Sealing structure for preventing water vapor from infiltrating into cooking utensil and electric pressure cooker

Abstract

The utility model relates to the technical field of cooking utensils, and discloses a sealing structure of a cooking utensil for preventing water vapor from infiltrating inwards and an electric pressure cooker, the sealing structure of the cooking utensil for preventing water vapor from infiltrating inwards comprises a pot cover assembly and an inner pot, and further comprises an exhaust pipe, a heavy hammer and a liftable heavy hammer ejector rod, and the heavy hammer is placed at the upper end of the exhaust pipe; the heavy hammer blocks an upper end opening of the exhaust pipe under the action of self gravity, a lower end opening of the exhaust pipe is communicated with an inner cavity of the inner pot, the heavy hammer ejector rod is used for ejecting the heavy hammer upwards so as to open the upper end opening of the exhaust pipe for exhausting, and a driving mechanism used for driving the heavy hammer ejector rod to ascend and descend is arranged on the pot cover assembly. The pot cover assembly is provided with an installation hole used for installing the heavy hammer ejector rod in a sliding mode. According to the pot cover assembly, condensate water and steam outside the pot cover assembly are not prone to permeating into the pot cover assembly, electronic components such as a PCB inside the pot cover assembly are prevented from being damaged when encountering water, internal metal pieces are not prone to rusting, use is reliable, and the service life is long.

Description

Technical Field

[0001] The utility model relates to the technical field of cooking appliances, and more specifically, to a sealing structure for preventing water vapor from infiltrating into a cooking appliance and an electric pressure cooker. Background Art

[0002] An electric pressure cooker is a commonly used cooking appliance in the kitchen. It has high cooking efficiency, simple operation, and can meet various needs. On a relatively traditional electric pressure cooker, there are an exhaust button and an opening button. After cooking is completed, the exhaust button needs to be pressed first to release the high-pressure steam in the electric pressure cooker. After the high-pressure steam is released, the opening button is pressed to open the cooking lid.

[0003] Some existing electric pressure cookers have the following problems: 1. When the pressure in the inner pot of the pressure cooker exceeds the rated pressure, the weight will swing and exhaust to maintain the rated pressure in the inner pot. When the weight swings, steam and condensate will drip from it. 2. When the internal pressure is released after cooking, there will be a large amount of steam and condensate at the exhaust port of the lid assembly; when the above two or other exhaust or air leakage phenomena occur, steam and condensate will be generated. At this time, the following problems will occur: 1. Due to the temperature difference inside and outside or other reasons, the condensate and steam outside the lid assembly will penetrate inside; 2. If some products are provided with a weight ejector rod for ejecting the weight, when exhausting, the weight ejector rod moves up and down, which will also cause steam and condensate to flow into the inside of the lid assembly. When water or water vapor enters the inside of the lid assembly, it will greatly shorten the service life of electronic components such as the PCB board inside the lid assembly, and will also cause rusting of internal metal parts, resulting in poor operation of internal components and short service life. Summary of the Utility Model

[0004] To solve at least one of the above problems, the utility model provides a sealing structure for preventing water vapor from infiltrating into a cooking appliance, including: a lid assembly and an inner pot, further including an exhaust pipe, a weight, and a liftable weight ejector rod. The weight is placed at the upper end of the exhaust pipe, and the weight blocks the upper port of the exhaust pipe under its own gravity. The lower port of the exhaust pipe is communicated with the inner cavity of the inner pot. The weight ejector rod is used to push up the weight to open the upper port of the exhaust pipe for exhausting. A driving mechanism for driving the weight ejector rod to lift is provided on the lid assembly, and an installation hole for slidably installing the weight ejector rod is provided on the lid assembly.

[0005] A first sealing ring and a second sealing ring for blocking the mounting hole are arranged between the weight ejector rod and the pot lid assembly. The pot lid assembly is provided with an inner cavity, and the inner cavity is communicated with the outside through the mounting hole. The mounting hole includes a first opening close to the inner cavity and a second opening far from the inner cavity. The first sealing ring is placed on one side of the mounting hole close to the inner cavity to block the first opening; the second sealing ring is placed on one side of the mounting hole far from the inner cavity to block the second opening. In the utility model, condensate water and steam outside the pot lid assembly are not easily permeated into the inside, avoiding water damage to electronic components such as the PCB board inside the pot lid assembly, making the internal metal parts not easily rust, and having reliable use and long service life.

