CN211432317U

CN211432317U - Liquid level detection device and heating appliance

Info

Publication number: CN211432317U
Application number: CN201921984279.6U
Authority: CN
Inventors: 邓永文; 敬仕林; 宁瀛锋; 郑丰周; 张祝宾; 杜东逸; 赵跃; 彭理; 王锦辉
Original assignee: Gree Electric Appliances Inc of Zhuhai
Current assignee: Gree Electric Appliances Inc of Zhuhai
Priority date: 2019-11-15
Filing date: 2019-11-15
Publication date: 2020-09-08
Anticipated expiration: 2029-11-15

Abstract

The utility model discloses a liquid level detection device for detect the liquid level of heating utensil, the heating utensil includes container and base, and liquid level detection device sets up in the base bottom surface, including relative induction element and the magnetic element who sets up, induction element fixes in the base bottom surface, and when the container was arranged in on the base and was watered to the container, the base moved down and is driven induction element and descend, through the signal of telecommunication detection base's between induction element and the magnetic element amount of movement, thereby detect the water level in the kettle. The utility model also discloses a heating utensil. Liquid level detection device set up in the base, not with the water contact in the container, promote liquid level data measurement's accuracy greatly, and the water level can continuous measurement, simultaneously, utilize liquid level detection device to detect the water level, eliminated temperature drift, clutter interference and detected the influence to the kettle.

Description

Liquid level detection device and heating appliance

Technical Field

The utility model relates to a household appliance especially relates to a liquid level detection device and heating utensil.

Background

In our life, an electric kettle, an electric teapot and the like are commonly used life electric appliances in our life, and the electric kettle, the electric teapot and the like have the main functions of boiling water for drinking and making tea.

Along with the improvement of people's standard of living, people also are more and more high to the function and the user experience requirement of product, and the user of many users especially making tea now has certain understanding demand to the water level condition of water in the kettle, need show with mutual interface, consequently need use water level detection, and water level detection method is various in the trade at present, for example buoy type liquid level detection device, resistance-type liquid level detection device, capacitanc liquid level detection device etc.. However, the float type liquid level detection device is a mechanical liquid level detection method, and has low detection precision and is easy to break down; the water level detection point of the resistance type liquid level detection device is exposed in the air or directly contacted with water, and when the resistance type liquid level detection device is used for a long time, the surface of the detection point is easily oxidized or attached with scale, so that the detection precision is influenced.

In the prior art, a liquid level detection device is also used for detecting the liquid level by adopting a method of measuring the distance by sound waves or ultrasonic waves, but the cost is too high, and the device is not convenient to popularize in a large range.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a liquid level detection device and heating utensil to solve the technical problem who mentions in the background art.

In order to achieve the above object, the present invention provides a liquid level detecting device and a heating device, which have the following technical solutions:

the utility model provides a liquid level detection device for detect the liquid level of heating utensil, the heating utensil includes container and base, and liquid level detection device sets up in the base bottom surface, including relative induction element and the magnetic element who sets up, induction element fixes in the base bottom surface, and when the container was arranged in on the base and was watered to the container, the base moved down and is driven induction element and descend, through the signal of telecommunication change between detection induction element and the magnetic element to detect the water level in the kettle.

Furthermore, the liquid level detection device further comprises a sleeve fixed on the bottom surface of the base, the opening of the sleeve is downward, the sensing element is fixed at the bottom of the sleeve, and the sensing element is connected with the magnetic element through a first spring.

Furthermore, the sensing element is a magnetic sensor, the magnetic element can be a magnet, and the sensing element is electrically connected with the controller through a lead.

Furthermore, the magnetic element is fixed on the supporting seat, the other end of the first spring is fixedly connected with the supporting seat, the bottom end of the sleeve is sleeved on the supporting seat, and the sleeve is lifted relative to the supporting seat.

Furthermore, the top end of the supporting seat is provided with a conical surface, and the diameter of the top of the conical surface is smaller than that of the bottom of the conical surface.

Further, the base also comprises lifting support legs, the number of the support legs at least comprises two, and the balance of the base is maintained through the support legs and the liquid level detection device.

Further, the base includes lid and box body, and the lid closes on the box body, and the controller is fixed in the box body bottom surface, and the box body bottom surface sets up the through-hole, and stabilizer blade or liquid level sensing device's bottom passes the through-hole respectively.

Further, the stabilizer blade includes branch, lower margin and second spring, and the branch top is fixed in the lid bottom surface, and the branch bottom passes the through-hole and stretches out the box body outside, and the second spring is established to the cover on the branch, and the branch bottom sets up the lower margin, second spring top and box body butt, second spring bottom and lower margin butt.

A heating appliance comprises a container and a base, wherein a coupler and a heating device are arranged on the base, and the liquid level detection device is arranged on the bottom surface of the base.

