Electric-heating cooking utensil pressure displacement detecting and controlling device
Technical field
The utility model relates to a kind of electric-heating cooking utensil pressure displacement detecting and controlling device.
Background technology
CN200510100475.9 open " a kind of pressure detection method of electric pressure cooking saucepan and checkout gear ".Its purpose provides a kind of pot deflection within the continuity gaging pressure pot that passes through, thereby can the accurate method and apparatus that detects, controls the pot inner pressure of electric pressure cooking saucepan in continuity ground.Its technology constitutes: the pressure detection method of described electric pressure cooking saucepan, and adopt strain gauge as detection means, strain gauge is placed on a certain appropriate location in space between pressure cooker shell and the interior pot, and utilizes a transmission arm, the swell increment of pot in the perception; When interior pot during because of high compression swelling, transmission arm is converted to a displacement with interior pot swell increment, and the elastic matrix that promotes strain gauge correspondingly is out of shape; The strain gauge elastic matrix of distortion also changes the electrical characteristics of adhering to the responsive foil on it thereupon; The controlled signal of telecommunication that produces because of electrical property change flows to central controller; Central controller gives computing to the signal of telecommunication that receives, output control signal and demonstration signal.The pressure-detecting device of described electric pressure cooking saucepan, a certain appropriate location, space between pressure cooker shell and interior pot is provided with strain gauge and transmission arm; One end of transmission arm directly contacts with interior pot outer surface or heat-generating disc bottom surface, and the other end directly contacts with the elastic matrix of strain gauge; Strain gauge is electrically connected with the central controller of pressure cooker.Its weak point is: the difficulty of adjusting, be subject to disturb, and also exist and will carry out problems such as creep compensation and temperature-compensating.
CN200720055636.1 has announced a kind of " pressure-detecting device of electric pressure cooking saucepan ".Its purpose provides that a kind of heat resistance is good, the displacement of interior pot that again can be by the continuous measurement electric pressure cooking saucepan come the device of continuous detecting, control electric pressure cooking saucepan pot inner pressure.Its technology constitutes: the pressure-detecting device of described electric pressure cooking saucepan, comprise central controller, it is characterized in that: between the heating plate of electric pressure cooking saucepan and shell, slide resistor is set, described slide resistor comprises sliding resistance body and the sliding electrode that slides on sliding resistance body, described slide resistor is electrically connected with described central controller; Between the heating plate of slide resistor and electric pressure cooking saucepan, transmission arm is set.Its weak point is: the difficulty of adjusting, wearing and tearing easily.
The utility model content
The purpose of this utility model is to overcome above-mentioned weak point of the prior art, provides a kind of need not to adjust, and assembling is simple, the electric-heating cooking utensil pressure displacement detecting and controlling device of no drift, nothing decay, good reliability.
The purpose of this utility model can reach by following measure:
This electric-heating cooking utensil pressure displacement detecting and controlling device comprises electric-heating cooking utensil, and its special character is that it comprises:
One support plate, its plate face are offered a caulking groove that supplies gear drive to be arranged with first, the perpendicular support that is convexly equipped with in the long edge, limit of one;
One observing and controlling device is installed in another relative edge, long limit of the long limit of support plate caulking groove support;
One gear drive, coaxial connection of one end and interlock observing and controlling device, its other end produces the tooth bar that touches to the bottom offset driving member down with the effect of electric-heating cooking utensil pot inner pressure and is connected;
One control circuit is used for the signal of telecommunication that pot displacement in the electric-heating cooking utensil becomes is amplified, sends into single-chip microcomputer to obtain the pressure instant messages;
The displacement that the tooth bar of described gear drive produces pot pressurized in the elastic packing electric-heating cooking utensil amplifies and is converted to swing offset through the transmission of gear drive, makes the observing and controlling device of coaxial connection obtain the displacement signal of telecommunication of pot in the electric-heating cooking utensil; Control circuit is sent into single-chip microcomputer after its signal is amplified, and SCM program is controlled the electric-heating cooking utensil heating system according to pressure.
The purpose of this utility model can also reach by following measure:
Described observing and controlling device is an angular displacement sensor.
Described observing and controlling device is the magnetic degree sensor.
Described observing and controlling device is magnetic degree encoder or mechanical rotary encoder.