[0006] Preferably, the pot lid assembly includes a housing, the exhaust pipe is arranged on the housing, the mounting hole is opened on the housing, and both the first sealing ring and the second sealing ring are arranged between the housing and the weight ejector rod.

[0007] Preferably, a first annular protrusion is upwardly protruded at the first opening, and the second sealing ring abuts between the first annular protrusion and the weight ejector rod.

[0008] Preferably, the weight ejector rod includes a rod body and a limiting convex cover. The rod body is slidably arranged in the mounting hole in the vertical direction, and the second sealing ring abuts between the limiting convex cover and the first annular protrusion.

[0009] Preferably, a second annular protrusion is downwardly protruded on the limiting convex cover, and a first mounting groove for mounting the second sealing ring is formed between the second annular protrusion and the rod body.

[0010] Preferably, a second mounting groove for mounting the first sealing ring is arranged on the housing, and the first sealing ring is sleeved outside the rod body.

[0011] Preferably, the weight ejector rod further includes a ejector rod bracket, and the driving mechanism further includes an elastic member. The elastic member abuts between the ejector rod bracket and the first sealing ring, and the first sealing ring is abutted against the pot lid assembly by the elastic force of the elastic member; the elastic member is a compression spring, one end of the elastic member abuts against the first sealing ring, and the other end of the elastic member abuts against the ejector rod bracket.

[0012] Preferably, a third sealing ring and a fourth sealing ring are arranged between the exhaust pipe and the housing.

[0013] Preferably, the driving mechanism includes a motor, a turntable, a transmission rod and a transmission plate. The turntable is connected to the output end of the motor. A guide post is disposed on the turntable in a biased manner. A first sliding groove is formed in the transmission rod along its length direction. The guide post is movably disposed in the first sliding groove. The transmission rod is rotatably connected to the pot lid assembly. A limit bolt is disposed on the housing. The transmission plate is slidably disposed on the housing. A groove corresponding to the weight ejector rod is formed on the transmission plate. A guide inclined surface for lifting the weight ejector rod is disposed in the groove. A limit bolt is disposed on the housing. A second sliding groove slidably engaged with the limit bolt is formed on the transmission plate. The second sliding groove extends along the sliding direction of the transmission plate. A cylinder is disposed on the transmission rod. A third sliding groove corresponding to the cylinder is formed on the transmission plate. The cylinder is movably disposed in the third sliding groove.

[0014] Compared with the prior art, for the sealing structure of the cooking appliance for preventing water vapor from infiltrating internally in the present utility model, condensed water and steam outside the pot lid assembly are not easily permeated into the interior, avoiding damage to electronic components such as the PCB board inside the pot lid assembly due to water, making the internal metal parts not easily rust, and having reliable use and long service life; the first sealing ring and the second sealing ring are provided to seal the two openings of the mounting hole, with good sealing effect, making it difficult for external water vapor to enter the inner cavity through the mounting hole; the first annular protrusion increases the height of the first opening formed, so that the first opening is not easily filled with water; a first mounting groove for mounting the second sealing ring is formed between the second annular protrusion and the rod body, and the second sealing ring is stably mounted and has stable sealing; the elastic member can ensure that during the downward movement of the weight ejector rod, the first sealing ring always abuts between the housing and the rod body for sealing, with reliable sealing performance; a third sealing ring and a fourth sealing ring are provided between the exhaust pipe and the housing, avoiding water vapor from entering the inner cavity through the gap between the exhaust pipe and the housing, and having a long service life.

[0015] In addition, the present utility model also provides an electric pressure cooker, including the sealing structure of the cooking appliance for preventing water vapor from infiltrating internally as described above. This electric pressure cooker also has the beneficial effects of the above-mentioned sealing structure of the cooking appliance for preventing water vapor from infiltrating internally, which will not be elaborated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a perspective view of the present utility model;

[0017] Figure 2 is a structural schematic diagram of the present utility model;

[0018] Figure 3 is Figure 2 an enlarged view of part A in

[0019] Figure 4 is a cross-sectional view of the present utility model;

[0020] Figure 5 is Figure 4 an enlarged view of part B in

[0021] Figure 6 a schematic structural view of the drive plate part of the present utility model;

[0022] Figure 7 a schematic structural view of the drive rod of the present utility model;

[0023] Figure 8 a schematic structural view of the housing of the present utility model;

[0024] Figure 9 is Figure 8 an enlarged view of part C in

[0025] The corresponding component names of the respective reference numerals in the figure are: 1 is the housing, 102 is the second installation groove, 3 is the drive rod, 35 is the cylinder, 4 is the motor, 7 is the turntable, 71 is the guide post, 81 is the exhaust pipe, 82 is the weight, 83 is the weight ejector rod, 831 is the top part, 832 is the rod body, 833 is the limit convex cover, 834 is the second annular protrusion, 835 is the first installation groove, 836 is the ejector rod bracket, 9 is the drive plate, 91 is the groove, 92 is the guide inclined surface, 93 is the second chute, 94 is the third chute, 10 is the inner pot, 11 is the limit bolt, 13 is the installation hole, 131 is the first opening, 132 is the second opening, 133 is the first annular protrusion, 14 is the first sealing ring, 15 is the second sealing ring, 16 is the inner cavity, 17 is the elastic member, 18 is the third sealing ring, 19 is the fourth sealing ring, 20 is the concave cavity. Specific Embodiments

[0026] To make the above objects, features, and advantages of the present utility model more apparent and understandable, the following detailed description of the specific embodiments of the present utility model is provided in conjunction with the accompanying drawings.

[0027] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by terms such as "upper", "lower", etc. is based on the orientation or positional relationship during the normal use of the product.

[0028] The terms "first", "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first", "second" may explicitly or implicitly include at least one of such features.

[0029] Refer to Figures 1 - 9, an embodiment of the present utility model provides a sealing structure for preventing water vapor from infiltrating into a cooking appliance, including: a pot lid assembly and an inner pot 10, further including an exhaust pipe 81, a weight 82, and a weight ejector rod 83 that can move up and down in the vertical direction. The weight 82 is placed at the upper end of the exhaust pipe 81, and the weight 82 blocks the upper port of the exhaust pipe 81 under its own gravity. The lower port of the exhaust pipe 81 is communicated with the inner cavity of the inner pot 10. The weight ejector rod 83 is used to push the weight 82 upward to open the upper port of the exhaust pipe 81 for exhaust. A driving mechanism for driving the weight ejector rod 83 to move up and down is provided on the pot lid assembly. When the pot lid assembly is opened, the driving mechanism drives the weight ejector rod 83 to rise to push the weight 82, so that the exhaust pipe 81 exhausts and relieves pressure; when cooking, the driving mechanism drives the weight ejector rod 83 to descend and reset. At this time, the weight 82 blocks the upper port of the exhaust pipe 81 under its own gravity, realizing the function of pressure maintaining and pressure relieving; an installation hole 13 for slidably installing the weight ejector rod 83 in the vertical direction is provided on the pot lid assembly;

[0030] A first sealing ring 14 and a second sealing ring 15 for blocking the installation hole 13 are provided between the weight ejector rod 83 and the pot lid assembly. The pot lid assembly is provided with an inner cavity 16, and the inner cavity 16 is communicated with the outside through the installation hole 13. Components such as electronic components and metal parts are arranged in the inner cavity 16. The electronic components include components such as sensors, induction switches, and PCB boards, and the metal parts include components such as fasteners, conductive parts, and transmission parts made of metal materials. In the previous structure, the components in the inner cavity 16 were prone to damage or rust due to water vapor; the installation hole 13 includes a first opening 131 close to the inner cavity 16 and a second opening 132 far from the inner cavity 16. The first sealing ring 14 is placed on the side of the installation hole 13 close to the inner cavity 16 to block the first opening 131; the second sealing ring 15 is placed on the side of the installation hole 13 far from the inner cavity 16 to block the second opening 132. The first sealing ring 14 and the second sealing ring 15 are provided to block the two openings of the installation hole 13, and the sealing effect is good, so that external water vapor is not easily introduced into the inner cavity 16 through the installation hole 13; in the present utility model, the external condensation water and steam on the pot lid assembly are not easily permeated into the interior, avoiding damage to electronic components such as the PCB board inside the pot lid assembly due to water, and making the internal metal parts not easily rust, with reliable use and long service life.

