US2622170A - Temperature-relay - Google Patents

Temperature-relay Download PDF

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Publication number
US2622170A
US2622170A US122305A US12230549A US2622170A US 2622170 A US2622170 A US 2622170A US 122305 A US122305 A US 122305A US 12230549 A US12230549 A US 12230549A US 2622170 A US2622170 A US 2622170A
Authority
US
United States
Prior art keywords
magnet
temperature
pole
armature
reeds
Prior art date
Legal status (The legal status 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 status listed.)
Expired - Lifetime
Application number
US122305A
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English (en)
Inventor
Cornelis Hendrik Van Toorn
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
KONINK METAALFAB V H J N DAALD
N V Koninklijke Metaalwarenfabrieken V H J N Daalderop & Zonen
Original Assignee
KONINK METAALFAB V H J N DAALD
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 KONINK METAALFAB V H J N DAALD filed Critical KONINK METAALFAB V H J N DAALD
Application granted granted Critical
Publication of US2622170A publication Critical patent/US2622170A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H37/00—Thermally-actuated switches
    • H01H37/02—Details
    • H01H37/64—Contacts
    • H01H37/66—Magnetic reinforcement of contact pressure; Magnet causing snap action

Definitions

  • the present invention concerns a temperature-relay, called Thermostat, of a simple and robust construction, consisting of few elements and which can close and reopen a circuit immediately.
  • the relay according to the invention consists of a magnet with two poles, while opposite each pole an armature of soft iron is secured, both armatures being mounted on one end of a bimetal reed, the other ends being connected in mutual thermal contact and with a source of current and the two reeds being interconnected by a rod so that one of the reeds in the initial cold position of the relay is pressed with pretension against the magnet and by heating the two bimetal reeds are bent in the same direction, i. e. one reed by removing itself from and the other by approaching the magnet.
  • 1 represents a plan view of one form of execution
  • Fig. 2 gives a view in detail of the magnet
  • Fig. 3 shows a modification of the magnet shown in Fig. 1.
  • FIG. 1 it can be seen that with I is shown an anisotropic magnet, mounted in a box 2 of soft iron, consisting of two parts 2a and 2b, at the same time-forming the two poles. On both sides of this magnet the two bimetal reeds 3 and 4 are arranged, each of them being fitted with armatures of soft iron 5 and 6. In dotted lines the position of the two reeds in cold state is shown in Fig. 1, if the magnet were not placed between the two reeds. In this way the armature 6 is pressed with pretension against the magnet I.
  • Fig. 2 a section of the armature. It can be seen, that on this armature 6 a contact l of argentan is mounted, which sticks :0.1 mm. but of the inner face of the armature.
  • the other ends of the reeds are fixed on a block of copper 9 fitted with a contact screw H] for the connection of this block with a pole of an alternate current-circuit (not drawn).
  • the reeds 3 and 4 are interconnected by a bar H, fixed on the reed 4, but being able to slide in a slot of the reed 3.
  • a strap I4 is arranged in order to limit the deflection of the reeds 3 and 4 arranged.
  • Th reeds 3 and 4 are formed in such a way that when being heated they will bend in the same direction, while the reed 4 is moved from the magnet and the reed 3 towards the magnet.
  • the reed 4 is formed so that at a temperature of 85 C. it has obtained such a tension that it disengages itself from the magnet taking along with it the reed 3, which is pressed against the other pole of the magnet. So the contact 12 and I3 fixed respectively to the bar II and the other pole of the circuit are removed from each other and the current is interrupted. The temperature of the water will fall from 85 to C. By this cooling the reed 3 has obtained a tension which removes it from the magnet immediately, interrupting the contact with the magnet.
  • the box of the magnet 2 and the block 9 are fixed on' a foundation plate of isolating material.
  • the contact I3 is isolated from the box 2 (2a and 2b).
  • a permanent magnet and pole assembly forming at least one gap in the magnetic flux path; two elongated flexible members, one end of one member being rigidly connected to one end of the other member; two armatures carried by said members and adapted to alternately close said gap at two spaced positions, respectively, said two elongated flexible members being temperature-responsive so as to generate a relative movement between themselves and said permanent magnet and pole assembly; and control means actuated by said relative movement.
  • a permanent magnet and pole assembly forming at least one gap in the magnetic flux path; two elongated flexible members, one end of one member being rigidly connected to one end of the other member; means slidably connecting said two members between two limits; two armatures carried by said members and adapted to alternately close said gap at two spaced positions, respectively, saidtwo elongated flexible members being temperature-responsive so as to generate a relative movement between themselves and said permanent magnet and pole assembly; and control means actuated by said relative movement.
  • a permanent magnet and pole assembly forming at least one gap in the magnetic flux path; two elongated flexible members, one end of one member being rigidly connected to one end of the other member; a rod rigidly connected to one of said members and slidably engaging the other of said members between two stops; two armatures carried by said members and adapted to alternately close said gap at two spaced positions, respectively, said two elongated flexible members being temperature-responsive so as to generate a relative movement between themselves and said permanent magnet and pole assembly; and control means actuated by said relative movement.
  • a permanent magnet and pole assembly forming two gaps in the magnetic flux path; two bimetallic reeds; an element connected to one end of said reeds, said bimetallic reeds being arranged so that their free ends tend to move in the same direction in response to a change in temperature; two armatures carried by said reeds and adapted to alternately close said air gaps at two spaced positions,
  • control means actuated by the movement of at least one of said reeds.
  • a permanent magnet and pole assembly forming at least one gap in the magnetic flux path; two elongated flexible members, one end of one member being rigidly connected to one end of the other member; two armatures carried by said members and adapted to alternately close said gap at two spaced positions, respectively, said two elongated flexible members being temperature-responsive so as to generate a relative movement between themselves and said permanent magnet and pole assembly and an electric circuit controlled by said relative movement.
  • a permanent magnet and pole assembly forming at least one gap in the magnetic flux path; two elongated flexible members, one end of one member being rigidly connected to one end of the other member; two armatures carried by said members and adapted to alternately close said gap at two spaced positions, respectively, said two elongated flexible members being temperature-responsive so as to generate a relative movement between themselves and said permanent magnet and pole assembly; an electric control circuit; a first contact in said circuit carried by said magnet and pole assembly; and a second contact in said circuit carried by one of said flexible members and adapted to make contact with said first, contact when said flexible member closes said gap.
  • a permanent magnet and pole assembly forming at least one gap in the magnetic flux path; two elongated flexible members, one end of one member being rigidly connected to one end of the other member; two armatures carried by said members and adapted to alternately close said gap at two spaced positions, respectively, said two elongated flexible members being spring-loaded and temperature-responsive so as to generate a relative movement between themselves and said permanent magnet and pole assembly; and control means actuated by said relative movement.
  • a permanent magnet of anisotropic metal in a temperature control device, a permanent magnet of anisotropic metal; two U-shaped pole pieces forming an air gap therebetween oppositely arranged on said magnet and projecting beyond the sides of the magnet; two elongated flexible members, one end of one member, being rigidly connected to one end of the other mem- CORNELIS HENDRIK VAN 'IOORN.

