CN1138958C - 具有用于气幕流的双重气流速度产生装置的电冰箱 - Google Patents

具有用于气幕流的双重气流速度产生装置的电冰箱 Download PDF

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CN1138958C
CN1138958C CNB988142899A CN98814289A CN1138958C CN 1138958 C CN1138958 C CN 1138958C CN B988142899 A CNB988142899 A CN B988142899A CN 98814289 A CN98814289 A CN 98814289A CN 1138958 C CN1138958 C CN 1138958C
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郑宰旭
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Abstract

一种用于气幕流的具有双重速度产生装置的电冰箱，所述的电冰箱包括：一个冷空气供给通道(400)，通过该通道在一个风扇(44)的驱动下，将冷空气输送到食物储藏室(200)的一个上部开口，和一个双重速度产生装置(420，420U，420L，430，431)，该装置设置在冷空气供给通道(400)的一个出口(43)处，用于将从该出口排出的气幕流变成双重的空气速度，因此将远离食物储藏室的气幕流的速度变得比紧邻食物储藏室的要低。

Description

具有用于气幕流的双重气流速度产生装置的电冰箱
技术领域
本发明涉及一种用于气幕流的电冰箱，尤其是，本发明涉及一种用于气幕流的、具有双重空气速度产生装置的电冰箱，从而使远离食物储藏室的气幕流的速度比靠近食物储藏室的要低。
背景技术
如图6和7所示，传统的电冰箱具有一个冷冻室1和冷藏室2。压缩机10安装在电冰箱的后下方，蒸发器20安装在冷冻室1的后部。通过压缩机10压缩制冷剂，然后已压缩的制冷剂流向蒸发器20，这样，通过制冷剂的蒸发来冷却流通的空气。
用于吹动冷空气的风扇23，24安装在冷冻室1的后方，并且将蒸发器20产生的冷空气经由下面要说明的每一个冷空气通道，供给到冷冻室1和冷藏室2中。
冷空气通道25位于冷冻室1的后部，通过风扇23的转动迫使冷空气排入到冷空气通道25，并进而通过位于通道外壳25C上的多个开口27排入到冷冻室1，该通道外壳位于冷冻室1和蒸发器20之间。
另一个冷空气通道26设置在与冷冻室1相对的冷空气通道25的后面。将通道26分成两个通道26A，26B，最好是，每个通道沿着冷藏室2的后壁向下延伸。在另一个风扇24的驱动下，将冷空气排入到每个通道26A，26B，并进而通过位于通道外壳26C上的多个开口28排入到冷藏室2。最好是，开设在相应通道26A，26B上的另一些开口29是位于冷藏室2的每一个内侧壁上的。
一冷空气供给通道42位于将冷冻室1和冷藏室2隔开的分隔壁41的下面，该通道从冷藏室2的后面延伸到冷藏室2的前面。用来放置气幕风扇44的小室42a位于通道42紧临冷藏室2的后部的一端，而一空气排放口43位于与小室42a相对的通道42另一端。该空气排放口43最好沿着位于冷藏室2的可接近的开口2C的上部的整个宽度上设置。
在小室42a中安装着用于产生气幕流的风扇44，从而能使空气平稳地流动。最好是，风扇44的长度与小室42a的内侧宽度一致，而且该风扇是靠另一个马达46来驱动的。
因为通道42的上表面是水平地延伸的，并且通道42的下表面朝空气排放口43是倾斜的，所以朝向开口43的通道42的横截面面积是越来越小的。沿着靠近空气通道42的内表面的上部，冷空气流的速度比沿着靠近空气通道42的内表面的下部的要快。通道42的弯曲排放口43的前端是笔直的，这导致排出的冷空气能沿直线流动。
一个空气收集通道47沿着冷藏室2的后部中心区向下延伸，而且从该空气收集通道47上开设出的多个空气收集开口48，48A，48B是位于通道外壳47C上的。
多个搁板49，49A，49B将电冰箱的冷藏室分隔开，为了加强有效空气聚集，该搁板的上表面最好是平面形状。位于冷藏室2的最高处的开口48的横截面面积比位于冷藏室2的中间高度处的开口48A的要小，并且开口48A的横截面面积比位于冷藏室2的较低处的开口48B的要小。根据储存食物的体积确定每个开口48，48A，48B的高度，但是每个开口48，48A，48B最好设置在每个搁板49，49A，49B上方大约中间的位置上。进而，每个开口48，48A，48B是具有长的纵向边的矩形或是椭圆形。
下面说明上述结构的电冰箱的工作过程。当门(没有画出)打开时，风扇44开始工作，同时风扇24停止工作。在风扇44的驱动下通过开口43将冷空气排出，从而形成冷的气幕。在冷藏室2中循环的冷空气不会从冷藏室2逃逸出来，从而保持冷藏室的不变的温度。
然而，即使从开口43中排出的冷空气在冷藏室的外层和内层之间具有同样低的温度，但是当气流向下流和外界温度的空气相接触时，外层的气幕温度会较大地升高。因此，气幕流具有高的温度并且空气进入到了冷藏室中。高温空气进而流到每个空气收集开口中，并且在冷藏室中再循环。这样，存在一个问题，即冷藏室的温度上升，使电冰箱的制冷能力降低了。
发明内容
本发明的一个目的是为了克服上述问题而提供一种电冰箱，该电冰箱具有用于气幕流的双重速度产生装置。
本发明的另一个目的是提供一种电冰箱，该电冰箱具有用于气幕流的双重速度产生装置，通过该装置的气幕流具有双重的速度，因此导致电冰箱的整体功效的提高。
