CN201247732Y - Temperature controller with temperature control and protection function - Google Patents

Temperature controller with temperature control and protection function Download PDF

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Publication number
CN201247732Y
CN201247732Y CNU2008201629909U CN200820162990U CN201247732Y CN 201247732 Y CN201247732 Y CN 201247732Y CN U2008201629909 U CNU2008201629909 U CN U2008201629909U CN 200820162990 U CN200820162990 U CN 200820162990U CN 201247732 Y CN201247732 Y CN 201247732Y
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CN
China
Prior art keywords
bimetal leaf
housing
temperature
contact
thermostat
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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 - Fee Related
Application number
CNU2008201629909U
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Chinese (zh)
Inventor
朱英年
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朱英年
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Priority to CNU2008201629909U priority Critical patent/CN201247732Y/en
Application granted granted Critical
Publication of CN201247732Y publication Critical patent/CN201247732Y/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Abstract

The utility model relates to a temperature controller with temperature control function and protecting function, which comprises a shell, an end cover, a first bimetallic strip, a contact point pair and a driving piece, wherein the end cover is arranged under the shell body and forms a cavity with the shell, the first bimetallic strip is arranged in the cavity, the contact point pair is respectively and electrically connected with two wire connecting terminals which are exposed out of the shell, and the driving piece is used for driving the contact point pair to be switched on or off under the function of the first bimetallic strip. The temperature controller is characterized in that a second bimetallic strip is arranged in the cavity formed by the end cover and the shell and is arranged between the first bimetallic strip and the driving piece. Compared with the prior art, the temperature controller is provided with two bimetallic strips; and when the first bimetallic strip goes wrong and can not operate, the second bimetallic strip can kick when exceeding ultimate temperature to switch off the circuit in time to protect the controller and external devices.

