CN203953289U - Pressure cooking appliance - Google Patents
Pressure cooking appliance Download PDFInfo
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- CN203953289U CN203953289U CN201420283889.4U CN201420283889U CN203953289U CN 203953289 U CN203953289 U CN 203953289U CN 201420283889 U CN201420283889 U CN 201420283889U CN 203953289 U CN203953289 U CN 203953289U
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Abstract
The utility model discloses a kind of pressure cooking appliance, comprising: pot body; Pot cover; Heating circuit; The first trigger switch and second trigger switch of series connection; Relay; The first switch detection circuit for detection of the switching signal of the first trigger switch; Second switch testing circuit for detection of the switching signal of the second trigger switch; Folding lid indicator; Control circuit, control circuit is connected with the first switch detection circuit, second switch testing circuit and folding lid indicator respectively, pot cover and pot body not during the state in complete closure control circuit according to the switching signal of the switching signal of the first trigger switch or the second trigger switch, control folding and cover indicator and send alarm.This pressure cooking appliance can make heating circuit in pressure cooking appliance in off-state when pot cover and pot body are completely closed, and sends alarm, thereby can guarantee to cook safety.
Description
Technical field
The utility model relates to living electric apparatus technical field, particularly a kind of pressure cooking appliance.
Background technology
Pressure cooking appliance for example electric pressure cooking saucepan when cooking food, the pressure in pot generally can be very high, therefore need the pot cover of electric pressure cooking saucepan and pot body completely closed to guarantee to cook safety, thereby need to carry out folding lid when culinary art, detect.
In correlation technique, be generally whether by tongue tube, detect pot cover completely closed with pot body, after tongue tube detects pot cover and the complete closure of pot body, control again electric pressure cooking saucepan and start to cook.But, if can cause erroneous judgement when tongue tube breaks down, thereby make electric pressure cooking saucepan when culinary art, have certain potential safety hazard.
Utility model content
The purpose of this utility model is intended at least solve above-mentioned technological deficiency.
For this reason, the purpose of this utility model is to propose a kind of pressure cooking appliance, this pressure cooking appliance can make heating circuit in pressure cooking appliance in off-state when pot cover and pot body are completely closed, and sends alarm, thereby can guarantee to cook safety.
For achieving the above object, a kind of pressure cooking appliance the utility model proposes, comprising: pot body; Pot cover; Heating circuit, one end of described heating circuit is connected with one end of the alternating current of input; The first trigger switch and second trigger switch of series connection, one end of described the first trigger switch is connected with the other end of described alternating current, and the other end of described the first trigger switch is connected with one end of described the second trigger switch; Relay, one end of the switch in described relay is connected with the other end of described the second trigger switch, and the other end of the switch in described relay is connected with the other end of described heating circuit; Detect the first switch detection circuit of the switching signal of described the first trigger switch, one end of described the first switch detection circuit is connected with the other end of described the first trigger switch; Detect the second switch testing circuit of the switching signal of described the second trigger switch, one end of described second switch testing circuit is connected with the other end of described the second trigger switch; Folding lid indicator; And control circuit, described control circuit respectively with the other end of described the first switch detection circuit, the control coil in the other end of described second switch testing circuit, described relay is connected with described folding lid indicator, described in described pot cover and described pot of body are not during the state in complete closure, control circuit is controlled described folding according to the switching signal of the switching signal of described the first trigger switch or described the second trigger switch and is covered indicator and send alarm.
According to pressure cooking appliance of the present utility model, the first trigger switch and second trigger switch of series connection are set by the other end of the alternating current in input, whether not one in the first trigger switch and the second trigger switch in order to detect pot cover and the pot body state in complete closure, and at pot cover with pot body not during the state in complete closure, one in the first trigger switch and the second trigger switch in off-state, heating circuit also disconnects like this, and, pot cover and pot body not during the state in complete closure control circuit according to the switching signal of the switching signal of the first trigger switch or the second trigger switch, control folding lid indicator and send alarm, prompting user pot cover is completely not closed with pot body, when bringing convenience to user, guarantee culinary art safety.
Further, any one in described the first trigger switch and described the second trigger switch is folding lid sense switch.
Wherein, when described the first trigger switch is described folding lid sense switch, described the second trigger switch is pressure switch.
And described folding lid sense switch can be normally closed switch or normal open switch.
Preferably, described folding lid indicator comprises folding lid indicator lamp and/or auditory tone cues assembly.
Particularly, when described folding lid sense switch is described normally closed switch, described folding lid sense switch is microswitch.
Particularly, described the first switch detection circuit or described second switch testing circuit are any one in voltage detecting circuit, zero cross detection circuit or optocoupler testing circuit.
Wherein, when described the first switch detection circuit is described zero cross detection circuit, between described zero cross detection circuit and described the first trigger switch, be also connected with the first bleeder circuit, described the first bleeder circuit comprises the first resistance and second resistance of series connection, described zero cross detection circuit specifically comprises: the second diode, and the negative electrode of described the second diode is connected with described the first bleeder circuit; The second triode, the base stage of described the second triode is connected with the anode of described the second diode, and the emitter stage of described the second triode is connected with the power supply of the second predeterminated voltage; The 4th resistance, described the 4th resistance is connected between the base stage and emitter stage of described the second triode; The first electric capacity, one end of described the first electric capacity is connected with the base stage of described the second triode, the other end ground connection of described the first electric capacity; The 5th resistance, one end of described the 5th resistance is connected with the colelctor electrode of described the second triode, the other end ground connection of described the 5th resistance; The 6th resistance, one end of described the 6th resistance is connected with the colelctor electrode of described the second triode, and the other end of described the 6th resistance is connected with described control circuit; The second electric capacity, one end of described the second electric capacity is connected with the other end of described the 6th resistance, the other end ground connection of described the second electric capacity.
