CN205943937U - Overheat protection device and electrical apparatus - Google Patents
Overheat protection device and electrical apparatus Download PDFInfo
- Publication number
- CN205943937U CN205943937U CN201620683611.5U CN201620683611U CN205943937U CN 205943937 U CN205943937 U CN 205943937U CN 201620683611 U CN201620683611 U CN 201620683611U CN 205943937 U CN205943937 U CN 205943937U
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- Prior art keywords
- deformation
- protection system
- overtemperature protection
- moving contact
- contact
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Abstract
The utility model provides a pair of the overheat protection device, wherein, the overheat protection device includes thermal deformation spare, deformation receptor, deformation action ware, moving contact and static contact, wherein, the static contact is connected with the zero line or the live wire of major loop, the live wire of moving contact and major loop or the zero line is connected and with quiet male contact connects, thermal deformation spare triggers when receiving heat altered shape deformation action ware, deformation action ware promotes the deformation receptor produces the displacement, the deformation receptor drives the moving contact removes, makes the moving contact with static contact disconnect. Above -mentioned overheat protection device, when the heat -generating body subassembly was overheated, thermal deformation spare can receive heat altered soft, need not to carry out complicated determining the temperature field selection to the position of thermal deformation spare and represented the temperature position, and the thermal deformation spare of deliquescing triggers the action ware that deforms and promotes the removal of deformation receptor, and the drive moving contact breaks off with static contact disconnection contact, messenger's electrical apparatus major loop, realizes the purpose of power -off protection.
Description
Technical field
This utility model is related to electrical equipment and industrial equipment preparation field, more particularly to a kind of overtemperature protection system and electricity
Device.
Background technology
Thermal fuse-link (Thermal Cutoffs, fuse, overtemperature protector) is the not reducible disposable temperature-sensitive protection of one kind
Device, has RH, RF, RS series of low-melting alloy type and the RY series of organic chemistry type, product appearance delicate structure, sealing
The sensitive reliable, rush of current of good, operating temperature affects little, vibration resistance, is mainly used in household electrical appliance and industrial equipment (such as：Electricity
Fan, motor, transformator, electric cooker, electric frying pan, disinfection cabinet, electric-heating thermos etc.) overtemperature protection, to prevent in temperature controller
Or carry out electic protection in the case of temperature control software failure, and anti-dry burning device inefficacy.It is currently that domestic heating electric appliance is made
Last heavy protection for whole machine.But, the selection issue of thermal fuse-link only has experience or mass data at present
Just type selecting can be carried out, there is error, have insecure risk, when determining the installation site of thermal fuse-link, due to heater
Consistency problem, may result in the skew in temperature field, and then the installation site that selects before is unreliable may lose this temperature
The temperature representative of degree field, and then lead to be effectively protected.
Utility model content
Based on this it is necessary to be directed to the unreliability problem of existing thermal fuse-link type selecting and installation site, provide a kind of mistake
Thermel protection device.
A kind of overtemperature protection system that this utility model provides, wherein, described overtemperature protection system includes thermal deformation part, shape
Become sensor, deformation action device, moving contact and static contact, wherein,
Described static contact is connected with the zero line of major loop or live wire；
The live wire of described moving contact and major loop or zero line connect and contact connection with described static contact；
Described deformation action device is triggered, described deformation action device promotes described deformation sense during described thermal deformation part temperature distortion
Receiver produces displacement, and described deformation sensor drives described moving contact to move, and so that described moving contact is disconnected even with described static contact
Connect.
In one of which embodiment, described deformation action device includes elastic component, and described elastic component suppresses in described shape
Become on sensor.
In one of which embodiment, described deformation action device includes cylindrical member and is enclosed within the bullet in described cylindrical member
Spring, described spring suppression is on described deformation sensor.
In one of which embodiment, described cylindrical member is connected with described deformation sensor on-fixed.
In one of which embodiment, described cylindrical member is connected by slideway with described deformation sensor.
In one of which embodiment, described deformation sensor drives described moving contact to move by drive link.
Wherein in an embodiment, described drive link is rotatably connected at described overtemperature protection system place by bearing pin
On electrical equipment, described drive link one end be located at described deformation sensor displacement route on, and described drive link away from described shape
The one end becoming sensor connects described moving contact.
In one of which embodiment, described bearing pin is more than described bearing pin and described deformation with the distance of described moving contact
The distance of sensor.
