Refrigerator door body control method and refrigerator

Abstract

The invention relates to a refrigerator door body control method and a refrigerator, a door body of the refrigerator is connected with a guide rail assembly, the guide rail assembly is connected with a driver, the driver is used for driving the door body to move along the guide rail assembly, a first threshold value is the farthest moving distance of the door body driven by the driver, and a second threshold value is smaller than or equal to the first threshold value. The method comprises the steps of pushing the door body based on the driver; under the condition that the distance between the door body and the refrigerator body is larger than a first threshold value, the static state of the driver is maintained; judging whether the distance in the first preset time changes and is smaller than or equal to a second threshold value; and if the distance within the first preset time is smaller than or equal to the second threshold value or the distance within the first preset time is continuously larger than the second threshold value, the driver is operated to close the door body. By adopting the method, the safety of the refrigerator in the door closing process can be improved.

Description

Technical Field

[0001] The present application relates to the field of refrigerators, and in particular to a refrigerator door control method and a refrigerator. Background Art

[0002] For the sake of aesthetics, many built-in refrigerators nowadays are handleless or have hidden handles. However, refrigerators with this design may pinch your hands, especially those with an active door opening system. When the push rod is fully returned to its original position, in order to ensure that the door does not leak cold air, the tension of the hinges or guide rails is relatively large. At this time, if the user puts his hand on the hidden handle, there is a risk of pinching the hand or even injury.

[0003] In the related art, measures taken to prevent the refrigerator door from pinching the hand include: installing soft stickers at the gap of the refrigerator door to reduce the risk of pinching. The soft stickers are usually made of soft materials, such as rubber or silicone, which can play a buffering and protective role when the door is closed; when designing the refrigerator, the gap width of the refrigerator door is controlled to avoid the gap being too large or too small, thereby reducing the possibility of pinching; warning signs and instructions can be marked near the refrigerator door to remind users to pay attention to the risk of pinching and use the refrigerator correctly. However, based on the methods in the related art, there is still the problem of low safety during the refrigerator door closing process. With respect to the problem of low safety during the refrigerator door closing process in the related art, no effective solution has been proposed so far. Summary of the invention

[0004] Based on this, it is necessary to provide a refrigerator door control method and a refrigerator that can solve the problem of low safety during the refrigerator door closing process in response to the above technical problems.

[0005] In a first aspect, a refrigerator door control method is provided in this embodiment, wherein the refrigerator door is connected to a cabinet through a guide rail assembly, the guide rail assembly is connected to a driver, the driver is used to drive the door to move along the guide rail assembly, a first threshold is a maximum moving distance of the door driven by the driver, a second threshold is less than or equal to the first threshold, and the method includes:

[0006] Pushing open the door body based on the driver;

[0007] When the distance between the door body and the box body is greater than the first threshold, maintaining the static state of the driver;

[0008] Determine whether the distance changes within a first preset time and is less than or equal to the second threshold;

[0009] If the distance within the first preset time is less than or equal to the second threshold, or the distance within the first preset time is continuously greater than the second threshold, the driver is operated to close the door. In some embodiments, after the door is pushed open based on the driver, the method further includes:

[0010] When the distance is less than or equal to the first threshold, the driver is operated to move the door body to a closed state.

[0011] In some embodiments, when the distance is less than or equal to the first threshold, the driver is operated based on the first duty cycle; when the distance between the door body and the box body is less than or equal to the second threshold within the first preset time, or when the distance between the door body and the box body is continuously greater than the second threshold within the first preset time, the driver is operated based on the second duty cycle, and the first duty cycle is less than the second duty cycle.

[0012] In some embodiments, the step of pushing the door open based on the driver includes:

[0013] When receiving a door opening instruction, the driver is operated based on a first direction to push open the door body so that the distance between the door body and the box body is less than or equal to the first threshold;

[0014] The driver is maintained in a stationary state within a second preset time.

[0015] In some embodiments, after maintaining the static state of the driver for a second preset time, the method further includes:

[0016] The driver is operated based on a second direction within a third preset time, the first direction being opposite to the second direction.

[0017] In some embodiments, the box includes a pressure sensor, and receiving the door opening instruction includes:

[0018] When the pressure sensor is triggered, the door opening instruction is generated according to the operating state of the refrigerator.

[0019] In some embodiments, the door body includes an embedded groove, and the second threshold is the distance between the door body and the box body when the box body blocks the embedded groove.

[0020] In some of the embodiments, the guide rail assembly includes a guide rail and a spring, and the spring is used to pull the door body within a set self-locking range toward the refrigerator body. When the distance between the door body and the refrigerator body is the first threshold, the door body is within the self-locking range.

[0021] In some embodiments, the refrigerator includes a distance detection device, a transmitting end in the distance detection device is located at the door body, a reflecting end of the distance detection device is located at the box body, the transmitting end is used to transmit a light beam to the reflecting end, and receive a light beam reflected by the reflecting end, and obtaining the distance between the door body and the box body includes:

[0022] The distance between the door body and the box body is obtained according to the emission time of the light beam emitted by the emission end and the reflection time of the reflected light beam received.

[0023] In a second aspect, a refrigerator is provided in this embodiment, the refrigerator comprising a cabinet, a door, a guide rail assembly, a driver, a control panel and a distance detection device; wherein,

[0024] The box body is connected to the door body through the guide rail assembly;

[0025] The driver is connected to the door body and is used to drive the door body to move along the guide rail assembly;

[0026] The distance detection device is used to collect the distance between the door body and the box body;

[0027] The control board is connected to the driver and the distance detection device respectively, and is used to control the operation of the driver according to the refrigerator door control method described in any embodiment of the first aspect above.

