Search

EP-4144990-B1 - AIR SUCTION SILENCER, COMPRESSOR, AND HOUSEHOLD APPLIANCE

EP4144990B1EP 4144990 B1EP4144990 B1EP 4144990B1EP-4144990-B1

Inventors

  • HUANG, GANG
  • LI, JUAN

Dates

Publication Date
20260506
Application Date
20220331

Claims (13)

  1. A suction silencer (10), comprising: a housing (200) having a silencing cavity (202); and a dividing assembly (300) disposed in the silencing cavity (202) and dividing the silencing cavity (202) into a first cavity (202a) and a second cavity (202b), the dividing assembly (300) having a first flow channel (302) and a second flow channel (304), both the first flow channel (302) and the second flow channel (304) being in communication with the first cavity (202a) and the second cavity (202b), wherein: the second flow channel (304) is located outside the first flow channel (302), wherein a level difference is present between an end surface of the first flow channel (302) away from the second cavity (202b) and an end surface of the second flow channel (304) away from the second cavity (202b), and/or a level difference is present between an end surface of the first flow channel (302) away from the first cavity (202a) and an end surface of the second flow channel (304) away from the first cavity (202a).
  2. The suction silencer (10) according to claim 1, wherein a flow path length of the first flow channel (302) is different from a flow path length of the second flow channel (304).
  3. The suction silencer (10) according to claim 1, wherein: the end surface of the first flow channel (302) away from the first cavity (202a) is flush with the end surface of the second flow channel (304) away from the first cavity (202a); and the level difference is present between the end surface of the first flow channel (302) away from the second cavity (202b) and the end surface of the second flow channel (304) away from the second cavity (202b).
  4. The suction silencer (10) according to claim 1, wherein a flow path length of the second flow channel (304) is 0.4 to 0.8 times of a flow path length of the first flow channel (302).
  5. The suction silencer (10) according to claim 1, wherein the dividing assembly (300) comprises a communication pipe (310), both the first flow channel (302) and the second flow channel (304) being located in the communication pipe (310).
  6. The suction silencer (10) according to claim 5, wherein: the communication pipe (310) comprises a first pipe portion (312) and a second pipe portion (314) that are connected to each other, the first pipe portion (312) having a greater outer diameter than the second pipe portion (314); and in an extending direction of the communication pipe (310), the first flow channel (302) penetrates the first pipe portion (312) and the second pipe portion (314), and the second flow channel (304) penetrates the first pipe portion (312).
  7. The suction silencer (10) according to claim 5, wherein the dividing assembly (300) further comprises a dividing plate (320) disposed in the silencing cavity (202) and dividing the silencing cavity (202) into the first cavity (202a) and the second cavity (202b), a mounting hole (322) being provided in the dividing plate (320), the communication pipe (310) being inserted into the mounting hole (322), wherein: an outer wall of the communication pipe (310) is sealingly connected to an inner wall of the mounting hole (322); or a gap flow channel (306) is provided between the outer wall of the communication pipe (310) and the inner wall of the mounting hole (322).
  8. The suction silencer (10) according to claim 1, wherein: the dividing assembly (300) comprises: a dividing plate (320) disposed in the silencing cavity (202) and dividing the silencing cavity (202) into the first cavity (202a) and the second cavity (202b); and a communication pipe (310) penetrating the dividing plate (320), the first flow channel (302) is located in the communication pipe (310); and the second flow channel (304) is located in the dividing plate (320).
  9. The suction silencer (10) according to claim 8, wherein: a mounting hole (322) is provided in the dividing plate (320) and located in a region enclosed by a plurality of second flow channels (304), the communication pipe (310) passing through the mounting hole (322); or the mounting hole (322) is provided in the dividing plate (320), the communication pipe (310) passing through the mounting hole (322), wherein an outer wall of the communication pipe (310) is connected to an inner wall of the mounting hole (322) by a plurality of connection ribs, and wherein the plurality of connection ribs are spaced apart from each other and surround the communication pipe (310) for one circle to define the plurality of second flow channels (304).
  10. The suction silencer (10) according to claim 1, wherein a plurality of second flow channels (304) is provided, the plurality of second flow channels (304) being spaced apart from each other and surrounding the first flow channel (302).
  11. The suction silencer (10) according to claim 10, further comprising an outlet pipe (500) in communication with the second cavity (202b), wherein: the first cavity (202a), the dividing assembly (300), and the second cavity (202b) are arranged in a first direction; the housing (200) comprises a first housing portion (210) and a second housing portion (220); the first housing portion (210) and the second housing portion (220) are jointed with each other in a second direction and enclose to form the silencing cavity (202), wherein a center line of the outlet pipe (500) is aligned with a center line of the first flow channel (302) in the first direction; or the first housing portion (210) and the second housing portion (220) are jointed with each other in the first direction and enclose to define the silencing cavity (202), wherein a center line of the outlet pipe (500) is misaligned with a center line of the first flow channel (302) in the first direction.
  12. A compressor, comprising a suction silencer (10) according to any one of claims 1 to 11.
  13. A household appliance, comprising a compressor according to claim 12.

