Refrigerator

Abstract

The refrigerator comprises a refrigerator body, a refrigerator door, a top door assembly and an air pressure sensing assembly, and the refrigerator body is provided with a containing chamber; the refrigerator door is movably connected to the refrigerator body and used for opening / closing the containing chamber. The top door assembly is installed in the refrigerator body and comprises a push rod, and the top door assembly can push a refrigerator door outwards through the push rod. The air pressure sensing assembly is installed on the box body and communicates with the containing chamber, the air pressure sensing assembly comprises an elastic piece and a detection sensor, the detection sensor can detect elastic deformation of the elastic piece and generate a feedback signal, and the feedback signal is used for controlling the top door assembly to be started; and when the refrigerator door for closing the accommodating chamber is opened from the refrigerator body, the air pressure value of the air in the accommodating chamber is gradually reduced, so that the elastic sheet is elastically deformed. In the process, the user does not need to deliberately operate, and the effect that the user can conveniently open the refrigerator door is achieved; in addition, the external attractiveness of the refrigerator door is also ensured.

Description

Technical Field

[0001] This utility model belongs to the technical field of refrigerator door opening, and in particular relates to a refrigerator. Background Technology

[0002] After a refrigerator cools down, the internal temperature of the refrigerator body decreases. Assuming the space remains constant, according to the ideal gas law PV = nRT (P: pressure; V: volume; n: amount of substance; T: temperature), the decrease in internal air temperature causes a decrease in internal air pressure, making it lower than the external atmospheric pressure. Furthermore, when the refrigerator door is opened, the presence of the door seal (which has a certain amount of elastic deformation) prevents the initial small displacement of the door from breaking the seal of the internal space. At this point, the internal temperature remains constant, but the volume increases. The formula is: ΔV = Sd (S is the inner surface area of ​​the door assembly, and d is the displacement of the door seal to maintain the seal). This further reduces the internal air pressure, and the larger the refrigerator door is opened, the more significant the pressure reduction. Therefore, for refrigerators with low cooling temperatures (especially in the freezer compartment) and large doors, the opening force is usually very large, making it inconvenient for users. This is particularly difficult for the elderly, children, and women.

[0003] Currently, most refrigerators incorporate a mechanical door-opening assist mechanism on the external door handle to aid in opening the door. Specifically, when the refrigerator door is pulled, a gap is created between the door seal and the refrigerator body, reducing the pressure difference between the inside and outside of the refrigerator and lowering the opening force. However, integrating this assist mechanism into the external handle limits its practicality and affects the door's appearance. Furthermore, users need to actively engage this mechanism while opening the door, which can negatively impact the user experience. Utility Model Content

[0004] In view of this, it is necessary to provide a refrigerator for solving the above-mentioned technical problems.

[0005] A refrigerator, comprising:

[0006] The enclosure has a storage compartment;

[0007] The refrigerator door is movably connected to the cabinet body and is used to open / close the storage compartment;

[0008] A top door assembly is installed inside the cabinet. The top door assembly includes a push rod, and the top door assembly can push the refrigerator door outward through the push rod.

[0009] A gas pressure sensing assembly is mounted on the cabinet and communicates with the accommodating chamber, and includes an elastic sheet and a detection sensor capable of detecting elastic deformation of the elastic sheet and generating a feedback signal for controlling the top door assembly to be started;

[0010] When the refrigerator door of the accommodating chamber is opened from the cabinet, the gas pressure value of the gas in the accommodating chamber gradually decreases, so that the elastic sheet is elastically deformed.

[0011] It can be understood that the outward pushing of the refrigerator door by the pushing rod in the top door assembly is controlled by the change of the gas pressure of the gas in the accommodating chamber of the cabinet during the opening of the refrigerator door, which can play a door opening assisting role. In this process, the user does not need to operate deliberately, which facilitates the user to open the refrigerator door. In addition, since the top door assembly and the gas pressure sensing assembly are mounted on the cabinet, the setting of the top door assembly and the gas pressure sensing assembly will not affect the appearance of the refrigerator door, and the external appearance of the refrigerator door is ensured.

[0012] In one embodiment, the detection sensor is configured as a capacitive sensor.

[0013] It can be understood that the capacitive sensor is used to detect the distance change caused by the deformation of the elastic sheet, which can improve the detection sensitivity of the detection sensor when detecting the deformation of the elastic sheet.

