CN101846539B - Dual-purpose sensor and electric heating kettle with the same - Google Patents
Dual-purpose sensor and electric heating kettle with the same Download PDFInfo
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- CN101846539B CN101846539B CN 201010147630 CN201010147630A CN101846539B CN 101846539 B CN101846539 B CN 101846539B CN 201010147630 CN201010147630 CN 201010147630 CN 201010147630 A CN201010147630 A CN 201010147630A CN 101846539 B CN101846539 B CN 101846539B
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Abstract
The invention discloses a dual-purpose sensor and an electric heating kettle with the same. The dual-purpose sensor comprises a heat conducting case, a first lead wire, a second lead wire and a thermistor capable of being used for detecting the water temperature, wherein the thermistor is fixedly arranged in the heat conducting case through heat conducting rubber. The invention is characterized in that a liquid level detection unit is arranged on the heat conducting case, the liquid level detection unit consists of two mutually independent conductive contacts, and the first lead wire, the thermistor, the liquid level detection unit and the second lead wire are sequentially connected in series. The dual-purpose sensor can be used for detecting the water level, and can be used for detecting the water temperature. The electric heating kettle comprises a kettle body, a heating body, a controller and the dual-purpose sensor, wherein the heating body, the controller and the dual-purpose sensor are respectively arranged at the bottom of the kettle body, the heating body and the control end of the controller are electrically connected, the lead wire of the dual-purpose sensor is electrically connected with the signal input end of the controller, and the electric heating kettle has the water temperature detection and dry combustion prevention functions.
Description
Technical field
The present invention relates to a kind of synthesis sensor and with the electric kettle of this synthesis sensor.
Background technology
At present, cooling-water temperature sensor is widely used in the fields such as production, life and science and technology, especially in household appliance technical field, for example, in the household electrical appliance such as electric kettle, electric heater, electric coffee maker, electric heating bucket, solar water heater, generally all adopt cooling-water temperature sensor to detect the temperature of water.
Existing cooling-water temperature sensor generally comprises cylindric heat conduction shell and thermistor, the upper end closed of above-mentioned cylindric heat conduction shell and form the upper surface, above-mentioned thermistor fixedly is located in cylindric heat conduction shell by heat-conducting glue, and the two ends of thermistor are connected with respectively lead-in wire.
When detecting water temperature, cooling-water temperature sensor is placed in water, and the lead-in wire of two on thermistor is electrically connected to the signal input part of controller (generally adopting single-chip microcomputer).Because the variation with water temperature of the resistance of thermistor changes, so controller is by detecting the variation of thermistor resistance, thereby can obtain the variation of water temperature.
But existing cooling-water temperature sensor generally can only detect the temperature of water, and can't sensed water level, therefore, designs and a kind ofly can either sensed water level can detect again the synthesis sensor of water temperature, has become the technical matters that present urgent need solves.
Summary of the invention
First technical matters that the present invention will solve is to provide and a kind ofly can either sensed water level can detects the synthesis sensor of water temperature again.
In order to solve above-mentioned first technical matters, the technical solution used in the present invention is as follows:
A kind of synthesis sensor, comprise heat conduction shell, the first lead-in wire, the second lead-in wire and can be used for detecting the thermistor of water temperature, above-mentioned thermistor fixedly is located in heat conduction shell by heat-conducting glue, it is characterized in that: above-mentioned heat conduction shell is provided with a liquid level detecting unit, above-mentioned liquid level detecting unit is made of two separate conductive contacts, and above-mentioned the first lead-in wire, thermistor, liquid level detecting unit and the second lead-in wire are connected in series successively.
Above-mentioned liquid level detecting unit is electrically connected to other components and parts by its conductive contact.
Comprise the liquid level detecting unit that can be used for sensed water level and the thermistor that can be used for detecting water temperature due to this synthesis sensor, the first lead-in wire, thermistor, liquid level detecting unit and the second lead-in wire are connected in series successively, so, water level signal and water temperature signal can be detected simultaneously by the first lead-in wire and the second lead-in wire, therefore, this synthesis sensor can either sensed water level can detect water temperature again.
As a further improvement on the present invention, be electrically connected with the 3rd lead-in wire between described liquid level detecting unit and thermistor.
Like this, water level signal and water temperature signal can be detected simultaneously by the first lead-in wire and the second lead-in wire, water temperature signal can be detected by the first lead-in wire and the 3rd lead-in wire, water level signal can be detected by the second lead-in wire and the 3rd lead-in wire.
As preferred structure of the present invention, described heat conduction shell adopts cylindric heat conduction shell, the upper surface sealing of cylindric heat conduction shell.
Described cylindric heat conduction shell preferably adopts the cylindrical metal housing; Described heat-conducting glue adopts insulating heat-conductive glue; Two conductive contacts of described liquid level detecting unit are fixedly mounted on the cylindrical metal housing by insulator respectively.
In order to facilitate the installation of this synthesis sensor, described cylindrical metal housing is provided with bindiny mechanism, and above-mentioned bindiny mechanism comprises bulge loop and O-ring seal, and above-mentioned bulge loop fixedly is located on the outside surface of cylindrical metal housing, the lower end of bulge loop is provided with annular groove, and above-mentioned O-ring seal is positioned at groove; Cylindrical metal housing parts below above-mentioned bulge loop is provided with external thread.
Like this, by the cooperation of outer bulge loop and screw thread, this synthesis sensor is arranged in various containers easily, simultaneously, by the cooperation of bulge loop and O-ring seal, can makes the installation of this synthesis sensor have good sealing property.
As the first decision design mode of liquid level detecting unit in the present invention, two conductive contacts of described liquid level detecting unit all are located on the upper surface of cylindrical metal housing.
As the second decision design mode of liquid level detecting unit in the present invention, two conductive contacts of described liquid level detecting unit all are located on the side of cylindrical metal housing.
The third decision design mode as liquid level detecting unit in the present invention, in two conductive contacts of described liquid level detecting unit, a conductive contact is located on the upper surface of cylindrical metal housing, and another conductive contact is located on the side of cylindrical metal housing.
Second technical matters that the present invention solves is to provide a kind of electric kettle with above-mentioned synthesis sensor.
In order to solve above-mentioned second technical matters, the technical solution used in the present invention is as follows:
A kind of electric kettle with above-mentioned synthesis sensor, comprise kettle body, heater, controller and above-mentioned synthesis sensor, above-mentioned heater, controller and above-mentioned synthesis sensor are located at respectively on the bottom of kettle body, heater is electrically connected to the control end of controller, and the lead-in wire of above-mentioned synthesis sensor is electrically connected to the signal input part of controller.
Above-mentioned controller generally adopts single-chip microcomputer, and above-mentioned controller is prior art.
The present invention's beneficial effect against existing technologies is:
This synthesis sensor comprises the liquid level detecting unit that can be used for sensed water level and the thermistor that can be used for detecting water temperature due to this synthesis sensor, so can either sensed water level can detect water temperature again.Simultaneously, because the liquid level detecting unit is located on heat conduction shell, the liquid level detecting unit is made of two separate conductive contacts, so, simple in structure, the advantages such as production cost is low, reliable operation that this synthesis sensor has.
Because being equipped with, electric kettle of the present invention can either sensed water level can detect the synthesis sensor of water temperature again, so, after controller obtains low-water level signal that synthesis sensor transports, controller just can be exported a control signal makes heater stop heating power, thereby reaches the purpose of anti-dry; Simultaneously, this electric kettle also has the water temperature of detection function.In addition, electric kettle of the present invention also has simple in structure, the advantages such as production cost is low, reliable operation.
The present invention is described further below in conjunction with the drawings and specific embodiments.
Description of drawings
Fig. 1 is the cut-open view of the preferred embodiment 1 of synthesis sensor in the present invention;
Fig. 2 is the cut-open view of the preferred embodiment 2 of synthesis sensor in the present invention;
Fig. 3 is the cut-open view of the preferred embodiment 3 of synthesis sensor in the present invention;
Fig. 4 is the cut-open view of the preferred embodiment 4 of synthesis sensor in the present invention;
Fig. 5 is the cut-open view of the preferred embodiment of electric kettle in the present invention.
Embodiment
Embodiment 1
As shown in Figure 1, synthesis sensor in this preferred embodiment, comprise cylindric heat conduction shell 2, first lead-in wire the 7, second lead-in wire 8 that seals upper surface 1 and the thermistor 3 that can be used for detecting water temperature, above-mentioned thermistor 3 fixedly is located in cylindric heat conduction shell 2 by heat-conducting glue 4, the upper surface 1 of above-mentioned cylindric heat conduction shell 2 is provided with a liquid level detecting unit 56, above-mentioned liquid level detecting unit 56 is made of two separate conductive contacts 5,6, and above-mentioned the first lead-in wire 7, thermistor 3, liquid level detecting unit 56 and the second lead-in wire 8 are connected in series successively; The conductive contact 5 of above-mentioned liquid level detecting unit 56 is electrically connected to thermistor 3, and the conductive contact 6 of liquid level detecting unit 56 is electrically connected to the second lead-in wire 8.
Above-mentioned cylindric heat conduction shell 2 is provided with bindiny mechanism, above-mentioned bindiny mechanism comprises bulge loop 9 and O-ring seal 10, above-mentioned bulge loop 9 fixedly is located on the outside surface of cylindric heat conduction shell 2, and the lower end of bulge loop 9 is provided with annular groove 11, and above-mentioned O-ring seal 10 is positioned at groove 11; Cylindric heat conduction shell below above-mentioned bulge loop 9 partly is provided with external thread 12.Like this, by the cooperation of outer bulge loop 9 and external thread 12, this synthesis sensor is arranged in various containers easily, simultaneously, by the cooperation of bulge loop 9 and O-ring seal 10, can makes the installation of this synthesis sensor have good sealing property.
During for detection of water-level and water-temperature, this synthesis sensor vertically is arranged on a certain position when this synthesis sensor; Water logging around this installation site there is not two conductive contacts 5 of liquid level detecting unit 56,6 the time, two conductive contacts 5,6 are by the water conducting, can access the signal of two conductive contacts 5,6 conductings by first lead-in wire the 7, second lead-in wire 8, thereby can learn that also there is a certain amount of water in this installation site; Water around this installation site can not flood the conductive contact 5 of liquid level detecting unit 56,6 the time, two conductive contacts 5,6 disconnect, can access the signal of two conductive contacts 5,6 not conductings by first lead-in wire the 7, second lead-in wire 8, thereby can learn that the water level around this installation site is very low, realize the detection of water level;
Simultaneously, due to the variation of thermistor 3 resistances, so, the variation of water temperature on every side of this installation site can be detected by first lead-in wire the 7, second lead-in wire 8.
As shown in Figure 2, cylindric heat conduction shell in embodiment 2 adopts cylindrical metal housing 20, above-mentioned heat-conducting glue adopts insulating heat-conductive glue 40, the conductive contact 5 of liquid level detecting unit 56 is fixedly mounted on by insulator 50 on the upper surface 1 of cylindrical metal housing 20, and the conductive contact 6 of leading of liquid level detecting unit 56 is fixedly mounted on the upper surface 1 of cylindrical metal housing 20 by insulator 60.
As shown in Figure 3, be electrically connected with the 3rd lead-in wire 13 in embodiment 3 between the conductive contact 5 of liquid level detecting unit 56 and thermistor 3.
Like this, water level signal and water temperature signal can be detected simultaneously by first lead-in wire the 7 and second lead-in wire 8, water temperature signal can be detected by the first lead-in wire the 7 and the 3rd lead-in wire 13, water level signal can be detected by the second lead-in wire the 8 and the 3rd lead-in wire 13.
As shown in Figure 4, in embodiment 4, the conductive contact 5 of liquid level detecting unit 56 and insulator 50 thereof, conductive contact 6 and insulator 60 thereof all are located on the side of cylindrical metal housing 20.
During for detection of water-level and water-temperature, this synthesis sensor vertically is arranged on a certain position when this synthesis sensor; Water logging around this installation site there is not two conductive contacts 5 of liquid level detecting unit 56,6 the time, two conductive contacts 5,6 are by the water conducting, can access the signal of two conductive contacts 5,6 conductings by first lead-in wire the 7, second lead-in wire 8, thereby can learn that also there is a certain amount of water in this installation site; When the water around this installation site can not flood the conductive contact 5 of liquid level detecting unit 56, two conductive contacts 5,6 disconnect, can access the signal of two conductive contacts 5,6 not conductings by first lead-in wire the 7, second lead-in wire 8, thereby can learn that the water level around this installation site is very low, realize the detection of water level;
Simultaneously, due to the variation of thermistor 3 resistances, so, the variation of water temperature on every side of this installation site can be detected by first lead-in wire the 7, second lead-in wire 8.
In like manner, two conductive contacts 5,6 in above-described embodiment 1, two conductive contacts 5,6 in embodiment 3, insulator 50,60 all can be located on the side of cylindrical metal housing 20; In addition, two conductive contacts 5,6 in above-described embodiment 1 can be also that a conductive contact is located on the upper surface of cylindrical metal housing, and another conductive contact is located on the side of cylindrical metal housing; Two conductive contacts 5,6 in above-described embodiment 3, insulator 50,60 can be also that a conductive contact and insulator thereof are located on the upper surface of cylindrical metal housing, and another conductive contact and insulator thereof are located on the side of cylindrical metal housing; Just given an example no longer one by one at this.
as shown in Figure 5, a kind of electric kettle with synthesis sensor in embodiment 2, comprise kettle body 21, heater 22, synthesis sensor 24 in controller 23 and embodiment 2, the general single-chip microcomputer that adopts of above-mentioned controller 23, controller 23 is prior art, above-mentioned heater 22 and controller 23 are located at respectively on the bottom of kettle body 21, heater 22 is electrically connected to the control end of controller 23, above-mentioned synthesis sensor 24 is arranged on the bottom of kettle body 21 by bolt 25, the first lead-in wire 7 of above-mentioned synthesis sensor 24, the second lead-in wire 8 is electrically connected to the signal input part of controller 23 respectively.
When the water logging in kettle body 21 there is not two conductive contacts of synthesis sensor 24, two conductive contacts are by the water conducting, controller 23 8 can access the signal of two conductive contact conductings by first lead-in wire the 7, second lead-in wire, thereby can learn and also have a certain amount of water in kettle body 21; When the water in kettle body 21 can not flood two conductive contacts of synthesis sensor 24, two conductive contacts disconnect, controller 23 can access the signal of two not conductings of conductive contact by first lead-in wire the 7, second lead-in wire 8, thereby can learn that the water level in kettle body 21 is very low, like this, controller 23 is exported a control signal and is made heater 22 stop heating power, thereby reach the purpose of anti-dry after obtaining the signal of two conductive contacts disconnections.Simultaneously, controller 23 can detect the variation of kettle body 21 interior water temperatures by the variation of thermistor 3 resistances.
In like manner, in embodiment 1, embodiment 3, embodiment 4, synthesis sensor also can be applied in electric kettle, has just given an example no longer one by one at this.
Claims (7)
1. synthesis sensor, comprise heat conduction shell, the first lead-in wire, the second lead-in wire and for detection of the thermistor of water temperature, above-mentioned thermistor fixedly is located in heat conduction shell by heat-conducting glue, it is characterized in that: above-mentioned heat conduction shell is provided with a liquid level detecting unit, above-mentioned liquid level detecting unit is made of two separate conductive contacts, and above-mentioned the first lead-in wire, thermistor, liquid level detecting unit and the second lead-in wire are connected in series successively; Described heat conduction shell adopts cylindric heat conduction shell, the upper surface sealing of cylindric heat conduction shell; Described cylindric heat conduction shell adopts the cylindrical metal housing; Described heat-conducting glue adopts insulating heat-conductive glue; Two conductive contacts of described liquid level detecting unit are fixedly mounted on the cylindrical metal housing by insulator respectively.
2. synthesis sensor as claimed in claim 1, is characterized in that: be electrically connected with the 3rd lead-in wire between described liquid level detecting unit and thermistor.
3. synthesis sensor as claimed in claim 1, it is characterized in that: described cylindrical metal housing is provided with bindiny mechanism, above-mentioned bindiny mechanism comprises bulge loop and O-ring seal, above-mentioned bulge loop fixedly is located on the outside surface of cylindrical metal housing, the lower end of bulge loop is provided with annular groove, and above-mentioned O-ring seal is positioned at groove; Cylindrical metal housing parts below above-mentioned bulge loop is provided with external thread.
4. synthesis sensor as claimed in claim 1, it is characterized in that: two conductive contacts of described liquid level detecting unit all are located on the upper surface of cylindrical metal housing.
5. synthesis sensor as claimed in claim 1, it is characterized in that: two conductive contacts of described liquid level detecting unit all are located on the side of cylindrical metal housing.
6. synthesis sensor as claimed in claim 1, it is characterized in that: in two conductive contacts of described liquid level detecting unit, a conductive contact is located on the upper surface of cylindrical metal housing, and another conductive contact is located on the side of cylindrical metal housing.
7. electric kettle with synthesis sensor, comprise the described synthesis sensor of any one in kettle body, heater, controller and claim 1 to 6, above-mentioned heater, controller and above-mentioned synthesis sensor are located at respectively on the bottom of kettle body, heater is electrically connected to the control end of controller, and the lead-in wire of above-mentioned synthesis sensor is electrically connected to the signal input part of controller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010147630 CN101846539B (en) | 2010-04-09 | 2010-04-09 | Dual-purpose sensor and electric heating kettle with the same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010147630 CN101846539B (en) | 2010-04-09 | 2010-04-09 | Dual-purpose sensor and electric heating kettle with the same |
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| Publication Number | Publication Date |
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| CN101846539A CN101846539A (en) | 2010-09-29 |
| CN101846539B true CN101846539B (en) | 2013-05-15 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201010147630 Expired - Fee Related CN101846539B (en) | 2010-04-09 | 2010-04-09 | Dual-purpose sensor and electric heating kettle with the same |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103838269A (en) * | 2012-11-22 | 2014-06-04 | 倪岩荣 | Intelligent temperature controller |
| CN103968914B (en) * | 2013-01-26 | 2018-02-23 | 陈宗仁 | A kind of water level detecting installation method of cordless electrothermal kettle |
| CN109965695A (en) * | 2019-05-14 | 2019-07-05 | 程进远 | A kind of integrated control unit of sensed water level height and temperature |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5178009A (en) * | 1990-03-08 | 1993-01-12 | Industrial Engineering And Equipment Company | Integral temperature and liquid level sensor and control |
| GB2266956B (en) * | 1992-05-13 | 1995-10-25 | Spirax Sarco Ltd | Sensor Unit |
| CN2505811Y (en) * | 2001-10-26 | 2002-08-14 | 汤成贵 | Contact type water temperature water level sensor |
| CN2631376Y (en) * | 2003-07-25 | 2004-08-11 | 深圳索雷克家用电器有限公司 | Electronic thermostatic kettles |
| CN201037775Y (en) * | 2006-08-10 | 2008-03-19 | 郭峰 | Solar energy water-heater water temperature water level sensor |
| CN201149505Y (en) * | 2007-10-29 | 2008-11-12 | 姜维林 | Probe for detecting water temperature and high water level of solar water heater |
| CN101476947A (en) * | 2009-01-10 | 2009-07-08 | 漳州万利达光催化科技有限公司 | Multifunctional sensor |
| CN201637501U (en) * | 2010-04-09 | 2010-11-17 | 林家彬 | Dual-purpose sensor and electric kettle with the same |
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