Refrigerator

Abstract

The utility model provides a refrigerator and belongs to the technical field of refrigerators. By arranging the door opening and closing detection device, the door opening and closing state of the door body can be detected. The human body induction device is arranged on the lower frame of the upper door body, so that whether a person exists below the upper door body or not can be detected when the upper door body is in an open state. The controller is arranged to be connected with the door opening and closing detection device, the human body induction device and the alarm device, so that the alarm device can be controlled to give an alarm to remind a user that the upper door body is in the open state when it is detected that a person exists below the upper door body and the duration of the open state of the upper door body exceeds the first duration; when the upper door body is in an open state, a user bends down or squats to use the lower chamber of the refrigerator, and possibly forgets or does not pay attention to the open state of the upper door body after use, the alarm device gives an alarm to remind the user, so that the accident that the user collides with the upper door body can be prevented in a targeted manner.

Description

Technical Field

[0001] The utility model relates to the technical field of refrigerators, and mainly relates to a refrigerator. Background Art

[0002] With the development of economy and the improvement of people's living standard, refrigerators have become an indispensable household appliance in people's daily life. Refrigerators mainly reduce the temperature of food itself and delay the deterioration of food, so as to achieve the effect of long-term storage.

[0003] A refrigerator generally includes a box body and a door body, wherein an upper cavity and a lower cavity are formed in the box body and spaced apart from each other; the door body includes an upper door body and a lower door body, wherein the upper door body is used to open and close the upper cavity, and the lower door body is used to open and close the lower cavity.

[0004] In order to prevent the user from forgetting to close the refrigerator door after opening it, which may cause cold air leakage, current refrigerator products will set a default door opening alarm duration. When the refrigerator door is opened for a period of time that reaches the door opening alarm duration, the door opening alarm will sound, prompting the user to close the door. However, in the process of implementing the present invention, the inventors found that the prior art has at least the following problems: when the user opens the upper door of the refrigerator, it is not closed or not closed properly, so that the upper door is in an open state. At this time, the user bends over or squats to use the lower compartment. After use, the user may forget or fail to notice that the upper door is in an open state. If he stands up and looks up, it is very easy to touch the upper door. In serious cases, it may even hit the corner of the door, causing serious consequences. Utility Model Content

[0005] The utility model aims to provide a refrigerator which, by arranging a human body sensing device on the lower frame of an upper door body, can detect that there is a person under the upper door body, and when the upper door body is in an open state for a continuous period exceeding a first period, controls an alarm device to sound an alarm, thereby specifically preventing accidents in which a user collides with the upper door body.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] One aspect of the present application provides a refrigerator, comprising:

[0008] A box body, wherein an upper chamber and a lower chamber are formed in the box body.

[0009] The door body comprises an upper door body and a lower door body, wherein the upper door body is used to open and close the upper cavity, and the lower door body is used to open and close the lower cavity;

[0010] A door opening and closing detection device is configured to detect the door opening and closing state of the door body;

[0011] A human body sensing device is arranged on the lower frame of the upper door body, and the human body sensing device is configured to detect whether there is a person under the upper door body when the upper door body is in an open state;

[0012] An alarm device, disposed on the box, and configured to issue a prompt alarm;

[0013] A controller is connected to the door opening and closing detection device, the human body sensing device and the alarm device. The controller is configured to control the alarm device to sound an alarm when it detects that there is a person under the upper door body and the duration of the upper door body being in the open state exceeds a first duration.

[0014] In some embodiments of the present application, the refrigerator further comprises:

[0015] An angle sensor, disposed on the upper door body and connected to the controller, wherein the angle sensor is configured to detect an opening angle of the upper door body;

[0016] Correspondingly, the controller is also configured to control the alarm device to sound an alarm when it is detected that there is a person under the upper door body, the duration of the upper door body being in the open state exceeds a first duration, and the opening angle of the upper door body is within a preset angle range.

[0017] In some embodiments of the present application, the refrigerator further comprises:

[0018] An automatic door closing component connected to the controller, the automatic door closing component being configured to control the upper door body to close based on a door closing instruction sent by the controller;

[0019] Correspondingly, the controller is further configured to send a door closing instruction to the automatic door closing component when the accumulated time after the alarm device issues an alarm exceeds a second time.

[0020] In some embodiments of the present application, the door opening and closing detection device includes a first detection device, which is disposed in the upper cavity and is configured to detect the door opening and closing state of the upper door body.

[0021] In some embodiments of the present application, the door opening and closing detection device further includes a second detection device, which is disposed in the lower cavity and configured to detect the door opening and closing state of the lower door body.

