CN111829272A

CN111829272A - Refrigerator door opening reminding device and method

Info

Publication number: CN111829272A
Application number: CN202010815466.2A
Authority: CN
Inventors: 朱忠浩; 张凯
Original assignee: Hefei Meiling Union Technology Co Ltd
Current assignee: Hefei Meiling Union Technology Co Ltd
Priority date: 2020-08-13
Filing date: 2020-08-13
Publication date: 2020-10-27
Anticipated expiration: 2040-08-13
Also published as: CN111829272B

Abstract

The invention discloses a refrigerator door opening reminding device and method, and relates to the technical field of refrigerators. The invention comprises a circular tube, a piston, a return spring, a limiting structure, a piston position detection device and an alarm prompter; the round pipe is a hard through hole round pipe with a smooth inner wall and is communicated with the air inside and outside the refrigerator; the piston is arranged in the circular tube and can move left and right in the circular tube; one end of the return spring is connected with the piston, and the other end of the return spring is connected with the outer side of the circular tube; the limiting structure is fixed in the circular tube; the piston position detection device is a microswitch, a photoelectric detection or a distance sensor; the alarm prompter is connected with the piston position detection device. The invention uses the difference of air pressure inside and outside the refrigerator to detect the position of the piston through the piston position detection device, thereby determining whether the refrigerator door is closed well, if the door is not closed well, the alarm prompter sends out audible and visual alarm prompt. The invention has simple principle, convenient manufacturing process, economy and practicability.

Description

Refrigerator door opening reminding device and method

Technical Field

The application relates to the technical field of refrigerators, in particular to a refrigerator door opening reminding device and method.

Background

The refrigerator is a device for preserving food by low temperature, in order to keep the low temperature state in the refrigerator body, the refrigerator body and the door arranged on the refrigerator body are in a closed state under the normal working state. The door seal magnetic strips are embedded around the frame of the box door, and the box body and the box door are closed by means of the close absorption of the door seal magnetic strips and the opening surface of the box body made of metal plates, so that the heat exchange between the inside and the outside of the box body is prevented.

However, when the user closes the door, the door is often "closed falsely" due to the door being pushed out of place, that is, the door is basically at the closed position, but the door seal magnetic stripe is not attracted to the box body. The phenomenon is not easy to be discovered by a user, so that the door seal leaks cold for a long time, the temperature in the box body rises, the temperature in the box body can not be ensured to meet the set requirement, and icing and condensation are easy to cause; in addition, the 'virtual closing' of the box door can also cause the compressor to be in a starting state for a long time, and huge waste of energy is caused.

In addition, after the refrigerator is used for a long time, the existing device cannot detect the damage and deformation of the doorframe or the door seal magnetic strip.

Disclosure of Invention

The invention designs a refrigerator door opening reminding device and method, which detect the position of a piston through a piston position detection device so as to determine whether a refrigerator door is closed well, and if the door is not closed well, an alarm prompter sends out an acousto-optic alarm prompt.

In order to solve the technical problems, the invention is realized by the following technical scheme:

the invention relates to a refrigerator door opening reminding device which comprises a round pipe, wherein the round pipe is a hard through hole round pipe with a smooth inner wall, is embedded in a refrigerator main body or a refrigerator door, and one end of the round pipe is communicated with air inside the refrigerator, while the other end is communicated with air outside the refrigerator; the piston is arranged in the circular tube, has good lubricating performance and can move left and right in the circular tube; one end of the return spring is connected with the piston, and the other end of the return spring is connected with the outer side of the circular tube; the limiting structure is fixed inside the circular tube and is a bulge for limiting, so that the piston is prevented from completely falling off the circular tube in the moving process; the piston position detection device is used for detecting whether the piston moves to a set position or not; and the alarm prompter is connected with the piston position detection device and gives out a prompt by an audible and visual alarm means.

Furthermore, the filter screens are installed at the outer portions of the two ends of the round pipe, so that dirt is prevented from entering the round pipe.

Further, the piston position detection device is a microswitch or photoelectric detection.

Further, the piston position detecting means is a distance sensor for quantitatively calculating a pressure difference between the inside and the outside of the refrigerator by measuring a moving distance of the piston.

Furthermore, the reset spring is provided with a force sensor, and the pressure difference between the inside and the outside of the refrigerator is quantitatively calculated by measuring the tension on the reset spring.

A refrigerator door opening reminding method comprises

If the refrigerator is in a normal working state and the refrigerator door is reliably closed, the air pressure in the refrigerator is smaller than the air pressure outside the refrigerator, the piston moves towards one end with lower air pressure under the pushing of the difference of the air pressure between the inside and the outside, and the piston position detection device detects that the piston is pushed to the other end by the difference of the air pressure, so that the refrigerator door is reliably closed.

If the refrigerator door is not closed reliably, the air inside and outside the refrigerator is communicated, the air pressure difference is zero, the piston is kept at the initial position, the piston position detection device detects that the piston is at the initial position, the refrigerator door is not closed reliably or the door seal magnetic stripe is damaged and deformed, and the alarm prompter sends out an audible and visual alarm prompt.

The invention has the following beneficial effects:

the invention judges whether the refrigerator is in the state of not closing the door or not according to the difference of the air pressure inside and outside the refrigerator, and has the advantages of simple device principle, convenient manufacturing process, economy and practicability.

The invention reminds when the refrigerator is not closed, thereby improving the promptness of reminding, reducing the huge waste of energy and having good use value.

Of course, it is not necessary for any product in which the invention is practiced to achieve all of the above-described advantages at the same time.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a schematic structural diagram of a door opening reminder for a refrigerator according to the present invention;

fig. 2 is a flowchart of a refrigerator door opening reminding method.

In the drawings, the components represented by the respective reference numerals are listed below:

100-refrigerator body or door body, 101-round tube, 102-filter screen, 103-piston, 104-limit structure, 105-reset spring, 106-piston position detection device and 107-alarm prompting device.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it is to be understood that the terms "inner", "outer", "upper", "lower", "left", "outer", "inner", and the like, indicate orientations or positional relationships, and are used merely to facilitate the description of the present invention and to simplify the description, but do not indicate or imply that the referenced components or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention.

Example 1

Referring to fig. 1, the present invention is a refrigerator door opening reminder, which includes a circular tube 101, a piston 103, a return spring 105, a limiting structure 104, a piston position detecting device 106, and an alarm indicator 107.

The round tube 101 is a hard through-hole round tube with a smooth inner wall, is embedded in the refrigerator main body or the refrigerator door 100, and one end of the round tube is communicated with the air inside the refrigerator while the other end is communicated with the air outside the refrigerator; the piston 103 is arranged inside the circular tube 101, has good lubricating performance and can move left and right in the circular tube 101; one end of a return spring 105 is connected with the piston 103, and the other end is connected with the outer side of the circular tube 101; the limiting structure 104 is fixed inside the circular tube 101, and the limiting structure 104 is a small bulge or other limiting structures for limiting, so that the piston 103 is prevented from completely falling out of the circular tube 101 in the moving process; the piston position detection device 106 is used for detecting whether the piston 103 moves to a set position; the alarm prompter 107 is connected with the piston position detection device 106, and when the piston 103 moves to a set position, the alarm prompter 107 gives out a prompt through an acousto-optic alarm means.

Wherein, the filter screen 102 is all installed to pipe 101 both ends outside, avoids the dirt to get into in the pipe 101.

The piston position detecting device 106 is a micro switch or a photoelectric detector.

As shown in fig. 2, the present invention is a method for reminding a user to open a door of a refrigerator, wherein the left side is the inside of the refrigerator, and the right side is the outside of the refrigerator. Comprises that

When the refrigerator door is reliably closed, the air pressure of the air in the refrigerator is reduced due to the action of expansion with heat and contraction with cold, the air pressure of the left side of 100 is smaller than that of the right side, the atmospheric pressure borne by the left side of the piston 103 is smaller than that of the right side, the piston 103 moves leftwards under the left-right pressure difference until the left-right pressure difference is equal to the tension of the reset spring 105, and at the moment, the micro switch 106 is separated. The alarm prompter 107 detects that the microswitch 106 is not triggered, i.e. it indicates that the refrigerator door is reliably closed.

