Pressure-maintaining and pressure-limiting discharge type valve body for electric rice cooker and electric rice cooker with valve body
By designing a pressure-holding and pressure-limiting outer discharge valve body in the rice cooker, the difficulty in consistency control and moisture loss caused by direct steam discharge is solved, and more efficient cooking and safer use is achieved.
Patent Information
- Application Number
- CN202421561145.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-03
- Publication Date
- 2025-05-13
- Estimated Expiration
- 2034-07-03
AI Technical Summary
The pressure relief structure of the existing rice cooker causes the direct discharge of steam when cooking porridge or liquid food, affects consistency control and has the problem of water loss.
Design an external discharge valve body for rice cooker that holds pressure and limits pressure, including valve housing components, ventilation pipes, pressure limiting valve balls, pressure-retaining check valve plates, etc. Through the cooperation of these components, the pressure-retaining and pressure-retaining effects are achieved to avoid direct discharge of steam.
It improves cooking efficiency, reduces moisture loss, ensures food consistency control, and improves the safety of the use of rice cookers.
Smart Images
Figure CN222853676U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of pressure relief structures and electric rice cookers, in particular to an external discharge valve body for maintaining and limiting pressure for an electric rice cooker and an electric rice cooker with the valve body. Background Art
[0002] At present, some electric rice cookers are provided with exhaust holes on their lids. When the water in the electric rice cooker boils violently, part of the steam is discharged through the exhaust holes to avoid accidents caused by excessive air pressure in the electric rice cooker. Since the exhaust holes are connected to the external atmosphere, the air pressure in the electric rice cooker is equal to the external environment. The exhaust holes are always connected to the outside world. During the initial boiling, the steam can be directly discharged through the exhaust holes, and more water is discharged through the steam. When the electric rice cooker is used to cook porridge or liquid food, it is not conducive to accurately controlling the consistency of the porridge or liquid food in the pot of the electric rice cooker. Therefore, it is necessary to improve the pressure relief structure of the electric rice cooker in the prior art. Summary of the invention
[0003] The utility model aims to overcome the deficiencies of the prior art and firstly provides an external discharge valve body for maintaining and limiting pressure for an electric rice cooker, which can improve cooking efficiency, is easy to use, saves energy and reduces water loss, and has a detachable structure for easy cleaning.
[0004] The purpose of the utility model is achieved through the following technical solutions.
[0005] The utility model discloses an external-discharge valve body for maintaining and limiting pressure for an electric rice cooker, comprising a valve shell assembly, a valve cavity is formed in the valve shell assembly, a vent pipe for communicating with a pot chamber is formed in the valve cavity, a top port is formed at the upper end of the vent pipe, a pressure-limiting valve ball is arranged in the valve cavity, the pressure-limiting valve ball is placed on the top port, an exhaust port is formed at the top of the valve shell assembly, a water return hole for communicating with the pot chamber is formed at the bottom of the valve cavity, a pressure-maintaining one-way valve sheet for closing the water return hole is slidably connected to the valve shell assembly up and down, the pressure-maintaining one-way valve sheet is formed with a cover sheet body, and the cover sheet body is correspondingly arranged at the lower side of the water return hole.
[0006] Preferably, a limiting tube is formed in the valve cavity, the lower end of the limiting tube is integrally connected with the bottom of the valve cavity, and the pressure-limiting valve ball and the vent pipe are arranged in the limiting tube.
[0007] Preferably, a mounting hole is formed at the bottom of the valve cavity, the return water hole is arranged around the outside of the mounting hole, the pressure-maintaining one-way valve plate is formed with a sliding column portion, the upper end of the sliding column portion is integrally connected with a barbed hook portion, the lower end of the sliding column portion is integrally connected with the cover plate body, the sliding column portion is adapted to be slidably arranged in the mounting hole, and the barbed hook portion is located on the upper side of the mounting hole.
[0008] Preferably, the lower end of the limiting tube is connected to the corresponding water return hole.
[0009] Preferably, a dome cover portion for blocking the pressure-limiting valve ball is formed on the upper portion of the valve housing assembly, the dome cover portion is located above the corresponding portion of the pressure-limiting valve ball, the exhaust port is formed on the dome cover portion, the exhaust port includes a central exhaust hole and an annular exhaust hole, the annular exhaust hole is arranged outside the central exhaust hole, the dome cover portion is formed with an inner arc surface, the radius of the inner arc surface is greater than the radius of the pressure-limiting valve ball.