Description

Thermostat with temperature control and defencive function
Technical field
The utility model relates to a kind of thermostat, particularly a kind of thermostat with temperature control and protection dual-use function.
Background technology
At present, in the thermostat product, as realizing temperature control and two kinds of functions of overtemperature protection simultaneously, a kind of is to adopt two independences and the thermostat that is connected on the circuit is realized respectively, one is the temperature control thermostat with normal kick bimetal leaf, can be in normal temperature range inner control thermostat work; Another then for having the protection thermostat of manual reseting device, is surpassing normal serviceability temperature when temperature, and first temperature control thermostat is cut off the electricity supply by this protection thermostat when breaking down, and gets rid of up to fault.In actual use, adopt the production cost of two thermostats more higher relatively, big to the erection space requirement of product, the heater size there is certain installation limitation.Another kind is to adopt the two disc-type thermostats of closed pair of porcelain bar, this kind thermostat stacks up the thermostat of above-mentioned two parallel connections, and adopt two porcelain bars to control two thermostats respectively, because two magnetic bars need to contact with different bimetal leafs respectively, one of them bimetal leaf has centre bore, make the precision of product can't do height, and then cause life of product to reduce.
On the other hand, in order to improve the temperature-sensitive detection sensitivity, the bald formula end cap of the normal employing of the temperature control thermostat of existing single bimetal leaf, bimetal leaf is in direct contact with on the heater, temperature-sensitive is sensitiveer, but because bimetal leaf is to be directly exposed in the air, causes bimetal leaf to damage easily, in case the temperature-sensitive bimetal leaf damages, and will cause product bug.Therefore,, need a kind of thermostat rational in infrastructure of design, make in temperature-sensitive control, to have fail safe function at the prior art present situation.
The utility model content
Technical problem to be solved in the utility model is to provide a kind of temperature-sensitive sensitivity at above-mentioned prior art present situation, and can effectively protect the thermostat with temperature control and protection dual-use function of thermostat when the temperature control bimetal leaf takes place to lose efficacy.
The utility model solves the problems of the technologies described above the technical scheme that is adopted: this has the thermostat of temperature control and defencive function, includes
Housing;
End cap is arranged on described housing below, and forms a cavity with this housing;
First bimetal leaf is arranged in the described cavity;
The contact is right, and two outer binding posts are electrically connected with being exposed to described housing respectively; And
Actuator under the effect of described first bimetal leaf, makes described contact to closed or disconnection;
It is characterized in that: in the cavity that described end cap and housing form second bimetal leaf is installed also, this second bimetal leaf is arranged between described first bimetal leaf and the described actuator.
Described binding post can be provided with according to concrete circuit needs, simply, can be single-pole single-throw(SPST formula switching configuration, described binding post includes first binding post, second binding post that is fixed on the described housing, described contact is to including moving contact, fixed contact, described actuator is a push rod, wherein, described moving contact is connected an end of a reed, the other end of this reed is fixedlyed connected with described first binding post, and described fixed contact is fixed on described second binding post;
Under described first bimetal leaf or the second bimetal leaf initial reset state, described moving contact contacts with fixed contact; Under described first bimetal leaf or the reverse kick state of second bimetal leaf, described moving contact and fixed contact are under top effect on the described push rod and be separated from each other.
In order to protect the components and parts that are contained in the housing, and play certain dustproof effect, described housing top also is provided with loam cake, and described contact is to being contained in the chamber that is formed by described loam cake and housing.
For the temperature-sensitive sensitivity; described end cap has uncovered; when the temperature control bimetal leaf breaks down; in order to play protection timely to external equipment; and before fault is got rid of, preventing that equipment from working under nonserviceabling, described first bimetal leaf is can automatically reset two-sided Kick type temperature video disc, and; first bimetal leaf and end cap are uncovered to be contacted with the direct of air realizing relatively, induction working temperature that can rapid sensitive.The single face Kick type temperature video disc that described second bimetal leaf is hand-reset.When first bimetal leaf that plays the temperature control effect breaks down can't work the time, along with temperature raises, this second bimetallic sector-meeting kick and open circuit, but can not automatically reply, prompting user product breaks down, and directly has to fault to get rid of the back hand-reset.
Compared with prior art; advantage of the present utility model is: thermostat of the present utility model is equipped with first bimetal leaf on end cap; this first bimetal leaf is the temperature control bimetal leaf; after the kick action, has the ability of automatically replying; except that first bimetal leaf, be provided with second bimetal leaf again; the protectiveness bimetal leaf of second bimetal leaf for automatically replying; when first bimetal leaf breaks down can not work the time; kick can take place in this second bimetal leaf when overstepping the extreme limit temperature; in time cut off circuit, play the effect of protection thermostat and external equipment.
Description of drawings
Fig. 1 is the perspective view of the utility model embodiment;
Fig. 2 is the cutaway view (initial reset state) of the utility model embodiment;
Fig. 3 is the user mode cutaway view (the temperature control state of the first bimetal leaf kick) of the utility model embodiment;
Fig. 4 is the user mode cutaway view (guard mode of the second bimetal leaf kick) of the utility model embodiment.
Embodiment
Embodiment describes in further detail the utility model below in conjunction with accompanying drawing.
Embodiment, referring to Fig. 1~Fig. 4:
The utility model relates to the C-007S type thermostat that model is a KSD301 series, and this thermostat can be applicable on temperature controls such as boiler, water heater, microwave oven, disinfection cabinet, drying cabinet, coffee pot, electromagnetic oven, water dispenser, insulating pot, baking box, refrigerator, air-conditioning, Aero-Space and protection equipment or the instrument.
Present embodiment is the thermostat with temperature control and defencive function, this thermostat includes housing 1, housing 1 top is provided with loam cake 2, housing 1 below is provided with a temperature-sensitive stainless steel end cap 3, end cap 3 has uncovered 31, for temperature-sensitive sensitiveer, generally the thermostat that requires the temperature-sensitive sensitivity is all adopted the opened type end cap, can directly allow bimetal leaf contact with heater, and, end cap 3 and housing 1 formation one are equipped with the cavity 7 of first bimetal leaf 4, this first bimetal leaf 4 is can automatically reset two-sided Kick type temperature video disc, plays the control temperature action, is the two-sided Kick type bimetal leaf with auto-reset function, and this first bimetal leaf 4 and end cap 3 is uncovered 31 relative, temperature-sensitive that can rapid sensitive;
Be connected with first binding post 11, second binding post 12 by rivet outside the housing 1, in the chamber that housing 1 and loam cake 2 formed, be provided with respectively the moving contact 13, the fixed contact 14 that are electrically connected with first binding post 11, second binding post 12, wherein, moving contact 13 is connected an end of reed 15, the other end of reed 15 is fixedlyed connected with first binding post 11, and fixed contact 14 is fixed on second binding post 12;
One push rod 6 is arranged in the housing 1 as actuator, and under the effect of first bimetal leaf 4, can make moving contact 13 and fixed contact 14 closed or disconnections;
In the cavity 7 of end cap 3 and housing 1 formation, second bimetal leaf 5 is installed also; second bimetal leaf 5 is the single face Kick type temperature video disc of hand-reset; mainly shield; be cannot automatically reset single face Kick type protection type bimetal leaf; and second bimetal leaf 5 is between first bimetal leaf 4 and push rod 6, and the outside center curvature face with first bimetal leaf 4 of the center curvature face of second bimetal leaf 5 is inner relative.
Under first bimetal leaf 4 or second bimetal leaf, 5 initial reset states, moving contact 13 contacts with fixed contact 14; Under first bimetal leaf 4 or second bimetal leaf, 5 reverse kick states, moving contact 13 and fixed contact 14 are under top effect on the push rod 6 and be separated from each other.
The operation principle of present embodiment is as follows:
The kick temperature of supposing first bimetal leaf 4 is 100 degrees centigrade, and the kick temperature of second bimetal leaf 5 is 150 degrees centigrade, under the normal temperature state, and referring to Fig. 2, moving contact 13 and fixed contact 14 closures, circuit turn-on;
Sense ambient temperature when stainless steel end cap 3 and be elevated to 100 degree upward in limited time, kicks take place in first bimetal leaf 4, and drive second bimetal leaf 5 and upwards drive the reed 15 that push rod 6 backs down moving contact 13, and moving contact 13 separates with fixed contact 14, circuit disconnects, referring to Fig. 3.At this moment, second bimetal leaf 5 moves on just with the kick of first bimetal leaf 4, and kick does not take place itself;
When the temperature reduction, when reaching the kick temperature of first bimetal leaf 4, kick takes place and resets to initial condition in first bimetal leaf 4 once more, moving contact 13 and fixed contact 14 closures, circuit turn-on.
When first bimetal leaf 4 breaks down, promptly be elevated on 100 degrees centigrade in ambient temperature and prescribe a time limit, first bimetal leaf 4 is not because kick takes place in fault, and temperature continues to rise, when being elevated to 150 degrees centigrade, kick takes place in second bimetal leaf 5, referring to Fig. 4, at this moment, under the effect of second bimetal leaf 5, the reed 15 that push rod 6 moves upward and backs down moving contact 13, moving contact 13 separates with fixed contact 14, and circuit disconnects; When temperature reduced, because second bimetal leaf 5 can not automatically reply, moving contact 13 and fixed contact 14 still can not be closed, thermostat is not worked, and can point out consumer products to break down, and gets rid of up to fault, hand-reset can make moving contact 13 and fixed contact 14 closed again.So just can better protect external equipment, avoid the generation of accident.

