调器进入化霜阶段：在预设低温持续时间内所检测到的室外换热器的温度保持小于预设起始温度；以及所述空调器以制热模式运行达到预设运行时间。Preferably, the air conditioner includes an outdoor heat exchanger, and the controller is further configured to control the air conditioner to enter the defrosting phase when at least one of the following conditions is met: The temperature of the outdoor heat exchanger remains less than a preset starting temperature; and the air conditioner operates in a heating mode for a preset run time.
优选地，如果在预设时间内所检测到的室外换热器的温度保持等于或大于预设停止温度，则所述控制器控制所述室外风机停止反转，所述空调器退出化霜阶段。Preferably, if the detected temperature of the outdoor heat exchanger remains equal to or greater than a preset stop temperature within a preset time, the controller controls the outdoor fan to stop reversing, and the air conditioner exits the defrosting stage .
优选地，所述空调器化霜控制装置还包括：温度检测器，安装于所述室外换热器上，用于检测所述室外换热器的温度。Preferably, the air conditioner defrosting control device further includes: a temperature detector installed on the outdoor heat exchanger for detecting the temperature of the outdoor heat exchanger.
优选地，所述温度检测器安装于所述室外换热器的底部。Preferably, the temperature detector is installed at the bottom of the outdoor heat exchanger.
优选地，在所述空调器以制热模式运行达到预设运行时间时，所述控制器控制所述空调器进入化霜阶段。Preferably, the controller controls the air conditioner to enter a defrosting phase when the air conditioner operates in a heating mode for a preset operating time.
优选地，所述空调器包括室内风机和切换器，在所述空调器进入化霜阶段的情况下，在控制所述室外风机反转之前，所述控制器还用于：控制所述室内风机和所述室外风机停止运转；以及控制所述切换器动作以形成制冷循环。Preferably, the air conditioner includes an indoor fan and a switch, and when the air conditioner enters the defrosting stage, before controlling the reverse rotation of the outdoor fan, the controller is also used to: control the indoor fan and the outdoor fan is stopped; and the switch is controlled to form a refrigeration cycle.
优选地，所述空调器包括压缩机，在所述空调器进入化霜阶段的情况下，所述控制器还用于：控制所述压缩机停止运行预设停止时间后再次启动所述压缩机，在所述压缩机再次启动的同时或在所述压缩机再次启动之前控制所述室外风机反转。Preferably, the air conditioner includes a compressor, and when the air conditioner enters the defrosting phase, the controller is further configured to: control the compressor to stop running for a preset stop time and restart the compressor , controlling the reverse rotation of the outdoor fan while the compressor is restarted or before the compressor is restarted.
优选地，所述切换器为四通阀。Preferably, the switcher is a four-way valve.
相应地，本发明还提供一种空调器化霜控制方法，该空调器包括室外风机，所述空调器化霜控制方法包括：判断所述空调器是否进入化霜阶段；以及如果所述空调器进入化霜阶段，控制所述室外风机反转以进行对流换热。Correspondingly, the present invention also provides an air conditioner defrosting control method, the air conditioner includes an outdoor fan, the air conditioner defrosting control method includes: judging whether the air conditioner enters the defrosting stage; and if the air conditioner Entering the defrosting stage, the outdoor fan is controlled to reverse to perform convective heat exchange.
优选地，所述室外风机的反转速度选自350转/分至900转/分。Preferably, the reverse speed of the outdoor fan is selected from 350 rpm to 900 rpm.
优选地，所述空调器包括室外换热器，在满足以下条件中的至少一者时所述空调器进入化霜阶段：在预设低温持续时间内所检测到的室外换热器的温度保持小于预设起始温度；所述空调器以制热模式运行达到预设运行时间。Preferably, the air conditioner includes an outdoor heat exchanger, and the air conditioner enters the defrosting phase when at least one of the following conditions is met: the temperature of the outdoor heat exchanger detected within the preset low temperature duration remains is less than a preset starting temperature; the air conditioner operates in a heating mode for a preset operating time.
优选地，如果在预设时间内所检测到的室外换热器的温度保持等于或大于预设停止温度，则控制所述室外风机停止反转，所述空调器退出化霜阶段。Preferably, if the detected temperature of the outdoor heat exchanger remains equal to or greater than a preset stop temperature within a preset time, the outdoor fan is controlled to stop reversing, and the air conditioner exits the defrosting phase.
