A kind of micro-wave oven
Affiliated field
The utility model relates to a kind of micro-wave oven, particularly relates to a kind of micro-wave oven that detects cistern water level.
Background technology
At present micro-wave oven on the market all includes water tank and steam generator device, and this water tank is communicated with steam generator device so that water to be provided, this steam generator device water in it of vaporizing, and this is vaporized in order to heat food.Owing to all be not provided with the water level detecting protective device in the water tank of existing micro-wave oven, therefore existing micro-wave oven has following deficiency: one, do not having under the situation of water, if this steam generator device works on, the empty phenomenon of burning will appear in steam generator device so, this sky burns the service life that phenomenon can reduce steam generator device greatly, can damage steam generator device in the time of more serious; Its two, therefore if the water in the water tank does not detect, in the process of cooking food, the quantity of steam deficiency will influence conditioning effect, can not satisfy the demands of consumers.
The utility model content
The utility model provides a kind of micro-wave oven that detects cistern water level, and it has overcome the existing deficiency of failing sensed water level of the micro-wave oven of background technology.
The technical scheme that its technical problem that solves the utility model adopts is: a kind of micro-wave oven, it includes water tank, comprises that also one detects a protected location and a reminding unit.This detection protected location is connected in water tank, in order to detect cistern water level and to judge whether to send alerting signal according to testing result.This reminding unit is connected in this detection protected location, in order to receive alerting signal and to send prompting to the user.
In the technical program most preferred embodiment, this detection protected location comprises at least one level electrode sheet, a common port electrode slice and a control module.This each level electrode sheet is connected in water tank, and wherein, tank top is located on this level electrode sheet top, and the bottom flushes in the predetermined water level liquid level.This common port electrode slice is connected in water tank, when injecting in the water in the water tank when level electrode sheet bottom, can connect the level electrode sheet by the conduction of the water in the water tank.This control module is connected between this level electrode sheet and the common port electrode slice, is connected and whether sends alerting signal according to this judgement decision in order to judge whether common port electrode slice and level electrode sheet conduct electricity.
In the technical program most preferred embodiment, this level electrode sheet includes a low water level electrode sheet, and this low water level electrode sheet bottom flushes in predetermined low water level liquid level.
In the technical program most preferred embodiment, this level electrode sheet also includes a high water level electrode sheet, and this high water level electrode sheet bottom flushes in predetermined high water level liquid level, and this low water level electrode sheet bottom is lower than high water level electrode sheet bottom.
In the technical program most preferred embodiment, this level electrode sheet also includes a middle water level electrode slice, this middle water level electrode slice bottom flushes in predetermined middle water level liquid level, and this middle water level electrode slice bottom is between low water level electrode sheet bottom and high water level electrode sheet bottom.
In the technical program most preferred embodiment, the bottom of this each level electrode sheet is arranged in water tank, and this bottom is positioned at differing heights.
In the technical program most preferred embodiment, this control module comprises a testing circuit and a microcontroller, and this microcontroller is connected in testing circuit.This testing circuit fixed time interval produces sweep signal, it is connected between each level electrode sheet top and the common port electrode slice, and, it, constitute one between water, level electrode sheet and the common port electrode slice in the water tank and whether contact with water in the water tank, the electric loop of the closed or disconnection of control by level electrode sheet bottom.This microcontroller judges whether electric loop is closed with real-time sensed water level state.
In the technical program most preferred embodiment, this reminding unit is connected in this microcontroller.
In the technical program most preferred embodiment, this reminding unit is a light-emitting device, or, display unit, or, pronunciation device.
The beneficial effect of the technical program is: one; because the detection protected location just can detect the water of water tank the inside and whether reach cooking food when cooking food begins; thereby remind the consumer whether should add water; therefore has following advantage: (1), avoid occurring the empty phenomenon of burning; the protection micro-wave oven; (2), avoid the consumer under the not enough situation of water cooking food (because of water not enough; need add water midway; influence conditioning effect; lose time); allow the relieved cooking food of consumer, do not worry that water is not enough, need not to add water midway.They are two years old; the electric conductivity that detects protected location and be with water is principle; (constitute electric loop between water, level electrode sheet and the common port electrode slice in testing circuit, the water tank; whether the water in this level electrode sheet bottom and the water tank contacts; controlling this electric loop is closure or disconnection; microcontroller is judged the closed still disconnection of electric loop which level electrode sheet constitutes; with real-time sensed water level state); the sensing steady quality; be difficult for producing error signal; simple in structure, low cost of manufacture, long service life.
Description of drawings
Below in conjunction with drawings and Examples the utility model is further specified.
Fig. 1 has illustrated the schematic diagram of the detection protected location of present embodiment.
Fig. 2 has illustrated the schematic diagram of the electric loop of water level in the water tank of the present embodiment detection protected location under low water level the time.
The specific embodiment
Please refer to Fig. 1, it has illustrated the schematic diagram of the detection protected location of present embodiment.A kind of micro-wave oven, it includes water tank, and this water tank includes a casing 10 and a case lid 20, and this casing 10 has a diapire and and extends upward the perisporium that forms by the diapire periphery, and this case lid 20 is fixedly arranged on this perisporium.Comprise also in this micro-wave oven that one detects a protected location and a reminding unit.
This detection protected location comprises a low water level electrode sheet 30, middle water level electrode slice 40, high water level electrode sheet 50, a common port electrode slice 60 and a control module.
The material of this low water level electrode sheet 30, middle water level electrode slice 40 and high water level electrode sheet 50 is the SUS304 stainless steel substrates, and their length differs, arrangement from growing to lacking.This low water level electrode sheet 30, middle water level electrode slice 40 and high water level electrode sheet 50 tops are fixedly arranged on case lid 20 bottom surfaces, and make the bottom position of this low water level electrode sheet 30, middle water level electrode slice 40, high water level electrode sheet 50 arrange from the bottom up, wherein, these low water level electrode sheet 30 bottoms flush in predetermined low water level liquid level, these middle water level electrode slice 40 bottoms flush in predetermined middle water level liquid level, these high water level electrode sheet 50 bottoms flush in predetermined high water level liquid level, and these middle water level electrode slice 40 bottoms are between low water level electrode sheet 30 bottoms and high water level electrode sheet 50 bottoms.
The material of this common port electrode slice 60 is the SUS304 stainless steel substrates, and is located at casing 10 bottoms, and wherein, these common port electrode slice 60 first ends can conduct electricity the water in the connect box 10.
When low water level electrode sheet 30 or/and middle water level electrode slice 40 or/and the bottom of high water level electrode sheet 50 when being arranged in the water of casing 10, it can be connected with the water conduction in the casing 10, and then can conduct electricity with common port electrode slice 60 first ends and be connected.
Please refer to Fig. 2, it has illustrated the schematic diagram of electric loop of the detection protected location of present embodiment.This control module comprises a testing circuit 70 and a microcontroller 80, and this microcontroller 80 is connected in testing circuit 70.First end conduction of this testing circuit 70 connects the top of this low water level electrode sheet 30, middle water level electrode slice 40, high water level electrode sheet 50, and second end conduction connects these common port electrode slice 60 second ends, and this testing circuit 70 is gone back fixed time interval and produced the electric scanning signal.Please refer to Fig. 2, constitute an electric loop between water 90, low water level electrode sheet 30 or middle water level electrode slice 40 in testing circuit 70, the casing 10 or high water level electrode sheet 50 and the common port electrode slice 60, the change water contact that makes electrode different in size and different water levels and separating of water level makes the closed or disconnection of electric loop in water tank.Wherein, when low water level electrode sheet 30 or/and middle water level electrode slice 40 or/and the bottom of high water level electrode sheet 50 when being arranged in the water of casing 10, it can be connected with the water conduction in the casing 10, and then can be connected, and then make this electric loop constitute closed circuit with common port electrode slice 60 first ends conduction.This testing circuit 70 feeds back to microcontroller 80 with the signal scanning result, the closed still disconnection of electric loop that these microcontroller 80 analyzing and processing constitute to judge this low water level electrode sheet 30, middle water level electrode slice 40, high water level electrode sheet 50, and judge that with this water in casing 10 are to be in low water level or middle water level or high water level, send alerting signal according to above-mentioned judgement then.
This reminding unit 100 is the three-colour light-emitting device, or/and, the LCD display unit, or/and, pronunciation device, it is connected in this microcontroller 80, this microcontroller 80 arrives reminding unit 100 by RCA with signal feedback, in order to receive alerting signal and to send prompting to the user.
When this microcontroller 80 is judged the electric loop disconnection that high water level electrode sheet 50 constitutes, show that then water level arrives high water level, at this moment microcontroller 80 sends the high water level alerting signal to reminding unit 100, show the pronunciation of high water level or pronunciation device as of the same colour, the LCD display unit of three-colour light-emitting device, to remind full in consumer's water tank.
When this microcontroller 80 is judged the electric loop disconnection that middle water level electrode slice 50 constitutes, show that then water level arrives middle water level, at this moment microcontroller 80 sends the middle water level alerting signal to reminding unit 100, as second look of three-colour light-emitting device, the pronunciation that the LCD display unit shows middle water level or pronunciation device, to remind the middle water level that is in consumer's water tank.
When this microcontroller 80 is judged the electric loop disconnection that low water level electrode sheet 30 constitutes, show that then water level arrives low water level, at this moment microcontroller 80 sends the low water level alerting signal to reminding unit 100, as the 3rd look of three-colour light-emitting device, the pronunciation that the LCD display unit shows low water level or pronunciation device, to remind consumer's water tank not have water, remind the consumer to add water.
As required; surpass the steam of equivalent water level in the time of the time when the cooking vapor time that the consumer sets; detect protected location and will send corresponding signal; and add water by LCD display prompting consumer and (that is to say: the time that the cooking vapor time that the consumer sets has surpassed the heating of water tank surplus water in other words: not enough cooking vapor time time of water tank surplus water heating); the electronic type condensate tank of dehumidifier is different in size by electrode slice, utilizes the electric conductivity of water in the water tank to come sensed water level.
The above, it only is the utility model preferred embodiment, so can not limit the scope that the utility model is implemented with this, i.e. the equivalence of doing according to the utility model claim and description changes and modifies, and all should still belong in the scope that the utility model patent contains.