Refrigerator

Abstract

The invention discloses a refrigerator, and relates to the technical field of refrigeration equipment. The storage container is arranged in the storage chamber, and a bearing part is arranged on the side edge of the storage container; the load recognition mechanism comprises a transmitting element and a receiving element, and the transmitting element and the receiving element are located on the two opposite sides of the storage container respectively; the elastic mechanism is arranged between the supporting part and the bearing part; and the control part is used for controlling the temperature of the storage chamber. The elastic mechanism is additionally arranged between the bearing part of the storage container and the supporting part of the storage chamber, the load recognition mechanisms are arranged on the two sides of the storage container, and when the load weight of the storage container exceeds the rated load capacity, the elastic mechanism deforms; and the transmitting element and the receiving element of the load identification mechanism receive an electric signal for generating a transmitting signal and transmit the electric signal to the control part to trigger a rapid temperature pulling program and lower the temperature control temperature, so that the fresh-keeping period of food materials is prolonged under the condition of better ensuring that the load capacity is relatively large.

Description

Technical Field

[0001] The present invention relates to the technical field of refrigeration equipment, and particularly to a refrigerator. Background Art

[0002] With the rise of fresh food e-commerce in recent years, people's demand for long-term storage of meat and fresh food ingredients has gradually shifted to short-term storage. In recent years, refrigerator companies have developed preservation functions for short-term preservation of meat, such as zero-degree preservation and micro-freezing preservation. Compared with traditional frozen preservation, the short-term preservation function does not require thawing, and the user experience is better. However, there are also deficiencies. The preservation period is short. Especially under the condition of a large drawer load, the preservation effect is greatly reduced, which has become one of the pain points for users. Summary of the Invention

[0003] The present invention aims to solve at least one of the technical problems existing in the prior art. For this purpose, the present invention provides a refrigerator that can extend the preservation period of food ingredients under the condition of a large load.

[0004] The refrigerator according to the first aspect embodiment of the present invention includes: a box body, a storage container, a load identification mechanism, an elastic mechanism, and a control component. The box body is provided with a storage compartment, and support portions are provided on two opposite side walls of the storage compartment; the storage container is arranged in the storage compartment, a bearing portion is provided on the side of the storage container, and the bearing portion abuts against the support portion; the load identification mechanism is arranged on the side wall of the storage compartment, and the load identification mechanism includes a transmitting element and a receiving element, and the transmitting element and the receiving element are respectively located on two opposite sides of the storage container; the elastic mechanism is arranged between the support portion and the bearing portion; the control component is used to control the temperature of the storage compartment; wherein, the refrigerator has a first state and a second state. In the first state, the storage container blocks the transmission signal between the transmitting element and the receiving element; in the second state, the elastic mechanism deforms due to the increase in the load of the storage container, thereby causing the storage container to descend, the receiving element receives the transmission signal of the transmitting element to generate an electrical signal, and transmits it to the control component to lower the temperature.

[0005] The refrigerator according to the embodiment of the present invention has at least the following beneficial effects: By adding an elastic mechanism between the bearing portion of the storage container and the support portion of the storage compartment, and arranging a load identification mechanism on both sides of the storage container, when the load weight of the storage container exceeds the rated load, the elastic mechanism deforms, so that the transmitting element and the receiving element of the load identification mechanism receive the transmission signal to generate an electrical signal, and transmit it to the control component, triggering a rapid temperature reduction program and lowering the controlled temperature, better ensuring the extension of the preservation period of food ingredients under the condition of a large load.

[0006] According to some embodiments of the present invention, the emitting element is an infrared emitting sensor, and the receiving element is an infrared receiving sensor.

[0007] According to some embodiments of the present invention, a notch through which the emitted signal can pass is provided on the side wall of the storage container.

[0008] According to some embodiments of the present invention, the supporting portion is configured as a guide rail, and the guide rail includes a fixing member, a ball, and a movable member. The fixing member is fixed to the side wall of the storage compartment, the movable member is movably connected to the fixing member through the ball, the storage container is connected to the movable member, and the emitting element is fixed to the movable member.

[0009] According to some embodiments of the present invention, the movable member is provided with a connecting boss, and the bearing portion is provided with a connecting hole that cooperates with the connecting boss.

[0010] According to some embodiments of the present invention, the refrigerator further includes an air duct assembly provided at the rear of the storage container, and the air duct assembly is provided with an air outlet and an air return port that communicate with the storage container.

[0011] According to some embodiments of the present invention, the control component is provided in the air duct assembly, and the control component can sense the space temperature of the storage container and control the air supply of the air duct assembly.

[0012] According to some embodiments of the present invention, the elastic mechanism includes an elastic member and a movable cover. The bearing portion is provided with an installation groove, the movable cover and the elastic member are connected and installed in the installation groove, and the movable cover abuts against the supporting portion.