优选地，所述空调器包括室内风机和切换器，在所述空调器进入化霜阶段的情况下，在控制所述室外风机反转之前，所述空调器化霜控制方法还包括：控制所述室内风机和所述室外风机停止运转；以及控制所述切换器动作以形成制冷循环。Preferably, the air conditioner includes an indoor fan and a switch, and when the air conditioner enters the defrosting stage, before controlling the reverse rotation of the outdoor fan, the air conditioner defrosting control method further includes: controlling the stop the indoor fan and the outdoor fan; and control the action of the switch to form a refrigeration cycle.
优选地，所述空调器包括压缩机，在所述空调器进入化霜阶段的情况下，所述空调器化霜控制方法还包括：控制所述压缩机停止运行预设停止时间后再次启动所述压缩机，在所述压缩机再次启动的同时或在所述压缩机再次启动之前控制所述室外风机反转。Preferably, the air conditioner includes a compressor, and when the air conditioner enters the defrosting stage, the air conditioner defrosting control method further includes: controlling the compressor to stop running for a preset stop time and restarting the compressor. the compressor, and control the reverse rotation of the outdoor fan when the compressor is restarted or before the compressor is restarted.
通过上述技术方案，在空调器进入化霜阶段时，控制所述室外风机反转以进行对流换热，加快了室外换热器的化霜速度进而提高了空调器的使用效率，避免造成用户使用的不舒适性，并且提高了化霜程度，提高了低温制热量，进而提高了季节能效。Through the above technical solution, when the air conditioner enters the defrosting stage, the outdoor fan is controlled to reverse to perform convective heat exchange, which speeds up the defrosting speed of the outdoor heat exchanger and thus improves the use efficiency of the air conditioner, avoiding causing users to use The discomfort, and improve the degree of defrosting, increase the low-temperature heating capacity, and thus improve the seasonal energy efficiency.
本发明的其它特征和优点将在随后的具体实施方式部分予以详细说明。Other features and advantages of the present invention will be described in detail in the detailed description that follows.
附图说明Description of drawings
附图是用来提供对本发明的进一步理解，并且构成说明书的一部分，与下面的具体实施方式一起用于解释本发明，但并不构成对本发明的限制。在附图中：The accompanying drawings are used to provide a further understanding of the present invention, and constitute a part of the description, together with the following specific embodiments, are used to explain the present invention, but do not constitute a limitation to the present invention. In the attached picture:
图1是根据本发明的空调器化霜控制装置的结构示意图；Fig. 1 is a schematic structural view of an air conditioner defrosting control device according to the present invention;
图2是具有本发明提供的空调器化霜控制装置的空调器的结构示意图；以及Fig. 2 is the structural representation of the air conditioner with the air conditioner defrosting control device provided by the present invention; and
图3是根据本发明一种实施方式的空调器化霜控制方法的流程图。Fig. 3 is a flowchart of a defrosting control method for an air conditioner according to an embodiment of the present invention.
附图标记说明Explanation of reference signs
10 空调化霜控制装置 11 控制器10 Air conditioner defrost control device 11 Controller
12 温度检测器 100 室内机12 Temperature detector 100 Indoor unit
110 室内换热器 120 室内风机110 Indoor heat exchanger 120 Indoor fan
200 室外机 210 压缩机200 Outdoor unit 210 Compressor
220 室外风机 230 室外换热器220 Outdoor fan 230 Outdoor heat exchanger
240 毛细管 250 四通阀240 Capillary 250 Four-way valve
具体实施方式Detailed ways
以下结合附图对本发明的具体实施方式进行详细说明。应当理解的是，此处所描述的具体实施方式仅用于说明和解释本发明，并不用于限制本发明。Specific embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings. It should be understood that the specific embodiments described here are only used to illustrate and explain the present invention, and are not intended to limit the present invention.
图1是根据本发明的空调器化霜控制装置的结构示意图。如图1所示，本发明提供了一种空调化霜控制装置10，空调器包括室外风机220，其中，所述空调器化霜控制装置10包括：控制器11，用于执行以下步骤：判断所述空调器是否进入化霜阶段；以及如果所述空调器进入化霜阶段，控制所述室外风机220反转以进行对流换热。以便提高换热效果，提升空调器的化霜效率，进而提高空调器的使用效率，改善化霜程度，提高低温制热量。Fig. 1 is a structural schematic diagram of an air conditioner defrosting control device according to the present invention. As shown in Figure 1, the present invention provides an air conditioner defrost control device 10, the air conditioner includes an outdoor fan 220, wherein, the air conditioner defrost control device 10 includes: a controller 11, which is used to perform the following steps: determine Whether the air conditioner enters the defrosting stage; and if the air conditioner enters the defrosting stage, control the reverse rotation of the outdoor fan 220 to perform convective heat exchange. In order to improve the heat exchange effect, improve the defrosting efficiency of the air conditioner, and then improve the use efficiency of the air conditioner, improve the defrosting degree, and increase the low-temperature heating capacity.
