CN204541751U - A kind of household electrical appliance and non-automatic-reset overpressure protection apparatus thereof - Google Patents
A kind of household electrical appliance and non-automatic-reset overpressure protection apparatus thereof Download PDFInfo
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- CN204541751U CN204541751U CN201520244793.1U CN201520244793U CN204541751U CN 204541751 U CN204541751 U CN 204541751U CN 201520244793 U CN201520244793 U CN 201520244793U CN 204541751 U CN204541751 U CN 204541751U
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Abstract
The utility model discloses a kind of non-automatic-reset overpressure protection apparatus of household electrical appliance, it comprises the first pressure switch and second pressure switch of arranged in series, and the jumping of the first pressure switch value of breaking is less than the disconnected value of jumping of the second pressure switch; Also be provided with the heating wire in parallel with the second pressure switch, and connect with the second pressure switch and the fuse of connecting with heating wire.When household electrical appliance normally work, the first pressure switch and the second pressure switch all closed, whole device normally works, and when pressure appliance container inner pressure reaches the disconnected value of the jumping of the first pressure switch, the first pressure switch disconnects, formation open circuit; When the first pressure switch lost efficacy; pressure appliance container inner pressure constantly increases; when reaching the disconnected value of the jumping of the second pressure switch; second pressure switch is jumped disconnected, and the first pressure switch of inefficacy and heating wire and fuse series connection, until fuse is blown; form open circuit; realize the protection to household electrical appliance, prevent explosion issues, reduce potential safety hazard.
Description
Technical field
The utility model relates to household electrical appliance technical field, in particular, relates to a kind of household electrical appliance and non-automatic-reset overpressure protection apparatus thereof.
Background technology
Electric pressure cooking saucepan is the upgraded product of conventional high-tension pot and electric cooker, it combines the advantage of pressure cooker and electric cooker, therefore becomes when the indispensable cooking appliance of forward galley.
In order to ensure that electric pressure cooking saucepan can not use in a failure situation, thus guaranteeing the use safety of electric pressure cooking saucepan, needing to control the pressure of interiors of products.What wherein pressure controlled electric pressure cooker generally adopted is elastic construction; produce displacement by elastomer compressive deformation and carry out driving pressure switch cutoff power supply; steady operation pressure; but pressure switch can Self-resetting; when pressure switch lost efficacy or control circuit occurs abnormal, then protected by pressure limiting device pressure release.Current most existing pressure relief device is that adopt can the relief valve of Self-resetting, when the pressure in electric pressure cooking saucepan is reduced to below vent pressure, pressure relief device will automatically reset, as long as make the pressure in pressure cooker continue rise or wait pot cool just can restart, electric pressure cooking saucepan can carry out culinary art work again.Some electric pressure cooking saucepan is provided with the duct type non-automatic-reset pressure relief device of mechanical damage formula on pot cover in addition, but this duct type pressure relief device is easy to blocking and lost efficacy, unreliable.When above three safeguard measures all lost efficacy; last safeguard protection done by the last sealing ring pressure relief device that just relies on, but sealing ring pressure relief device also can only discharge most of pressure, and the boosting that can again reset; can not thoroughly discharge all pressure, certain potential safety hazard is still existed to user.
To sum up, there is the potential safety hazard of quick-fried pot in current electric pressure cooking saucepan.
Therefore, how providing a kind of device that can prevent the electric pressure cooking saucepan of fault from cannot heat, to improve the use safety of electric pressure cooking saucepan, is the current technical issues that need to address of those skilled in the art.
Utility model content
In view of this, the utility model provides a kind of non-automatic-reset overpressure protection apparatus, and to improve the use safety of household electrical appliance, the utility model additionally provides a kind of household electrical appliance with this non-automatic-reset overpressure protection apparatus.
For achieving the above object, the utility model provides following technical scheme:
A non-automatic-reset overpressure protection apparatus for household electrical appliance, it comprises:
First pressure switch of arranged in series and the second pressure switch, the jumping of described first pressure switch value of breaking is less than the disconnected value of jumping of described second pressure switch;
The heating wire in parallel with described second pressure switch; Connect with described second pressure switch and the fuse of connecting with described heating wire.
Preferably, in above-mentioned non-automatic-reset overpressure protection apparatus, described first pressure switch and described second pressure switch are two two switches compressed switch.
Preferably, in above-mentioned non-automatic-reset overpressure protection apparatus, described heating wire is nichrome heat silk.
A kind of household electrical appliance, comprise main circuit, it also comprises the non-automatic-reset overpressure protection apparatus as described in above-mentioned any one be connected on described main circuit.
Preferably, in above-mentioned household electrical appliance, described non-automatic-reset overpressure protection apparatus is connected between the input of described main circuit and the heat-generating disc of described main circuit.
Preferably, in above-mentioned household electrical appliance, these household electrical appliance are electric pressure cooking saucepan.
Known via above-mentioned technical scheme, the utility model discloses a kind of non-automatic-reset overpressure protection apparatus of household electrical appliance, it comprises the first pressure switch and second pressure switch of arranged in series, and the jumping of the first pressure switch is broken, value is less than the disconnected value of jumping of the second pressure switch; Be provided with the heating wire in parallel with the second pressure switch in addition, and connect with the second pressure switch and the fuse of connecting with heating wire.This non-automatic-reset overpressure protection apparatus, when household electrical appliance normally work, the first pressure switch and the second pressure switch all closed, whole device normally works, and when pressure appliance container inner pressure reaches the disconnected value of the jumping of the first pressure switch, the first pressure switch disconnects, formation open circuit; And when the first pressure switch lost efficacy; pressure appliance container inner pressure constantly increases; until the jumping reaching the second pressure switch is broken during value, the second pressure switch is jumped disconnected, now; lost efficacy the first pressure switch and heating wire and fuse series connection; until fuse is blown, form open circuit, thus realize the protection to household electrical appliance; prevent explosion issues, reduce potential safety hazard.
Accompanying drawing explanation
In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only embodiment of the present utility model, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to the accompanying drawing provided.
The structural representation of the non-automatic-reset overpressure protection apparatus that Fig. 1 provides for the utility model embodiment;
The circuit diagram of the household electrical appliance normal operating conditions that Fig. 2 provides for the utility model embodiment;
Circuit diagram during the household electrical appliance exception that Fig. 3 provides for the utility model embodiment.
Detailed description of the invention
Core of the present utility model is to provide a kind of non-automatic-reset overpressure protection apparatus, and to improve the use safety of household electrical appliance, another core of the utility model is to provide a kind of household electrical appliance with this non-automatic-reset overpressure protection apparatus.
Below in conjunction with the accompanying drawing in the utility model embodiment, be clearly and completely described the technical scheme in the utility model embodiment, obviously, described embodiment is only the utility model part embodiment, instead of whole embodiments.Based on the embodiment in the utility model, those of ordinary skill in the art are not making the every other embodiment obtained under creative work prerequisite, all belong to the scope of the utility model protection.
As shown in Figure 1-Figure 3, the utility model discloses a kind of non-automatic-reset overpressure protection apparatus of household electrical appliance, it comprises the first pressure switch 11 and the second pressure switch 12 of arranged in series, and the jumping of the first pressure switch 11 is broken, value is less than the disconnected value of jumping of the second pressure switch 12; Be provided with the heating wire 2 in parallel with the second pressure switch 12 in addition, and connect with the second pressure switch 12 and the fuse 3 of connecting with heating wire 2.This non-automatic-reset overpressure protection apparatus, when household electrical appliance normally work, the first pressure switch 11 and the second pressure switch 12 all closed, whole device normally works, and when pressure appliance container inner pressure value disconnected to the jumping of the first pressure switch 11, the first pressure switch 11 disconnects, and forms open circuit; And when the first pressure switch 11 lost efficacy; pressure appliance container inner pressure constantly increases; until the jumping reaching the second pressure switch 12 is broken during value, the second pressure switch 12 is jumped disconnected, now; the first pressure switch 11 lost efficacy and heating wire 2 and fuse 3 are connected; until fuse 3 is blown, form open circuit, thus realize the protection to household electrical appliance; prevent explosion issues, reduce potential safety hazard.
In specific embodiment, above-mentioned disclosed first pressure switch 11 and the second pressure switch 12 be two two switches compressed switch in 1, namely use the pressure switch that 1 replacement two that pair to compress switch is independent.Adopt two compressing switch 1 can reduce the volume that pressure switch takies, and be convenient to install.
Heating wire 2 disclosed in the application is nichrome heat silk, and nichrome heat silk is not yielding under having applied at elevated temperature, its structure not malleable, and plasticity is better, easy reparation, its radiance is high, nonmagnetic, corrosion resistance is strong, long service life etc., thus the service life can improving household electrical appliance.Material for heating wire 2 also can adopt ferrum-chromium-aluminum.
