Refrigerator

Abstract

A refrigerator includes a housing, a discharge device, a cold finger device, and at least two compression devices. A disassembly and assembly hole is provided on the housing located between the at least two third accommodating cavities arranged at intervals, and the disassembly and assembly hole is communicated with the first accommodating cavity and is configured for the disassembly and assembly of the discharge device. By arranging the disassembly and assembly hole, the disassembly and assembly steps of the discharge device are simplified, meeting the need of rapid testing of the compression device. By arranging the discharge device with a stepped piston, the service life of the discharge device is increased and the discharge device has higher reliability and consistency. By arranging a tree topology or net topology, the flow resistance of gas may be reduced and the refrigeration efficiency may be improved, achieving multi-stage refrigeration.

What is claimed is: 
     
         1 . A refrigerator, comprising a housing, a discharge device, a cold finger device and at least two compression devices, wherein
 the housing has a first accommodating cavity, a second accommodating cavity, and at least two third accommodating cavities, which are communicated with each other in pairs;   the discharge device is located in the first accommodating cavity;   the cold finger device is located in the second accommodating cavity;   the at least two compression devices are located in one-to-one correspondence inside the at least two third accommodating cavities, at least two third accommodating cavities are arranged at intervals, and the first accommodating cavity is located between the at least two third accommodating cavities; and   a disassembly and assembly hole is provided on the housing located between the at least two third accommodating cavities arranged at intervals, and the disassembly and assembly hole is communicated with the first accommodating cavity and is configured for disassembly and assembly of the discharge device.   
     
     
         2 . The refrigerator according to  claim 1 , wherein the housing has two third accommodating cavities, which are arranged at intervals along a first direction and located in opposite sides of the first accommodating cavity;
 two compression devices are located in one-to-one correspondence inside the two third accommodating cavities;   the first accommodating cavity is located between the two third accommodating cavities along the first direction; and   an axial direction of the disassembly and assembly hole is a second direction, which intersects with the first direction, and an opening of the disassembly and assembly hole faces external environment.   
     
     
         3 . The refrigerator according to  claim 2 , wherein the discharge device comprises two discharge assemblies arranged at intervals along the second direction, and the two discharge assemblies and the housing are jointly enclosed to form a first expansion cavity; and
 a first channel is provided on the housing between the first expansion cavity and the second accommodating cavity, and the first channel is configured to communicate the first expansion cavity with the second accommodating cavity.   
     
     
         4 . The refrigerator according to  claim 3 , wherein the discharge assembly comprises a piston, a discharge cylinder, and an elastic component;
 a baffling structure is provided in a cavity of the discharge cylinder, the baffling structure divides the cavity of the discharge cylinder into a first cavity and a second cavity, a cylinder wall of the discharge cylinder is provided with a first through-hole, the baffling structure is provided with a second through-hole, and the first through-hole, the first cavity, the second through-hole, and the second cavity are sequentially communicated;   a second channel is provided on the housing located between the first accommodating cavity and the third accommodating cavity, and the second channel corresponds to the first through-hole and is configured to communicate the first through-hole with the third accommodating cavity;   a portion of the piston is located in the first cavity of the discharge cylinder, and the other portion thereof passes through the second through-hole and is located in the second cavity; and   the elastic component is located in the second cavity of the discharge cylinder and is connected to the piston.   
     
     
         5 . The refrigerator according to  claim 4 , further comprising a cover plate, wherein the cover plate is located on one side of the discharge cylinder away from the opening of the disassembly and assembly hole and is spaced apart from the piston; and
 an outer surface of one end of the piston near the elastic component and an outer surface of one end of the piston away from the elastic component are jointly enclosed with the housing to form a third cavity.   
     
     
         6 . The refrigerator according to  claim 4 , wherein a third through-hole is provided on a cylinder wall of the discharge cylinder, and the third through-hole is communicated with the first cavity; and
 a third channel is provided on the housing located between the first accommodating cavity and the second accommodating cavity, and the third channel corresponds to the third through-hole, and is configured to communicate the third through-hole with the second accommodating cavity.   
     
     
         7 . The refrigerator according to  claim 2 , wherein the cold finger device is arranged extending inside the second accommodating cavity along a third direction; and
 the third direction intersects with the first direction and intersects with the second direction.   
     
