Refrigerant flow path switch and air conditioner

A refrigerant flow path switch arranged between an outdoor device and each of multiple indoor devices to control a refrigerant flow, comprising:

• a housing;
• a refrigerant flow path switching circuit assembly arranged in the housing and having multiple refrigerant flow path switching circuits, each refrigerant flow path switching circuit including a high/low pressure gas pipe, a low pressure gas pipe, a high/low pressure electric valve provided at the high/low pressure gas pipe, and a low pressure electric valve provided at the low pressure gas pipe;
• a liquid pipe assembly arranged in the housing and having multiple liquid pipes connected to the multiple indoor devices;
• and
• a first divider plate provided between adjacent ones of the refrigerant flow path switching circuits in the housing and configured to divide an internal space of the housing,
• wherein a space divided by the first divider plate is in a substantially cubic shape, and the divided space is filled with a foaming agent.