Particularly, described heating circuit comprises heating plate, one end of described heating plate is connected with one end of described alternating current, the other end of described heating plate is connected with one end of switch in described relay, described control circuit comprises: the first diode, and the negative electrode of described the first diode is connected respectively with the power supply of the first predeterminated voltage with one end of control coil in described relay; Voltage-stabiliser tube, the anode of described voltage-stabiliser tube is connected with the anode of described the first diode, and the negative electrode of described voltage-stabiliser tube is connected with the other end of control coil in described relay; The first triode, the colelctor electrode of described the first triode is connected with the other end of control coil in described relay, the grounded emitter of described the first triode; The 3rd resistance, described the 3rd resistance is connected between the base stage and emitter stage of described the first triode; Control chip, the heating control end of described control chip is connected with the base stage of described the first triode, the first switching signal test side of described control chip is connected with described the first switch detection circuit, the second switch signal detection end of described control chip is connected with described second switch testing circuit, and the folding lid indication control end of described control chip is connected with described folding lid indicator.
Particularly, described auditory tone cues assembly comprises the driver element of loudspeaker and the described loudspeaker of driving.
In the utility model, described pressure cooking appliance also comprises low-voltage power supply circuit, described low-voltage power supply circuit is connected described alternating current to be converted to the power supply of the first predeterminated voltage and the power supply of the second predeterminated voltage with described alternating current, wherein, described the first predeterminated voltage is greater than described the second predeterminated voltage.
The aspect that the utility model is additional and advantage in the following description part provide, and part will become obviously from the following description, or recognize by practice of the present utility model.
Accompanying drawing explanation
Above-mentioned and/or the additional aspect of the utility model and advantage will become from the following description of the accompanying drawings of embodiments and obviously and easily understand, wherein:
Figure 1A is according to the circuit diagram of the pressure cooking appliance of the utility model embodiment;
Figure 1B is according to the circuit diagram of the pressure cooking appliance of an embodiment of the utility model;
Fig. 2 is according to the schematic diagram of the pressure cooking appliance of an embodiment of the utility model;
Fig. 3 is according to the schematic diagram of the electric pressure cooking saucepan of an embodiment of the present utility model;
Fig. 4 is according to the top view of the electric pressure cooking saucepan of an embodiment of the present utility model;
Fig. 5 is according to the schematic diagram of the pot cover of the electric pressure cooking saucepan of an embodiment of the present utility model;
Fig. 6 is according to the schematic diagram of the jacket of the electric pressure cooking saucepan of an embodiment of the present utility model;
Fig. 7 is according to the structural representation of the microswitch of the electric pressure cooking saucepan of an embodiment of the present utility model;
Fig. 8 is according to the schematic diagram of the microswitch of the electric pressure cooking saucepan of an embodiment of the present utility model;
Fig. 9 is according to the side view of the microswitch in Fig. 7;
Figure 10 is according to the structural representation of the microswitch of the electric pressure cooking saucepan of another embodiment of the present utility model;
Figure 11 is according to the structural representation of the push rod of the microswitch of an embodiment of the present utility model;
Figure 12 is according to the structural representation of the push rod of the microswitch of another embodiment of the utility model;
Figure 13 is according to the structural representation of the microswitch of another embodiment of the present utility model;
Figure 14 is according to the structural representation of the microswitch of another embodiment of the present utility model;
Figure 15 is according to the circuit diagram of the voltage detecting circuit of an embodiment of the utility model;
Figure 16 is according to the circuit diagram of the auditory tone cues assembly of an embodiment of the utility model;
Figure 17 is according to the circuit diagram of the zero cross detection circuit of an embodiment of the utility model.
Reference numeral:
100: electric pressure cooking saucepan;
1: pot body; 12: shell; 13: interior pot; 14: jacket; 141: double-screw bolt; 142: securing member; 143: through hole;
2: pot cover; 21: boss;
3: microswitch (folding lid sense switch, normally closed switch, the first trigger switch); 31: pilot hole;
10: fore shell; 11: installing hole;
20: back cover;
30: securing supports;
40: active supporting piece;
50: stator; 51: the first contacts;
60: moving plate; 61: moving plate first end; 62: moving plate the second end; 63: the second contacts;
70: push rod; 71: pushing part; 711: lower end; 72 (72a): connecting portion; 721 (721a): first end; 722 (722a) second end; 73: diversion portion; 74: retaining section; 75: silica gel sheath;
80: elastic component;
90: spring leaf;
101: heating circuit; 1011: heating plate;
102: the first switch detection circuits (zero cross detection circuit); The second diode D2, the second triode Q2, the 4th resistance R 4, the first capacitor C 1, the 5th resistance R 5, the 6th resistance R 6 and the second capacitor C 2;
103: folding lid indicator; 1031: folding lid indicator lamp; 1032: auditory tone cues assembly; 10321: driver element; Loudspeaker: BUZ;
104: control circuit; 1041: control chip; The first diode D1, voltage-stabiliser tube ZD1, the first triode Q1, the 3rd resistance R 3;
105: the first bleeder circuits; The first resistance R 1 and the second resistance R 2;
106: the second bleeder circuits;
107: second switch testing circuit (voltage detecting circuit);
108: low-voltage power supply circuit;
109: temperature sensing circuit;
110: temperature sensor;
K1: relay; K2: the second trigger switch (pressure switch).
The specific embodiment
Describe embodiment of the present utility model below in detail, the example of described embodiment is shown in the drawings, and wherein same or similar label represents same or similar element or has the element of identical or similar functions from start to finish.Below by the embodiment being described with reference to the drawings, be exemplary, only for explaining the utility model, and can not be interpreted as restriction of the present utility model.
Disclosing below provides many different embodiment or example to be used for realizing different structure of the present utility model.Of the present utility model open in order to simplify, hereinafter the parts of specific examples and setting are described.Certainly, they are only example, and object does not lie in restriction the utility model.In addition, the utility model can be in different examples repeat reference numerals and/or letter.This repetition is in order to simplify and object clearly, itself do not indicate the relation between discussed various embodiment and/or setting.In addition, the various specific technique that the utility model provides and the example of material, but those of ordinary skills can recognize the property of can be applicable to of other techniques and/or the use of other materials.In addition, First Characteristic described below Second Characteristic it " on " structure can comprise that the first and second Characteristics creations are for the direct embodiment of contact, also can comprise the embodiment of other Characteristics creation between the first and second features, such the first and second features may not be direct contacts.
