CN203244277U - Water dispenser heating control and display circuit - Google Patents
Water dispenser heating control and display circuit Download PDFInfo
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- CN203244277U CN203244277U CN 201320142771 CN201320142771U CN203244277U CN 203244277 U CN203244277 U CN 203244277U CN 201320142771 CN201320142771 CN 201320142771 CN 201320142771 U CN201320142771 U CN 201320142771U CN 203244277 U CN203244277 U CN 203244277U
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Abstract
The utility model discloses a water dispenser heating control and display circuit which comprises a first wiring terminal, a temperature controller, an electric heating element, an overheat protector, a second wiring terminal, a heat preservation indicating electric light-emitting element, a heating indicating electric light-emitting element, a first diode, an overheat indicating electric light-emitting element, a second diode and a first voltage reducing or current limiting element. The first wiring terminal, the temperature controller, the electric heating element, the overheat protector and the second wiring terminal are sequentially connected in series. The heat preservation indicating electric light-emitting element is connected with the temperature controller in parallel. The heating indicating electric light-emitting element is connected with the electric heating element in parallel. The first diode, the overheat indicating electric light-emitting element and the second diode are connected in series and then connected with the overheat protector in parallel. One end of the first voltage reducing or current limiting element is electrically connected with the first wiring terminal and the other end of the first voltage reducing or current limiting element is electrically connected with the end, close to the overheat indicating electric light-emitting element, of the first diode. According to the water dispenser heating control and display circuit, the three working conditions of heating, heat preservation and overheat of a water dispenser can be indicated in a simple and effective mode through the corresponding electric light-emitting elements.
Description
Technical field
The utility model relates to a kind of drinking machine heating control and display circuit.
Background technology
Water dispenser has been very common household products; the heating control circuit technical scheme of using at present as shown in Figure 1; basically all be to connect respectively a temperature controller 2 and an overheat protector 4 at the two ends of electrical heating elements 3, join with municipal power supply by the first terminals 1 and the second terminals 5 respectively again.Wherein temperature controller 2 adopts the button-shaped temperature controller that automatically resets mostly; overheat protector 4 adopts button-shaped temperature controller with manual reset mostly; the municipal administration power supply is the alternating current (the municipal power supply of other country may adopt the 110V60Hz alternating current) of 220V 50Hz, and temperature controller 2 and overheat protector 4 all are installed on the hot tank.When temperature in the tank rose to the temperature that temperature controller 2 sets, temperature controller 2 will tripping, cut off the power supply stopped heating of electrical heating elements 3; If temperature controller 2 is malfunctioning; when then temperature rises to the temperature of temperature controller 2 settings in tank; electrical heating elements 3 still can continue heating; cause temperature continuation rising in the tank; when temperature in the tank rises to the temperature of overheat protector 4 settings; overheat protector 4 will tripping, cuts off the power supply stopped heating of electrical heating elements 3, thereby prevents fire.
When needs showed heated condition, just electroluminescent element 7 was indicated in a heating in parallel at the two ends of electrical heating elements 3; In order to protect heating indication electroluminescent element 7, usually also indicate branch road series connection step-down or the current limiting element A of electroluminescent element 7 in heating; When heating indication electroluminescent element 7 adopts light emitting diode, for preventing the light emitting diode reverse breakdown, also on this branch road, be connected in series again a diode B; Wherein step-down or current limiting element A adopt resistance usually, as shown in Figure 2.When electrical heating elements 3 normal adstante febres, heating indication electroluminescent element 7 is just thereupon simultaneously shinny, and prompting user electrical heating elements 3 is in heated condition.