[0028] In the above-mentioned refrigerator door control method and refrigerator, when the distance between the door and the cabinet is greater than a first threshold, the driver remains stationary to prevent the door from closing accidentally; when the distance between the door and the cabinet is less than a second threshold, the driver ensures that the door can close back to its original position, thereby improving the safety of the user during the door opening and closing process while ensuring that the door is completely closed. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 is an application environment diagram of a refrigerator door control method in an embodiment;

[0030] Figure 2 is a schematic flow chart of a refrigerator door control method in one embodiment;

[0031] Figure 3 is a flow chart of a refrigerator door control method in another embodiment;

[0032] Figure 4 is a schematic structural diagram of a refrigerator in one embodiment;

[0033] Figure 5 is a schematic diagram of a pressure sensor and a guide rail in one embodiment;

[0034] Figure 6 is a schematic diagram of a laser sensor and a push rod motor in one embodiment;

[0035] Figure 7 is a schematic structural diagram of a refrigerator body in another embodiment;

[0036] Figure 8 is a schematic diagram of a guide rail assembly in one embodiment;

[0037] Fig. 9 is a schematic diagram of a force state of a push rod in one embodiment;

[0038] Fig.10 is a schematic diagram of a pressure sensor and a driver in one embodiment;

[0039] Fig.11 A sealing schematic diagram of an embedded box in one embodiment;

[0040] Fig.12 A sealing schematic diagram of an embedded box in another embodiment;

[0041] Fig.13 FIG. 4 is a diagram showing the internal structure of a computer device in one embodiment.

[0042] Figure numerals: 1. box body; 11. liner; 12. box shell; 13. box shell cover; 2. door body; 3. guide rail assembly; 31. guide rail; 4. driver; 41. motor; 42. push rod; 43. encoder; 5. control board; 6. distance detection device; 61. transmitting end; 62. reflecting end; 7. press sensor; 8. embedded box; 9. vacuum insulation panel. DETAILED DESCRIPTION

[0043] In order to make the purpose, technical solution and advantages of the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0044] The refrigerator door control method provided in the embodiment of the present application can be executed in a memory, a control board or a similar computing device inside the refrigerator. For example, running on a computing device, Figure 1 FIG. 1 is a hardware structure block diagram of a computing device of a refrigerator door control method according to an embodiment of the present application. Figure 1 As shown, the computing device may include one or more ( Figure 1Only one is shown in the figure) processor 102 and memory 104 for storing data, wherein processor 102 may include but is not limited to a processing device such as a microprocessor MCU or a programmable logic device FPGA. The above-mentioned computing device may also include a transmission device 106 and an input / output device 108 for communication functions. It can be understood by those skilled in the art that Figure 1 The structure shown is only for illustration and does not limit the structure of the above computing device. Figure 1 More or fewer components as shown, or with Figure 1 Different configurations shown.

[0045] The memory 104 can be used to store computer programs, for example, software programs and modules of application software, such as the computer program corresponding to the refrigerator door control method in the present embodiment. The processor 102 executes various functional applications and data processing by running the computer program stored in the memory 104, that is, the above method is implemented. The memory 104 may include a high-speed random access memory, and may also include a non-volatile memory, such as one or more magnetic storage devices, flash memory, or other non-volatile solid-state memory. In some examples, the memory 104 may further include a memory remotely arranged relative to the processor 102, and these remote memories can be connected to the computing device via a network. Examples of the above-mentioned network include, but are not limited to, the Internet, an intranet, a local area network, a mobile communication network, and a combination thereof.

[0046] The transmission device 106 is used to receive or send data via a network. The above network includes a wireless network provided by a communication provider of the computing device. In one embodiment, the transmission device 106 includes a network adapter (Network Interface Controller, referred to as NIC), which can be connected to other network devices through a base station so as to communicate with the Internet. In one embodiment, the transmission device 106 can be a radio frequency (Radio Frequency, referred to as RF) module, which is used to communicate with the Internet wirelessly. It can be applied to Figure 1 In the application environment shown.

[0047] In one embodiment, the door body 2 of the refrigerator is connected to the cabinet 1 through the guide rail assembly 3, the guide rail assembly 3 is connected to the driver 4, the driver 4 is used to drive the door body 2 to move along the guide rail assembly 3, and the second threshold is less than or equal to the first threshold. Figure 2 As shown, a refrigerator door control method is provided, the method comprising:

[0048] Step 202 , pushing open the door body 2 based on the driver 4 .

[0049] The driver 4 includes but is not limited to a motor driver, a gear rack driver, and a screw driver. Optionally, the driver 4 is a push rod motor. When it is determined that the user has a door opening demand, the motor controls the push rod to move so that the door body 2 moves along the guide rail direction and the door body 2 is opened.

[0050] Step 204 : when the distance between the door body 2 and the box body 1 is greater than the first threshold, the driver 4 is maintained in a stationary state.

[0051] The distance between the door body 2 and the box body 1 refers to the gap between the door and the front end of the box body 1 after the door body 2 moves with the guide rail assembly 3. Optionally, the distance between the door body 2 and the box body 1 can be obtained by laser ranging, infrared ranging, etc. When the driver 4 is a motor 41, the moving distance of the door body 2 can also be determined by the encoder 43 of the motor 41, thereby obtaining the distance between the door body 2 and the box body 1.