In description of the present utility model, it should be noted that, unless otherwise prescribed and limit, term " installation ", " being connected ", " connection " should be interpreted broadly, for example, can be mechanical connection or electrical connection, also can be the connection of two element internals, can be to be directly connected, and also can indirectly be connected by intermediary, for the ordinary skill in the art, can understand as the case may be the concrete meaning of above-mentioned term.
The pressure cooking appliance proposing according to the utility model embodiment is described with reference to the accompanying drawings.Wherein, pressure cooking appliance can be electric pressure cooking saucepan.
Figure 1A is according to the circuit diagram of the pressure cooking appliance of the utility model embodiment, and Fig. 2 is according to the schematic diagram of the pressure cooking appliance of an embodiment of the utility model.As shown in Figure 1A and Fig. 2, this pressure cooking appliance 100 comprises: the first trigger switch 3 of pot body 1, pot cover 2, heating circuit 101, series connection and the second trigger switch K2, relay K 1, the first switch detection circuit 102, second switch testing circuit 107, folding lid indicator 103 and control circuit 104.
Wherein, one end of heating circuit 101 can for example, by Thermal Cutoffs and the alternating current (220V) of input one end for example zero line N be connected, one end of the first trigger switch 3 equally can be by Thermal Cutoffs and alternating current the other end for example live wire L be connected, the other end of the first trigger switch 3 is connected with one end of the second trigger switch K2, one end of switch in relay K 1 is connected with the other end of the second trigger switch K2, and the other end of the switch in relay K 1 is connected with the other end of heating circuit 101.From Figure 1A, can find out, as long as the first trigger switch 3 of series connection and any one in the second trigger switch K2 are in off-state, heating circuit 101 will disconnect, therefore, at pot cover 2 and pot body 1 not during the state in complete closure, any one in the first trigger switch 3 and the second trigger switch K2 during as folding lid sense switch in off-state, heating circuit 101 disconnects, heating plate 1011 in heating circuit 101 is in off-position, fundamentally make pressure cooking appliance to work, guarantee the culinary art safety of pressure cooking appliance.It should be noted that, pot cover 2 and pot the body 1 not state in complete closure can refer to that it is that in the process of closing lid, pot cover 2 does not put in place with the complete closure of pot body 1 that pot cover 2 and pot body carry out in closed process.
As shown in Figure 1A, one end of the first switch detection circuit 102 is connected with the other end of the first trigger switch 3, the first switch detection circuit 102 is for detection of the switching signal of the first trigger switch 3, one end of second switch testing circuit 107 is connected with the other end of the second trigger switch K2, and second switch testing circuit 107 is for detection of the switching signal of the second trigger switch K2.
Wherein, any one in the first trigger switch 3 and the second trigger switch K2 all can be covered sense switch for folding.
According to an embodiment of the present utility model, as shown in Figure 1B, when the first trigger switch 3 is described folding lid sense switch, the second trigger switch K2 is pressure switch.And described folding lid sense switch can be normally closed switch or normal open switch.
According to an embodiment of the present utility model, when the first trigger switch 3 covers sense switch and is normally closed switch for folding, if pot cover 2 and pot body 1 be the state in complete closure not, the disconnection that is triggered of the first trigger switch 3, and the first switch detection circuit 102 is when the first trigger switch 3 is triggered disconnection, the switching signal of the first trigger switch cannot be detected, therefore can generate triggering signal, and triggering signal is sent to control circuit 104.
According to another embodiment of the present utility model, when the second trigger switch K2 is folding lid sense switch and during for normally closed switch, if pot cover 2 and pot body 1 be the state in complete closure not, the second trigger switch K2 disconnection that is triggered, and second switch testing circuit 107 is when the second trigger switch K2 is triggered disconnection, the switching signal of the second trigger switch cannot be detected, therefore can generate triggering signal, and triggering signal is sent to control circuit 104.
According to another embodiment of the present utility model, when the first trigger switch 3 covers sense switch and is normal open switch for folding, if pot cover 2 and pot body 1 be the state in complete closure not, the first trigger switch 3 is not triggered and in off-state, and the first switch detection circuit 102 is not when the first trigger switch 3 is triggered disconnection, the switching signal of the first trigger switch cannot be detected, therefore can generate a switching signal, and this switching signal is sent to control circuit 104.
According to another embodiment of the present utility model, when the second trigger switch K2 is folding lid sense switch and during for normal open switch, if pot cover 2 and pot body 1 be the state in complete closure not, the second trigger switch K2 is not triggered and in off-state, and second switch testing circuit 107 is not when the second trigger switch K2 is triggered disconnection, the switching signal of the second trigger switch cannot be detected, therefore can generate a switching signal, and this switching signal is sent to control circuit 104.
In embodiment of the present utility model, pot cover 2 and pot the body 1 not state in complete closure are that closing lid is when not in place, folding lid sense switch is in off-state, and pot cover 2 and the state of pot body 1 in complete closure are closing lid while putting in place, and folding lid sense switch is in closure state.Also have a kind of situation to be, pot cover 2 and pot the body 1 not state in complete closure are that closing lid is when not in place, folding lid sense switch is in off-state, pot cover 2 and the state of pot body 1 in complete closure are that closing lid puts in place or pot cover does not carry out closing lid not during closing lid with pot body, and folding lid sense switch is in closure state.
In sum, when the first trigger switch is described folding lid sense switch, the second trigger switch is pressure switch, or when the second trigger switch is described folding lid sense switch, the first trigger switch is pressure switch, therefore, the position of two trigger switches can exchange.
As shown in Figure 1A, control circuit 104 respectively with the other end of the first switch detection circuit 102, the control coil in the other end of second switch testing circuit 107, relay K 1 be connected with folding lid indicator 103, described in described pot cover and described pot body are not during the state in complete closure, control circuit is controlled described folding lid indicator according to the switching signal of the switching signal of described the first trigger switch or described the second trigger switch and is sent alarm, notify in time the incomplete closure of user's pot cover 2 and pot body 1 to put in place, bring convenience to user's use.
