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WO2018158785A1 - Solenoid-type circuital element having integrated layout - Google Patents

Solenoid-type circuital element having integrated layout Download PDF

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Publication number
WO2018158785A1
WO2018158785A1 PCT/IT2017/000041 IT2017000041W WO2018158785A1 WO 2018158785 A1 WO2018158785 A1 WO 2018158785A1 IT 2017000041 W IT2017000041 W IT 2017000041W WO 2018158785 A1 WO2018158785 A1 WO 2018158785A1
Authority
WO
WIPO (PCT)
Prior art keywords
electro
solenoid assembly
assembly according
selective activation
thermal protection
Prior art date
Application number
PCT/IT2017/000041
Other languages
French (fr)
Inventor
Marta Cassola
Original Assignee
Ceme S.P.A.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Ceme S.P.A. filed Critical Ceme S.P.A.
Priority to PCT/IT2017/000041 priority Critical patent/WO2018158785A1/en
Priority to EP17719728.2A priority patent/EP3589840A1/en
Publication of WO2018158785A1 publication Critical patent/WO2018158785A1/en

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B35/00—Piston pumps specially adapted for elastic fluids and characterised by the driving means to their working members, or by combination with, or adaptation to, specific driving engines or motors, not otherwise provided for
    • F04B35/04—Piston pumps specially adapted for elastic fluids and characterised by the driving means to their working members, or by combination with, or adaptation to, specific driving engines or motors, not otherwise provided for the means being electric
    • F04B35/045—Piston pumps specially adapted for elastic fluids and characterised by the driving means to their working members, or by combination with, or adaptation to, specific driving engines or motors, not otherwise provided for the means being electric using solenoids
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B17/00—Pumps characterised by combination with, or adaptation to, specific driving engines or motors
    • F04B17/03—Pumps characterised by combination with, or adaptation to, specific driving engines or motors driven by electric motors
    • F04B17/04—Pumps characterised by combination with, or adaptation to, specific driving engines or motors driven by electric motors using solenoids
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B17/00—Pumps characterised by combination with, or adaptation to, specific driving engines or motors
    • F04B17/03—Pumps characterised by combination with, or adaptation to, specific driving engines or motors driven by electric motors
    • F04B17/04—Pumps characterised by combination with, or adaptation to, specific driving engines or motors driven by electric motors using solenoids
    • F04B17/046—Pumps characterised by combination with, or adaptation to, specific driving engines or motors driven by electric motors using solenoids the fluid flowing through the moving part of the motor
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
    • H01H71/08—Terminals; Connections
    • H01H2071/086—Low power connections for auxiliary switches, e.g. shunt trip
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
    • H01H71/02—Housings; Casings; Bases; Mountings
    • H01H71/0207—Mounting or assembling the different parts of the circuit breaker
    • H01H71/0228—Mounting or assembling the different parts of the circuit breaker having provisions for interchangeable or replaceable parts

