CN1307439A - Automatic power-adjusting electric heating device - Google Patents
Automatic power-adjusting electric heating device Download PDFInfo
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- CN1307439A CN1307439A CN 00110860 CN00110860A CN1307439A CN 1307439 A CN1307439 A CN 1307439A CN 00110860 CN00110860 CN 00110860 CN 00110860 A CN00110860 A CN 00110860A CN 1307439 A CN1307439 A CN 1307439A
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- electric heater
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Abstract
The invention discloses an electric heating device with adjustable power for household appliances. The power regulator comprises an electric heating wire 3 using commercial power as a power supply and is characterized in that a control switch (1) and a crystal diode (2) are connected in parallel to form a power regulator which is connected with the electric heating wire (3) in series. The control switch (1) can be a temperature control switch with a contact, an air pressure control switch with a contact, a group of normally closed contacts of a relay (J) driven by a transistor (T1), or a unidirectional direct current switch circuit consisting of a switching transistor (T2). The intelligent household appliance has the advantages of automatically adjusting the heating power, obtaining a warm fire heating program and improving the intelligent degree of the household appliance.
Description
The invention discloses a kind of electric heater unit that can carry out the automated power adjustment that is used for household electrical appliance.Belong to daily small household appliances design field.
Be extensive use of electrical heating elements in the daily small domestic appliance, as electric cooker, electric heater, roaster, soy bean milk making machine or the like.Electric heater unit used in the above-mentioned various electric equipment all can not carry out the automated power adjustment.Especially carry out temperature when heating fire when needs, as cook congee, boil medicine, smoldering, boil soya-bean milk etc., the batch (-type) heating is all adopted in its heating, and heating-up temperature is high a burst of, low a burst of, not only waste electric power, and effect is not good yet, presses for improvement.
Task of the present invention provides a kind of electric heater unit that can carry out the automated power adjustment automatically between total power and 1/4th power.
Technical characterictic of the present invention is to adopt a control switch and crystal diode to compose in parallel to adjust in the current supply circuit that element is connected in series heating wire (3) to constitute.Utilize the closed opening of control switch to change the size of ac power circuit electric current, reach the purpose that power is adjusted.Another feature of the present invention also has been to design the structure of various control switch and has used as control switch to adapt in the different household electrical appliance.
Below details are as follows to structure of the present invention by Figure of description:
The electric heater unit that a kind of automated power is adjusted comprises with the civil power being the heating wire (3) of power supply, it is characterized in that composing in parallel power regulator and heating wire (3) coupled in series is constituted by control switch (1) and crystal diode 2.
The crystal diode (2) of forming power regulator among the present invention can adopt the forward operating current greater than heating wire (3) 1/2nd operating currents, the working inverse voltage silicon rectifier cell greater than three times of heating wire (3) operating voltages.
The control switch (1) of forming power regulator among the present invention can be the temp control switch that the contact is arranged, the baroswitch that the contact is arranged, can be by one group of normally closed contact of the relay J of transistor (T1) driving, can also adopt the unidirectional dc switch circuit of forming by switch transistor (T2).
Operation principle of the present invention is: when control switch (1) was closed, crystal diode (2) was by short circuit, and the electric main power supply directly connects the two ends of heating wire (3), and heating wire (3) is in the full power operation state; When control switch (1) is opened, crystal diode (2) is connected in series in the power supply circuits of heating wire (3), alternating current is by crystal diode (2) halfwave rectifier, the virtual voltage at the two ends of heating wire (3) is 45% of a line voltage, and heating wire (3) is in work under nearly 1/4th power ratings.
Control switch among the present invention (1) is because the version difference that adopts can be the ACTIVE CONTROL form; Promoting as direct temperature or pressure, also can be Passive Control, as the relay tip that is driven by electronic switch; The unidirectional electronic switching circuit that can also be contactless electric drive constitutes.Can adopt various ways according to concrete operating position.
The invention has the advantages that the requirement that can adapt to heating schedule adjusts the power of heating wire automatically, obtain the good result of temperature fire heating, important effect is arranged for the intelligent degree that improves small household appliances.Be widely used in the multiple daily small household appliances with electric heater such as electric rice cooker, roaster, electric heater and household automatic soya-bean-milk making machine.
Figure of description 1 is the block diagram of invention: among the figure: 1, control switch, 2 crystal diodes, 3 heating wire.
Figure of description 2 is circuit diagrams of the present invention.D is a crystal diode among the figure, and K is a control switch, and R is a heating wire.
Figure of description 3 is schematic diagrames of a kind of version of control switch 1 of the present invention.Among the figure: 4 fixed contacts.5 moving contacts, 6 eccentric wheels, 7 bimetal leafs, 8 switch baseplates.
Figure of description 4 is schematic diagrames of the another kind of version of control switch 1 of the present invention.9 shells, 10 moving contacts, 11 fixed contacts, 12 terminal blocks, 13 pressure-bearing plates, 14 push rods, 15 springs, 16 supporting brackets, 17 terminal blocks, 18 fixed contacts among the figure.
Figure of description 5 is structural circuit figure of the control switch 1 that is made of electric elements among the present invention.Among the figure: T1 is that transistor, J are relay.
Figure of description 6 is structural circuit figure of the control switch 1 that is made of electronic device among the present invention.Among the figure: T2 is a transistor.
Following according to Figure of description, several embodiments of the present invention are done concrete introduction.
One of embodiment is referring to accompanying drawing 3, present embodiment mainly is suitable for employed electric calorifie installations such as sub-electric food warmer, roaster, it is characterized in that control switch 1 is constituted by being installed in the fixed contact 4 on the switch baseplate 8, the moving contact 5 that is connected with bimetal leaf 7 and eccentric wheel 6.
