本文關(guān)鍵詞： 冰箱 雙循環(huán) 耦合 產(chǎn)品化　出處：《浙江大學(xué)》2017年碩士論文　論文類型：學(xué)位論文

【摘要】：隨著人民生活水平的提高,消費(fèi)者購買冰箱的消費(fèi)習(xí)慣逐漸發(fā)生改變,現(xiàn)在不僅關(guān)注冰箱的能耗,還對冰箱的形式、功能等提出了一些新要求。冰箱由簡單的食品低溫貯藏箱,向精確控溫、大容量、多溫區(qū)、節(jié)能環(huán)保、保質(zhì)保鮮等高品質(zhì)的方面發(fā)展。對于每一個冰箱廠家而言,要想更快占領(lǐng)市場,獲得高額利潤,研發(fā)、設(shè)計(jì)滿足消費(fèi)者需求的節(jié)能冰箱產(chǎn)品顯得迫在眉睫。雙壓縮機(jī)雙循環(huán)系統(tǒng)節(jié)能效果佳,溫控精度高,發(fā)展?jié)摿薮蟆５怯捎谙到y(tǒng)初始成本較高,而且采用的小型壓縮機(jī)效率低,影響了循環(huán)效率,限制了其在市場上的應(yīng)用。將冷變換器技術(shù)應(yīng)用于雙壓縮機(jī)雙循環(huán)系統(tǒng)中,提出了耦合雙循環(huán)系統(tǒng)。新系統(tǒng)在保證溫控精度的基礎(chǔ)上,進(jìn)一步提高了系統(tǒng)的性能系數(shù),可以極大地推動雙壓縮機(jī)系統(tǒng)在市場上的應(yīng)用。本文在前人的研究基礎(chǔ)上研制了耦合雙循環(huán)冰箱樣機(jī),并從理論分析、模擬計(jì)算以及實(shí)驗(yàn)測試等方面對冰箱樣機(jī)進(jìn)行了系統(tǒng)研究。詳細(xì)研究成果如下:1.對雙壓縮機(jī)雙循環(huán)系統(tǒng)和常規(guī)單循環(huán)冰箱系統(tǒng)進(jìn)行了性能系數(shù)的理論分析和計(jì)算,結(jié)果表明雙壓縮機(jī)雙循環(huán)系統(tǒng)比傳統(tǒng)的單循環(huán)系統(tǒng)性能系數(shù)高,耦合雙循環(huán)系統(tǒng)與普通雙壓縮機(jī)系統(tǒng)相比更具節(jié)能潛力;2.設(shè)計(jì)了冰箱的整體結(jié)構(gòu)和布置方式,完成樣機(jī)熱負(fù)荷計(jì)算和系統(tǒng)的熱力計(jì)算,并據(jù)此對樣機(jī)的各部件進(jìn)行了選型和設(shè)計(jì),研制了耦合雙循環(huán)系統(tǒng)冰箱樣機(jī);3.提出了 一種適用于耦合雙循環(huán)冰箱的溫度及耦合運(yùn)行控制策略,通過計(jì)算機(jī)模擬計(jì)算和實(shí)驗(yàn)測試的方式分析并驗(yàn)證了溫度及耦合運(yùn)行控制策略的控制效果,結(jié)果表明溫度及耦合運(yùn)行控制策略能夠?qū)崿F(xiàn)間室溫度和系統(tǒng)耦合運(yùn)行的協(xié)同控制;4.通過對兩臺典型樣機(jī)的對比實(shí)驗(yàn)研究,分析了系統(tǒng)單獨(dú)運(yùn)行狀態(tài)和耦合運(yùn)行狀態(tài)對冷藏子系統(tǒng)和冷凍子系統(tǒng)運(yùn)行參數(shù)的影響;5.對樣機(jī)進(jìn)行了標(biāo)準(zhǔn)耗電量測試,得到耦合雙循環(huán)冰箱樣機(jī)的標(biāo)準(zhǔn)耗電量為1.15kW-h/24h,達(dá)到1級能效標(biāo)準(zhǔn),耗電量明顯低于間型號早循環(huán)系統(tǒng)冰箱。最后,簡要闡述了已有研究工作中的不足之處和進(jìn)一步研究的設(shè)想。
[Abstract]:With the improvement of people's living standards, consumers' consumption habits of buying refrigerators have gradually changed. Now they not only pay attention to the energy consumption of refrigerators, but also put forward some new requirements on the form and function of refrigerators. The refrigerators are made up of simple food cryogenic storage boxes. To precise temperature control, large capacity, multi-temperature area, energy conservation, environmental protection, quality preservation and other high-quality aspects. For every refrigerator manufacturer, want to occupy the market faster, obtain high profits, research and development, It is urgent to design energy-saving refrigerator products to meet the needs of consumers. The dual cycle system of double compressors has good energy-saving effect, high temperature control precision and great potential for development. However, due to the high initial cost of the system, Moreover, the low efficiency of the small compressor, which affects the circulation efficiency and limits its application in the market, applies the cold converter technology to the double cycle system of double compressors. A coupled double circulatory system is proposed. The new system can further improve the performance coefficient of the system on the basis of ensuring the precision of temperature control. It can greatly promote the application of double compressor system in the market. Based on the previous research, this paper developed a prototype of coupled double cycle refrigerator, and analyzed it theoretically. The prototype of the refrigerator is studied systematically in the aspects of simulation calculation and experimental test. The detailed research results are as follows: 1. The theoretical analysis and calculation of the performance coefficient of the double-cycle system of double compressor and the system of conventional single-cycle refrigerator are carried out. The results show that the performance coefficient of double cycle system of double compressor is higher than that of traditional single cycle system, and the energy saving potential of coupled double cycle system is higher than that of common double compressor system. 2. The whole structure and arrangement of refrigerator are designed. The thermal load calculation of the prototype and the thermodynamic calculation of the system are completed, and the various components of the prototype are selected and designed accordingly. A prototype of coupled double circulatory system refrigerator is developed. A control strategy of temperature and coupling operation for coupled double cycle refrigerator is proposed. The control effect of temperature and coupling operation control strategy is analyzed and verified by computer simulation and experimental test. The results show that the temperature and coupled operation control strategy can realize the cooperative control between the temperature of the interchamber and the coupled operation of the system. This paper analyzes the influence of the operating state of the system alone and the coupling operation state on the operating parameters of the refrigeration subsystem and the refrigeration subsystem. 5. The standard power consumption of the prototype is tested. The standard power consumption of the coupled dual-cycle refrigerator prototype is 1.15kW-h / 24h, which is up to the first grade energy efficiency standard, and the power consumption is obviously lower than that of the other type of early-cycle refrigerator. Finally, the shortcomings of the existing research work and the assumption of further research are briefly described.
【學(xué)位授予單位】：浙江大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2017
【分類號】：TB657.4

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