CN109427506B - Pressure switch and electric pressure cooker - Google Patents
Pressure switch and electric pressure cooker Download PDFInfo
- Publication number
- CN109427506B CN109427506B CN201710739855.XA CN201710739855A CN109427506B CN 109427506 B CN109427506 B CN 109427506B CN 201710739855 A CN201710739855 A CN 201710739855A CN 109427506 B CN109427506 B CN 109427506B
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- Prior art keywords
- contact
- pressure switch
- current
- pressure
- magnetic
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H35/00—Switches operated by change of a physical condition
- H01H35/24—Switches operated by change of fluid pressure, by fluid pressure waves, or by change of fluid flow
- H01H35/26—Details
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47J—KITCHEN EQUIPMENT; COFFEE MILLS; SPICE MILLS; APPARATUS FOR MAKING BEVERAGES
- A47J27/00—Cooking-vessels
- A47J27/08—Pressure-cookers; Lids or locking devices specially adapted therefor
- A47J27/0802—Control mechanisms for pressure-cookers
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
- H01H9/30—Means for extinguishing or preventing arc between current-carrying parts
- H01H9/44—Means for extinguishing or preventing arc between current-carrying parts using blow-out magnet
- H01H9/443—Means for extinguishing or preventing arc between current-carrying parts using blow-out magnet using permanent magnets
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- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Engineering & Computer Science (AREA)
- Food Science & Technology (AREA)
- Arc-Extinguishing Devices That Are Switches (AREA)
Abstract
The invention provides a pressure switch and an electric pressure cooker, wherein the pressure switch comprises a first contact, a second contact and a magnetic assembly; the first contact and the second contact are oppositely arranged along a first direction; the angle between the direction of the magnetic field generated by the magnetic assembly and the first direction is larger than zero, and the magnetic assembly is used for changing the direction of the arc discharge current between the first contact and the second contact. Therefore, when an arc discharge phenomenon is generated between the first contact and the second contact, the direction of arc discharge current is changed, the arc discharge distance is lengthened to achieve the effect of rapid arc extinguishing, the contacts are protected, and the service life of the pressure switch is prolonged.
Description
Technical Field
The invention relates to the technical field of electronics, in particular to a pressure switch and an electric pressure cooker.
Background
Generally, the contact of the switching device and a medium around the contact contain a large amount of dissociated electrons, and when a sufficient applied voltage exists between the disconnected contacts and the circuit current reaches the minimum arc generation current, the electrons are dissociated strongly to form an arc between the contacts, so that the arc discharge phenomenon is generated.
The arc is a high-temperature high-conductivity free gas, which accelerates the oxidation of the contact and shortens the service life of the switching device.
Disclosure of Invention
The present invention is directed to solving, at least to some extent, one of the technical problems in the related art.
Therefore, the invention provides the pressure switch, when an arc discharge phenomenon is generated between the first contact and the second contact of the pressure switch, the direction of arc discharge current can be changed, so that the arc discharge distance is prolonged to achieve the effect of quickly extinguishing the arc, the contact is protected, and the service life of the pressure switch is prolonged.
The invention also provides the electric pressure cooker.
The embodiment of the first aspect of the present invention provides a pressure switch, including: the device comprises a first contact, a second contact and a magnetic component;
the first contact and the second contact are oppositely arranged along a first direction;
the angle between the direction of the magnetic field generated by the magnetic assembly and the first direction is larger than zero, and the magnetic assembly is used for changing the direction of the arc discharge current between the first contact and the second contact.
The pressure switch that this application embodiment provided, including first contact, second contact and magnetic component, first contact and second contact set up along first direction relatively, magnetic component can produce and be greater than zero magnetic field with the angle between first direction, and then produce with first direction vertically ampere force, can produce between first contact and second contact and draw the arc phenomenon when, change the direction that draws the arc current, thereby draw the arc distance to elongate the effect that reaches quick arc extinguishing, the protection to the contact has been realized, pressure switch's life has been prolonged.