[0052] The first threshold is the farthest distance that the driver 4 can drive the door body 2 to move. When the distance between the door body 2 and the box body 1 is greater than the first threshold, it can be determined that the door body 2 is pulled open by the user, rather than being pushed open by the driver 4. Since the distance is greater than the first threshold, there is a possibility that the door body 2 is closed by an external force; if there is a spring in the guide rail assembly 3, there is a possibility that the door body 2 is located within the self-locking point range of the guide rail assembly 3 and is closed under the force of the spring, so the static state of the position driver 4 can avoid the harm to the user caused by the accidental closing of the door body 2.

[0053] Step 206, determining whether the distance changes within the first preset time and is less than or equal to a second threshold.

[0054] The second threshold is the distance between the door body 2 and the box body 1 when the distance is too small and the user may be pinched. The first preset time is the time reserved for the user to pick up and put down items, which can be set according to actual needs. Optionally, when the distance is greater than the first threshold, the driver 4 is kept in a stationary state and the timing is started. The distance between the door body 2 and the box body 1 is continuously obtained within the first preset time, and it is determined whether the distance between the door body 2 and the box body 1 becomes smaller and is less than or equal to the second threshold.

[0055] Step 208: If the distance is less than or equal to the second threshold value within the first preset time, or if the distance is continuously greater than the second threshold value within the first preset time, the driver 4 is operated to move the door body 2 to the closed state.

[0056] Among them, when it is determined within the first preset time that the distance between the moved door body 2 and the box body 1 is less than or equal to the second threshold, it means that the user has a need to close the door, and the door body 2 has been closed to a state where it is difficult for the user to further close the door through the handle of the door body 2. The driver 4 controls the movement of the push rod 42 to adjust the movement speed and strength of the door body 2, which can ensure that the door body 2 is closed, and at the same time, the user does not need to manually close the door body 2 to a closed state.

[0057] In the related art, the finger pinching of refrigerator doors is basically reduced by improving the refrigerator structure or increasing user education to reduce the probability of user injury and the level of injury. The refrigerator itself does not have an active finger pinching protection design. In the above refrigerator door control method, the operating state of the driver 4 is controlled by detecting the distance between the door body 2 and the cabinet 1, so that the distance between the door body 2 and the cabinet 1 is greater than the first threshold, that is, when the door body 2 is pulled open by the user, the driver 4 can remain stationary to avoid the situation where the door body 2 is accidentally closed and causes injuries to the user; when the distance between the door body 2 and the cabinet 1 is less than the second threshold, the driver 4 ensures that the door body 2 can be closed and returned to its original position without the user manually closing the door, avoiding the possibility of the user's fingers being pinched when the user manually closes the door, thereby ensuring that the door body 2 is completely closed and improving the safety of the user during the opening and closing of the door body 2.

[0058] In one embodiment, the guide rail assembly 3 includes a guide rail 31 and a spring, and the spring is used to pull the door body within the set self-locking range toward the refrigerator body. When the distance between the door body 2 and the body 1 is a first threshold, the door body 2 is within the self-locking range.

[0059] Among them, the self-locking range is the area between the position when the door body 2 is closed and the position when the door body 2 is opened and reaches the self-locking point of the guide rail assembly 3. When the door body 2 is opened to the self-locking point of the guide rail assembly 3, the door body 2 is not easy to move due to the action of the spring; when the door body 2 is in the self-locking range, the spring pulls the door body 2 toward the box body 1. When the door body 2 is closed to the self-locking point by the spring, the door body 2 can be fixed, thereby improving safety. By setting the size of the first threshold, the door body is located within the self-locking range after the driver pushes the door body. In this way, when the door body is pushed open by the driver and there is no external force to control the door body 2, the door body 2 can be automatically retracted by the spring instead of staying in place. Avoid the situation where the driver 4 pushes the door open and the door body 2 is opened for a long time without the user performing further door pulling operations.

[0060] In one embodiment, after the door body 2 is pushed open based on the driver 4, the method further comprises: when the distance is less than or equal to a first threshold, operating the driver 4 so that the door body 2 moves to a closed state.

[0061] Among them, since the first threshold is the farthest moving distance of the door body 2 driven by the driver 4, when it is judged that the distance is less than or equal to the first threshold, it can be judged that the user has not manually opened the door. By controlling the operation of the door body 2 by the driver 4, it is possible to ensure that the door body 2 is closed without the user manually closing the door body 2 to a closed state, while avoiding the situation where the driver 4 makes an erroneous judgment and causes the door body 2 to continue to be open.

[0062] If the guide rail assembly 3 includes a guide rail 31 and a spring, since the maximum moving distance is within the self-locking range, the spring will pull the door body 2 toward the box body 1, but there is a possibility that the door body 2 cannot be completely closed. Therefore, the door body can be ensured to be closed by driving the driver 4.

[0063] Furthermore, when the distance is less than or equal to a first threshold, the driver 4 is operated based on the first duty cycle; when the distance between the door body 2 and the box body 1 is less than or equal to a second threshold within a first preset time, or when the distance between the door body 2 and the box body 1 is continuously greater than the second threshold within the first preset time, the driver 4 is operated based on the second duty cycle, and the first duty cycle is less than the second duty cycle.

[0064] Among them, since the distance between the door body 2 and the cabinet 1 is less than or equal to the second threshold value during the first preset time, the distance between the door body 2 and the cabinet 1 is narrow, and it is difficult for the user to further close the door through the handle of the door body 2; when the distance between the door body 2 and the cabinet 1 is continuously greater than the second threshold value during the first preset time, it can be determined that the user has forgotten to close the door, so the driving force can be operated with a larger duty cycle to increase the working voltage to ensure that the freezer door is completely closed. When the distance is less than the first threshold value, it is determined that the driver 4 may be triggered by mistake or the user currently does not have the need to open the door, and the driver 4 is operated based on the lower first duty cycle to avoid sudden and forceful door slamming to injure the user. In this embodiment, the driver 4 is operated by different duty cycles to control the force and speed of door closing, thereby improving the safety of users opening and closing the door.