Claims (4)

1, a kind of thermostat with temperature control and defencive function includes
Housing (1);
End cap (3) is arranged on described housing (1) below, and forms a cavity (7) with this housing (1);
First bimetal leaf (4) is arranged in the described cavity (7);
The contact is right, and two outer binding posts are electrically connected with being exposed to described housing (1) respectively; And
Actuator under the effect of described first bimetal leaf (4), makes described contact to closed or disconnection;
It is characterized in that: in the cavity (7) that described end cap (3) and housing (1) form second bimetal leaf (5) is installed also, this second bimetal leaf (5) is arranged between described first bimetal leaf (4) and the described actuator.
2, thermostat with temperature control and defencive function according to claim 1, it is characterized in that: described binding post includes first binding post (11) that is fixed on the described housing (1), second binding post (12), described contact is to including moving contact (13), fixed contact (14), described actuator is a push rod (6), wherein, described moving contact (13) is connected an end of a reed (15), the other end of this reed (15) is fixedlyed connected with described first binding post (11), and described fixed contact (14) is fixed on described second binding post (12);
Under described first bimetal leaf (4) or second bimetal leaf (5) initial reset state, described moving contact (13) contacts with fixed contact (14); Under described first bimetal leaf (4) or the reverse kick state of second bimetal leaf (5), described moving contact (13) and fixed contact (14) are gone up under the effect of top at described push rod (6) and are separated from each other.
3, the thermostat with temperature control and defencive function according to claim 1 is characterized in that: described housing (1) top also is provided with loam cake (2), and described contact is to being contained in the chamber that is formed by described loam cake (2) and housing (1).
4, according to claim 1,2 or 3 described thermostats with temperature control and defencive function; it is characterized in that: described end cap (3) has uncovered (31); described first bimetal leaf (4) is can automatically reset two-sided Kick type temperature video disc and relative with described end cap uncovered (31), and described second bimetal leaf (5) is the single face Kick type temperature video disc of hand-reset.
CNU2008201629909U 2008-08-20 2008-08-20 Temperature controller with temperature control and protection function Expired - Fee Related CN201247732Y (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CNU2008201629909U CN201247732Y (en) 2008-08-20 2008-08-20 Temperature controller with temperature control and protection function

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CNU2008201629909U CN201247732Y (en) 2008-08-20 2008-08-20 Temperature controller with temperature control and protection function

Publications (1)

Publication Number Publication Date
CN201247732Y true CN201247732Y (en) 2009-05-27

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Application Number Title Priority Date Filing Date
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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103377851A (en) * 2012-04-25 2013-10-30 旭程电子(深圳)有限公司 Constant temperature protector
CN104919558A (en) * 2013-01-10 2015-09-16 卡森尼可关精株式会社 Heat sensor
CN106562686A (en) * 2016-11-07 2017-04-19 九阳股份有限公司 Mechanical electric baking appliance and heating control method of same

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103377851A (en) * 2012-04-25 2013-10-30 旭程电子(深圳)有限公司 Constant temperature protector
CN103377851B (en) * 2012-04-25 2015-09-30 旭程电子(深圳)有限公司 Constant temperature protector
CN104919558A (en) * 2013-01-10 2015-09-16 卡森尼可关精株式会社 Heat sensor
US9666394B2 (en) 2013-01-10 2017-05-30 Calsonic Kansei Corporation Heat sensor
CN106562686A (en) * 2016-11-07 2017-04-19 九阳股份有限公司 Mechanical electric baking appliance and heating control method of same

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C14 Grant of patent or utility model
GR01 Patent grant
C17 Cessation of patent right
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20090527

Termination date: 20120820