In embodiment of the present utility model, described the first switch detection circuit or described second switch testing circuit are any one in voltage detecting circuit, zero cross detection circuit or optocoupler testing circuit, as long as can detect the switching signal of corresponding trigger switch.
Particularly, as shown in Figure 1B, the first switch detection circuit 102 can be zero cross detection circuit, zero cross detection circuit is not only for detection of the first trigger switch switching signal of normally closed switch 3 for example, also for detection of the zero cross signal of alternating current, and zero cross detection circuit 102 the first trigger switch for example normally closed switch 3 be triggered while disconnecting, the switching signal of the first trigger switch cannot be detected, also zero cross signal cannot be detected simultaneously, therefore can generate triggering signal, and triggering signal is sent to control circuit 104.
According to an embodiment of the present utility model, as shown in Figure 1B, folding lid indicator 103 can comprise folding lid indicator lamp 1031 and auditory tone cues assembly 1032, when at pot cover 2, closure does not put in place completely with pot body 1 like this, folding lid indicator lamp 1031 and auditory tone cues assembly 1032 issue out acousto-optic hint in the control of control circuit 104, clearly reminding user.Or in other embodiment of the present utility model, folding lid indicator 103 can only include in folding lid indicator lamp 1031 and auditory tone cues assembly 1032, only carries out auditory tone cues or light prompt.
In embodiment of the present utility model, when the first trigger switch 3 covers sense switch and is normally closed switch for folding, this folding lid sense switch can be microswitch.Particularly, when pressure cooking appliance is electric pressure cooking saucepan, below with reference to Fig. 2 to Figure 14, describe according to the electric pressure cooking saucepan 100 of the utility model embodiment and microswitch 3.
According to the electric pressure cooking saucepan 100 of the utility model embodiment, comprise pot body 1, pot cover 2 and microswitch 3.
Wherein, as shown in Figures 2 to 4, pot cover 2 is rotatably located on pot body 1 to open or close pot body 1.For example, on pot cover 2, can be provided with a pot tooth, pot can be provided with flange on body 1, at pot cover 2, is buckled on pot body 1 and when relatively a pot body 1 rotate, can realize coordinating of pot tooth and flange, thereby the object of pot body 1 is sealed or opened in realization.
As shown in Figure 2, microswitch 3 is located in pot body 1 and has push rod 70, and this push rod 70 can be special-shaped push rod, i.e. non-straight-bar push rod, and this abnormity push rod can prevent that water from flowing in microswitch 3.Further, microswitch 3 also can be provided with retaining section 74, and due to the barrier effect of retaining section 74, current can not flow into installing hole 11 along the periphery wall of push rod 70 and enter in microswitch 3, have guaranteed the safety in utilization of microswitch 3.
Wherein pot cover 2 coordinates with push rod 70 and for driving push rod 70 to move up and down between primary importance and the second place, so that microswitch 3 is in off-state or closure state.Specifically, when push rod 70 is positioned at primary importance, while that is to say push rod 70 by pot cover 2 pushing downwards, microswitch 3 is in off-state, and heating circuit 101 disconnects like this, can judge that now pot cover 2 is completely not closed with pot body 1.When push rod 70 is positioned at the second place, namely push rod 70 is not subject to the pushing of pot cover 2 and for example, while popping up (pot cover is opened to uncap completely with the pot complete closure of body or pot cover and boiled), now microswitch 3 is in closure state, heating circuit is normally closed like this, and now electric pressure cooking saucepan 100 can normally be worked.Need to illustrate a bit, " push rod 70 is not subject to the pushing of pot cover 2 " here comprises two kinds of situations, and wherein a kind of is the situation that pot cover 2 is taken away from pot body 1, and when another kind of situation is pot cover 2 and pot body 1 complete closure, pot cover 2 does not push push rod 70 yet.
When pot cover 2 is opened completely with pot body 1, namely pot cover 2 is when pot body 1 is taken away, push rod 70 is positioned at the second place, now microswitch 3 is in closure state, heating circuit is normally closed like this, now electric pressure cooking saucepan 100 can normally be worked, and has so just realized the function that electric pressure cooking saucepan 100 is uncapped and boiled, and practicality is good.
According to the electric pressure cooking saucepan 100 of the utility model embodiment, by microswitch 3 is set, can realize when not covering pot cover 2, pot body 1 electric pressure cooking saucepan 100 when open mode still can normally carry out culinary art work, realize the function that electric pressure cooking saucepan 100 is uncapped and boiled, greatly improved the practicality of electric pressure cooking saucepan 100.
According to an embodiment of the present utility model, as shown in Figure 2, pot body 1 comprises shell 12, interior pot 13 and jacket 14.
As shown in Figure 2, wherein interior pot 13 is located in shell 12, and interior pot 13 is for holding cooking food.
Between shell 12 and interior pot 13, be limited with container cavity, jacket 14 is set in outside and the sealing container cavity of interior pot 13, wherein microswitch 3 is located in container cavity, can make like this electric pressure cooking saucepan 100 more attractive in appearance and can avoid foreign matter to enter container cavity, damage microswitch 3, the security and the service life that have strengthened electric pressure cooking saucepan 100.
The upper end of push rod 70 extends upward through jacket 14, so that and pot cover 2 cooperations.Be understandable that, on jacket 14, can be formed with the structure that allows the upper end of push rod 70 pass, for example, as shown in Figure 6, on jacket 14, be formed with the through hole 143 with push rod 70 upper end adaptations.
As shown in Figure 5, the bottom of pot cover 2 is provided with the boss 21 that is suitable for pushing against push rod 70.Boss 21 is from the bottom of pot cover 2 to downward-extension.When closing pot body 1, first pot cover 2 is placed on pot body 1 like this, now boss 21 is positioned at the top of push rod 70 and pushes push rod 70 downwards, so that microswitch 3 is in off-state, electric pressure cooking saucepan 100 power-off are not worked.