[0065] In one embodiment, pushing the door body 2 open based on the driver 4 includes: when receiving a door opening command, running the driver 4 based on a first direction to push the door body 2 open so that the distance between the door body 2 and the box body 1 is less than or equal to a first threshold; maintaining the stationary state of the driver 4 within a second preset time.

[0066] Among them, the door opening command is used to indicate that the user has a need to open the door. The door opening command can be generated according to the action of the user pressing the door body 2, or the command input by the user through a touch screen, a terminal connected to the refrigerator, and other devices. Optionally, by limiting the operating duty cycle and time of the driver 4, the driving distance of the driver 4 is limited so that the distance between the door body 2 and the cabinet 1 is less than or equal to the first threshold. The second preset time is the time required for the user to open the door body 2 after seeing the door open, and the second preset time can be set according to demand. In this embodiment, the door body 2 is opened by running the driver 4 according to the door opening command, which can achieve the effect of automatic door opening, and by waiting for the second preset time, the user can open the door body 2 within the second preset time, and the door body 2 will not be accidentally closed during this process.

[0067] Further, in one embodiment, after maintaining the static state of the driver 4 for the second preset time, the method further includes: operating the driver 4 based on the second direction for a third preset time, the first direction being opposite to the second direction.

[0068] The second direction is used to limit the moving direction of the door body 2, and the third preset time is used to limit the moving distance of the door body 2. Specifically, when the driver 4 is operated based on the second direction, the door body 2 gradually approaches the box body 1, but the door body 2 remains open. In this embodiment, by operating the driver 4 based on the second direction within the third preset time, the user can be prompted to close the door.

[0069] In one embodiment, the housing 1 includes a pressure sensor 7, and receiving a door opening instruction includes: when the pressure sensor 7 is triggered, generating a door opening instruction according to the operating state of the refrigerator.

[0070] Optionally, when the user applies pressure to the door body 2, the force is transmitted to the pressure sensor 7 of the box body 1 through the door body 2, so that the sensor is triggered.

[0071] The operation state of the refrigerator includes the switch state of other door bodies 2 except the door body 2 corresponding to the current presser. For example, if other door bodies 2 adjacent to the door body 2 corresponding to the current presser are in an open state, then when the press sensor 7 is triggered, no door opening instruction is generated, so as to avoid the situation where the two door bodies 2 are close to each other during the door opening process and cause injuries to the user. The operation state of the refrigerator can also be other states. For example, when the child lock of the refrigerator is turned on or the refrigerator is in a fault state, even if the press sensor 7 is triggered, no door opening instruction is generated, thereby improving the user safety during the door opening process.

[0072] In one embodiment, the door body 2 includes an embedded groove, and the second threshold is the distance between the door body 2 and the box body 1 when the box body 1 blocks the embedded groove. The embedded groove is the handle of the door body 2, and the user can open and close the door body 2 by inserting his hand into the embedded groove. The second threshold can be the distance between the door body 2 and the box body 1 when the box body 1 begins to block the embedded groove, or it can be the distance between the door body 2 and the box body 1 when the box body 1 completely blocks the embedded groove, that is, the user cannot see the embedded groove. In this embodiment, the second threshold is obtained according to the obstruction of the embedded groove, so that when the distance between the door body 2 and the box body 1 is less than or equal to the second threshold, the driver 4 closes the door without hurting the user.

[0073] Furthermore, the refrigerator may also include a grating, and when the distance between the door body 2 and the cabinet 1 is less than or equal to a second threshold value within the first preset time, the grating is activated to detect whether there is an object in the embedded groove of the door body 2, and when there is an object in the embedded groove, the driver 4 is controlled to stop running until there is no object in the embedded groove, and the driver 4 is operated to move the door body 2 to a closed state. By detecting whether there is an object in the embedded groove, safety problems caused by the user's hand reaching into the handle when the distance between the door body 2 and the cabinet 1 is too small are avoided.

[0074] In one embodiment, the refrigerator includes a distance detection device 6, a transmitting end 61 in the distance detection device 6 is located at the door body 2, a reflecting end 62 of the distance detection device 6 is located at the box body 1, the transmitting end 61 is used to transmit a light beam to the reflecting end 62, and receive a light beam reflected by the reflecting end 62, and obtaining the distance between the door body 2 and the box body 1 includes: obtaining the distance between the door body 2 and the box body 1 according to the emission time of the light beam emitted by the transmitting end 61 and the reflection time of the reflected light beam received.

[0075] The light beam emitted by the transmitting end 61 may be visible light or laser. The reflecting end 62 may be a device with reflecting ability such as a reflector. The transmitting end 61 and the reflecting end 62 are arranged correspondingly, so that the reflecting end 62 can reflect the light beam emitted by the transmitting end 61 to the transmitting end 61, thereby calculating the distance between the door body 2 and the box body 1 according to the emission time, reflection time and light speed of the light beam. In this embodiment, the distance between the door body 2 and the box body 1 can be obtained in real time and accurately through the distance detection device 6.

[0076] Optionally, when the driver 4 is a push rod motor, the distance detection device 6 can also be a door magnetic switch and a motor 41 encoder 43. The motor 41 encoder 43 is used to determine the number of revolutions of the motor 41 when it is running, and to determine the moving distance of the door body 2 by controlling the number of revolutions of the motor 41. The door magnetic switch is used to determine the switch state of the door body 2.

