CN2358794Y

CN2358794Y - Circuit control device of pressure controlled type electric pressure cooker

Info

Publication number: CN2358794Y
Application number: CN99235204U
Authority: CN
Inventors: 黄权章; 郭灿佳; 王忠民
Original assignee: RONGSHENG ELECTRIC CO Ltd GUANGDONG PROV
Current assignee: RONGSHENG ELECTRIC CO Ltd GUANGDONG PROV
Priority date: 1999-01-20
Filing date: 1999-01-20
Publication date: 2000-01-19
Anticipated expiration: 2009-01-20
Also published as: WO2000044096A2; WO2000044096A3

Abstract

The utility model relates to a circuit control device of a pressure controlled type electric pressure cooker. The pressure of the utility model can be adjusted and can be protected in a timing mode. The utility model comprises an inner cooker, an outer cooker, a heat generation disc, etc. Elastic supporters which can lead the inner cooker and the outer cooker to be connected in an elastic mode are arranged between the heat generation disc and the outer cooker. The bottom of the heat generation disc is fixed with a pushing rod. The pushing rod drives an L-shaped transmission rod which is movably hinged on a pressure adjusting support frame. The L-shaped transmission rod drives a control hammer on a cantilever arm of a flicker switch. The on-off of a circuit is controlled. The stability of the pressure preset in the cooker is kept. The connected relation controlled by the pressure of the utility model is simple, a signal can be directly transferred, and the accuracy and the reliability of timing pressure maintaining and pressure regulating functions can be ensured.

Description

A kind of circuit control device of pressure controlled electric pressure cooker

The utility model relates to a kind of pressure-controlled adjustable in pressure, regularly the circuit control device of pressurize electric pressure cooking saucepan.

The pressure control and the time controlling organization of existing pressure controlled electric pressure cooker, mostly be procedural control mode, structure is that transmission Chinese patent ZL90109422 is given the action of having shown by the linear displacement amount control contact switch of interior pot under pressure with curve wheel or cam control gear, realizes level pressure control with this; Regularly the control of the time of pressurize is realized by the curve wheel (involute wheel) and the cooperation of gear train, this structure makes electric pressure cooking saucepan can only reach unique peak value operating pressure, be that the peak value operating pressure is fixed, it is not high that the control of dwell time does not have continuity, accuracy, it is random poor to use, the structure relative complex, the requirement on machining accuracy height.Pressure that Chinese patent ZL95224059 provides and time controlling organization are finished regularly and pressurize by the cooperation of synchronous motor, gear train and cam, after reaching the pressure peak of setting, and along with the continuity of time, the rotation of cam, pressure progressively reduces.Though this structure has realized reaching sharply step-down behind the peak value, the pressure fall off rate is still higher, can not be in regularly voltage stabilizing of peak region, and have aforesaid uses randomness poor, complex structure and other problems.

The purpose of this utility model provides a kind of needs according to culinary art, can be within the specific limits arbitrarily selection pressure, select to keep the electric pressure cooking saucepan usefulness of the time of this pressure arbitrarily, adjustable in pressure, the circuit control device of pressurize regularly.

This electric pressure cooking saucepan adjustable in pressure, the circuit control device of timing pressurize, comprise and be fixed on the heat-generating disc bottom surface, the pressure of interior pot is converted to the push rod of displacement, one end is connected, transmits the drive link of displacement with push rod, the cantilevered that the other end of drive link moves with being subjected to displacement control is flashed tap changer and is connected, the outer pot of pot, pressurize timing mechanism etc. in holding in addition, wherein drive link is the L type, be movably articulated on the pressure regulation support, the back of L is connected with the control hammer that cantilevered is flashed tap changer.Torsion spring is equipped with at L type drive link and the outer pot wall place of being movably hinged, and this torsion spring is pressed on the movable end of L type drive link on the push rod lower surface.The pressure regulation support is fixed on the outer pot wall, or fixing wanting on the shell, or is fixed on and can keeps flashing on the support of tap changer static determinacy.It is the control hammer of sphere that the far-end of cantilevered flash switch has a contact-making surface, and the control hammer is being slidingly connected under the some contact condition with the insulation contact-making surface that protrude at L type drive link back.The control that the movable contact modulated of cantilevered flash switch bears down on one and bores, the tip that is the pressure regulation addendum cone contacts with the movable contact underarm of cantilevered flash switch all the time--drive pressure regulation addendum cone advance and retreat by rotating adjusting pressuring knob, then change to the underarm applied pressure, make the displacement of flashing tap changer action just different, and the number of displacement has reacted the size of pot inner pressure.

Structure of the present utility model is significantly simplified, changing in the past, the synchronous motor driven gear is the convention of timing, but utilize its stable rotating speed to do the timing basis, flash the break-make of tap changer by the variation control of displacement, the timing of main circuit general rule is interrupted, main circuit is disconnected when then adding up, until pressurize to the time that sets in advance.Thus, regularly pressurize, pressure regulating device is simple in structure understands, the direct rare loss of signal transmission, and accurate timing, pressure setting and dwell time are provided with arbitrarily; The cancellation curve wheel makes production and processing easier, and cost is low, has improved dependability.

Accompanying drawing 1 (A), (B) are the utility model partial assembled cross-sectional schematic;

Accompanying drawing 2 is enlarged diagrams of flashing tap changer.

The pressure of the utility model by producing after placing outer pot 1 interior pot 2 li interior food to be heated, pot and heat-generating disc 3 in forcing, the push rod 4 that is fixed on the heat-generating disc bottom surface produce corresponding displacement downwards, push rod promotes to be fixed on the L type drive link 5 on the outer pot wall, insulation protrusion 7 by its back, displacement signal is passed to the control hammer 8 that is positioned at flashing tap changer far-end cantilever place, drive the displacement deenergization that this switch is being set with the control hammer.L type drive link is fixed on the pressure regulation support 10, with the push rod contact position set screw 6 is housed, and is used to regulate the position of this drive link and the force-bearing situation of control hammer.The flashing tap changer is the normally closed type contact switch, is connected in parallel in the heat-generating disc circuit with the synchronous motor timer, and the synchronous motor timer is controlled by knob regularly; Contact for moving between the control hammer of L type drive link and the cantilever far-end that flashes tap changer, L type drive link is by the displacement up or down that interior pot produces, and will control hammer and lift or lower, and forces movable contact with the fixed contact disengaging or contact cut-out or connection power supply; The movable contact below has banking stop, the contact force of movable contact and fixed contact restricted by energy-storaging spring and underarm.Underarm contacts with pressure regulation addendum cone 9 all the time, and pressure regulation addendum cone and adjusting pressuring knob are fixed on the axle.Pressure is once selected, and the position of pressure regulation addendum cone just is fixed, and its power that imposes on underarm also just determines, the required displacement of flashing tap changer action also just determines, selected down with pressure, corresponding a series of different parameters.The flashing tap changer is connected during heat-generating disc work, and the synchronous motor timer is by short circuit; After timing accumulative total used up, timer made zero, and this switch disconnects the heat-generating disc heater circuit, and thermal circuit is connected.

During use,, select required dwell time and pressure, connect the power supply heat-generating disc then and begin heating by timing knob and adjusting pressuring knob according to the food of culinary art.Add and pine for, food produces vapour pressure in the pot, because interior pot sealed fully, pot cover and interior pot are for being rigidly connected, and interior pot can be to top offset, and pot pushes heat-generating disc together to bottom offset in forcing, and drive push rod, drive link produce corresponding displacement.When inner pot pressure reached setting pressure, drive link was delivered to the flashing tap changer to displacement signal, driving switch action deenergization, and heat-generating disc quits work.Because tap changer and insulation switch are all opened a way, the synchronous motor timer is connected the timing of starting working.Vapour pressure is along with heating stops to descend gradually in the pot, displacement also reduces thereupon, the flashing tap changer is closed again when reaching certain value, the heat-generating disc heating of switching on once more, the synchronous motor timer stops timework and goes round and begins again thus, make force value that pressure remains on setting cover time of setting up to timer, cut off heating power supply fully, electric pressure cooking saucepan enters keeping warm mode.

Claims

1. pressure-controlled adjustable in pressure, the circuit control device of timing pressurize electric pressure cooking saucepan, comprise and be fixed on heat-generating disc (3) bottom surface, the pressure of interior pot (2) is converted to the push rod (4) of displacement, one end is connected with push rod, transmit the drive link (5) of displacement, the cantilevered that the other end of drive link moves with being subjected to displacement control is flashed tap changer and is connected, the outer pot (1) of pot in holding in addition, the pressurize timing mechanism, it is characterized in that drive link is the L type, be movably articulated on the pressure regulation support (11), the back of L is connected with the control hammer (8) that cantilevered is flashed tap changer.

2. circuit control device as claimed in claim 1 is characterized in that L type drive link and the pressure regulation support place of being movably hinged be equipped with torsion spring, and this torsion spring is pressed on the movable end of L type drive link on the push rod lower surface.

3. circuit control device as claimed in claim 1 or 2 is characterized in that the pressure regulation support is fixed on the outer pot wall, or fixing wanting on the shell, or is fixed on and can keeps flashing on the support of tap changer static determinacy.

4. it is the control hammer of sphere that circuit control device as claimed in claim 1 or 2, the far-end that it is characterized in that the cantilevered flash switch have a contact-making surface, and the control hammer is being slidingly connected under the some contact condition with the insulation contact-making surface that protrude at L type drive link back.