Definitions

  • the present invention relates to a solenoid-type circuital element, which can be used in various electronic and/or electrotechnical fields (such as for example realising electro valves or oscillating pumps and the like), and therefore the present invention also relates to functional assemblies - such as electro valves or pumps for pneumatic and/or hydraulic circuits - equipped with at least one such solenoid-type circuital element.
  • so-called “solenoids” also known by different names, including “induction coils”
  • induction coils By appropriately varying an electromagnetic field and exploiting the forces generated according to such variation, the mass is moved and therefore the effects can be exploited (for example in terms of the opening or closing, even partial, of a valve body, or in terms of imparting a fluid flow rate in a circuit).
  • solenoids of the known type are functionally coupled to other circuital: components typically, coupling with a selective electrical energy supply device (or more simply a "switch") is necessary and coupling is often also necessary with electronic safety devices that interrupt the electric power supply to the solenoid when the latter is overheated.
  • a selective electrical energy supply device or more simply a "switch”
  • thermal protection devices such as "thermistors” (therefore “PTC” or “NTC” type semiconductor devices) are used, the latter must be chosen in a very restricted way with respect to the specific application of the solenoid: the restricted choice, which largely depends on the critical transition temperature of the thermistor's behaviour (which as is known changes its status from being a conductor to an insulator according to reaching a certain threshold temperature), means a very wide range of integrated solenoids has to be designed and produced, which must be differentiated in an economically disadvantageous way according to the different working conditions (activation frequency, maximum environmental temperature to which it may be exposed etc.) to which the solenoid must be subject when installed in a complex product and/or in a circuit.
  • thermal protection devices such as “thermistors” (therefore “PTC” or “NTC” type semiconductor devices) are used, the latter must be chosen in a very restricted way with respect to the specific application of the solenoid: the restricted choice, which largely depends on the critical transition temperature of the thermistor'
  • thermal protectors and activation switches are structurally integrated, it is not infrequent to impart a substantial thermal shock (for example due to the fact that the components are inserted into a mould into which the plastic which is to contain them is poured) on the circuital components to be integrated, and this thermal shock may be the cause of practically irreversible damage on the "final" assembled product.
  • the object of the present invention is therefore to provide an integrated solenoid assembly which performs its main function with great efficiency and speed but which at the same time is very easy and cheap to design and build in volume manufacturing.
  • the object of the present invention is to implement an integrated solenoid assembly which however guarantees excellent activation (both in terms of the effort exerted and in terms of control precision) by the control system into which the assembly itself is integrated.
  • an object of the present invention is that of designing an integrated solenoid assembly which is both universal i.e. that can be easily assembled on a wide range of complete products (e.g. on valves or on pumps) which can in turn be assembled in hydraulic or pneumatic circuits of a rather different nature.
  • An embodiment of the integrated solenoid assembly according to the invention is now described, by way of non-limiting example, represented in the appended figures, in which:
  • FIG. 1 and 2 show, from different angles, perspective views of the integrated solenoid assembly according to the invention
  • figure 3 shows a front view of the integrated solenoid assembly of figure 1 ;
  • figure 4 shows a sectional view of the integrated solenoid assembly according to trace line Ill-Ill of figure 2;
  • FIG. 5 shows a perspective view of a second embodiment of the integrated solenoid assembly according to the invention.
  • figure 6 shows a sectional view of the integrated solenoid assembly according to trace line VI-VI of figure 5.
  • the integrated solenoid assembly according to the present invention is, as mentioned above, associable with electro valves and/or oscillating electro pumps and, from a structural point of view, essentially comprises an electro inductive element 2 (which in turn defines a predetermined number of turns arranged along an axis of extension 2a) connectible at its respective ends to an electric power supply circuit and a selective activation element 3 (or in other words a switch) operatively active on the electro inductive element 2 for configuring it reversibly at least between an inactive condition - in which an electromagnetic field is not generated - and an active condition - in which an electromagnetic field is generated.
  • the thermal protection element 4 which is active on the electro inductive element 2 and/or on the selective activation element 3 for defining an emergency condition thereof in which an electric power supply is interrupted according to reaching a critical temperature: advantageously, the electro inductive element 2, the selective activation element 3 and the thermal protection element 4 are contained in a containment shell 5 which in turn is placed in simultaneous direct contact with the electro inductive element 2, with the selective activation element 3 and with the thermal protection element 4 (hence defining a structural and functional integration between these same components).