[0022] In some embodiments of the present application, the alarm device includes a light alarm module, which is arranged on the lower frame of the upper door body, and the light alarm module is configured to emit a flashing light to give an alarm.

[0023] In some embodiments of the present application, the alarm device includes a buzzer alarm module, which is disposed in the box, and the buzzer alarm module is configured to emit sound and light signals to give an alarm.

[0024] In some embodiments of the present application, the refrigerator further comprises:

[0025] A display panel is arranged on the outer surface of the door body, the display panel is communicatively connected with the controller, and the display panel includes the buzzer alarm module.

[0026] In some embodiments of the present application, the alarm device further includes a voice module disposed in the housing, and the voice module is configured to emit a prompt voice to issue an alarm.

[0027] In some embodiments of the present application, the human body sensing device includes a human body infrared sensor.

[0028] Beneficial effects:

[0029] The present application discloses a refrigerator, which can detect the door opening and closing state of the door body by setting a door opening and closing detection device. By setting a human body sensing device on the lower frame of the upper door body, it is possible to detect whether there is a person under the upper door body when the upper door body is in an open state. By setting a controller connected to the door opening and closing detection device, the human body sensing device and the alarm device respectively, it is possible to control the alarm device to sound an alarm when it is detected that there is a person under the upper door body, and when the duration of the upper door body being in the open state exceeds a first duration, to remind the user that the upper door body is in an open state. When the upper door body is in an open state, the user bends over or squats to use the lower compartment of the refrigerator, and may forget or fail to notice that the upper door body is in an open state after use, the alarm device can sound an alarm to remind the user, thereby preventing the user from colliding with the upper door body in a targeted manner. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a three-dimensional schematic diagram of a refrigerator according to an embodiment of the present application.

[0031] Figure 2 yes Figure 1 Schematic diagram of a refrigerator with an upper door opened.

[0032] Figure 3 yes Figure 1 Schematic diagram of a refrigerator with the lower door opened.

[0033] Figure 4 yes Figure 1 Schematic diagram of a refrigerator with both the upper door and the lower door opened.

[0034] Figure 5 This is a structural block diagram of the first part of a refrigerator provided in one embodiment of the present application.

[0035] Figure 6 yes Figure 1 Another schematic diagram of the refrigerator with the upper door opened;

[0036] Figure 7 yes Figure 1 A first structural schematic diagram of a refrigerator.

[0037] Figure 8 yes Figure 1 A second structural schematic diagram of a refrigerator.

[0038] Fig. 9 This is a structural block diagram of the second part of the refrigerator provided in one embodiment of the present application.

[0039] Fig.10 yes Figure 1 Another schematic diagram of a refrigerator with the upper door opened.

[0040] The corresponding relationship between the reference numerals and the component names is as follows:

[0041] Box body 1; upper cavity 11; lower cavity 12; storage room 10; door body 2; upper door body 21; lower door body 22; door opening and closing detection device 3; first detection device 31; second detection device 32; human body sensing device 4; lower frame 211; alarm device 5; light alarm module 51; buzzer alarm module 52; voice module 53; controller 6; display panel 7; angle sensor 8; automatic door closing component 9. DETAILED DESCRIPTION

[0042] The utility model provides a refrigerator. In order to make the purpose, technical solution and effect of the utility model clearer and more specific, the utility model is further described in detail with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the protection scope of the utility model.

[0043] In the description of the present invention, it is necessary to understand that the terms "upper", "lower", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0044] In the description of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" 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, an electrical connection, or mutual communication; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0045] In order to prevent the user from forgetting to close the refrigerator door after opening it, which may cause cold air leakage, current refrigerator products will set a default door opening alarm duration. When the refrigerator door is opened for a continuous period of time that reaches the door opening alarm duration, the door opening alarm sound will sound, prompting the user to close the door. However, in the process of implementing the present invention, the inventor found that the prior art has at least the following problems: when the user opens the upper door of the refrigerator, it is not closed or not closed properly, so that the upper door is in an open state. At this time, the user bends over or squats to use the lower compartment. After use, the user may forget or fail to notice that the upper door is in an open state. When he stands up and looks up, it is very easy to hit the upper door, and even hit the corner of the door, causing serious consequences. Or when the user is using the lower compartment, family members also join in using the upper compartment; and the user does not know that the upper compartment door is open but bends over under the refrigerator to perform other activities, etc., which may cause the aforementioned injury accident of colliding with the upper door.