[0031] Refer to Figure 4 , Figure 5 , Figure 8 and Figure 9, the pot lid assembly includes a housing 1, an exhaust pipe 81 is provided on the housing 1, a mounting hole 13 is opened on the housing 1, a first sealing ring 14 and a second sealing ring 15 are both provided between the housing 1 and the weight push rod 83 to achieve a sealing effect, an inner cavity 16 is formed inside the housing 1, a concave cavity 20 corresponding to the weight 82 is provided on the housing 1, and the weight push rod 83 is placed at a position inside the concave cavity 20; when the exhaust pipe 81 exhausts, water vapor will accumulate in the concave cavity 20 to avoid splashing everywhere; a first annular protrusion 133 is provided with an upward protrusion at the first opening 131, and the second sealing ring 15 abuts between the first annular protrusion 133 and the weight push rod 83. The first annular protrusion 133 increases the height formed by the first opening 131, so that the first opening 131 is not easily filled with water; the weight push rod 83 includes an integrally formed rod body 832 and a limiting convex cover 833, and the limiting convex cover 833 can limit the position where the rod body 832 moves downward; the rod body 832 is slidably placed in the mounting hole 13 in the vertical direction, and the second sealing ring 15 abuts between the limiting convex cover 833 and the first annular protrusion 133 to achieve a sealing effect; the limiting convex cover 833 is provided with a second annular protrusion 834 protruding downward, which can play a certain role in blocking water vapor from entering the first opening 131; a first installation groove 835 for installing the second sealing ring 15 is formed between the second annular protrusion 834 and the rod body 832, and the second sealing ring 15 is stably installed and the sealing is stable; a second installation groove 102 for installing the first sealing ring 14 is provided on the housing 1, and the first sealing ring 14 is stably installed and the sealing is stable; the first sealing ring 14 is sleeved on the outer side of the rod body 832, and the inner side of the first sealing ring 14 abuts against the outer wall of the rod body 832 to achieve a sealing effect.

[0032] Refer to Figures 2 - 7, the weight ejector rod 83 further includes an ejector rod bracket 836. The ejector rod bracket 836 is fixed to the lower part of the rod body 832 by bolts. The driving mechanism further includes an elastic member 17. The elastic member 17 abuts between the ejector rod bracket 836 and the first sealing ring 14. The first sealing ring 14 is abutted against the pot lid assembly by the elastic force of the elastic member 17. The elastic member 17 is a compression spring. One end of the elastic member 17 abuts against the first sealing ring 14, and the other end of the elastic member 17 abuts against the ejector rod bracket 836. The elastic member 17 is used to drive the weight ejector rod 83 to move downward and reset, and at the same time keep the first sealing ring 14 in place, that is, to ensure that during the downward movement of the weight ejector rod 83, the first sealing ring 14 always abuts between the housing 1 and the rod body 832 for sealing, and the sealing performance is reliable. A third sealing ring 18 and a fourth sealing ring 19 are arranged between the exhaust pipe 81 and the housing 1 to prevent water vapor from entering the inner cavity 16 through the gap between the exhaust pipe 81 and the housing 1, and the service life is long. The driving mechanism includes a motor 4, a turntable 7, a transmission rod 3 and a transmission plate 9. The turntable 7 is connected to the output end of the motor 4, and the motor 4 drives the turntable 7 to rotate circumferentially. A guide post 71 is disposed on the turntable 7 in a biased manner. A first chute 34 is formed in the transmission rod 3 along the length direction. The guide post 71 is movably disposed in the first chute 34. The transmission rod 3 is rotatably connected to the pot lid assembly. A limit bolt 11 is disposed on the housing 1. The transmission plate 9 is slidably disposed on the housing 1. A groove 91 corresponding to the weight ejector rod 83 is formed on the transmission plate 9. A guide inclined surface 92 for lifting the weight ejector rod 83 is disposed in the groove 91. A limit bolt 11 is disposed on the housing 1. A second chute 93 slidably engaged with the limit bolt 11 is formed on the transmission plate 9. The second chute 93 extends along the sliding direction of the transmission plate 9. A cylinder 35 is disposed on the transmission rod 3. A third chute 94 corresponding to the cylinder 35 is formed on the transmission plate 9. The cylinder 35 is movably disposed in the third chute 94. When exhaust is required, the motor 4 is controlled to rotate through an external button or program. The transmission plate 9 is driven to slide through the turntable 7 and the transmission rod 3. The top 831 of the weight ejector rod 83 is pushed upward by the guide inclined surface 92, so that the weight ejector rod 83 pushes the weight upward to exhaust. When cooking, the motor 4 is controlled to reverse through an external button or program, driving the turntable 7, the transmission rod 3 and the transmission plate 9 to reset. The weight ejector rod 83 slides downward and resets under the action of the elastic member, so that the bottom of the weight ejector rod 83 falls into the groove 91. At this time, the weight seals the upper port of the exhaust pipe, which is convenient to use.

