JP5431399B2 - Pressure cooker - Google Patents

Description

  The present invention relates to a pressure cooker.

  In recent years, abundant nutrients of millet grains have attracted attention, and the number of users who cook millet rice in which millet grains are mixed with white rice is increasing. However, some cereals float on the water, and when they sprout in the inner pot during cooking, they can enter the steam passage provided in the lid that covers the inner pot and close the valve. There is sex.

  Therefore, in the rice cooker disclosed in Patent Document 1 and Patent Document 2, the entry of the fine particles is prevented at the entrance of the steam passage so as to be able to cope with cooking of cooked foods including fine particles floating in water. A filter is attached to the inner lid. In these rice cookers, the filter is made detachable from the rice cooker in order to prevent the fine particles from entering the steam passage and to provide cleaning properties.

  However, in these rice cookers, after removing the filter from the rice cooker and washing it, if the cooked food containing fine particles floating in the water without attaching the filter due to forgetting to attach etc., the steam passage valve is also blocked. In addition, the internal pressure of the pressure cooker may rise to an abnormal pressure.

JP 2007-29403 A JP 2009-291262 A

  An object of the present invention is to reliably prevent the internal pressure during pressure cooking from becoming an abnormal pressure.

  As means for solving the above problems, the pressure cooker according to the present invention includes a main body that houses the inner pot having an upper end opening, and an exhaust that is rotatably attached to the main body and communicates the inside and the outside of the inner pot. A lid having a passage; an inner lid that is detachably provided on the lid, closes an upper end opening of the inner pot, and has a first through hole connected to the exhaust passage; and is provided on the inner lid. A valve structure that is disposed on the exhaust passage side of the first through hole and opens / closes or adjusts the opening of the exhaust passage, and is inserted into the first through hole of the inner lid from the inner pan side. Pressure regulation which has an insertion part locked to a structure, a valve seat including a flange part larger than the first through-hole of the inner lid, and a vent hole communicating the inside of the inner pot and the valve structure And the inner lid side of the inner lid so as to surround the ventilation hole of the pressure regulating part. A filter base portion formed with an insertion hole through which the insertion portion of the valve seat is inserted, and an openable and closable attachment to the filter base portion to communicate the inside of the inner pot and the exhaust passage, and a cooked food. A filter set having a filter portion in which a filter hole that is not allowed to pass is formed, and when the insertion portion of the valve seat is locked to the valve structure, the filter base is formed by the inner lid and the flange portion of the valve seat. The filter set is mounted on the inner lid so as not to be removable.

  According to this configuration, with the filter portion opened, the insertion portion of the valve seat is inserted from the inner pan side in the order of the insertion hole of the filter base portion and the first through hole of the inner lid, and the flange portion is connected to the filter base portion. The valve structure disposed on the exhaust passage side of the inner lid can be locked and connected to the valve seat. As a result, the filter base portion can be sandwiched between the inner lid and the flange portion of the valve seat of the pressure adjusting portion, and the filter set can be attached to the inner lid in a non-removable manner. By closing the filter portion, the cooked food cannot pass through the filter hole of the filter portion, so that it is possible to prevent the cooked food from entering the vent hole of the pressure adjusting portion from the inner pot and blocking the vent hole. Thereby, since an exhaust passage does not become a blockade state, it can prevent reliably that the internal pressure of the inner pot during pressure cooking turns into abnormal pressure. In addition, since the filter set is detachably attached to the inner lid, the filter set can be cleaned together with the inner lid, and the filter unit can be opened to reliably clean not only the outside but also the inside of the filter set. And it can prevent reliably that rice cooking is started accidentally in the state which is not equipped with a filter set.

  A hinge connecting portion that connects the filter base portion and the filter portion; and an interference portion that is provided on the filter portion and interferes with the main body when the lid is closed with the filter portion open. Is preferred. According to this configuration, when the lid is closed with the filter portion opened, the interference portion of the filter portion interferes with the main body and the user notices that, so that the lid is prevented from being accidentally closed in this state. it can. Therefore, it is possible to prevent cooking from being erroneously started in a state where the filter unit is not closed.

  It is preferable to further provide a biasing member that biases the filter portion in the closing direction and an engagement portion that maintains the filter portion in an open state. According to this configuration, the filter portion can be temporarily fixed with the engaging portion opened. When the lid is closed in the temporarily fixed state, the interference portion of the filter portion interferes with the main body, and the engagement portion is disengaged, thereby automatically removing the filter portion urged in the closing direction by the urging member. Can be closed. Therefore, it is possible to prevent cooking from being erroneously started in a state where the filter unit is not closed.

  It is preferable that a dew receiving portion is provided on the inner lid so that the inner lid is positioned below the inner lid with the lid open. According to this configuration, when the lid is opened, the water droplets adhering to the inner lid travel along the inner lid and are stored in the dew receiving part below the inner lid, so that the food in the inner pan falls on the food. Can be prevented.