In one of which embodiment, described drive link is L-type.
It is characterised in that described deformation sensor is fitted on described thermal deformation part in one of which embodiment.
A kind of electrical equipment that this utility model provides, wherein, described electric mounting has at least one overtemperature protection described above
Device.
In one of which embodiment, the thermal deformation part of described overtemperature protection system is installed on the heater of described electrical equipment
The side of assembly or surrounding.
In one of which embodiment, described electrical equipment is pressure cooker, electric cooker, insulating pot, disinfection cabinet.
Above-mentioned overtemperature protection system, when heating unit assembly is overheated, thermal deformation part can be heated deliquescing, need not be directed to hot shape
The temperature of the measurement field that the position of change part carries out complexity selects to represent temperature position, and the thermal deformation part triggering deformation action device of deliquescing pushes away
Dynamic deformation sensor moves, and drives moving contact to disconnect with static contact and contacts, and so that electrical equipment major loop is disconnected, realizes the mesh of power-off protection
's.Heating unit assembly need not be carried out selecting installation site after temperature field recognition during design electrical equipment, reduce the design cycle, raising is ground
Send out speed；
Above-mentioned overtemperature protection system, frame for movement will not reduce impression temperature because of the change of temperature field that heating unit assembly produces
The sensitivity of degree, has the overtemperature protection reliability higher than thermal fuse-link；And frame for movement can be carried out according to the electrical equipment installed
Design adjustment, applied range.
Brief description
In order to be illustrated more clearly that the embodiment of the present application or technical scheme of the prior art, below will be to institute in embodiment
Need use accompanying drawing be briefly described it should be apparent that, drawings in the following description be only this utility model described in
Some embodiments, for those of ordinary skill in the art, other accompanying drawings can also be obtained according to these accompanying drawings.
Fig. 1 is this utility model overtemperature protection system preferred embodiment front view figure；
Fig. 2 is enlarged diagram at Figure 1A；
Fig. 3 is this utility model overtemperature protection system scheme of installation；
Wherein,
100- thermal deformation part；
200- deformation sensor；
300- moving contact；
310- drive link
311- bearing pin；
400- static contact；
500- deformation action device；
510- cylindrical member；
520- spring；
600- heating unit assembly.
Specific embodiment
For making the purpose of this utility model, technical scheme and advantage become more apparent, below in conjunction with drawings and Examples,
This utility model is described in further detail.It should be appreciated that specific embodiment described herein is only in order to solve
Release this utility model, do not limit protection domain of the present utility model.
Refer to shown in Fig. 1 to Fig. 3, overtemperature protection system of the present utility model includes thermal deformation part 100, deformation sensor
200th, deformation action device 500, moving contact 300 and static contact 400.
Thermal deformation part 100 using 91 DEG C of low-melting alloy preparations is loop configuration, the thermal deformation part 100 of this loop configuration
It is installed on the periphery of heating unit assembly 600, to experience the temperature of heating unit assembly 600.Several arc deformation sensors 200 paste
It is combined on thermal deformation part 100, deformation sensor 200 can move generation displacement.Deformation action device 500 be a cylindrical member 510 with
And it is enclosed within the spring 520 of cylindrical member 510, in the embedded deformation sensor 200 of one end activity of cylindrical member 510, the other end is fixed with
One perpendicular wall, this perpendicular wall is fixed on electrical equipment, makes the cylindrical member 510 that spring 520 is compressed between deformation sensor 200 and this perpendicular wall
On.It is connected with moving contact 300 in the bottom driving of deformation sensor 200, in the present embodiment, moving contact 300 is by with bearing pin
311 L-type drive link 310 is driven, and bearing pin 311 is fixed on electrical equipment, and moving contact 300 is arranged on one end of L-type drive link 310, L
The other end of type drive link 310 is located on the displacement route of deformation sensor 200.Moving contact 300 and static contact 400 respectively with
The zero line of major loop or live wire connect, and moving contact 300 contacts connection with static contact 400.
In the case of the normal operation of electrical equipment, heating unit assembly 600 will not produce too high temperature, and thermal deformation part 100 is not
Can be heated, even if the hardness of therefore thermal deformation part 100 be enough to support deformation sensor 200 work so as in deformation action device 500
With under do not produce displacement yet, movable contact is contacted with stationary contact point protection, and major loop is in an ON state.
When other temperature control protective measures of electrical equipment lost efficacy, heating unit assembly 600 adstante febre produces heat, when the temperature producing
When spending high, thermal deformation part 100 is heated and will soften, and the spring 520 of now deformation action device 500 will promote deformation sensor 200
Mobile, make deformation sensor 200 produce displacement.One end that drive link 310 is contacted with deformation sensor 200 is with deformation sensor
200 is mobile, so that drive link 310 is rotated around bearing pin 311, and the one end being connected with moving contact 300 is moved and stationary contact disconnection, realizes master
The cut-out in loop, reaches the purpose of protection electrical equipment.
In the embedded deformation sensor 200 of one end activity of the cylindrical member 510 of deformation action device 500, deformation can be experienced
Device 200 plays certain supporting role, also allows for spring 520 and promotes deformation sensor 200 to produce displacement.
In other embodiments, thermal deformation part 100 by the material preparation of easy deliquescing deformation of being heated, for example, can be terylene tree
Thermal deformation plastics or the low-melting alloys such as fat (Polyethylene terephthalate, PET).The shape of thermal deformation part 100
Can be determined according to the position installed.
As optional embodiment, drive link 310 away from moving contact 300 one end adjacent to deformation sensor 200 but not with
Deformation sensor 200 contacts, to avoid deformation sensor 200 minute movement to affect the connection in loop.
As optional embodiment, the bearing pin 311 of drive link 310 is more than bearing pin 311 and deformation with the distance of moving contact 300
The distance of sensor 200.When deformation sensor 200 produces less displacement under the promotion of deformation action device 500, moving contact
300 can produce larger displacement is disconnected with static contact 400, realizes more accurately overtemperature protection effect.
As optional embodiment, drive link 310 can also be simple cylindrical member 510, this cylindrical member 510 one end rigidity
It is fixed on deformation sensor 200, the other end is connected with moving contact 300, make moving contact 300 contact connection with static contact 400.When
When deformation sensor 200 produces displacement under the promotion of deformation action device 500, moving contact 300 also produces identical displacement, works as position
When moving sufficiently large, moving contact 300 is disconnected with static contact 400, and major loop cuts off.
As optional embodiment, deformation action device 500 is only at least one spring 520, and one end of spring 520 is fixed on
On electrical equipment, the other end suppresses on deformation sensor 200.
As optional embodiment, deformation action device 500 can include other elastic components, for example, can be metal folding bullet
Piece, one end of this shell fragment is fixed on electrical equipment, and the other end suppresses on deformation sensor 200, when thermal deformation part 100 is subject to thermal softening
Or during deformation, shell fragment pushes deformation sensor 200, deformation sensor 200 is made to produce displacement, deformation sensor 200 passes through transmission
Bar 310 drives movable contact to move, and so that major loop is cut off, reaches the purpose of protection electrical equipment.
Thermal fuse-link is a kind of important protection device of overtemperature protection, but thermal fuse-link electrical equipment design selection and should
With during, there be difficulties involved when and risk.When determining the installation site of thermal fuse-link, need to consider heating unit assembly
The temperature field of 600 generations, selects the position having temperature representative to arrange position and the model of thermal fuse-link, needs designer to pass through
Mass data and experience are designed determining.Yet with the consistency problem of heating unit assembly 600 heating, may result in
The skew in temperature field, and then selectively installation site may lose temperature representative before, and then so that thermal fuse-link can not be risen
Effect to overtemperature protection.
Overtemperature protection system of the present utility model, can be directly mounted at around the heating unit assembly 600 of electrical equipment, without examining
Consider the position of the temperature field representative temperature selecting heating unit assembly 600 to produce, when saving design electrical equipment, measure mass data
Process.Even if the temperature field of other heating unit assembly 600 produces skew, overtemperature protection system of the present utility model also still may be used
Produce excessive temperature heating unit assembly 600 is detected, cause thermal deformation part 100 to be subject to thermal softening, the spring of deformation action device 500
520 will promote deformation sensor 200 mobile, make deformation sensor 200 produce displacement.Drive link 310 and deformation sensor 200
One end of contact is mobile with deformation sensor 200, so that drive link 310 is rotated around bearing pin 311, is connected with one end of moving contact 300
Mobile and stationary contact disconnects, and realizes the cut-out of major loop, reaches the purpose of protection electrical equipment.