[0033] The sealing structure of the cooking appliance of the present utility model for preventing water vapor from infiltrating internally can prevent the condensed water and steam outside the pot lid assembly from easily penetrating into the interior, avoiding water damage to electronic components such as the PCB board inside the pot lid assembly, making the internal metal parts not prone to rusting, and having reliable use and long service life. A first sealing ring and a second sealing ring are provided to seal the two openings of the mounting hole, with good sealing effect, making it difficult for external water vapor to enter the inner cavity through the mounting hole; the first annular protrusion increases the height formed by the first opening, so that the first opening is not easily filled with water; a first mounting groove for installing the second sealing ring is formed between the second annular protrusion and the rod body, and the second sealing ring is stably installed and has stable sealing; the elastic member can ensure that during the downward movement of the heavy hammer ejector rod, the first sealing ring always abuts between the housing and the rod body for sealing, with reliable sealing performance; a third sealing ring and a fourth sealing ring are provided between the exhaust pipe and the housing to prevent water vapor from entering the inner cavity through the gap between the exhaust pipe and the housing, and it has a long service life.

[0034] In addition, another embodiment of the present utility model further provides an electric pressure cooker, including the above-mentioned sealing structure of the cooking appliance for preventing water vapor from infiltrating internally; this electric pressure cooker also has the beneficial effects of the above-mentioned sealing structure of the cooking appliance for preventing water vapor from infiltrating internally, which will not be elaborated here.

[0035] The above are only the preferred embodiments of the present utility model. It should be noted that for those of ordinary skill in the art, without departing from the technical principle of the present utility model, several improvements and refinements can be made, and these improvements and refinements should also be regarded as the protection scope of the present utility model.

Claims

1. A sealing structure for preventing water vapor from infiltrating into a cooking appliance, comprising: A pot lid assembly and an inner pot (10), characterized in that it further comprises an exhaust pipe (81), a weight (82) and a liftable weight ejector rod (83). The weight (82) is placed at the upper end of the exhaust pipe (81), and the weight (82) blocks the upper port of the exhaust pipe (81) under its own gravity. The lower port of the exhaust pipe (81) communicates with the inner cavity of the inner pot (10). The weight ejector rod (83) is used to push the weight (82) upward to open the upper port of the exhaust pipe (81) for exhaust. A drive mechanism for driving the weight ejector rod (83) to lift and lower is provided on the pot lid assembly, and a mounting hole (13) for slidably mounting the weight ejector rod (83) is provided on the pot lid assembly. A first sealing ring (14) and a second sealing ring (15) for blocking the mounting hole (13) are provided between the weight ejector rod (83) and the pot lid assembly. The pot lid assembly is provided with an inner cavity (16), and the inner cavity (16) communicates with the outside through the mounting hole (13). The mounting hole (13) includes a first opening (131) close to the inner cavity (16) and a second opening (132) far from the inner cavity (16). The first sealing ring (14) is placed on one side of the mounting hole (13) close to the inner cavity (16) to block the first opening (131); the second sealing ring (15) is placed on one side of the mounting hole (13) far from the inner cavity (16) to block the second opening (132).

2. The sealing structure for preventing water vapor from infiltrating into the cooking appliance according to claim 1, wherein, The pot lid assembly includes a housing (1). The exhaust pipe (81) is provided on the housing (1), the mounting hole (13) is opened on the housing (1), and both the first sealing ring (14) and the second sealing ring (15) are provided between the housing (1) and the weight ejector rod (83).

3. The sealing structure for preventing water vapor from infiltrating into the cooking appliance according to claim 2, wherein A first annular protrusion (133) protrudes upward at the first opening (131), and the second sealing ring (15) abuts between the first annular protrusion (133) and the weight ejector rod (83).

4. The sealing structure for preventing water vapor from infiltrating into the cooking appliance according to claim 3, wherein The weight ejector rod (83) includes a rod body (832) and a limit convex cover (833). The rod body (832) slides vertically in the mounting hole (13), and the second sealing ring (15) abuts between the limit convex cover (833) and the first annular protrusion (133).

5. The sealing structure for preventing water vapor from infiltrating into the cooking appliance as claimed in claim 4, wherein A second annular protrusion (834) protrudes downward from the limit convex cover (833), and a first mounting groove (835) for mounting the second sealing ring (15) is formed between the second annular protrusion (834) and the rod body (832).

6. The sealing structure for preventing water vapor from infiltrating into the cooking appliance as claimed in claim 4, wherein, A second mounting groove (102) for mounting the first sealing ring (14) is provided on the housing (1), and the first sealing ring (14) is sleeved outside the rod body (832).

7. The sealing structure for preventing water vapor from infiltrating into the cooking appliance as described in claim 1, characterized in that, The weight ejector rod (83) further includes an ejector rod bracket (836), and the driving mechanism further includes an elastic member (17). The elastic member (17) abuts between the ejector rod bracket (836) and the first sealing ring (14), and the first sealing ring (14) is abutted against the pot lid assembly by the elastic force of the elastic member (17); the elastic member (17) is a compression spring, one end of the elastic member (17) abuts against the first sealing ring (14), and the other end of the elastic member (17) abuts against the ejector rod bracket (836).

8. The sealing structure for preventing water vapor from infiltrating into the cooking appliance according to claim 2, wherein A third sealing ring (18) and a fourth sealing ring (19) are provided between the exhaust pipe (81) and the housing (1).

9. The sealing structure for preventing water vapor from infiltrating into the cooking appliance according to claim 2, wherein The driving mechanism includes a motor (4), a turntable (7), a transmission rod (3) and a transmission plate (9). The turntable (7) is connected to the output end of the motor (4). A guide post (71) is disposed obliquely on the turntable (7). A first sliding groove (34) is formed in the transmission rod (3) along its length direction. The guide post (71) is movably disposed in the first sliding groove (34). The transmission rod (3) is rotatably connected to the pot lid assembly. The transmission plate (9) is slidably disposed on the housing (1). A groove (91) corresponding to the weight ejector rod (83) is provided on the transmission plate (9). A guide inclined surface (92) for lifting the weight ejector rod (83) is provided in the groove (91). A limit bolt (11) is provided on the housing (1). A second sliding groove (93) slidably matched with the limit bolt (11) is provided on the transmission plate (9). The second sliding groove (93) extends along the sliding direction of the transmission plate (9). A cylinder (35) is provided on the transmission rod (3). A third sliding groove (94) corresponding to the cylinder (35) is provided on the transmission plate (9). The cylinder (35) is movably disposed in the third sliding groove (94).

10. An electric pressure cooker, characterized in that, It includes a sealing structure for preventing water vapor from infiltrating into the cooking appliance as described in any one of claims 1-9.

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