When the refrigerator door is not reliably closed or the door seal magnetic strip is damaged and deformed, air flows and air pressure on the inner side and the outer side of the refrigerator are equal, atmospheric pressure on the left side and the right side of the piston 103 is equal, the piston 103 is pulled to the rightmost side until reaching a limiting position under the pulling of the return spring 105, and the micro switch 106 is triggered after reaching the limiting position. The alarm prompter 107 can send out an audible and visual prompt after detecting that the microswitch 106 is triggered, which indicates that the refrigerator door is not reliably closed or the door seal magnetic strip is damaged and deformed, and a customer can close the refrigerator door or maintain the damaged magnetic strip in time.

Example 2

Embodiment 1 only provides a qualitative method for detecting whether the refrigerator door is reliably closed or whether the door seal magnetic strip is damaged and deformed, and if the pressure difference between the inside and the outside needs to be calculated quantitatively, the micro switch in embodiment 1 can be replaced by a distance sensor to measure the moving distance of the piston 103, or a force sensor is added on the limit structure to measure the pulling force on the return spring 105. And after data of the moving distance of the piston or the tensile force of the spring are obtained, the data and a calibration value are calculated to obtain the internal and external pressure difference, so that the damage and deformation degree of the door seal magnetic strip is further evaluated.

In the description herein, references to the description of "one embodiment," "an example," "a specific example" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The preferred embodiments of the invention disclosed above are intended to be illustrative only. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims

1. The utility model provides a refrigerator reminding device that opens door which characterized in that: comprises that

The refrigerator comprises a round pipe (101), wherein the round pipe (101) is a hard through hole round pipe with a smooth inner wall, one end of the round pipe is communicated with air inside the refrigerator, and the other end of the round pipe is communicated with air outside the refrigerator;

the piston (103) is installed inside the circular tube (101), and the piston (103) moves left and right in the circular tube (101);

one end of the return spring (105) is connected with the piston (103), and the other end of the return spring (105) is connected with the outer side of the circular tube (101);

the limiting structure (104), the limiting structure (104) is fixed inside the circular tube (101);

piston position detection means (106), the piston position detection means (106) being for detecting whether the piston is moved to a set position;

and the alarm prompter (107), wherein the alarm prompter (107) is connected with the piston position detection device (106).

2. The door opening reminder for a refrigerator according to claim 1, wherein the circular tube (101) is embedded in a refrigerator body or a refrigerator door (100).

3. The refrigerator door opening reminding device according to claim 1, wherein a filter screen (102) is installed outside both ends of the circular tube (101).

4. The refrigerator door opening reminding device according to claim 1, wherein the piston position detecting device (106) is a micro switch or a photoelectric detector.

5. The refrigerator door opening reminder according to claim 1, wherein the piston position detection device (106) is a distance sensor.

6. The refrigerator door opening reminder according to claim 1, wherein the return spring (105) is provided with a pressure sensor for quantitatively calculating pressure.

7. The refrigerator door opening reminding device according to claim 1, wherein the limiting structure (104) is a protrusion.

8. The refrigerator door opening reminding method based on any one of claims 1 to 7, characterized by comprising the following steps:

if the refrigerator is in a normal working state and the refrigerator door is reliably closed, the air pressure in the refrigerator is smaller than the air pressure outside the refrigerator, the piston (103) moves towards one end with lower air pressure under the pushing of the difference of the internal air pressure and the external air pressure, and the piston position detection device (106) detects that the piston (103) is pushed to the other end from the initial position by the difference of the air pressure, so that the refrigerator door is reliably closed;

if the refrigerator door is not closed reliably, the air inside and outside the refrigerator is communicated, the air pressure difference is zero, the piston (103) is kept at the initial position, the piston position detection device (106) detects that the piston (103) is at the initial position, it is judged that the refrigerator door is not closed reliably or a door seal magnetic strip is damaged and deformed, and the alarm prompter (107) sends out an audible and visual alarm prompt.