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盒式氣調(diào)包裝機(jī)氣體置換結(jié)構(gòu)內(nèi)部3-D流場的模
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Analysis of 3-D Flow Field within Gas Replacement Devices of Modified Atmosphere Packaging Machine with Trays
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    摘要:

    氣體置換裝置是氣調(diào)包裝機(jī)的核心部件,。以盒式氣調(diào)包裝機(jī)中2種典型氣體置換裝置結(jié)構(gòu)為研究對象,，建立了2種氣體置換結(jié)構(gòu)的物理模型和包裝盒內(nèi)氣體流場分析數(shù)學(xué)模型,，應(yīng)用Fluent軟件對包裝盒內(nèi)的氣體流場進(jìn)行三維數(shù)值模擬,。建立了保證氣體置換質(zhì)量的包裝盒內(nèi)三維流場評價指標(biāo)，分析了氣體置換裝置充,、排氣孔的結(jié)構(gòu)布置與排列方式對氣體置換性能的影響,。結(jié)果表明，與傳統(tǒng)結(jié)構(gòu)相比,，新設(shè)計結(jié)構(gòu)在氣體置換率,、流場靜壓分布、氣體平均流速以及耗氣量等方面均具有更佳的性能,。

    Abstract:

    The gas replacement device is the key part of the modified atmosphere packaging machine. The structures of two typical kinds of gas replacement devices with trays were analyzed. The mathematical model of 3-D turbulent gas flow field within the tray was proposed, and then the numerical simulation of the gas-flow field was conducted by means of the Fluent software. The distributions of the flow field within trays for two kinds of gas replacement devices were obtained. The evaluation indexes of the flow field for ensuring the quality of gas replacement within tray were established. Effect of the arrangement mode of gas inlet and outlet on properties of gas replacement was analyzed. The results show that, compared to the typical traditional structure, the new gas replacement devices has better performance in replacement ratio of gas, static pressure distribution, average velocity of flow, and gas consumption. 

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盧立新,王杰.盒式氣調(diào)包裝機(jī)氣體置換結(jié)構(gòu)內(nèi)部3-D流場的模[J].農(nóng)業(yè)機(jī)械學(xué)報,2009,40(7):119-123. Analysis of 3-D Flow Field within Gas Replacement Devices of Modified Atmosphere Packaging Machine with Trays[J]. Transactions of the Chinese Society for Agricultural Machinery,2009,40(7):119-123.

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