所述室外风机220的反转速度可以设置为化霜之前所运行的转速，或者可以选自350转/分至900转/分，当然本发明并不限制于此。The reverse speed of the outdoor fan 220 can be set to the running speed before defrosting, or can be selected from 350 rpm to 900 rpm, of course the present invention is not limited thereto.
所述空调器包括室外换热器，如图1所示，空调器化霜控制装置10还可以包括温度检测器12(图中虚线框所示)，安装于所述室外换热器上，用于检测所述室外换热器的温度；其中，为了保证进入及退出化霜阶段的正确判断，避免室外换热器结霜过厚才进入化霜阶段或结霜程度过低就进入化霜阶段，所述控制器11还用于当在预设低温持续时间内所检测到的室外换热器的温度保持小于预设起始温度时控制所述空调器进入化霜阶段；当所检测到的室外换热器的温度大于或等于预设停止温度时控制所述空调器退出化霜阶段。通过上述控制进一步保证了化霜效率，进而提高了空调器的使用效率。其中为了能够及时进入化霜阶段，温度检测器12可以安装在室外换热器的底部，例如安装在位于室外换热器底部的盘管上，以使得检测到的温度能够及时反映室外换热器的结霜程度。The air conditioner includes an outdoor heat exchanger. As shown in FIG. 1, the air conditioner defrosting control device 10 may also include a temperature detector 12 (shown in a dotted line box in the figure), which is installed on the outdoor heat exchanger for use in To detect the temperature of the outdoor heat exchanger; wherein, in order to ensure the correct judgment of entering and exiting the defrosting stage, avoid entering the defrosting stage when the outdoor heat exchanger is frosted too thick or entering the defrosting stage when the frosting degree is too low , the controller 11 is also used to control the air conditioner to enter the defrosting phase when the detected temperature of the outdoor heat exchanger within the preset low temperature duration remains below the preset initial temperature; When the temperature of the heat exchanger is greater than or equal to the preset stop temperature, the air conditioner is controlled to exit the defrosting stage. Through the above control, the defrosting efficiency is further ensured, thereby improving the use efficiency of the air conditioner. In order to be able to enter the defrosting stage in time, the temperature detector 12 can be installed at the bottom of the outdoor heat exchanger, for example, on the coil pipe at the bottom of the outdoor heat exchanger, so that the detected temperature can reflect the temperature of the outdoor heat exchanger in time. degree of frosting.
当然进入及退出化霜阶段的判断还可以基于空调器制热运行的时间和化霜持续的时间，基于实际情况，可以预设相应的时间值，以定时进行化霜。因而，所述控制器11还用于：在所述空调器以制热模式运行达到预设运行时间时，控制所述空调器进入化霜阶段，当然也可以在上述两个进入化霜阶段的条件结合起来，即当同时满足上述两个条件时，控制所述空调器进入化霜阶段；当所述化霜阶段持续时间达到预设持续时间时，控制所述空调器退出化霜阶段。Of course, the judgment of entering and exiting the defrosting stage can also be based on the heating operation time of the air conditioner and the defrosting duration. Based on the actual situation, a corresponding time value can be preset to perform defrosting at regular intervals. Therefore, the controller 11 is also used to control the air conditioner to enter the defrosting phase when the air conditioner operates in the heating mode for a preset running time, and of course it can also be used during the above two defrosting phases. The conditions are combined, that is, when the above two conditions are met at the same time, the air conditioner is controlled to enter the defrosting phase; when the duration of the defrosting phase reaches a preset duration, the air conditioner is controlled to exit the defrosting phase.