Embodiment described above only have expressed several embodiments of the present utility model, and its description is more concrete and detailed,
But therefore can not be interpreted as the restriction to this utility model the scope of the claims.It should be pointed out that it is common for this area
For technical staff, without departing from the concept of the premise utility, some deformation can also be made and improve, these all belong to
In protection domain of the present utility model.Therefore, the protection domain of this utility model patent should be defined by claims.
Claims (13)
1. a kind of overtemperature protection system is it is characterised in that described overtemperature protection system includes thermal deformation part (100), deformation impression
Device (200), deformation action device (500), moving contact (300) and static contact (400), wherein,
Described static contact (400) is connected with the zero line of major loop or live wire；
The live wire of described moving contact (300) and major loop or zero line connect and contact connection with described static contact (400)；
Described deformation action device (500) is triggered, described deformation action device (500) pushes away during described thermal deformation part (100) temperature distortion
Dynamic described deformation sensor (200) produces displacement, and described deformation sensor (200) drives described moving contact (300) mobile, makes institute
State moving contact (300) to disconnect with described static contact (400).
2. overtemperature protection system according to claim 1 is it is characterised in that described deformation action device (500) includes elasticity
Part, described elastic component suppresses on described deformation sensor (200).
3. overtemperature protection system according to claim 1 is it is characterised in that described deformation action device (500) includes column
Part (510) and be enclosed within spring (520) in described cylindrical member (510), described spring (520) is suppressed in described deformation sensor
(200) on.
4. overtemperature protection system according to claim 3 is it is characterised in that described cylindrical member (510) and described deformation sense
Receiver (200) on-fixed connects.
5. overtemperature protection system according to claim 3 is it is characterised in that described cylindrical member (510) and described deformation sense
Receiver (200) is connected by slideway.
6. overtemperature protection system according to claim 1 is it is characterised in that described deformation sensor (200) passes through transmission
Bar (310) drives described moving contact (300) mobile.
7. overtemperature protection system according to claim 6 is it is characterised in that described drive link (310) passes through bearing pin (311)
It is rotatably connected on the electrical equipment that described overtemperature protection system is located, one end of described drive link (310) is located at described deformation impression
On the displacement route of device (200), and one end connection away from described deformation sensor (200) of described drive link (310) is described
Moving contact (300).
8. overtemperature protection system according to claim 7 is it is characterised in that described bearing pin (311) and described moving contact
(300) distance is more than the distance of described bearing pin (311) and described deformation sensor (200).
9. overtemperature protection system according to claim 7 is it is characterised in that described drive link (310) is L-type.
10. the overtemperature protection system according to any one of claim 1 to 9 is it is characterised in that described deformation sensor
(200) it is fitted on described thermal deformation part (100).
A kind of 11. electrical equipment are it is characterised in that described electric mounting has at least one as described in any one of claim 1 to 10
Overtemperature protection system.
12. electrical equipment according to claim 11 are it is characterised in that the thermal deformation part (100) of described overtemperature protection system is pacified
It is loaded on the side of heating unit assembly (600) or the surrounding of described electrical equipment.
13. electrical equipment according to claim 11 are it is characterised in that described electrical equipment is pressure cooker, electric cooker, insulating pot, disappears
Malicious cabinet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620683611.5U CN205943937U (en) | 2016-06-29 | 2016-06-29 | Overheat protection device and electrical apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620683611.5U CN205943937U (en) | 2016-06-29 | 2016-06-29 | Overheat protection device and electrical apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205943937U true CN205943937U (en) | 2017-02-08 |
Family
ID=57931276
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620683611.5U Expired - Fee Related CN205943937U (en) | 2016-06-29 | 2016-06-29 | Overheat protection device and electrical apparatus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205943937U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105977098A (en) * | 2016-06-29 | 2016-09-28 | 珠海格力电器股份有限公司 | Overheat protection device and electric appliance |
-
2016
- 2016-06-29 CN CN201620683611.5U patent/CN205943937U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105977098A (en) * | 2016-06-29 | 2016-09-28 | 珠海格力电器股份有限公司 | Overheat protection device and electric appliance |
| CN105977098B (en) * | 2016-06-29 | 2018-06-05 | 珠海格力电器股份有限公司 | Overtemperature protection system and electric appliance |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170208 Termination date: 20210629 |