  It is preferable that the dew receiving part is provided in the filter set connected to the inner lid. According to this configuration, water droplets condensed by the filter set can be taken into the dew receiving part. In particular, the filter set located on the inner pan side of the inner lid is less likely to be heated because it is less heated than the inner lid, and condensation tends to occur. It can be taken into the dew receiving part. Further, the dew receiving portion can be provided integrally with the filter set without being provided as a separate member.

  It is preferable to provide a backflow prevention part in the dew receiving part. According to this configuration, when the lid is closed, it is possible to prevent water droplets stored in the dew receiving part from flowing backward and out of the dew receiving part.

  It is preferable to provide a water collection guide part on the outer periphery of the filter part. According to this structure, the water droplet adhering to the filter part can be reliably guided to the dew receiving part without flowing out from the outer peripheral edge to the outside by the water collecting guide part.

  A second through hole provided in the inner lid and communicated with the exhaust passage, and a valve body accommodating portion provided in the filter base portion and communicated with the second through hole and having a larger surface than the second through hole. An elastically deformable elastic portion that is accommodated in the valve body accommodating portion and closes the second through hole, and an object to be accommodated having a sandwiched portion adjacent to the elastic portion, It is preferable that the sandwiched portion is sandwiched between the inner lid and the filter base portion. According to this structure, the elastic part is the second through-hole of the inner lid with the inner lid and the filter base part holding the held part of the object to be received and the elastic part being accommodated in the valve body accommodating part of the filter base part. The hole can be closed. When pressure is applied from the inner pan side to the exhaust passage side during pressure cooking, the elastic portion of the container to be accommodated does not enter the second through hole and the elastic portion contacts the inner lid and closes the second through hole. Therefore, pressure leakage from the inner pot to the exhaust passage can be prevented. Then, after cooking, when the temperature of the cooked product is lowered and the pressure in the inner pan is lower than the pressure in the exhaust passage, the pressure difference between the exhaust passage side and the inner pan side causes the second through hole in the inner lid to pass through. Since the pressure is applied and elastically deforms from the valve body housing part of the filter base part to the inner pot side, the second through hole is opened. Therefore, since the pressure in the inner pot and the exhaust passage is equalized, it is possible to avoid the lid from not being opened.

  The pressure adjusting unit preferably includes both a pressure adjusting valve and a relief valve. According to this configuration, each of the pressure regulating valve and the relief valve can be prevented from being blocked by the food with the single filter set, and each of the pressure regulating valve and the relief valve can be normally operated.

  According to the present invention, since the cooked product cannot pass through the filter hole of the filter part, it is possible to prevent the cooked product from entering the vent hole of the pressure adjusting unit from the inside pot and blocking the vent hole. Thereby, since an exhaust passage does not become a blockade state, it can prevent reliably that the internal pressure of the inner pot during pressure cooking turns into abnormal pressure. In addition, by locking the insertion portion of the valve seat inserted in order of the insertion hole of the filter base portion and the first through hole of the inner lid from the inner pot side to the valve structure disposed on the exhaust passage side of the inner lid, The filter base can be sandwiched between the inner lid and the flange portion of the valve seat of the pressure adjusting portion, and the filter set can be attached to the inner lid in a non-removable manner. Therefore, it is possible to prevent the user from using the filter set in a state where the filter set is not attached to the inner lid, and it is possible to reliably prevent the internal pressure of the inner pot from becoming an abnormal pressure.

Sectional drawing which shows the rice cooker of embodiment of this invention. The figure which shows the filter set arrange | positioned by the inner cover. The perspective view which shows the structure of a cover body. The disassembled perspective view of a filter set. (A) is a figure which shows the pressure regulation valve, relief valve, and filter set which were arrange | positioned by the inner cover, (b) is sectional drawing of a filter part. (A) is a figure which shows the contact part of a filter base part, (b) is sectional drawing of the negative pressure prevention valve accommodation hole of a filter base part. (A) is a figure which shows a filter part, (b) is sectional drawing of the axial part of a filter part. The lock member is shown, (a) is a plan view thereof, (b) is a rear view thereof, (c) is a side view thereof, and (d) is a bottom view thereof. The figure which shows a negative pressure prevention valve. The figure which shows the negative pressure prevention valve clamped by the inner cover and the filter set. The recirculation | reflux valve | bulb is shown, (a) is the top view, (b) is the back view, (c) is the side view. The figure which shows the interference part of a filter set. (A) And (b) is a figure which shows the assembly | attachment procedure to the inner cover of a filter set. (A) is a figure which shows the state in which the reflux hole of the filter part was obstruct | occluded, (b) is a figure which shows the state in which the reflux hole of the filter part was open | released. (A) is a figure which shows the state which closed the filter part, (b) is a figure which shows the state which opened the filter part. The figure which shows the movement path | route of the water droplet which propagates a filter part. (A) is a figure which shows the valve mechanism when the inside of an inner pot is normal pressure, (b) is a figure which shows the flow of the high pressure steam when the inside of an inner pot becomes abnormal pressure. (A) And (b) is a figure which shows the modification of a filter set. The figure which shows the modification of an interference part.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  FIG. 1 shows a pressure cooker that is an example of a pressure cooker according to an embodiment of the present invention. This pressure rice cooker includes a main body 11 that detachably accommodates an inner pot 10 that is heated by electromagnetic induction, and a lid body 23 that is rotatably attached to the main body 11. An inner lid 60 is detachably attached to the lid body 23. In addition, an exhaust passage that communicates the inside of the inner lid 10 and the outside is provided inside the lid body 23. As shown in FIG. 2, the inner lid 60 of the rice cooker is provided with a filter set 110 that prevents the exhaust passage from being blocked by the food.

