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CN-121986219-A - Pump assembly

CN121986219ACN 121986219 ACN121986219 ACN 121986219ACN-121986219-A

Abstract

The invention is a pump assembly (1) for a cooling system of an operating assembly of a vehicle, the pump assembly extending with respect to an axis (X-X) and comprising i) an impeller set (2) comprising a shaft (25) extending along the axis (X-X) and a bladed impeller (20) integrally connected to the shaft, ii) a motor set (3) comprising a stator (31) and a rotor (32), wherein the rotor (32) is engaged with the shaft (25), iii) a housing set (4) comprising a wet chamber (40) in which the bladed impeller (20) is housed, the housing set comprising a pump inlet mouth (401) positioned on the axis (X-X) and a pump outlet mouth (402) positioned radially away from the axis (X-X). The containment group (4) comprises-an upper housing (41) comprising a pump inlet mouth (401) and a pump outlet mouth (402), the upper housing comprising a volute (415) shaped to convey the incoming cooling liquid from the pump inlet mouth (401) to the pump outlet mouth (402), a lower housing (42) in which the motor group (3) is housed, wherein the lower housing (42) comprises a side wall (422) extending substantially parallel to the axis (X-X) and a bottom wall (423) extending substantially orthogonal to the axis (X-X). Furthermore, the receiving group (4) comprises at least one cooling tube (9) comprising a tube inlet mouth (910) and a tube outlet mouth (920) positioned close to the pump inlet mouth (401) such that the cooling liquid flows into the cooling tube (9) when being sucked in. The cooling tube (9) extends in the flow direction from a tube inlet mouth (910), the cooling tube comprising a vertical inlet section (912) accommodated in the side wall (422), a vertical outlet section (922) accommodated in the side wall (422), and an outlet connection section (93) accommodated in the upper housing (41) and extending to the tube outlet mouth (920).

Inventors

  • Marco Gubitosa
  • Marco AlSophie

Assignees

  • 萨乐锐伊塔洛工业有限公司

Dates

Publication Date
20260505
Application Date
20241002
Priority Date
20231129

Claims (13)

  1. 1. A pump assembly (1) for a cooling system of an operating assembly of a vehicle, the pump assembly extending with respect to an axis (X-X) and comprising: i) An impeller group (2) comprising a shaft (25) extending along said axis (X-X), and a bladed impeller (20) integrally connected to said shaft; ii) an electric motor set (3) comprising a stator (31) and a rotor (32), wherein the rotor (32) is engaged with the shaft (25); iii) -a housing group (4) comprising a wet chamber (40) in which the vane impeller (20) is housed, the housing group comprising a pump inlet mouth (401) positioned on the axis (X-X), and a pump outlet mouth (402) positioned radially away from the axis (X-X), wherein the housing group (4) comprises: -an upper housing (41) comprising the pump inlet nozzle (401) and the pump outlet nozzle (402), the upper housing comprising a volute (415) shaped to transfer incoming cooling liquid from the pump inlet nozzle (401) to the pump outlet nozzle (402); -a lower housing (42) in which the electric motor set (3) is housed, wherein the lower housing (42) comprises a side wall (422) extending substantially parallel to the axis (X-X), and a bottom wall (423) extending substantially orthogonal to the axis (X-X); Wherein the accommodation group (4) comprises at least one cooling tube (9) comprising a tube inlet mouth (910) and a tube outlet mouth (920), wherein the tube outlet mouth (920) is enclosed in the upper housing (41) and is located in a position close to the pump inlet mouth (401) such that the cooling liquid flows into the cooling tube (9) when being sucked in, wherein the cooling tube (9) extends from the tube inlet mouth (910) in a flow direction, the cooling tube comprising a vertical inlet section (912) accommodated in the side wall (422), a vertical outlet section (922) accommodated in the side wall (422), and an outlet connection section (93) accommodated in the upper housing (41) and extending to the tube outlet mouth (920).
  2. 2. Pump assembly (1) according to claim 1, wherein the outlet connection section (93) extends into a volute wall (4150) bounding the volute (415).
  3. 3. The pump assembly (1) according to claim 2, wherein the volute wall (4150) comprises a radial stiffening rib (4150 '), and the outlet connection section (93) extends into the radial stiffening rib (4150').
  4. 4. Pump assembly (1) according to any one of the preceding claims, wherein the lower housing (42) further comprises an end wall (421) substantially orthogonal to the axis (X-X) and adapted to delimit the wet chamber (40), wherein the tube inlet mouth (910) is positioned on the end wall (421).
  5. 5. Pump assembly (1) according to claim 4, wherein the cooling tube (9) comprises a horizontal inlet section (911) between the tube inlet mouth (910) and the vertical inlet section (912).
  6. 6. Pump assembly (1) according to any one of the preceding claims, wherein the upper housing (41) and the lower housing (42) are engaged with each other in an axial direction and comprise respective upper horizontal engagement surfaces (417,427), wherein the vertical outlet section (922) and the outlet connection section (93) have respective axially facing openings, wherein the accommodation group (4) comprises an upper planar gasket (71), preferably made of metal, which is positioned between the upper horizontal engagement surfaces (417,427).
  7. 7. Pump assembly (1) according to any one of the preceding claims, wherein the cooling tube (9) further comprises a horizontal inlet section (913) and a horizontal outlet section (923) housed in the bottom wall (423) between the vertical inlet section (912) and the vertical outlet section (922).
  8. 8. Pump assembly (1) according to claim 7, wherein the horizontal inlet section (913) and the horizontal outlet section (923) extend in a radial direction with respect to the axis (X-X).
  9. 9. Pump assembly (1) according to any one of the preceding claims, further comprising a control board (10) positioned close to the bottom wall (423) at a face facing away from the face facing the motor group (3).
  10. 10. Pump assembly (1) according to any of the preceding claims, wherein the lower housing (42) comprises a first lower housing half (42') comprising a side wall (422), and a second lower housing half (42 ") comprising the bottom wall (423).
  11. 11. Pump assembly (1) according to claim 10, wherein the first lower housing half (42 ') and the second lower housing half (42 ") are mutually engaged in the axial direction, the first lower housing half and the second lower housing half comprising respective lower horizontal engagement surfaces (428 ', 428"), wherein the vertical inlet section (912) and the horizontal inlet section (913) have respective axial facing openings, and wherein the vertical outlet section (922) and the horizontal outlet section (923) have respective axial facing openings, wherein the accommodation group (4) comprises a lower planar gasket (72), preferably made of metal, which is positioned between the lower horizontal engagement surfaces (428 ', 428 ").
  12. 12. Pump assembly (1) according to any of the preceding claims, wherein some tube sections are shaped to comprise a plurality of expansion areas, preferably some vertical tube sections and/or some horizontal tube sections, such as vertical outlet sections (922) and/or horizontal outlet sections (923).
  13. 13. Pump assembly (1) according to any of the preceding claims, wherein the receiving group (4) comprises a plurality of cooling tubes (9), preferably equally angularly spaced.