     
         8 . The refrigerator according to  claim 1 , wherein the cold finger device comprises a first heat exchange component, a first regenerative component, a second heat exchange component and a first pulse component;
 the first heat exchange component, the first regenerative component, the second heat exchange component and the first pulse component are arranged adjacent to each other in sequence;   a fourth channel is provided on the housing located between the second accommodating cavity and the third accommodating cavity, and the fourth channel is configured to communicate the second accommodating cavity with the third accommodating cavity;   the first heat exchange component is located within the second accommodating cavity near the fourth channel, and a gas channel of the first heat exchange component is communicated with the fourth channel; and   the first pulse component is located within the second accommodating cavity near the first accommodating cavity, and a gas channel of the first pulse component is communicated with the first accommodating cavity.   
     
     
         9 . The refrigerator according to  claim 2 , wherein the cold finger device comprises a first heat exchange component, a first regenerative component, a second heat exchange component and a first pulse component;
 the first heat exchange component, the first regenerative component, the second heat exchange component and the first pulse component are arranged adjacent to each other in sequence;   a fourth channel is provided on the housing located between the second accommodating cavity and the third accommodating cavity, and the fourth channel is configured to communicate the second accommodating cavity with the third accommodating cavity;   the first heat exchange component is located within the second accommodating cavity near the fourth channel, and a gas channel of the first heat exchange component is communicated with the fourth channel; and   the first pulse component is located within the second accommodating cavity near the first accommodating cavity, and a gas channel of the first pulse component is communicated with the first accommodating cavity.   
     
     
         10 . The refrigerator according to  claim 3 , wherein the cold finger device comprises a first heat exchange component, a first regenerative component, a second heat exchange component and a first pulse component;
 the first heat exchange component, the first regenerative component, the second heat exchange component and the first pulse component are arranged adjacent to each other in sequence;   a fourth channel is provided on the housing located between the second accommodating cavity and the third accommodating cavity, and the fourth channel is configured to communicate the second accommodating cavity with the third accommodating cavity;   the first heat exchange component is located within the second accommodating cavity near the fourth channel, and a gas channel of the first heat exchange component is communicated with the fourth channel; and   the first pulse component is located within the second accommodating cavity near the first accommodating cavity, and a gas channel of the first pulse component is communicated with the first accommodating cavity.   
     
     
         11 . The refrigerator according to  claim 4 , wherein the cold finger device comprises a first heat exchange component, a first regenerative component, a second heat exchange component and a first pulse component;
 the first heat exchange component, the first regenerative component, the second heat exchange component and the first pulse component are arranged adjacent to each other in sequence;   a fourth channel is provided on the housing located between the second accommodating cavity and the third accommodating cavity, and the fourth channel is configured to communicate the second accommodating cavity with the third accommodating cavity;   the first heat exchange component is located within the second accommodating cavity near the fourth channel, and a gas channel of the first heat exchange component is communicated with the fourth channel; and   the first pulse component is located within the second accommodating cavity near the first accommodating cavity, and a gas channel of the first pulse component is communicated with the first accommodating cavity.   
     
     
         12 . The refrigerator according to  claim 5 , wherein the cold finger device comprises a first heat exchange component, a first regenerative component, a second heat exchange component and a first pulse component;
 the first heat exchange component, the first regenerative component, the second heat exchange component and the first pulse component are arranged adjacent to each other in sequence;   a fourth channel is provided on the housing located between the second accommodating cavity and the third accommodating cavity, and the fourth channel is configured to communicate the second accommodating cavity with the third accommodating cavity;   the first heat exchange component is located within the second accommodating cavity near the fourth channel, and a gas channel of the first heat exchange component is communicated with the fourth channel; and   the first pulse component is located within the second accommodating cavity near the first accommodating cavity, and a gas channel of the first pulse component is communicated with the first accommodating cavity.   
     