When rotation pot cover 2 is to during screwing closed position, when pot cover 2 is completely closed with pot body 1, boss 21 will depart from push rod 70, make under the elastic force effect of the elastic component 80 that push rod 70 will mention below, be moved upward to the second place, now microswitch 3 is in closure state, heating circuit normally closed like this, and now electric pressure cooking saucepan 100 can normally be worked.
Wherein, if pot cover 2 is completely not closed with pot body 1, push rod 70 is positioned at primary importance, that is to say that push rod 70 is pushed by pot cover 2 downwards, and microswitch 3 is in off-state, and heating circuit 101 disconnects like this, and electric pressure cooking saucepan 100 power-off are not worked.
As shown in Figure 7, on microswitch 3, there is pilot hole 31, and as shown in Figure 3 and Figure 6, on the bottom surface of jacket 14, be provided with the double-screw bolt 141 to downward-extension, so that for example screw or bolt are fastened on microswitch 3 on double-screw bolt 141 through this pilot hole 31 by securing member 142.
According to Fig. 7 to Figure 14, at length introduce the microswitch 3 in the utility model embodiment below.
As shown in Fig. 7 to Figure 14, according to the microswitch 3 of the utility model embodiment, comprise: fore shell 10, back cover 20, securing supports 30, active supporting piece 40, stator 50, moving plate 60, push rod 70 and elastic component 80.
Particularly, be formed with installing hole 11 on fore shell 10, back cover 20 is connected with fore shell 10.Securing supports 30 is arranged on fore shell 10, and active supporting piece 40 can be connected with securing supports 30 up or down.Stator 50 is arranged on fore shell 10, and stator 50 is provided with the first contact 51.The moving plate first end 61 of moving plate 60 is connected with active supporting piece 40, and moving plate second end 62 of moving plate 60 extends to stator 50 belows through securing supports 30, and moving plate second end 62 of moving plate 60 is provided with the second contact 63 coordinating with the first contact 51.
Push rod 70 is located in installing hole 11, and the lower end of push rod 70 is connected with active supporting piece 40, elastic component 80 is located between push rod 70 and active supporting piece 40, and the first end of elastic component 80 is connected with the lower end of push rod 70, and the second end of elastic component 80 is connected with active supporting piece 40.
Wherein, between the second end 62 of securing supports 30 and moving plate 60, spring leaf 90 is also installed.
When microswitch 3 remains static, elastic component 80 is in relaxed state, and the second contact 63 of moving plate 60 contacts with the first contact 51 of stator 50.When push rod 70 is during stressed moving down, first push rod 70 pushes elastic component 80 and applies certain active force downwards, elastic component 80 by force transmission to active supporting piece 40, Compressive activities support member 40 moves down, and drive moving plate 60 to move down, thereby make the second contact 63 on moving plate 60 separated with the first contact 51 of stator 50, microswitch 3 produces action.Now, push rod 70 can continue to move down, until elastic component 80 is extruded into maximum displacement.
Thus, according to the microswitch 3 of the utility model embodiment, by elastic component 80 being set between push rod 70 and active supporting piece 40, elastic component 80 has certain cushioning effect, at push rod 70 extruding elastic components 80 and after reaching microswitch 3 actions, push rod 70 still can continue mobile, thereby push rod 70 can obtain larger displacement, there is larger activity space, increased the scope of application of microswitch 3.
Selection about elastic component 80 is not particularly limited, and can adopt the conventional technological means of those of ordinary skills.According to an embodiment of the present utility model, elastic component 80 is spring.Thus, spring structure is simple, and wide material sources, and good springiness are with low cost.
The environment for use of considering microswitch 3 has more steam conventionally; for fear of the steam producing, from push rod 70 upper reaches, enter in microswitch; as shown in Figure 8 and Figure 9; according to an embodiment of the present utility model; push rod 70 forms column; on the outer peripheral face of push rod 70, be formed with retaining section 74, the area of the orthographic projection of retaining section 74 on fore shell 10 is greater than the area of installing hole 11.Thus, have current lower times on push rod 70, due to the barrier effect of retaining section 74, current can not flow into installing hole 11 and enter in microswitch 3 along the periphery wall of push rod 70, have guaranteed the safety in utilization of microswitch 3.
Particularly, about the shape of retaining section 74, be not particularly limited, as long as meet the openings of sizes that its size is greater than installing hole 11.Alternatively, as shown in Figure 8, according to an embodiment of the present utility model, retaining section 74 forms square baffle plate.
Further, as shown in figure 10, according to an embodiment of the present utility model, microswitch 3 also comprises: silica gel sheath 75, silica gel sheath 75 is set on push rod 70, silica gel sheath 75 between retaining section 74 and installing hole 11 and the lower end of silica gel sheath 75 be only against on the upper surface of fore shell 10.Thus, by silica gel sheath 75 being set between retaining section 74 and installing hole 11, water on push rod 70 can be flow to the upper surface of fore shell 10 from the surface of silica gel sheath 75, and can not enter in installing hole 11, and the lower end of silica gel sheath 75 is connected on the upper surface of fore shell 10, blocked installing hole 11 and extraneous being communicated with, can effectively prevent that steam or current from entering in microswitch 3, further promoted the safety in utilization of microswitch 3.
It should be noted that, the shape of push rod 70 can rationally regulate according to the environment for use of microswitch 3, and preferably, according to an embodiment of the present utility model, as shown in Figure 11 to 14, push rod 70 is special-shaped bar.Thus, the push rod 70 of special-shaped bar structure can coordinate with various structures, is applicable to various non-coaxial, non-isoplanar assembly relations, and can increase to a certain extent the activity space of microswitch 3.
Alternatively, as shown in Figure 11 and Figure 12, according to an embodiment of the present utility model, push rod 70 comprises: pushing part 71, connecting portion 72 and diversion portion 73.
