Fluid control device and electric pump device

Abstract

A fluid control device and an electric pump device are provided. The fluid control device comprises a driving assembly, a pump assembly, a limiting assembly, and a main housing. The driving assembly comprises a stator assembly. The pump assembly comprises a rotor assembly, a positioning shaft and an isolation sleeve, at least part of the rotor assembly and the stator assembly being arranged in a sleeving/sleeved manner, and at least part of the isolation sleeve being located between the stator assembly and the rotor assembly. The main housing has a first chamber, at least part of the pump assembly being located in the first chamber.

1 . A fluid control apparatus, comprising:
 an actuation assembly;   at least two fluid subassemblies;   a limiting assembly; and   a main housing, wherein   at least one of the fluid subassemblies comprises a pump assembly, the actuation assembly comprises a stator assembly, and the pump assembly comprises a rotor assembly, a positioning shaft and an isolation sleeve;   the rotor assembly and the positioning shaft are limitedly arranged, the rotor assembly comprises a magnetic assembly, at least a part of the magnetic assembly is located within a range of a magnetic field of the stator assembly in an operation state, and at least a part of the isolation sleeve is located between the stator assembly and the rotor assembly, wherein the main housing is provided with a first chamber, and at least a part of the pump assembly is located inside the first chamber; and   the positioning shaft is located in the rotor assembly, a first side of the positioning shaft in an axial direction and the isolation sleeve are limitedly arranged, the limiting assembly is arranged close to a second side of the positioning shaft in the axial direction, and the limiting assembly and the positioning shaft are limitedly arranged.   
     
     
         2 . The fluid control apparatus according to  claim 1 , wherein the rotor assembly further comprises an impeller assembly, at least a part of the impeller assembly and the magnetic assembly are arranged in the axial direction of the rotor assembly, at least a part of the magnetic assembly is sleeved on an inner surface side of the stator assembly, and the isolation sleeve comprises an end wall portion and a connecting portion, wherein an extending direction of the end wall portion intersects with an axial direction of the rotor assembly; and
 in the axial direction of the rotor assembly, at least a part of the connecting portion protrudes from the end wall portion and a side of the positioning shaft and the connecting portion are limitedly arranged.   
     
     
         3 . The fluid control apparatus according to  claim 2 , wherein the pump assembly further comprises a pump cover, at least a part of the pump cover is located on an outer peripheral side of the impeller assembly, at least a part of the pump cover is located inside the first chamber, at least a part of the limiting assembly is located at the pump cover;
 the limiting assembly has a groove, and an end portion of a second side of the positioning shaft is located in the groove and abuts with a bottom wall of the groove; and   the pump cover is fixed with the main housing by injection molding, or the pump cover is separately formed with and sealedly connected to the main housing.   
     
     
         4 . The fluid control apparatus according to  claim 3 , wherein the limiting assembly comprises a connecting rib and a supporting portion, wherein the connecting rib is distributed on an outer peripheral side of the supporting portion, the supporting portion is connected with the connecting rib, and the groove is located at the supporting portion; and
 the pump cover is fixed with the main housing by injection molding, at least a part of the impeller assembly is located inside the first chamber, the main housing comprises a first duct and a second duct that are in communication with the first chamber, the connecting rib is connected with a peripheral wall of the first duct; or the pump cover is separately formed with the main housing, the pump assembly has a pump chamber, a first passage and a second passage, the pump cover forms at least a part of a wall portion of the pump chamber, and the first passage and the second passage are located at the pump cover and are in communication with the pump chamber.   
     
     
         5 . The fluid control apparatus according to  claim 3 , wherein the rotor assembly comprises a first bearing and a second bearing, and the first bearing and the second bearing are arranged in the axial direction of the rotor assembly; and
 in the axial direction of the rotor assembly, the first bearing is located between the connecting portion and the magnetic assembly, and the second bearing is located between the magnetic assembly and the limiting assembly.   
     
     
         6 . The fluid control apparatus according to  claim 5 , wherein the limiting assembly comprises a first gasket, and the first gasket is abutted between the second bearing and the pump cover. 
     
     
         7 . The fluid control apparatus according to  claim 5 , wherein the limiting assembly comprises a first limiting component, a second gasket and a third gasket, the first limiting component is fixedly connected with the positioning shaft, and the second gasket is abutted between the first bearing and the connecting portion in the axial direction of the rotor assembly; and
 the first limiting component comprises a first flange portion, and the third gasket is limited between the first flange portion and the second gasket.   
     
     
         8 . The fluid control apparatus according to  claim 7 , wherein the first limiting component has a first threaded portion, the positioning shaft has a second threaded portion, and the first threaded portion is threadedly connected with the second threaded portion. 
     
     
         9 . The fluid control apparatus according to  claim 6 , wherein the isolation sleeve and the positioning shaft are fixed by injection molding, and the magnetic assembly, the impeller assembly, the first bearing and the second bearing are fixed by injection molding. 
     
