Liquid separator for refrigeration and air conditioner

Abstract

A liquid separator for refrigeration and an air conditioner. The liquid separator for refrigeration includes a liquid separator body and a mixing and flow-guiding plate. The liquid separator body includes a liquid separator inner chamber. The plate is arranged in the liquid separator inner chamber, where a recessed chamber portion is arranged on the plate, a first mixing chamber is formed in the recessed chamber portion, a second mixing chamber is formed between the plate and a liquid outlet end of the liquid separator body, and throttling flow-guiding holes in communication with the first mixing chamber and the second mixing chamber are evenly distributed along a circumferential direction of the plate; and the recessed chamber portion allows two phases of refrigerants entering the first mixing chamber to be mixed and flow back along the first mixing chamber, and then flow to the second mixing chamber through the throttling flow-guiding holes.

1 . A liquid separator for refrigeration, comprising:
 a liquid separator body having a liquid separator inner chamber; and   a mixing and flow-guiding plate arranged in the liquid separator inner chamber, wherein a recessed chamber portion is arranged on the mixing and flow-guiding plate, a first mixing chamber is formed in the recessed chamber portion, a second mixing chamber is formed between the mixing and flow-guiding plate and a liquid outlet end of the liquid separator body, and a plurality of throttling flow-guiding holes in communication with the first mixing chamber and the second mixing chamber are evenly distributed along a circumferential direction of the mixing and flow-guiding plate; and the recessed chamber portion allows two phases of refrigerants entering the first mixing chamber to be mixed and then flow back along the first mixing chamber, and then flow to the second mixing chamber through the throttling flow-guiding holes.   
     
     
         2 . The liquid separator for refrigeration according to  claim 1 , wherein the plurality of throttling flow-guiding holes evenly distributed along the circumferential direction of the mixing and flow-guiding plate are recess holes, through holes, or a combination of the recess holes and the through holes; and the recess holes are formed by being enclosed by openings of two curved stretching portions that are located at both sides of the mixing and flow-guiding plate and are centrally symmetric. 
     
     
         3 . The liquid separator for refrigeration according to  claim 1 , wherein the mixing and flow-guiding plate comprises a plate body and the recessed chamber portion that is formed in a center of the plate body and extends toward the liquid outlet end of the liquid separator body, and a transmission channel is formed between the plate body and a liquid inlet end of the liquid separator body. 
     
     
         4 . The liquid separator for refrigeration according to  claim 1 , further comprising a liquid inlet pipe, wherein the liquid inlet pipe is seal-welded to a liquid inlet pipe hole of the liquid separator body. 
     
     
         5 . The liquid separator for refrigeration according to  claim 4 , wherein an output end of the liquid inlet pipe extends into the first mixing chamber, and a distance between an output end face of the liquid inlet pipe and an opening end face of the first mixing chamber is less than or equal to 1 times an outer diameter of the liquid inlet pipe. 
     
     
         6 . The liquid separator for refrigeration according to  claim 4 , wherein an output end face of the liquid inlet pipe is located outside the first mixing chamber, and a distance between an output end face of the liquid inlet pipe and an opening end face of the first mixing chamber is less than or equal to 0.8 times an outer diameter of the liquid inlet pipe. 
     
     
         7 . The liquid separator for refrigeration according to  claim 4 , wherein a flanged portion facing an interior or exterior of the liquid separator body is arranged in a circumferential direction of the liquid inlet pipe hole, and the liquid inlet pipe is internally or externally sleeved on the flanged portion and seal-welded with the flanged portion. 
     
     
         8 . The liquid separator for refrigeration according to  claim 4 , wherein when the liquid inlet pipe is a stainless steel pipe or a carbon steel pipe, the liquid separator for refrigeration further comprises a copper sleeve connecting pipe, wherein the copper sleeve connecting pipe is internally sleeved on an end portion of the liquid inlet pipe, and a pipeline copper pipe is internally sleeved on the copper sleeve connecting pipe; and a length of an overlap region where the pipeline copper pipe, the copper sleeve connecting pipe, and the liquid inlet pipe are sleeved is L 11 , a sleeving length of the pipeline copper pipe and the copper sleeve connecting pipe is L 01 , a sleeving length of the copper sleeve connecting pipe and the liquid inlet pipe is L 21 , and 0.2 L 01 ≤L 11 ≤0.8 L 01  and 0.2 L 21 ≤L 11 ≤0.8 L 21  are satisfied. 
     
     
         9 . The liquid separator for refrigeration according to  claim 4 , wherein when the liquid inlet pipe is a copper pipe and the liquid separator body is made of stainless steel, the liquid inlet pipe is internally sleeved on a flanged portion in a circumferential direction of the liquid inlet pipe hole, and a pipeline copper pipe is internally sleeved on the liquid inlet pipe; and a length of an overlap region where the pipeline copper pipe, the liquid inlet pipe, and the flanged portion are sleeved is L 11 ′, a sleeving length of the pipeline copper pipe and the liquid inlet pipe is L 01 ′, a sleeving length of the liquid inlet pipe and the flanged portion is L 21 ′, and 0.2 L 01 ′≤L 11 ′≤0.8 L 01 ′ and 0.2 L 21 ′≤L 11 ′≤0.8 L 21 ′ are satisfied. 
     