为了实现本发明的上述目的，本发明提供一种具有用于气幕流的双重速度产生装置的电冰箱，所述的电冰箱包括：用于产生冷空气的蒸发器；冷空气供给通道，通过该通道在一个风扇的驱动下，将冷空气输送到食物储藏室的一个进入开口的上部；空气收集通道，通过该通道，从进入开口的上部向进入开口的下部排出的并且在食物储藏室中循环的空气流入到蒸发器中；一个分隔板在冷空气供给通道里纵向地延伸，并且将该冷空气供给通道分隔成上部的空气通道和下部的空气通道；以及安装在上部冷空气通道出口处的上部蜂窝结构，和安装在下部冷空气通道出口处的下部蜂窝结构。
进而，上部空气通道的横截面比下部空气通道的要小。
而且，上部蜂窝结构的每个孔的尺寸比下部蜂窝结构的要大。
附图说明
图1是本发明具有双重空气速度产生装置的电冰箱的侧向垂直面剖视图；
图2是图1的双重空气速度产生装置的放大的侧向剖视图；
图3是图2中空气通道的蜂窝结构的放大的前视图；
图4是沿图1的A-A线的气幕流的速度分布的简要视图；
图5是沿图1的A-A线的气幕流的温度分布的简要视图；
图6是现有技术中具有气幕流的电冰箱的侧向垂直面剖视图；以及
图7是图6中具有气幕流的电冰箱的前视图。
具体实施方式
图1，2和3示出了根据本发明具有用于气幕流的双重空气速度产生装置的电冰箱。此处，将和现有技术中的部件一样的部件标记上同样的数字。这样，对这些部件的说明从略。
电冰箱具有一个冷冻室100和一个冷藏室200。压缩机10安装在电冰箱的后下方，蒸发器20安装在冷冻室100的后部。通过压缩机10压缩制冷剂，然后已压缩的制冷剂流向蒸发器20，这样，通过制冷剂的蒸发来冷却流通的空气。
用于循环冷空气的风扇24(其中一个没有在附图中画出)安装在冷冻室100的后方，并且经过蒸发器20冷却的空气经由下面要说明的每个冷空气通道供给到冷冻室100和冷藏室200。
冷空气通道(没有画出)位于冷冻室100的后部，通过风扇的转动促使冷空气排入到冷空气通道，并进而通过位于通道外壳25C上的多个开口27排入到冷冻室100，该通道外壳位于冷冻室100和蒸发器20之间。
另一个冷空气通道26安装在与冷冻室100相对的冷空气通道的后面。将通道26分成两个通道(没有画出)。最好是，每个通道沿着冷藏室200的每个后壁向下延伸。在另一个风扇24的驱动下，将冷空气排入到每个通道里，并进而通过位于一个通道外壳(没有画出)上的多个开口(没有画出)排入到冷藏室200。最好是，开设在相应通道(没有画出)上的另一些开口29是位于冷藏室200的每一个内侧壁上的。
一冷空气供给通道400位于将冷冻室100和冷藏室200隔开的分隔壁41的下面，该通道从冷藏室200的后面延伸到冷藏室200的前面。用来放置气幕风扇44的小室400a位于通道400紧临冷藏室200的后部的一端，而一空气排放口43位于与小室400a相对的通道400的另一端。该空气排放口43最好是沿着位于冷藏室200的可接近开口200C的上部的整个宽度上设置。
在小室400a中安装着用于产生气幕流的风扇44，从而能使空气平稳地流动。最好是，风扇44的长度与小室400a的内侧宽度一致，而且该风扇是靠另一个马达(没有画出)来驱动的。
通道400设有一个纵向延伸的分隔板420，将该通道分隔成上部空气通道420U和下部空气通道420L。上部空气通道420U的横截面比下部空气通道420L的要小。因为通道400的上表面是平直地延伸的，而通道400的下表面向空气排放口43倾斜，所以通道400的总的横截面朝开口43是逐渐减小的。
将一个上部蜂窝结构430安装在上部空气通道420U的一个出口处，并将一个下部蜂窝结构431安装在下部空气通道420L的一个出口处。通过这两个通道，冷空气流向进入开口200C的下部，以作为气幕流。
上部蜂窝结构430的每个孔430H的尺寸要比下部蜂窝结构431的每个孔431H的尺寸要大。这样，上部蜂窝结构430的孔430H的总数要比下部蜂窝结构431的孔431H的总数要少。
为了避免重复，省略了对空气收集通道的详细说明。
下面说明上述结构的电冰箱的工作过程。当门(没有画出)打开时，风扇44开始工作，同时风扇24停止工作。在风扇44的驱动下，冷空气通过开口43沿着通道400流动。沿着上面空气通道420U流动的空气进入到上部蜂窝结构430，而沿着下面空气通道420L流动的空气进入到下部蜂窝结构431。经过两个蜂窝结构430，431的空气向下流到冷藏室200的下部，并且形成如图1所示的气幕流。将流经上部蜂窝结构430的空气层或者靠近冷藏室200的外层称为一个外部空气流500，将流经下部蜂窝结构431的空气层或者靠近冷藏室200的内层称为一个内部空气流510。
如图4所示，内部空气流510的速度变得比外部空气流500的速度要相对地快些。这种情况出现是因为下部蜂窝结构孔431H的尺寸比上部蜂窝结构孔430H的尺寸要小。如图5所示，由于外部空气流500向下流动会与外界温度空气相接触，所以外部空气流500的温度逐渐地增加了。
因为外部空气流500的速度具有比内部空气流510更快的速度，所以外部空气流500的压力要比内部空气流510相对大一些，而且也比流经现有的空气供给通道42的气幕流的压力要大(参考图6)。
外部空气流500对环境空气的排斥力要比现有的气幕流的相对大一些。环境空气和外部空气流的接触受到阻碍，这样，防止气幕流的温度显著地增加。从而，内部空气流510保持了比较低的温度并且流入到冷藏室里。冷空气还流到每一个空气收集开口中，并且在冷藏室里再循环，因此在冷藏室里保持住了恒定的低温。
根据本发明，冷空气通过空气供给通道输送到冷藏室的进入开口的上部。当流过空气供给通道时，冷空气被分成两个空气流，一个空气流流过宽通孔的蜂窝结构，另一个流过窄通孔的蜂窝结构。因此，流经各自蜂窝结构的每个空气流的速度是不同的。具有较慢速度和高的压力的外部的气幕层流排斥环境空气，这样内部的气幕层流保持低的温度，从而提高了电冰箱的整体功效。