In addition; the application also provides a kind of household electrical appliance; it comprises main circuit; it also comprises series connection non-automatic-reset overpressure protection apparatus on the main circuit; and this non-automatic-reset overpressure protection apparatus is the overpressure protection apparatus of non-automatic-reset disclosed in above-described embodiment; therefore, it is effective that these household electrical appliance also have above-mentioned institute, and this is no longer going to repeat them.
In further embodiment; non-automatic-reset overpressure protection apparatus is connected between the input of main circuit and the heat-generating disc 4 of main circuit, for controlling the work of heat-generating disc 4, preventing the temperature of heat-generating disc 4 too high and burning; protection heat-generating disc 4, thus improve the service life of heat-generating disc 4.
In preferred embodiment, household electrical appliance are defined as electric pressure cooking saucepan, the application is not limited in electric pressure cooking saucepan, needs the household electrical appliance carrying out overvoltage protection also in protection domain for other.
In this description, each embodiment adopts the mode of going forward one by one to describe, and what each embodiment stressed is the difference with other embodiments, between each embodiment identical similar portion mutually see.
To the above-mentioned explanation of the disclosed embodiments, professional and technical personnel in the field are realized or uses the utility model.To be apparent for those skilled in the art to the multiple amendment of these embodiments, General Principle as defined herein when not departing from spirit or scope of the present utility model, can realize in other embodiments.Therefore, the utility model can not be restricted to these embodiments shown in this article, but will meet the widest scope consistent with principle disclosed herein and features of novelty.
Claims (6)
1. a non-automatic-reset overpressure protection apparatus for household electrical appliance, is characterized in that, comprising:
First pressure switch (11) of arranged in series and the second pressure switch (12), the jumping of described first pressure switch (11) value of breaking is less than the disconnected value of jumping of described second pressure switch (12);
The heating wire (2) in parallel with described second pressure switch (12);
Connect with described second pressure switch (12) and the fuse (3) of connecting with described heating wire (2).
2. non-automatic-reset overpressure protection apparatus according to claim 1, is characterized in that, described first pressure switch (11) and described second pressure switch (12) are two two switches compressed switch.
3. non-automatic-reset overpressure protection apparatus according to claim 1, is characterized in that, described heating wire (2) is nichrome heat silk.
4. household electrical appliance, comprise main circuit, it is characterized in that, also comprise the non-automatic-reset overpressure protection apparatus as described in any one of claim 1-3 be connected on described main circuit.
5. household electrical appliance according to claim 4, is characterized in that, described non-automatic-reset overpressure protection apparatus is connected between the input of described main circuit and the heat-generating disc (4) of described main circuit.
6. household electrical appliance according to claim 4, is characterized in that, these household electrical appliance are electric pressure cooking saucepan.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520244793.1U CN204541751U (en) | 2015-04-21 | 2015-04-21 | A kind of household electrical appliance and non-automatic-reset overpressure protection apparatus thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520244793.1U CN204541751U (en) | 2015-04-21 | 2015-04-21 | A kind of household electrical appliance and non-automatic-reset overpressure protection apparatus thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204541751U true CN204541751U (en) | 2015-08-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520244793.1U Expired - Fee Related CN204541751U (en) | 2015-04-21 | 2015-04-21 | A kind of household electrical appliance and non-automatic-reset overpressure protection apparatus thereof |
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| Country | Link |
|---|---|
| CN (1) | CN204541751U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108497915A (en) * | 2017-02-28 | 2018-09-07 | 佛山市顺德区美的电热电器制造有限公司 | The trouble-shooter and method of pressure-detecting device in pressure cooking appliance |
| CN110477744A (en) * | 2019-08-27 | 2019-11-22 | 九阳股份有限公司 | Failure protection method, electric heating class pressure means and the storage medium of pressure switch |
-
2015
- 2015-04-21 CN CN201520244793.1U patent/CN204541751U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108497915A (en) * | 2017-02-28 | 2018-09-07 | 佛山市顺德区美的电热电器制造有限公司 | The trouble-shooter and method of pressure-detecting device in pressure cooking appliance |
| CN108497915B (en) * | 2017-02-28 | 2020-09-22 | 佛山市顺德区美的电热电器制造有限公司 | Fault diagnosis device and method for pressure detection device in pressure cooking appliance |
| CN110477744A (en) * | 2019-08-27 | 2019-11-22 | 九阳股份有限公司 | Failure protection method, electric heating class pressure means and the storage medium of pressure switch |
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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 |
Granted publication date: 20150812 Termination date: 20210421 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |