Hydraulic valve

Patent metadata

Field	Value
Publication number	US-2016265689-A1
Application number	US-201615066242-A
Country	US
Kind code	A1
Filing date	Mar 10, 2016
Priority date	Mar 12, 2015
Publication date	Sep 15, 2016
Grant date	—

Abstract

A hydraulic valve includes a valve housing ( 4 ) with an inside that defines at least one first flow path ( 7 ), and with a valve insert ( 16 ) which is arranged in the inside of the valve housing ( 4 ). The valve insert ( 16 ) includes a movable valve element ( 14 ) situated in the first flow path ( 7 ). An infrared temperature sensor ( 46 ) is arranged on or in the valve housing ( 4 ) and is directed onto a surface of the valve insert ( 16 ) or a surface of a thermal conductor ( 48 ) connected to the valve insert. A hydraulic manifold may be provided with such a hydraulic valve.

First claim

What is claimed is:

1 . A hydraulic valve comprising:
a valve housing with an interior defining at least one flow path; a valve insert arranged in the inside of the valve housing, the valve insert comprising a movable valve element situated in the flow path; and an infrared temperature sensor arranged on or in the valve housing, the infrared temperature sensor being directed onto a surface of the valve insert or onto a surface of a thermal conductor connected to the valve insert.

2 . A hydraulic valve according to claim 1 , wherein the at least one flow path is a first flow path and a second flow path, which is separate from the first flow path is formed in the valve housing.

3 . A hydraulic valve according to claim 1 , wherein the valve housing is manufactured of plastic or a plastic-composite material.

4 . A hydraulic valve according claim 1 , wherein at least a section of the valve insert, on which the surface is located, onto which the infrared temperature sensor is directed, or the thermal conductor is formed from a material which comprises a greater thermal conductivity than the material of the valve housing.

5 . A hydraulic valve according claim 1 , wherein the valve insert or the thermal conductor or both the valve insert and the thermal conductor are thermally insulated with respect to the valve housing.

6 . A hydraulic valve according claim 1 , wherein the valve insert at least in a section, on which the surface is situated, onto which the infrared temperature sensor is directed, or with which section the thermal conductor is in contact, is manufactured from metal or a thermally conductive plastic composite material.

7 . A hydraulic valve according claim 1 , wherein a component of the valve insert which comprises the surface, onto which the infrared temperature sensor is directed, or with which component the thermal conductor is in contact, is configured, in a region distanced to the surface or to the thermal conductor, in direct contact with a fluid located in the flow path.

8 . A hydraulic valve according claim 1 , wherein a component of the valve insert which has the surface, onto which the infrared temperature sensor is directed or with which component the thermal conductor is in contact, is situated outside the flow path, in a region which is sealed with respect to the flow path.

9 . A hydraulic valve according claim 1 , wherein the valve insert further comprises a carrier element, in which the valve element is movably mounted, wherein the carrier element is manufactured of metal or a plastic-composite material.

10 . A hydraulic valve according to claim 9 , wherein the carrier element is inserted into a valve receiver of the valve housing and at least one seal is arranged between the carrier element and the valve housing.

11 . A hydraulic valve according to claim 9 , wherein the valve element is mounted in the carrier element on a spindle drive or gear drive.

12 . A hydraulic valve according claim 1 , wherein the valve housing comprises an electronics receiving space, in which the infrared temperature sensor is arranged on a circuit board.

13 . A hydraulic valve according to claim 12 , further comprising an electrical drive which moves the valve element, and electronic components which activate the electrical drive, the electrical drive and the electronic components being arranged in the electronics receiving space.

14 . A hydraulic valve according to claim 12 , wherein the electronics receiving space is separated from the valve receiver by a wall which is configured as one piece with the valve housing.

15 . A hydraulic valve according to claim 13 , wherein the electronics receiving space is separated from the valve receiver by a wall which is configured as one piece with the valve housing.

16 . A hydraulic valve according to claim 14 , further comprising an optical connection, wherein a window is formed in the wall, through which window an optical connection from the infrared temperature sensor to the surface of the valve insert is provided, or the thermal conductor extends through the wall.

17 . A hydraulic manifold for use in a hydraulic heating system or cooling system or both a hydraulic heating and cooling system with one or more hydraulic valves comprising:
a valve housing with an interior defining at least one flow path; a valve insert arranged in the inside of the valve housing, the valve insert comprising a movable valve element situated in the flow path; and an infrared temperature sensor arranged on or in the valve housing, the infrared temperature sensor being directed onto a surface of the valve insert or onto a surface of a thermal conductor connected to the valve insert.

18 . A hydraulic manifold comprising a plurality of hydraulic valves which are connected to one another in a manner such that at least flow paths of the hydraulic valves are connected to one another, at least one of the valves comprising:
a valve housing with an interior defining at least a portion of one of the flow paths; a valve insert arranged in the inside of the valve housing, the valve insert comprising a movable valve element situated in the flow path; and an infrared temperature sensor arranged on or in the valve housing, the infrared temperature sensor being directed onto a surface of the valve insert or onto a surface of a thermal conductor connected to the valve insert.

19 . A hydraulic manifold according to claim 18 , wherein the at least one flow path is a first flow path and a second flow path, which is separate from the first flow path is formed in the valve housing.

20 . A hydraulic manifold according to claim 18 , wherein the valve housing is manufactured of plastic or a plastic-composite material.

Assignees

• Grundfos Holding As

Inventors

• Sørensen Søren Emil
• Hovmand Per
• Mikkelsen Steen
• Milthers Jens Kjaer
• Jensen Kim Hulegaard
• Aarestrup Jan Carøe

Classifications

• F16K51/00 Primary

  Other details not peculiar to particular types of valves or cut-off apparatus · CPC title

• F16K31/02

  electric {(F16K31/004 takes precedence)}; magnetic · CPC title

• F16K27/00

  Construction of housing (methods for welding housings B23K); Use of materials therefor · CPC title

• F24D3/1066

  Distributors for heating liquids · CPC title

• F24D2220/0264

  Hydraulic balancing valves · CPC title