Refrigerant distributor

Abstract

A refrigerant distributor 1 includes: a reducing portion 12 a extending straight from a downstream end of a supply path 11 b to which a refrigerant supply pipe 100 b is connected and having a diameter smaller than that of the supply path 11 b ; a refrigerant stirring chamber 22 configured to stir refrigerant from the reducing portion 12 a ; a refrigerant strike surface 24 to be struck by refrigerant, and first and second branch channels 25 and 26 communicating with the refrigerant stirring chamber 22.

1 . A refrigerant distributor configured to distribute refrigerant from a refrigerant supply pipe to first and second refrigerant outflow pipes, the refrigerant distributor comprises:
 a supply path to which the refrigerant supply pipe is connected;   a reducing portion extending straight from a downstream end of the supply path and having a diameter smaller than a diameter of the supply path;   a refrigerant stirring chamber communicating with a downstream end of the reducing portion and configured to stir refrigerant from the reducing portion;   a refrigerant strike surface facing the downstream end of the reducing portion with a predetermined interval and configured such that refrigerant from the reducing portion strikes the refrigerant strike surface;   a first branch channel having an upstream end and a downstream end, the upstream end communicating with a portion of the refrigerant stirring chamber separated from the refrigerant strike surface, the downstream end communicating with the first refrigerant outflow pipe; and   a second branch channel having an upstream end and a downstream end, the upstream end communicating with a portion of the refrigerant stirring chamber separated from the refrigerant strike surface and from the upstream end of the first branch channel, the downstream end communicating with the second refrigerant outflow pipe.   
     
     
         2 . The refrigerant distributor according to  claim 1 , wherein
 the refrigerant strike surface is disposed on an extension line of an axis of the reducing portion from the downstream end of the reducing portion, and   the upstream ends of the first branch channel and the second branch channel are open at a wall surface of the refrigerant stirring chamber between the downstream end of the reducing portion and the refrigerant strike surface.   
     
     
         3 . The refrigerant distributor according to  claim 2 , wherein
 the upstream ends of the first branch channel and the second branch channel are open at positions closer to the reducing portion than a center portion between the downstream end of the reducing portion and the refrigerant strike surface.   
     
     
         4 . The refrigerant distributor according to  claim 2 , wherein
 the upstream ends of the first branch channel and the second branch channel are disposed with an interval along the extension line on the wall surface of the refrigerant stirring chamber.   
     
     
         5 . The refrigerant distributor according to  claim 1 , further comprising:
 a first distributor component provided with the supply path and the reducing portion; and   a second distributor component provided with the refrigerant stirring chamber, the refrigerant strike surface, the first branch channel, and the second branch channel, wherein   the first distributor component is provided with the reducing portion disposed inside the first distributor component, a front end surface of the first distributor component has a projecting cylindrical portion at which the downstream end of the reducing portion is open,   the second distributor component has a fitting hole to which the projecting cylindrical portion is fitted, and   the refrigerant stirring chamber communicates with an inner side of the fitting hole.   
     
     
         6 . The refrigerant distributor according to  claim 5 , wherein
 the fitting hole has a diameter larger than a diameter of the refrigerant stirring chamber.   
     
     
         7 . The refrigerant distributor according to  claim 1 , wherein
 the supply path extends in a direction intersecting an extension line of an axis of the reducing portion.   
     
     
         8 . The refrigerant distributor according to  claim 1 , wherein
 the supply path extends coaxially with an extension line of an axis of the reducing portion.   
     
     
         9 . The refrigerant distributor according to  claim 1 , wherein
 the refrigerant strike surface is circular, and   the downstream end of the reducing portion is disposed such that an extension line of an axis of the reducing portion passes through a center of the refrigerant strike surface.   
     
     
         10 . The refrigerant distributor according to  claim 9 , wherein
 the refrigerant strike surface is substantially perpendicular to the extension line of the axis of the reducing portion.