When needs showed the state (being keeping warm mode) of temperature controller 2 trippings, just electroluminescent element 6 was indicated in an insulation in parallel at the two ends of temperature controller 2; In order to protect insulation indication electroluminescent element 6, usually also indicate branch road series connection step-down or the current limiting element C of electroluminescent element 6 in insulation; When insulation indication electroluminescent element 6 adopts light emitting diode, for preventing the light emitting diode reverse breakdown, also on this branch road, be connected in series again a diode D, step-down or current limiting element C adopt resistance usually, as shown in Figure 3.When electrical heating elements 3 normal adstante febres, heating indication electroluminescent element 7 is just thereupon simultaneously shinny, and prompting user electrical heating elements 3 is in heated condition; And insulation indication electroluminescent element 6, because temperature controller 2 does not have take-off, its two ends there is no voltage, so that the two ends of insulation indication electroluminescent element 6 do not have voltage yet, so can be not shinny.After temperature controller 2 take-offs, then electric current will be from the second terminals 5 overheat protector 4 of flowing through, the electrical heating elements 3 of flowing through again, step-down or current limiting element C, insulation indication electroluminescent element 6 and diode D more successively flow through, flow at last the first terminals 1, so that insulation indication electroluminescent element 6 has enough electric currents to flow through and shinny, prompting user is keeping warm mode at this moment; And the electrical heating elements 3 of flowing through only has very little electric current, again because the resistance of electrical heating elements 3 is very little, so pressure drop is very little on it.For heating indication electroluminescent element 7, because the impedance of step-down or current limiting element A is significantly greater than the impedance of electrical heating elements 3, the electric current of heating indication electroluminescent element 7 is too little and not enough so that it is shinny so that flow through, so heating indication this moment electroluminescent element 7 does not work.This scheme can show heating and be incubated two kinds of operating modes.
When needs show the state (be superheat state, be also referred to as guard mode) of overheat protector 4 trippings, just at the two ends of overheat protector 4 overheated indication electroluminescent element 9 in parallel; In order to protect overheated indication electroluminescent element 9, usually also at branch road series connection step-down or the current limiting element E of overheated indication electroluminescent element 9; When overheated indication electroluminescent element 9 adopts light emitting diode, for preventing the light emitting diode reverse breakdown, also on this branch road, be connected in series again a diode F, step-down or current limiting element E adopt resistance usually, as shown in Figure 4.When overheat protector 4 not during tripping, its two ends there is no voltage, so that the two ends of overheated indication electroluminescent element 9 do not have voltage yet, so can be not shinny.When not take-off and after overheat protector 4 take-offs of temperature controller 2, then electric current will be from the first terminals 1 temperature controller 2 of flowing through, flow through again electrical heating elements 3, then flow through successively step-down or current limiting element E, overheated indication electroluminescent element 9 and diode F, flow at last the second terminals 5, so that overheated indication electroluminescent element 9 has enough electric currents to flow through and shinny, prompting user is overheated or guard mode at this moment; And the electrical heating elements 3 of flowing through only has very little electric current, again because the resistance of electrical heating elements 3 is very little, so pressure drop is very little on it.For heating indication electroluminescent element 7, because the impedance of step-down or current limiting element A is significantly greater than the impedance of electrical heating elements 3, the electric current of heating indication electroluminescent element 7 is too little and not enough so that it is shinny so that flow through, so heating indication this moment electroluminescent element 7 does not work.This scheme can show heating and overheated two kinds of operating modes; but this circuit has a problem, is exactly at temperature controller 2 and overheat protector 4 all in the situation of take-off; then heating indication electroluminescent element 7 and overheated indication electroluminescent element 9 are not shinny, do not have effective suggesting effect.
Such scheme is the scheme that drinking machine heating is controlled and display circuit is commonly used on the market at present, if heating, insulation and overheated three kinds of operating modes will show that all then such scheme can not meet the demands.Perhaps the someone thinks: as long as the function of Fig. 2 and Fig. 3 merged to appropriately adjust again obtains Fig. 5, just can deal with problems.In fact so not simple, will understand as long as analyze: Fig. 5 is not a good design, is in-problem, the reasons are as follows:
Heating cycle: i.e. temperature controller 2 and overheat protector 4 all not take-offs, electrical heating elements 3 energising heating.At this moment the two ends of temperature controller 2 and overheat protector 4 all do not have voltage, so insulation indication electroluminescent element 6 and overheated indication electroluminescent element 9 all do not work, only have heating indication electroluminescent element 7 bright.
