CN201149837Y

CN201149837Y - Adjusting temp controller

Info

Publication number: CN201149837Y
Application number: CNU2008200823174U
Authority: CN
Inventors: 方火峰
Original assignee: Individual
Current assignee: Individual
Priority date: 2008-01-15
Filing date: 2008-01-15
Publication date: 2008-11-12
Anticipated expiration: 2018-01-15

Abstract

An adjustable temperature controller comprises a shell body (1) with a through hole (11), a temperature regulating device which is provided with a regulating screw rod (42) arranged in the through hole (11), as well as a linkage mechanism which takes a double sheet metal (6) as a temperature sensing element. The utility model is characterized in that a metal nut (41) spirally matching with the regulating screw rod (42) is arranged in the through hole (11); the controller also comprises a flexible thermostat film (5) which is supported against the tail part of the regulating screw rod (42); one end of the flexible thermostat film (5) is fixed inside the shell body (1), while the other end is a movable end which is supported against the internal part (61) of the central bending surface of the double sheet metal (6). The utility model exerts pressure on the double sheet metal through the thermostat film to improve the thermostat precision, as no current passes through the thermostat film to cause softening; besides, the copper nut is inlaid and fixed inside the shell body in the molding process of the shell body, so that the nut and the shell body are integrated and the metal thread is not easy to wear so as to improve the service life of the product.

Description

Adjusting temperature controller

Technical field

The utility model relates to a kind of thermostat, particularly relates to a kind of adjusting temperature controller that can be applicable on temperature controls such as water heater, microwave oven, drying cabinet, air-conditioning, Aero-Space or protection equipment and the instrument.

Background technology

Thermostat is the through and off that promote the contact with the pressure action principle, thus the electric equipment that control apparatus equipment stops when reaching uniform temperature or starts working.Common thermostat mostly is adjusting temperature controller at present, promptly can adjust the break-make of thermostat under different temperatures by the temperature sensitive member of regulating thermostat itself.As the existing patent No. is the improvement technology that the Chinese utility model " adjusting temperature controller " of ZL00218075.8 relates to a kind of thermostat; be applicable in the control room or casing in air themperature, automatic equipment and household electrical appliance heating and temperature control and protection; it is made up of pedestal, adjusting rod, component of thermo bimetal, reed contact assembly, adjustment screw and two binding posts etc.; be processed with screw hole or screwed hole on the circuit exit of binding post, it connects connections such as being improved to screw-nut by original insertion.Upper and lower at exit respectively is processed with two little blocks simultaneously.This utility model can guarantee that the circuit contact is good, guarantees controlled device safety, eliminates disaster hidden-trouble.

But, there is the same problem in described patent with other common adjusting temperature controllers of the prior art, the screw thread that is temperature adjustment screw rod and bakelite housing self directly cooperates, as everyone knows, metal screw and bakelite threaded engagement, resistance to wear is very poor, after using several times, the bakelite housing can wear and tear and make screw rod loosening, thereby causes adjustment inaccurate, and the useful life of temperature adjustment nut is low.In addition, common adjusting temperature controller generally is to regulate temperature by the pressure of screw adjusted reed, when electric current passes through reed, owing to the self-resistance reason causes the reed heating, reed softens because of heating, pressure can reduce, and causes temperature deviation big, unstable, can't satisfy high-precision requirement too.

The utility model content

Technical problem to be solved in the utility model is to provide a kind of temperature adjustment precision height at above-mentioned prior art present situation, can improve the adjusting temperature controller in the useful life of temperature adjustment nut.

The utility model solves the problems of the technologies described above the technical scheme that is adopted: this adjusting temperature controller includes

But the housing of a temperature-sensitive has a through hole on the housing;

One temperature-adjusting device includes the adjusting screw(rod) that is arranged in the described screwed hole; And

One is the link gear of temperature-sensing element with the bimetal leaf;

It is characterized in that: be set with in the described through hole one can with the described adjusting screw(rod) metal nuts that cooperates of spiral mutually, and described temperature-adjusting device also includes one and the elasticity temperature regulating piece that offsets at afterbody of described adjusting screw(rod), described temperature regulating piece one end is fixed in the described housing, the other end is a movable end, and the center curvature face inside of described movable end and described bimetal leaf offsets.

Described metal nuts can adopt variety of way of the prior art to be fixed in the described housing through-hole, preferably, and can be one-body molded by mosaic mode and described housing in the process of housing machine-shaping.