The operation principle of present embodiment is to utilize bimetal leaf to be heated deformation takes place to make sound contact separation closure, finishes the power of control switch and adjusts task.This control switch can be installed in the position nearer during use apart from heating wire.Adjust the pressure of eccentric wheel, can adjust the temperature of sound contact separation bimetal leaf.
Embodiment two referring to accompanying drawing 4, this embodiment produces when being mainly used in heating such as electric pressure cooker in the small household appliances that pressure changes.It is characterized in that control switch 1 is by fixed contact that has terminal block 12,17 11,18 and fixed contact 11,18 on the supporting bracket 16 that is installed in the shell 9, moving contact that has push rod 14 10 of fitting and the pressure-bearing plate that links to each other with push rod 14 13 are formed, on push rod 14, be with a return spring 15, one end and pressure-bearing plate 13 pressings, the other end and supporting bracket 16 press together.
The operation principle of present embodiment is to utilize pressure-bearing plate to be subjected to the effect of air pressure, promotes push rod 14 the sound contact separation is finished control procedure.During use the pressure-bearing plate one side is communicated with air chamber, can utilize the adjustment of air chamber pressure control heating power.Select different springs for use, can adapt to different couplings with controlled pressure.
Embodiment three referring to accompanying drawing 5, present embodiment is applicable to that mainly the electric heater unit of small household appliances such as the electric cooker, intelligent domestic automatic soya-bean-milk making machine of computer control uses.Owing to adopted electronic intelligence control, control signal directly can have been finished by an electronic switch driver.It is characterized in that control switch 1 is by an input and control signal.The electronic switching circuit of being made up of transistor T 1 and relay J that links is formed, and the one group of normally closed contact of relay J and the two ends of crystal diode 2 link.
The operation principle of present embodiment is to utilize the direct-flow input signal of input to make transistor T 1 saturation conduction, and the relay J adhesive disconnects normally closed contact, reaches the purpose of adjusting heating power.The substrate of its transistor T 1 can with the temperature sensing control circuit of soy bean milk making machine or electric cooker or the high potential output that the overflows control circuit formation Control Network that links.
Embodiment four referring to accompanying drawing 6, present embodiment mainly is applicable to the electric heater unit that requires contactless control.It is characterized in that control switch (1) by transistor (T2) with connect transistor (T2) base stage and the below-center offset resistor of expelling plate is formed, the negative pole of its collector electrode and crystal diode (2) links, and the positive pole of expelling plate and crystal diode (2) links.
The operation principle of present embodiment is to utilize control voltage to make transistor (T2) saturation conduction, and when negative position appearred in base stage control voltage, transistor (T2) ended, and causes the unidirectional conducting power decreasing of power supply circuits.The deficiency of present embodiment is with the civil power loop direct commissure is arranged.Only limit to using under the isolation fully.To avoid the injury of getting an electric shock.
Claims (6)
1, the electric heater unit adjusted of a kind of automated power comprises with the civil power being the heating wire (3) of power supply, it is characterized in that composing in parallel power regulator and heating wire (3) coupled in series is constituted by control switch (1) crystal diode (2).
2, the electric heater unit of adjusting according to the described automated power of claim 1, the control switch (1) that it is characterized in that power regulator can be the temp control switch that the contact is arranged, the baroswitch that the contact is arranged, can be by one group of normally closed contact of the relay (J) of transistor (T1) driving, can also adopt the unidirectional dc switch circuit of forming by switch transistor (T2).
3, the electric heater unit of adjusting according to claim 1,2 described automated powers is characterized in that control switch (1) is constituted by being installed in the fixed contact (4) on the switch baseplate (8), the moving contact (5) that is connected with bimetal leaf (7) and eccentric wheel (6).
4, the electric heater unit of adjusting according to claim 1,2 described automated powers, it is characterized in that control switch (1) is by the fixed contact (11), (18) that have terminal block (12), (17) on the supporting bracket (16) that is installed in the shell (9), moving contact that has push rod (14) (10) that fits with fixed contact (11), (18) and the pressure-bearing plate (13) that links to each other with push rod (14) are formed, on push rod (14), be with a return spring (15), one end and pressure-bearing plate (13) pressing, the other end and supporting bracket (16) press together.
5, the electric heater unit of adjusting according to claim 1,2 described automated powers is characterized in that control switch 1 is by an input and control signal.The electronic switching circuit of being made up of transistor (T1) and relay (J) that links is formed, and the one group of normally closed contact of relay (J) and the two ends of crystal diode (2) link.
6, the electric heater unit of adjusting according to claim 1,2 described automated powers, it is characterized in that control switch (1) is by transistor (T2) with connect transistor (the below-center offset resistor of T20 base stage and expelling plate is formed, the negative pole of its collector electrode and crystal diode (2) links, and expelling plate and crystal diode (2) positive pole links.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00110860 CN1307439A (en) | 2000-01-26 | 2000-01-26 | Automatic power-adjusting electric heating device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00110860 CN1307439A (en) | 2000-01-26 | 2000-01-26 | Automatic power-adjusting electric heating device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1307439A true CN1307439A (en) | 2001-08-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 00110860 Pending CN1307439A (en) | 2000-01-26 | 2000-01-26 | Automatic power-adjusting electric heating device |
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| Country | Link |
|---|---|
| CN (1) | CN1307439A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US12235475B2 (en) | 2019-02-08 | 2025-02-25 | Avery Dennison Corporation | Flexible retroreflective sheeting |
-
2000
- 2000-01-26 CN CN 00110860 patent/CN1307439A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US12235475B2 (en) | 2019-02-08 | 2025-02-25 | Avery Dennison Corporation | Flexible retroreflective sheeting |
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Addressee: Wang Xuning Document name: Notice of first review |
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |