变频与定频的区别

变频与定频的区别 变频空调与定频空调的区别 变频空调的概念 一般空调机由于电源频率50Hz是固定的，所以压缩机的转速是固定的，也就是被称为“空调机血液”的冷媒(氟利昂)的循环是恒量的，在一定时间内冷媒的循环量越大，空调机的输出功率就越高。也就是说，压缩机的转速决定了空调机的输出功率。 其主要特点为: 变频器能使压缩机电动机的转速无级连续可调，其转速是根据室内空调负荷而成比例变化的，当室内需要急速降温(或急速升温)，空调负荷加大时，压缩机转速就加快，制冷量(或制热量)就按比例增加，当达到设定温度时，随即处于低速运转维持室温基本不变。变频空调的节流是运用电子膨胀阀控制流量，它的室外微处理器可以根据设在膨胀阀进出口、压缩机中气管处的温度传感器收集的信息来控制阀门的开启度，随时改变制冷剂的流量。压缩机的转速与膨胀阀的开启度相对应，使蒸发器的能力得到最大限度的发挥。同时，由于采用了电子膨胀阀作为节流元件，化霜时不停机，利用压缩机排气的热量先向室内供热，余下热量送到室外，将换热器翅片上的霜融化。变频空调将逐步取代传统的定转速空调，成为空调控制技术发展的主流。变频技术已从交流式向直流式转化，控制技术由PWM(脉冲宽度调制)发展为PAM(脉冲振幅调制)。采用PWM控制方式的压缩机转速受到上限转速的限制，一般不超过7000转/分，而采用PAM控制方式的压缩机转速可提高1.5倍左右，这样大大提高了制冷和低温下的制冷能力。 空调的分类和区别 变频空调按照工作原理可以分为交流变频和直流变转速两类，直流变频空调只是俗称罢了。直流电路的两个电极的极性是固定不变的，电流只有一个流向，不会发生交变，根本无频率可言。谈何变频?采用的直流调速技术要远远优于调频技术，直流变转速是正确的叫法。有关DC直流变转速空调和AC变频空调的简单区别:直流调速只经过一次电压转换，所以能源损耗比调频调速要小。另外，由于这种直流电机的转子是永磁的，又省却了三相交流异步电机的转子电流消耗。所以，它从电网电源到电动机这一段的功率因数要比调频调速方式高，节省了一定的能量。 变频空调对传统空调的优缺点和特点 变频/变转速空调器相对于传统空调器来讲，主要有5大特点: ? 启动电流低，故不存在启动电流对电网和对电度的冲击，也减少了对室内其它正在使用的家用电器的脉冲干扰影响。 ? 低温运行性能好，制暖性能明显优于传统空调器。 the public to participate in, in imperceptible provided L people's cultural quality. To built use "Juxian issued on the micro channel," civilized Juxian "micro channel, Ju, networks and other mainstream network media continued to push send online is energy information, and create a good network environment. Deepen the action of the beautiful countryside civilization, to carry out a wide range of" new countryside, new life "training, give full play to the village population culture courtyard, Park Street, cultural square and other positions the role of publicity and education, promote rural way of life more civilized. This year the province's urban and rural sanitation integration of the rural masses satisfaction telephone survey, significantly improved performance in our county, respectively, than the end of last year, years to improve the 5.2,17.5 percentage points. The township streets. Relevant departments of counties units should conscientiously sum up experience, adhere to the problem oriented, people are not satisfied with the village as the focus of the work, insist on grasping both ends, with the middle, to consolidate and improve, expand further effort, in the realization of the normal long-term efforts, to ensure that the end of this year to obtain better results. Third, we need to accelerate the voluntary service system. To actively promote the party members and members and cadres normalization of volunteer service, do a good job in public places, window units and community volunteer service station construction, establishment of covering the whole ? 控温波动小，避免了传统空调器采用的开/ 停运转控制易造成的室内温度上下波动大 、感觉不舒服的缺陷。 ? 电网电压适应性强，相比较传统空调器，有些变频空调器能在较宽电压范围内工作。