[0014] In one embodiment, the gas pressure sensing assembly further includes a fixed base and a gland, the fixed base has a retaining table formed therein, the elastic sheet is attached to the retaining table and is pressed and positioned by the gland;

[0015] The first chamber is in communication with the accommodating chamber.

[0016] It can be understood that the above-mentioned fixed base and the gland are used to realize the assembly connection of the elastic sheet in the gas pressure sensing assembly, and ensure that the change of the gas pressure value of the gas in the accommodating chamber can directly act on the elastic sheet.

[0017] In one embodiment, the gland is inserted and matched with the fixed base, and the gland is connected with the fixed base in a tight fit manner.

[0018] The gland has a through hole, and the first chamber can communicate with the accommodating chamber through the through hole.

[0019] It can be understood that the above-mentioned assembly mode of the gland in the fixed base facilitates the assembly of the gland in the fixed base, and ensures the communication between the first chamber and the accommodating chamber.

[0020] In one embodiment, a second chamber is formed between the side of the elastic sheet away from the gland and the fixed base, and the second chamber is independently arranged relative to the first chamber.

[0021] The second chamber is in communication with external air.

[0022] It can be understood that, since the second chamber is in communication with external air, the elastic sheet can be elastically deformed by the pressure difference between the gas in the second chamber and the external atmosphere, which ensures that the pressure difference caused by the change in the gas pressure in the accommodation chamber can achieve the elastic deformation of the elastic sheet.

[0023] In one embodiment, the gas pressure sensing assembly further comprises a communication pipe, the communication pipe is arranged through the box, and the second chamber is in communication with the external air through the communication pipe.

[0024] In one embodiment, the fixed base is arranged in the accommodation chamber, and the fixed base is connected to the box in a threaded manner.

[0025] It can be understood that the fixed base is assembled to the box in a threaded manner, which facilitates the assembly of the fixed base on the box.

[0026] In one embodiment, the thickness of the elastic sheet is set as D, wherein 0.3mm≥D>0.

[0027] In one embodiment, the push rod is configured as a magnetic member.

[0028] The top door assembly further comprises an electromagnetic coil, the electromagnetic coil is sleeved on the push rod, and the feedback signal can control the electromagnetic coil to be energized.

[0029] In one embodiment, the top door assembly further comprises a shell and an elastic member, the push rod, the electromagnetic coil and the elastic member are all installed in the shell.

[0030] The elastic member is sleeved on the push rod and abuts against the push rod and the shell respectively, and is used to drive the push rod to reset.

[0031] Due to the application of the above technical solution, the present application has the following advantages compared with the prior art:

[0032] The refrigerator claimed in the application utilizes the pressure change of the gas in the accommodating chamber of the refrigerator body during the opening of the refrigerator door to control the outward pushing of the refrigerator door by the pushing rod in the top door assembly, so as to play the role of door opening assistance, and in this process, the user does not need to deliberately operate, thereby playing the role of facilitating the user to open the refrigerator door; in addition, since the top door assembly and the gas pressure sensing assembly are both installed on the refrigerator body, the setting of the top door assembly and the gas pressure sensing assembly will not affect the appearance of the refrigerator door, and the external appearance of the refrigerator door is ensured. BRIEF DESCRIPTION OF DRAWINGS

[0033] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed to be used in the embodiments or the prior art description will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0034] Figure 1 The structure schematic diagram of the refrigerator provided in the present application.

[0035] Figure 2 The partial structure schematic diagram of the refrigerator provided in the present application.

[0036] Figure 3 The structure schematic diagram of the top door assembly in the present application.

[0037] Figure 4 The structure schematic diagram of the gas pressure sensing assembly in the present application.

[0038] Figure 5 The partial sectional view of the gas pressure sensing assembly in the present application.

