Refrigerator door body state detection device
By installing a combination device of Hall sensor and fixed magnet on the refrigerator door, we can detect whether the door body is closed normally and remind the user through an alarm, which solves the safety and economic problems caused by the user forgetting to close the refrigerator door, and improves the safety and efficiency of the refrigerator.
Patent Information
- Application Number
- CN202420370050.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-02-28
- Publication Date
- 2025-03-07
- Estimated Expiration
- 2034-02-28
AI Technical Summary
When using refrigerators, users are prone to forget to close the refrigerator door due to temporary storage and withdrawal of ingredients, resulting in safety accidents and economic losses. At the same time, it is difficult to determine whether the door is closed tightly during the closing process, especially for elderly people and children at home.
A refrigerator door state detection device is designed, using Hall sensor and fixed magnet to cooperate to determine whether the door is closed normally by detecting the intensity of the working magnetic field, and a controller issuing an unclosed signal, and a warning device is used to remind the user.
It effectively avoids the phenomenon that the temperature in the box is increased due to cold leakage due to the failure of the refrigerator door, and improves the user's sense of security and economic benefits, especially in home use.
Smart Images
Figure CN222578661U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of refrigerators, and in particular to a refrigerator door state detection device. Background Art
[0002] Refrigerators are used to refrigerate or freeze food and are common appliances in our daily lives. With the development of society and the improvement of living standards, smart home appliances have become a consumption trend. According to HIS market forecasts, the number of households using smart home appliances in China will reach 28.32 million in 2025. At present, when using refrigerators, users often face the need to temporarily store and retrieve ingredients when cooking, which can easily lead to safety accidents and economic losses if they forget to close the refrigerator door. In addition, in the daily process of closing the refrigerator door, whether it is closed tightly is often easily overlooked, especially when there are elderly and children at home.
[0003] In view of this, it is necessary to improve the existing technology. Utility Model Content
[0004] The purpose of the utility model is to provide a refrigerator door state detection device, which aims to solve at least one of the technical problems existing in the above-mentioned prior art. To achieve the above-mentioned purpose, the technical solution adopted is as follows:
[0005] A refrigerator door state detection device comprises a controller, a box body and a door body hinged on one side of the box body, a Hall sensor is installed on the inner side of the door body, the Hall sensor is electrically connected to the controller, a fixed magnet is installed on the front side of the box body, the fixed magnet is used to provide a working magnetic field to the Hall sensor, when the door body is in the process of changing from closed to open, the working magnetic field strength provided by the fixed magnet will gradually weaken, the Hall sensor is used to convert the working magnetic field strength into an electrical signal value in real time, and transmit the electrical signal value to the controller, the strength of the working magnetic field is proportional to the size of the electrical signal value, the controller is preset with an electrical signal threshold and a time threshold, when the electrical signal value received by the main controller is less than the electrical signal threshold and the duration exceeds the time threshold, the controller sends a door not closed signal.
[0006] Preferably, when the door is closed, the Hall sensor is located directly in front of the fixed magnet.
[0007] Preferably, the electrical signal threshold is an electrical signal value corresponding to the working magnetic field strength when the door is in a closed state.
[0008] Preferably, the time threshold is any time between 30s and 180s.
[0009] Preferably, the controller includes a main control module, a receiving module, a signal sending module and a timing module.
[0010] Preferably, the device further comprises an alarm, which is electrically connected to the controller and is used to remind the user that the door is not closed.
[0011] Compared with the prior art, the utility model has the following beneficial effects:
[0012] The utility model discloses a refrigerator door state detection device. The Hall sensor of the device cooperates with a fixed magnet to determine whether the door is normally closed by detecting the strength of the working magnetic field, and then prompts the user through an alarm, thereby avoiding the phenomenon that the temperature in the refrigerator rises due to cold leakage caused by the door not being closed. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] In order to more clearly illustrate the technical solution of the utility model, the drawings required for use in the implementation mode will be briefly introduced below. Obviously, the drawings described below are only some implementation modes of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.
[0014] Figure 1 The utility model is a schematic diagram of the principle of detecting the state of a refrigerator door by the device.
[0015] Figure 2 This is a diagram showing the relationship between the positions of the Hall sensor and the fixed magnet during the opening process of the door body of the utility model.