[0046] Based on this, an embodiment of the present application provides a refrigerator. By setting a human body sensing device on the lower frame of the upper door body, it can detect that the upper door body is in an open state for a period of time exceeding a first period of time and there is someone under the upper door body, and control the alarm device to sound an alarm, thereby specifically preventing accidents in which users collide with the upper door body.

[0047] Figure 1 It is a three-dimensional schematic diagram of a refrigerator according to an embodiment of the present application. Figure 2 yes Figure 1 Schematic diagram of a refrigerator with an upper door opened. Figure 3 yes Figure 1 Schematic diagram of a refrigerator with the lower door opened. Figure 4 yes Figure 1 Schematic diagram of a refrigerator with both the upper door and the lower door opened.

[0048] See also Figures 1 to 4 As shown, the refrigerator provided by the embodiment of the utility model may include a box body 1. The box body 1 may adopt a hollow structure such as a rectangular parallelepiped. The box body 1 forms an outer shell of the refrigerator. It should be noted that the box body 1 may also adopt a hollow shell structure of other shapes.

[0049] See also Figure 1 As shown, in some embodiments, an upper cavity 11 and a lower cavity 12 arranged at intervals may be formed inside the box body 1. The upper cavity 11 may be configured to form a plurality of storage chambers 10, and the lower cavity 12 may be configured to form a plurality of storage chambers 10.

[0050] In some embodiments, the upper chamber 11 can be used as an independent storage space, such as a freezer, a refrigerator, and a temperature-changing chamber, etc., to meet different refrigeration requirements such as freezing, refrigeration, and temperature-changing according to different types of food, and store items that need to be refrigerated or frozen. The lower chamber 12 can be used as an independent storage space, such as a freezer, a refrigerator, and a temperature-changing chamber, etc., to meet different refrigeration requirements such as freezing, refrigeration, and temperature-changing according to different types of food, and store items that need to be refrigerated or frozen.

[0051] In some embodiments, the refrigerator may include a box liner, an upper cavity 11 may be formed in the box liner, and a lower cavity 12 may be formed in the box liner.

[0052] See also Figure 2-Figure 4 As shown, in some embodiments, the refrigerator may include a door body 2, and the door body 2 may include an upper door body 21 and a lower door body 22. The upper door body 21 may be used to open and close the upper cavity 11, and the lower door body 22 may be used to open and close the lower cavity 12. The upper door body 21 may be hinged to the front side of the box body 1 to open and close the upper cavity 11. The lower door body 22 may be hinged to the front side of the box body 1 to open and close the lower cavity 12.

[0053] It should be noted that a plurality of door bodies 2 can be provided. The door bodies 2 can be provided one by one with the storage chambers 10. Multiple door bodies 2 can open and close one storage chamber 10 at the same time. One door body 2 can also open and close multiple storage chambers 10 at the same time.

[0054] Reference Figure 5 , Figure 5 1 is a block diagram of the first part of the structure of the refrigerator provided by an embodiment of the present application. Figure 5 As shown, Figure 1 The refrigerator shown may include a door opening and closing detection device 3, a human body sensing device 4, an alarm device 5 and a controller 6. The door opening and closing detection device 3, the human body sensing device 4 and the alarm device 5 are all connected to the controller 6.

[0055] In some embodiments, Figure 1 The refrigerator shown may also include a door opening and closing detection device 3, which is connected to the door body 2 of the refrigerator. The door opening and closing detection device 3 can be used to detect the door opening and closing actions of the door body 2, and generate corresponding door opening signals and door closing signals. The door opening and closing detection device 3 can be connected to the controller 6, so that the door opening and closing detection device 3 can send the generated door opening signal or door closing signal to the controller 6.

[0056] Reference Figure 2 In some embodiments, the door opening and closing detection device 3 may include a first detection device 31. The first detection device 31 may be disposed in the upper cavity 11. The first detection device 31 can detect the door opening and closing state of the upper door body 21.

[0057] Exemplarily, the first detection device 31 may be a magnetic induction switch device. The magnetic induction switch device includes a magnetic induction device and a trigger device. Among them, the magnetic induction device may include a magnet and an iron core. The trigger device may include an induction coil and an induction switch. The induction coil is wound around the magnet and the iron core to form a magnetic field. When the upper door 21 of the refrigerator is closed, the magnetic field lines formed by the magnet and the iron core will cut the induction coil to generate an induced electromotive force. The induced electromotive force passes through the induction switch, which will cause the induction switch to be in a closed state. When the upper door 21 of the refrigerator is opened, the magnetic field lines between the magnet and the iron core are no longer closed, and the magnetic field in the induction coil will also decrease, thereby causing the induced electromotive force to decrease or disappear. This change will cause the induction switch to be in an open state. Thus, the switch state of the upper door 21 of the refrigerator can be detected by the induction switch. Specifically, when the upper door 21 is closed, that is, in the closed state, the induction switch is in a closed state and the circuit is normally switched on and off. When the upper door 21 is opened, that is, in the open state, the induction switch is in an open state and the circuit is interrupted.