Insulation operating mode: i.e. temperature controller 2 take-offs and overheat protector 4 not take-offs; electric current flows to the second terminals 5 at last from the first terminals 1 flow through successively step-down or current limiting element C, insulation indication electroluminescent element 6, diode D, electrical heating elements 3, overheat protector 4.At this moment, voltage mainly falls on step-down or current limiting element C, and insulation indication electroluminescent element 6 is shinny, and heating indication electroluminescent element 7 and overheated indication electroluminescent element 9 all do not work.
Cross thermal condition 1: i.e. temperature controller 2 not take-offs and overheat protector 4 take-offs, electric current flows to the second terminals 5 at last from the first terminals 1 flow through successively temperature controller 2, electrical heating elements 3, step-down or current limiting element E, overheated indication electroluminescent element 9, diode F.At this moment, voltage mainly falls on step-down or current limiting element E, and overheated indication electroluminescent element 9 is shinny, and heating indication electroluminescent element 7 and insulation indication electroluminescent element 6 all do not work.
Cross thermal condition 2: i.e. temperature controller 2 and overheat protector 4 equal take-offs; electric current flows to the second terminals 5 at last from the first terminals 1 flow through successively step-down or current limiting element C, insulation indication electroluminescent element 6, diode D, electrical heating elements 3, step-down or current limiting element E, overheated indication electroluminescent element 9, diode F.At this moment, because step-down or current limiting element C and step-down or current limiting element E play very strong step-down or metering function simultaneously, cause the excessive restriction to the electric current of flow through insulation indication electroluminescent element 6 and overheated indication electroluminescent element 9, so that: insulation indication electroluminescent element 6 and overheated indication electroluminescent element 9 all may be not shinny, even shinny, the brightness of overheated indication electroluminescent element 9 when its brightness also can significantly be lower than thermal condition 1, impact is indication effectively; If the brightness that the step-down by reducing step-down or current limiting element C and step-down or current limiting element E or current limiting capacity improve overheated indication electroluminescent element 9, then when thermal condition 1 occurring, will cause step-down or the current limiting capacity of step-down or current limiting element E not enough, thereby so that the 9 excessive shinny life-spans that have a strong impact on overheated indication electroluminescent element 9 of overheated indication electroluminescent element; In addition, when superheating phenomenon occured, insulation indication electroluminescent element 6 and overheated indication electroluminescent element 9 were all shinny, also effectively indication of impact.
Therefore, the scheme of Fig. 5 neither a good design.
In sum, for a kind of drinking machine heating control and display circuit, if require heating, insulation and overheated three kinds of operating modes all will show with indicator lamp, also there is not good design at present.
The utility model content
Technical problem to be solved in the utility model provides a kind of a kind of drinking machine heating control and display circuit that can show drinking machine heating, insulation and overheated three kinds of operating modes.
In order to solve the problems of the technologies described above, technical scheme provided by the utility model is: a kind of drinking machine heating control and display circuit comprise the first terminals, temperature controller, electrical heating elements, overheat protector, the second terminals, insulation indication electroluminescent element, heating indication electroluminescent element, the first diode, overheated indication electroluminescent element, the second diode and the first step-down or current limiting element; Described the first terminals, temperature controller, electrical heating elements, overheat protector and the second terminals are connected successively; Described insulation indication electroluminescent element is in parallel with temperature controller; Described heating indication electroluminescent element is in parallel with electrical heating elements; In parallel with overheat protector after described the first diode, overheated indication electroluminescent element and the series connection of the second diode; One end of described the first step-down or current limiting element is electrically connected with the first terminals, and the other end is electrically connected with an end of the close overheated indication electroluminescent element of the first diode.
Described the first diode and the second diode reverse setting.
Described insulation indication electroluminescent element, heating indication electroluminescent element and overheated indication electroluminescent element are light emitting diode, and insulation indication electroluminescent element oppositely arranges, heats the indication electroluminescent element with heating indication electroluminescent element and overheated indication electroluminescent element arranges in the same way; Described the first diode and overheated indication electroluminescent element oppositely arrange; Described the second diode is connected with the negative electricity of overheated indication electroluminescent element.
A kind of drinking machine heating control and display circuit, also comprise being connected on the electric branch circuit of insulation indication electroluminescent element place and also just indicating electroluminescent element with insulation respectively, the second step-down or current limiting element and the 3rd diode that negative electricity connects, and be connected on the electric branch circuit of heating indication electroluminescent element place and respectively with heating indication electroluminescent element just, the 3rd step-down or current limiting element and the 4th diode that negative electricity connects, and be connected on the electric branch circuit of overheated indication electroluminescent element place and the 4th step-down or the current limiting element that are electrically connected with the positive pole of overheated indication electroluminescent element; Described the 3rd diode arranges in the same way with insulation indication electroluminescent element; Described the 4th diode arranges in the same way with heating indication electroluminescent element.
Described the first step-down or current limiting element, the second step-down or current limiting element, the 3rd step-down or current limiting element and the 4th step-down or current limiting element are resistive element.
The resistance of the resistance that described the first step-down or current limiting element, the second step-down or current limiting element and the 3rd step-down or current limiting element adopt is all got 50～120K Ω; The resistance of the resistance that described the 4th step-down or current limiting element adopt is 0.5～20K Ω.
After having adopted technique scheme, the utlity model has following beneficial effect: (1) the utility model can both concisely effectively indicate by corresponding electroluminescent element drinking machine heating, insulation and overheated three kinds of operating modes, that is: as long as electrical heating elements is in heated condition, then only have heating indication electroluminescent element luminous, other indication electroluminescent element is all not luminous; As long as the temperature controller take-off then only has insulation indication electroluminescent element luminous, other indication electroluminescent element is all not luminous; As long as the overheat protector take-off then only has overheated indication electroluminescent element luminous, other electric indication light element is all not luminous; And the luminous difference in brightness of the electroluminescent element under each operating mode can be accomplished very little, and naked eyes almost can not be differentiated for this difference.
(2) insulation indication electroluminescent element of the present utility model, heating indication electroluminescent element and overheated indication electroluminescent element are light emitting diode, and light emitting diode is with low cost, can effectively reduce manufacturing cost of the present utility model.
(3) the first step-down of the present utility model or current limiting element, the second step-down or current limiting element, the 3rd step-down or current limiting element and the 4th step-down or current limiting element are resistive element, resistive element is with low cost equally, therefore can further reduce manufacturing cost of the present utility model.
(4) resistance of the resistance that significantly adopts greater than the 4th step-down or current limiting element of the resistance of the resistance that adopts of the first step-down of the present utility model or current limiting element, this setting is so that the brightness of the brightness of overheated indication electroluminescent element when luminous when will be basically luminous with heating indication electroluminescent element or insulation indication electroluminescent element is identical.
Description of drawings
Content of the present utility model is easier to be expressly understood in order to make, and the below is described in further detail the utility model, wherein according to specific embodiment also by reference to the accompanying drawings
Fig. 1 is the structural representation of the first prior art.
Fig. 2 is the structural representation of the second prior art.
Fig. 3 is the structural representation of the third prior art.
Fig. 4 is the structural representation of the 4th kind of prior art.
Fig. 5 is the structural representation of the 5th kind of prior art.
Fig. 6 is the structural representation of embodiment 1 of the present utility model.
Fig. 7 is the structural representation of embodiment 2 of the present utility model.
Fig. 8 is the structural representation of embodiment 3 of the present utility model.
Fig. 9 is the structural representation of embodiment 4 of the present utility model.
Figure 10 is the structural representation of embodiment 5 of the present utility model.
Figure 11 is the structural representation of embodiment 6 of the present utility model.
Label in the accompanying drawing is:
Step-down or current limiting element A, diode B, step-down or current limiting element C, diode D, step-down or current limiting element E, diode F;
The first terminals 1, temperature controller 2, electrical heating elements 3, overheat protector 4, the second terminals 5, insulation indication electroluminescent element 6, heating indication electroluminescent element 7, the first diode 8, overheated indication electroluminescent element 9, the second diode 10, the first step-down or current limiting element 11, the second step-down or current limiting element 12, the 3rd diode 13, the 3rd step-down or current limiting element 14, the 4th diode 15, the 4th step-down or current limiting element 16.
The specific embodiment
(embodiment 1)
See Fig. 6; a kind of drinking machine heating control and the display circuit of present embodiment comprise the first terminals 1, temperature controller 2, electrical heating elements 3, overheat protector 4, the second terminals 5, insulation indication electroluminescent element 6, heating indication electroluminescent element 7, the first diode 8, overheated indication electroluminescent element 9, the second diode 10 and the first step-down or current limiting element 11.
The first terminals 1, temperature controller 2, electrical heating elements 3, overheat protector 4 and the second terminals 5 are connected successively.Insulation indication electroluminescent element 6 is in parallel with temperature controller 2.Heating indication electroluminescent element 7 is in parallel with electrical heating elements 3.It is in parallel with overheat protector 4 after the first diode 8, overheated indication electroluminescent element 9 and the second diode 10 are connected successively; the first diode 8 and the second diode 10 oppositely arrange, and the positive and negative electrode of overheated indication electroluminescent element 9 is electrically connected with the positive pole of the first diode 8 and the positive pole of the second diode 10 respectively.One end of the first step-down or current limiting element 11 is electrically connected with the first terminals 1, and the other end is electrically connected with an end of the close overheated indication electroluminescent element 9 of the first diode 8.
After insulation indication electroluminescent element 6, heating indication electroluminescent element 7 and overheated indication electroluminescent element 9 refer to switch on and the current value that therefrom flows through reach irradiative electrical equipment behind the certain value.
The first diode 8 and the second diode 10 refer to have unidirectional can the energising and the electrical equipment of oppositely can not switch on (cut-off).
The first step-down or current limiting element 11 refer to can produce the electrical equipment of remarkable resistance (being also referred to as impedance) when electric current therefrom flows through, and the ability of larger its step-down of impedance or current limliting (referring to Limited Current) is just stronger.The first step-down or current limiting element 11 can be selected resistive element.
(embodiment 2)
See Fig. 7, present embodiment is substantially the same manner as Example 1, and difference is: the positive and negative electrode of overheated indication electroluminescent element 9 respectively with the negative pole of the second diode 10 be connected the negative electricity of diode 8 and be connected.
(embodiment 3)
See Fig. 8, present embodiment is substantially the same manner as Example 1, difference is: also comprise being connected on the insulation indication electroluminescent element 6 place electric branch circuits and also just indicating electroluminescent element 6 with insulation respectively, the second step-down or current limiting element 12 and the 3rd diode 13 that negative electricity connects, and be connected on the heating indication electroluminescent element 7 place electric branch circuits and respectively with heating indication electroluminescent element 7 just, the 3rd step-down or current limiting element 14 and the 4th diode 15 that negative electricity connects, and be connected on the overheated indication electroluminescent element 9 place electric branch circuits and the 4th step-down or the current limiting element 16 that are electrically connected with the positive pole of overheated indication electroluminescent element 9.
Be incubated indication electroluminescent element 6, heating indication electroluminescent element 7 and overheated indication electroluminescent element 9 and be light emitting diode, and insulation indicates electroluminescent element 6 and heating indication electroluminescent element 7 oppositely to arrange, heat indication electroluminescent element 7 and overheated indication electroluminescent element 9 arranges in the same way.The first diode 8 oppositely arranges with overheated indication electroluminescent element 9.The second diode 10 is connected with the negative electricity of overheated indication electroluminescent element 9.The 3rd diode 13 arranges in the same way with insulation indication electroluminescent element 6.The 4th diode 15 arranges in the same way with heating indication electroluminescent element 7.
The negative pole of the 3rd diode 13 is electrically connected with the first terminals 1.The second step-down or current limiting element 12 and the 3rd step-down or current limiting element 14 anodal all with temperature controller 2 and electrical heating elements 3 between electric connector be electrically connected.The negative pole of the 4th diode 15 is electrically connected with electric connector between electrical heating elements 3 and the overheat protector 4.The first diode 8, the 4th step-down or current limiting element 16, overheated indication electroluminescent element 9 and the second diode 10 are connected successively.The negative pole of the second diode 10 is electrically connected with the second terminals 5.The negative pole of the first diode 8 indicates the electric connector between electroluminescent element 7 and the 4th diode 15 to be electrically connected with heating.
