本文選題：風(fēng)冷冰箱 + 并聯(lián)雙循環(huán)　； 參考：《哈爾濱工業(yè)大學(xué)學(xué)報(bào)》2017年01期

【摘要】：針對(duì)并聯(lián)雙循環(huán)風(fēng)冷冰箱冷藏室、冷凍室不能同步降溫,導(dǎo)致冷凍室回溫時(shí)間長(zhǎng)的問(wèn)題,實(shí)驗(yàn)研究了開機(jī)后冷藏降溫過(guò)程中兼顧冷凍降溫的"2 min冷藏+1 min冷凍"短周期切換控制特性.結(jié)果表明:開機(jī)后,停機(jī)時(shí)積聚在冷凍蒸發(fā)器中的制冷劑逐漸向冷藏蒸發(fā)器遷移,前6個(gè)短周期內(nèi),遷移造成的冷藏蒸發(fā)器制冷量損失由33.9%降至5.2%,之后維持不變直至冷藏運(yùn)行結(jié)束.冷凍室感溫包溫度前6個(gè)短周期內(nèi)從-16.5℃降至-17.8℃,而之后5個(gè)短周期僅降低約0.3℃.采用短周期切換控制,冷藏降溫階段可兼顧冷凍室降溫,且在冷凍降溫時(shí)間的縮短與冷藏運(yùn)行時(shí)間的延長(zhǎng)之間存在使壓縮機(jī)運(yùn)行時(shí)間最短的最優(yōu)值.
[Abstract]:In view of the cold storage room of the air-cooled refrigerator with parallel double circulation, the freezer can not be cooled synchronously, which leads to the problem that the reheating time of the freezer is long. The short-period switching control of "2 min refrigerated 1 min" in the process of cooling and cooling after boot refrigeration was studied experimentally. The results show that the refrigerant accumulated in the refrigerated evaporator gradually migrate to the refrigerated evaporator after shutdown, and the first six short periods of the refrigerant transfer to the refrigerated evaporator. The refrigerating capacity loss of refrigerated evaporator decreased from 33.9% to 5.2%, and remained unchanged until the end of refrigerating operation. In the first 6 short periods, the temperature of the temperature package in the freezer decreased from -16.5 鈩，

本文編號(hào)：1962696