Refrigerator

Abstract

The utility model relates to a refrigerator. The refrigerator comprises a refrigerator body and a refrigerator cover, a refrigerator liner; a box door; the weight sensor can detect the weight of the box door, the door pushing device is arranged in the box body and provided with a push rod, and the door pushing device can drive the push rod to push the box door to be opened. The controller can provide power supply voltage for the door pusher; the controller can adjust the power supply voltage provided for the door pusher according to the weight value detected by the weight sensor, and enables the door pusher to provide different pushing forces for the push rod; the power supply voltage provided by the controller to the door pusher can be increased along with the increase of the weight value detected by the weight sensor, and the thrust provided by the door pusher to the push rod is increased. In this way, no matter how the weight of the refrigerator door changes, the push rod can easily push the refrigerator door open, then the automatic door opening function of the refrigerator can be optimized, and the door opening thrust on the refrigerator door can be automatically adjusted.

Description

Technical Field

[0001] The utility model relates to the technical field of refrigeration equipment, in particular to a refrigerator. Background Art

[0002] A refrigerator is a container that uses the phase change of a refrigerant to create a low-temperature environment for storing food. It is one of the indispensable household appliances for people's home life. As people's living standards improve, the requirements for refrigerators are getting higher and higher.

[0003] In the related refrigerator, the refrigerator generally comprises a box body and a box liner arranged in the box body, wherein a storage chamber is formed in the box liner. A box door is arranged at the front side of the box body, and the box door is used to open and close the storage chamber.

[0004] Among existing refrigerators, some refrigerators use a door pusher to open the door, so that the refrigerator has an automatic door opening function. However, the door pusher of a conventional refrigerator has a certain force for pushing the door. When there is no food on the door shelf inside the door, the door becomes light, and the door push force is too large, causing the door to suddenly bounce open and accidentally injure the user. When there are a lot of heavy food on the door shelf inside the door, the door becomes heavy, and the door push force is too small, and the door cannot be pushed open. Utility Model Content

[0005] The utility model aims to provide a refrigerator to optimize the automatic door opening function of the refrigerator.

[0006] The utility model also aims to provide a refrigerator which can automatically adjust the opening thrust of the door.

[0007] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0008] According to one aspect of the utility model, the utility model provides a refrigerator, which includes: a box body, the box body forms an outer shell of the refrigerator; a box liner, a storage chamber is formed in the box liner; a box door, the box door is hinged to the front side of the box body, and the box door is used to open and close the storage chamber; a weight sensor, the weight sensor is arranged on the box door, and the weight sensor can detect the weight of the box door; a door pusher, the door pusher is arranged in the box body, the door pusher has a push rod, and the door pusher can drive the push rod to extend out of the front wall of the box body to open and close the storage chamber. Push the box door to open; a controller, wherein the controller is connected to the weight sensor signal, and the controller and the door pusher are electrically connected; the controller can provide a power supply voltage to the door pusher; wherein the controller can adjust the power supply voltage provided to the door pusher according to the weight value detected by the weight sensor, and enable the door pusher to provide different thrusts to the push rod; the power supply voltage provided by the controller to the door pusher can increase as the weight value detected by the weight sensor increases, and enable the door pusher to provide a greater thrust to the push rod.

[0009] In some embodiments of the present application, a door opening switch is provided on the box body, and the door opening switch is connected to the controller signal; when the door opening switch is touched or pressed, the controller can provide a power supply voltage to the door pusher according to the weight value detected by the weight sensor, so that the push rod generates a thrust to automatically open the box door.

[0010] In some embodiments of the present application, the door opening switch is arranged on the front side wall of the box door.

[0011] In some embodiments of the present application, the door pusher includes a motor, which is transmission-connected to the push rod and electrically connected to the controller; the controller can provide different operating voltages to the motor so that the motor provides different thrusts to the push rod.

[0012] In some embodiments of the present application, the door pusher is arranged in the area between the outer wall of the box liner and the inner wall of the box body; a telescopic opening is opened on the front wall of the box body, and the push rod is movably arranged at the telescopic opening.

[0013] In some embodiments of the present application, the door pusher is arranged in the area between the top of the box liner and the top wall of the box body, and the telescopic opening is arranged on the front wall of the top end of the box body.

[0014] In some embodiments of the present application, an installation cavity is provided above the top of the box body, and the door pusher is arranged in the installation cavity; the telescopic opening is located at the front side of the installation cavity, and the push rod is extended along the front and rear directions of the box body, the rear end of the push rod is extended into the installation cavity, and the front end of the push rod is extended toward the telescopic opening.

[0015] In some embodiments of the present application, a door shelf is provided on the inner wall of the box door, and the door shelf is used to place items; the weight value detected by the weight sensor can increase as the weight of the items in the door shelf increases.

[0016] In some embodiments of the present application, a lower end cover is provided at the bottom end of the box door, and the weight sensor is provided on the lower end cover.

[0017] In some embodiments of the present application, the weight sensor adopts any one of a resistive strain type weight sensor, a piezoresistive effect type weight sensor, and a crystal oscillator type weight sensor.

[0018] According to another aspect of the utility model, the utility model also provides a refrigerator, which includes: a box body, the box body forms an outer shell of the refrigerator; a box liner, a storage chamber is formed in the box liner; a box door, the box door is hinged to the front side of the box body, and the box door is used to open and close the storage chamber; a door shelf is provided on the inner wall of the box door; a weight sensor, the weight sensor is provided on the box door, and the weight sensor can detect the weight of the door shelf; a door pusher, the door pusher is provided in the box body, the door pusher has a push rod, and the door pusher can drive the push rod to extend the weight The front wall of the box body is pressed against the front wall of the box body to push the box door to open; a controller, the controller is connected to the weight sensor signal, and the controller is electrically connected to the door pusher; the controller can provide a power supply voltage to the door pusher; wherein, the controller can adjust the power supply voltage provided to the door pusher according to the weight value detected by the weight sensor, and enable the door pusher to provide different thrusts to the push rod; the power supply voltage provided by the controller to the door pusher can increase with the increase of the weight value detected by the weight sensor, and enable the door pusher to provide a greater thrust to the push rod.

[0019] The embodiments of the present invention have the following advantages and positive effects:

[0020] In the refrigerator of the embodiment of the utility model, a weight sensor is arranged on the door to detect the weight of the door, and the push rod of the door pusher is extended out of the front wall of the box body, so that the door can be pushed to open automatically. The controller is connected with the detection signal of the weight sensor and is electrically connected with the door pusher, so that the controller can adjust the power supply voltage provided to the door pusher according to the weight value detected by the weight sensor, and the door pusher provides different thrusts to the push rod. As the weight in the door increases, the power supply voltage provided to the door pusher increases, and the thrust provided by the door pusher to the push rod becomes larger, so that the door pushing power of the push rod increases. In this way, no matter how the weight of the door changes, the push rod can easily push the door open, so as to optimize the automatic door opening function of the refrigerator and realize automatic adjustment of the door opening thrust. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a structural schematic diagram of a refrigerator according to an embodiment of the utility model.

[0022] Figure 2 yes Figure 1 Schematic diagram of the structure in another state.

[0023] Figure 3 yes Figure 2 Schematic diagram of the internal structure.

[0024] Figure 4 yes Figure 3 Schematic diagram of the structure from another perspective.

[0025] Figure 5 yes Figure 2 A front view of .

[0026] Figure 6 yes Figure 5 AA section view.

[0027] Figure 7 yes Figure 6 Schematic diagram of the local enlarged structure in.

[0028] Figure 8 yes Figure 5 Side view of .

[0029] Fig. 9 yes Figure 8 Schematic diagram of the local enlarged structure in.

[0030] Fig.10 yes Figure 2 Schematic diagram of the local enlarged structure in.

[0031] Fig.11 yes Figure 3 Schematic diagram of the local enlarged structure in.

[0032] Fig.12 yes Fig.11 Schematic diagram of the structure of the middle door pusher.

[0033] Fig.13 yes Figure 8 Schematic diagram of the enlarged structure of area B in the middle.

[0034] The description of the accompanying drawings is as follows: 1. Box body; 10. Storage room; 101. Telescopic opening; 11. Box core; 12. Shelf; 13. Compressor; 14. Condenser; 15. Press chamber; 16. Installation cavity; 2. Box door; 21. Door shelf; 22. Door opening switch; 23. Lower end cover; 3. Door pusher; 31. Push rod; 311. Abutment part; 4. Weight sensor. DETAILED DESCRIPTION

[0035] Typical embodiments that embody the features and advantages of the present invention will be described in detail in the following description. It should be understood that the present invention can have various changes in different embodiments without departing from the scope of the present invention, and the descriptions and illustrations therein are essentially for illustrative purposes rather than for limiting the present invention.

[0036] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0037] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0038] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" 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 or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0039] Among existing refrigerators, some refrigerators use a door pusher to open the door, so that the refrigerator has an automatic door opening function. However, the door pusher of a conventional refrigerator has a certain force for pushing the door. When there is no food on the door shelf inside the door, the door becomes light, and the door push force is too large, causing the door to suddenly bounce open and accidentally injure the user. When there are a lot of heavy food on the door shelf inside the door, the door becomes heavy, and the door push force is too small, and the door cannot be pushed open.

[0040] For the convenience of description, unless otherwise specified, the directions of up, down, left, right, front and back in this article are all based on the state of the refrigerator when it is in use, with the refrigerator door being the front and the opposite direction being the back, the vertical direction being the up and down direction, and the horizontal direction being the left and right direction.

[0041] Figure 1 It is a structural schematic diagram of a refrigerator according to an embodiment of the utility model. Figure 2 yes Figure 1 Schematic diagram of the structure in another state.

[0042] See also Figure 1 to Figure 2As shown, the refrigerator provided in the embodiment of the utility model may include a box body 1. The box body 1 may adopt a hollow structure of a rectangular parallelepiped. It is understandable that in other embodiments, the box body 1 may also adopt a hollow shell structure of other shapes.

[0043] In some embodiments, a storage room 10 may be formed in the box body 1. The storage room 10 may be used as an independent storage space, and may be used as a refrigerating room, a temperature-changing room, a freezing room, etc., to meet different storage requirements such as refrigeration and freezing according to different types of stored items.

[0044] In some embodiments, a plurality of storage chambers 10 may be provided in the housing 1. The plurality of storage chambers 10 may be arranged in the housing 1 in a manner of being divided up and down or left and right.

[0045] See also Figure 1 to Figure 2 As shown, in some embodiments, a door 2 may be provided on the front side of the cabinet 1. The door 2 may be used to open and close the storage chamber 10. The door 2 may be connected to the cabinet 1 by a hinge, so that the door 2 of the refrigerator may rotate around the axis of the hinge to open and close the door 2 of the refrigerator, thereby opening and closing the corresponding storage chamber 10.

[0046] In some embodiments, multiple doors 2 may be provided. Multiple doors 2 may be provided in a one-to-one correspondence with multiple storage chambers 10. It should be noted that, in other embodiments, multiple doors 2 may open and close a storage chamber 10 at the same time.

[0047] Figure 3 yes Figure 2 Schematic diagram of the internal structure. Figure 4 yes Figure 3 Schematic diagram of the structure from another perspective.

[0048] See also Figures 1 to 4 As shown, in some embodiments, a box liner 11 may be provided in the box body 1. The storage room 10 may be formed in the box liner 11. Multiple box liner 11 may be provided in the box body 1. Multiple box liner 11 may be arranged in the box body 1 in an upper and lower partition or a left and right partition. One or more storage rooms 10 may be formed in each box liner 11.

[0049] In some embodiments, a foam layer (not shown) may be provided in the box body 1. The foam layer may be formed in the space between the outer wall of the box 11 and the inner wall of the box body 1. The foam layer may be used to insulate the box 11 and the interior of the storage chamber 10 to achieve the heat preservation performance of the refrigerator.

[0050] See also Figure 3 to Figure 4As shown, in some embodiments, a shelf 12 may be provided inside the box 11. The shelf 12 may be arranged in a transversely extending manner. The shelf 12 may be arranged horizontally. The shelf 12 may be used to separate the space of the storage chamber 10 inside the box 11 up and down, so that food materials can be classified and stored in different spaces.

[0051] In some embodiments, a plurality of shelves 12 may be provided inside the box 11. The plurality of shelves 12 may be arranged in sequence up and down. The plurality of shelves 12 may separate the space of the storage chamber 10 up and down to form a plurality of sub-storage spaces. Different ingredients may be classified and placed in the sub-storage spaces on different shelves 12.

[0052] See also Figure 3 to Figure 4 As shown, in some embodiments, a door shelf 21 may be provided on the inner side wall of the door 2. The inner space of the door shelf 21 may be used to store food or other items. The door shelf 21 may be detachably provided on the inner side wall of the door 2.

[0053] In some embodiments, a plurality of door shelves 21 may be provided on the inner side wall of the door 2. The plurality of door shelves 21 may be arranged on the inner side wall of the door 2 in an upper and lower interval. It should be noted that the number of door shelves 21 and the spacing between upper and lower adjacent door shelves 21 may be adjusted as required, and are not limited here.

[0054] See also Figures 1 to 4 As shown, in some embodiments, a refrigeration system may be provided in the cabinet 1. The refrigeration system may be provided inside the cabinet 1. The refrigeration system may be used to provide cold air inside the refrigerator to maintain a low temperature environment of each storage chamber 10.

[0055] In some embodiments, the refrigeration system may include a compressor 13. The compressor 13 may compress the refrigerant into high-temperature and high-pressure refrigerant vapor.

[0056] In some embodiments, the refrigeration system may include a condenser 14. The compressor 13 may deliver the compressed refrigerant to the condenser 14. The condenser 14 may condense high-temperature and high-pressure refrigerant vapor.

[0057] In some embodiments, the refrigeration system may include a throttling device (not shown). The condenser 14 may deliver the condensed refrigerant to the throttling device. The throttling device may be a capillary tube. The throttling device may be used to throttle and reduce the pressure of the refrigerant.

[0058] In some embodiments, the refrigeration system may include an evaporator (not shown). The throttling device may deliver the throttled and depressurized refrigerant to the evaporator. The evaporator may be used to evaporate and boil the refrigerant vapor so as to absorb the heat of the surrounding medium.

[0059] In some embodiments, the compressor 13 , the condenser 14 , the throttling device, and the evaporator may be sequentially connected to form a refrigeration circuit, in which the refrigerant may circulate to achieve refrigeration of the interior of the box 1 .

[0060] See also Figures 1 to 4 As shown, in some embodiments, a press chamber 15 may be provided in the box body 1. The press chamber 15 may be provided in the bottom area of ​​the box body 1. The press chamber 15 may be located at the rear lower side of the storage chamber 10. The press chamber 15 may be located at the rear lower side of the box 11. The compressor 13 may be provided in the press chamber 15.

[0061] It should be noted that, in some other embodiments, the press chamber 15 may also be disposed at other positions such as the top or side of the box body 1 .

[0062] In some embodiments, the condenser 14 may be attached to the outer wall of the box 11. The condenser 14 may be attached to the rear wall of the box 11. The condenser 14 may be disposed in the foam layer between the rear wall of the box 11 and the rear wall of the box body 1.

[0063] It should be noted that in other embodiments, the condenser 14 may also be disposed in the compressor chamber 15 .

[0064] In some embodiments, an evaporation chamber (not shown) may be provided in the housing 1. An evaporator may be provided in the evaporation chamber. The evaporator may be used to absorb heat in the evaporation chamber, so that a large amount of cold air is formed in the evaporation chamber. The cold air is transported to the storage chamber 10, so that a low-temperature storage function in the storage chamber 10 can be realized.

[0065] In some embodiments, a duct assembly (not shown) may be provided in the box body 1. The duct assembly may be provided inside the box 11. An air supply duct (not shown) may be formed in the duct assembly. The air supply duct may connect the evaporator and the storage chamber 10, and deliver cold air to the storage chamber 10, thereby realizing the low-temperature storage function in the storage chamber 10.

[0066] In some embodiments, the air duct assembly may be disposed on the rear wall inside the box 11. An evaporation chamber may be formed between the air duct assembly and the rear wall inside the box 11.

[0067] Figure 5 yes Figure 2 A front view of . Figure 6 yes Figure 5 AA section view. Figure 7 yes Figure 6 Schematic diagram of the local enlarged structure in. Figure 8 yes Figure 5 Side view of . Fig. 9 yes Figure 8 Schematic diagram of the local enlarged structure in. Fig.10 yes Figure 2 Schematic diagram of the local enlarged structure in.