Description

The present application claims a priority to Chinese Patent Application No. 202110354132.4, filed with China National Intellectual Property Administration on March 31, 2021. FIELD The present disclosure relates to the field of silencer technologies, and more particularly, to a suction silencer, a compressor, and a household appliance. BACKGROUND A refrigerator is one of household appliances commonly used in modern resident life. With the improvement of the living standard of people, people have increasingly higher requirements for noise and energy consumption of the refrigerator. A compressor is an essential component of the refrigerator, and a suction structure is an important suction flow channel of a compressor. A design of the suction structure in the compressor not only considers the noise, but also considers cooling capacity and coefficient of performance (COP). How to take into account both the noise and the energy consumption becomes an important research point for designing the suction structure of the compressor. KR 2003/83727 Y1 relates to a pumping apparatus for a suction muffler for a hermetic compressor, wherein a channel communicates with both a first cavity and a second cavity of the muffler. GB 771 106 A discloses an engine exhaust silencer, while CN 1 216 345 A describes a suction muffler for a compressor. SUMMARY Technical Problems A main object of the present disclosure is to provide a suction silencer, which aims to take into account both noise and energy consumption. Technical Solutions To this end, the present disclosure provides a suction silencer according to claim 1. The suction silencer includes a housing having a silencing cavity, and a dividing assembly disposed in the silencing cavity and dividing the silencing cavity into a first cavity and a second cavity. The dividing assembly has a first flow channel and a second flow channel. Both the first flow channel and the second flow channel are in communication with the first cavity and the second cavity. A level difference is present between an end surface of the first flow channel away from the second cavity and an end surface of the second flow channel away from the second cavity, and/or a level difference is present between an end surface of the first flow channel away from the first cavity and an end surface of the second flow channel away from the first cavity. The second flow channel is located outside the first flow channel. In an embodiment, a flow path length of the first flow channel is different from a flow path length of the second flow channel. In an embodiment, the end surface of the first flow channel away from the first cavity is flush with the end surface of the second flow channel away from the first cavity. The level difference is present between the end surface of the first flow channel away from the second cavity and the end surface of the second flow channel away from the second cavity. In an embodiment, a flow path length of the second flow channel is 0.4 to 0.8 times of a flow path length of the first flow channel. In an embodiment, the dividing assembly includes a communication pipe. Both the first flow channel and the second flow channel are located in the communication pipe. In an embodiment, the communication pipe includes a first pipe portion and a second pipe portion that are connected to each other. The first pipe portion has a greater outer diameter than the second pipe portion. In an extending direction of the communication pipe, the first flow channel penetrates the first pipe portion and the second pipe portion, and the second flow channel penetrates the first pipe portion. In an embodiment, the dividing assembly further includes a dividing plate disposed in the silencing cavity and dividing the silencing cavity into the first cavity and the second cavity. A mounting hole is provided in the dividing plate. The communication pipe is inserted into the mounting hole. An outer wall of the communication pipe is sealingly connected to an inner wall of the mounting hole, or a gap flow channel is provided between the outer wall of the communication pipe and the inner wall of the mounting hole. In an embodiment, the dividing assembly includes a dividing plate disposed in the silencing cavity and dividing the silencing cavity into the first cavity and the second cavity, and a communication pipe penetrating the dividing plate. The first flow channel is located in the communication pipe. The second flow channel is located in the dividing plate. In an embodiment, a mounting hole is provided in the dividing plate and located in a region enclosed by a plurality of second flow channels, and the communication pipe passes through the mounting hole. Or, the mounting hole is provided in the dividing plate, the communication pipe passes through the mounting hole, an outer wall of the communication pipe is connected to an inner wall of the mounting hole by a plurality of connection ribs, and the plurality of connection