CN1121596C - 具有防止空气在蒸发器和冷室间流动的机构的冰箱 - Google Patents
具有防止空气在蒸发器和冷室间流动的机构的冰箱 Download PDFInfo
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Abstract
本文公开了一种具有防止空气在蒸发器和冷藏室之间流动的关闭机构的冰箱。该关闭机构有一关闭件,可使蒸发器所在空间与冷室隔绝,还有一驱动此关闭件的电动机。除霜时和门打开时,冷空气排出口被关闭件关闭。因此,防止了因除霜加热器发生的热量而使冷藏室温度上升以及因门打开而使冷空气流失和在蒸发器上形成霜。
Description
技术领域
本发明涉及冰箱,更具体说,涉及的冰箱具有一机构,可在除霜和门打开时阻止空气在蒸发器和冷室之间流动。
背景技术
如图1所示,冰箱一般有一台压缩制冷剂的压缩机14,一个使压缩机14提供的制冷剂蒸发而产生冷空气的蒸发器7,和吹动蒸发器7所产生冷空气的风扇10。形成冷空气通道的导管件12装到冷藏室3的后部。导管件12上有多个通向冷藏室3的冷空气排出孔13。风扇10吹动的冷空气流进冷空气导管,经冷空气排出孔13流入冷藏室3。
冷藏室3由门2开闭,而冷藏室3被隔板4隔成几个间隔。在冷藏室3的上部装有遮盖蒸发器7的盖子5。蒸发器7用支架8固定在盖子5罩住的空间6中。
冰箱工作时,蒸发器7上形成霜,霜使蒸发器7的冷却效率降低。因此,冰箱装有除霜用的加热器9,当冰箱使用一段时间后,就用加热器9加热蒸发器7来完成除霜操作。
在这样的普通冰箱里,有一个问题,即除霜时加热器9产生的热量传递到冷藏室3。加热器9产生的热量主要通过和冷空气供应渠道相同的渠道传递的。就是说,热量主要通过冷空气导管和冷空气排出孔13传递到冷藏室3。传递给冷藏室3的热量使冷藏室3的冷却效率降低,贮藏在其中的食物不能保持适当状态。
此外还有一个问题,即使门2打开时,蒸发器7产生的冷空气也连续不断地送入冷藏室3,因此供应的冷空气外流,损失冷空气,还有,外界暖空气流向其环境压力比其它地方低的蒸发器7,因而蒸发器7上形成更多的霜。所以,必须更经常地进行除霜。但为了除霜,加热器9放热,所以,频繁除霜进一步降低冷却效率。
发明内容
本发明致力于克服先有技术中的上述问题,因此,本发明的目的是提供一种冰箱,在除霜期内,防止除霜的加热器所产生的热量传给冷室,并在门打开时,防止空气在冷室和蒸发器之间流动,从而提高冷却效率。
为了达到上述目的,本发明提供的冰箱包括:一形成冷室的外壳;一蒸发器,它通过蒸发制冷剂而产生送到冷室的冷空气;一加热器,用于为所述蒸发器除霜;一导管件,形成一冷空气通道,由所述蒸发器产生的冷空气流入其中,所述管件带有若干通向冷室的冷空气排出孔;一门,用于打开和关闭所述冷室;一检测所述门开闭的传感部件;一关闭机构,用于关闭冷空气排放口,使得在所述加热器除霜和/或所述检测部件测得所述门打开时,关闭所述蒸发器所在空间而与冷室隔绝,由此能够防止外面的热空气流进冷空气通道;所述的关闭机构包括:一关闭件,其上有多个与通向冷室的冷空气排出孔相对应的气孔;一电动机,用于驱动上述关闭件;以及一控制部件,用于控制所述电动机,使所述关闭件可以打开或关闭冷空气排出孔。
在此,该关闭机构包括:一关闭件,其上有多个与通向冷室的冷空气排出孔相对应的气孔;一驱动此关闭件的电动机;一控制部件,控制该电动机的转动,以利用关闭件使冷空气排出孔打开或关闭。该控制部件还控制风扇,当门打开时中止风扇运转。
关闭机构最好在加热器除霜结束后,蒸发器的温度下降到预定值以下时,解除其关闭状态。
附图说明
从以下结合附图的说明可较好理解本发明并更充分了解其目的和优点,其中:
图1是普通冰箱局部剖开的透视图;
图2是本发明所述冰箱的方块图;
图3和图4是根据本发明的用以防止热传递的冰箱关闭机构的放大侧向剖视图。
具体实施方式
下文将参照附图详细说明本发明,凡与图1所示普通冰箱相同的部件均用同一标号表示,其说明从略。
图2是根据本发明的冰箱的方块图,根据本发明的冰箱有一感温部件22,用于检测冷藏室3中的温度;一门的开闭检测部件23,用于检测门2的开闭;一微型计算机21,用于控制冰箱整体操作;一压缩机驱动部件24,用于驱动压缩机14;一风扇驱动部件25,用于驱动风扇10;一加热器驱动部件28,用于驱动加热器9;以及一关闭件检测部件26和一关闭件驱动部件27,用于驱动关闭机构30,这在以后说明。
感温部件22包括多个温度传感器(未示),装于冷藏室3内。门的开闭检测部件23通常通过按钮开关(未示)动作,该按扭开关装于冷藏室3前侧,当门2关闭时被按下,当门2打开时便松开。感温部件22、门开闭检测部件23、关闭件检测部件26所产生的信号均输入微机12。微机21根据输入的信号控制压缩机驱动部件24、风扇驱动部件25及关闭件驱动部件27动作。
冰箱的关闭机构30示于图3和4,它包括一关闭件16,它紧靠导管件12并用于开闭冷空气排出孔13;一电动机17,它由关闭件驱动部件27驱动,用于带动关闭件16;动力传动部件18,用于传递电动机17的动力。
关闭件16上有多个气孔16a。根据关闭件16的位置不同,导管件12上的冷空气排出孔13可以如图3所示打开,也可如图4所示关闭。
动力传动部件18包括凸轮和齿轮,可将电动机的转动转变成关闭件16的垂直运动。
图2所示关闭件检测部件26包括一舌簧开关20和一驱动舌簧开关动作的磁铁19。舌簧开关20装于动力传动部件18下部,磁铁19位于关闭件16下部。当关闭件16被电动机17带动而向下运动时,冷空气排出孔13关闭,如图4所示,从而磁铁19将舌簧开关20接通。微机21得知关闭件16的关闭动作已完成,便停止电动机17运转。
风扇驱动部件25及加热器驱动部件27受微机21控制,可分别驱动风扇10和加热器9工作。
下文中说明根据本发明的装有这样的关闭机构30的冰箱。
微机21根据感温部件22的信号控制压缩机驱动部件24和风扇驱动部件25。换言之,当冷藏室中的温度高于用户设定的温度时,微机21便起动压缩机14和风扇10。于是蒸发器7产生冷空气,而冷空气由风扇10送入冷藏室13。
微机21计算冰箱冷却操作的持续时间,即压缩机14运转而使蒸发器7产生冷空气的持续时间。当计算的持续时间达到预定值时,微机就控制压缩机驱动部件24和风扇驱动部件25,使压缩机14和风扇10停止运行。然后可进行蒸发器7的除霜操作。首先,微机21使驱动电动机17运行,因而关闭件16将冷空气排出孔13关闭,如图4所示。然后,微机21控制加热器驱动部件28,使加热器9工作。在蒸发器7上的霜于是被加热器9的热量去除掉。
在除霜操作进行一段时间后,微机21中止加热器9的加热操作。微机21在加热器9中止工作后通过关闭件16使冷空气排出孔13保持关闭状态预定时间。
经过一段压缩机14和加热器9中止工作的所谓中止时间后,微机21再次使压缩机14工作,蒸发器7也工作而产生冷空气。在蒸发器7工作产生冷空气一段时间后,微机21使电动机17动作,用关闭件16将冷空气出口13打开,如图3所示,在这种情形下,预定的时间就是足以使蒸发器7的温度下降到冷藏室3温度以下的时间。由于除霜时加热器9产生的热量因为关闭机构30而不能流入冷藏室3,所以冷藏室3的温度恰当保持,具体说,因为冷空气排出口13在蒸发器7的温度降到足够低后被打开,所以冷藏室3的温度得到有效保持。
在冰箱的运行时,当门2的打开情况被门开闭检测部件23测到,微机21便控制风扇驱动部件25停止风扇10的运转,并控制关闭件驱动部件27关上冷空气排出孔13。换言之,微机21通过风扇驱动部件25停止风扇10的转动,并通过关闭件驱动部件27驱动驱动电动机17。于是,关闭件16往下运动,冷空气排出孔13被关闭件16关闭,如图4所示。关闭件检测部件26测得冷空气排出孔13已关闭,于是微机21控制关闭件驱动部件27中止电动机17的运转。当门开闭检测部件23测得门2为打开状态,微机21使冷空气排出孔13保持在关闭状态。
根据这样的过程,门2打开时,蒸发器7所在的安放空间与冷藏室3隔离,所以冷空气停止向冷藏室供应,因而由冷空气泄漏引起的损失被阻止。此外,流入冷藏室3的外界暖空气也不会流向蒸发器7。所以在蒸发器7上也不会形成外界暖空气引起的霜,这样提高了蒸发器7的冷却效率,也不需经常作除霜操作。
当门2的关闭被门开闭检测部件23测得,微机21便控制关闭件驱动部件27将冷空气排出孔13打开,如图3所示,并控制风扇驱动部件25重新开始风扇10的运转。微机21根据感温部件22的检测结果再次控制压缩机驱动部件24和风扇驱动部件25,这样,冰箱的运行正常进行。
如上所述,根据本发明,除霜期间热量不会进入冷藏室,因而防止冷空气损失和因开门带来的霜。
虽然本发明已作详细描述,但显然应当明白,这只是例子,不是限制,本发明的实质和范围只由权利要求书中的条款所限定。
Claims (3)
1.一种冰箱,包括:
一形成冷室的外壳;
一蒸发器,它通过蒸发制冷剂而产生送到冷室的冷空气;
一加热器,用于为所述蒸发器除霜;
一导管件,形成一冷空气通道,由所述蒸发器产生的冷空气流入其中,所述管件带有若干通向冷室的冷空气排出孔;
一门,用于打开和关闭所述冷室;
一检测所述门开闭的传感部件;
一关闭机构,用于关闭冷空气排放口,使得在所述加热器除霜和/或所述检测部件测得所述门打开时,关闭所述蒸发器所在空间而与冷室隔绝,由此能够防止外面的热空气流进冷空气通道;
所述的关闭机构包括:
一关闭件,其上有多个与通向冷室的冷空气排出孔相对应的气孔;
一电动机,用于驱动上述关闭件;以及
一控制部件,用于控制所述电动机,使所述关闭件可以打开或关闭冷空气排出孔。
2.如权利要求1所述的冰箱,还包括风扇,用于将所述蒸发器产生的冷空气吹进冷室中;所说的控制部件对所述风扇进行控制,以便在所述门打开时,停止所述风扇的运转。
3.如权利要求1所述的冰箱,其特征在于,所述的关闭机构在所述加热器除霜完成后,所述蒸发器温度下降到预定温度以下时,解除其关闭状态。
Applications Claiming Priority (6)
Application Number | Priority Date | Filing Date | Title |
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KR18677/1997 | 1997-05-15 | ||
KR18676/1997 | 1997-05-15 | ||
KR1019970018677A KR100193709B1 (ko) | 1997-05-15 | 1997-05-15 | 냉장고의 제상운전방법 |
KR18677/97 | 1997-05-15 | ||
KR1019970018676A KR100193707B1 (ko) | 1997-05-15 | 1997-05-15 | 증발실 차단장치와 이를 갖는 냉장고의 제어방법 |
KR18676/97 | 1997-05-15 |
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CN1199849A CN1199849A (zh) | 1998-11-25 |
CN1121596C true CN1121596C (zh) | 2003-09-17 |
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US (1) | US6014865A (zh) |
EP (1) | EP0878675B1 (zh) |
JP (1) | JPH10318649A (zh) |
CN (1) | CN1121596C (zh) |
DE (1) | DE69826362T2 (zh) |
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JP2000329445A (ja) * | 1999-05-20 | 2000-11-30 | Hoshizaki Electric Co Ltd | 低温貯蔵庫 |
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- 1998-03-30 JP JP10084194A patent/JPH10318649A/ja active Pending
- 1998-04-17 CN CN98106674A patent/CN1121596C/zh not_active Expired - Fee Related
- 1998-05-07 DE DE69826362T patent/DE69826362T2/de not_active Expired - Lifetime
- 1998-05-07 EP EP98303583A patent/EP0878675B1/en not_active Expired - Lifetime
- 1998-05-12 US US09/076,133 patent/US6014865A/en not_active Expired - Lifetime
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Also Published As
Publication number | Publication date |
---|---|
DE69826362D1 (de) | 2004-10-28 |
US6014865A (en) | 2000-01-18 |
DE69826362T2 (de) | 2005-09-29 |
EP0878675B1 (en) | 2004-09-22 |
JPH10318649A (ja) | 1998-12-04 |
EP0878675A2 (en) | 1998-11-18 |
CN1199849A (zh) | 1998-11-25 |
EP0878675A3 (en) | 1999-07-14 |
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