有的甚至在低于187V时也能运行自如。 ? 控温速度快，能迅速将房间带入控温范围。 优点:变频空调空调采用了变频电源、变频压缩机、电子膨胀阀和微电脑技术的有机结合，使空调性能进一步提高，使用时房间温度波动小，舒适性更佳，对电源电压波动不敏感，压缩机启动后，一般不停机，制冷量在35%,117%的范围内变化，避免了普通空调的频繁开停，延长了压缩机的寿命，同时具有高效、节能的特点。 缺点:价格较贵，同普通空调相比，约高出1/3,1/4的价格，同时，由于变频空调的控制系统和变频系统较为复杂，对元器件要求较高，相比较普通空调，变频空调的故障率较高，而且，由于采用了变频技术，在变频的同时，会产生谐波污染。 变频空调使用小技巧 应根据房间的面积来确定所选变频空调P数的大小，一般1P机使用在不大于14平方米房间。尽量避免在超面积的情况下使用，不要将温度设置过低，使用时最好设置在“自动”挡，此时既舒适又节电。 其他 定频空调是压缩机以50HZ转动的，以电机转和停来控制温度，变频空调压缩机转速是变化的，转速高低来控制温度 变频空调:高效、节能、舒适、静音、制冷快、恒温稳定;特别适合家中老人，小孩不易得空调病。定频空调:制冷制热功率单一、忽冷忽热;容易得空调病。 海信变频空调好:一，变频空调低频起动、不会对电网冲击。二，高效节能制冷快。三，低频恒温稳定。 海信变频空调是国内首家主功变频的，经过十二年研发已掌握了变频的核心技术;变频空调:高效、节能、舒适、静音，恒温准。海信变频空调特有的超级智能随身感:即先进的人机对话方式、及时纠正人体周围温度与设定温度的偏差，确保恒温更稳定。 变频空调和普通空调不同处: 1变频空调是用交流电频率来控制压缩机的转速,从而控制室内温度.而普通空调是采用的继电器来控制压缩机的工作时间,来控制室内温度的. 2变频空调压缩机不会停机而普通空调的压缩机就要停机. 3变频空调能够很好的保持室内温度的平衡,而普通空调只能相对保持室内温度平衡. 4由于普通空调采用的继电器来控制压缩机的工作,频繁的关开机也是对压缩机the public to participate in, in imperceptible provided L people's cultural quality. To built use "Juxian issued on the micro channel," civilized Juxian "micro channel, Ju, networks and other mainstream network media continued to push send online is energy information, and create a good network environment. Deepen the action of the beautiful countryside civilization, to carry out a wide range of" new countryside, new life "training, give full play to the village population culture courtyard, Park Street, cultural square and other positions the role of publicity and education, promote rural way of life more civilized. This year the province's urban and rural sanitation integration of the rural masses satisfaction telephone survey, significantly improved performance in our county, respectively, than the end of last year, years to improve the 5.2,17.5 percentage points. The township streets. Relevant departments of counties units should conscientiously sum up experience, adhere to the problem oriented, people are not satisfied with the village as the focus of the work, insist on grasping both ends, with the middle, to consolidate and improve, expand further effort, in the realization of the normal long-term efforts, to ensure that the end of this year to obtain better results. Third, we need to accelerate the voluntary service system. To actively promote the party members and members and cadres normalization of volunteer service, do a good job in public places, window units and community volunteer service station construction, establishment of covering the whole 寿命的最大损害而变频的就不存在这个问题.而且开机时也是电流最大的时候,也就是最耗电,变频空调就不存在而省电. 5普通空调只要一开机就是最大的输入和输出功率,而变频空调就不一样了,它可以自动调低交流电频率，降低压缩的转速,当室内温度越接近设置温度,转速就越慢,它的输出和输入功率就越小,所以比起普通空调,变频空调更省电节能. 电的基本参数有电压、电流和频率。压缩机的转速在电压一定的前提下与频率成正比利关系，即频率高时压缩机的转速对应升高，反之降低。