[0039] Reference signs: 100, refrigerator; 10, refrigerator body; 11, accommodating chamber; 20, refrigerator door; 30, top door assembly; 31, pushing rod; 32, electromagnetic coil; 33, shell; 34, elastic piece; 40, gas pressure sensing assembly; 41, elastic sheet; 42, detection sensor; 43, fixed base; 431, blocking table; 44, gland; 441, through hole; 45, communication pipe; 401, first chamber; 402, second chamber. DETAILED DESCRIPTION

[0040] The technical solutions in the embodiments of the present application will be described clearly and completely below in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments are only some embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all the other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0041] It should be noted that when a component is said to be "located on" another component, it can be directly located on the other component or may have an intervening component. When a component is considered to be "located on" another component, it can be directly located on the other component or may have an intervening component. When a component is considered to be "fixed to" another component, it can be directly fixed to the other component or may have an intervening component.

[0042] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0043] like Figures 1 to 3 , Figure 5 As shown, a refrigerator 100 provided in one embodiment of this application includes a cabinet 10, a refrigerator door 20, a top door assembly 30, and a pressure sensing assembly 40. The cabinet 10 has a receiving chamber 11. The refrigerator door 20 is movably connected to the cabinet 10 and is used to open / close the receiving chamber 11. The top door assembly 30 is installed inside the cabinet 10 and includes a push rod 31, which can push the refrigerator door 20 outward. The pressure sensing assembly 40 is installed on the cabinet 10 and communicates with the receiving chamber 11. The pressure sensing assembly 40 includes an elastic sheet 41 and a detection sensor 42. The detection sensor 42 can detect the elastic deformation of the elastic sheet 41 and generate a feedback signal, which is used to control the top door assembly 30 to start. When the refrigerator door 20, which closes the receiving chamber 11, is opened from the cabinet 10, the gas pressure in the receiving chamber 11 gradually decreases, causing the elastic sheet 41 to undergo elastic deformation. Here, the cabinet 10 is specifically a freezer cabinet. It should be noted that the activation of the top door assembly 30 mentioned above specifically refers to the operation of the top door assembly 30 and the push rod 31 pushing the refrigerator door 20 outward.

[0044] As can be seen from the above, when the refrigerator door 20 of this application is opened, the pressure change of the gas in the accommodating chamber 11 of the cabinet 10 during the opening process of the refrigerator door 20 is used to control the push rod 31 in the top door assembly 30 to push the refrigerator door 20 outward, thereby providing an opening assistance function. During this process, no deliberate operation by the user is required, which makes it easier for the user to open the refrigerator door 20. In addition, since the top door assembly 30 and the pressure sensing assembly 40 are both installed on the cabinet 10, the installation of the top door assembly 30 and the pressure sensing assembly 40 will not affect the appearance of the refrigerator door 20, and ensure the aesthetic appearance of the refrigerator door 20.

[0045] It should be noted that, due to the existence of the door seal (not shown in the figure) on the refrigerator door 20, the door seal will be deformed under the driving of the refrigerator door 20 during the process of the refrigerator door 20 being pulled up and opened, and the volume of the internal space enclosed between the cabinet 10 and the refrigerator door 20 will increase, which will reduce the gas pressure value of the gas in the accommodating chamber 11 of the cabinet 10 by using the ideal gas state equation PV = nRT, and the elastic deformation of the elastic sheet 41 can be realized by using the pressure difference; the elastic sheet 41 can trigger the detection sensor 42 after the deformation amount of the elastic deformation accumulates to a certain extent.

[0046] As shown in Figure 3 , in an embodiment, the push rod 31 is configured as a magnetic piece; the top door assembly 30 further includes an electromagnetic coil 32, the electromagnetic coil 32 is sleeved on the push rod 31, and the feedback signal can control the electromagnetic coil 32 to be powered on. When the top door assembly 30 works, the magnetic field generated by the electromagnetic coil 32 when powered on can drive the movement of the push rod 31 outwardly extending out of the cabinet 10, and the purpose of pushing the refrigerator door 20 is achieved. That is, the top door assembly 30 as a whole can be configured as an electromagnet structure, so that the overall assembly of the top door assembly 30 requires a smaller installation space by using the structural characteristics of the electromagnet, so as to facilitate the assembly on the cabinet 10. Here, the push rod 31 is specifically a magnet. It can be understood that, in other embodiments, the push rod 31 can also be a telescopic rod of an electric push rod, and the telescopic movement of the push rod 31 is directly controlled by the electric push rod.