在确定空调器进入化霜阶段的情况下，开始执行化霜控制过程。控制器11控制空调器的室内风机和室外风机220停止运转，并控制空调器的切换器动作以形成制冷循环，所述切换器能够进行制冷循环和制热循环之间的切换，然后控制器控制室外风机220反转。由于从制热循环切换至制冷循环，管路中的压力不平稳，可能会造成压缩机的损坏，因此优选地，可以在室外风机220反转之前控制压缩机停止运行，经过预设停止时间后再次启动压缩机，以避免损坏压缩机。其中所述切换器可以为四通阀。When it is determined that the air conditioner enters the defrosting phase, the defrosting control process is started. The controller 11 controls the indoor fan and the outdoor fan 220 of the air conditioner to stop running, and controls the action of the switch of the air conditioner to form a refrigeration cycle. The switch can switch between the refrigeration cycle and the heating cycle, and then the controller controls The outdoor fan 220 reverses. Due to switching from the heating cycle to the cooling cycle, the pressure in the pipeline is not stable, which may cause damage to the compressor. Therefore, preferably, the compressor can be controlled to stop running before the outdoor fan 220 reverses, and after a preset stop time Start the compressor again to avoid damaging the compressor. Wherein the switcher may be a four-way valve.
通常，空调器的化霜指的是针对室外换热器的化霜，室外风扇220安装在室外换热器的内侧(此处及下文中所提到的室外换热器的内侧指的是室外换热器远离室外机外部的一面)，其可以正向(顺时针)运转，也可以反向(逆时针)运转，此时，室外风扇220从外侧向内侧吸风以向室外机外部排风。在空调器制热模式或制冷模式运行时，室外风扇220为正向运转。在化霜阶段，室外换热器的最内侧部分(对于多排换热器来说是最内侧的那排盘管)先化霜，最内侧部分的温度升高最快。在化霜阶段控制室外风机220反转，使其从内侧向外侧吹风，进行强迫对流换热，进而将热量逐渐带至室外换热器的外侧部分，缩短了室外换热器的化霜时间，提高了室外换热器的化霜效率。当温度检测器12所检测到的温度大于或等于预设停止温度(例如8℃)时控制所述空调器退出化霜阶段，或者温度检测器12在预设时间内所检测到的温度大于或等于预设停止温度时控制所述空调器退出化霜阶段，并按照之前的运转模式继续运行。Generally, the defrosting of the air conditioner refers to the defrosting of the outdoor heat exchanger, and the outdoor fan 220 is installed on the inside of the outdoor heat exchanger (the inside of the outdoor heat exchanger mentioned here and below refers to the outdoor The side of the heat exchanger away from the outside of the outdoor unit), it can run forward (clockwise) or reverse (counterclockwise), at this time, the outdoor fan 220 sucks air from the outside to the inside to exhaust the outside of the outdoor unit . When the air conditioner is running in the heating mode or the cooling mode, the outdoor fan 220 is running forward. In the defrosting stage, the innermost part of the outdoor heat exchanger (for a multi-row heat exchanger, the innermost row of coils) defrosts first, and the temperature of the innermost part rises the fastest. In the defrosting stage, the outdoor fan 220 is controlled to reverse, so that it blows air from the inside to the outside to perform forced convection heat exchange, and then gradually bring the heat to the outside of the outdoor heat exchanger, shortening the defrosting time of the outdoor heat exchanger. The defrosting efficiency of the outdoor heat exchanger is improved. When the temperature detected by the temperature detector 12 is greater than or equal to the preset stop temperature (for example, 8°C), the air conditioner is controlled to exit the defrosting phase, or the temperature detected by the temperature detector 12 within the preset time is greater than or equal to When the temperature is equal to the preset stop temperature, the air conditioner is controlled to exit the defrosting phase and continue to operate according to the previous operation mode.
以下将结合图2通过具体实施方式来详细描述本发明，但是本发明并不限制于此。The present invention will be described in detail below with reference to FIG. 2 through a specific embodiment, but the present invention is not limited thereto.
图2是具有本发明提供的空调器化霜控制装置的空调器的结构示意图。如图2所示，空调器包括室内部分100和室外部分200，其中室内部分100包括室内换热器110和室内风机120；室外部分200包括压缩机210、室外风机220、室外换热器230、毛细管240和四通阀250,。室外温度传感器12安装于室外换热器230上。图中实线箭头表示的制冷循环方向，虚线箭头表示制热循环方向。Fig. 2 is a structural schematic diagram of an air conditioner provided with the air conditioner defrosting control device provided by the present invention. As shown in Figure 2, the air conditioner includes an indoor part 100 and an outdoor part 200, wherein the indoor part 100 includes an indoor heat exchanger 110 and an indoor fan 120; the outdoor part 200 includes a compressor 210, an outdoor fan 220, an outdoor heat exchanger 230, Capillary 240 and four-way valve 250'. The outdoor temperature sensor 12 is installed on the outdoor heat exchanger 230 . In the figure, the solid line arrow indicates the direction of the refrigeration cycle, and the dotted line arrow indicates the direction of the heating cycle.
空调器以制热模式运行时，压缩机210将制冷剂压缩成高压气体并排出，此时四通阀250处于通电状态，形成制热循环，排出的高压气体经过四通阀250后进入至室内机100的室内换热器110中进行换热，换热的同时室内风机120运转以便热量的排出；高压气体经过换热后变成高压液体，然后经过毛细管240节流后进入到室外换热器230蒸发变成低压气体，同时会进行吸热，最后通过四通阀250回至压缩机210中，如此进行。上述过程为空调器制热模式下的一个制热循环。When the air conditioner is running in the heating mode, the compressor 210 compresses the refrigerant into high-pressure gas and discharges it. At this time, the four-way valve 250 is in the energized state to form a heating cycle. The discharged high-pressure gas enters the room after passing through the four-way valve 250 The heat is exchanged in the indoor heat exchanger 110 of the machine 100, and the indoor fan 120 is running at the same time to discharge the heat; the high-pressure gas becomes a high-pressure liquid after heat exchange, and then enters the outdoor heat exchanger after being throttled by the capillary tube 240 230 evaporates into low-pressure gas, absorbs heat at the same time, and finally returns to the compressor 210 through the four-way valve 250, and so on. The above process is a heating cycle in the heating mode of the air conditioner.
当温度检测器12在5分钟内检测到的室外换热器30温度均小于-3℃，则控制器11控制空调器进入化霜阶段。控制器11控制压缩机210、室外风机220和室内风机120停止运行，并控制四通阀250断电以形成制冷循环。为了避免对压缩机210造成损坏，可以在压缩机210停止运行一段时间(例如30秒)后再次控制其启动。此时空调器处于制冷模式下，室外换热器230会向外释放热量以进行化霜，而为了加快室外换热器230上结霜的融化速度，控制器11控制室外风扇220反转以产生对流换热。为了在压缩机210稳定运行后在启动室外风扇220，可以从压缩机210启动开始计时，在30秒后再控制室外风扇220反转，以保证空调器的稳定运行。当温度检测器12所检测到的温度大于或等于预设停止温度时控制所述空调器退出化霜阶段，或者温度检测器12在预设时间内所检测到的温度大于或等于预设停止温度时控制所述空调器退出化霜阶段，并控制室内风机120、室外风机220正常运转及控制四通阀250通电，使得空调器按照之前的运转模式继续运行。When the temperature of the outdoor heat exchanger 30 detected by the temperature detector 12 within 5 minutes is less than -3°C, the controller 11 controls the air conditioner to enter the defrosting stage. The controller 11 controls the compressor 210, the outdoor fan 220 and the indoor fan 120 to stop running, and controls the four-way valve 250 to cut off power to form a refrigeration cycle. In order to avoid damage to the compressor 210, the compressor 210 may be controlled to start again after it stops running for a period of time (for example, 30 seconds). At this time, the air conditioner is in the cooling mode, and the outdoor heat exchanger 230 will release heat to defrost. In order to speed up the melting speed of the frost on the outdoor heat exchanger 230, the controller 11 controls the outdoor fan 220 to reverse to generate Convective heat exchange. In order to start the outdoor fan 220 after the compressor 210 runs stably, the timing can be started from the start of the compressor 210, and the outdoor fan 220 is controlled to reverse after 30 seconds to ensure the stable operation of the air conditioner. When the temperature detected by the temperature detector 12 is greater than or equal to the preset stop temperature, the air conditioner is controlled to exit the defrosting phase, or the temperature detected by the temperature detector 12 within a preset time is greater than or equal to the preset stop temperature Control the air conditioner to exit the defrosting stage, and control the normal operation of the indoor fan 120 and the outdoor fan 220 and control the four-way valve 250 to power on, so that the air conditioner continues to run according to the previous operation mode.