According to one embodiment of the invention, the direction of the magnetic field generated by the magnetic assembly is perpendicular to the first direction.
According to one embodiment of the invention, the magnetic assembly comprises: the magnetic pole of the first permanent magnet is opposite to that of the second permanent magnet;
the first permanent magnet and the second permanent magnet are oppositely arranged along a second direction, and an angle between the second direction and the first direction is larger than zero.
According to one embodiment of the invention, the magnetic component is a power-on wire;
the electrified lead, the first contact and the second contact are arranged on the same plane, and the first contact and the second contact are positioned on the same side of the electrified lead.
According to an embodiment of the invention, the pressure switch further comprises: a controller;
and the controller is used for controlling the current value flowing through the electrified lead according to the current value flowing in the pressure switch.
According to an embodiment of the present invention, the controller is specifically configured to increase a value of the current flowing through the energized conductor when it is determined that a value of the current flowing through the pressure switch is large;
when it is determined that the value of the current flowing in the pressure switch is small, the value of the current flowing through the energized conductor is reduced.
According to an embodiment of the invention, the pressure switch further comprises: a power source;
the power supply is used for supplying current to the electrifying conducting wire.
According to an embodiment of the invention, the pressure switch further comprises: a current monitoring component;
the current monitoring assembly monitors the current flowing through the pressure switch.
According to an embodiment of the invention, the pressure switch further comprises: pressing the component;
the pressure component is used for connecting or disconnecting the first contact and the second contact under the action of pressure.
An embodiment of a second aspect of the present application provides an electric pressure cooker, which includes the pressure switch of the first aspect.
In the electric pressure cooker that this application embodiment provided, pressure switch includes first contact, second contact and magnetic component, first contact and second contact set up along the first direction relatively, magnetic component can produce with the angle between the first direction be greater than zero magnetic field, and then produce with first direction vertically ampere force, can produce between first contact and second contact and draw the arc phenomenon when, change the direction that draws the arc current, thereby draw the arc distance to elongate the effect that reaches quick arc extinguishing, the protection to the contact has been realized, pressure switch's life has been prolonged.
Drawings
The foregoing and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
FIG. 1 is a schematic top view of a pressure switch according to an embodiment of the present application;
FIG. 2 is a schematic top view of a pressure switch according to another embodiment of the present application;
FIG. 3 is a schematic diagram of a front view of a pressure switch according to another embodiment of the present application;
fig. 4 is a schematic structural view of an electric pressure cooker according to an embodiment of the present application.
Description of reference numerals:
pressure switch-10; a first contact-11; a second contact-12;
-a magnetic component-13; a first permanent magnet-131; a second permanent magnet-132;
a power-on lead-133; a pressing component-14.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.
Specifically, the invention provides a pressure switch aiming at the problems that the existing switch device has enough applied voltage between disconnected contacts, and the arc discharge phenomenon can be generated when the circuit current reaches the minimum arc generation current, so that the contact is accelerated to be oxidized, and the service life of the switch device is shortened.
The pressure switch provided by the embodiment of the invention comprises a first contact, a second contact and a magnetic component, wherein the first contact and the second contact are oppositely arranged along a first direction, the magnetic component can generate a magnetic field with an angle larger than zero with the first direction so as to generate an ampere force vertical to the first direction, and when an arc discharge phenomenon is generated between the first contact and the second contact, the direction of arc discharge current is changed, so that the arc discharge distance is prolonged to achieve the effect of quickly extinguishing an arc, the protection on the contacts is realized, and the service life of the pressure switch is prolonged.
The pressure switch and the electric pressure cooker according to the embodiment of the invention are described below with reference to the attached drawings.
Fig. 1 is a schematic top view of a pressure switch according to an embodiment of the present application.