[0013] According to some embodiments of the present invention, the elastic mechanism further includes a fixed seat, the fixed seat is installed in the installation groove, the fixed seat is provided with a guiding hole, and at least a part of the movable cover is located in the guiding hole.

[0014] According to some embodiments of the present invention, a limiting hole is provided on the side wall of the fixed seat, and a limiting protrusion located in the limiting hole is provided on the movable cover.

[0015] According to some embodiments of the present invention, along the direction perpendicular to the moving direction of the movable cover, an opening communicating with the installation groove is provided on the side wall of the installation groove, and the opening is configured such that the fixed seat can be inserted into the installation groove from the opening.

[0016] According to some embodiments of the present invention, a limiting portion is provided on the outer side wall of the fixed seat, and the limiting portion is located in the opening to limit the fixed seat from disengaging from the installation groove along the moving direction of the movable cover.

[0017] Additional aspects and advantages of the present invention will be given in part in the following description, become apparent in part from the following description, or be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The present invention will be further described below in conjunction with the drawings and embodiments, where:

[0019] Figure 1 is a schematic diagram of a refrigerator according to an embodiment of the present invention;

[0020] Figure 2 is Figure 1 a schematic diagram of the refrigerator shown after removing the door body and drawers;

[0021] Figure 3 is a schematic diagram of the positions of the drawer, load identification mechanism, and elastic mechanism;

[0022] Figure 4 is Figure 1 a cross-sectional view of an embodiment of the refrigerator shown;

[0023] Figure 5 is Figure 4 an enlarged view of part A shown;

[0024] Figure 6 is Figure 4 an exploded view of the drawer, guide rail, and elastic mechanism shown.

[0025] Reference numerals:

[0026] 101, box body; 102, drawer;

[0027] 201, air duct housing; 202, air outlet; 203, air return opening; 204, control component; 205, guide rail; 206, cover plate; 207, transmitting element; 208, receiving element;

[0028] 301, elastic mechanism; 302, bearing part;

[0029] 401, door body; 402, refrigerating compartment; 403, variable temperature compartment; 404, freezing compartment; 405, load identification mechanism; 406, notch;

[0030] 501, elastic member; 502, movable cover; 503, cylindrical part; 504, flat part; 505, fixed seat; 506, guide hole; 507, limiting hole; 508, limiting projection; 509, limiting part;

[0031] 601, connecting hole; 602, mounting groove; 603, opening; 604, fixing member; 605, movable member; 606, connecting boss. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0032] Embodiments of the present invention will be described in detail below. Examples of the embodiments are shown in the accompanying drawings, where the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention and should not be construed as a limitation of the present invention.

[0033] In the description of the present invention, it should be understood that with regard to the orientation description, such as the orientation or positional relationship indicated by up, down, front, back, left, right, etc., is based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention.

[0034] In the description of the present invention, the meaning of several is one or more, the meaning of multiple is more than two, greater than, less than, exceeding, etc. are understood as not including the recited number, and above, below, within, etc. are understood as including the recited number. If the first and second are described only for the purpose of distinguishing technical features, they should not be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features or implicitly indicating the sequence relationship of the indicated technical features.

[0035] In the description of the present invention, unless otherwise clearly defined, words such as setting, installing, connecting, etc. should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meaning of the above words in the present invention in combination with the specific content of the technical solution.

[0036] With the rise of fresh food e-commerce in recent years, people's demand for meat and fresh food ingredients has gradually shifted from long-term storage to short-term storage. At present, each refrigerator enterprise has developed a fresh-keeping function for short-term preservation of meat, such as zero-degree fresh-keeping, micro-freezing fresh-keeping, etc. Compared with traditional frozen fresh-keeping, the short-term fresh-keeping function does not require thawing, and the user experience is better. However, there are also some other deficiencies, such as a short fresh-keeping period and a significant reduction in the fresh-keeping effect when the load of the drawer is large. Among them, the decline in the fresh-keeping effect has become one of the pain points for users.

[0037] Based on this, the embodiments of the present invention provide a refrigerator. By adding an elastic mechanism and a load recognition mechanism between the bearing part of the storage container and the support part of the storage compartment, when the load weight of the storage container exceeds the rated load amount, the elastic mechanism deforms, causing the transmitting element and the receiving element of the load recognition mechanism to approach each other and generate an electrical signal, which is transmitted to the control component to trigger a rapid temperature reduction program and lower the controlled temperature, better ensuring the extension of the fresh-keeping period of the ingredients when the load is large.

[0038] The following further elaborates on the embodiments of the present invention with reference to the accompanying drawings.