[0010] Preferably, the valve housing assembly includes a shell body and a cover, the shell body includes a lower cover and an upper shell, the return hole is formed on the lower cover, the exhaust port is formed on the cover, the cover is covered on the upper shell, the cover is connected to the upper shell by fasteners, and the upper end of the lower cover is screwed to the lower end of the upper shell.
[0011] The utility model also provides an electric rice cooker, comprising the external-discharge valve body for maintaining and limiting pressure for the electric rice cooker as described in any of the above technical solutions; and also comprising a cooker cover, on which the external-discharge valve body for maintaining and limiting pressure for the electric rice cooker is arranged.
[0012] Compared with the prior art, the utility model has the following beneficial effects: (i) a valve cavity is formed in the valve housing assembly, a vent pipe for connecting to the pot chamber is formed in the valve cavity, a top port is formed at the upper end of the vent pipe, a pressure limiting valve ball is provided in the valve cavity, the pressure limiting valve ball is placed on the top port, an exhaust port is formed at the top of the valve housing assembly, a return hole for connecting to the pot chamber is formed at the bottom of the valve cavity, a pressure-maintaining one-way valve plate for closing the return hole is slidably connected to the valve housing assembly up and down, the pressure-maintaining one-way valve plate is formed with a cover plate body, and the cover plate body is correspondingly arranged at the lower side of the return hole, so that the valve body of the utility model has a pressure-maintaining effect and a pressure-limiting effect, thereby improving the cooking efficiency and also helping to improve the safety of the use of the electric rice cooker. The valve body of the utility model can reduce the water loss during the cooking process. (ii) Since the electric rice cooker of the utility model is provided with the above-mentioned valve body, the electric rice cooker of the utility model can further improve the cooking efficiency and reduce the water loss. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] Figure 1 It is a schematic cross-sectional structure diagram of the valve body of the utility model.
[0014] Figure 2 It is a top view of the three-dimensional structure of the valve body of the utility model.
[0015] Figure 3 It is a bottom-up stereoscopic cross-sectional structural schematic diagram of the valve body of the utility model.
[0016] Figure 4 It is an exploded schematic diagram of the valve body of the utility model.
[0017] Figure 5 It is a top view of the three-dimensional structure of the shell body of the utility model.
[0018] Figure 6 It is a bottom-up three-dimensional structural schematic diagram of the lid of the utility model.
[0019] Figure 7 It is a top view of the three-dimensional structure of the pressure-maintaining one-way valve plate of the utility model.
[0020] Figure 8 It is an exploded schematic diagram of the shell body of the utility model.
[0021] Fig. 9 The utility model is a front perspective structural schematic diagram of an electric rice cooker with a valve body.
[0022] Fig.10 The utility model is a cross-sectional structural schematic diagram of an electric rice cooker having a valve body according to the utility model as viewed from the right side.
[0023] Fig.11 The utility model is a bottom-up stereoscopic structural schematic diagram of a rice cooker cover having a valve body.
[0024] Fig.12 The utility model is an exploded schematic diagram of a rice cooker lid having a valve body of the utility model.
[0025] Explanation of reference numerals: valve housing assembly 1; valve cavity 100; vent pipe 101; top port 1011; limit pipe 102; return hole 103; mounting hole 104; exhaust port 105; central exhaust hole 1051; ring exhaust hole 1052; housing body 11; lower cover 111; screw-on groove 1111; upper housing 112; inner protrusion 1121; lid 12; dome cover portion 121; inner arc surface 1211; connecting pipe portion 13; pressure-limiting valve ball 2; pressure-maintaining one-way valve plate 3; cover plate body 31; sliding column portion 32; inverted hook portion 33; sealing frame 4; pot body 991; pot core 9911; pot cover 992; lower cover plate 9921; vent port 9922; connecting rubber sleeve 9923; groove 9924. DETAILED DESCRIPTION
[0026] The utility model is further described below in conjunction with the accompanying drawings.
[0027] The utility model is a pressure-maintaining and pressure-limiting external discharge valve body for an electric rice cooker, such as Figures 1 to 4 As shown, it includes a valve housing component 1, a valve cavity 100 is formed in the valve housing component 1, a vent pipe 101 for connecting to the pot 9911 is formed in the valve cavity 100, and the vent pipe 101 is extended in the up-down direction, as shown in FIG. Figure 5As shown, the upper end of the vent pipe 101 is formed with a top port 1011, and the lower end of the vent pipe 101 passes through the bottom of the valve cavity 100, as shown in FIG. Figure 1 As shown, a pressure limiting valve ball 2 is disposed in the valve cavity 100, and the pressure limiting valve ball 2 is placed on the top port 1011. At this time, the center of the pressure limiting valve ball 2 is on the axis of the vent pipe 101, and the lower part of the pressure limiting valve ball 2 is partially sunken into the top port 1011. The inner diameter of the top port 1011 is significantly smaller than the diameter of the pressure limiting valve ball 2, so that the top port 1011 can support the pressure limiting valve ball 2. Figure 2 As shown, the top of the valve housing assembly 1 is formed with an exhaust port 105. Figure 5 As shown, the bottom of the valve cavity 100 is formed with a water return hole 103 that can communicate with the pot 9911. Figure 1 and Figure 3 As shown, the valve housing assembly 1 is slidably connected to a pressure-maintaining one-way valve plate 3 for closing the return water hole 103, as shown in FIG. Figure 7 As shown, the pressure-maintaining one-way valve plate 3 is formed with a cover plate body 31, as shown in FIG. Figure 1 and Figure 3 As shown, the cover plate 31 is correspondingly arranged at the lower side of the water return hole 103 .
[0028] like Fig. 9 and Fig.12 As shown, the external discharge valve body for maintaining and limiting pressure for the electric rice cooker of the utility model is arranged on the cover 992 of the electric rice cooker, and a groove 9924 is formed on the cover 992, and the valve housing assembly 1 is inserted into the groove 9924, as shown in FIG. Fig.10 As shown, when the pot cover 992 and the pot body 991 are closed, the lower end of the ventilation pipe 101 is located above the corresponding pot 9911, so the ventilation pipe 101 is connected to the pot 9911. Specifically, Fig.11 As shown, a lower cover plate 9921 is provided on the lower side of the pot cover 992, and a vent hole is formed on the lower cover plate 9921. Figure 1 As shown, the lower end of the valve housing assembly 1 is also formed with a connecting pipe portion 13, and the lower end of the vent pipe 101 and the return hole 103 are both within the range of the connecting pipe portion 13. Fig.10As shown, the connecting pipe part 13 is adapted to be inserted into the upper part of the connecting rubber sleeve 9923, and the lower end of the connecting rubber sleeve 9923 is connected to the above-mentioned vent hole. The connecting rubber sleeve 9923 can be made of silicone rubber. When the electric rice cooker is working, the water in the pot 9911 initially boils, so the air pressure in the pot 9911 gradually rises, and because the pressure-limiting valve ball 2 is pressed against the edge of the top port 1011 by gravity, the top port 1011 is closed by the pressure-limiting valve ball 2, and because the cover plate body 31 is correspondingly arranged on the lower side of the return hole 103, when the air pressure in the pot 9911 is slightly greater than the external air pressure, the gas in the pot 9911 will push the cover plate body 31 upward to the outer bottom of the valve cavity 100. The cover plate 31 closes the water return hole 103, so that the air pressure in the pot 9911 rises rapidly. At this time, the heat in the pot 9911 will not be lost to the outside through the steam, which is beneficial to energy saving and improving cooking efficiency. In other words, the pressure-maintaining one-way valve plate 3 plays a pressure-maintaining role, preventing the steam in the pot 9911 from being directly discharged to the outside through the water return hole 103; the steam cannot be discharged through the water return hole 103, so the pressure-maintaining one-way valve plate 3 has a one-way connection effect.Afterwards, the water in the pot 9911 boils violently, and the air pressure in the pot 9911 further increases, so the steam overcomes the gravity of the pressure-limiting valve ball 2 and pushes up the pressure-limiting valve ball 2, so that the top port 1011 is opened, thereby achieving pressure relief, limiting the air pressure in the pot 9911, avoiding accidents, and being beneficial to improving the safety of the rice cooker. After the pressure relief, the air pressure in the pot 9911 is reduced, and the pressure-limiting valve ball 2 can fall down and close the top port 1011 by gravity; the pressure-limiting valve ball 2 can be suspended away from the top port 1011 under the push of steam, and a large amount of water will be discharged into the valve cavity 100 in the form of steam. Since the steam flows along the lower part of the pressure-limiting valve ball 2, the steam will disperse and fill the valve cavity 100, and the steam will be blocked and cooled in the valve cavity 100, and the water in the steam will be converted into liquid and deposited in the lower part of the valve cavity 100, and the high-pressure gas in the valve cavity 100 will be discharged through the exhaust port 105. In other words, by The pressure valve ball 2 is arranged in the valve cavity 100 to prevent the steam from directly spreading to the external environment, but to allow a part of the water in the steam to remain in the valve cavity 100; when the water in the valve cavity 100 accumulates to a certain extent, the gravity of the water overcomes the thrust of the steam on the pressure-maintaining one-way valve plate 3, and the gravity of the water can push the pressure-maintaining one-way valve plate 3 downward, and the pressure-maintaining one-way valve plate 3 moves downward to open the return water hole 103, and the water can fall back into the pot 9911 (through the above-mentioned vent holes), thereby reducing water loss during cooking, preventing the rice from being too dry and hard, and preventing the porridge from being too thick when used for cooking porridge; during the cooking process, as the water gradually decreases and is absorbed by the rice, the air pressure in the pot 9911 decreases, and the pressure-limiting valve ball 2 will fall down and close the top port 1011 by gravity, and the pressure-maintaining one-way valve plate 3 that has lost the support of steam pressure will also be pushed downward by the gravity of the water in the lower part of the valve cavity 100, so that the return water hole 103 opens. The utility model integrates the pressure-maintaining structure and the pressure-limiting structure in the valve housing assembly 1, which is conducive to simplifying the structure of the pot cover 992. Since the spherical structure of the pressure-limiting valve ball 2 is isotropic, when the pressure-limiting valve ball 2 falls and resets, it can flexibly return to the top port 1011 through the spherical surface guide to be closely connected with the top port 1011 to avoid air leakage.
[0029] Furthermore, if Figure 1 and Figure 5As shown, a limiting tube 102 is formed in the valve cavity 100, and the lower end of the limiting tube 102 is connected to the bottom of the valve cavity 100 as a whole, and the pressure-limiting valve ball 2 and the vent pipe 101 are arranged in the limiting tube 102. That is to say, the inner diameter of the limiting tube 102 is slightly larger than the diameter of the pressure-limiting valve ball 2, so that the pressure-limiting valve ball 2 obtains a certain activity space along the radial direction of the limiting tube 102 in the limiting tube 102, so as to prevent the limiting tube 102 from hindering the up and down movement of the pressure-limiting valve ball 2. By setting the limiting tube 102 to limit the radial (horizontal) activity range of the pressure-limiting valve ball 2, it is prevented that the center of the pressure-limiting valve ball 2 is supported by the top port 1011, and it is prevented that the pressure-limiting valve ball 2 is horizontally separated from the top port 1011, which is conducive to the pressure-limiting valve ball 2 to quickly and flexibly reset and close the top port 1011.
[0030] Furthermore, if Figure 5 As shown, a mounting hole 104 is formed at the bottom of the valve cavity 100, and a water return hole 103 is arranged around the outside of the mounting hole 104. The water return hole 103 is fan-shaped, and the number of the water return holes 103 can be set to four, such as Figure 7 As shown, the pressure-maintaining one-way valve plate 3 is formed with a sliding column portion 32, the upper end of the sliding column portion 32 is integrally connected with a hook portion 33, and the lower end of the sliding column portion 32 is integrally connected with the central part of the cover plate body 31, as shown in FIG. Figure 1 As shown, the sliding column part 32 is adapted to slide in the mounting hole 104, and the hook part 33 is located on the upper side of the mounting hole 104, so the edge of the mounting hole 104 is limited to move relatively between the hook part 33 and the cover plate body 31 to prevent the pressure-maintaining one-way valve plate 3 from falling. The pressure-maintaining one-way valve plate 3 can be made of silicone rubber. When assembling the pressure-maintaining one-way valve plate 3, it is necessary to force the hook part 33 upward and over the mounting hole 104. Since the return hole 103 is surrounded by the outer side of the mounting hole 104, it is beneficial for the pressure-maintaining one-way valve plate 3 to be uniformly stressed and for the pressure-maintaining one-way valve plate 3 to flexibly open the return hole 103. The connection structure between the pressure-maintaining one-way valve plate 3 and the bottom of the valve cavity 100 is simple and easy to manufacture.
[0031] Furthermore, if Figure 5 As shown, the lower end of the limiting tube 102 is connected to the corresponding water return hole 103. In other words, the lower end of the limiting tube 102 and the water return port formed by the four water return holes 103 have an overlapping area, so that the water falling into the limiting tube 102 can fall into the pot 9911 through the corresponding water return hole 103, avoiding the accumulation of water in the limiting tube 102. The above structural setting avoids the need to set an independent water return structure for the limiting tube 102. It should be noted that, if Figure 5 As shown, the water return hole 103 is located outside the lower end of the vent pipe 101 , so the cover sheet 31 will not hinder the vent pipe 101 .
[0032] Furthermore, if Figure 2As shown, the upper portion of the valve housing assembly 1 is formed with a dome portion 121 for blocking the pressure-limiting valve ball 2, that is, the dome portion 121 is in an upwardly arched shape, such as Figure 1 and Figure 3 As shown, the dome cover 121 is located above the corresponding pressure limiting valve ball 2, and the exhaust port 105 is formed in the dome cover 121. The exhaust port 105 includes a central exhaust hole 1051 and an annular exhaust hole 152. The annular exhaust hole 152 is arranged outside the central exhaust hole 1051. Figure 6 As shown, the dome cover portion 121 is formed with an inner arc surface 1211, that is, the inner arc surface 1211 is in an upwardly concave shape. Figure 1 As shown, the radius of the inner arc surface 1211 is greater than the radius of the pressure-limiting valve ball 2, so when the steam pushes up the pressure-limiting valve ball 2, the upper end of the pressure-limiting valve ball 2 contacts the inner arc surface 1211, avoiding the pressure-limiting valve ball 2 from moving upward too much, which is conducive to making the pressure-limiting valve ball 2 fall and reset flexibly. When the pressure-limiting valve ball 2 is pushed up by the steam and suspended, the pressure-limiting valve ball 2 can remain close to the inner arc surface 1211. Since the steam is guided and dispersed by the lower part of the pressure-limiting valve ball 2, the exhaust port 105 is formed in the dome cover part 121, and the steam is also avoided from being discharged directly from the exhaust port 105; since the radius of the inner arc surface 1211 is greater than the radius of the pressure-limiting valve ball 2, theoretically the pressure-limiting valve ball 2 is in point contact with the inner arc surface 1211, which avoids the pressure-limiting valve ball 2 from closing the exhaust port 105; when the pressure-limiting valve ball 2 floats to the inner arc surface 1211, the inner arc surface 1211 has a horizontal limiting effect on the pressure-limiting valve ball 2.
[0033] Furthermore, if Figures 1 to 4 As shown, the valve housing assembly 1 includes a housing body 11 and a cover 12, and the housing body 11 includes a lower cover 111 and an upper housing 112. Figure 5 As shown, the water return hole 103 is formed in the lower cover 111, that is, the mounting hole 104 is also formed at the bottom of the lower cover 111. Figure 2 and Figure 4 As shown, the exhaust port 105 is formed on the cover 12, and the cover 12 is covered on the upper shell 112. The cover 12 and the upper shell 112 are connected by fasteners. Specifically, as shown in Figure 3 As shown, a sealing frame 4 is provided between the edge of the cover 12 and the upper shell 112, and screws are used to pass through the upper shell 112 upward and screwed to the cover 12, as shown in FIG. Figure 3 As shown, the upper end of the lower cover 111 is screwed and connected to the lower end of the upper shell 112. Specifically, as shown in Figure 8As shown, a screw groove 1111 is formed on the outer wall of the upper end of the lower cover 111, and three screw grooves 1111 are evenly distributed in the circumferential direction. The lower part of the upper shell 112 is a tubular structure, and an inner convex block 1121 is formed on the inner wall of the above-mentioned tubular structure. In the process of assembling the upper shell 112 and the lower cover 111, the upper end of the lower cover 111 is first inserted upward into the above-mentioned tubular structure, and then the lower cover 111 is rotated counterclockwise (in the top view direction), so that the inner convex block 1121 can be screwed into the corresponding screw groove 1111, so that the lower cover 111 and the upper shell 112 are positioned relative to each other in the up and down direction. When it is necessary to disassemble the shell body 11, it is only necessary to rotate the lower cover 111 in the opposite direction to disengage the screw groove 1111 from the corresponding inner protrusion 1121, and then the lower cover 111 can be pulled away from the upper shell 112 along the axial direction, and the valve body of the utility model can be disassembled, so that the internal cleaning operation of the pressure-maintaining and pressure-limiting external discharge valve body of the rice cooker of the utility model can be conveniently performed.