As shown in fig. 1, the pressure switch 10 includes: a first contact 11, a second contact 12 and a magnetic component 13.
The first contact 11 and the second contact 12 are arranged oppositely along a first direction; the angle between the direction of the magnetic field generated by the magnetic assembly 13 and the first direction is greater than zero, and the magnetic assembly is used for changing the direction of the arc discharge current between the first contact 11 and the second contact 12. Fig. 1 illustrates that the angle between the direction of the magnetic field generated by the magnetic assembly 13 and the first direction is 90 degrees.
Specifically, the pressure switch 10 may be various types of pressure switches, such as an explosion-proof pressure switch, a mechanical pressure switch, an electronic pressure switch, and the like.
The magnetic assembly 13 may be any assembly capable of generating a magnetic field, such as a permanent magnet, an energized coil, or the like. Fig. 1 illustrates an example in which the magnetic assembly 13 includes a first permanent magnet 131 and a second permanent magnet 132.
Wherein, the magnetic poles of the first permanent magnet 131 and the second permanent magnet 132 are opposite; the first permanent magnet 131 and the second permanent magnet 132 are disposed opposite to each other along a second direction, and an angle between the second direction and the first direction is greater than zero.
In fig. 1, the angle between the second direction and the first direction is shown as 90 degrees. In addition, N indicates north and S indicates south in fig. 1, and the magnetic field generated by the magnetic assembly 13 is in a direction in which N points to S.
Specifically, when the arc discharge phenomenon occurs between the first contact 11 and the second contact 12, the direction of the arc discharge current is the first direction, that is, the horizontal direction in fig. 1, and since the angle between the direction of the magnetic field generated by the magnetic assembly 13 and the first direction is greater than zero, a magnetic field component exists in the direction perpendicular to the first direction, so that an ampere force different from zero can be generated under the action of the magnetic field. The direction of the ampere force is vertical to the direction of the arc discharge current and the direction of the magnetic field, so that the direction of the arc discharge current can be changed, the arc discharge distance is lengthened to achieve the effect of quickly extinguishing the arc, the protection of the contact is realized, and the service life of the pressure switch is prolonged.
In a preferred implementation, the magnetic field generated by the magnetic assembly 13 may be perpendicular to the first direction, that is, as shown in fig. 1, the first permanent magnet 131 and the second permanent magnet 132 may be disposed opposite to each other along a second direction perpendicular to the first direction, so that the generated ampere force can be maximized and the arc extinguishing speed can be increased.
In one possible implementation of the present invention, as shown in fig. 2, the magnetic component 13 may be a power conducting wire 133.
The conducting wire 133, the first contact 11 and the second contact 12 are disposed on the same plane, and the first contact 11 and the second contact 12 are located on the same side of the conducting wire 133. Fig. 2 is a schematic view of an example in which the current-carrying wires are provided on the right side of the first contact 11 and the second contact 12.
Specifically, when the direction of the current I of the current-carrying wire 133 is the direction indicated by the arrow in fig. 2, a magnetic field can be generated outward from the paper surface. When an arc discharge phenomenon is generated between the first contact 11 and the second contact 12, if the direction of the arc discharge current is the direction in which the first contact 11 points to the second contact 12, a vertically downward ampere force can be generated under the action of the magnetic field, so that the direction of the arc discharge current is changed, and the arc discharge distance is lengthened to achieve the effect of quickly extinguishing the arc.
The current-carrying conductor 133 may be provided at any position on the same plane as the first contact 11 and the second contact 12 and on the same side of the current-carrying conductor 133 as needed, so that the first contact 11 and the second contact 12 can be positioned. For example, the contact may be provided at the position shown in fig. 2, or may be provided at a position on the same plane as the first contact 11 and the second contact 12 and on the left side of the first contact 11 and the second contact 12; or may be provided at the same plane as the first and second contacts 11 and 12 and at the lower side of the first and second contacts 11 and 12, and so on.