     
         10 . The fluid control apparatus according to  claim 5 , wherein at least a part of the first bearing is sleeved between the outer peripheral side of the positioning shaft and the connecting portion of the isolation sleeve, and the limiting assembly is located between the magnetic assembly and the impeller assembly in the axial direction of the rotor assembly;
 the limiting assembly comprises a second limiting component and a fourth gasket, wherein the second limiting component and the isolation sleeve are limitedly arranged and sealedly connected, and the second limiting component is located on a side of the magnetic assembly away from the connecting portion; and   the second bearing is sleeved between the outer peripheral side of the positioning shaft and the second limiting component, and the fourth gasket is abutted between the second bearing and the magnetic assembly in the axial direction of the rotor assembly.   
     
     
         11 . The fluid control apparatus according to  claim 1 , wherein the main housing is further provided with second chambers and a communication passage, the first chamber and the second chamber are spaced apart, and the first chamber and at least one of the second chambers are in communication through the communication passage; and
 at least one of the at least two the fluid subassemblies comprises a valve assembly, the valve assembly comprises a valve core, and at least a part of the valve core is sealedly located inside the second chamber.   
     
     
         12 . An electric pump device, wherein the electric pump device comprises a stator assembly, a pump assembly and a limiting assembly, the pump assembly comprises a rotor assembly, a positioning shaft and an isolation sleeve, the rotor assembly and the positioning shaft are limitedly arranged;
 the rotor assembly comprises a magnetic assembly, at least a part of the magnetic assembly is located within a range of a magnetic field of the stator assembly in an operation state, and at least a part of the isolation sleeve is located between the stator assembly and the rotor assembly; and   the positioning shaft is located in the rotor assembly, a first side of the positioning shaft in an axial direction and the isolation sleeve are limitedly arranged, the limiting assembly is arranged close to a second side of the positioning shaft in the axial direction, and the limiting assembly and the rotor assembly are limitedly arranged.   
     
     
         13 . The electric pump device according to  claim 12 , wherein the rotor assembly further comprises an impeller assembly, at least a part of the impeller assembly and the magnetic assembly are arranged in an axial direction of the rotor assembly, at least a part of the magnetic assembly is sleeved on an inner surface side of the stator assembly, and the isolation sleeve comprises an end wall portion and a connecting portion, wherein an extending direction of the end wall portion intersects with the axial direction of the rotor assembly; and
 the rotor assembly comprises a first bearing and a second bearing, which are arranged in the axial direction of the rotor assembly, the first bearing is located between the connecting portion and the magnetic assembly, and the second bearing is located between the magnetic assembly and the limiting assembly.   
     
     
         14 . The electric pump device according to  claim 13 , wherein the limiting assembly comprises a first limiting component, a second gasket and a third gasket, the first limiting component is fixedly connected with the positioning shaft, the second gasket is abutted between the first bearing and the connecting portion in the axial direction of the rotor assembly; and
 the first limiting component comprises a flange portion, and the third gasket is limited between the flange portion and the second bearing.   
     
     
         15 . The electric pump device according to  claim 13 , wherein the limiting assembly is located between the magnetic assembly and the impeller assembly and comprises a second limiting component and a fourth gasket;
 the second limiting component and the isolation sleeve are limitedly arranged and sealedly connected, the second limiting component is located on a side of the magnetic assembly away from the connecting portion; and   the second bearing is sleeved between an outer peripheral side of the positioning shaft and the second limiting component, and the fourth gasket is abutted between the second bearing and the magnetic assembly in the axial direction of the rotor assembly.   
     
     
         16 . The fluid control apparatus according to  claim 4 , wherein the rotor assembly comprises a first bearing and a second bearing, and the first bearing and the second bearing are arranged in the axial direction of the rotor assembly; and
 in the axial direction of the rotor assembly, the first bearing is located between the connecting portion and the magnetic assembly, and the second bearing is located between the magnetic assembly and the limiting assembly.   
     
     
         17 . The fluid control apparatus according to  claim 7 , wherein the isolation sleeve and the positioning shaft are fixed by injection molding, and the magnetic assembly, the impeller assembly, the first bearing and the second bearing are fixed by injection molding. 
     
     
         18 . The fluid control apparatus according to  claim 8 , wherein the isolation sleeve and the positioning shaft are fixed by injection molding, and the magnetic assembly, the impeller assembly, the first bearing and the second bearing are fixed by injection molding. 
     
     
         19 . The fluid control apparatus according to  claim 2 , wherein the main housing is further provided with second chambers and a communication passage, the first chamber and the second chamber are spaced apart, and the first chamber and at least one of the second chambers are in communication through the communication passage; and
 at least one of the at least two the fluid subassemblies comprises a valve assembly, the valve assembly comprises a valve core, and at least a part of the valve core is sealedly located inside the second chamber.