Described gear drive is by gear wheel, the pinion of a coaxial closed assembly, the gear of its gear wheel engagement and the coaxial closed assembly of observing and controlling device, its pinion and the effect of electric-heating cooking utensil pot inner pressure down generation to tooth bar that the bottom offset driving member touches, support plate caulking groove side the support that is convexly equipped with perpendicular to the caulking groove edge between the wheel shaft of observing and controlling device wheel shaft, coaxial closed assembly gear wheel, pinion, be connected to the coaxial closed assembly gear of observing and controlling device outer end axle and cantilever tip face on the hairspring spring composition that sets firmly.
Described control circuit comprises: observing and controlling device, single-chip microcomputer, amplifying circuit, resistance, triode, relay, electric hot tray, wherein: the output signal of observing and controlling device is sent into single-chip microcomputer through the dephased analog signal of amplifying circuit acquisition two-way and is counted processing, the grounded emitter of triode Q, single-chip microcomputer one delivery outlet is through the base stage of resistance R 3 access triode Q, and the colelctor electrode of triode Q controls electric hot tray through relay.
Described control circuit comprises: observing and controlling device, single-chip microcomputer, shaping circuit, resistance, triode, relay, electric hot tray, wherein: the output signal of observing and controlling device is sent into single-chip microcomputer through the dephased incremental encoding pulse signal of shaping circuit acquisition two-way and is counted processing, the grounded emitter of triode Q, single-chip microcomputer one delivery outlet is through the base stage of resistance R 3 access triode Q, and the colelctor electrode of triode Q controls electric hot tray through relay.
The utility model has following advantage compared to existing technology:
1, installs easily, need not adjust.
2, do not have drift, do not have decay.
3, anti-interference, good reliability.
Description of drawings
Fig. 1 is the utility model control principle block diagram.
Fig. 2 is the structural representation of first kind of embodiment of the utility model electric-heating cooking utensil pressure displacement detecting and controlling device.
Fig. 3 is the structural representation of second kind of embodiment of the utility model electric-heating cooking utensil pressure displacement detecting and controlling device.
Fig. 4 is the structural representation of mechanical type rotary encoder among Fig. 2.
Fig. 5 is the pressure testing and controlling circuit diagram of first kind of embodiment of the utility model electric-heating cooking utensil pressure displacement detecting and controlling device.
Fig. 6 is the pressure testing and controlling circuit diagram of second kind of embodiment of the utility model electric-heating cooking utensil pressure displacement detecting and controlling device.
The specific embodiment
The utility model is described in further detail below in conjunction with accompanying drawing:
Fig. 1, Fig. 2, Fig. 4 show first embodiment of the present utility model.
See also shown in Figure 1ly, in the present embodiment, described this electric-heating cooking utensil pressure displacement detecting and controlling device comprises electric-heating cooking utensil, and it comprises:
One support plate 1, its plate face are offered a caulking groove 11 that supplies gear drive 3 to be arranged with first, the perpendicular support 12 that is convexly equipped with in the long edge, limit of one;
One magnetic degree sensor 2 is installed in another relative edge, long limit of the long limit of support plate caulking groove support 12;
One gear drive 3, coaxial connection of one end and interlock magnetic degree sensor 2, its other end produces the tooth bar 34 that touches to bottom offset driving member (not shown) down with the effect of electric-heating cooking utensil pot inner pressure and is connected;
One control circuit, be used for behind the signal of telecommunication that becomes of pot displacement in the electric-heating cooking utensil to its amplification, send into single-chip microcomputer to obtain the pressure instant messages;
The tooth bar 34 of described gear drive 3 amplifies the displacement that pot pressurized in the elastic packing electric-heating cooking utensil produces through the transmission of gear drive 3, and be converted to swing offset, change by magnetic degree sensor 2 again, thus the displacement signal of telecommunication of pot in the acquisition electric-heating cooking utensil; Control circuit is sent into single-chip microcomputer after this signal is amplified, and SCM program is controlled the electric-heating cooking utensil heating system according to pressure.
Described gear drive 3 is by the gear wheel 31 of a coaxial closed assembly, pinion 32, its gear wheel 31 meshes the gear 33 with magnetic degree sensor 2 coaxial closed assemblies, its pinion 32 engagements produce the tooth bar 34 that touches to the bottom offset driving member down with the effect of electric-heating cooking utensil pot inner pressure, be positioned at support plate caulking groove side and be positioned at magnetic degree sensor 2 wheel shafts 4, coaxial closed assembly gear wheel 31, the support 12 that is convexly equipped with perpendicular to the caulking groove edge between the wheel shaft 5 of pinion 32, be connected to the coaxial closed assembly gear 33 outer end axles 4 of magnetic degree sensor 2 and support 12 top end faces on the hairspring spring 6 that sets firmly form.