Particularly, pushing part 71 is arranged in installing hole 11, and the lower end 711 of pushing part 71 is connected with elastic component 80.The first end 721 of connecting portion 72 is connected with pushing part 71, diversion portion 73 is connected with the second end 722 of connecting portion 72, and the upper surface of the first end 721 of connecting portion 72 is more than or equal to the upper surface of the second end 722 with respect to the height of pushing part 71 with respect to the height of pushing part 71.In other words, pushing part 71 and diversion portion 73 in the vertical directions are arranged spaced apart, the upper surface of the second end 722 being connected with diversion portion 73 is less than or equal to the upper surface of the first end 721 being connected with pushing part 71 with respect to the height of pushing part 71 with respect to the height of pushing part 71, that is to say the upper surface that the upper surface of first end 721 height is in the horizontal direction more than or equal to the second end 722 height in the horizontal direction.Thus, on push rod 70, there are current through out-of-date, under the cooperation of diversion portion 73 and connecting portion 72, because the upper surface of the first end 721 of connecting portion 72 is higher or contour with respect to the position of the upper surface of the second end 722, when the external world has current through diversion portion 73, the second end 722 that can be not lower from the relative position of connecting portion 72 flows to the higher or contour first end of relative position 721, thereby avoids current to flow to microswitch 3 inside, has improved the safety in utilization of microswitch 3.
Shape about connecting portion 72 is not particularly limited, as long as can realize above-mentioned technique effect.Alternatively, as shown in Figure 8, according to an embodiment of the present utility model, connecting portion 72 forms straight-bar, and connecting portion 72 is connected with diversion portion 73 is vertical with pushing part 71 respectively.Further, the second end 722 of connecting portion 72 is connected with the lower end of diversion portion 73, and the first end 721 of connecting portion 72 is connected with the upper end of pushing part 71.Thus, this connecting portion 72 is simple in structure, prepares material few, cheap.
According to an embodiment of the present utility model, as shown in figure 12, connecting portion 72a forms bow, and the second end 721a of connecting portion 72a is connected with diversion portion 73, and the second end 722a of connecting portion 72a is connected with pushing part 71.Preferably, the height of the upper end of diversion portion 73 is greater than the height of the upper end of pushing part 71, and the lower end of diversion portion 73 flushes with the lower end of pushing part 71.Further, the height of the first end 721a of connecting portion 72a is greater than the height of the second end 722a.Thus, the connecting portion 72a of this structure can drain into the current in diversion portion 73 end of diversion portion 73 better, has guaranteed the waterproof effect of microswitch 3.
Consider preparation cost problem, according to an embodiment of the present utility model, pushing part 71, connecting portion 72 and diversion portion 73 are integrally formed.Thus, the structure being integrally formed not only can guarantee the overall structure stability of push rod 70, and can reduce preparation difficulty, controls preparation cost.
Can also be as shown in Figure 13 and Figure 14 according to the special-shaped pusher structure of the microswitch 3 of the utility model embodiment, the microswitch 3 of this structure can be adaptive with multiple other structures, expand the scope of application of microswitch 3, and can play waterproof action equally.
More than to make microswitch 3 in off-state or closure state to the structure of microswitch 3 and with pot body 1, pot cover 2 associated action, wherein, be understandable that, microswitch 3 is in normally off, only completely not closed at pot cover 2 and pot body 1, push rod 70 is positioned at primary importance, that is to say that push rod 70 is pushed by pot cover 2 downwards, and microswitch 3 is just in off-state.
According to an embodiment of the present utility model, as shown in Figure 1B, when the first switch detection circuit is zero cross detection circuit, between zero cross detection circuit and the first trigger switch, be also connected with the first bleeder circuit 105, say, above-mentioned pressure cooking appliance also comprises that the first bleeder circuit 105, the first bleeder circuits 105 are connected between the other end and the first switch detection circuit 102 that the first trigger switch is microswitch 3.Wherein, the first bleeder circuit 105 comprises the first resistance R 1 and second resistance R 2 of series connection.
Further, as shown in Figure 1B, above-mentioned pressure cooking appliance also comprises the second bleeder circuit 106, one end of the second bleeder circuit 106 by pressure switch K2 and the first trigger switch for example the other end of normally closed switch 3 be connected, second switch testing circuit for example one end of voltage detecting circuit 107 is connected with the other end of the second bleeder circuit 106, the second switch testing circuit for example other end of voltage detecting circuit 107 is connected with control circuit 104, second switch testing circuit for example voltage detecting circuit 107 for detection of the voltage swing of alternating current, control circuit 104 comes the heating power of controlled pressure cooking apparatus to cook the stability of heating to guarantee pressure cooking appliance according to the voltage swing of alternating current, also for detection of the switching signal of pressure switch K2.Wherein, the second bleeder circuit 106 is also comprised of the resistance of two series connection, second switch testing circuit for example voltage detecting circuit 107 physical circuit as shown in figure 15.
Particularly, as shown in Figure 1B, heating circuit 101 comprises heating plate 1011, one end by Thermal Cutoffs and alternating current, one end of heating plate 1011 for example zero line N is connected, the other end of heating plate 1011 is connected with one end of switch in relay K 1, the other end of the switch in relay K 1 by pressure switch K2 and the first trigger switch for example the other end of normally closed switch 3 be connected, and control circuit 104 comprises: the first diode D1, voltage-stabiliser tube ZD1, the first triode Q1, the 3rd resistance R 3 and control chip 1041.
Wherein, one end of the negative electrode of the first diode D1 and control coil in relay K 1 and the first predeterminated voltage for example the power supply of 12V be connected respectively, the anode of voltage-stabiliser tube ZD1 is connected with the anode of the first diode D1, and the negative electrode of voltage-stabiliser tube ZD1 is connected with the other end of control coil in relay K 1, the colelctor electrode of the first triode Q1 is connected with the other end of control coil in relay K 1, the grounded emitter of the first triode Q1, the 3rd resistance R 3 is connected between the base stage and emitter stage of the first triode Q1, the heating control end HBOT of control chip 1041 is connected with the base stage of the first triode Q1, the first switching signal test side of control chip 1041 (for example zero passage detection end ZERO) for example, is connected with the first switch detection circuit 102 (zero cross detection circuit), the second switch signal detection end of control chip 1041 (for example voltage detecting end POW) for example, is connected with second switch testing circuit 107 (voltage detecting circuit), the folding lid indication control end of control chip 1041 is auditory tone cues control end BUZZ1 for example, BUZZ2 is connected with the auditory tone cues assembly 1032 in folding lid indicator 103, and the folding of control chip 1041 lid indication control end for example light prompt control end SEG be connected with folding lid indicator lamp 1031.In addition, the temperature sampling end AD_TBOT of control chip 1041 is also connected with temperature sensor 110 by temperature sensing circuit 109.According to an embodiment of the present utility model, folding lid indicator lamp 1031 can show by liquid crystal numberal tube.