The utility model discloses a liquid level detection device and heating utensil have following advantage:

liquid level detection device set up in the base, not with the water contact in the container, promote liquid level data measurement's accuracy greatly, and the water level can continuous measurement, simultaneously, utilize liquid level detection device to detect the water level, eliminated the temperature drift, clutter interference detects the influence to the kettle, this liquid level detection device easy operation, the practicality is strong, is convenient for promote on a large scale.

Drawings

FIG. 1 is a schematic view of an electric kettle according to the present invention;

FIG. 2 is a schematic structural view of a base of the electric kettle of the present invention;

fig. 3 is the structure schematic diagram of the liquid level detection device of the present invention.

The reference numbers in the figures illustrate: 1. a container; 2. a base; 21. a cover body; 22. a box body; 3. a coupler; 4. a displacement sensor; 41. an inductive element; 42. a magnetic element; 43. a sleeve; 44. a supporting seat; 441. a conical surface; 45. a first spring; 5. a controller; 6. a wire; 7. and (7) supporting legs.

Detailed Description

In order to better understand the purpose, structure and function of the present invention, the following description will be made in detail with reference to the accompanying drawings.

The heating device of the present application is mainly a heating device such as an electric kettle, an electric teapot, etc., and the following description will be given in detail by taking the electric kettle as an example. As shown in fig. 1-3, the utility model discloses a liquid level detection device for detect the liquid level of heating utensil, the heating utensil includes container 1 and base 2, liquid level detection device sets up in base 2 bottom surface, liquid level detection device is including relative induction element 41 and the magnetic element 42 who sets up, induction element 41 fixes in base 2 bottom surface, magnetic element 42 is fixed subaerial, arrange base 2 in and to the watered in-process of container 1 when container 1, base 2 moves down and drives induction element 41 and descend, detect the amount of movement of base 2 through the signal of telecommunication between induction element 41 and the magnetic element 42, thereby detect the water level in the kettle. When container 1 placed base 2 and added water, along with adding the increase of the water yield, base 2 moves down, detects the amount of movement of base 2 and then turns into the sign to adding the water yield through liquid level detection device, and this liquid level detection device sets up in base 2, does not contact with the water in the container 1, promotes liquid level detection device's detection precision greatly.

The liquid level detection device further comprises a sleeve 43 fixed on the bottom surface of the base 2, the sleeve 43 is downward opened, the sensing element 41 is fixed on the bottom of the sleeve 43, the sensing element 41 is connected with the magnetic element 42 through a first spring 45, the first spring 45 is arranged in the sleeve 43, one end of the first spring 45 is fixedly connected with the sensing element 41, and the other end of the first spring 45 is connected with the magnetic element 42.

The sensing element 41 is a magnetic sensor, such as a hall switch, etc., and the magnetic element 42 may be a magnet. The inductive element 41 is electrically connected to the controller 5 by a wire 6. Along with the lifting of the base 2, the distance between the induction element 41 and the magnetic element 42 is changed, so that the magnetic field intensity between the induction element 41 and the magnetic element is changed, the lifting of the base 2 is in positive correlation with the water injection amount or the liquid level in the container 1, and then the controller 5 detects the electric signal of the induction element 41 to represent the liquid level in the container 1.

The magnetic element 42 is fixed on the support 44, the other end of the first spring 45 is fixedly connected with the support 44, the bottom end of the sleeve 43 is sleeved on the support 44, and the sleeve 43 is lifted relative to the support 44.

The top end of the supporting seat 44 is provided with a conical surface 441, the diameter of the top of the conical surface 441 is smaller than that of the bottom of the conical surface 441, and when the supporting seat 44 is inserted into the sleeve 43, the frustum plays a role in guiding, so that the container 1 is ensured to be always kept horizontal in the water injection process.

The base 2 further comprises lifting support legs, the number of the support legs at least comprises two, and the balance between the support legs and the base 2 is achieved through the position of the liquid level detection device. As shown in fig. 2, the base 2 includes two legs, and the liquid level sensing device and the legs are respectively disposed at the vertexes of the regular triangle.

The base 2 comprises a cover body 21 and a box body 22, the cover body 21 covers the box body 22, the controller 5 is fixed on the bottom surface of the box body 22, the bottom surface of the box body 22 is provided with a through hole, and the bottoms of the support legs or the liquid level sensing devices respectively penetrate through the through holes.

The stabilizer blade includes branch, lower margin and second spring, and the branch top is fixed in lid 21 bottom surface, and the branch bottom is passed the through-hole and is stretched out the box body 22 outside, and the second spring is established to the cover on the branch, and the branch bottom sets up the lower margin, second spring top and box body 22 butt, second spring bottom and lower margin butt.

When the electric kettle is used, firstly, the reading of the liquid level detection device is cleared to zero, because the liquid level detection device is positioned at the bottom of the kettle, the base 2, the container 1 and the like can apply gravity to the sensing element 41, and because the sensing element 41 only detects the water level, other gravity interference needs to be eliminated, therefore, the clearing to zero is carried out before the whole electric kettle is added with water.