  • the selective activation element 3 and the thermal protection element 4 are positioned "within" the containment shell 5 (i.e. they are inside the volume defined by the containment shell 5 or however in close contact with its internal or external delimiting surfaces) at a portion of the electro inductive element 2 having a maximum working temperature during conditions of use of the integrated solenoid assembly 1 : in this way, the safe working conditions of the integrated assembly 1 are maximised, since any over-heating due to abnormal working conditions is perceived with a practically minimal time delay (or even no delay) and may be translated immediately into the safe switching off of the solenoid itself.
  • the selective activation element 3 and the thermal protection element 4 are positioned "within" the containment shell 5 (i.e. inside the volume defined by the containment shell 5 or however in close contact with its inner or outer delimiting surfaces) at a median portion of the electro inductive element 2: from a geometric point of view, such median position is defined along the axis of extension 2a at equal distances from the ends of the electro inductive element 2 itself.
  • the latter may comprise a main portion 5a circumscribed to the electro inductive element 2 (this portion is conformed according to a cylindrical body), a base portion 5b connected to the main portion 5a in proximity to at least one end of the electro inductive element (this portion is conformed according to a toroid) and finally a containment portion 5c afforded internally to the main portion 5a and/or the base portion 5b; the containment portion 5c is counter- shaped to the selective activation element 3 and/or to the thermal protection element 4 and, in fact, comprises one or more cavities.
  • the present invention envisages the selective activation element 3 comprising at least one diode, while the thermal protection element 4 comprises at least one bimetallic relay: the latter choice makes the integrated solenoid assembly very flexible in terms of adaptation, in contrast to the prior art described above (thermistors).
  • electro connectors 6 are also provided, emerging from the containment shell 5 and circuitally connected at least to the electro inductive element 2: in the appended figures, it can be seen that these electro connectors 6 emerge from the base portion 5b of the containment shell 5.
  • the containment shell 5 is realised through co-moulding on the electro inductive element 2, on the selective activation element 3 and on the thermal protection element 4: this enables extremely fast production operations and also simultaneously allows all the components of the integrated assembly 1 to be equally protected from the external environmental conditions and stabilised in terms of relative position.
  • the containment shell 5 itself is co-moulded onto the electro inductive element 2 maintaining an interval of melting and/or moulding temperatures comprised between 240 °C and 260 °C and preferably comprised between 242 °C and 255 °C.
  • the containment shell 5 may be realised so as to comprise a housing pocket 5a, which in turn may be intended to receive the electro inductive element 2 and/or the selective activation element 3 and/or the thermal protection element 4 (the choice of one or more of these components varies according to the requirements at the time): such pocket may be in any position, for example it may be at a cylindrical external lateral surface of the containment shell 5 or, as shown in figures 5 and 6, the pocket 5a may conveniently be realised at or in proximity to an internal surface of the containment shell 5 (such internal surface is typically preferably a cylindrical external lateral surface).
  • the pocket 5a illustrated in the figures just described defines an axis of insertion parallel to the axis of extension 2a and offset radially with respect to the latter and, furthermore, in the pocket 5a, an insertion opening is defined along such axis of insertion.
  • the pocket 5a further defines housing spaces adapted to allow circuital connections between the electro inductive element 2 and/or the selective activation element 3 and/or the thermal protection element 4 (as can be seen in figures 5 and 6, there may be electrical connections "in series" between the circuital elements just mentioned).
  • a complex functional assembly is also conveniently part of the present invention, which may for example be a solenoid-type activation electro valve or an oscillating electro pump still activated by one or more solenoids, which include at least one integrated solenoid assembly according to what has been described up to now and according to the following claims.
  • the invention achieves various advantages with respect to the prior art. Above all, thanks to its peculiar structural architecture - and the consequent possible realisation procedure resulting therefrom - it is possible to minimise the overall dimensions of the finished product, guaranteeing at the same time notable operating reliability and easy and cheap volume manufacturing. Furthermore, the peculiar choice of electronic components used in the present invention allows the degree of "strength" and the application versatility of the integrated solenoid assembly to be greatly increased, since it adapts very easily to different application/operating conditions without any "surgical" changes or choices of components (which further increases the economic value in terms of large scale manufacturing).
  • the presence and special geometry/topology of the encapsulation shell performs the important function of protecting the components inside it: this protection is particularly effective against the thermal shock which occurs when performing the "final" integrative assembly of the solenoid assembly in electro valve bodies or electro pump bodies.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Electromagnets (AREA)

Abstract

An integrated solenoid assembly comprises an electro inductive element, a selective activation element active on the electro inductive element and a thermal protection element; the electro inductive element, the selective activation element and the thermal protection element are contained in a single containment shell which in turn is in direct simultaneous contact with the electro inductive element, with the selective activation element and with the thermal protection element.

Description

DESCRIPTION
SOLENOID-TYPE CIRCUITAL ELEMENT HAVING INTEGRATED
LAYOUT
The present invention relates to a solenoid-type circuital element, which can be used in various electronic and/or electrotechnical fields (such as for example realising electro valves or oscillating pumps and the like), and therefore the present invention also relates to functional assemblies - such as electro valves or pumps for pneumatic and/or hydraulic circuits - equipped with at least one such solenoid-type circuital element.
As is known, so-called "solenoids" (also known by different names, including "induction coils") are used where a movement needs to be imparted to a mass. By appropriately varying an electromagnetic field and exploiting the forces generated according to such variation, the mass is moved and therefore the effects can be exploited (for example in terms of the opening or closing, even partial, of a valve body, or in terms of imparting a fluid flow rate in a circuit).
To guarantee the correct operation and a sufficient degree of controllability and reliability, solenoids of the known type are functionally coupled to other circuital: components typically, coupling with a selective electrical energy supply device (or more simply a "switch") is necessary and coupling is often also necessary with electronic safety devices that interrupt the electric power supply to the solenoid when the latter is overheated.
The functional integrations mentioned above imply various drawbacks, firstly regarding volume manufacturing and their dimensional compacting/miniaturisation.
The drawbacks of integrated functional units of the known type include the fact that whenever thermal protection devices such as "thermistors" (therefore "PTC" or "NTC" type semiconductor devices) are used, the latter must be chosen in a very restricted way with respect to the specific application of the solenoid: the restricted choice, which largely depends on the critical transition temperature of the thermistor's behaviour (which as is known changes its status from being a conductor to an insulator according to reaching a certain threshold temperature), means a very wide range of integrated solenoids has to be designed and produced, which must be differentiated in an economically disadvantageous way according to the different working conditions (activation frequency, maximum environmental temperature to which it may be exposed etc.) to which the solenoid must be subject when installed in a complex product and/or in a circuit.
Again, functional assemblies of the known type are subject to problems connected with the criticality of some assembly operations: in fact, when the thermal protectors and activation switches are structurally integrated, it is not infrequent to impart a substantial thermal shock (for example due to the fact that the components are inserted into a mould into which the plastic which is to contain them is poured) on the circuital components to be integrated, and this thermal shock may be the cause of practically irreversible damage on the "final" assembled product.
In comparison to the prior art and the problems mentioned above, the object of the present invention is therefore to provide an integrated solenoid assembly which performs its main function with great efficiency and speed but which at the same time is very easy and cheap to design and build in volume manufacturing.
More particularly, the object of the present invention is to implement an integrated solenoid assembly which however guarantees excellent activation (both in terms of the effort exerted and in terms of control precision) by the control system into which the assembly itself is integrated.
Again, an object of the present invention is that of designing an integrated solenoid assembly which is both universal i.e. that can be easily assembled on a wide range of complete products (e.g. on valves or on pumps) which can in turn be assembled in hydraulic or pneumatic circuits of a rather different nature. An embodiment of the integrated solenoid assembly according to the invention is now described, by way of non-limiting example, represented in the appended figures, in which:
- figures 1 and 2 show, from different angles, perspective views of the integrated solenoid assembly according to the invention;
- figure 3 shows a front view of the integrated solenoid assembly of figure 1 ;
- figure 4 shows a sectional view of the integrated solenoid assembly according to trace line Ill-Ill of figure 2;
- figure 5 shows a perspective view of a second embodiment of the integrated solenoid assembly according to the invention; and
- figure 6 shows a sectional view of the integrated solenoid assembly according to trace line VI-VI of figure 5.
The integrated solenoid assembly according to the present invention is, as mentioned above, associable with electro valves and/or oscillating electro pumps and, from a structural point of view, essentially comprises an electro inductive element 2 (which in turn defines a predetermined number of turns arranged along an axis of extension 2a) connectible at its respective ends to an electric power supply circuit and a selective activation element 3 (or in other words a switch) operatively active on the electro inductive element 2 for configuring it reversibly at least between an inactive condition - in which an electromagnetic field is not generated - and an active condition - in which an electromagnetic field is generated.
Within the integrated solenoid assembly 1 according to the invention, there is also a thermal protection element 4, which is active on the electro inductive element 2 and/or on the selective activation element 3 for defining an emergency condition thereof in which an electric power supply is interrupted according to reaching a critical temperature: advantageously, the electro inductive element 2, the selective activation element 3 and the thermal protection element 4 are contained in a containment shell 5 which in turn is placed in simultaneous direct contact with the electro inductive element 2, with the selective activation element 3 and with the thermal protection element 4 (hence defining a structural and functional integration between these same components).
Within the spirit of the present invention, the selective activation element 3 and the thermal protection element 4 are positioned "within" the containment shell 5 (i.e. they are inside the volume defined by the containment shell 5 or however in close contact with its internal or external delimiting surfaces) at a portion of the electro inductive element 2 having a maximum working temperature during conditions of use of the integrated solenoid assembly 1 : in this way, the safe working conditions of the integrated assembly 1 are maximised, since any over-heating due to abnormal working conditions is perceived with a practically minimal time delay (or even no delay) and may be translated immediately into the safe switching off of the solenoid itself.
In even more detail and still with reference to the minimisation of the response time, it can be observed that the selective activation element 3 and the thermal protection element 4 are positioned "within" the containment shell 5 (i.e. inside the volume defined by the containment shell 5 or however in close contact with its inner or outer delimiting surfaces) at a median portion of the electro inductive element 2: from a geometric point of view, such median position is defined along the axis of extension 2a at equal distances from the ends of the electro inductive element 2 itself.
Regarding the disposition of volumes of the containment shell 5 and with reference to the appended figures, it can be seen how the latter may comprise a main portion 5a circumscribed to the electro inductive element 2 (this portion is conformed according to a cylindrical body), a base portion 5b connected to the main portion 5a in proximity to at least one end of the electro inductive element (this portion is conformed according to a toroid) and finally a containment portion 5c afforded internally to the main portion 5a and/or the base portion 5b; the containment portion 5c is counter- shaped to the selective activation element 3 and/or to the thermal protection element 4 and, in fact, comprises one or more cavities.
To obtain maximum reliability and compactness, the present invention envisages the selective activation element 3 comprising at least one diode, while the thermal protection element 4 comprises at least one bimetallic relay: the latter choice makes the integrated solenoid assembly very flexible in terms of adaptation, in contrast to the prior art described above (thermistors).
In order to guarantee the correct operation and energy connection, electro connectors 6 are also provided, emerging from the containment shell 5 and circuitally connected at least to the electro inductive element 2: in the appended figures, it can be seen that these electro connectors 6 emerge from the base portion 5b of the containment shell 5.
