Pump unit

Patent metadata

Field	Value
Publication number	US-9800098-B2
Application number	US-201113884631-A
Country	US
Kind code	B2
Filing date	Nov 2, 2011
Priority date	Nov 11, 2010
Publication date	Oct 24, 2017
Grant date	Oct 24, 2017

Abstract

A pumping set includes an electric drive motor, which exhibits a stator casing and at least one terminal box connected with the latter, wherein the interior of the terminal box exhibits at least one separating wall, which divides an interior space of the terminal box into at least one electronics area with electronic components and a connection area, wherein the connection area incorporates both electrical connections for at least one connection line along with contacts for establishing an electrical connection with electrical or electronic components arranged inside the stator casing.

First claim

We claim:

1. A pumping set comprising:
an impeller ( 10 ) that engages into a pump housing; and
an electric drive motor configured to rotate the impeller, the electric drive motor including:
a stator casing ( 2 ),
a stator ( 4 ) disposed within the stator casing,
stator electrical or electronic components ( 18 ) disposed within the stator casing,
a rotor ( 8 ) coupled to the impeller and rotated by the stator,
at least one terminal box ( 14 ) secured to the stator casing and having an interior space,
at least one separating wall ( 30 ) located within the terminal box and dividing the interior space of the terminal box into at least one electronics area ( 32 ) and a connection area ( 34 ), the connection area ( 34 ) having an open side facing the stator casing such that the stator casing closes the open side of the connection area,
electronic components ( 40 ) located in the electronics area,
terminal clamps or plug contacts for at least one connection line, the terminal clamps or plug contacts including contact sections for contacting the connection line, the contact sections being located in the connection area, the terminal clamps or plug contacts further extending through the at least one separating wall so as to electrically connect with the electronic components in the electronics area, and
contacts ( 44 ) electrically connected to the stator electrical or electronic components in the stator casing, the contacts ( 44 ) being arranged in the connection area.

2. The pumping set according to claim 1 , wherein the terminal box ( 14 ) is secured to an axial face of the stator casing ( 2 ).

3. The pumping set according to claim 1 , wherein the terminal clamps ( 46 ) exhibit a lever ( 48 ) for opening the terminal clamps ( 46 ), wherein the lever ( 48 ) is arranged so that it can be moved toward a cable bushing ( 36 ) in a wall ( 22 ) of the terminal compartment ( 34 ) for opening purposes.

4. The pumping set according to claim 1 , wherein the contacts for establishing an electrical connection with the electrical or electronic components ( 18 ) inside the stator casing ( 2 ) are designed as plug contacts ( 44 ), which engage with corresponding plug contacts ( 20 ) on the stator or stator casing ( 2 ).

5. The pumping set according to claim 1 , wherein the connection area ( 34 ) adjoins an outer wall ( 22 ) of the terminal box ( 14 ), which incorporates at least one cable bushing ( 36 ).

6. The pumping set according to claim 1 , wherein at least one section ( 30 b ) of the separating wall ( 30 ) runs at an inclination to the exterior sides ( 22 , 24 ) of the terminal box ( 14 ).

7. The pumping set according to claim 1 , wherein the terminal box ( 14 ) is pot-shaped in design.

8. The pumping set according to claim 1 , wherein the separating wall ( 30 ) is a separate component that is placed in the terminal box ( 14 ), and preferably joined with the walls of the terminal box ( 14 ) via latching connections.

9. The pumping set according to claim 1 , wherein the separating wall ( 30 ) carries at least one circuit board ( 38 ) arranged in the electronics area ( 32 ).

10. The pumping set according to claim 1 , wherein the pumping set is designed as a recirculation pumping set.

11. The pumping set according to claim 10 , wherein the pumping set is a heating or industrial water recirculation pumping set.

12. The pumping set according to claim 1 , wherein the drive motor is a canned motor.

Assignees

• Blaser Georg
• Broesamle Pino
• Grundfos Holding As

Inventors

• Blaser Georg
• Broesamle Pino

Classifications

• H02K5/1737

  radially supporting the rotor around a fixed spindle; radially supporting the rotor directly · CPC title

• G05D9/12

  characterised by the use of electric means · CPC title

• H02K9/197

  in which the rotor or stator space is fluid-tight, e.g. to provide for different cooling media for rotor and stator · CPC title

• H02K5/10

  with arrangements for protection from ingress, e.g. water or fingers · CPC title

• H02K5/128

  using air-gap sleeves or air-gap discs · CPC title