Landscapes

  • Thermally Actuated Switches (AREA)
  • Switches That Are Operated By Magnetic Or Electric Fields (AREA)
  • Electromagnets (AREA)
US122305A 1949-02-04 1949-10-19 Temperature-relay Expired - Lifetime US2622170A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL144691 1949-02-04

Publications (1)

Publication Number Publication Date
US2622170A true US2622170A (en) 1952-12-16

Family

ID=19750466

Family Applications (1)

Application Number Title Priority Date Filing Date
US122305A Expired - Lifetime US2622170A (en) 1949-02-04 1949-10-19 Temperature-relay

Country Status (7)

Country Link
US (1) US2622170A (en, 2012)
BE (1) BE491071A (en, 2012)
CH (1) CH278117A (en, 2012)
DE (1) DE837420C (en, 2012)
FR (1) FR1102471A (en, 2012)
GB (1) GB670804A (en, 2012)
NL (1) NL70768C (en, 2012)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2719894A (en) * 1953-01-19 1955-10-04 Missouri Automatic Contr Corp Two-stage thermostat
US4365506A (en) * 1980-12-22 1982-12-28 Trw Inc. Remotely operated downhole test disconnect switching apparatus

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1798854A (en) * 1926-11-25 1931-03-31 Satchwell Leonard Thermostat
US2030933A (en) * 1933-10-16 1936-02-18 Penn Electric Switch Co Magnet switch
US2143085A (en) * 1936-06-26 1939-01-10 Automatic Control Corp Motor protector
US2451535A (en) * 1943-01-29 1948-10-19 Gen Motors Corp Multiple control

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1798854A (en) * 1926-11-25 1931-03-31 Satchwell Leonard Thermostat
US2030933A (en) * 1933-10-16 1936-02-18 Penn Electric Switch Co Magnet switch
US2143085A (en) * 1936-06-26 1939-01-10 Automatic Control Corp Motor protector
US2451535A (en) * 1943-01-29 1948-10-19 Gen Motors Corp Multiple control

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2719894A (en) * 1953-01-19 1955-10-04 Missouri Automatic Contr Corp Two-stage thermostat
US4365506A (en) * 1980-12-22 1982-12-28 Trw Inc. Remotely operated downhole test disconnect switching apparatus

Also Published As

Publication number Publication date
NL70768C (en, 2012)
FR1102471A (fr) 1955-10-21
DE837420C (de) 1952-04-28
BE491071A (en, 2012)
CH278117A (de) 1951-09-30
GB670804A (en) 1952-04-23

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