See also shown in Figure 5, described control circuit comprises: magnetic degree sensor, single-chip microcomputer, amplifying circuit, resistance, triode, relay, electric hot tray, wherein: the magnetic degree sensor will obtain the dephased analog signal of two-way through amplifying circuit and send into single-chip microcomputer and count processing, the grounded emitter of triode Q, single-chip microcomputer one delivery outlet is through the base stage of resistance R 3 access triode Q, and the colelctor electrode of triode Q controls electric hot tray through relay.
Operation principle: the tooth bar 34 of described gear drive 3 amplifies the displacement that pot pressurized in the elastic packing electric-heating cooking utensil produces through the transmission of gear drive 3, and be converted to swing offset, change by magnetic degree sensor 2 again, thereby obtain the interior displacement signal of telecommunication of electric-heating cooking utensil pot; Control circuit is sent into single-chip microcomputer after this signal is amplified, and SCM program is controlled the electric-heating cooking utensil heating system according to pressure.
Fig. 1, Fig. 3, Fig. 4, Fig. 6 show second embodiment of the present utility model.
See also Fig. 3, shown in Figure 4, in the present embodiment, described electric-heating cooking utensil pressure displacement detecting and controlling device comprises electric-heating cooking utensil, and it comprises:
One support plate 1, its plate face are offered a caulking groove 11 that supplies gear drive 3 to be arranged with first, the perpendicular support 12 that is convexly equipped with in the long edge, limit of one;
One magnetic degree encoder or mechanical rotary encoder 2 are installed in another relative edge, long limit of the long limit of support plate caulking groove support 12;
One gear drive 3, the coaxial connection of one end and interlock magnetic degree encoder or mechanical rotary encoder 2, its other end produce the tooth bar 34 that touches to bottom offset driving member (not shown) down with the effect of electric-heating cooking utensil pot inner pressure and are connected;
One control circuit is used for a pot displacement in the electric-heating cooking utensil is become behind the displacement signal its shaping, sends into single-chip microcomputer to obtain the pressure instant messages;
The displacement that the tooth bar 34 of described gear drive 3 produces pot pressurized in the elastic packing electric-heating cooking utensil is amplified and is converted to swing offset, the displacement signal that magnetic degree encoder or mechanical rotary encoder 2 are obtained in the electric-heating cooking utensil pots through the transmission of gear drive 3; Control circuit is sent into single-chip microcomputer after its signal is handled, and SCM program is controlled the electric-heating cooking utensil heating system according to pressure.
Described gear drive 3 is by the gear wheel 31 of a coaxial closed assembly, pinion 32, its gear wheel 31 meshes the gear 33 with magnetic degree encoder or mechanical rotary encoder 2 coaxial closed assemblies, its pinion 32 engagements produce the tooth bar 34 that touches to the bottom offset driving member down with the effect of electric-heating cooking utensil pot inner pressure, be positioned at support plate caulking groove 11 sides and be positioned at magnetic degree encoder or mechanical rotary encoder 2 wheel shafts 4, coaxial closed assembly gear wheel 31, the support 12 that is convexly equipped with perpendicular to the caulking groove edge between the wheel shaft 5 of pinion 32, be connected to magnetic degree encoder or mechanical rotary encoder 2 coaxial closed assembly gear 33 outer end axles and support 12 top end faces on the hairspring spring that sets firmly 6 form.
See also shown in Figure 6, described control circuit comprises: magnetic degree encoder or mechanical rotary encoder, single-chip microcomputer, shaping circuit, resistance, triode, relay, electric hot tray, wherein: magnetic degree encoder or mechanical rotary encoder through signals are sent into single-chip microcomputer through the dephased incremental encoding pulse signal of shaping circuit output two-way and are counted processing, the grounded emitter of triode Q, single-chip microcomputer one delivery outlet is through the base stage of resistance R 3 access triode Q, and the colelctor electrode of triode Q controls electric hot tray through relay.
Operation principle: the displacement that the tooth bar 34 of described gear drive 3 produces pot pressurized in the elastic packing electric-heating cooking utensil is amplified and is converted to swing offset, the displacement signal that magnetic degree encoder or mechanical rotary encoder 2 are obtained in the electric-heating cooking utensil pots through the transmission of gear drive 3; Control circuit is sent into single-chip microcomputer after its signal is handled, and SCM program is controlled the electric-heating cooking utensil heating system according to pressure.
The above only is preferred embodiment of the present utility model, and all equivalent deformation and modifications of being done according to the utility model claim scope all should belong to the covering scope of the utility model claim.