[0047] As shown in Figure 3 , in an embodiment, the top door assembly 30 further includes a shell 33 and an elastic piece 34, the push rod 31, the electromagnetic coil 32 and the elastic piece 34 are all installed in the shell 33; the elastic piece 34 is sleeved on the push rod 31 and abuts against the push rod 31 and the shell 33 respectively, and is used for driving the push rod 31 to reset. That is, the top door assembly 30 can be assembled based on the shell 33, and the integration of the structure of the top door assembly 30 is realized, so as to facilitate the assembly of the top door assembly 30 on the cabinet 10. Here, the shell 33 can be assembled by two separate shells, and the elastic piece 34 is configured as a spring. It can be understood that, in other embodiments, the elastic piece 34 can also be a rubber sleeve or other accessories with high elasticity, which will not be described here.

[0048] As shown in Figure 4 , Figure 5As shown, in one embodiment, the thickness of the elastic sheet 41 is set to D, where 0.3mm ≥ D > 0. Specifically, the thickness of the elastic sheet 41 is set to 0.3mm, 0.2mm, 0.1mm, etc. This allows the thin elastic sheet 41 to easily undergo elastic deformation under pressure, thus ensuring that the elastic sheet 41 can undergo elastic deformation under pressure differential. Here, the elastic sheet 41 is configured as a stainless steel plate, a rigid film, etc., which will not be elaborated further.

[0049] like Figure 4 , Figure 5 As shown, in one embodiment, the detection sensor 42 is configured as a capacitive sensor. The capacitive sensor is used to detect the distance change caused by the deformation of the elastic sheet 41, thus improving the detection sensitivity of the detection sensor 42 when detecting the deformation of the elastic sheet 41. It is understood that in other embodiments, the detection sensor 42 may also be configured as a laser detection sensor, which will not be elaborated upon here.

[0050] like Figure 4 , Figure 5 As shown, in one embodiment, the air pressure sensing component 40 further includes a fixed base 43 and a pressure cover 44. A baffle 431 is formed in the fixed base 43. The elastic sheet 41 is attached to the baffle 431 and is pressed and limited by the pressure cover 44. This enables the assembly and connection of the elastic sheet 41 in the air pressure sensing component 40 and meets the usage requirement that the elastic sheet 41 can undergo elastic deformation under pressure difference.

[0051] like Figure 2 As shown, in one embodiment, the fixing base 43 is disposed within the receiving chamber 11, and the fixing base 43 is connected to the housing 10 by threads. Specifically, screws, bolts, or other connecting parts can be used to pass through the fixing base 43 and connect it to the housing 10 via threads, thereby fixing the fixing base 43 to the housing 10. This facilitates the assembly of the fixing base 43 onto the housing 10. It is understood that in other embodiments, the fixing base 43 can also be fixed to the housing 10 by welding or bonding.

[0052] like Figure 4 , Figure 5 As shown, a first chamber 401 is formed between the pressure cap 44 and the elastic sheet 41. The first chamber 401 communicates with the receiving chamber 11, allowing the gas in the first chamber 401 to communicate with the gas in the receiving chamber 11. This allows the gas pressure in the first chamber 401 to decrease as the gas pressure in the receiving chamber 11 decreases, causing the elastic sheet 41 to bulge towards the pressure cap 44 and undergo elastic deformation. Here, the pressure cap 44 has a through hole 441, through which the first chamber 401 communicates with the receiving chamber 11.

[0053] As shown in Figure 4 , Figure 5 In an embodiment, the cover 44 is able to be inserted into the fixed base 43, and the cover 44 is connected with the fixed base 43 in a tight fit manner, and the assembly connection of the cover 44 on the fixed base 43 is realized, so as to facilitate the assembly of the cover 44 into the fixed base 43.

[0054] As shown in Figure 4 , Figure 5 In an embodiment, a second cavity 402 is formed between the side of the elastic sheet 41 away from the cover 44 and the fixed base 43, and the second cavity 402 is independently arranged relative to the first cavity 401; and the second cavity 402 is in communication with the external air. The elastic sheet 41 is able to be elastically deformed by the pressure difference between the gas in the second cavity 402 and the external atmospheric pressure, so as to ensure that the pressure difference of the gas in the containing chamber 11 after the change of the gas pressure value can realize the elastic deformation of the elastic sheet 41. Here, the air pressure sensing assembly 40 further comprises a communication pipe 45, the communication pipe 45 is arranged through the box body 10, and the second cavity 402 is able to be in communication with the external air through the communication pipe 45.