When external equipment when reaching certain temperature; in order to prevent that excess temperature from damaging electrical equipment; need by the excess temperature power-off protection of link gear realization electrical equipment; described link gear can adopt various prior aries; preferably; can adopt and include the first terminal that is connected in the electric heating loop; first reed and push rod; the center curvature face inside of one end of described push rod and described bimetal leaf offsets; the other end of described push rod and described first reed offset; one end of described first reed has first moving contact; described the first terminal has fixed contact with the corresponding position of described first moving contact; when described bimetal leaf generation back-flexing kick, described push rod has and upwards contacts described first reed and make the trend that described first moving contact and fixed contact are separated from each other.

Described terminal can have one, two, single or more according to the different circuit requirements of external connection electrical apparatus equipment, simply for including the sub-set-up mode of both-end of the first terminal and second terminal, described fixed contact is arranged on the first terminal, the other end of described second terminal and described first reed is fixed by welding or other connected modes, like this, under normal condition, the first terminal and second terminal are just by the first reed conducting.

Because described second terminal and described first reed are fixing by welding, in order to reduce both contact resistances, described second terminal adopts the thick pure iron material of 1.5mm, described first reed adopts the thick import beryllium-bronze material of 0.15mm, when big electric current passes through, just can reduce caloric value effectively, and obtain better heat radiating effect.

In order to connect more branch circuit, can also in housing, be provided with the 3rd terminal, between described second terminal of described the 3rd terminal, also be provided with second reed with second moving contact, between described second reed and the contacted position of described second terminal, also be provided with an insulating trip, be fixed with a metallic support shell fragment of being close to described second reed on the described insulating trip again, connect by an adjustment screw between described second reed and the housing; When described push rod backs down described first moving contact and fixed contact under the state that separates, second moving contact of described second reed has and the contacted trend of described first moving contact.

For with in two terminal stationary housings, can adopt various fixedly connected modes, simply, the described the first terminal and second terminal can be fixedly connected in the described housing by rivet.

When thermostat bearing great current or high voltage, for fear of producing the arcing phenomenon, described bimetal leaf adopts the major diameter bimetal leaf of 25.4mm, so, when the control uniform temp, the bimetal leaf deformation radian that diameter is big more is big more, and the distance of backing down between described moving contact and the fixed contact is increased, and has guaranteed the useful life of thermostat.

For the variation of temperature sensor in time, can be fixed with aluminum hull in the bottom at described housing, described bimetal leaf correspondingly is contained in to be offered in the reeded aluminum hull, as long as when extraneous heat is passed to described aluminum hull, the bimetal leaf that is arranged in the aluminum hull will be sensed variations in temperature, and then the generation rebound deformation, and then mobile putter makes dynamic and static contact separation, makes the electric heating element outage.

In order to guarantee the sealing of housing, and be convenient to the dismounting maintenance, described housing can also be fixedly connected with a capping on top.

For the ease of reading temperature controlled numerical value, make things convenient for the adjustment of temperature, on described adjusting screw(rod), can also be arranged with plastics that are used for the adjustment indication and regulate pointer.

Compared with prior art, advantage of the present utility model is: this thermostat is bimetal leaf to be exerted pressure by temperature regulating piece (spring steel material) by adjusting nut, and temperature regulating piece self does not have electric current to pass through, and does not have ruckbildung, has improved the temperature adjustment precision; Secondly, the mode that described adjusting nut adopts, in the process of housing moulding, copper nut inlayed and be fixed in the housing, make it become as a whole with housing, when in temperature adjustment, metal screw directly and copper nut bronze drum thread matching structure can up-down adjustment, metal threaded not easy to wear, the useful life of having improved product greatly.Therefore, adopt the thermostat of this patent structure to have carrying operating current big (reaching as high as 80A), precision height (can be accurate to ± 2 ℃) and long advantages such as (useful life are more than 100,000 times) of life-span, and have controllable adjustment function from the main regulation temperature.

Description of drawings

Fig. 1 is the structural representation of the utility model embodiment one.

Fig. 2 is that A-A shown in Figure 1 is to cutaway view.

Fig. 3 is the structural representation of the utility model embodiment two.

Fig. 4 is that B-B shown in Figure 3 is to cutaway view.

Embodiment

Embodiment describes in further detail the utility model below in conjunction with accompanying drawing.

Referring to Fig. 1, Fig. 2, be embodiment one:

This thermostat mainly is applicable to high-power water heater, include bakelite housing 1, aluminum hull 2 and capping 3, wherein, described aluminum hull 2 is fixedly connected on the bottom of housing 1, housing 1 is provided with capping 3 at the top, described aluminum hull 2 is because adopted aluminum alloy materials, and it has, and resistance to wear is good, intensity is high, on-deformable advantage, and has good thermal conductivity.