Description

Pump assembly Technical Field The present invention relates to a pump assembly of a cooling system of a vehicle. Background In the present disclosure, the term "vehicle" means any transportation device without any limitation regarding type or size, i.e. a motor vehicle or an articulated truck. In other words, the present invention relates to the automotive field, and in particular to a thermal management system for an operating component or systems of a vehicle. In particular, in the present disclosure, an "operating assembly" refers to a component or a specific group of components for performing some operation necessary for the movement of a vehicle. In a preferred embodiment, the "operating assembly" includes, for example, a motor assembly of the heat absorption type, of the electric type or of the hybrid type. In other construction variations, the "operating assembly" includes other vehicle components of both mechanical type (such as a transmission assembly) and electrical type (such as a "battery assembly" or "motor pack") included in the vehicle. Various embodiments of pump assemblies for cooling systems of one or more operating assemblies of a vehicle are known in the art. In particular, these pump assemblies are intended to allow a given cooling fluid to circulate to or from the operating assemblies. Specifically, a "coolant" is a water-based liquid, for example, a solution comprising water and a glycol or urea solution. In other embodiments, the "cooling fluid" is an oily solution (dielectric oil). It is also known in the art to distinguish between these pump assemblies according to the type of actuation. For example, pump assemblies are known that include an electric motor (and sometimes a control board) for rotationally actuating the impeller. Such an embodiment of the pump assembly requires management (i.e., dissipation) of the thermal energy emitted by the electrical and electronic components. Specifically, the larger the power size of the pump assembly, the greater the thermal energy to be dissipated. Often, natural convection, conduction, and radiation do not meet the thermal energy dissipation coil requirements. Lack of heat dissipation or partial heat dissipation causes malfunction, damage and potential damage to the electrical and electronic components of the pump assembly. Disclosure of Invention It is therefore an object of the present invention to provide a pump assembly for a cooling system of a vehicle operating assembly, which pump assembly solves such problems. Such an object is achieved by a pump assembly according to claim 1. The dependent claims relate to preferred constructional variants with other advantageous aspects. Drawings The object of the invention will now be described in detail with the aid of the accompanying drawings, in which: fig. 1a, 1b and 1c show a first side view, a second side view and a top view, respectively, of a pump assembly according to the invention; fig. 2' and 2 "show a first perspective view and a second perspective view of a separate component of a pump assembly according to the invention; figure 3 shows a partial cross-sectional top view of a pump assembly according to the invention; FIG. 3a is a side view of the pump assembly of FIG. 3; FIG. 3a' is a cross-sectional view taken along the cross-sectional plane A-A in FIG. 3; FIG. 3B is a cross-sectional view taken along the cross-sectional plane B-B in FIG. 3 a; Figure 3C is a cross-sectional view taken along the cross-sectional plane C-C in figure 3 a'. Detailed Description In the above figures, the reference numeral 1 generally designates a pump assembly of a cooling system for an operating assembly of a vehicle. The pump assembly 1 of the present invention extends mainly longitudinally with respect to the axis X-X. The pump assembly 1 comprises an impeller set 2 comprising a shaft 25 extending along an axis X-X and a bladed impeller 20 integrally connected to the shaft 25. The controlled rotation of the shaft 25 corresponds to the rotation of the vane wheel 20. According to the invention, the pump assembly 1 comprises a motor set 3 comprising a stator 31 and a rotor 32. The rotor 32 is engaged with the shaft 25. In practice, the rotation of the rotor 32 is caused by the rotation of the shaft 25. In the embodiment, the stator 31 accommodates the rotor 32. In an embodiment, the stator 31 axially faces the rotor 32. According to the invention, the pump assembly 1 further comprises a set of receptacles 4. Preferably, the containment group 4 is adapted to contain at least a majority, preferably all, of the components of the pump assembly 1 of the present invention described below. Preferably, the containment group 4 may be fluidly connected to a pipe of the cooling system, in which the cooling liquid moved by the pump assembly 1 flows. According to the invention, the receiving group 4 comprises a wet chamber 40 in which the impeller blades 20 are received. Furthermore, the containment group 4 comprises