And, according to an embodiment of the present utility model, as shown in figure 16, auditory tone cues assembly 1032 comprises loudspeaker BUZ and drives the driver element 10321 of loudspeaker BUZ, and driver element 10321 drives the loudspeaker BUZ alarm of sounding according to the control signal of control chip 1041.
Particularly, as shown in figure 17, the first switch detection circuit for example zero cross detection circuit 102 comprises: the second diode D2, the second triode Q2, the 4th resistance R 4, the first capacitor C 1, the 5th resistance R 5, the 6th resistance R 6 and the second capacitor C 2.
Wherein, the negative electrode of the second diode D2 is connected with the first bleeder circuit 105, the base stage of the second triode Q2 is connected with the anode of the second diode D2, the emitter stage of the second triode Q2 and the second predeterminated voltage for example power supply of 5V are connected, the 4th resistance R 4 is connected between the base stage and emitter stage of the second triode Q2, one end of the first capacitor C 1 is connected with the base stage of the second triode Q2, the other end ground connection of the first capacitor C 1, one end of the 5th resistance R 5 is connected with the colelctor electrode of the second triode Q2, the other end ground connection of the 5th resistance R 5, one end of the 6th resistance R 6 is connected with the colelctor electrode of the second triode Q2, the other end of the 6th resistance R 6 is connected with the zero passage detection end ZERO that control circuit 104 is the control chip in control circuit, one end of the second capacitor C 2 is connected with the other end of the 6th resistance R 6, the other end ground connection of the second capacitor C 2.
In embodiment of the present utility model, as shown in Figure 1A or Figure 1B, above-mentioned pressure cooking appliance also comprises low-voltage power supply circuit 108, low-voltage power supply circuit 108 is connected described alternating current to be converted to for example power supply of 12V and the second predeterminated voltage power supply of 5V for example of the first predeterminated voltage with alternating current, wherein, described the first predeterminated voltage is greater than described the second predeterminated voltage, the power supply of 12V can be relay K 1 power supply, and the power supply of 5V can be the driver element power supply of control chip, zero cross detection circuit, voltage detecting circuit, loudspeaker.
In sum, the pressure cooking appliance of the utility model embodiment for example electric pressure cooking saucepan 100 (especially boils from uncapping the process that closing lid boils) if when pot cover 2 is completely closed with pot body 1 in pot cover 2 and pot body 1 carry out process that closure is closing lid, the the first trigger switch for example push rod 70 in microswitch 3 is subject to the pushing of pot cover 2, make microswitch 3 in off-state, heating circuit 101 disconnects like this, heating plate 1011 power-off in heating circuit 101 can not heated, simultaneously thereby the first switch detection circuit zero cross signal that for example zero cross detection circuit 102 can't detect alternating current can be exported triggering signal to the control chip 1041 in control circuit 104, control chip 1041 is controlled foldings lid indicator lamps 1031 and is lighted and/or control auditory tone cues assembly 1032 alarm of sounding, facilitate user to know that in time pot cover 2 and pot body 1 are completely not closed, not only to user, bring convenience, also guarantee culinary art safety.
According to the pressure cooking appliance of the utility model embodiment, the first trigger switch and second trigger switch of series connection are set by the other end of the alternating current in input, whether not one in the first trigger switch and the second trigger switch in order to detect pot cover and the pot body state in complete closure, and at pot cover with pot body not during the state in complete closure, one in the first trigger switch and the second trigger switch in off-state, heating circuit also disconnects like this, and, pot cover and pot body not during the state in complete closure control circuit according to the switching signal of the switching signal of the first trigger switch or the second trigger switch, control folding lid indicator and send alarm, prompting user pot cover is completely not closed with pot body, when bringing convenience to user, guarantee culinary art safety.
In the description of this description, the description of reference term " embodiment ", " some embodiment ", " example ", " concrete example " or " some examples " etc. means to be contained at least one embodiment of the present utility model or example in conjunction with specific features, structure, material or the feature of this embodiment or example description.In this manual, the schematic statement of above-mentioned term is not necessarily referred to identical embodiment or example.And the specific features of description, structure, material or feature can be with suitable mode combinations in any one or more embodiment or example.
Although illustrated and described embodiment of the present utility model, for the ordinary skill in the art, be appreciated that in the situation that not departing from principle of the present utility model and spirit and can carry out multiple variation, modification, replacement and modification to these embodiment, scope of the present utility model is by claims and be equal to and limit.
Claims (11)
1. a pressure cooking appliance, is characterized in that, comprising:
Pot body;
Pot cover;
Heating circuit, one end of described heating circuit is connected with one end of the alternating current of input;
The first trigger switch and second trigger switch of series connection, one end of described the first trigger switch is connected with the other end of described alternating current, and the other end of described the first trigger switch is connected with one end of described the second trigger switch;
Relay, one end of the switch in described relay is connected with the other end of described the second trigger switch, and the other end of the switch in described relay is connected with the other end of described heating circuit;
Detect the first switch detection circuit of the switching signal of described the first trigger switch, one end of described the first switch detection circuit is connected with the other end of described the first trigger switch;
Detect the second switch testing circuit of the switching signal of described the second trigger switch, one end of described second switch testing circuit is connected with the other end of described the second trigger switch;
Folding lid indicator; And
Control circuit, described control circuit respectively with the other end of described the first switch detection circuit, the control coil in the other end of described second switch testing circuit, described relay is connected with described folding lid indicator, described in described pot cover and described pot of body are not during the state in complete closure, control circuit is controlled described folding according to the switching signal of the switching signal of described the first trigger switch or described the second trigger switch and is covered indicator and send alarm.