变频空调与定频空调的主要区别在于压缩机的转速的不同:变频空调的压缩机转速可调，而定频压缩机的转速恒定。220V的定频压缩机的绕组只有启动绕组和运行绕组共两组，而220V的变频压缩机的绕组是模拟三相绕组。当然压缩机本身不能改变频率，而是通过电脑板执行的。变频空调开机时转速快，冷媒循环速度也加快，所以制冷(或制热)的速度也快，而且快达到设定使用温度时，压缩机的转速会自动降低，随着室温与设定温度差值的大小而随时调整压缩机的转速。变频空调的优点在于能使室温无限接近与设定值，所以舒适性比定频空调好，而且可以减少压缩机的启动次数，降低耗电量。普通定频空调的压缩机的转速一定，制冷(或制热)的速度比定频空调慢，室温波动较大，舒适性差，压缩机起停次数多，耗电量大，但维修成本比变频空调低。 譬如制热状态，你设定23?的温度，普通空调机运转时，温度到达23度，就是停止制热，当温度降下来，约在19-20度之间，空调机再次启动制热，升温。不断循环。这样运转的结果，温度是在一定的范围内变化的，不能恒定，且空调机的压缩机将不断启动停止，对电网的电压有冲击，对自身的寿命也有影响。 变频空调机在温度接近23度的时候，就开始降频使用，空调机的制热能力将降低，是的温度在23度附近缓慢变化，当温度达到23度时，基本停转，处于不工作状态，温度略为降一点，压缩机又缓慢工作，维持23度的温度基本不变。这样的运转可以较好保持温度在23度左右一点，变化很小。且变频机的启动停止都是软启动的，对电网及其自身都没有任何冲击。 所以认为变频空调机好于一般空调机。 定频也就是我们长说的工频50~60HZ,空调在工频下运做温差很大,变频是根据温度来调节压缩面的运行频率的,就么说吧,工频不能改变压缩面的运行频率到快要到设定温度时也是正常运行,而变频快到设定温度时就会通过模快降压降频. 变频空调:高效、节能、舒适、静音、制冷快、恒温稳定. 定频空调:制冷制热功率单一、忽冷忽热;容易得空调病。 the public to participate in, in imperceptible provided L people's cultural quality. To built use "Juxian issued on the micro channel," civilized Juxian "micro channel, Ju, networks and other mainstream network media continued to push send online is energy information, and create a good network environment. Deepen the action of the beautiful countryside civilization, to carry out a wide range of" new countryside, new life "training, give full play to the village population culture courtyard, Park Street, cultural square and other positions the role of publicity and education, promote rural way of life more civilized. This year the province's urban and rural sanitation integration of the rural masses satisfaction telephone survey, significantly improved performance in our county, respectively, than the end of last year, years to improve the 5.2,17.5 percentage points. The township streets. Relevant departments of counties units should conscientiously sum up experience, adhere to the problem oriented, people are not satisfied with the village as the focus of the work, insist on grasping both ends, with the middle, to consolidate and improve, expand further effort, in the realization of the normal long-term efforts, to ensure that the end of this year to obtain better results. Third, we need to accelerate the voluntary service system. To actively promote the party members and members and cadres normalization of volunteer service, do a good job in public places, window units and community volunteer service station construction, establishment of covering the whole 变频空调还分直流变速和交流变频。 直流变速是直接一次转换，直流电是只有速度而没有频率的，交流变频是要将交流电转换为直流电的，需要两次转换。所以真正省电的是直流变速机:恒温，省电，制冷暖速度快等 定频空调，当它达到你设定的温度时它就停止压缩机工作，室温上去时，压缩机再启动工作。就这样反复停机启动，室内温差大，而且每次启动的电流大，费电，也影响压缩机使用寿命。 支持风行止的意见。解释的非常易懂到位。讲的真好。 其他网友的回答也很不错。 