Further, the pressure switch 10 may further include a controller for controlling a value of the current flowing through the current-carrying wire 133 according to a value of the current flowing through the pressure switch 10.
Specifically, if it is determined that the value of the current flowing through the pressure switch 10 is large, the value of the current flowing through the energizing wire 133 may be increased; if it is determined that the value of the current flowing in the pressure switch 10 is small, the value of the current flowing through the energizing wire 133 can be reduced.
It will be appreciated that, in general, the magnitude of the magnetic field generated by energized conductor 133 is proportional to the magnitude of the current flowing through energized conductor 133. When the current value flowing through the pressure switch 10 is large, the arc discharge current generated between the first contact 11 and the second contact 12 is also correspondingly large, and by increasing the current value flowing through the electrifying conducting wire 133, the magnetic field generated by the electrifying conducting wire 133 can be stronger, so that a larger ampere force is generated, and the arc extinguishing speed is faster. When the value of the current flowing through the pressure switch 10 is small, the arcing current generated between the first contact 11 and the second contact 12 is also correspondingly small, and at this time, the value of the current flowing through the energizing wire 133 can be reduced, so that the energy consumption can be reduced while the effect of rapid arc extinction is ensured.
Further, in the embodiment of the present invention, a power supply may be further included to supply current to the power-on wire 133.
In addition, in the embodiment of the present invention, a current monitoring component may be further included for monitoring the current flowing through the pressure switch 10, so that the controller may control the value of the current flowing through the energizing wire 133 according to the magnitude of the current monitored by the current monitoring component.
The current monitoring component may be any component capable of monitoring current. Such as transformers, current sensors, etc.
In addition, as shown in fig. 3, the pressure switch 10 may further include a pressing assembly 14 for connecting or disconnecting the first contact 11 and the second contact 12 under pressure.
It should be noted that fig. 3 is a schematic front view of the pressure switch 10, the shape and size of the pressure-acting component 14 shown in fig. 3 are only schematic illustrations, and in a specific implementation, the shape and size of the pressure-acting component 14 can be set according to needs, and are not limited herein.
Specifically, the pressure-operated component 14 may be subjected to downward pressure, and if the pressure-operated component 14 is subjected to a small pressure or no pressure acts on the pressure-operated component, the first contact 11 and the second contact 12 on the pressure switch are communicated by the pressure-operated component 14; if the pressure applied to the pressing component 14 is large, the pressing component 14 can move downwards, so that the first contact 11 and the second contact 12 are in an open state, and the first contact 11 and the second contact 12 are connected or disconnected according to the pressure.
The pressure switch that this application embodiment provided, including first contact, second contact and magnetic component, first contact and second contact set up along first direction relatively, magnetic component can produce and be greater than zero magnetic field with the angle between first direction, and then produce with first direction vertically ampere force, can produce between first contact and second contact and draw the arc phenomenon when, change the direction that draws the arc current, thereby draw the arc distance to elongate the effect that reaches quick arc extinguishing, the protection to the contact has been realized, pressure switch's life has been prolonged.
Fig. 4 is a schematic structural view of an electric pressure cooker according to an embodiment of the present application.
As shown in fig. 4, the electric pressure cooker comprises a pressure switch 10.
In particular, the pressure switch 10 may take the form provided by the above-described embodiments of the present invention.
It should be noted that, for the above explanation of the structure and the operation principle of the pressure switch 10, reference may be made to the detailed description of the above embodiments, which are not repeated herein.
It can be understood that when the electric pressure cooker starts to cook, the relay starts to be attracted under the control of the electric control board, so that the pressure switch 10 is in a communicated state, and the electric heating plate is electrified to start to heat the inner pot of the pressure cooker. When cooking enters a pressure starting stage, the pressure cooking inner pot is pressed to expand so as to apply downward acting pressure on the pressure switch 10, the pressure switch 10 becomes an off state, and an arc discharge phenomenon can be generated between two contacts.