[0068] See also Figures 5 to 10 As shown, in some embodiments, the refrigerator may include a door pusher 3. The door pusher 3 may be arranged inside the cabinet 1. The door pusher 3 may have a push rod 31. The push rod 31 may be movably arranged at the front side of the door pusher 3. The door pusher 3 may provide a thrust to the push rod 31, so that the push rod 31 may extend out of the front wall of the cabinet 1, so that the push rod 31 may abut against the cabinet door 2, and then the cabinet door 2 may be pushed to open. Therefore, the automatic door opening function of the refrigerator may be realized by the door pusher 3 and the push rod 31 providing the door opening thrust.

[0069] In some embodiments, the door pusher 3 may include a motor (not shown). The motor may be disposed inside the door pusher 3. The output end of the motor may be in transmission connection with the push rod 31. When the door pusher 3 is working, the motor may provide a thrust to the push rod 31, so that the push rod 31 extends out of the front wall of the box body 1 and pushes the door 2 to open.

[0070] In some embodiments, the door pusher 3 may include a transmission gear (not shown). The transmission gear may be disposed inside the door pusher 3. The transmission gear may be disposed between the output end of the motor and the push rod 31. The output end of the motor may be connected to the push rod 31 through the transmission gear. When the motor is running, the output end of the motor can drive the transmission gear to rotate, and then the push rod 31 can be driven to move toward the front side of the box body 1 through the transmission gear.

[0071] In some embodiments, a rack (not shown) may be provided on the push rod 31. The transmission gear may be meshed and connected to the rack. Therefore, when the motor is running, the output end of the motor can drive the transmission gear to rotate, and then push the push rod 31 to move toward the front side of the box body 1 through the rack.

[0072] In some embodiments, the door pusher 3 may be provided with a plurality of transmission gears. The plurality of transmission gears may be meshed and connected in sequence. The plurality of transmission gears may be provided between the output end of the motor and the push rod 31.

[0073] Fig.11 yes Figure 3 Schematic diagram of the local enlarged structure in.

[0074] See also Figure 10 to Figure 11 As shown, in some embodiments, the door pusher 3 can be arranged in the area between the outer wall of the box 11 and the inner wall of the box body 1. The door pusher 3 can be arranged in the foam layer between the outer wall of the box 11 and the inner wall of the box body 1.

[0075] In some embodiments, a telescopic opening 101 may be provided on the front wall of the box body 1. The telescopic opening 101 may be provided at the front side of the door pusher 3. The push rod 31 may be movably provided at the telescopic opening 101. The rear end of the push rod 31 may be extended into the box body 1. The front end of the push rod 31 may extend out of the telescopic opening 101 and abut against the box door 2, thereby pushing the box door 2 to open.

[0076] In some embodiments, the door pusher 3 may be disposed in the area between the top of the box 11 and the top wall of the box body 1. The telescopic opening 101 may be disposed on the front wall at the top of the box body 1.

[0077] In some embodiments, a mounting cavity 16 may be provided above the top of the inner guard. The mounting cavity 16 may be arranged in the area between the top of the box liner 11 and the top wall of the box body 1. The door pusher 3 may be installed in the mounting cavity 16. The telescopic opening 101 may be provided at the front side of the mounting cavity 16. The mounting cavity 16 may be connected to the telescopic opening 101. The push rod 31 may be extended and arranged along the front-to-back direction of the box body 1. The rear end of the push rod 31 may be extended and arranged in the mounting cavity 16. The front end of the push rod 31 may be extended and arranged toward the telescopic opening 101.

[0078] Fig.12 yes Fig.11 Schematic diagram of the structure of the middle door pusher 3.

[0079] See also Figures 10 to 12 As shown, in some embodiments, the front end of the push rod 31 may be provided with an abutment portion 311. The abutment portion 311 may be detachably provided at the front end of the push rod 31. The width dimension of the abutment portion 311 may be greater than the diameter of the push rod 31. The abutment portion 311 may be made of a flexible material. The abutment portion 311 may be used to abut against the inner side wall of the door 2. The abutment portion 311 may be movably provided at the telescopic opening 101. When the push rod 31 is pushed forward, the abutment portion 311 may abut against the inner side wall of the door 2, thereby pushing the door 2 to open. When the push rod 31 is retracted backward, the abutment portion 311 may be retracted into the telescopic opening 101.

[0080] It should be noted that, in other embodiments, the abutting portion 311 may also be integrally formed at the front end of the push rod 31 .

[0081] See also Figures 1 to 12 As shown, in some embodiments, the refrigerator may include a controller (not shown). The controller may be electrically connected to the door pusher 3. The controller may be electrically connected to the motor in the door pusher 3. The controller may be used to control the operation of the door pusher 3. The controller may control the door pusher 3 to open or close. The controller may provide a power supply voltage to the door pusher 3, and then provide an operating voltage to the motor in the door pusher 3, so that the motor can provide thrust to the push rod 31.

[0082] In some embodiments, the controller can adjust and change the power supply voltage provided to the door pusher 3, and then provide different working voltages to the motor, so that the motor can provide different thrusts to the push rod 31. For example, the controller can use a voltage divider circuit, and use the voltage divider principle of the circuit to automatically adjust the resistance value through the controller, thereby adjusting the power supply voltage provided to the door pusher 3.

[0083] See also Figures 1 to 12 As shown, in some embodiments, a door opening switch 22 may be provided on the refrigerator body 1. The door opening switch 22 may be connected to the controller signal. When the door opening switch 22 is touched or pressed by the user, the door opening switch 22 may transmit a door opening signal to the controller, and the controller may provide a power supply voltage to the door pusher 3, so that the push rod 31 generates a thrust, thereby realizing automatic opening of the door 2.

[0084] In some embodiments, the door opening switch 22 may be disposed on the box door 2. The door opening switch 22 may be disposed on the front wall of the box door 2. It should be noted that, in other embodiments, the door opening switch 22 may also be disposed at other positions of the box door 2, or the door opening switch 22 may also be disposed at other positions of the box body 1.

[0085] Fig.13 yes Figure 8 Schematic diagram of the enlarged structure of area B in the middle.

[0086] See also Figures 1 to 13 As shown, in some embodiments, the refrigerator may include a weight sensor 4. The weight sensor 4 may be provided on the door 2. The weight sensor 4 may be used to detect the weight of the door 2. The weight sensor 4 may be connected to a controller signal. The weight sensor 4 may transmit the detected weight value to the controller. The controller may adjust the power supply voltage provided to the door pusher 3 according to the weight value detected by the weight sensor 4, thereby causing the door pusher 3 to provide different thrusts to the push rod 31. It should be noted that the weight value detected by the weight sensor 4 may increase as the weight of the items in the door shelf 21 increases.

[0087] When more food materials or articles are placed in the door shelf 21 inside the box door 2, the weight value detected by the weight sensor 4 increases, and the power supply voltage provided by the controller to the door pusher 3 can increase accordingly. That is, the power supply voltage provided by the controller to the door pusher 3 can increase as the weight value detected by the weight sensor 4 increases, so that the door pusher 3 can provide a greater thrust to the push rod 31, so that the box door 2 can be opened easily, effectively preventing the door from being unable to be opened due to too small a thrust to open the door.

[0088] When lighter food materials or articles are placed in the door shelf 21 inside the cabinet door 2, the weight value detected by the weight sensor 4 becomes smaller, and the power supply voltage provided by the controller to the door pusher 3 can also become smaller accordingly. That is, the power supply voltage provided by the controller to the door pusher 3 can be reduced as the weight value detected by the weight sensor 4 becomes smaller, so that the door pusher 3 can provide a smaller thrust to the push rod 31 to prevent the door from being opened with excessive thrust, thereby preventing the cabinet door 2 from suddenly bouncing open and accidentally injuring the user.

[0089] It should be noted that, in some embodiments, the user can press or touch the door opening switch 22 on the door 2 to make the door opening switch 22 generate a door opening signal. The controller can control the weight sensor 4 to detect the weight value of the door 2 according to the door opening signal, and adjust and select different power supply voltages to the door pusher 3 according to the weight value detected by the weight sensor 4. Different power supply voltages can make the push rod 31 generate different thrusts. The greater the weight of the door 2, the greater the thrust, thereby realizing automatic and easy opening of the door 2.

[0090] In some other embodiments, the user can also connect to the controller signal through an external remote controller. The external remote controller can connect to the controller signal through an infrared signal, a Bluetooth signal or a WiFi signal. Therefore, the controller, the weight sensor 4 and the door pusher 3 can be driven to work through the external remote controller.

[0091] In some embodiments, the controller can adjust and change the power supply voltage value provided to the motor according to the weight value of the door 2 detected by the weight sensor 4, so that the motor provides different thrusts to the door pusher 3. The controller can divide the weight value detected by the weight sensor 4 into a plurality of different weight value intervals. The plurality of different weight value intervals correspond to different power supply voltages, and the higher the weight value, the greater the power supply voltage. This solution allows the refrigerator door 2 to be easily pushed open regardless of what kind of food is placed in the refrigerator door 2.

[0092] See also Figure 8 and Fig.13 As shown, in some embodiments, a lower end cover 23 may be provided at the bottom of the door 2. The weight sensor 4 may be provided on the lower end cover 23. When more items are placed on the door shelf 21 in the door 2, the lower end cover 23 of the door 2 is deformed, so that the weight value detected by the weight sensor 4 at the bottom of the door 2 becomes larger, and then the push rod 31 may have a greater door opening thrust through the controller.

[0093] It should be noted that, in some embodiments, the weight sensor 4 may also be disposed on the rotation axis of the door 2 , or at other positions of the door 2 .

[0094] In some embodiments, the weight sensor 4 may be any one of a resistive strain type weight sensor 4 , a piezoresistive effect type weight sensor 4 , and a crystal oscillation type weight sensor 4 .

[0095] In some embodiments, the weight sensor 4 may be a resistance strain type weight sensor 4. The weight sensor 4 may include an elastic body, a resistance strain gauge and a detection circuit. The resistance strain gauge may be attached to the surface of the elastic body. The detection circuit may be electrically connected to the resistance strain gauge. When an external force acts on the elastic body, the elastic body undergoes elastic deformation, and the resistance strain gauge may be deformed accordingly. The resistance value of the resistance strain gauge changes due to the deformation, and the detection circuit may convert the resistance value change of the resistance strain gauge into an electrical signal, thereby converting the weight of the door 2 into an electrical signal.

[0096] In some embodiments, the weight sensor 4 can be used to detect the weight of the door shelf 21. The controller can adjust the power supply voltage provided to the door pusher 3 according to the weight value of the door shelf 21 detected by the weight sensor 4, and then adjust the thrust provided by the door pusher 3 to the push rod 31. When the items in the door shelf 21 become heavier, the weight value detected by the weight sensor 4 becomes larger. The controller can adjust the power supply voltage provided to the door pusher 3 to become larger, and the thrust provided by the door pusher 3 to the push rod 31 to become larger according to the weight value detected by the weight sensor 4. Conversely, when the items in the door shelf 21 become lighter, the weight value detected by the weight sensor 4 becomes smaller. The controller can adjust the power supply voltage provided to the door pusher 3 to become smaller, and the thrust provided by the door pusher 3 to the push rod 31 to become smaller according to the weight value detected by the weight sensor 4. In this way, no matter what kind of food the user puts, he can easily push open the box door 2.

[0097] In some embodiments, there may be multiple weight sensors 4. The multiple weight sensors 4 may be arranged one by one on multiple door shelves 21. The controller can adjust the power supply voltage provided to the door pusher 3 according to the sum of the weight values ​​detected by the multiple weight sensors 4, and further adjust the thrust provided by the door pusher 3 to the push rod 31.

[0098] Based on the above technical solution, the embodiment of the utility model has at least the following advantages and positive effects:

[0099] In the refrigerator of the embodiment of the utility model, a weight sensor 4 is arranged on the door 2 to detect the weight of the door 2, and the push rod 31 of the door pusher 3 is extended out of the front wall of the box body 1, so that the door 2 can be pushed to open automatically. The controller is connected to the detection signal of the weight sensor 4 and is electrically connected to the door pusher 3, so that the controller can adjust the power supply voltage provided to the door pusher 3 according to the weight value detected by the weight sensor 4, and the door pusher 3 provides different thrusts to the push rod 31. As the weight in the door 2 increases, the power supply voltage provided to the door pusher 3 increases, and the thrust provided by the door pusher 3 to the push rod 31 becomes larger, so that the door pushing power of the push rod 31 increases. In this way, no matter how the weight of the door 2 changes, the push rod 31 can easily push the door 2 open, so that the automatic door opening function of the refrigerator can be optimized, and the door opening thrust of the door 2 can be automatically adjusted.

[0100] Although the utility model has been described with reference to several typical embodiments, it should be understood that the terms used are illustrative and exemplary, rather than restrictive. Since the utility model can be implemented in a variety of forms without departing from the spirit or essence of the utility model, it should be understood that the above-mentioned embodiments are not limited to any of the aforementioned details, but should be widely interpreted within the spirit and scope defined by the attached claims, so all changes and modifications falling within the scope of the claims or their equivalents should be covered by the attached claims.

Claims

1. A refrigerator, characterized in that: include: A box body, the box body forming an outer shell of the refrigerator; A box liner, wherein a storage chamber is formed in the box liner; A box door, the box door is hinged to the front side of the box body, and the box door is used to open and close the storage room; A weight sensor, the weight sensor is arranged on the box door, and the weight sensor can detect the weight of the box door; A door pusher, the door pusher is arranged in the box body, the door pusher has a push rod, and the door pusher can drive the push rod to extend out of the front wall of the box body to push the box door to open; A controller, the controller is connected to the weight sensor signal, the controller is electrically connected to the door pusher; the controller can provide a power supply voltage to the door pusher; Wherein, the controller can adjust the power supply voltage provided to the door pusher according to the weight value detected by the weight sensor, and make the door pusher provide different thrusts to the push rod; The power supply voltage provided by the controller to the door pusher can increase as the weight value detected by the weight sensor increases, so that the thrust provided by the door pusher to the push rod increases.

2. The refrigerator according to claim 1, characterized in that: The box body is provided with a door opening switch, and the door opening switch is connected to the controller signal; When the door opening switch is touched or pressed, the controller can provide a power supply voltage to the door pusher according to the weight value detected by the weight sensor, so that the push rod generates a thrust to automatically open the door.

3. The refrigerator according to claim 2, characterized in that: The door opening switch is arranged on the front side wall of the box door.

4. The refrigerator according to claim 1, characterized in that: The door pusher comprises a motor, the motor is transmission-connected to the push rod, and the motor is electrically connected to the controller; The controller is capable of providing different operating voltages to the motor so that the motor provides different thrusts to the push rod.

5. The refrigerator according to claim 1, characterized in that: The door pusher is arranged in the area between the outer wall of the box liner and the inner wall of the box body; a telescopic opening is opened on the front wall of the box body, and the push rod is movably arranged at the telescopic opening.

6. The refrigerator according to claim 5, characterized in that: The door pusher is arranged in the area between the top of the box liner and the top wall of the box body, and the telescopic opening is arranged on the front wall of the top end of the box body.

7. The refrigerator according to claim 6, characterized in that An installation cavity is provided above the top of the box, and the door pusher is arranged in the installation cavity; The telescopic opening is located at the front side of the installation cavity, the push rod is extended along the front-rear direction of the box body, the rear end of the push rod is extended into the installation cavity, and the front end of the push rod is extended toward the telescopic opening.

8. The refrigerator according to claim 1, characterized in that A door shelf is provided on the inner side wall of the box door, and articles are placed in the door shelf; the weight value detected by the weight sensor can increase as the weight of the articles in the door shelf increases.

9. The refrigerator according to claim 1, characterized in that: A lower end cover is arranged at the bottom end of the box door, and the weight sensor is arranged on the lower end cover.

10. The refrigerator according to claim 1, characterized in that: The weight sensor is any one of a resistance strain type weight sensor, a piezoresistive effect type weight sensor, and a crystal oscillation type weight sensor.

11. A refrigerator, characterized in that: include: A box body, the box body forming an outer shell of the refrigerator; A box liner, wherein a storage chamber is formed in the box liner; A box door, the box door is hinged to the front side of the box body, and the box door is used to open and close the storage chamber; a door shelf is provided on the inner wall of the box door; A weight sensor, the weight sensor is arranged on the box door, and the weight sensor can detect the weight of the door shelf; A door pusher, the door pusher is arranged in the box body, the door pusher has a push rod, and the door pusher can drive the push rod to extend out of the front wall of the box body to push the box door to open; A controller, the controller is connected to the weight sensor signal, the controller is electrically connected to the door pusher; the controller can provide a power supply voltage to the door pusher; Wherein, the controller can adjust the power supply voltage provided to the door pusher according to the weight value detected by the weight sensor, and make the door pusher provide different thrusts to the push rod; The power supply voltage provided by the controller to the door pusher can increase as the weight value detected by the weight sensor increases, so that the thrust provided by the door pusher to the push rod increases.

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