Secondly, clear "zero" processing back, add water in the kettle, different water levels this moment, the shrinkage of first spring pressure 45 is also different, consequently the signal of telecommunication that transmits controller 5 through inductive element 41 is also different, can carry out segmentation according to the demand of oneself and handle, for example: the corresponding signal voltage of 0-AmL of the 1 st water level section is 0-V1; the corresponding signal voltage of the 2 nd water level section AmL-BmL is V1-V2; the 3 rd water level segments BmL-CmL correspond to signal voltages of V2-V3, and the like, and simultaneously record the corresponding voltages of the water level segments.

Finally, assigning values in the controller 5 according to the voltages corresponding to the different water level sections, and if the controller 5 detects that the voltage of the induction element 41 is 0-V1, judging the controller 5 as the 1 st water level section; when the voltage of the sensing element 41 is detected to be V1-V2, the controller 5 judges that the water level is the 2 nd water level section; detecting the voltage of the inductive element 41 to be V2-V3; the controller 5 judges the 3 rd water level segment and so on and displays it in a relevant manner. Such as display by means of a nixie tube, a display module, liquid crystal, etc.

The utility model also provides a heating appliance, including container 1 and base 2, set up coupler 3 and heating device on the base 2, 2 bottom surfaces of base set up lift landing leg 7 and foretell liquid level detection device, when container 1 placed base 2 and added water, along with adding increasing of the water yield, base 2 moves down, detects the amount of movement of base 2 and then turns into the sign to adding the water yield through liquid level detection device.

This liquid level detection device sets up in base 2, does not contact with the water in the container 1, promotes liquid level data measurement's accuracy greatly, and the water level can continuous measurement, simultaneously, utilizes liquid level detection device to detect the water level, has eliminated the temperature drift, clutter interference detects the influence to the kettle, this liquid level detection device easy operation, and the practicality is strong, is convenient for promote on a large scale.

It is to be understood that the present invention has been described with reference to certain embodiments, and that various changes or equivalents may be substituted for elements thereof by those skilled in the art without departing from the spirit and scope of the invention. In addition, many modifications may be made to adapt a particular situation or material to the teachings of the invention without departing from the essential scope thereof. Therefore, the present invention is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of the present application are intended to be covered by the present invention.

Claims

1. The utility model provides a liquid level detection device, a liquid level for detecting heating appliance, heating appliance includes container (1) and base (2), liquid level detection device sets up in base (2) bottom surface, a serial communication port, including relative induction element (41) and magnetic element (42) that set up, induction element (41) are fixed in base (2) bottom surface, when base (2) is arranged in container (1) and when adding water to container (1), base (2) move down and drive induction element (41) and descend, through detecting the signal of telecommunication change between induction element (41) and the magnetic element (42), with detect the water level in the kettle.

2. The liquid level detection device according to claim 1, further comprising a sleeve (43) fixed on the bottom surface of the base (2), wherein the sleeve (43) is opened downwards, the sensing element (41) is fixed on the bottom surface of the sleeve (43), and the sensing element (41) is connected with the magnetic element (42) through a first spring (45).

3. The device according to claim 2, wherein the sensing element (41) is a magnetic sensor, the magnetic element (42) is a magnet, and the sensing element (41) is electrically connected to the controller (5) via the wire (6).

4. The liquid level detecting device according to claim 2, wherein the magnetic element (42) is fixed on the supporting seat (44), the other end of the first spring (45) is fixedly connected with the supporting seat (44), the bottom end of the sleeve (43) is sleeved on the supporting seat (44), and the sleeve (43) is lifted relative to the supporting seat (44).

5. The liquid level detecting device as claimed in claim 4, wherein the supporting seat (44) is provided with a tapered surface (441) at the top end, and the diameter of the top of the tapered surface (441) is smaller than that of the bottom of the tapered surface (441).

6. The liquid level detection device according to claim 1, wherein the base (2) further comprises at least two lifting legs, and the balance of the base (2) is maintained by the legs and the liquid level detection device.

7. The liquid level detection device according to claim 6, wherein the base (2) comprises a cover body (21) and a box body (22), the cover body (21) is covered on the box body (22), the controller (5) is fixed on the bottom surface of the box body (22), the bottom surface of the box body (22) is provided with through holes, and the bottom of the support leg or the liquid level sensing device respectively passes through the through holes.

8. The liquid level detection device according to claim 7, wherein the support leg comprises a support rod, a ground foot and a second spring, the top end of the support rod is fixed on the bottom surface of the cover body (21), the bottom end of the support rod extends out of the box body (22) through the through hole, the second spring is sleeved on the support rod, the ground foot is arranged at the bottom end of the support rod, the top end of the second spring is abutted against the box body (22), and the bottom end of the second spring is abutted against the ground foot.

9. A heating appliance comprising a container (1) and a base (2), a coupler (3) and a heating device being provided on the base (2), characterized in that the liquid level detection device as claimed in any one of claims 1 to 8 is provided on the bottom surface of the base (2).

10. The heating appliance according to claim 9, wherein the base (2) further comprises lifting feet, the number of feet comprising at least two, the balance of the base (2) being maintained by the feet and the level detection means.