The invention provides a stable enthalpy increasing method, which ensures the steady enthalpy increasing of the refrigeration system by controlling the valve opening and avoids the frequent opening or closing of the enthalpy increasing. The first step is to obtain the exhaust temperature and the outlet temperature during the operation of the unit, and obtain the exhaust superheat according to the exhaust temperature and the outlet temperature; the second step is to determine whether the exhaust superheat is greater than the exhaust superheat setting value; the third step is to obtain the current ambient temperature when the exhaust superheat is greater than the exhaust superheat setting value. According to the current ambient temperature, adjust the opening of the main valve and the auxiliary valve to the set opening of the valve body; Step 4, the unit according to the set opening of the valve body after a certain period of time to detect the current exhaust temperature; Step 5, determine whether the current exhaust temperature is greater than or equal to the exhaust temperature; Step 6, when the current exhaust temperature is greater than or equal to the exhaust temperature; Step 6, when the current exhaust temperature is greater than or equal to the exhaust temperature When the temperature is high, the main valve opening is gradually reduced or the auxiliary valve opening is increased until the current exhaust temperature is less than the exhaust temperature, or the main valve opening and the auxiliary valve opening reach the limit value.
【技术实现步骤摘要】
一种平稳增焓方法
本专利技术涉及空调热泵
,尤其涉及一种平稳增焓方法。
技术介绍
现有空调热泵产品,为了降低产品排气温度,提高产品在恶劣工况下运行的稳定性,通常将冷凝器出口冷媒一分为二,主流路冷媒流到蒸发器吸热蒸发,辅流路冷媒流到压缩机喷液或喷气增焓,降低压缩机排气温度。现有喷气增焓技术有将通过增焓阀进出口冷媒过热度控制辅助电子膨胀阀的打开或关闭,当该过热度大于最大设定值时,电子膨胀阀关小,当该过热度小于最小设定值时,电子膨胀阀开大,当该过热度在设定的最小值和最大值之间时,电子膨胀阀开度保持不变,直到压缩机排气降到设定值时才关闭辅助电子膨胀阀。现有喷气增焓技术还有通过排气温度和出水温度控制辅助电子膨胀阀的打开或关闭,当排气过热度大于系统最大设定值时,增焓阀打开喷气增焓,当排气过热度小于系统最小设定值时,增焓阀关闭,当排气过热度在设定的最小值和最大值之间时,增焓阀保持当前开度持续运行。而现有喷气增焓压缩机的增焓口均设在压缩机的中压腔,中压腔的压力不是一个恒定值,该压力值存在周期性波动,压力值的大小与蒸发温度和冷凝温度有关,只有辅助电子膨胀进口压力大于压缩机增焓 ...
【技术保护点】
1.一种平稳增焓方法,其特征在于,包括:步骤一,获取机组运行过程中的排气温度和出水温度,并根据所述排气温度和出水温度获取排气过热度;步骤二,判断所述排气过热度是否大于排气过热度设定值;步骤三,当所述排气过热度大于所述排气过热度设定值时,获取当前环境温度,并根据所述当前环境温度将主阀开度和辅阀开度调至阀体设定开度;步骤四,机组按所述阀体设定开度运行一定时间后,检测当前排气温度;步骤五,判断所述当前排气温度是否大于等于所述排气温度;步骤六,当所述当前排气温度大于或等于所述排气温度时,逐渐调小所述主阀开度或增大所述辅阀开度直至满足当前排气温度小于排气温度,或所述主阀开度和所述辅阀开度达到极限值。
【技术特征摘要】
1.一种平稳增焓方法,其特征在于,包括:步骤一,获取机组运行过程中的排气温度和出水温度,并根据所述排气温度和出水温度获取排气过热度;步骤二,判断所述排气过热度是否大于排气过热度设定值;步骤三,当所述排气过热度大于所述排气过热度设定值时,获取当前环境温度,并根据所述当前环境温度将主阀开度和辅阀开度调至阀体设定开度;步骤四,机组按所述阀体设定开度运行一定时间后,检测当前排气温度;步骤五,判断所述当前排气温度是否大于等于所述排气温度;步骤六,当所述当前排气温度大于或等于所述排气温度时,逐渐调小所述主阀开度或增大所述辅阀开度直至满足当前排气温度小于排气温度,或所述主阀开度和所述辅阀开度达到极限值。2.根据权利要求1所述的平稳增焓方法,其特征在于,还包括步骤七,当所述当前排气温度小于所述排气温度时,计算温降速率。3.根据权利要求2所述的平稳增焓方法,其特征在于,在所述步骤七中,所述温降速率为所述当前排气温度与所述排气温度两...
【专利技术属性】
技术研发人员:杨杰,施永康,
申请(专利权)人:广东高而美制冷设备有限公司,
类型:发明
国别省市:广东,44
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