Claims (3)

1.一种具有用于气幕流的双重空气速度产生装置的电冰箱，其特征在于，所述电冰箱包括：
蒸发器，用于产生冷空气；
冷空气供给通道，在风扇的驱动下，冷空气通过该通道被输送到食物储藏室的进入开口的上部；
空气收集通道，从进入开口的上部朝向进入开口的下部排放并且在食物储藏室中循环的空气，通过该通道流到蒸发器；
分隔板，其在冷空气供给通道内纵向地延伸，并且将该冷空气供给通道分隔成上部空气通道和下部空气通道；以及
上部蜂窝结构和下部蜂窝结构，该上部蜂窝结构安装在上部空气通道的出口处，该下部蜂窝结构安装在下部空气通道的出口处。
2.根据权利要求1所述的具有用于气幕流的双重空气速度产生装置的电冰箱，其特征在于，上部空气通道的横截面要比下部空气通道的横截面小。
3.根据权利要求2所述的具有用于气幕流的双重空气速度产生装置的电冰箱，其特征在于，上部蜂窝结构的各个孔的尺寸要比下部蜂窝结构的各个孔的尺寸大。
CNB988142899A 1998-10-30 1998-12-14 具有用于气幕流的双重气流速度产生装置的电冰箱 Expired - Fee Related CN1138958C (zh)

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