[0055] In summary, the refrigerator 100 can use the air pressure change generated in the opening process of the refrigerator door 20 to automatically control the assisted opening of the top door assembly 30, so as to facilitate the user's opening operation of the refrigerator door 20 and play a labor-saving role, and on the other hand, it does not involve the structural improvement of the refrigerator door 20, and ensures the overall external appearance of the refrigerator 100.

[0056] The technical features of the above embodiments can be combined in any way. In order to make the description concise, not all possible combinations of the technical features in the above embodiments are described, but as long as the combinations of the technical features do not exist contradictory, they should be considered as the scope of the present disclosure.

[0057] Those skilled in the art should recognize that the above embodiments are only used to illustrate the present application, and are not used as a limitation of the present application, and as long as the above embodiments are within the spirit and scope of the present application, any appropriate changes and variations are within the scope of the present application.

Claims

1. A refrigerator characterized by comprising: The refrigerator (100) comprises: a cabinet (10) having a containing chamber (11); a refrigerator door (20) movably connected to the cabinet (10) for opening / closing the containing chamber (11); a top door assembly (30) installed in the cabinet (10), the top door assembly (30) comprising a push rod (31), and the top door assembly (30) being capable of pushing the refrigerator door (20) outward by the push rod (31); an air pressure sensing assembly (40) installed on the cabinet (10) and communicating with the containing chamber (11), the air pressure sensing assembly (40) comprising an elastic sheet (41) and a detection sensor (42), the detection sensor (42) being capable of detecting elastic deformation of the elastic sheet (41) and generating a feedback signal, the feedback signal being used for controlling the top door assembly (30) to start; when the refrigerator door (20) opening the containing chamber (11) is opened from the cabinet (10), the air pressure value of the gas in the containing chamber (11) gradually decreases, so that the elastic sheet (41) is elastically deformed.

2. The refrigerator according to claim 1, characterized in that, The detection sensor (42) is configured as a capacitive sensor.

3. The refrigerator according to claim 1, characterized in that, The air pressure sensing assembly (40) further comprises a fixed base (43) and a gland (44), the fixed base (43) is formed with a retaining table (431) in the inside, the elastic sheet (41) is attached to the retaining table (431) and is pressed and limited by the gland (44); wherein a first cavity (401) is formed between the gland (44) and the elastic sheet (41), and the first cavity (401) communicates with the containing chamber (11).

4. The refrigerator according to claim 3, characterized in that, The gland (44) is inserted and matched with the fixed base (43), and the gland (44) is connected with the fixed base (43) in a tight fitting manner; wherein a through hole (441) is formed on the gland (44), and the first cavity (401) communicates with the containing chamber (11) through the through hole (441).

5. The refrigerator according to claim 3, characterized in that, A second cavity (402) is formed between the side of the elastic sheet (41) away from the gland (44) and the fixed base (43), and the second cavity (402) is independently arranged relative to the first cavity (401); wherein the second cavity (402) communicates with external air.

6. The refrigerator according to claim 5, characterized in that, The air pressure sensing assembly (40) further comprises a communication pipe (45), the communication pipe (45) is arranged through the cabinet (10), and the second cavity (402) communicates with the external air through the communication pipe (45).

7. The refrigerator according to claim 3, characterized in that, The fixed base (43) is arranged in the containing chamber (11), and the fixed base (43) is connected with the cabinet (10) in a threaded manner.

8. The refrigerator according to claim 1, characterized in that, The thickness of the elastic sheet (41) is set as D, wherein 0.3mm≥D>0.

9. The refrigerator according to claim 1, characterized in that, The push rod (31) is configured as a magnetic part. The top door assembly (30) further comprises an electromagnetic coil (32) sleeved on the push rod (31), and the feedback signal can control the electromagnetic coil (32) to be powered on.

10. The refrigerator according to claim 9, characterized in that, The top door assembly (30) further comprises a shell (33) and an elastic member (34), and the push rod (31), the electromagnetic coil (32) and the elastic member (34) are all installed in the shell (33). The elastic member (34) is sleeved on the push rod (31) and abuts against the push rod (31) and the shell (33) respectively, and is used for driving the push rod (31) to reset.

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