[0058] In some embodiments, the first detection device 31 may be a door open / close state sensor. The first detection device 31 may also be a detection switch, such as a magnetic switch, a Hall switch, etc. The first detection device 31 may also be a light sensor. The first detection device 31 is not specifically limited in the present embodiment of the application, and it is sufficient to detect the open / close state of the upper door body 21.

[0059] Reference Figure 3 In some embodiments, the door opening and closing detection device 3 may include a second detection device 32. The second detection device 32 may be disposed in the lower cavity 12. The second detection device 32 can detect the door opening and closing state of the lower door body 22.

[0060] Also exemplarily, the second detection device 32 can be a magnetic induction switch device. The magnetic induction switch device includes a magnetic induction device and a trigger device. Among them, the magnetic induction device may include a magnet and an iron core. The trigger device may include an induction coil and an induction switch. The induction coil is wound around the magnet and the iron core to form a magnetic field. When the lower door 22 of the refrigerator is closed, the magnetic field lines formed by the magnet and the iron core will cut the induction coil to generate an induced electromotive force. The induced electromotive force passes through the induction switch, which will cause the induction switch to be in a closed state. When the lower door 22 of the refrigerator is opened, the magnetic field lines between the magnet and the iron core are no longer closed, and the magnetic field in the induction coil will also decrease, resulting in a decrease or disappearance of the induced electromotive force. This change will cause the induction switch to be in an open state. Thus, the switch state of the lower door 22 of the refrigerator can be detected by the induction switch. Specifically, when the lower door 22 is closed, that is, in the closed state, the induction switch is in a closed state and the circuit is normally switched on and off. When the lower door 22 is opened, that is, in the open state, the induction switch is in an open state and the circuit is interrupted.

[0061] Similarly, in some embodiments, the second detection device 32 may be a door open / close state sensor. The second detection device 32 may also be a detection switch, such as a magnetic switch, a Hall switch, etc. The second detection device 32 may also be a light sensor. The present application does not specifically limit the second detection device 32.

[0062] Reference Figure 5 , Figure 1 The refrigerator shown may also include a human body sensing device 4. Figure 6 The human body sensing device 4 is arranged on the lower frame 211 of the upper door body 21. The human body sensing device 4 can detect whether there is a person under the upper door body 21 when the upper door body 21 is in an open state. The human body sensing device 4 can emit light downward and receive reflected light to detect whether there is a person under the upper door body 21.

[0063] In some embodiments, the human body sensing device 4 may include a transmitter and a receiver, wherein the transmitter and the receiver may be two separate components or may be a component combined into one.

[0064] In some embodiments, the human body sensing device 4 may include a human body infrared sensor. The human body sensing device 4 may also include a radar sensor.

[0065] Exemplarily, the human body sensing device 4 may include a voltage-stabilized power supply module, a controlled display device, an infrared transmitting module, and an infrared receiving module. The voltage-stabilized power supply module is connected to the infrared transmitting module and the infrared receiving module, respectively. The controlled display device includes a signal control unit and a signal receiving unit, the signal control unit is connected to the infrared transmitting module, and the signal control unit is used to control the infrared transmitting module to emit infrared light of a certain intensity. The signal receiving unit is connected to the infrared receiving module, and the infrared receiving module is used to receive the infrared light reflected by the human body and convert it into an electrical signal and output it to the signal receiving unit. The electrical signal is used to control the on and off of the controlled display device.

[0066] The infrared emission module includes a connected infrared light emitting diode and a driving unit, and the driving unit is connected to the signal control unit of the controlled display device. Under the control of the control signal sent by the signal control unit, the driving unit provides a pulse voltage to the infrared light emitting diode, so that the infrared light emitting diode emits infrared light of a certain intensity. The control signal is a pulse width modulation signal with a certain duty cycle of 38kHz frequency generated by the controlled display device, which is used to control the on and off of the driving unit, so that the infrared light emitting diode emits infrared light of different intensities. By setting different duty cycle values ​​of the pulse width modulation signal, that is, adjusting the on time of the driving unit, the infrared light emission intensity of the infrared light emitting diode is changed to achieve dynamic adjustment of the detection distance. By setting different intermittent working times of the pulse width modulation signal, the interference of infrared light in the external environment to the utility model can be eliminated, the working reliability can be improved, and the frequency of false operation can be reduced.

[0067] The infrared receiving module includes a phototransistor matched with the infrared light emitting diode of the infrared transmitting module. The phototransistor is connected to the signal receiving unit of the controlled display device. The phototransistor is used to receive the infrared light reflected by the human body and convert it into an electrical signal and output it to the signal receiving unit. The state of the electrical signal is used to determine whether the human body is approaching, thereby controlling the on and off of the controlled display device. The phototransistor will trigger an action only when it receives the infrared light reflected by the human body. When the phototransistor receives the infrared light, the phototransistor is turned on and outputs a low-level signal. When the phototransistor does not receive the infrared light, the phototransistor is cut off and outputs a high-level signal. If the human body does not move within the detection range of the utility model, the phototransistor will be turned on all the time. The high-level signal or the low-level signal is transmitted to the signal receiving unit to realize the control of the on and off of the controlled display device.

[0068] The voltage-stabilized power supply module includes a linear voltage stabilizer and a filter capacitor. The voltage-stabilized power supply module is used to provide a stable and clean DC working power supply and a reference voltage for the infrared transmitting module and the infrared receiving module.

[0069] The controlled display device is one or more of a digital tube, an LED lamp, a liquid crystal screen, an LED screen, and an OLED screen of the refrigerator.

[0070] After the controlled display device goes into sleep mode, if a human body enters the detection range of the human body sensing device 4, the controlled display device can be automatically turned on; if a human body leaves the detection range of the human body sensing device 4, the controlled display device can be automatically turned off. No physical button operation is required during the whole process.

[0071] In some embodiments of the present application, the human body sensing device 4 is controlled to start working for detection only when the upper door body 21 is opened, and the human body sensing device 4 does not work when the upper door body 21 is closed, thereby reducing the energy consumption of the human body sensing device 4.

[0072] Specifically, when the upper door body 21 is opened, the door opening and closing detection device 3 generates a corresponding door opening signal and sends it to the controller 6. After the controller 6 receives the door opening signal sent by the door opening and closing detection device 3, the controller 6 can control the human body sensing device 4 to start working to detect whether there is human activity under the upper door body 21. When the upper door body 21 is closed, the door opening and closing detection device 3 generates a corresponding door closing signal and sends it to the controller 6. After the controller 6 receives the door closing signal sent by the door opening and closing detection device 3, the human body sensing device 4 does not work. Therefore, by controlling the human body sensing device 4 to work only when the upper door body 21 is in the open state, the energy consumption of the human body sensing device 4 can be effectively reduced.

[0073] Reference Figure 5 , Figure 1 The refrigerator shown may further include an alarm device 5. The alarm device 5 may issue a prompt alarm. The alarm device 5 is connected to the controller 6, so that the alarm device 5 may issue a prompt alarm based on a control instruction sent by the controller 6. Specifically, when the alarm device detects that the duration of the upper door body 21 being in the open state exceeds a first duration and there is a person under the upper door body 21, the alarm may issue an alarm to remind the user that the upper door body 21 is in the open state, so as to avoid the user from colliding with the upper door body 21.

[0074] Specifically, when the upper door body 21 is opened, the door opening and closing detection device 3 generates a corresponding door opening signal and sends it to the controller 6. After the controller 6 receives the door opening signal sent by the door opening and closing detection device 3, the controller 6 can control the human body sensing device 4 to start working to detect whether there is human activity under the upper door body 21. When the human body sensing device 4 detects human activity under the upper door body 21, it will send a sensing signal to the controller 6. After receiving the sensing signal sent by the human body sensing device 4, the controller 6 starts timing. When the accumulated timing exceeds the first time length, that is, when it is detected that there is someone under the upper door body 21, and the duration of the upper door body being in the door opening state exceeds the first time length, the controller 6 sends an alarm control instruction to the alarm device 5. After receiving the alarm control instruction sent by the controller 6, the alarm device 5 will issue a prompt alarm to remind the user. Therefore, when the upper door 21 is in the open state and the user bends over or squats to use the lower compartment of the refrigerator, and after use, he may forget or fail to notice that the upper door is in the open state, the alarm device will sound an alarm to remind the user, thereby specifically preventing accidents in which the user collides with the upper door.

[0075] It should be noted that in the embodiment of the present application, the first duration can be set and adjusted according to actual conditions, and the embodiment of the present application does not limit the first duration. For example, the first duration can be set and adjusted based on the refrigerator usage habits of different users. That is, different users have different refrigerator usage habits, and the set first duration can be different.

[0076] It should be noted that, in the embodiment of the present application, the accumulated duration is the duration during which the upper door body 21 is in the open state and there are continuous human activities under the upper door body.

[0077] It should be noted that in the embodiment of the present application, the alarm device 5 can issue an alarm prompt by displaying a preset light information through its configured LED light. The alarm device 5 can also issue an alarm prompt by playing a preset voice message through its configured voice module. The alarm device 5 can also issue an alarm prompt by combining displaying an LED light and playing a voice.

[0078] In some embodiments, reference Figure 6 The alarm device 5 may include a light alarm module 51. The light alarm module 51 is disposed on the lower frame 211 of the upper door body 21. The light alarm module 51 is configured to emit a flashing light for alarm.

[0079] In the embodiment of the present application, the controller 6 is connected to the light alarm module 51. When it is detected that there is a person under the upper door body 21 and the duration of the upper door body 21 being in the open state exceeds the first duration, the controller 6 will send an alarm control instruction to the light alarm module 51. After receiving the alarm control instruction sent by the controller 6, the light alarm module 51 will control the flashing light to remind the user that the upper door body 21 is in the open state.

[0080] In some embodiments, the controller 6 may provide a light warning module 51 which may be a colored LED light.

[0081] In some embodiments, reference Figure 7 , the alarm device 5 may include a buzzer alarm module 52. The buzzer alarm module 52 may be arranged in the box body 1, such as in the upper cavity 11 or the lower cavity 12, or on the upper door body 21 or the lower door body 22. The present application does not limit the specific location of the buzzer alarm module 52. The buzzer alarm module 52 is configured to emit sound and light signals for alarm.

[0082] In the embodiment of the present application, the controller 6 is connected to the buzzer alarm module 52. When it is detected that there is a person under the upper door body 21 and the duration of the upper door body 21 being in the open state exceeds the first duration, the controller 6 will send an alarm control instruction to the buzzer alarm module 52. After receiving the alarm control instruction sent by the controller 6, the buzzer alarm module 52 will control the emission of sound and light signals to alarm, so as to remind the user that the upper door body 21 is in the open state.

[0083] In some embodiments, reference Figure 7 , Figure 1 The refrigerator shown may also include a display panel. The display panel 7 may be arranged on the outer surface of the door body 2, such as the outer surface of the upper door body 221, or the outer surface of the lower door body 22. The display panel 7 is connected to the controller 6 for communication, and the display panel 7 includes a buzzer alarm module 52. In the embodiment of the present application, by arranging the buzzer alarm module 52 in the display panel 7, the arrangement space of the buzzer alarm module 52 can be saved.

[0084] In some embodiments, reference Figure 8 , the alarm device 5 may include a voice module 53. The voice module 53 may be disposed in the box body 1, such as in the upper cavity 11 or the lower cavity 12, or on the upper door body 21 or the lower door body 22. The present application does not limit the specific location of the voice module 53. The voice module 53 is configured to emit a prompt voice to alarm.

[0085] In the embodiment of the present application, the controller 6 is connected to the voice module 53. When it is detected that there is a person under the upper door body 21 and the duration of the upper door body 21 being in the open state exceeds the first duration, the controller 6 will send an alarm control instruction to the voice module 53. After receiving the alarm control instruction sent by the controller 6, the voice module 53 will control the issuance of a preset voice prompt information to alarm, so as to remind the user that the upper door body 21 is in the open state.

[0086] It should be noted that the voice module 53 may also be disposed in the display panel 7 , thereby saving the installation space of the voice module 53 .

[0087] In some embodiments, reference Fig. 9 , Figure 1 The refrigerator shown may include an angle sensor 8 in addition to the door opening and closing detection device 3, the human body sensing device 4, the alarm device 5 and the controller 6. The door opening and closing detection device 3, the human body sensing device 4, the alarm device 5 and the angle sensor 8 are all connected to the controller 6. Fig.10 The angle sensor 8 may be disposed on the upper door body 21 , and the angle sensor 8 is configured to detect an opening angle of the upper door body 21 .

[0088] In the embodiment of the present application, considering that the upper door body 21 is in a fully open state, or the opening of the upper door body 21 is close to the closed state, the user will not collide with the upper door body 21 when standing up from a bent or squatting state. Therefore, when it is detected that the upper door body 21 is in a fully open state, or the opening of the upper door body 21 is close to the closed state, the controller 6 does not need to control the alarm device 5 to sound an alarm. In other words, the controller 6 controls the alarm device 5 to sound an alarm only when it is detected that there is a person under the upper door body 21, and the duration of the upper door body 21 being in the open state exceeds the first duration, and the opening angle of the upper door body 21 is within the preset angle range. Among them, the preset angle range can be set and adjusted according to actual conditions, and the preset angle range can be a range greater than the first opening but less than the second opening, wherein the first opening is the lower limit of the opening (i.e., the minimum opening value) at which the user will not collide with the upper door body when changing from a bending or squatting posture to a standing posture, and the second opening is the upper limit of the opening (i.e., the maximum opening value) at which the user will not collide with the upper door body when changing from a bending or squatting posture to a standing posture.

[0089] In the embodiment of the present application, when the upper door body 21 is opened, the door opening and closing detection device 3 generates a corresponding door opening signal and sends it to the controller 6. After the controller 6 receives the door opening signal sent by the door opening and closing detection device 3, the controller 6 can control the human body sensing device 4 to start working to detect whether there is human activity under the upper door body 21. The angle sensor 8 detects the door opening angle of the upper door body 21 and sends the detection result to the controller 6. When the human body sensing device 4 detects human activity under the upper door body 21, it sends a sensing signal to the controller 6. After receiving the sensing signal sent by the human body sensing device 4, the controller 6 will further determine whether the door opening angle of the upper door body 21 is within the preset angle range. If it is within the preset angle range, the timing will start. When the accumulated time exceeds the first time length, that is, when it is detected that there is a person under the upper door body 21, and the duration of the upper door body being in the open state exceeds the first time length, and the opening angle of the upper door body 21 is within the preset angle range, the voice module 53 sends an alarm control instruction to the alarm device 5, and the alarm device 5 will issue a prompt alarm to remind the user after receiving the alarm control instruction sent by the controller 6. Therefore, when the upper door body is in the open state, and the user bends over or squats to use the lower compartment of the refrigerator, and may forget or fail to notice that the upper door body is in the open state after use, the alarm device can issue an alarm to remind the user, thereby preventing the user from colliding with the upper door body in a targeted manner.

[0090] In some embodiments, reference Fig. 9 , Figure 1 The refrigerator shown may include not only a door opening and closing detection device 3, a human body sensing device 4, an alarm device 5, a controller 6 and an angle sensor 8, but also an automatic door closing component 9. The door opening and closing detection device 3, the human body sensing device 4, the alarm device 5, the angle sensor 8 and the automatic door closing component 9 are all connected to the controller 6. Fig.10 The automatic door closing component 9 can be arranged between the upper door body 21 and the box body 1, and the automatic door closing component 9 is configured to control the closing of the upper door body 21 based on the door closing instruction sent by the controller 6.

[0091] In the embodiment of the present application, considering the situation that if the user squats down to tidy up the lower chamber 12 of the refrigerator, it takes a long time. After the alarm is issued by the alarm device 5, the user does not manually close the upper door body 21, but the alarm will be turned off or the alarm will stop automatically. After a period of time, the user may forget that the upper door body 21 is in an open state, which may cause a head-on accident when standing up. Therefore, the embodiment of the present application also provides an automatic door closing component 9, which can control the upper door body 21 to close based on the door closing instruction sent by the controller 6. Specifically, when it is detected that there is a person under the upper door body 21, and the duration of the upper door body 21 in the open state exceeds the first duration, and the opening angle of the upper door body 21 is within the preset angle range, the controller 6 controls the alarm device 5 to issue an alarm. Or when it is detected that there is a person under the upper door body 21, and the duration of the upper door body 21 in the open state exceeds the first duration, the controller 6 controls the alarm device 5 to issue an alarm. The alarm issued at this time may be turned off by the user or will be automatically turned off after the preset duration. In order to prevent the user from forgetting that the upper door body 21 is in the open state again after the alarm is issued for a period of time, resulting in an accident of standing up and hitting the head, the controller 6 will start timing after the alarm device 5 issues an alarm. When the accumulated time exceeds the second time, the controller 6 can send a closing command to the automatic door closing component 9. After receiving the closing command sent by the controller 6, the automatic door closing component 9 will control the upper door body 21 to close.

[0092] It should be noted that in the embodiment of the present application, the second time length can be set and adjusted according to actual conditions, and the embodiment of the present application does not limit the second time length. The second time length can be set to the longest time that the refrigerator door is in the open state.

[0093] In the embodiment of the present application, when the upper door body 21 is opened, the door opening and closing detection device 3 generates a corresponding door opening signal and sends it to the controller 6. After the controller 6 receives the door opening signal sent by the door opening and closing detection device 3, the controller 6 can control the human body sensing device 4 to start working to detect whether there is human activity under the upper door body 21. The angle sensor 8 detects the door opening angle of the upper door body 21 and sends the detection result to the controller 6. When the human body sensing device 4 detects that there is human activity under the upper door body 21, it will send a sensing signal to the controller 6. After receiving the sensing signal sent by the human body sensing device 4, the controller 6 will further determine whether the door opening angle of the upper door body 21 is within the preset angle range. If it is within the preset angle range, the timing will start. When the accumulated timing exceeds the first time length, that is, when it is detected that there is a person under the upper door body 21, and the duration of the upper door body in the door opening state exceeds the first time length, and the door opening angle of the upper door body 21 is within the preset angle range, the alarm control instruction is sent to the alarm device 5. After receiving the alarm control instruction sent by the controller 6, the alarm device 5 will issue a prompt alarm to remind the user. At the same time, after the alarm device 5 sounds an alarm, the controller 6 will restart the timing, and when the accumulated timing exceeds the second time length, the controller 6 will send a door closing command to the automatic door closing component 9. After receiving the door closing command sent by the controller 6, the automatic door closing component 9 will control the upper door body 21 to close. Therefore, when the upper door body is in an open state, and the user bends over or squats to use the lower compartment of the refrigerator, and may forget or fail to notice that the upper door body is in an open state after use, the upper door body 21 can be automatically closed by the automatic door closing component 9, thereby preventing the user from colliding with the upper door body in a targeted manner. It can also prevent the upper door body 21 from being in an open state for a long time, thereby increasing energy consumption.

[0094] It is understandable that those skilled in the art can make equivalent substitutions or changes based on the technical solution and the utility model concept of the utility model, and all these changes or substitutions should fall within the protection scope of the utility model.

Claims

1. A refrigerator, characterized in that: include: A box body, wherein an upper chamber and a lower chamber are formed in the box body. The door body comprises an upper door body and a lower door body, wherein the upper door body is used to open and close the upper cavity, and the lower door body is used to open and close the lower cavity; A door opening and closing detection device is configured to detect the door opening and closing state of the door body; A human body sensing device is arranged on the lower frame of the upper door body, and the human body sensing device is configured to detect whether there is a person under the upper door body when the upper door body is in an open state; An alarm device, disposed on the box, and configured to issue a prompt alarm; A controller is connected to the door opening and closing detection device, the human body sensing device and the alarm device. The controller is configured to control the alarm device to sound an alarm when it detects that there is a person under the upper door body and the duration of the upper door body being in the open state exceeds a first duration.

2. The refrigerator according to claim 1, characterized in that: The refrigerator further comprises: An angle sensor, disposed on the upper door body and connected to the controller, wherein the angle sensor is configured to detect an opening angle of the upper door body; Correspondingly, the controller is also configured to control the alarm device to sound an alarm when it is detected that there is a person under the upper door body, the duration of the upper door body being in the open state exceeds a first duration, and the opening angle of the upper door body is within a preset angle range.

3. The refrigerator according to claim 1 or 2, characterized in that: The refrigerator further comprises: An automatic door closing component connected to the controller, the automatic door closing component being configured to control the upper door body to close based on a door closing instruction sent by the controller; Correspondingly, the controller is further configured to send a door closing instruction to the automatic door closing component when the accumulated time after the alarm device issues an alarm exceeds a second time.

4. The refrigerator according to claim 1, characterized in that: The door opening and closing detection device includes a first detection device, which is disposed in the upper cavity and configured to detect the door opening and closing state of the upper door body.

5. The refrigerator according to claim 4, characterized in that: The door opening and closing detection device further includes a second detection device, which is disposed in the lower cavity and configured to detect the door opening and closing state of the lower door body.

6. The refrigerator according to claim 1, characterized in that: The alarm device comprises a light alarm module, which is arranged on the lower frame of the upper door body, and the light alarm module is configured to emit a flashing light for alarm.

7. The refrigerator according to claim 1 or 6, characterized in that: The alarm device comprises a buzzer alarm module, which is arranged in the box, and the buzzer alarm module is configured to emit sound and light signals for alarm.

8. The refrigerator according to claim 7, characterized in that: The refrigerator further comprises: A display panel is arranged on the outer surface of the door body, the display panel is communicatively connected with the controller, and the display panel includes the buzzer alarm module.

9. The refrigerator according to claim 7, characterized in that: The alarm device further comprises a voice module, which is arranged in the box, and the voice module is configured to emit a prompt voice to give an alarm.

10. The refrigerator according to claim 1, characterized in that: The human body sensing device comprises a human body infrared sensor.

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