Because the magnetic component 13 is added in the pressure switch 10 of the embodiment of the invention, the angle between the direction of the magnetic field generated by the magnetic component 13 and the first direction in which the two contacts are arranged is larger than zero, so that an ampere force vertical to the first direction can be generated, the direction of arc discharge current is changed, the arc discharge distance is prolonged to achieve the effect of quickly extinguishing the arc, the contacts are protected, and the service life of the pressure switch 10 is prolonged.
In the electric pressure cooker that this application embodiment provided, pressure switch includes first contact, second contact and magnetic component, first contact and second contact set up along the first direction relatively, magnetic component can produce with the angle between the first direction be greater than zero magnetic field, and then produce with first direction vertically ampere force, can produce between first contact and second contact and draw the arc phenomenon when, change the direction that draws the arc current, thereby draw the arc distance to elongate the effect that reaches quick arc extinguishing, the protection to the contact has been realized, pressure switch's life has been prolonged.
In the description of the present invention, it is to be understood that the terms "area", "width", "circumferential" and the like indicate orientations or positional relationships based on those shown in the drawings, and are used only for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.
In the present invention, unless otherwise explicitly specified or limited, the terms "disposed," "connected," and the like are to be construed broadly, e.g., as meaning mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in M embodiments or examples of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.
Claims (7)
1. A pressure switch, comprising: the device comprises a first contact, a second contact, a magnetic assembly and a controller;
the first contact and the second contact are oppositely arranged along a first direction;
the angle between the direction of the magnetic field generated by the magnetic assembly and the first direction is larger than zero, and the magnetic assembly is used for changing the direction of arc discharge current between the first contact and the second contact;
the magnetic component is a powered straight wire;
the electrified straight wire, the first contact and the second contact are arranged on the same plane, and the first contact and the second contact are positioned on the same side of the electrified straight wire;
and the controller is used for controlling the current value flowing through the electrified straight wire according to the current value flowing in the pressure switch.
2. The pressure switch of claim 1, wherein the magnetic field generated by the magnetic assembly is oriented perpendicular to the first direction.
3. The pressure switch of claim 1, wherein the controller is specifically configured to increase the value of the current flowing through the energized conductor when it is determined that the value of the current flowing in the pressure switch is large;
when it is determined that the value of the current flowing in the pressure switch is small, the value of the current flowing through the energized conductor is reduced.
4. The pressure switch of claim 1, further comprising: a power source;
the power supply is used for supplying current to the electrifying conducting wire.
5. The pressure switch of claim 1, further comprising a current monitoring assembly;
the current monitoring assembly monitors the current flowing through the pressure switch.
6. The pressure switch of any of claims 1-5, further comprising: pressing the component;
the pressure component is used for connecting or disconnecting the first contact and the second contact under the action of pressure.
7. An electric pressure cooker, characterized in that, includes: a pressure switch according to any one of claims 1 to 6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710739855.XA CN109427506B (en) | 2017-08-25 | 2017-08-25 | Pressure switch and electric pressure cooker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710739855.XA CN109427506B (en) | 2017-08-25 | 2017-08-25 | Pressure switch and electric pressure cooker |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109427506A CN109427506A (en) | 2019-03-05 |
| CN109427506B true CN109427506B (en) | 2020-11-20 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201710739855.XA Active CN109427506B (en) | 2017-08-25 | 2017-08-25 | Pressure switch and electric pressure cooker |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110250935A (en) | 2017-08-09 | 2019-09-20 | 沙克忍者运营有限责任公司 | Cooking system |
| CN212788226U (en) | 2019-02-25 | 2021-03-26 | 沙克忍者运营有限责任公司 | Cooking system |
| US11134808B2 (en) | 2020-03-30 | 2021-10-05 | Sharkninja Operating Llc | Cooking device and components thereof |
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| CN109427506A (en) | 2019-03-05 |
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