传统空调压缩机依靠其不断地“开、停”来调整室内温度，其一开一停之间容易造成室温忽冷忽热，并消耗较多电能。变频空调则依靠压缩机转速的快慢达到控制室温的目的，室温波动小、电能消耗少，其舒适度大大提高。而运用变频控制技术的变频空调，可根据环境温度自动选择制热、制冷和除湿运转方式，使居室在短时间内迅速达到所需要的温度并在低转速、低能耗状态下以较小的温差波动，实现了快速、节能和舒适控温效果。 变频空调的核心是它的变频器，变频器是20世纪80年代问世的一种高新 技术，它通过对电流的转换来实现电动机运转频率的自动调节，把50Hz的固定电网频率改为30至130Hz的变化频率，使空调完成了一个新革命。同时，还使电源电压范围达到142V至270V，彻底解决了由于电网电压的不稳定而造成空调器不能工作的难题。 变频空调每次开始使用时，通常是让空调以最大功率、最大风量进行制热或制冷，迅速接近所设定的温度。由于变频空调通过提高压缩机工作频率的方式，增大了在低温时的制热能力，最大制热量可达到同品牌、同级别空调器的1.5倍。此外，一般的分体机只有四档风速可供调节，而变频空调器的室内风机自动运行时，转速会随压缩机的工作频率在12档风速范围内变化，由于风机的转速与空调器的能力配合较为合理，实现了低噪音的宁静运行。 当空调高功率运转，迅速接近所设定的温度后，压缩机便在低转速、低能耗状态运转，仅以所需的功率维持设定的温度。这样不但温度稳定，还避免了压缩机频繁地开开停停所造成的对寿命的衰减，而且耗电量大大下降，实现了高效节能。 变频空调的概念 一般空调机由于电源频率50Hz是固定的，所以压缩机的转速是固定的，也就是被称为“空调机血液”的冷媒(氟利昂)的循环是恒量的，在一定时间内冷媒的循环量越大，空调机的输出功率就越高。也就是说，压缩机的转速决定了空调机的输出功率。 而变频空调是一种使用变频压缩机和模糊控制技术的空调器，能根据室内气温的变化，调节制冷速度。具the public to participate in, in imperceptible provided L people's cultural quality. To built use "Juxian issued on the micro channel," civilized Juxian "micro channel, Ju, networks and other mainstream network media continued to push send online is energy information, and create a good network environment. Deepen the action of the beautiful countryside civilization, to carry out a wide range of" new countryside, new life "training, give full play to the village population culture courtyard, Park Street, cultural square and other positions the role of publicity and education, promote rural way of life more civilized. This year the province's urban and rural sanitation integration of the rural masses satisfaction telephone survey, significantly improved performance in our county, respectively, than the end of last year, years to improve the 5.2,17.5 percentage points. The township streets. Relevant departments of counties units should conscientiously sum up experience, adhere to the problem oriented, people are not satisfied with the village as the focus of the work, insist on grasping both ends, with the middle, to consolidate and improve, expand further effort, in the realization of the normal long-term efforts, to ensure that the end of this year to obtain better results. Third, we need to accelerate the voluntary service system. To actively promote the party members and members and cadres normalization of volunteer service, do a good job in public places, window units and community volunteer service station construction, establishment of covering the whole 有低噪音、耗能低等特点。一个15平方米的房间，变频空调比定频式调温速度快6,10分钟。达到设定温度后，变频空调又能以仅为定频空调10,的功率低速运转，以调节温度细微损耗，维持恒温状态。试验显示，较之定频空调，变频空调噪音低5,6分贝，寿命长5,8年，是空调市场未来的发展方向。 变频空调是相对普通空调来讲的,普通空调的压缩电机采用交流异步电机，转速不变，50HZ时转速约为2880r/min。而变频空调是先把220V、50HZ的单相交流电转变成为三相变频交流电(25~118HZ，56~160)，供给压缩机，通过频率变化来调节压缩机转速，使制冷量连续变化，适应空调负荷的需要。 变频空调的控制原理及主要特点 变频空调与普通空调器或称定转速空调器的主要区别是前者增加了变频器。变频空调的微电脑随时收集室内环境的有关信息与内部的设定值比较，经运算处理输出控制信号。交流变频空调的工作原理是把工频交流电转换为直流电源，并把它送到功率模块(大功率晶体管开关组合);同时模块受微电脑送来的控制信号控制，输出频率可调的交变电源(合成波形近似正弦波)，使压缩机电机的转速随电源频率的变化作相应的变化，从而控制压缩机的排量，调节制冷量或制热量。直流变频空调同样把工频交流电转换为直流电源，并送至功率模块，模块同样受微电脑送来的控制信号控制，所不同的是模块输出受控的直流电源(无逆变环节)送至压缩机的直流电机，控制压缩机的排量，因此直流变频空调更省电，噪声更小。变频空调的压缩机由变频电机拖动，电源变频器输出频率变化的交流电给电动机，使电动机的转速可以根据室内制冷量的需要而连续变化，最终压缩机的制冷量达到连续变化的自动控制。为了配合制冷量的连续变化，制冷系统中采用了电子膨胀阀，由脉冲电机开关阀芯，快速控制进入蒸发器的制冷剂流量。 其主要特点为: 变频器能使压缩机电动机的转速无级连续可调，其转速是根据室内空调负荷而成比例变化的，当室内需要急速降温(或急速升温)，空调负荷加大时，压缩机转速就加快，制冷量(或制热量)就按比例增加，当达到设定温度时，随即处于低速运转维持室温基本不变。变频空调的节流是运用电子膨胀阀控制流量，它的室外微处理器可以根据设在膨胀阀进出口、压缩机中气管处的温度传感器收集的信息来控制阀门的开启度，随时改变制冷剂的流量。压缩机的转速与膨胀阀的开启度相对应，使蒸发器的能力得到最大限度的发挥。同时，由于采用了电子膨胀阀作为节流元件，化霜时不停机，利用压缩机排气的热量先向室内供热，余下热量送到室外，将换热器翅片上的霜融化。变频空调将逐步取代传统的定转速空调，成为空调控制技术发展的主流。变频技术已从交流式向直流式转化，控制技术由PWM(脉冲宽度调制)发展为PAM(脉冲振幅调制)。采用PWM控制方式的压缩机转速受到上限转速的限制，一般不超过7000转/分，而采用PAM控制方式的压缩机转速可提高1.5倍左右，这样大大提高了制冷和低温下的制冷能力。 变频空调制冷系统组成 变频空调由压缩机、蒸发器、冷凝器、电磁四通阀、电子膨胀阀、除霜阀、双毛细管等部件组成(如下图二)，工作时，空调器根据空调房间的需要，自动控制变频器输出频率较高的交流电，使电动机的转速加快，压缩机的制冷量加大，达到快速制冷或制热的目的，相反，当房间的制冷或制热量较小时，压缩机以正常速度或较低速度运转，因此，变频空调具有连续的制冷量调节，使得房间的温度波动较小。在压缩机工作过程中，微电脑系统控制变频压缩机的同时，控制电子膨胀阀的开启度，保持适当的制冷剂流量，从而直接改变蒸发器中制冷剂的流量使其状态发生改变，压缩机的转速与膨胀阀的开启度相对应，压缩机的排气量与膨胀阀的供液量相对应，使过热度不至于太大，使蒸发器的能力得到最大限度的发挥，从而使制the public to participate in, in imperceptible provided L people's cultural quality. To built use "Juxian issued on the micro channel," civilized Juxian "micro channel, Ju, networks and other mainstream network media continued to push send online is energy information, and create a good network environment. Deepen the action of the beautiful countryside civilization, to carry out a wide range of" new countryside, new life "training, give full play to the village population culture courtyard, Park Street, cultural square and other positions the role of publicity and education, promote rural way of life more civilized. This year the province's urban and rural sanitation integration of the rural masses satisfaction telephone survey, significantly improved performance in our county, respectively, than the end of last year, years to improve the 5.2,17.5 percentage points. The township streets. Relevant departments of counties units should conscientiously sum up experience, adhere to the problem oriented, people are not satisfied with the village as the focus of the work, insist on grasping both ends, with the middle, to consolidate and improve, expand further effort, in the realization of the normal long-term efforts, to ensure that the end of this year to obtain better results. Third, we need to accelerate the voluntary service system. To actively promote the party members and members and cadres normalization of volunteer service, do a good job in public places, window units and community volunteer service station construction, establishment of covering the whole 冷系统实现最高效率的控制。 变频空调的分类和区别 变频空调按照工作原理可以分为交流变频和直流变转速两类，直流变频空调只是俗称罢了。直流电路的两个电极的极性是固定不变的，电流只有一个流向，不会发生交变，根本无频率可言。谈何变频?采用的直流调速技术要远远优于调频技术，直流变转速是正确的叫法。有关DC直流变转速空调和AC变频空调的简单区别:直流调速只经过一次电压转换，所以能源损耗比调频调速要小。另外，由于这种直流电机的转子是永磁的，又省却了三相交流异步电机的转子电流消耗。所以，它从电网电源到电动机这一段的功率因数要比调频调速方式高，节省了一定的能量。 变频空调对传统空调的优缺点和特点 变频/变转速空调器相对于传统空调器来讲，主要有5大特点: ? 启动电流低，故不存在启动电流对电网和对电度表的冲击，也减少了对室内其它正在使用的家用电器的脉冲干扰影响。 ? 低温运行性能好，制暖性能明显优于传统空调器。 ? 控温波动小，避免了传统空调器采用的开/ 停运转控制方法易造成的室内温度上下波动大 、感觉不舒服的缺陷。 ? 电网电压适应性强，相比较传统空调器，有些变频空调器能在较宽电压范围内工作。有的甚至在低于187V时也能运行自如。 ? 控温速度快，能迅速将房间带入控温范围。 优点:变频空调空调采用了变频电源、变频压缩机、电子膨胀阀和微电脑技术的有机结合，使空调性能进一步提高，使用时房间温度波动小，舒适性更佳，对电源电压波动不敏感，压缩机启动后，一般不停机，制冷量在35%,117%的范围内变化，避免了普通空调的频繁开停，延长了压缩机的寿命，同时具有高效、节能的特点。 缺点:价格较贵，同普通空调相比，约高出1/3,1/4的价格，同时，由于变频空调的控制系统和变频系统较为复杂，对元器件要求较高，相比较普通空调，变频空调的故障率较高，而且，由于采用了变频技术，在变频的同时，会产生谐波污染。 变频空调使用小技巧 应根据房间的面积来确定所选变频空调P数的大小，一般1P机使用在不大于14平方米房间。尽量避免在超面积的情况下使用，不要将温度设置过低，使用时最好设置在“自动”挡，此时既舒适又节电。 the public to participate in, in imperceptible provided L people's cultural quality. To built use "Juxian issued on the micro channel," civilized Juxian "micro channel, Ju, networks and other mainstream network media continued to push send online is energy information, and create a good network environment. Deepen the action of the beautiful countryside civilization, to carry out a wide range of" new countryside, new life "training, give full play to the village population culture courtyard, Park Street, cultural square and other positions the role of publicity and education, promote rural way of life more civilized. This year the province's urban and rural sanitation integration of the rural masses satisfaction telephone survey, significantly improved performance in our county, respectively, than the end of last year, years to improve the 5.2,17.5 percentage points. The township streets. Relevant departments of counties units should conscientiously sum up experience, adhere to the problem oriented, people are not satisfied with the village as the focus of the work, insist on grasping both ends, with the middle, to consolidate and improve, expand further effort, in the realization of the normal long-term efforts, to ensure that the end of this year to obtain better results. Third, we need to accelerate the voluntary service system. To actively promote the party members and members and cadres normalization of volunteer service, do a good job in public places, window units and community volunteer service station construction, establishment of covering the whole