The first step-down or current limiting element 11, the second step-down or current limiting element 12, the 3rd step-down or current limiting element 14 and the 4th step-down or current limiting element 16 are resistive element.The resistance of the resistance that the first step-down or current limiting element 11, the second step-down or current limiting element 12 and the 3rd step-down or current limiting element 14 adopt is all got 50～120K Ω.The resistance of the resistance that the 4th step-down or current limiting element 16 adopt is 0.5～20K Ω.
During the resistance of the resistance that the resistance of the resistance that adopts when the first step-down or current limiting element 11 significantly adopts greater than the 4th step-down or current limiting element 16, brightness when the brightness when overheated indication electroluminescent element 9 is luminous is will be basically luminous with heating indication electroluminescent element 7 or insulation indication electroluminescent element 6 is identical, for example: the first step-down or current limiting element 11, the resistance of the resistance that the second step-down or current limiting element 12 and the 3rd step-down or current limiting element 14 adopt is all got 100K Ω, the resistance of the resistance that the 4th step-down or current limiting element 16 adopt is got 1K Ω, difference in brightness about 1% between the brightness when brightness when then overheated indication electroluminescent element 9 is luminous and heating indication electroluminescent element 7 or insulation indication electroluminescent element 6 are luminous, these difference naked eyes are to distinguish basically, namely can think identical.
(embodiment 4)
See Fig. 9, present embodiment is substantially the same manner as Example 3, and difference is: the positive pole of the second step-down or current limiting element 12 is electrically connected with the first terminals 1.The negative pole of the 3rd diode 13 indicates the electric connector between electroluminescent element 7 and the 4th diode 15 to be electrically connected with heating.The negative pole of the 4th diode 15 is electrically connected with electric connector between temperature controller 2 and the electrical heating elements 3.Anodal and the 3rd step-down or the current limiting element 14 of the first diode 8 anodal all with electrical heating elements 3 and overheat protector 4 between electric connector be electrically connected.The first diode 8, the second diode 10, overheated indication electroluminescent element 9 and the 4th step-down or current limiting element 16 are connected successively.The positive pole of the 4th step-down or current limiting element 16 is electrically connected with the second terminals 5.
(embodiment 5)
See Figure 10, present embodiment is substantially the same manner as Example 3, and difference is: the negative pole of the 3rd diode 13 is electrically connected with the first terminals 1.The second step-down or current limiting element 12 and the 3rd step-down or current limiting element 14 anodal all with temperature controller 2 and electrical heating elements 3 between electric connector be electrically connected.The negative pole of the first diode 8 and the 4th diode 15 all with electrical heating elements 3 and overheat protector 4 between electric connector be electrically connected.The first diode 8, the 4th step-down or current limiting element 16, overheated indication electroluminescent element 9 and the second diode 10 are connected successively.The negative pole of the second diode 10 is electrically connected with the second terminals 5.
(embodiment 6)
See Figure 11, present embodiment is substantially the same manner as Example 3, and difference is: the positive pole of the second step-down or current limiting element 12 is electrically connected with the first terminals 1.The negative pole of the negative pole of the 3rd diode 13 and the 4th diode 15 all with temperature controller 2 and electrical heating elements 3 between electric connector be electrically connected.Anodal and the 3rd step-down or the current limiting element 14 of the first diode 8 anodal all with electrical heating elements 3 and overheat protector 4 between electric connector be electrically connected.The first diode 8, the second diode 10, overheated indication electroluminescent element 9 and the 4th step-down or current limiting element 16 are connected successively.The positive pole of the 4th step-down or current limiting element 16 is electrically connected with the second terminals 5.
Above-described specific embodiment; the purpose of this utility model, technical scheme and beneficial effect are further described; institute is understood that; the above only is specific embodiment of the utility model; be not limited to the utility model; all within spirit of the present utility model and principle, any modification of making, be equal to replacement, improvement etc., all should be included within the protection domain of the present utility model.
