Valve body for an expansion valve

Patent metadata

Field	Value
Publication number	US-12313166-B2
Application number	US-202117540215-A
Country	US
Kind code	B2
Filing date	Dec 1, 2021
Priority date	Dec 3, 2020
Publication date	May 27, 2025
Grant date	May 27, 2025

Abstract

A valve body of an expansion valve for an air-conditioning system, a battery cooler, and/or an oil cooler of a motor vehicle may comprise a valve needle and a spring. The valve needle and the spring may be integrally provided as a single component.

First claim

The invention claimed is:

1. A valve body of an expansion valve for an air-conditioning system, a battery cooler, and/or an oil cooler of a motor vehicle, the valve body comprising a valve needle and a spring, wherein:
the valve needle and the spring are integrally provided as a single component;
the spring includes at least one meander-shaped arm integrally connected to the valve needle;
the at least one meander-shaped arm includes a plurality of arcs disposed one after another; and
adjacent arcs of the plurality of arcs are oriented in opposite directions.

2. The valve body according to claim 1 , wherein:
the at least one meander-shaped arm includes two meander-shaped arms; and
the two arms are each integrally connected to the valve needle at one end and to a support ring at the other end.

3. The valve body according to claim 2 , wherein the two arms extend, meandering, opposite to one another.

4. The valve body according to claim 1 , wherein the valve needle includes a collar and a conical valve face.

5. The valve body according to claim 4 , wherein the valve needle and the spring are configured as an integral, plastic injection moulded part.

6. The valve body according to claim 4 , further comprising a longitudinal groove extending from the collar via the valve needle to the valve face.

7. The valve body according to claim 1 , further comprising a support ring including an opening via which fluid is conductible, wherein the at least one meander-shaped arm includes two meander-shaped arms that are each integrally connected to the valve needle at one end and integrally connected to the support ring at the other end.

8. The valve body according to claim 1 , wherein:
the at least one meander-shaped arm includes two meander-shaped arms;
the plurality of arcs includes (i) a plurality of first arcs that open in a first direction and (ii) a plurality of second arcs that open in a second direction opposite the first direction;
the plurality of first arcs and the plurality of second arcs are disposed one after another in an alternating manner such that the two arms are each meander-shaped; and
a first arm of the two arms and a second arm of the two arms meander opposite one another such that (i) the plurality of first arcs of the first arm and the plurality of second arcs of the second arm are aligned and (ii) the plurality of second arcs of the first arm and the plurality of first arcs of the second arm are aligned.

9. The valve body according to claim 1 , further comprising:
a collar configured to engage a valve guide body, the collar disposed axially between the valve needle and the spring, the collar projecting radially beyond the valve needle; and
a support ring configured to engage a permanent magnet;
wherein the at least one meander-shaped arm includes two meander-shaped arms; and
wherein the two arms are integrally connected to the collar at a first end and are integrally connected to the support ring at a second end.

10. A rotor of an expansion valve, comprising:
a valve body including a valve needle and a spring, the valve needle and the spring integrally provided as a single component;
a valve body guide; and
a permanent magnet body;
wherein the permanent magnet body, together with the valve body and the valve body guide, define a pre-assembled assembly;
wherein the valve needle includes a collar and a conical valve face; and
wherein the valve body includes a longitudinal groove extending from the collar, via the valve needle, to the valve face.

11. The rotor according to claim 10 , wherein:
the spring includes at least one meander-shaped arm-includes including a plurality of arcs disposed one after another; and
adjacent arcs of the plurality of arcs are oriented in opposite directions.

12. The rotor according to claim 10 , wherein the valve body, with the valve needle, is guided free of play in the valve body guide.

13. The rotor according to claim 10 , wherein:
the valve body further includes a support ring;
the spring includes two arms;
the two arms are each integrally connected to the valve needle at one end and integrally connected to the support ring at the other end; and
the two arms each include a plurality of arcs disposed one after another such that the two arms are each meander-shaped.

14. An expansion valve for an air-conditioning system, a battery cooler, and/or an oil cooler of a motor vehicle, the expansion valve comprising:
a housing;
a valve seat; and
a valve body interacting with the valve seat;
wherein the valve body includes a valve needle and a spring, the valve needle and the spring integrally provided as a single component;
wherein the spring includes at least one arm integrally connected to the valve needle; and
wherein the at least one arm includes a plurality of arcs disposed one after another such that the at least one arm is meander-shaped.

15. The expansion valve according to claim 14 , further comprising a sensor structured and arranged to detect a position of the valve body.

16. An air-conditioning system of a motor vehicle, comprising the expansion valve according to claim 14 .

17. The expansion valve according to claim 14 , wherein the valve needle includes a conical valve face abutting the valve seat.

18. The expansion valve according to claim 14 , wherein:
the at least one arm includes two arms; and
the valve body includes a support ring integrally connected to the two arms opposite the valve needle.

19. The expansion valve according to claim 18 , wherein the valve needle includes a collar integrally connected to the two arms opposite the support ring.

20. The expansion valve according to claim 19 , wherein:
the support ring includes an opening via which a fluid is conductible;
the valve needle includes a conical valve face abutting the valve seat; and
the valve needle further includes a longitudinal groove configured to conduct the fluid, the longitudinal groove extending from the collar to the valve face.

Assignees

• Mahle Int Gmbh

Inventors

• Van Delden Jeffrey
• Lindenberg Matthias
• Wetzel Florian

Classifications

• F16K37/0033 Primary

  using a permanent magnet, e.g. in combination with a reed relays · CPC title

• F16K31/084

  the magnet being used only as a holding element to maintain the valve in a specific position, e.g. check valves (F16K31/082, F16K31/086 take precedence) · CPC title

• B60H2001/3286

  Constructional features · CPC title

• F16K2200/305

  Constructional features of springs · CPC title

• F16K31/047

  characterised by mechanical means between the motor and the valve, e.g. lost motion means reducing backlash, clutches, brakes or return means (F16K31/043 takes precedence) · CPC title