[0077] Optionally, when the door magnetic switch output signal is 0, it is determined that the distance between the box body 1 and the door body 2 meets the condition of being less than or equal to the second threshold; when the door magnetic switch output signal is 1, it is determined that the distance between the door body 2 and the box body 1 meets the condition of being greater than the first threshold. In the case of receiving the door opening command, the driver 4 is operated based on the first direction to open the door body 2 and push the door body 2 to the first position. If the door magnetic switch output signal is not 1, it is determined that the distance between the box body 1 and the door body 2 meets the condition of being less than or equal to the first threshold, and the driver 4 is operated to move the door body 2 to the closed state. If the door magnetic switch output signal is 1, it is determined that the distance between the box body 1 and the door body 2 meets the condition of being greater than the first threshold, and the driver 4 is operated based on the second direction to push the door body 2 to the second position. Subsequently, the state of the door magnetic switch is obtained again. If the output signal of the door magnetic switch is 0, it is determined that the distance between the door body 2 and the box body 1 is less than or equal to the second threshold, and the following steps are performed: if the distance between the door body 2 and the box body 1 is less than or equal to the second threshold within the first preset time, or the distance between the door body 2 and the box body 1 is continuously greater than the second threshold within the first preset time, the driver 4 is operated to move the door body 2 to the closed state. If the output signal of the door magnetic switch is not 0, the distance between the door body 2 and the box body 1 is greater than the first threshold, and the driver 4 is operated based on the second direction to push the door body 2 to the second position.

[0078] In one embodiment, Figure 3 Another refrigerator door control method is provided, which is applied to the freezer door of the refrigerator. The driver 4 uses a push rod motor, and the guide rail assembly 3 includes a guide rail 31 and a spring 31. The main steps are as follows:

[0079] Step 301, the pressure sensor 7 is triggered.

[0080] Among them, the pressure sensor 7 is located at the box 1 corresponding to the freezer door. When the user applies pressure to the freezer door, the freezer pressure sensor 7 senses the pressure, is triggered, and sends a pulse signal to the control board 5 of the freezer door, and step 302 is executed under the control of the control board 5; when the freezer pressure sensor 7 does not sense pressure, the freezer pressure sensor 7 is not triggered.

[0081] Furthermore, in order to avoid the gap between other door bodies 2 and the freezer door from hurting the user due to the fact that other door bodies 2 such as the refrigerator door are not closed during the freezer door opening process, the control panel 5 can also decide whether to operate the freezer push rod motor according to the current state of other doors after receiving the pulse signal. If the distance between the refrigerator door and other door bodies 2 may be less than the specified threshold during the refrigerator door opening process, the door opening condition is not met, and step 302 is not executed until the distance between the refrigerator door and other door bodies 2 during the refrigerator door opening process is not less than the specified threshold. For example, when the refrigerator door is opened at a small angle, the push rod motor of the freezer door does not work, and the freezer door will not open again, thereby reducing the risk of pinching the hand; if the refrigerator door is not opened or opened at a large angle, step 302 is executed when the pressure sensor 7 is triggered.

[0082] Step 302: The push rod motor pushes the door body 2 open for Nf seconds at a 100% duty cycle.

[0083] Among them, the push rod motor is the driver 4 in the above embodiment, which is used to push the freezer door to run along the guide rail 31. After the push rod motor pushes the door body 2 open for Nf seconds according to a 100% duty cycle, the door body 2 is in the first position. Among them, when the door body 2 is in the first position, the guide rail 31 is within the self-locking point range of the spring. Specifically, since the guide rail 31 is within the self-locking range of the spring, the guide rail 31 can be automatically and slowly closed by the spring tension after the external force is released. If the self-locking range is exceeded, that is, the door is opened for a long distance, the guide rail 31 will not be automatically recovered. The moving distance of the push rod 42 in the push rod motor is controlled by the duty cycle and the running time to ensure that when the push rod 42 pushes the door open and the user does not perform further door pulling operations, the door body 2 can be automatically recovered by the spring tension instead of staying in place.

[0084] Step 303, the freezing push rod motor pauses for Ns seconds.

[0085] Optionally, Ns is the second preset time in the above embodiment, and Ns can be set to 4 seconds or other time. By pausing the push rod motor for Ns seconds, time is reserved for the user to open the door and take things.

[0086] Step 304: The push rod motor reverses and closes the door N at a duty cycle of 15%. r1 Second.

[0087] Among them, N r1 Seconds can be set to 0.8 seconds or other time. By reversing with a lower duty cycle, the door body 2 is retracted at a slow speed for 0.8 seconds under the combined effect of the spring tension and the reversal of the motor 41, giving the user a door closing reminder.

[0088] Step 305 , determining whether the current distance between the freezing door and the cabinet 1 is greater than N. If the current distance between the freezing door and the cabinet 1 is greater than N, executing step 306 ; if the current distance between the freezing door and the cabinet 1 is less than or equal to N, executing step 309 .

[0089] Among them, N is the farthest position that the push rod 42 can be pushed out when the door body 2 is open, that is, the first threshold in the above embodiment. If the distance between the freezer door and the cabinet 1 is greater than N centimeters, it means that the door is pulled open by the user; when the distance between the freezer door and the cabinet 1 is less than or equal to N centimeters, the position of the push rod 42 is within the self-locking point range of the guide rail assembly 3.

[0090] In step 306 , the push rod motor stops for s seconds with a duty cycle of 0%.

[0091] Wherein, s is the first preset time in the above embodiment, and optionally, the maximum time for maintaining the stop state is set to 180 seconds, or can be set to other time. The push rod motor is kept in the stopped state by using a duty cycle of 0%.

[0092] Step 307, s is decremented.

[0093] Step 308, determine whether the distance between the freezing door and the cabinet 1 is less than M or s decreases to 0. If it is determined that the distance between the freezing door and the cabinet 1 is less than M or s decreases to 0, execute step 310; otherwise, execute step 307 and continue to decrease the time s.

[0094] Wherein, M is the distance between the door body 2 and the cabinet 1 when the hidden freezer door handle is completely covered, i.e., the second threshold value in the above embodiment. If the current distance between the freezer door and the cabinet 1 is greater than M centimeters, the user can move the door body 2 through the door handle without being pinched; otherwise, there is a possibility that the user's hand will be pinched.

[0095] Among them, s is the time given to the user to open the freezer door to take out or put items. If s decreases to 0, and the distance between the freezer door and the cabinet 1 continues to be greater than M centimeters, the user has not closed the door 2.

[0096] Step 309: The push rod motor reverses and closes the door N at a duty cycle of 20% r2 seconds, and stops executing the refrigerator door 2 control method. r2 The seconds can be set to 4 seconds or other time.

[0097] Step 310: The push rod motor reverses and closes the door at a 100% duty cycle. r3 seconds, and stops executing the refrigerator door 2 control method. r3 Seconds can be set to 1 second or other time.

[0098] In this embodiment, the electrical and structural aspects are combined to detect the distance between the freezer door and the cabinet 1. After the freezer door is opened and away from the self-locking point of the guide rail assembly 3, the push rod 42 can remain stationary; when the freezer door is within the self-locking point range of the guide rail assembly 3, the push rod 42 controls the door body 2 to slowly move and close along with the guide rail assembly 3. If the distance between the freezer door and the cabinet 1 is opened again during the process of the door body 2 slowly moving along with the guide rail assembly 3, the push rod 42 can still maintain the current position. This prevents users from being pinched by the door when opening and closing the door, thereby improving the safety of the refrigerator door opening and closing process. When the hidden door handle of the freezer door is completely covered, the working voltage of the push rod 42 is increased to ensure that the freezer door is completely closed.

[0099] Based on the same inventive concept, the embodiment of the present application also provides a refrigerator for implementing the above-mentioned method for controlling the refrigerator door 2. The implementation scheme for solving the problem provided by the refrigerator is similar to the implementation scheme recorded in the above-mentioned method, so the specific limitations in one or more refrigerator device embodiments provided below can refer to the above-mentioned limitations on the method for controlling the refrigerator door 2, and will not be repeated here.

[0100] In one embodiment, Figure 4 A structural schematic diagram of a refrigerator is provided, the refrigerator includes a cabinet 1, a door 2, a guide rail assembly 3, a driver 4, a control panel 5 and a distance detection device 6, wherein the cabinet 1 is connected to the door 2 through the guide rail assembly 3; the driver 4 is connected to the door 2, and is used to drive the door 2 to move along the guide rail assembly 3; the distance detection device 6 is used to collect the distance between the door 2 and the cabinet 1; the control panel 5 is respectively connected to the driver 4 and the distance detection device 6, and is used to control the operation of the driver 4 according to the refrigerator door 2 control method of any of the above embodiments. Among them, the control panel 5 can be implemented in whole or in part by software, hardware and a combination thereof. The above modules can be embedded in or independent of the processor in the computer device in the form of hardware, or can be stored in the memory in the computer device in the form of software, so that the processor can call and execute the operations corresponding to the above modules.

[0101] Optionally, the guide rail assembly 3 includes a guide rail 31 and a spring; the spring is used to pull the door body 2 within a set self-locking range toward the box body 1.

[0102] Optionally, the distance detection device 6 includes a transmitting end 61 and a reflecting end 62, the transmitting end 61 is located at the door body 2, and the reflecting end 62 is located at the box body 1; wherein the reflecting end 62 is used to reflect the light beam emitted by the transmitting end 61; the transmitting end 61 is used to emit a light beam to the reflecting end 62, and receive the light beam reflected by the reflecting end 62.

[0103] In one embodiment, the refrigerator door 2 is a freezer door; the box 1 is a freezer compartment; wherein the refrigerator further comprises a pressure sensor 7, which is used to realize pressing to open the door, and can convert the pressure of the palm of a human body or other parts on the freezer door into a signal, and output a pulse signal to the control board 5 after reaching a certain threshold; wherein the freezer door is used to isolate the freezer compartment from the external environment, so as to keep the freezer compartment warm, and is also a receptor of the pressure sensor 7. The guide rail assembly 3 comprises a guide rail 31 and a spring, and within the self-locking range, the spring pulls the freezer door toward the box 1. Figure 5 A schematic diagram of a pressure sensor 7 and a guide rail 31 is provided, as shown in Figure 5 As shown, the pressure sensor 7 is installed on the edge of the box body 1. After the pressure sensor 7 outputs a pulse signal to the control board 5, the control board 5 controls the driver 4 to operate so that the door body 2 moves along the guide rail 31.

[0104] Among them, the distance detection device 6 is a laser sensor, the transmitting end 61 of the laser sensor is used to emit laser, and the reflecting end 62 includes a reflector group; the driver 4 is a push rod motor, including a motor 41 and a push rod 42, which is used to provide power for pushing open the freezer door. Figure 6 A schematic diagram of a laser sensor and a push rod motor is provided, such as Figure 6 As shown in (a), the transmitting end 61 is installed on the box body 1, and the push rod motor is installed on the bottom of the box body 1. Figure 6 As shown in (b), the reflection end 62 is installed on the door body 2 and is used to provide real-time feedback of the distance between the freezer door and the cabinet body 1.

