Pump group comprising two command modules

Abstract

A pump group of a cooling system of a vehicle is provided. The pump group extends along a main axis and includes an axial flow stator that produces an electromagnetic action in a direction parallel to the main axis, and two command modules positioned at two opposite axial ends of the axial flow stator. Each command module has an impeller, an impeller shaft extending along the main axis and having an impeller end, the impeller being integrally connected to the impeller end, and a control portion configured to receive a rotational control action. A rotor is integrally connected to the control portion that is controllable in rotation by action of the axial flow stator.

1 - 15 . (canceled) 
     
     
         16 . A pump group of a cooling system of a vehicle, the pump group extending along a main axis and comprising:
 an axial flow stator that produces an electromagnetic action in a direction parallel to the main axis;   a first command module and a second command module, positioned at two opposite axial ends of the axial flow stator, each command module defining a respective impeller chamber in which cooling liquid flows, wherein each command module comprises:
 i) an impeller; 
 ii) an impeller shaft that extends along the main axis and comprises an impeller end, the impeller being integrally connected to said impeller end, and a control portion configured to receive a rotational control action; and 
 iii) a rotor integrally connected to said control portion controllable in rotation by action of the axial flow stator; and 
   a pump body comprising a specially shaped stator chamber, in which the axial flow stator is housed, wherein the first and second command modules are mounted to the pump body on two opposite axial sides,   wherein each command module further comprises a module casing, the impeller chamber being defined in said module casing, a flat shell and a volute shell mutually engaged with each other, and wherein the impeller shaft is supported aligned with the main axis by the flat shell through a support opening and the control portion protrudes from the flat shell.   
     
     
         17 . The pump group of  claim 16 , wherein the axial flow stator comprises first stator poles configured to produce an electromagnetic action in a first axial direction for controlling the rotor of the first command module and second stator poles configured to produce an electromagnetic action in a second axial direction for controlling the rotor of the second command module. 
     
     
         18 . The pump group of  claim 16 , wherein the rotor comprises a discoidal element of planar annular shape in which angularly equidistant rotor poles are housed. 
     
     
         19 . The pump group of  claim 16 , wherein the rotor comprises a central element integrally connected to the control portion of the impeller shaft. 
     
     
         20 . The pump group of  claim 16 , wherein the impeller is of radial type and receives the cooling liquid in a direction parallel to the main axis to perform a thrust action thereon in a radial direction with respect to the main axis. 
     
     
         21 . The pump group of  claim 16 , wherein each command module comprises a dynamic gasket positioned in said support opening. 
     
     
         22 . The pump group of  claim 16 , further comprising an electronic control unit operatively connected to the axial flow stator to control actuation thereof. 
     
     
         23 . The pump group of  claim 22 , wherein the pump body comprises a support foot housing said electronic control unit. 
     
     
         24 . The pump group of  claim 16 , wherein the impeller shafts and the rotors are partially housed in a stator cavity. 
     
     
         25 . The pump group of  claim 16 , wherein the first and second command modules are identical. 
     
     
         26 . A cooling system of a vehicle, the cooling system comprising a pump group extending along a main axis and comprising:
 an axial flow stator that produces an electromagnetic action in a direction parallel to the main axis;   a first command module and a second command module, positioned at two opposite axial ends of the axial flow stator, each command module defining a respective impeller chamber in which cooling liquid flows, wherein each command module comprises:
 i) an impeller; 
 ii) an impeller shaft that extends along the main axis and comprises an impeller end, the impeller being integrally connected to said impeller end, and a control portion configured to receive a rotational control action; and 
 iii) a rotor integrally connected to said control portion controllable in rotation by action of the axial flow stator; and 
   a pump body comprising a specially shaped stator chamber, in which the axial flow stator is housed, wherein the first and second command modules are mounted to the pump body on two opposite axial sides,   wherein each command module further comprises a module casing, the impeller chamber being defined in said module casing, a flat shell and a volute shell mutually engaged with each other, and wherein the impeller shaft is supported aligned with the main axis by the flat shell through a support opening and the control portion protrudes from the flat shell,   wherein the first and second command modules operate in series, so that a predefined quantity of cooling liquid flows first in the first command module and then in the second command module.   
     
     
         27 . The cooling system of  claim 26 , wherein the first and second command modules operate, fluidically connected to each other, in parallel, so that a respective predefined quantity of cooling liquid flows in each command module. 
     
     
         28 . The cooling system of  claim 26 , further comprising a plurality of valve groups that manage flowing directions of the cooling liquid flowing in a plant, wherein the first and second command modules operate in series or in parallel according to positioning of said plurality of valve groups.