[0016] In the figure: 1. Hall sensor; 2. Fixed magnet. DETAILED DESCRIPTION
[0017] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.
[0018] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.
[0019] like Figure 1 to Figure 2 As shown, a preferred embodiment of the utility model provides a refrigerator door status detection device, which includes a controller, a cabinet and a door, wherein the door is hinged to one side of the cabinet by a hinge, and the controller is installed on the top of the cabinet, and the controller includes a main control module, a receiving module, a signal sending module and a timing module.
[0020] A Hall sensor 1 is installed on the inner side of the door body near the edge. The Hall sensor 1 is electrically connected to the controller through a wire. The wire is buried in the foam layer of the box body. One end of the wire is connected to the Hall sensor 1, and the other end extends out of the box body, passes through the hinge, and is connected to the controller. A fixed magnet 2 is fixedly installed on the front side of the cabinet. Specifically, when the door body is in the closed state, the Hall sensor 1 is located directly in front of the fixed magnet 2. The function of the fixed magnet 2 is to provide a working magnetic field to the Hall sensor 1, and when the door body is in the process of closing and opening, that is, the relative distance between the Hall sensor 1 and the fixed magnet 2 gradually increases, the working magnetic field strength provided by the fixed magnet 2 will gradually weaken.
[0021] The Hall sensor 1 is used to convert the working magnetic field strength into an electrical signal value output in real time, and transmit the output electrical signal value to the controller, wherein the strength of the working magnetic field is proportional to the magnitude of the electrical signal value.
[0022] The controller is preset with an electric signal threshold and a time threshold, wherein the electric signal threshold is the electric signal value corresponding to the working magnetic field strength when the door is closed. The time threshold is any time between 30s and 180s. In the preferred embodiment of the present invention, the time threshold is set to 100s.
[0023] When the value of the electrical signal received by the main controller is equal to or greater than the electrical signal threshold, it indicates that the door is in a closed state. When the value of the electrical signal received by the main controller is less than the electrical signal threshold and the duration exceeds the time threshold, i.e. 100s, the controller sends a signal that the door is not closed.
[0024] Furthermore, the device also includes an alarm, which is installed on the top of the box body and is electrically connected to the controller to remind the user that the door is not closed.
[0025] To sum up, the embodiment of the utility model described in the invention is a refrigerator door status detection device, in which the Hall sensor cooperates with the fixed magnet, and determines whether the door is closed normally by detecting the strength of the working magnetic field, and then prompts the user through the alarm, thereby avoiding the phenomenon that the temperature inside the box rises due to cold leakage caused by the door not being closed.
[0026] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the utility model.
Claims
1. A refrigerator door state detection device, comprising a controller, a box body and a door body hinged on one side of the box body, characterized in that: A Hall sensor is installed on the inner side of the door body, and the Hall sensor is electrically connected to the controller. A fixed magnet is installed on the front side of the box body, and the fixed magnet is used to provide a working magnetic field to the Hall sensor. When the door body is in the process of changing from closing to opening, the working magnetic field strength provided by the fixed magnet will gradually weaken. The Hall sensor is used to convert the working magnetic field strength into an electrical signal value in real time, and transmit the electrical signal value to the controller. The strength of the working magnetic field is proportional to the size of the electrical signal value. The controller is preset with an electrical signal threshold and a time threshold. When the electrical signal value received by the main controller is less than the electrical signal threshold and the duration exceeds the time threshold, the controller sends a signal that the door is not closed.
2. A refrigerator door state detection device according to claim 1, characterized in that: When the door is closed, the Hall sensor is located directly in front of the fixed magnet.
3. The refrigerator door state detection device according to claim 1, characterized in that: The electric signal threshold is an electric signal value corresponding to the working magnetic field strength when the door is closed.
4. The refrigerator door state detection device according to claim 1, characterized in that: The time threshold is any time between 30s and 180s.
5. The refrigerator door state detection device according to claim 1, characterized in that: The controller includes a main control module, a receiving module, a signal sending module and a timing module.
6. The refrigerator door state detection device according to claim 1, characterized in that: The device also includes an alarm, which is electrically connected to the controller and is used to remind the user that the door is not closed.