Claims (6)
1. a drinking machine heating is controlled and display circuit, it is characterized in that: comprise the first terminals (1), temperature controller (2), electrical heating elements (3), overheat protector (4), the second terminals (5), insulation indication electroluminescent element (6), heating indication electroluminescent element (7), the first diode (8), overheated indication electroluminescent element (9), the second diode (10) and the first step-down or current limiting element (11); Described the first terminals (1), temperature controller (2), electrical heating elements (3), overheat protector (4) and the second terminals (5) are connected successively; Described insulation indication electroluminescent element (6) is in parallel with temperature controller (2); Described heating indication electroluminescent element (7) is in parallel with electrical heating elements (3); In parallel with overheat protector (4) after described the first diode (8), overheated indication electroluminescent element (9) and the second diode (10) series connection; One end of described the first step-down or current limiting element (11) is electrically connected with the first terminals (1), and the other end is electrically connected with an end of the close overheated indication electroluminescent element (9) of the first diode (8).
2. a kind of drinking machine heating control according to claim 1 and display circuit is characterized in that: described the first diode (8) and oppositely setting of the second diode (10).
3. a kind of drinking machine heating according to claim 2 is controlled and display circuit, it is characterized in that: described insulation indication electroluminescent element (6), heating indication electroluminescent element (7) and overheated indication electroluminescent element (9) are light emitting diode, and insulation indication electroluminescent element (6) oppositely arranges with heating indication electroluminescent element (7), heating indication electroluminescent element (7) arranges in the same way with overheated indication electroluminescent element (9); Described the first diode (8) oppositely arranges with overheated indication electroluminescent element (9); Described the second diode (10) is connected with the negative electricity of overheated indication electroluminescent element (9).
4. a kind of drinking machine heating according to claim 3 is controlled and display circuit, it is characterized in that: also comprise being connected on the electric branch circuit of insulation indication electroluminescent element (6) place and also just indicating electroluminescent element (6) with insulation respectively, the second step-down or current limiting element (12) and the 3rd diode (13) that negative electricity connects, and be connected on the electric branch circuit of heating indication electroluminescent element (7) place and respectively with heating indication electroluminescent element (7) just, the 3rd step-down or current limiting element (14) and the 4th diode (15) that negative electricity connects, and be connected on the electric branch circuit of overheated indication electroluminescent element (9) place and the 4th step-down or the current limiting element (16) that are electrically connected with the positive pole of overheated indication electroluminescent element (9); Described the 3rd diode (13) arranges in the same way with insulation indication electroluminescent element (6); Described the 4th diode (15) arranges in the same way with heating indication electroluminescent element (7).
5. a kind of drinking machine heating according to claim 4 is controlled and display circuit, and it is characterized in that: described the first step-down or current limiting element (11), the second step-down or current limiting element (12), the 3rd step-down or current limiting element (14) and the 4th step-down or current limiting element (16) are resistive element.
6. a kind of drinking machine heating according to claim 5 is controlled and display circuit, it is characterized in that: the resistance of the resistance that described the first step-down or current limiting element (11), the second step-down or current limiting element (12) and the 3rd step-down or current limiting element (14) adopt is all got 50～120K Ω; The resistance of the resistance that described the 4th step-down or current limiting element (16) adopt is 0.5～20K Ω.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320142771 CN203244277U (en) | 2013-03-26 | 2013-03-26 | Water dispenser heating control and display circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320142771 CN203244277U (en) | 2013-03-26 | 2013-03-26 | Water dispenser heating control and display circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203244277U true CN203244277U (en) | 2013-10-23 |
Family
ID=49370751
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320142771 Withdrawn - After Issue CN203244277U (en) | 2013-03-26 | 2013-03-26 | Water dispenser heating control and display circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203244277U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103169382A (en) * | 2013-03-26 | 2013-06-26 | 江苏正本净化节水科技实业有限公司 | Water dispenser heating control and display circuit |
-
2013
- 2013-03-26 CN CN 201320142771 patent/CN203244277U/en not_active Withdrawn - After Issue
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103169382A (en) * | 2013-03-26 | 2013-06-26 | 江苏正本净化节水科技实业有限公司 | Water dispenser heating control and display circuit |
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| C14 | Grant of patent or utility model | ||
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| AV01 | Patent right actively abandoned |
Granted publication date: 20131023 Effective date of abandoning: 20141210 |
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| RGAV | Abandon patent right to avoid regrant |