[0105] Optionally, the distance detection device 6 is a door magnetic switch. Figure 7 A schematic diagram of the structure of another refrigerator body 1 is provided, such as Figure 7 As shown, a pressure sensor 7, a distance detection device 6, a push rod 42 and a guide rail assembly 3 are installed on the refrigerator body 1.

[0106] In one embodiment, the driver 4 is a push rod motor. In order to ensure that the driver 4 can be disassembled and assembled when the refrigerator is in an upright state, an embedded box 8 can be provided to install the driver 4 and the pressure sensor 7 on the side of the box body 1. Figure 8 A schematic diagram of an embedded box 8 is provided, such as Figure 8 As shown, the embedded box 8 is attached to the box shell 12 and the liner 11 before foaming. After foaming, the box body of the embedded box 8 is fixed to the inner side of the box shell 12 by the foaming material. The push rod 42 and the pressure sensor 7 assembly can be fixed in the box by screws from the side, and the box shell cover 13 is fixed to the outside of the box shell 12. When replacing, only the box shell cover 13 needs to be opened.

[0107] Furthermore, by installing the push rod 42 in the push rod motor near the position of the guide rail 31, the door opening torque is reduced to ensure smooth force during the door opening process. Fig. 9A schematic diagram of the force state of the push rod is provided, where: Fig. 9 (a) is the force state of the traditional door opening when the push rod 42 is at the bottom. The force point is far away from the position (constraint) of the guide rail 3, which will generate a torque as shown by the arrow in the figure. Fig. 9 (b) is a schematic diagram of the force position of the guide rail 31 in this embodiment. Since the force point is near the guide rail 31, the torque is close to 0, the door body 2 has no tendency to flip, and the door body 2 is pushed out more smoothly. This ensures that the door body 2 is not subject to torque when being pushed out / the door body is pushed out more smoothly. Optionally, two push rods 42 are selected to be respectively on both sides of the box body 1 to ensure more sufficient door opening force.

[0108] In one embodiment, the refrigerator further includes a pressure sensor 7, and the driver 4 includes a push rod 42, a stepping motor 41 and an encoder 43 thereof. The pressure sensor 7 and the push rod 42 of the conventional solution are respectively installed in respective embedded boxes 8, each forming an assembly, and sealed to prevent foam leakage. The number of parts, the number of assemblies, and the number of installation steps are all greater. Fig.10 A schematic diagram of a pressure sensor 7 and a driver 4 is provided, such as Fig.10 As shown, the pressure sensor 7 assembly and the push rod 42 are installed in the same embedded box 8, so that the sensor assembly can also be taken out from the side, achieving maintainability and replaceability, while simplifying the number of parts, sealing steps, and the total number of components, thereby achieving the effect of simplifying the installation of the pressure sensor 7 and the push rod 42.

[0109] Furthermore, in one embodiment, in order to achieve sealing of the embedded box 8 and prevent the foaming material from overflowing, double-sided tape, aluminum foil and hot melt adhesive are used to seal the surroundings and openings of the embedded box 8 to ensure that the foaming material does not overflow into the box body during the foaming process. The top and opening of the embedded box 8 are risk points for overflowing. Fig.11 A sealing schematic diagram of an embedded box 8 is provided, such as Fig.11 As shown, the red surface of the inner liner 11 and the embedded box 8 are fixed with a double-sided sticky thin sponge, and the red surface of the box shell 12 and the box body are sealed with aluminum foil, and hot melt adhesive can be added to improve the sealing. The outlet hole of the box body is sealed with sponge and tape.

[0110] In the related art, the space between the refrigerator shell 12 and the inner tank 11 is filled with foam material to ensure heat insulation. In the freezer, due to the greater temperature difference between the inside and outside, the foam is usually more than 50mm. In this solution, the push rod 42 occupies part of the foam thickness, which will reduce the heat insulation effect and easily cause poor refrigeration effect or condensation problems. Furthermore, Fig.12 Another sealing schematic diagram of the embedded box 8 is provided, such as Fig.12 As shown, an additional vacuum insulation panel 9 is added at the push rod 42 to ensure thermal insulation. Since the thermal conductivity of the vacuum insulation panel 9 is about one tenth of that of the foam, a 10 mm vacuum insulation panel 9 is attached to the back of the embedded box 8 of the push rod 42 to make up for the loss of the foam material, thereby ensuring the thermal insulation effect at this location.

[0111] In one embodiment, a computer device is provided. The computer device may be a server, and its internal structure diagram may be as follows: Fig.13 As shown. The computer device includes a processor, a memory, an input / output interface (Input / Output, referred to as I / O) and a communication interface. Among them, the processor, the memory and the input / output interface are connected through a system bus, and the communication interface is connected to the system bus through the input / output interface. Among them, the processor of the computer device is used to provide computing and control capabilities. The memory of the computer device includes a non-volatile storage medium and an internal memory. The non-volatile storage medium stores an operating system, a computer program and a database. The internal memory provides an environment for the operation of the operating system and the computer program in the non-volatile storage medium. The database of the computer device is used to store data required for executing a refrigerator door control method, such as the distance between the door body 2 and the refrigerator. The input / output interface of the computer device is used to exchange information between the processor and an external device. The communication interface of the computer device is used to communicate with an external terminal through a network connection. When the computer program is executed by the processor, a refrigerator door control method is implemented.

[0112] Those skilled in the art will understand that Fig.13 The structure shown in the figure is only a block diagram of a part of the structure related to the solution of the present application, and does not constitute a limitation on the computer device to which the solution of the present application is applied. The specific computer device may include more or fewer components than those shown in the figure, or combine certain components, or have a different arrangement of components.

[0113] In one embodiment, a computer device is further provided, including a memory and a processor, wherein a computer program is stored in the memory, and the processor implements the steps in the above method embodiments when executing the computer program.

[0114] In one embodiment, a computer-readable storage medium is provided, on which a computer program is stored. When the computer program is executed by a processor, the steps in the above-mentioned method embodiments are implemented.

[0115] In one embodiment, a computer program product is provided, including a computer program, which implements the steps in the above method embodiments when executed by a processor.

[0116] Those skilled in the art can understand that all or part of the processes in the above-mentioned embodiment methods can be completed by instructing the relevant hardware through a computer program, and the computer program can be stored in a non-volatile computer-readable storage medium. When the computer program is executed, it can include the processes of the embodiments of the above-mentioned methods. Among them, any reference to the memory, database or other medium used in the embodiments provided in the present application can include at least one of non-volatile and volatile memory. Non-volatile memory can include read-only memory (ROM), magnetic tape, floppy disk, flash memory, optical memory, high-density embedded non-volatile memory, resistive random access memory (ReRAM), magnetoresistive random access memory (MRAM), ferroelectric random access memory (FRAM), phase change memory (PCM), graphene memory, etc. Volatile memory can include random access memory (RAM) or external cache memory, etc. As an illustration and not limitation, RAM can be in various forms, such as static random access memory (SRAM) or dynamic random access memory (DRAM). The database involved in each embodiment provided in this application may include at least one of a relational database and a non-relational database. Non-relational databases may include distributed databases based on blockchains, etc., but are not limited to this. The processor involved in each embodiment provided in this application may be a general-purpose processor, a central processing unit, a graphics processor, a digital signal processor, a programmable logic device, a data processing logic device based on quantum computing, etc., but are not limited to this.

[0117] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0118] The above embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the present application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the present application shall be subject to the attached claims.

Claims

1. A refrigerator door control method, characterized in that: The door body of the refrigerator is connected to the cabinet through a guide rail assembly, the guide rail assembly is connected to a driver, the driver is used to drive the door body to move along the guide rail assembly, the first threshold is the farthest moving distance of the door body driven by the driver, the second threshold is less than or equal to the first threshold, and the method includes: Pushing open the door body based on the driver; When the distance between the door body and the box body is greater than the first threshold, maintaining the static state of the driver; Determine whether the distance changes within a first preset time and is less than or equal to the second threshold; If the distance within the first preset time is less than or equal to the second threshold, or if the distance within the first preset time is continuously greater than the second threshold, the driver is operated to close the door.

2. The refrigerator door control method according to claim 1, characterized in that: After the door body is pushed open based on the driver, the method further includes: When the distance is less than or equal to the first threshold, the driver is operated to move the door body to a closed state.

3. The refrigerator door control method according to claim 2, characterized in that: When the distance is less than or equal to the first threshold, operating the driver based on a first duty cycle; When the distance between the door body and the box body is less than or equal to the second threshold value within the first preset time, or the distance between the door body and the box body is continuously greater than the second threshold value within the first preset time, the driver is operated based on the second duty cycle, and the first duty cycle is less than the second duty cycle.

4. The refrigerator door control method according to claim 1, characterized in that: The method of pushing the door body open based on the driver comprises: When receiving a door opening instruction, the driver is operated based on a first direction to push open the door body so that the distance between the door body and the box body is less than or equal to the first threshold; The driver is maintained in a stationary state within a second preset time.

5. The refrigerator door control method according to claim 4, characterized in that: After maintaining the static state of the driver for a second preset time, the method further includes: The driver is operated based on a second direction within a third preset time, the first direction being opposite to the second direction.

6. The refrigerator door control method according to claim 4, characterized in that: The box body includes a pressure sensor, and receiving the door opening instruction includes: When the pressure sensor is triggered, the door opening instruction is generated according to the operating state of the refrigerator.

7. The refrigerator door control method according to any one of claims 1 to 3, characterized in that: The door body includes an embedded groove, and the second threshold is the distance between the door body and the box body when the box body blocks the embedded groove.

8. The refrigerator door control method according to claim 1, characterized in that: The guide rail assembly includes a guide rail and a spring, wherein the spring is used to pull a door body within a set self-locking range toward a refrigerator body. When the distance between the door body and the refrigerator body is the first threshold, the door body is within the self-locking range.

9. The refrigerator door control method according to claim 1, characterized in that: The refrigerator includes a distance detection device, wherein a transmitting end in the distance detection device is located at the door body, and a reflecting end of the distance detection device is located at the box body. The transmitting end is used to transmit a light beam to the reflecting end and receive a light beam reflected by the reflecting end. Acquiring the distance between the door body and the box body includes: The distance between the door body and the box body is obtained according to the emission time of the light beam emitted by the emission end and the reflection time of the reflected light beam received.

10. A refrigerator, characterized in that: The refrigerator includes a box body, a door body, a guide rail assembly, a driver, a control panel and a distance detection device; wherein, The box body is connected to the door body through the guide rail assembly; The driver is connected to the door body and is used to drive the door body to move along the guide rail assembly; The distance detection device is used to collect the distance between the door body and the box body; The control board is connected to the driver and the distance detection device respectively, and is used to control the operation of the driver according to the method according to any one of claims 1 to 9.

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