Wherein, offer through hole 11 on the housing 1, inlay in the through hole 11 and be fixed with metal nuts 41, temperature adjustment screw rod 42 is located in the through hole 11, and can cooperate with the screw type threaded adjusting of realization between the metal nuts 41, for the ease of reading temperature value, on adjusting screw(rod) 42, also be arranged with plastics that are used for the adjustment indication and regulate pointer 43; Described adjusting screw(rod) 42 offsets at afterbody and an elasticity temperature regulating piece 5, temperature regulating piece 5 one ends are fixed in the described housing 1, the other end is a movable end, bimetal leaf 6 (being commonly called as video disc) as temperature-sensing element is contained on the aluminum hull 2 that is provided with groove 21, bimetal leaf 6 has center curvature face inner 61 and center curvature face outside 62, and described movable end offsets with center curvature face inside 61 as the bimetal leaf 6 of temperature-sensing element.For fear of producing the arcing phenomenon, described bimetal leaf 6 adopts the major diameter bimetal leaf of 25.4mm, so, when the control uniform temp, the bimetal leaf 6 distortion radians that diameter is big more are big more, the distance of backing down between described moving contact and the fixed contact is increased, guaranteed the useful life of thermostat.

In addition, also include the first terminal 91 that is connected in the electric heating loop, second terminal 92, first reed 71 and guiding push rod 8 as diverter switch, the center curvature face inside 61 of one end of described push rod 8 and described bimetal leaf 6 offsets, the other end of described push rod 8 and described first reed 71 offset, one end of described first reed 71 has first moving contact 711, the first terminal 91 has fixed contact 911 with described first moving contact 711 corresponding positions, the other end of described second terminal 92 and described first reed 71 is fixed by welding or other connected modes, like this, under normal condition, the first terminal 91 and second terminal 92 are just by 71 conductings of first reed; When the back-flexing kicks took place described bimetal leaf 6, described push rod 8 had and upwards contacts described first reed 71 and make the trend that described first moving contact 711 and fixed contact 911 are separated from each other;

Because described second terminal 92 and described first reed 71 are fixing by welding, in order to reduce both contact resistances, described second terminal 92 adopts the thick pure iron material of 1.5mm, described first reed 71 adopts the thick import beryllium-bronze material of 0.15mm, when big electric current passes through, just can reduce caloric value effectively, and obtain better heat radiating effect;

Described the first terminal 91, second terminal 92 are fixedly connected in the described housing 1 by rivet 9.

The basic functional principle of this thermostat is:

Under the normal condition, bimetal leaf 6 contacts with aluminium lid 2, first moving contact 711 contacts with fixed contact 911, when temperature is elevated to rated temperature, the crooked kick of direction takes place in bimetal leaf 6, make push rod 8 back down first moving contact 711, the first terminal 91 separates with second terminal 92, and corresponding electric heating loop circuit disconnects; When temperature descended, bimetal leaf 6 was replied, and push rod 8 falls after rise, and the moving contact 711 of winning is contacted with fixed contact 911 again, and the circuit between the first terminal 91 and second terminal 92 is connected.

So as long as pass to aluminum hull 2 when extraneous heat, the bimetal leaf 6 that is arranged in the aluminum hull 2 will be sensed variations in temperature, and then rebound deformation takes place, and then mobile putter 8 makes the moving contact 711 of winning separate with fixed contact 911, makes electric heating element cut off the power supply.

The described temperature adjustment screw rod 42 main adjustment that realize thermostat control temperature, if want the control temperature is made adjustment, as long as turn temperature adjustment screw rod 42 moves up and down in metal nuts 41, described temperature adjustment screw rod 42 will press temperature regulating piece 5, and then compressing bimetal leaf 6, make the flexibility of center curvature face inside 6 of bimetal leaf 6 change, thereby changed the kick temperature of bimetal leaf 6, so just manual regulating and controlling temperature is worked thermostat under the needed different control temperature of user.

Referring to Fig. 3, Fig. 4, be embodiment two:

How the difference of the thermostat among embodiment two and the embodiment one has been one the 3rd terminal 93 and second reed 72, be in particular, be fixedly connected with second reed 72 between described the 3rd terminal 93 and second terminal 92 with second moving contact 721, second reed 72 and second terminal 92 are cut apart with an insulating trip 74 at fixed position, and, second reed 72 also is connected on the housing 1 by an adjustment screw 75, is used to be adjusted at second moving contact 721 under the normal temperature state and the distance between first moving contact 711; When described push rod 8 backs down described first moving contact 711 under the state that separates with fixed contact 911, described second moving contact 721 has and described first moving contact, 711 contacted trend, touch for fear of second moving contact 721 of second reed 72 under normal condition and first moving contact, 711 misconnections of first reed 71, can also fixedly install bigger metallic support shell fragment 73, the three terminals 93 of intensity below second reed 72 by a screw 9 ' be fixedly connected in the described housing 1.