[0034] The utility model also communicates an electric rice cooker, such as Figures 9 to 12 As shown, it includes a cooker cover 992 and also includes the external exhaust valve body for maintaining and limiting pressure for the electric rice cooker as mentioned above. The external exhaust valve body for maintaining and limiting pressure for the electric rice cooker is arranged on the cooker cover 992. As mentioned above, since the electric rice cooker of the utility model is provided with the valve body of the utility model, the electric rice cooker of the utility model can further improve cooking efficiency and reduce water loss.
Claims
1. An external discharge valve body for maintaining and limiting pressure for an electric rice cooker, characterized in that: The invention comprises a valve housing component (1), wherein a valve cavity (100) is formed in the valve housing component (1), a vent pipe (101) for connecting to a pot container (9911) is formed in the valve housing component (100), a top port (1011) is formed at the upper end of the vent pipe (101), a pressure-limiting valve ball (2) is provided in the valve housing component (100), the pressure-limiting valve ball (2) is placed on the top port (1011), an exhaust port (105) is formed at the top of the valve housing component (1), a water return hole (103) capable of connecting to the pot container (9911) is formed at the bottom of the valve housing component (100), a pressure-maintaining one-way valve plate (3) for closing the water return hole (103) is slidably connected to the valve housing component (1) up and down, the pressure-maintaining one-way valve plate (3) is formed with a cover plate body (31), and the cover plate body (31) is correspondingly arranged at the lower side of the water return hole (103).
2. The external-discharge valve body for maintaining and limiting pressure for an electric rice cooker according to claim 1, characterized in that: A limit tube (102) is formed in the valve cavity (100), the lower end of the limit tube (102) is integrally connected to the bottom of the valve cavity (100), and the pressure-limiting valve ball (2) and the vent tube (101) are arranged in the limit tube (102).
3. The external-discharge valve body for maintaining and limiting pressure for an electric rice cooker according to claim 2, characterized in that: The bottom of the valve cavity (100) is formed with a mounting hole (104), the return hole (103) is arranged around the outside of the mounting hole (104), the pressure-maintaining one-way valve plate (3) is formed with a sliding column portion (32), the upper end of the sliding column portion (32) is integrally connected with a barbed portion (33), the lower end of the sliding column portion (32) is integrally connected with the cover plate body (31), the sliding column portion (32) is adapted to be slidably arranged in the mounting hole (104), and the barbed portion (33) is located on the upper side of the mounting hole (104).
4. The external-discharge valve body for maintaining and limiting pressure for an electric rice cooker according to claim 3, characterized in that: The lower end of the limiting tube (102) is connected to the corresponding water return hole (103).
5. The external-discharge valve body for maintaining and limiting pressure for an electric rice cooker according to any one of claims 1 to 4, characterized in that: A dome cover portion (121) for blocking the pressure-limiting valve ball (2) is formed on the upper portion of the valve housing assembly (1); the dome cover portion (121) is located above the pressure-limiting valve ball (2); the exhaust port (105) is formed on the dome cover portion (121); the exhaust port (105) includes a central exhaust hole (1051) and an annular exhaust hole (152); the annular exhaust hole (152) is arranged outside the central exhaust hole (1051); the dome cover portion (121) is formed with an inner arc surface (1211); the radius of the inner arc surface (1211) is greater than the radius of the pressure-limiting valve ball (2).
6. The external-discharge valve body for maintaining and limiting pressure for an electric rice cooker according to any one of claims 1 to 4, characterized in that: The valve housing assembly (1) comprises a housing body (11) and a cover (12), wherein the housing body (11) comprises a lower cover (111) and an upper housing (112), wherein the water return hole (103) is formed on the lower cover (111), and the exhaust port (105) is formed on the cover (12), and the cover (12) is mounted on the upper housing (112). The cover (12) and the upper housing (112) are connected via fasteners, and the upper end of the lower cover (111) is screw-connected to the lower end of the upper housing (112).
7. An electric rice cooker, comprising a rice cooker cover (992), characterized in that: It comprises the pressure-maintaining and pressure-limiting external-discharge valve body for an electric rice cooker as claimed in any one of claims 1 to 6, wherein the pressure-maintaining and pressure-limiting external-discharge valve body for an electric rice cooker is arranged on the rice cooker cover (992).