CN2041436U

CN2041436U - Adjustable bimetallic temp. controller

Info

Publication number: CN2041436U
Application number: CN 88211881
Authority: CN
Inventors: 姜杰
Original assignee: Individual
Current assignee: Individual
Priority date: 1988-06-08
Filing date: 1988-06-08
Publication date: 1989-07-19

Abstract

The utility model discloses an adjustable bimetallic temperature controller, comprising two pieces of bimetallic pieces, two contact tips, two roots of conductor wires, an adjusting device and a housing. The utility model which has the advantages of simple structure, long service life and high sensitivity and accuracy can be adjusted conveniently from-20 DEG C to +350 DEG C, and is an enclosed type temperature controller with good rotproofness. The utility model is suitable to control the temperature of a domestic appliance, a boiler, a motor, a chemical reactor and various solutions.

Description

Adjustable bimetallic temp. controller

The utility model belongs to a kind of temperature controller, specifically a kind of adjustable type bimetallic temperature controller.

Usually electric contact liquid-in-glass thermometer and electronic relay equal controller adapted are used for various thermostatic controls, though temperature control is accurate, highly sensitive, because the temperature-controlled scope is narrow and fragile, a lot of occasions are just inapplicable.That bimetal controller has is simple in structure, reliable, long service life and cost low advantage, widespread use.Commercially available flashing temperature-control device adopts the monolithic bimetallic strip of no arcing, the Control work temperature is usually divided low form below 180 ℃ and the middle warm type below 300 ℃, regulate by controlling temperature by the governor motion of forming by silk braid and fine adjustment screw, this temperature controller adjustable temperature scope is also narrower, reach (daily-use electrical appliance serviceable life 35000 times, 4,21,1983).The indicator type bimetallic system cell that Changzhou thermal meter factory produces is only applicable to-50 ℃～+ 70 ℃, and the temperature control scope of this class temperature controller is definite after product approval, and the user can't adjust the temperature control point as required more voluntarily, brings limitation to use undoubtedly.So sensitive, reliable, simple, long-life and the closed type temperature controlled device that can arbitrarily adjust are still people problem to be solved.

The utility model principle is to adopt the bimetallic strip of two arcs, the contact that one correspondence is respectively arranged between the bimetallic strip of two arcs, insulate between bimetallic strip and the contact, distance can be adjusted by the extension governor motion that is connected with bimetallic strip between two contacts.Drawing lead from contact is connected with binding post.Bimetallic strip, contact, lead and governor motion all place the metal shell of sealing, the equal and casing insulation of contact and lead.When being heated, temperature controller make bimetallic strip produce tension force.When reaching design temperature, tension force is enough to make two contacts to open, and makes down circuitry; Reduce to temperature control point when following when temperature, bimetallic strip shrinks because of cold, thereby makes the closed again energising of contact.Realize from temperature control so repeatedly.Can regulate distance between two contacts by regulating device, in certain temperature range, regulate the temperature control purpose arbitrarily to reach.

Adjustable type bimetallic temperature controller of the present utility model is by two arc bimetallic strips, respectively there is a contact in each bimetallic strip back of a bow portion, two leads that are connected with binding post on the shell with contact are respectively regulated the governor motion and the metal shell of distance between the contact on the arc bimetallic strip and are formed.

Contact in the adjustable type bimetallic temperature controller of the present utility model preferably adopts silver or silver-plated contact.Contact is fixed on the arc bimetallic strip back of a bow protuberance by insulator, the lead of drawing from contact be fixed on shell on and link to each other with the binding post of casing insulation.During temperature control, no current passes through bimetallic strip all the time.

Governor motion of the present utility model can be that the extension screw rod, knob and the index dial that are connected with bimetallic strip one end are formed.This screw rod one end is connected with two bimetallic strips respectively, the other end that passes the index dial center pit is connected with knob, adjusting knob can be controlled distance between the bimetallic strip upper contact by screw rod, thereby reaches the purpose of temperature control, and range of adjustment can directly show from index dial.Change temperature controlling point as user oneself, and exceed temperature scale range on the index dial, numerical value should corresponding change on the index dial.