相应地，本发明还提供一种空调器化霜控制方法。该空调器包括室外风机，所述空调器化霜控制方法包括：判断所述空调器是否进入化霜阶段；以及如果所述空调器进入化霜阶段，控制所述室外风机反转以进行对流换热。Correspondingly, the present invention also provides an air conditioner defrosting control method. The air conditioner includes an outdoor fan, and the air conditioner defrosting control method includes: judging whether the air conditioner enters the defrosting stage; and if the air conditioner enters the defrosting stage, controlling the outdoor fan to reverse to perform convection hot.
图3是根据本发明一种实施方式的空调器化霜控制方法的流程图。如图3所示，在步骤301处，空调器以制热模式运行；在步骤302处，判断在预设低温持续时间内室外换热器的温度是否小于预设起始温度；如果在预设低温持续时间内室外换热器的温度小于预设起始温度，则在步骤303处，控制室内风机、室外风机和压缩机停止运转，并控制四通阀断电；在步骤304处，控制室外风机反转并控制压缩机运转；此时空调器进行化霜，在步骤305处，判断室外换热器的温度是否大于或等于预设停止温度；如果室外换热器的温度大于或等于预设停止温度，则在步骤306处控制室内风机和室外风机正常运转并控制四通阀通电，以使得空调器按照之前的运行模式运转。Fig. 3 is a flowchart of a defrosting control method for an air conditioner according to an embodiment of the present invention. As shown in Figure 3, at step 301, the air conditioner operates in the heating mode; at step 302, it is judged whether the temperature of the outdoor heat exchanger is less than the preset starting temperature within the preset low temperature duration; If the temperature of the outdoor heat exchanger is lower than the preset initial temperature during the low temperature duration, then at step 303, control the indoor fan, outdoor fan and compressor to stop running, and control the four-way valve to power off; at step 304, control the outdoor The fan reverses and controls the operation of the compressor; at this time, the air conditioner defrosts, and at step 305, it is judged whether the temperature of the outdoor heat exchanger is greater than or equal to the preset stop temperature; if the temperature of the outdoor heat exchanger is greater than or equal to the preset If the temperature is stopped, then at step 306, the indoor fan and the outdoor fan are controlled to operate normally and the four-way valve is controlled to be energized, so that the air conditioner operates according to the previous operation mode.
有关空调器化霜控制方法的具体细节及益处与上述针对空调器化霜控制装置的细节及益处相同，于此不再赘述。The specific details and benefits of the defrosting control method for the air conditioner are the same as those for the defrosting control device for the air conditioner, and will not be repeated here.
以上结合附图详细描述了本发明的优选实施方式，但是，本发明并不限于上述实施方式中的具体细节，在本发明的技术构思范围内，可以对本发明的技术方案进行多种简单变型，这些简单变型均属于本发明的保护范围。The preferred embodiment of the present invention has been described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the specific details of the above embodiment, within the scope of the technical concept of the present invention, various simple modifications can be made to the technical solution of the present invention, These simple modifications all belong to the protection scope of the present invention.
另外需要说明的是，在上述具体实施方式中所描述的各个具体技术特征，在不矛盾的情况下，可以通过任何合适的方式进行组合，为了避免不必要的重复，本发明对各种可能的组合方式不再另行说明。In addition, it should be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable way if there is no contradiction. The combination method will not be described separately.
此外，本发明的各种不同的实施方式之间也可以进行任意组合，只要其不违背本发明的思想，其同样应当视为本发明所公开的内容。In addition, various combinations of different embodiments of the present invention can also be combined arbitrarily, as long as they do not violate the idea of the present invention, they should also be regarded as the disclosed content of the present invention.
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| CN114593502B (en) * | 2022-04-20 | 2024-04-26 | 美的集团武汉暖通设备有限公司 | Defrosting control method of air conditioner, controller, air conditioner and storage medium |
| CN115013942A (en) * | 2022-04-26 | 2022-09-06 | 宁波奥克斯电气股份有限公司 | Air conditioner defrosting control method and device and air conditioner |
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Effective date of registration: 20260114 Address after: No.2000, guangqiong Road, economic and Technological Development Zone, Jiaxing City, Zhejiang Province, 314000 Patentee after: Zhejiang Midea Thermal Energy Technology Co.,Ltd. Country or region after: China Address before: 528311 Beijiao City, Guangdong Province, Shunde Town, Lin Gang Road, Foshan Patentee before: GD MIDEA AIR-CONDITIONING EQUIPMENT Co.,Ltd. Country or region before: China Patentee before: MIDEA GROUP Co.,Ltd. |