     
         10 . The liquid separator for refrigeration according to  claim 1 , wherein the liquid separator body comprises:
 a cylinder body wherein the cylinder body is integrally formed and has a single open end, and a bottom of the cylinder body is provided with a plurality of shunt branch pipe holes;   at least one lining plate, arranged on an inner bottom of the cylinder body, wherein each lining plate is provided with a plurality of lining plate holes corresponding to the plurality of shunt branch pipe holes;   a plurality of shunt branch pipes, respectively extending into the shunt branch pipe holes, wherein extension ends of the shunt branch pipes extend into corresponding lining plate holes, and each of the shunt branch pipes is seal-welded into a corresponding shunt branch pipe hole and a corresponding lining plate hole; and   an end cover, covering the open end of the cylinder body, wherein the end cover is seal-welded with the cylinder body to form the liquid separator inner chamber, the end cover is provided with a liquid inlet pipe hole, and the liquid inlet pipe hole directly faces the first mixing chamber.   
     
     
         11 . The liquid separator for refrigeration according to  claim 10 , wherein each ling plate is further provided with a through hole, and the through hole is located within a circumferential center line formed by the plurality of lining plate holes; and when multiple lining plates are provided, through holes on the multiple lining plates are correspondingly overlapped to form a concave cavity. 
     
     
         12 . The liquid separator for refrigeration according to  claim 1 , wherein the liquid separator body comprises:
 a cylinder body, wherein the cylinder body is integrally formed and has two open ends, a liquid inlet end of the cylinder body is provided with a liquid inlet pipe hole, and the liquid inlet pipe hole directly faces the first mixing chamber;   at least two lining plates, wherein the at least two lining plates are seal-welded to a liquid outlet end of the cylinder body after overlapped, the liquid separator inner chamber is formed between the cylinder body and the lining plates, and each of the lining plates is provided with a plurality of lining plate holes; and after the at least two lining plates are overlapped, corresponding lining plate holes are overlapped to form overlapping holes; and   a plurality of shunt branch pipes, respectively extending into and seal-welded to the respective overlapping holes.   
     
     
         13 . The liquid separator for refrigeration according to  claim 12 , wherein an interior lining plate is provided with a through hole, and the through hole is located in a circumferential center line formed by the plurality of lining plate holes; and when multiple interior lining plates are provided, through holes on the multiple interior lining plates are overlapped to form a concave cavity. 
     
     
         14 . The liquid separator for refrigeration according to  claim 10 , wherein an inner side wall of the cylinder body is provided with a limiting fixing portion protruding toward an interior of the cylinder body, the limiting fixing portion is configured to fix the lining plates into the cylinder body, and the limiting fixing portion comprises a plurality of dot-like limiting fixing portions, a plurality of arc limiting fixing portions or annular limiting fixing portions; or at least one lining plate is interference-fitted in the cylinder body. 
     
     
         15 . The liquid separator for refrigeration according to  claim 10 , wherein a cross-sectional shape of the cylinder body is any one of a circle, a square, or an ellipse, and cross-sectional shapes of the lining plates and the mixing and flow-guiding plate match with the cross-sectional shape of the cylinder body. 
     
     
         16 . The liquid separator for refrigeration according to  claim 10 , wherein when the plurality of shunt branch pipes and the plurality of lining plates are respectively made of stainless steel or carbon steel, the liquid separator for refrigeration further comprises a plurality of copper sleeve connecting pipes, the plurality of copper sleeve connecting pipes are internally sleeved on end portions of the shunt branch pipes, respectively; a plurality of pipeline copper pipes are internally sleeved on the copper sleeve connecting pipes, respectively; and a length of an overlap region where a corresponding pipeline copper pipe, a corresponding copper sleeve connecting pipe, and a corresponding shunt branch pipe are sleeved is L 12 , a sleeving length of the pipeline copper pipe and the copper sleeve connecting pipe is L 02 , a sleeving length of the copper sleeve connecting pipe and the shunt branch pipe is L 22 , and 0.2 L 02 ≤L 12 ≤0.8 L 02  and 0.2 L 22 ≤L 12 ≤0.8 L 22  are satisfied. 
     
     
         17 . The liquid separator for refrigeration according to  claim 10 , wherein when the plurality of shunt branch pipes are copper pipes and the cylinder body is made of stainless steel, each of the shunt branch pipes is internally sleeved into an overlapping hole formed by overlapping a corresponding shunt branch pipe hole and at least one of the lining plate holes; or each of the shunt branch pipes is internally sleeved into an overlapping hole formed by overlapping corresponding lining plate holes after at least two lining plates made of stainless steel are overlapped; the plurality of pipeline copper pipes are internally sleeved on the shunt branch pipes, respectively; a length of an overlap region where each of the pipeline copper pipes, a corresponding shunt branch pipe, and the overlapping hole are sleeved is L 12 ′, a sleeving length of the pipeline copper pipe and the shunt branch pipe is L 02 ′, a sleeving length of the shunt branch pipe and the overlapping hole is L 22 ′, and 0.2 L 02 ′≤L 12 ′≤0.8 L 02 ′ and 0.2 L 22 ′≤L 12 ′≤0.8 L 22 ′ are satisfied. 
     
     
         18 . An air conditioner, comprising a throttling device, an evaporator, and the liquid separator for refrigeration as claimed in  claim 1 , wherein the liquid separator for refrigeration is connected between the throttling device and the evaporator, the throttling device outputs the refrigerants to the first mixing chamber of the liquid separator for refrigeration, and the refrigerants are output to the evaporator after mixed using the first mixing chamber and the second mixing chamber.