Multi-compartment indirect cooling household refrigerators (MIRs) have the advantage of multiple compartments with various storage temperatures, e.g. a freezing compartment (FC), a refrigerating compartment (RC) and a variable temperature compartment (VC). MIRs have difficulty in precise control of the temperatures of all compartments because they fail to independently deliver cooling capacities to each compartment. This paper presents a method to independently deliver cooling capacities by installing a novel air distributor in a MIR and changing the position of air supply dampers in this air distributor. The design method for the geometries of the novel air distributor, including the size and the opening angle of the damper as well as the size of the air openings, is detailed illustrated. To validate the proposed method, the novel air distributor was installed in a typical MIR, and the temperatures of all compartments of the MIR before and after the installation of the novel air distributor were measured and compared. It is found that the dynamic fluctuations of the temperatures of the FC in the MIR without the novel air distributor excess the preset range at the working conditions of only the RC or the VC need to be cooled, while those of the MIR with the novel air distributor are within the preset range at all working conditions. These results confirm the effectiveness of the proposed control method for precise temperature control.

多隔间间接冷却家用冰箱（MIR）的优点是具有不同存储温度的多个隔室，例如冷冻室（FC），冷藏室（RC）和恒温室（VC）。MIR难以精确控制所有车厢的温度，因为它们无法独立地向每个车厢提供冷却能力。本文提出了一种通过在MIR中安装新型空气分配器并更改空气分配风门在该空气分配器中的位置来独立提供冷却能力的方法。详细说明了新型空气分配器的几何形状的设计方法，包括风门的尺寸和开度以及空气孔的尺寸。为了验证提出的方法，将新型空气分配器安装在典型的MIR中，并在安装新型空气分配器之前和之后测量和比较MIR所有隔间的温度。结果发现，在没有新型空气分配器的情况下，MIR中FC的温度动态波动超出了预设范围，只有RC或VC的工作条件需要冷却，而具有新型空气的MIR中的FC在所有工作条件下，分配器均处于预设范围内。这些结果证实了所提出的用于精确温度控制的控制方法的有效性。结果发现，在没有新型空气分配器的情况下，MIR中FC的温度动态波动超出了预设范围，只有RC或VC的工作条件需要冷却，而具有新型空气的MIR中的FC在所有工作条件下，分配器均处于预设范围内。这些结果证实了所提出的用于精确温度控制的控制方法的有效性。结果发现，在没有新型空气分配器的情况下，MIR中FC的温度动态波动超出了预设范围，只有RC或VC的工作条件需要冷却，而具有新型空气的MIR中的FC在所有工作条件下，分配器均处于预设范围内。这些结果证实了所提出的控制方法对精确温度控制的有效性。