Under the normal temperature, the fixed contact 911 of the first terminal 91 is insulated sheet 74 and isolates disconnection by first moving contact 711 and connection of first reed 71 between second terminal 92 and the 3rd terminal 93; When temperature raises, kick takes place in bimetal leaf 6, and promotion push rod 8 backs down first reed 71, first moving contact 711 and fixed contact 911 disconnect, the first terminal 91 and second terminal, 92 circuitry cuts, and second moving contact 721 of first moving contact 711 of first reed 71 and second reed 72 is connected, second terminal 92 and the 3rd terminal 93 circuit turn-ons; When temperature reduced, bimetal leaf 6 was replied, and at this moment, first moving contact 711 and fixed contact 911 reclose, and circuit is got back to the normal temperature state.

During temperature adjustment, turn temperature adjustment screw rod 42 increases the pressure of 5 pairs of bimetal leafs 6 of temperature regulating piece, thereby can change the kick temperature of bimetal leaf 6, reaches the purpose of temperature adjustment.

Claims

1, a kind of adjusting temperature controller includes

But the housing of a temperature-sensitive (1) has a through hole (11) on the housing;

One temperature-adjusting device includes the adjusting screw(rod) (42) that is arranged in the described through hole (11); And

One is the link gear of temperature-sensing element with bimetal leaf (6);

It is characterized in that: be set with in the described through hole (11) one can with described adjusting screw(rod) (42) metal nuts (41) that cooperates of spiral mutually, and described temperature-adjusting device also includes one and the elasticity temperature regulating piece (5) that offsets at afterbody of described adjusting screw(rod) (42), described temperature regulating piece (5) one ends are fixed in the described housing (1), the other end is a movable end, and the center curvature face inside (61) of described movable end and described bimetal leaf (6) offsets.

2, adjusting temperature controller according to claim 1 is characterized in that: described metal nuts (41) is one-body molded by mosaic mode and described housing (1) in the process of housing machine-shaping.

3, adjusting temperature controller according to claim 1, it is characterized in that: described link gear also comprises the first terminal (91) that is connected in the electric heating loop, first reed (71) and push rod (8), the center curvature face inside (61) of one end of described push rod (8) and described bimetal leaf (6) offsets, the other end of described push rod (8) and described first reed (71) offset, one end of described first reed (71) has first moving contact (711), described the first terminal (91) has fixed contact (911) with the corresponding position of described first moving contact (711), when the back-flexing kick took place described bimetal leaf (6), described push rod (8) had and upwards contacts described first reed (71) and make the trend that described first moving contact (711) and fixed contact (911) are separated from each other.

4, adjusting temperature controller according to claim 3 is characterized in that: described terminal also includes second terminal (92), and the other end of described second terminal (92) and described first reed (71) is fixing by welding.

5, thermostat according to claim 4 is characterized in that: described second terminal (92) adopts the thick pure iron material of 1.5mm, and described first reed (71) adopts the thick import beryllium-bronze material of 0.15mm.

6, adjusting temperature controller according to claim 4, it is characterized in that: described terminal also includes the 3rd terminal (93), between described the 3rd terminal (93) and described second terminal (92), also be provided with second reed (72) with second moving contact (721), between described second reed (72) and the contacted position of described second terminal (92), also be provided with an insulating trip (74), be fixed with a metallic support shell fragment (73) of being close to described second reed (72) on the described insulating trip (74) again, connect by an adjustment screw (75) between described second reed (72) and the housing (1); When described push rod (8) backs down described first moving contact (711) under the state that separates with fixed contact (911), second moving contact (721) of described second reed (72) has and the contacted trend of described first moving contact (711).

7, according to the described adjusting temperature controller of arbitrary claim in the claim 1～6, it is characterized in that: described bimetal leaf (6) adopts the major diameter bimetal leaf of 25.4mm.

8, according to the described adjusting temperature controller of arbitrary claim in the claim 1～6, it is characterized in that: described housing (1) is fixed with aluminum hull (2) in the bottom, and described bimetal leaf (6) correspondingly is contained in the aluminum hull (2) that offers groove (21).

9, according to the described adjusting temperature controller of arbitrary claim in the claim 1～6, it is characterized in that: described housing (1) also is fixedly connected with capping (3) on top.

10, according to the described adjusting temperature controller of arbitrary claim in the claim 1～6, it is characterized in that: also be arranged with the plastics that can be used for the adjustment indication on the described adjusting screw(rod) (42) and regulate pointer (43).