From the point of view of the method of realisation, it should be underlined that the containment shell 5 is realised through co-moulding on the electro inductive element 2, on the selective activation element 3 and on the thermal protection element 4: this enables extremely fast production operations and also simultaneously allows all the components of the integrated assembly 1 to be equally protected from the external environmental conditions and stabilised in terms of relative position.
It is to be noted that to guarantee an optimal balance between production speed, stabilisation of the various components integrated into the device 1 and maintenance of the various functions of the circuital components integrated into the containment shell 5 during co-moulding, the containment shell 5 itself is co-moulded onto the electro inductive element 2 maintaining an interval of melting and/or moulding temperatures comprised between 240 °C and 260 °C and preferably comprised between 242 °C and 255 °C.
Focusing on the embodiment illustrated in figures 5 and 6, it can be noted that the containment shell 5 may be realised so as to comprise a housing pocket 5a, which in turn may be intended to receive the electro inductive element 2 and/or the selective activation element 3 and/or the thermal protection element 4 (the choice of one or more of these components varies according to the requirements at the time): such pocket may be in any position, for example it may be at a cylindrical external lateral surface of the containment shell 5 or, as shown in figures 5 and 6, the pocket 5a may conveniently be realised at or in proximity to an internal surface of the containment shell 5 (such internal surface is typically preferably a cylindrical external lateral surface).
In more detail, the pocket 5a illustrated in the figures just described defines an axis of insertion parallel to the axis of extension 2a and offset radially with respect to the latter and, furthermore, in the pocket 5a, an insertion opening is defined along such axis of insertion.
Still for the purpose of allowing the structural and functional coupling of the various components of the invention, the pocket 5a further defines housing spaces adapted to allow circuital connections between the electro inductive element 2 and/or the selective activation element 3 and/or the thermal protection element 4 (as can be seen in figures 5 and 6, there may be electrical connections "in series" between the circuital elements just mentioned).
A complex functional assembly is also conveniently part of the present invention, which may for example be a solenoid-type activation electro valve or an oscillating electro pump still activated by one or more solenoids, which include at least one integrated solenoid assembly according to what has been described up to now and according to the following claims.
The invention achieves various advantages with respect to the prior art. Above all, thanks to its peculiar structural architecture - and the consequent possible realisation procedure resulting therefrom - it is possible to minimise the overall dimensions of the finished product, guaranteeing at the same time notable operating reliability and easy and cheap volume manufacturing. Furthermore, the peculiar choice of electronic components used in the present invention allows the degree of "strength" and the application versatility of the integrated solenoid assembly to be greatly increased, since it adapts very easily to different application/operating conditions without any "surgical" changes or choices of components (which further increases the economic value in terms of large scale manufacturing).
In more detail, it must be observed that the notable integration (both in terms of structure and realisation method) of the present invention implies a lower cost and quicker assembly, therefore offering the possibility to supply the integrated solenoid assembly to the customer already accessorised and ready to use, with a thermal protection device calculated exactly based on the critical temperature of the solenoid itself.
At the same time, the presence and special geometry/topology of the encapsulation shell performs the important function of protecting the components inside it: this protection is particularly effective against the thermal shock which occurs when performing the "final" integrative assembly of the solenoid assembly in electro valve bodies or electro pump bodies.
Nevertheless, the adaptability (also in retrofitting) of this solenoid assembly integrated into numerous complex "electro valve" or "pump" product types are further characteristic advantages provided by the structure according to the invention.
Finally, it is clear that additions or variations may be applied to the subject matter of the present invention that are obvious to a person skilled in the art without departing from the scope provided by the appended claims.

Claims

1. An integrated solenoid assembly, preferably associated with electro valves and/or oscillating electro pumps, comprising:
- an electro inductive element (2) defining a predetermined number of turns arranged along an axis of extension (2a) and connectable at its respective ends to an electric power supply circuit;
- a selective activation element (3) operatively active on said electro inductive element (2) for configuring it reversibly between at least an inactive condition in which an electromagnetic field is not generated and an active condition in which said electromagnetic field is instead generated; and
- a thermal protection element (4) active on the electro inductive element (2) and/or on the selective activation element (3) for defining an emergency condition thereof in which an electric power supply is interrupted according to reaching a critical temperature,
characterised in that the electro inductive element (2), the selective activation element (3) and the thermal protection element (4) are contained in a single containment shell (5), said containment shell (5) being in direct simultaneous contact with the electro inductive element (2), with the selective activation element (3) and with the thermal protection element (4).
2. The integrated solenoid assembly according to claim 1 , wherein the selective activation element (3) and the thermal protection element (4) are positioned inside the containment shell (5) at and/or in proximity to a portion of the electro inductive element (2) having a maximum working temperature in conditions of use of the integrated solenoid assembly (1).
3. The integrated solenoid assembly according to claim 2, wherein the selective activation element (3) and the thermal protection element (4) are positioned inside the containment shell (5) at and/or in proximity to a median portion of the electro inductive element (2), said median position being defined along the axis of extension (2a) at equal distances from said ends of the electro inductive element (2) itself.
4. The integrated solenoid assembly according to any one of the preceding claims, wherein the containment shell (5) comprises:
- a main portion (5a) circumscribed to the electro inductive element (2) and conformed according to a cylindrical body;
- a base portion (5b) connected to said main portion (5a) in proximity to at least one end of the electro inductive element and conformed according to a toroid; and
- a containment portion (5c) afforded internally to the main portion (5a) and/or to said base portion (5b) and counter-shaped to the selective activation element (3) and/or to the thermal protection element (4).
5. The integrated solenoid assembly according to any one of the preceding claims, wherein the selective activation element (3) comprises at least one diode.
6. The integrated solenoid assembly according to any one of the preceding claims, wherein the thermal protection element (4) comprises at least one bimetallic relay.
7. The integrated solenoid assembly according to any one of the preceding claims, wherein electro connectors (6) are also provided, emerging from the containment shell (5) and circuitally connected at least to the electro inductive element (2).
8. The integrated solenoid assembly according to claim 7, wherein said electro connectors (6) emerge from the base portion (5b) of the containment shell (5).
9. The integrated solenoid assembly according to any one of the preceding claims, wherein the containment shell (5) is realised through co- moulding on the electro inductive element (2) and/or on the selective activation element (3) and/or on the thermal protection element (4).
10. The solenoid assembly according to any one of the preceding claims, wherein the containment shell (5) comprises a housing pocket (5a) adapted to receive the electro inductive element (2) and/or the selective activation element (3) and/or the thermal protection element (4).
11. The solenoid assembly according to claim 10, wherein said pocket (5a) is realised at an external surface of the containment shell (5), said external surface preferably being a cylindrical external lateral surface.
12. The solenoid assembly according to claim 10, wherein said pocket (5a) is realised at or in proximity to an internal surface of the containment shell (5), said internal surface preferably being a cylindrical internal lateral surface.
13. The solenoid assembly according to claim 12, wherein the pocket (15a) defines an axis of insertion parallel to the axis of extension (2a) and offset radially with respect to the latter, the pocket (5a) preferably defining an insertion opening along said axis of insertion.
14. The solenoid assembly according to claim 13, wherein the pocket (5a) further defines housing spaces adapted to allow circuital connections between the electro inductive element (2) and/or the selective activation element (3) and/or the thermal protection element (4).
15. The complex functional assembly, preferably of the "electro valve" or "electro pump" type, even more preferably of the "oscillating electro pump" type, characterised in that it comprises at least one integrated solenoid assembly (1) according to any one of the preceding claims.
PCT/IT2017/000041 2017-03-01 2017-03-01 Solenoid-type circuital element having integrated layout WO2018158785A1 (en)

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EP17719728.2A EP3589840A1 (en) 2017-03-01 2017-03-01 Solenoid-type circuital element having integrated layout

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4306842A (en) * 1978-06-28 1981-12-22 Jidosha Kiki Co., Ltd. Electromagnetic pumps
US20050219818A1 (en) * 2004-04-06 2005-10-06 Stabile David J Heat sink assembly for a potted housing
WO2013021326A1 (en) * 2011-08-05 2013-02-14 Ceme S.P.A. Electric pump, in particular an oscillating slider type electric pump
EP3589840A1 (en) 2017-03-01 2020-01-08 Ceme S.p.A. Solenoid-type circuital element having integrated layout

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ITGE20120097A1 (en) * 2012-09-25 2014-03-26 A R S Elettromeccanica Srl VIBRATION PUMP

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4306842A (en) * 1978-06-28 1981-12-22 Jidosha Kiki Co., Ltd. Electromagnetic pumps
US20050219818A1 (en) * 2004-04-06 2005-10-06 Stabile David J Heat sink assembly for a potted housing
WO2013021326A1 (en) * 2011-08-05 2013-02-14 Ceme S.P.A. Electric pump, in particular an oscillating slider type electric pump
EP3589840A1 (en) 2017-03-01 2020-01-08 Ceme S.p.A. Solenoid-type circuital element having integrated layout

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