Circulation valve and air conditioner

A circulation valve configured to control a flow of a refrigerant, comprising:

• a flow control assembly in which a containing cavity and a plurality of sub-channels are formed, wherein the plurality of sub-channels all communicate with the containing cavity, a slide block is disposed in the containing cavity, the slide block is configured to move in the containing cavity to control the number of the sub-channels communicating with the containing cavity, and the slide block divides the containing cavity into a first containing cavity and a second containing cavity that do not communicate with each other;
• and
• a pressure control assembly, configured to control a ratio of a pressure of the first containing cavity to a pressure of the second containing cavity so as to drive the slide block to move in the containing cavity, wherein the pressure control assembly comprises
• a flow limiting member including at least a first capillary tube and a second capillary tube arranged in fluid communication with each other;
• a main conduit configured to receive the refrigerant;
• and
• a pressure-dividing conduit communicating with the second containing cavity, wherein the flow limiting member and the pressure-dividing conduit are arranged to establish a staged pressure drop between the main conduit and the second containing cavity.