[0039] Refer to Figures 1 to 4 As shown, it can be understood that the refrigerator includes a cabinet 101 and a door 401. The main functions of the cabinet 101 and the door 401 are to isolate the internal and external air and ensure a low-temperature environment inside the refrigerator. The inside of the cabinet 101 is made of high-efficiency thermal insulation materials such as polyurethane, which effectively maintains the low-temperature environment inside the cabinet and reduces energy consumption. The cabinet 101 includes side panels, a back panel, upper / middle / lower beams, a liner, a bottom plate assembly, etc. Storage compartments such as a refrigerating compartment 402, a variable-temperature compartment 403, or a freezing compartment 404 are formed inside the cabinet 101. The door 401 is connected to the cabinet 101 and can close the openings of storage compartments such as the refrigerating compartment 402, the variable-temperature compartment 403, and the freezing compartment 404, making them relatively airtight spaces. A sealing strip is provided inside the door 401 to ensure the sealing performance of the cabinet 101 and prevent external heat from entering the refrigerator. At the same time, the sealing strip can also reduce the leakage of cold air and improve the energy efficiency of the refrigerator.

[0040] It can be understood that the main function of the refrigerating compartment 402 is to preserve and refrigerate food. By maintaining a low-temperature environment, the refrigerating compartment can extend the shelf life of food and keep the freshness and taste of food. The temperature of the refrigerating compartment 402 can be adjusted as needed. Generally speaking, the appropriate temperature of the refrigerating compartment 402 is between 4°C and 8°C. Users can adjust the temperature through the thermostat or touch screen on the refrigerator door. The refrigerating compartment 402 can store various foods that need to be refrigerated, such as fruits, vegetables, beverages, dairy products, etc.

[0041] The main function of the variable-temperature compartment 403 is to provide flexible storage space. The variable-temperature compartment can change its temperature according to the needs of users, so as to meet the storage needs of different foods. The temperature of the variable-temperature compartment 403 can also be adjusted through the thermostat or touch screen on the refrigerator door. Users can set the temperature within different ranges as needed, such as 0°C to -10°C or -7°C to -18°C, etc. The variable-temperature compartment 403 can store various foods that need to be stored at special temperatures, such as meats, fishes, cold drinks, etc.

[0042] The main function of the freezing compartment 404 is to quickly freeze food at an extremely low temperature to extend the shelf life of food and maintain the nutritional value of food. The temperature of the freezing compartment 404 is generally low, usually below -18°C. Users can adjust the temperature through the thermostat or touch screen on the refrigerator door. The freezing compartment 404 can store various foods that need to be frozen, such as meats, seafood, ice cream, etc.

[0043] Refer to Figure 2 and Figure 4As shown, it can be understood that the refrigerator further includes an air duct assembly, which mainly consists of an air duct housing 201, a damper, a fan, a motor, etc. An air outlet 202 is provided on the air duct housing 201. The damper can control whether cold air enters the air outlet 202, and the fan and the motor cause the cold air to flow inside the air duct housing 201. The main function of the air duct assembly is to guide the cold air to circulate inside the refrigerator, thereby taking away the heat from the inside of the refrigerator to achieve a refrigeration effect. A return air outlet 203 is also provided on the air duct housing 201. The air flow inside the drawer 102 is transported to the heat exchange device of the refrigerator through the return air outlet 203 for heat exchange and thus participates in the cycle.

[0044] Referring to Figure 1 and Figure 4 As shown, it can be understood that the refrigerator further includes a storage container, which is a device for storing various items. Its function is to protect the internal items and at the same time facilitate people to manage and access them. The storage container can be a cylinder with an open mouth, or it can have a closable lid or door to make it closed, so as to ensure that the internal items are not affected by the external environment, such as dust, moisture, etc. The following takes the storage container as the drawer 102 as an example for illustration.

[0045] Referring to Figure 2 and Figure 3 As shown, it can be understood that the drawer 102 is located in the variable temperature compartment 403 and can achieve functions such as zero-degree fresh-keeping and slightly frozen fresh-keeping. Compared with traditional frozen fresh-keeping, the short-term fresh-keeping function does not require thawing, and the user experience is better. The control logic of a general refrigerator executes control steps according to the set temperature. For example, when it is detected that the temperature in the variable temperature compartment 403 is higher than the set temperature, the air duct assembly is opened to allow cold air to enter the variable temperature compartment 403 to cool the variable temperature compartment 403 until the temperature in the variable temperature compartment 403 reaches the set temperature, and then the air duct assembly is closed. And this set temperature is constant, so that the cooling rate of the variable temperature compartment 403 is also basically constant. When the load of the drawer 102 is large, the cooling rate of the variable temperature compartment 403 is slow and cannot reach the set temperature within the expected time, which greatly reduces the fresh-keeping effect and becomes one of the pain points for users.

[0046] Referring to Figure 2 As shown, it can be understood that the cabinet 101 is further provided with a guide rail 205, that is, the support portion is configured as the guide rail 205, and the drawer 102 is installed on the guide rail 205, so that it can move horizontally on the guide rail 205, enabling the drawer 102 to slide out from the inside of the refrigerating compartment 402 or the variable temperature compartment 403, facilitating the user to pick up and place food ingredients, and sliding back into the inside of the refrigerating compartment 402 or the variable temperature compartment 403 after the user finishes picking up and placing food ingredients.

[0047] Referring to Figure 2As shown, it can be understood that a cover plate 206 is provided between the refrigerating compartment 402 and the variable-temperature compartment 403. The cover plate 206 can effectively cover the opening of the drawer 102, prevent dust, dirt, etc. from entering the interior of the drawer 102, and keep the interior of the drawer 102 clean and hygienic. In addition, a heat-insulating layer is provided on the cover plate 206 to reduce the heat exchange between the refrigerating compartment 402 and the variable-temperature compartment 403, so as to better control the temperature of the drawer 102.

[0048] Referring to Figures 2 to 6 As shown, it can be understood that the refrigerator further includes a load identification mechanism 405, an elastic mechanism 301, and a control component 204. The elastic mechanism 301 is disposed between the guide rail 205 of the variable-temperature compartment 403 and the bearing portion 302 of the drawer 102. The bearing portion 302 is disposed on the side of the storage container, and the number of the bearing portions 302 is at least two and corresponds to the positions of the two guide rails 205 respectively. The load identification mechanism 405 is used to determine whether to activate the rapid cooling control and transmit a signal to the control component 204. The elastic mechanism 301 is used to control whether the load identification mechanism 405 is triggered by a signal. Specifically, it controls whether the load identification mechanism 405 is turned on or off according to the load capacity of the drawer 102. For example, when the load capacity of the drawer 102 is small, the elastic mechanism 301 supports the drawer 102 so that a proper distance is maintained between the guide rail 205 and the bearing portion 302 of the drawer 102, and the load identification mechanism 405 does not generate a control signal. When the load capacity of the drawer 102 is large, the drawer 102 is pressed down due to its weight, causing the elastic mechanism 301 to be compressed, and then the distance between the guide rail 205 and the bearing portion 302 of the drawer 102 is shortened, and the load identification mechanism generates a control signal. The control component 204 determines the target temperature control according to the received signal, that is, it can quickly reduce the temperature of the food ingredients and set a proper target temperature control when the food ingredient load in the drawer 102 is large and the temperature of the newly placed food ingredients is low, can meet the food preservation requirements of the drawer 102 under different load conditions, realize the precise temperature control of the drawer 102, and has a good preservation effect.

[0049] It can be understood that the control component 204 has the function of detecting temperature, can sense the space temperature of the drawer 102, and controls the air duct assembly to supply air. The control component 204 usually uses a thermal resistor or a thermocouple as a temperature measurement element, and can convert the temperature signal into an electrical signal for output. The thermal resistor is based on the characteristic that the resistance value changes with temperature, while the thermocouple is based on the thermoelectric effect principle. The control component 204 is disposed in the air duct housing 201 and is located between the air damper and the air outlet 202. When the food ingredient load in the drawer 102 is large and the temperature of the newly placed food ingredients is low, the load identification mechanism 405 transmits a signal to the control component 204, and the control component 204 controls the air damper to open and can also control the rotation speed of the fan, so as to increase the input of cold air and make the temperature in the drawer 102 drop rapidly.

[0050] Referring to Figure 4 and Figure 6 as shown, it can be understood that the load identification mechanism 405 includes a transmitting element 207 and a receiving element 208. The transmitting element 207 is located on one side of the drawer 102, and the receiving element 208 is located on the other side of the drawer 102. The transmitting element 207 emits a signal, and the receiving element 208 receives the transmitted signal of the transmitting element 207 and converts it into an electrical signal by the load identification machine. When an object enters the detection range between the transmitting element 207 and the receiving element 208, the object will reflect at least a part of the transmitted signal, affecting the receiving element 208's reception of the transmitted signal of the transmitting element 207, and the load identification mechanism 405 either does not generate an electrical signal or generates another electrical signal different from the previous one.

[0051] It can be understood that the upper end of the elastic mechanism 301 abuts against the bearing part 302, and the lower end of the elastic mechanism 301 abuts against the guide rail 205. When the drawer 102 is placed on the guide rail 205, the elastic mechanism 301 undergoes a certain amount of deformation due to the weight of the drawer 102 itself and the weight of the items it contains. When the items placed in the drawer 102 are lighter, the deformation of the elastic mechanism 301 is less, and the drawer 102 is within the detection range between the transmitting element 207 and the receiving element 208. At this time, the variable temperature compartment 403 cools the drawer 102 according to the first set temperature. When the items placed in the drawer 102 are heavier, the deformation of the elastic mechanism 301 is more, and the bearing part 302 moves downward a greater distance, causing the drawer 102 to move out of the detection range between the transmitting element 207 and the receiving element 208. At this time, the variable temperature compartment 403 cools the drawer 102 according to the second set temperature, and the second set temperature is lower than the first set temperature.

[0052] It should be noted that during the operation of the refrigerator, the target temperature control temperature of the drawer 102 can change, and the target temperature control temperature of the drawer 102 will affect the cooling capacity of the refrigerator to the drawer 102 through the air duct assembly. The lower the target temperature control temperature of the drawer 102 is set, the greater the cooling capacity to the drawer 102 will be; similarly, the higher the target temperature control temperature of the drawer 102 is set, the smaller the cooling capacity to the drawer 102 will be.

[0053] Generally, when the drawer 102 is disposed in the variable temperature compartment 403, the target temperature control temperature of the drawer 102 can be set to -1°C. When the items placed in the drawer 102 are light (e.g., unloaded / lightly loaded), the air duct assembly is controlled to supply cold air to the drawer 102 at a first set temperature, and the first set temperature can be set to -1°C. At this time, the temperature of the items in the drawer 102 drops slowly, but there are also fewer items that need to be cooled, and they can be cooled to the target temperature control temperature within the expected time, which is relatively energy-saving. When the items placed in the drawer 102 are heavy (e.g., half-loaded / full-loaded), the load recognition mechanism 405 determines that rapid cooling control needs to be enabled, and the control component 204 controls the air duct assembly to supply cold air to the drawer 102 at a second set temperature lower than -1°C. For example, the second set temperature can be set to -5°C. Therefore, the difference between the current temperature of the drawer 102 and the second set temperature will be larger, and the amount of cold air supplied to the drawer 102 will also increase, so that the temperature of the items inside the drawer 102 can drop rapidly. When the surface temperature of the items drops to -1°C, the rapid cooling control can be exited.

[0054] It should be noted that in some other embodiments, the refrigerator can also adopt a direct cooling method to adjust the temperature of the storage compartment by turning on and off the evaporator.

[0055] It can be understood that in the related art, in order to enable the drawer 102 to slide, a guide groove is provided on the top surface of the guide rail 205, and the drawer 102 is provided with rollers, which are placed in the guide groove and slide along the guide rail 205. In this solution, the rollers play a supporting role, and the elastic mechanism 301 in this embodiment also plays a supporting role, enabling the load recognition mechanism 405 to work properly through the change in weight. Therefore, the above solution using rollers conflicts with the solution of this embodiment, and the solution of this embodiment cannot be directly applied to the existing technical solution.

[0056] Refer to Figure 6As shown, it can be understood that the guide rail 205 includes a fixed part 604, a ball and a movable part 605. The fixed part 604 and the movable part 605 can be set as sheet metal parts. The movable part 605 wraps the three circumferential sides of the fixed part 604. The other side of the fixed part 604 is connected and fixed to the side wall of the variable temperature chamber. The fixed part 604 and the movable part 605 are sandwiched with a ball, so that the movable part 605 can slide along the fixed part 604, and the friction is reduced by the ball, so that the sliding is smoother. The drawer 102 is connected to the movable part 605, so that the drawer 102 can slide with the movable part 605, so as to enter the variable temperature chamber, or move to the outside of the variable temperature chamber, which is convenient for users. In addition, the transmitting element 207 is fixed to the movable part 605, so as to keep the relative position of the transmitting element 207 and the drawer 102 unchanged, and then keep the relative position of the transmitting element 207 and the receiving element 208 unchanged, so that the load identification mechanism 405 can work normally.

[0057] Reference Figure 6 As shown, it can be understood that the movable member 605 is provided with a connecting boss 606, and the bearing portion 302 is provided with a connecting hole 601 that matches the connecting boss 606. When the drawer 102 is placed on the movable member 605 from top to bottom, the connecting hole 601 of the bearing portion 302 is inserted into the connecting boss 606 of the movable member 605, so that the push-in or pull-out action of the drawer 102 can make the movable member 605 move with the drawer 102. The drawer 102 moves upward until the connecting hole 601 of the bearing portion 302 is separated from the connecting boss 606 of the movable member 605, so that the drawer 102 can be taken out separately, which is convenient for cleaning and maintenance.

[0058] It is understood that in some embodiments, the transmitting element 207 is an infrared transmitting sensor, and the receiving element 208 is an infrared receiving sensor, that is, the load identification mechanism 405 is an infrared sensor. The infrared transmitting sensor emits infrared rays of a certain frequency, and the infrared receiving sensor receives these infrared rays and converts them into electrical signals. When an object enters the detection range of the sensor, it reflects a part of the infrared rays, and these reflected infrared rays are received by the infrared receiving sensor and converted into electrical signals. By measuring the intensity of the electrical signal received by the infrared receiving sensor, the position and distance of the object can be determined. Therefore, when the drawer 102 is empty / less loaded, the position of the drawer 102 is higher, the drawer 102 blocks the infrared rays emitted by the infrared transmitting sensor, and the infrared receiving sensor does not receive the infrared rays or only receives a small amount of infrared rays. When the drawer 102 is half loaded / full loaded, the position of the drawer 102 is lower, the drawer 102 avoids the infrared rays emitted by the infrared transmitting sensor, and the infrared receiving sensor can receive the infrared rays more completely and convert them into electrical signals.

[0059] The working principle of the infrared sensor is based on the reflection and absorption of infrared rays by objects. Different objects have different degrees of reflection and absorption of infrared rays. Therefore, the infrared sensor can distinguish different objects by measuring the intensity of the received electrical signal. For example, black objects absorb more infrared rays, so they reflect less infrared rays, while white objects reflect more infrared rays. Therefore, an infrared absorption area can be set on the drawer 102, and a black coating is sprayed on the absorption area, which can absorb more infrared rays and make the recognition accuracy of the load recognition mechanism 405 higher.

[0060] It should be noted that the load recognition mechanism 405 can also be an optoelectronic sensor. The working principle of the optoelectronic sensor is the photoelectric effect. Specifically, when the optoelectronic element in the optoelectronic sensor is irradiated by light, it absorbs photons and generates electron-hole pairs. These electron-hole pairs move directionally under the action of an external electric field to form a current, and this current is the output signal of the optoelectronic sensor.

[0061] According to the working principle of the optoelectronic element, the optoelectronic sensor can be divided into two types: the external photoelectric effect type and the internal photoelectric effect type. Among them, the external photoelectric effect type means that when the optoelectronic element is irradiated by light, electron-hole pairs are generated, and these electron-hole pairs escape from the bondage of atoms to form a photocurrent. The internal photoelectric effect type is that when the optoelectronic element is irradiated by light, electron-hole pairs are generated, and these electron-hole pairs do not escape but are absorbed inside the element, thereby causing a change in the resistance value of the element.

[0062] Generally, an optoelectronic sensor is composed of three parts: an optoelectronic transmitter, an optoelectronic receiver, and a detection circuit. The transmitter is generally a semiconductor light source that can emit light of a certain wavelength; the receiver is generally a photosensitive semiconductor device that can receive light and generate a current; the detection circuit converts the generated current into an electrical signal for output. That is, the emitting element 207 is the optoelectronic transmitter, and the receiving element 208 is the optoelectronic receiver.

[0063] Refer to Figure 4 and Figure 6 As shown, it can be understood that a notch 406 is provided on the side wall of the storage container, and the infrared rays emitted by the infrared emission sensor or the light emitted by the optoelectronic transmitter can pass through the notch 406, thereby reducing the installation positions of the emitting element 207 and the receiving element 208, facilitating installation, and also increasing the applicable scenarios of the emitting element 207 and the receiving element 208.

[0064] Refer to Figure 5 and Figure 6As shown, it can be understood that the elastic mechanism 301 includes an elastic member 501 and a movable cover 502. The bearing portion 302 is provided with an installation groove 602. The elastic member 501 is installed in the installation groove 602. One end of the elastic member 501 remains relatively stationary with respect to the bearing portion 302, and the other end of the elastic member 501 is connected to the movable cover 502. The movable cover 502 can extend out of the installation groove 602 or retract into the installation groove 602. The movable cover 502 abuts against the guide rail 205, thereby realizing the supporting function. The interior of the movable cover 502 is a hollow structure, forming a cavity. The upper end of the movable cover 502 is an open end, and the open end communicates with the cavity. The lower end of the movable cover 502 is a closed end, and the closed end closes the upper end of the cavity. Specifically, the movable cover 502 includes a cylindrical portion 503 and a planar portion 504. The cross-section of the cylindrical portion 503 is annular, and the planar portion 504 is connected to the lower end of the cylindrical portion 503. The movable cover 502 can increase the contact area with the guide rail 205, thereby keeping the drawer 102 stable. Moreover, during the movement of the drawer 102, the frictional force between the movable cover 502 and the guide rail 205 is smaller than the frictional force between the elastic member 501 and the guide rail 205, so that the resistance received during the movement of the drawer 102 can be reduced, improving the user experience. The position of the installation groove 602 plays a positioning role to ensure the positions of the movable cover 502 and the elastic member 501. The side wall of the installation groove 602 protects the elastic member 501, reducing the action of inclined or lateral forces on the elastic member 501 and maintaining the correct direction of the elastic member 501. For some occasions where it is necessary to prevent the elastic member 501 from loosening, a locking mechanism such as a bolt or a clamping groove can be added to the end of the elastic member 501 to fix the position of the elastic member 501.

[0065] It can be understood that the elastic member 501 is configured as a spring. The elastic member 501 can also be structures such as an elastic washer or elastic clay.

[0066] Referring to Figure 5 and Figure 6As shown, it can be understood that the elastic mechanism 301 also includes a fixed seat 505, the fixed seat 505 is installed in the installation groove 602, one end of the elastic member 501 is fixed to the fixed seat 505, a guide hole 506 is formed inside the fixed seat 505, the opening of the guide hole 506 faces the guide rail 205, the cross section of the fixed seat 505 is annular, at least part of the movable cover 502 is located in the guide hole 506, and the guide hole 506 guides the movable cover 502 to move in the up and down direction. The fixed seat 505, the elastic member 501 and the movable cover 502 of the elastic mechanism 301 can be used as a whole, which is convenient for installation and removal and replacement. The guide hole 506 can guide the movement direction of the movable cover 502, ensure that the movable cover 502 moves on the correct track, and avoid deviation or shaking. The guide hole 506 can absorb the vibration and impact generated during the movement of the movable cover 502, and improve the stability and accuracy of the movement. The guide hole 506 can be used as a channel for lubricating oil or grease to provide lubrication for the movable cover 502 and reduce friction and wear.

[0067] Reference Figure 5 As shown, it can be understood that the side wall of the fixed seat 505 is provided with a limiting hole 507, and the limiting hole 507 can be a waist-shaped hole, and the length direction of the waist-shaped hole coincides with the up-down direction. The movable cover 502 is provided with a limiting protrusion 508, and the limiting protrusion 508 is located on the side of the movable cover 502, and the limiting protrusion 508 extends into the limiting hole 507. When the limiting protrusion 508 moves to the upper end of the limiting hole 507, the movable cover 502 cannot continue to move upward, and the elastic member 501 is prevented from being over-compressed and failing. When the limiting protrusion 508 moves to the lower end of the limiting hole 507, the movable cover 502 cannot continue to move downward, and the movable cover 502 is prevented from detaching from the fixed seat 505. In other words, the limiting protrusion 508 cooperates with the limiting hole 507 to complete the upper and lower direction limitation of the movable cover 502.

[0068] It is understandable that when the items placed in the drawer 102 are light, the elastic member 501 is less deformed, the drawer 102 is kept at a higher position under the elastic force of the elastic member 501, and the limiting protrusion 508 is close to the lower end of the limiting hole 507. When the items placed in the drawer 102 are heavy, the elastic member 501 is more deformed, that is, the elastic member 501 is compressed more, which causes the movable cover 502 and the fixed seat 505 to overcome the elastic force of the elastic member 501 and move closer to each other, and the limiting protrusion 508 is close to the upper end of the limiting hole 507.

[0069] It can be understood that an inclined surface is provided on the upper part of the limit projection 508. In the direction from top to bottom, the inclined surface is inclined towards the limit hole 507, that is, the upper end of the inclined surface is located within the guide hole 506 or slightly enters the limit hole 507, and the lower end of the inclined surface extends beyond the guide hole 506 and enters the limit hole 507. When installing the movable cover 502, the upper end of the movable cover 502 is inserted into the guide hole 506. The width of the upper end of the movable cover 502 is smaller than the diameter of the guide hole 506, so it can be easily installed. Subsequently, the contact point between the limit projection 508 and the fixed seat 505 descends along the inclined surface. The diameter of the limit projection 508 of the movable cover 502 is larger than that of the guide hole 506, and the movable cover 502 gradually contracts and deforms inward. And when the limit projection 508 enters the limit hole 507, the movable cover 502 expands outward and returns to its original state. A stepped structure is formed between the lower part of the limit projection 508 and the lower end of the movable cover 502, which can prevent the limit projection 508 from automatically disengaging from the limit hole 507.

[0070] Referring to Figure 6 As shown, it can be understood that an opening 603 is provided on the side wall of the installation groove 602. The opening 603 communicates with the installation groove 602. The opening 603 is located on the installation groove 602 along the direction perpendicular to the moving direction of the movable cover 502. The opening 603 penetrates the side wall of the installation groove 602, so that the fixed seat 505 can be installed into the installation groove 602 from the opening 603, which is convenient for the operator to operate.

[0071] Referring to Figure 5 and Figure 6 As shown, it can be understood that a limiting portion 509 is provided on the outer side wall of the fixed seat 505. The limiting portion 509 enlarges the radial dimension of the fixed seat 505. The opening 603 can accommodate the limiting portion 509, so that the fixed seat 505 together with the limiting portion 509 can be installed into the bearing portion 302 from the opening 603. After installation, the limiting portion 509 is located within the opening 603, and the opening 603 restricts the movement of the limiting portion 509 in the up and down direction, thereby restricting the fixed seat 505 from disengaging from the installation groove 602 along the moving direction of the movable cover 502, so that the fixed seat 505 and the bearing portion 302 remain relatively fixed, and the connection is more reliable. Since the elastic mechanism 301 is stressed in the moving direction of the movable cover 502 and is prone to moving positions, by providing the cooperation of the limiting portion 509 and the opening 603, the position of the fixed seat 505 can be well fixed, preventing the fixed seat 505 from shifting, and further ensuring that the compression amount of the elastic member 501 matches the recognition accuracy of the load recognition mechanism 405.

[0072] It should be noted that in some other embodiments, the storage container can also be of other types of structures, such as a storage box. The guide rail 205 can also be replaced by support parts such as support bosses. Support parts are provided on both opposite side walls of the storage compartment. The two sides of the storage container are supported by the support parts. The storage container is directly placed downward on the support parts, or the storage container is directly picked up upward and then taken out of the storage compartment through the opening of the storage compartment.

[0073] It can be understood that the load identification mechanism 405 of the embodiment of the present invention, compared with the solution of using a weight sensor to detect the load of the storage container, has only two states in the detection result of the load identification mechanism 405, and can quickly judge the load state of the storage container, that is, judge whether the storage container is in an empty / under-loaded state or in a half-loaded / full-loaded state, so that the control component 204 can adjust the temperature according to the load state of the storage container. However, the detection result of the weight sensor continuously returns different weight values to the control component 204, and multiple different determination programs may need to be set, and the overall solution is more complex, increasing the maintenance cost.

[0074] The embodiments of the present invention have been described in detail above with reference to the drawings. However, the present invention is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present invention within the scope of knowledge possessed by those of ordinary skill in the art.

Claims

1. Refrigerator, It is characterized in that include: The box body is provided with a storage compartment, and two oppositely disposed side walls of the storage compartment are provided with support parts; A storage container is arranged in the storage compartment, a side of the storage container is provided with a bearing portion, and the bearing portion abuts against the support portion; A load identification mechanism is disposed on a side wall of the storage compartment, the load identification mechanism comprises a transmitting element and a receiving element, the transmitting element and the receiving element are respectively located on two opposite sides of the storage container; An elastic mechanism, disposed between the supporting portion and the bearing portion; A control component for controlling the temperature of the storage compartment; The refrigerator has a first state and a second state. In the first state, the storage container blocks the transmission signal between the transmitting element and the receiving element. In the second state, the elastic mechanism is deformed due to the increased load-bearing capacity of the storage container, thereby causing the storage container to descend. The receiving element receives the transmission signal of the transmitting element and generates an electrical signal, which is transmitted to the control component to lower the temperature.

2. The refrigerator according to claim 1, It is characterized in that The transmitting element is an infrared transmitting sensor, and the receiving element is an infrared receiving sensor.

3. The refrigerator according to claim 1 or 2, It is characterized in that The side wall of the storage container is provided with a notch for the transmission signal to pass through.

4. The refrigerator according to claim 1, It is characterized in that The support part is constructed as a guide rail, which includes a fixed part, a ball bearing and a movable part. The fixed part is fixed to the side wall of the storage compartment, the movable part is movably connected to the fixed part through a ball bearing, the storage container is connected to the movable part, and the transmitting element is fixed to the movable part.

5. The refrigerator according to claim 4, It is characterized in that The movable part is provided with a connecting boss, and the bearing part is provided with a connecting hole matched with the connecting boss.

6. The refrigerator according to claim 1, It is characterized in that The refrigerator further comprises an air duct assembly arranged at the rear of the storage container, wherein the air duct assembly is provided with an air outlet and an air return outlet communicated with the storage container.

7. The refrigerator according to claim 6, It is characterized in that The control component is arranged on the air duct assembly, and the control component can sense the spatial temperature of the storage container and control the air duct assembly to supply air.

8. The refrigerator according to claim 1, It is characterized in that The elastic mechanism comprises an elastic member and a movable cover, the bearing portion is provided with a mounting groove, the movable cover is connected to the elastic member and mounted in the mounting groove, and the movable cover abuts against the supporting portion.

9. The refrigerator according to claim 8, It is characterized in that The elastic mechanism further comprises a fixing seat, the fixing seat is installed in the installation groove, the fixing seat is provided with a guide hole, and at least a part of the movable cover is located in the guide hole.

10. The refrigerator according to claim 9, It is characterized in that The side wall of the fixing seat is provided with a limiting hole, and the movable cover is provided with a limiting protrusion located in the limiting hole.

11. The refrigerator according to claim 9 or 10, It is characterized in that Along a direction perpendicular to the moving direction of the movable cover, a side wall of the mounting groove is provided with an opening communicating with the mounting groove, and the opening is configured so that the fixing seat can be installed into the mounting groove through the opening.

12. The refrigerator according to claim 11, It is characterized in that The outer side wall of the fixing seat is provided with a limiting portion, and the limiting portion is located in the opening to limit the fixing seat from being separated from the mounting groove along the moving direction of the movable cover.

Images