2. pressure cooking appliance as claimed in claim 1, is characterized in that, any one in described the first trigger switch and described the second trigger switch is folding lid sense switch.
3. pressure cooking appliance as claimed in claim 2, is characterized in that, when described the first trigger switch is described folding lid sense switch, described the second trigger switch is pressure switch.
4. pressure cooking appliance as claimed in claim 3, is characterized in that, described folding lid sense switch is normally closed switch or normal open switch.
5. pressure cooking appliance as claimed in claim 1, is characterized in that, described folding lid indicator comprises folding lid indicator lamp and/or auditory tone cues assembly.
6. pressure cooking appliance as claimed in claim 4, is characterized in that, when described folding lid sense switch is described normally closed switch, described folding lid sense switch is microswitch.
7. pressure cooking appliance as claimed in claim 1, is characterized in that, described the first switch detection circuit or described second switch testing circuit are any one in voltage detecting circuit, zero cross detection circuit or optocoupler testing circuit.
8. pressure cooking appliance as claimed in claim 7, it is characterized in that, when described the first switch detection circuit is described zero cross detection circuit, between described zero cross detection circuit and described the first trigger switch, be also connected with the first bleeder circuit, described the first bleeder circuit comprises the first resistance and second resistance of series connection, and described zero cross detection circuit specifically comprises:
The second diode, the negative electrode of described the second diode is connected with described the first bleeder circuit;
The second triode, the base stage of described the second triode is connected with the anode of described the second diode, and the emitter stage of described the second triode is connected with the power supply of the second predeterminated voltage;
The 4th resistance, described the 4th resistance is connected between the base stage and emitter stage of described the second triode;
The first electric capacity, one end of described the first electric capacity is connected with the base stage of described the second triode, the other end ground connection of described the first electric capacity;
The 5th resistance, one end of described the 5th resistance is connected with the colelctor electrode of described the second triode, the other end ground connection of described the 5th resistance;
The 6th resistance, one end of described the 6th resistance is connected with the colelctor electrode of described the second triode, and the other end of described the 6th resistance is connected with described control circuit;
The second electric capacity, one end of described the second electric capacity is connected with the other end of described the 6th resistance, the other end ground connection of described the second electric capacity.
9. pressure cooking appliance as claimed in claim 1, it is characterized in that, described heating circuit comprises heating plate, and one end of described heating plate is connected with one end of described alternating current, the other end of described heating plate is connected with one end of switch in described relay, and described control circuit comprises:
The first diode, the negative electrode of described the first diode is connected respectively with the power supply of the first predeterminated voltage with one end of control coil in described relay;
Voltage-stabiliser tube, the anode of described voltage-stabiliser tube is connected with the anode of described the first diode, and the negative electrode of described voltage-stabiliser tube is connected with the other end of control coil in described relay;
The first triode, the colelctor electrode of described the first triode is connected with the other end of control coil in described relay, the grounded emitter of described the first triode;
The 3rd resistance, described the 3rd resistance is connected between the base stage and emitter stage of described the first triode;
Control chip, the heating control end of described control chip is connected with the base stage of described the first triode, the first switching signal test side of described control chip is connected with described the first switch detection circuit, the second switch signal detection end of described control chip is connected with described second switch testing circuit, and the folding lid indication control end of described control chip is connected with described folding lid indicator.
10. pressure cooking appliance as claimed in claim 5, is characterized in that, described auditory tone cues assembly comprises loudspeaker and drives the driver element of described loudspeaker.
11. pressure cooking appliances as described in any one in claim 1-10, it is characterized in that, also comprise low-voltage power supply circuit, described low-voltage power supply circuit is connected described alternating current to be converted to the power supply of the first predeterminated voltage and the power supply of the second predeterminated voltage with described alternating current, wherein, described the first predeterminated voltage is greater than described the second predeterminated voltage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420283889.4U CN203953289U (en) | 2014-05-29 | 2014-05-29 | Pressure cooking appliance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420283889.4U CN203953289U (en) | 2014-05-29 | 2014-05-29 | Pressure cooking appliance |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203953289U true CN203953289U (en) | 2014-11-26 |
Family
ID=51913935
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420283889.4U Withdrawn - After Issue CN203953289U (en) | 2014-05-29 | 2014-05-29 | Pressure cooking appliance |
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| Country | Link |
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| CN (1) | CN203953289U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105030053A (en) * | 2015-08-19 | 2015-11-11 | 浙江绍兴苏泊尔生活电器有限公司 | Control method and device of pressure cooker and pressure cooker |
| CN105193244A (en) * | 2014-05-29 | 2015-12-30 | 佛山市顺德区美的电热电器制造有限公司 | Pressure cooking utensil |
| CN106292784A (en) * | 2015-05-12 | 2017-01-04 | 珠海格力电器股份有限公司 | Electric heating equipment and control method thereof and device |
| CN114794853A (en) * | 2021-01-18 | 2022-07-29 | 杭州九阳小家电有限公司 | Safe pressure cooking appliance |
-
2014
- 2014-05-29 CN CN201420283889.4U patent/CN203953289U/en not_active Withdrawn - After Issue
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105193244A (en) * | 2014-05-29 | 2015-12-30 | 佛山市顺德区美的电热电器制造有限公司 | Pressure cooking utensil |
| CN105193244B (en) * | 2014-05-29 | 2017-10-27 | 佛山市顺德区美的电热电器制造有限公司 | Pressure cooking appliance |
| CN106292784A (en) * | 2015-05-12 | 2017-01-04 | 珠海格力电器股份有限公司 | Electric heating equipment and control method thereof and device |
| CN105030053A (en) * | 2015-08-19 | 2015-11-11 | 浙江绍兴苏泊尔生活电器有限公司 | Control method and device of pressure cooker and pressure cooker |
| CN114794853A (en) * | 2021-01-18 | 2022-07-29 | 杭州九阳小家电有限公司 | Safe pressure cooking appliance |
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| C14 | Grant of patent or utility model | ||
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| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20141126 Effective date of abandoning: 20171027 |