Screw rod also can pass through shell wainscot relative fixed, but can free turn.Also can be that a pair of screw rod by internal and external threads is formed.

Two arc bimetallic strips described in the utility model can be that a slice bimetallic strip processing bending forms, also can be by two small pieces arc bimetallic strips respectively rivet welding form.The bottom of bimetallic strip can be by riveted, be welded on the outer casing bottom, and the riveted place is the temperature-sensitive sensitizing range.

Can there be spiral tooth socket the outside of the utility model shell, so that temperature controller can be fixed in the equipment or object that needs temperature control.For ease of installation and maintenance, shell also can be divided into two partly, the shell of main built-in bimetallic strip and the shell of regulating device.Described metal shell preferably adopts copper or stainless steel material.

Adjustable type bimetal strip thermostat of the present utility model, not only simple in structure, cost is low, is active in one's movements, accurately, and the repetition rate error is less than 2%, and serviceable life is greater than 10 ⁶Inferior, and can be between-20 ℃～+ 350 ℃ regulated at will, it is very convenient to change temperature-control range, whole temperature controller is closed, anti-corrosive properties are good.Be applicable to all temperature control occasions such as temperature control of household electrical appliance, boiler, motor, chemical reactor and various solution.

The utility model can further be understood by following accompanying drawing and example.

Fig. 1 is a kind of adjustable type bimetal strip thermostat structural representation.

Fig. 2 is an adjustable type bimetal strip thermostat side view.

1 is the arc bimetallic strip among the figure, the 2nd, and contact, the 3rd, lead, the 4th, shell, the 5th, inner screw, the 6th, screw, the 7th, external screw rod, the 8th, index dial, the 9th, knob, the 10th, the wainscot of shell, the 11st, insulator, the 12nd, binding post, the 13rd, the thread on the shell.

Fig. 1 is adjustable bimetal strip thermostat structural representation.Wherein two arc bimetallic strip (1) one ends are fixing by riveting method and shell (4).Between contact (2) on the arc bimetallic strip back of a bow teat and the thermometal insulator (11) is arranged, and be fixed on the arc bimetallic strip.Contact is connected with binding post on the shell (4) with lead (3).Binding post and shell separate with insulator.But lead is overcoat porcelain tube and the insulation of other parts also.Female external screw rod (7) is fixed on the wainscot (10) of shell, but rotatable, and passes index dial (8) center pit in knob (9).Knob is connected with screw (6), and the screw other end contacts with inner screw (5) in outer tube.Turning knob moves up and down screw in outer tube, the screw rod that links to each other with the arc bimetallic strip is moved up and down, and just reaches to regulate the purpose that distance is promptly regulated temperature control between the contact.(13) be thread on the shell, be used for the installation of temperature controller.

Fig. 2 is a kind of side view of adjustable bimetal strip thermostat, and explanatory note as described in Figure 1.Shell has spiral tooth socket.Housing parts is analysed and observe among this figure, to show built-in arc bimetallic strip, contact and lead.

Claims

1, a kind of adjustable type bimetal strip thermostat of forming by bimetallic strip, binding post, shell and regulating device, it is characterized in that described bimetallic strip is two arc bimetallic strips, governor motion is made up of knob, index dial and screw rod, shell is a metal shell, also have two contacts that are loaded on the arc bimetallic strip, two leads that connect contact and two binding posts respectively.

2, adjustable type bimetal strip thermostat as claimed in claim 1 is characterized in that screw rod is a pair of screw rod that internal and external threads is arranged.

3, adjustable type bimetal strip thermostat as claimed in claim 1 is characterized in that described contact is silver or silver-plated.

4, adjustable type bimetal strip thermostat as claimed in claim 1 is characterized in that there is spiral tooth socket the outside of described metal shell.