     
         13 . The refrigerator according to  claim 6 , wherein the cold finger device comprises a first heat exchange component, a first regenerative component, a second heat exchange component and a first pulse component;
 the first heat exchange component, the first regenerative component, the second heat exchange component and the first pulse component are arranged adjacent to each other in sequence;   a fourth channel is provided on the housing located between the second accommodating cavity and the third accommodating cavity, and the fourth channel is configured to communicate the second accommodating cavity with the third accommodating cavity;   the first heat exchange component is located within the second accommodating cavity near the fourth channel, and a gas channel of the first heat exchange component is communicated with the fourth channel; and   the first pulse component is located within the second accommodating cavity near the first accommodating cavity, and a gas channel of the first pulse component is communicated with the first accommodating cavity.   
     
     
         14 . The refrigerator according to  claim 7 , wherein the cold finger device comprises a first heat exchange component, a first regenerative component, a second heat exchange component and a first pulse component;
 the first heat exchange component, the first regenerative component, the second heat exchange component and the first pulse component are arranged adjacent to each other in sequence;   a fourth channel is provided on the housing located between the second accommodating cavity and the third accommodating cavity, and the fourth channel is configured to communicate the second accommodating cavity with the third accommodating cavity;   the first heat exchange component is located within the second accommodating cavity near the fourth channel, and a gas channel of the first heat exchange component is communicated with the fourth channel; and   the first pulse component is located within the second accommodating cavity near the first accommodating cavity, and a gas channel of the first pulse component is communicated with the first accommodating cavity.   
     
     
         15 . The refrigerator according to  claim 8 , wherein the cold finger device further comprises a second regenerative component, a third heat exchange component and a second pulse component;
 the second regenerative component, the third heat exchange component and the second pulse component are arranged adjacent to each other in sequence and located between the first heat exchange component and the first regenerative component, and a gas channel of the second regenerative component is communicated with the gas channel of the first heat exchange component, and a gas channel of the first regenerative component is communicated with a gas channel of the third heat exchange component; and   a gas channel of the second pulse component is communicated with the first accommodating cavity.   
     
     
         16 . The refrigerator according to  claim 9 , wherein the cold finger device further comprises a second regenerative component, a third heat exchange component and a second pulse component;
 the second regenerative component, the third heat exchange component and the second pulse component are arranged adjacent to each other in sequence and located between the first heat exchange component and the first regenerative component, and a gas channel of the second regenerative component is communicated with the gas channel of the first heat exchange component, and a gas channel of the first regenerative component is communicated with a gas channel of the third heat exchange component; and   a gas channel of the second pulse component is communicated with the first accommodating cavity.   
     
     
         17 . The refrigerator according to  claim 10 , wherein the cold finger device further comprises a second regenerative component, a third heat exchange component and a second pulse component;
 the second regenerative component, the third heat exchange component and the second pulse component are arranged adjacent to each other in sequence and located between the first heat exchange component and the first regenerative component, and a gas channel of the second regenerative component is communicated with the gas channel of the first heat exchange component, and a gas channel of the first regenerative component is communicated with a gas channel of the third heat exchange component; and   a gas channel of the second pulse component is communicated with the first accommodating cavity.   
     
     
         18 . The refrigerator according to  claim 11 , wherein the cold finger device further comprises a second regenerative component, a third heat exchange component and a second pulse component;
 the second regenerative component, the third heat exchange component and the second pulse component are arranged adjacent to each other in sequence and located between the first heat exchange component and the first regenerative component, and a gas channel of the second regenerative component is communicated with the gas channel of the first heat exchange component, and a gas channel of the first regenerative component is communicated with a gas channel of the third heat exchange component; and   a gas channel of the second pulse component is communicated with the first accommodating cavity.   
     
     
         19 . The refrigerator according to  claim 14 , wherein the cold finger device further comprises a second regenerative component, a third heat exchange component and a second pulse component;
 the second regenerative component, the third heat exchange component and the second pulse component are arranged adjacent to each other in sequence and located between the first heat exchange component and the first regenerative component, and a gas channel of the second regenerative component is communicated with the gas channel of the first heat exchange component, and a gas channel of the first regenerative component is communicated with a gas channel of the third heat exchange component; and   a gas channel of the second pulse component is communicated with the first accommodating cavity.   
     
     
         20 . The refrigerator according to  claim 15 , wherein a fifth channel is provided on the housing located between the second accommodating cavity and third accommodating cavity, the fifth channel is spaced apart from the fourth channel, the discharge device has a second expansion cavity, and the second expansion cavity is communicated with the gas channel of the second pulse component through the fifth channel.