  The main body 11 includes an exterior body including a cylindrical body 12, a bottom body 13 that closes a lower end opening of the body 12, and a shoulder body 14 that is attached so as to cover the upper end opening of the body 12. This shoulder body 14 is provided with an opening 15 for detachably placing the inner pot 10 at its approximate center, and the closed state of the lid body 23 is maintained on the front side (left side in FIG. 1) of the opening 15. An engagement receiving portion 16 made of a hole is provided. In addition, a cylindrical inner cylinder 17 and a saucer-shaped protective frame 18 made of a non-conductive material are disposed in the opening 15 of the shoulder body 14. An induction heating coil 19 is disposed on the outer peripheral surface of the lower portion of the protective frame 18 via a ferrite core 20. A cylinder heater 21 is disposed on the outer periphery of the inner cylinder 17. Furthermore, the protective frame 18 is provided with an inner pot temperature sensor 22 (thermistor) that passes through the protective frame 18 and detects the temperature of the cooked food through the inner pot 10.

  The lid body 23 is attached to a hinge receiving portion formed on the back portion of the shoulder body 14 so as to be able to be opened and closed (turned), and closes the upper end opening of the main body 11. The lid body 23 includes an upper plate 24 that forms an outer surface material together with the exterior body of the main body 11, and a lower plate 27 that closes the bottom of the upper plate 24. The lid body 23 includes an inner lid 60 that is detachably attached to the heater cover 30. The inner lid 60 is provided with a pressure regulating valve (pressure regulating unit) 68 and a relief valve (pressure regulating unit) 95 shown in FIG. 5A as valve structures for opening / closing the exhaust passage or adjusting the opening degree. . The exhaust passage includes the inside of the pressure regulating valve 68 and the relief valve 95 attached to the inner lid 60, the gap between these and the accommodating portions 32 and 36 described later, the gap between the inner lid main body 61 and the heater cover 30, and the later described. It is comprised by the path | route which passed through the inside of the steam port unit 26 to do.

  The upper plate 24 is provided with an operation member 25 for opening the lid 23 at the front portion thereof. The operation member 25 is biased upward by a kick spring (not shown). Further, a steam port unit 26 constituting an outlet of the exhaust passage is detachably disposed on the back portion of the upper plate 24.

  As shown in FIG. 3, the lower plate 27 has a shape corresponding to the concave depression shape on the upper side of the shoulder body 14. On the back portion of the lower plate 27, a hinge connection portion 28 is provided that is pivotally attached to a hinge receiving portion of the shoulder body 14 so as to be rotatable by a shaft. Further, a connected portion 29 for detachably connecting the steam port unit 26 is provided on the back portion of the lower plate 27 so as to be positioned below the steam port unit 26. Further, a lid heater (not shown) is disposed on the bottom of the lower plate 27 via a metal heater cover 30.

  A lid lock member 31 that maintains the lid 23 in a closed state with respect to the main body 11 is rotatably attached to the front portion of the lower plate 27. The lid lock member 31 is urged to the engagement position shown in FIG. 1 by a kick spring (not shown) and detachably engages with the engagement receiving portion 16 of the shoulder body 14. The lid lock member 31 is disengaged from the engagement receiving portion 16 when the operation member 25 is pushed in.

  Further, as shown in FIGS. 1 and 3, the lower plate 27 is provided with a pressure regulating valve accommodating portion 32 that accommodates a pressure regulating valve 68 disposed in the inner lid 60. The pressure regulating valve housing portion 32 has a cylindrical shape with upper and lower ends opened. A pressure regulating valve packing 33 is disposed at the upper end opening, and the pressure regulating valve housing 32 seals between the heater cover 30 at the lower end opening. A seal member 34 is provided. As shown in FIG. 3, a relief valve housing portion 36 for housing the relief valve 95 is provided on the side (left side) of the pressure regulating valve housing portion 32. The relief valve accommodating portion 36 has a dome shape with a lower end opening. A driving opening 37 is provided at the front portion of the side wall, and the driving opening 37 is closed by a relief valve packing 38. In addition, a relief valve seal member (not shown) that seals the space between the relief cover housing 36 and the heater cover 30 is disposed.

  The lower plate 27 is provided with a stepping motor 40 that is a driving means for the pressure regulating valve 68 on the back side of the pressure regulating valve housing portion 32. In addition, on the front side of the stepping motor 40, a pressing member 41 that transmits the driving force to the pressure regulating valve 68 is rotatably disposed. The pressing member 41 is configured to push down the pressure regulating valve 68 through a resin receiving member 42 disposed in the center of the pressure regulating valve packing 33.

  The lower plate 27 is provided with a solenoid 44 serving as a driving means for the relief valve 95 on the front side of the relief valve housing portion 36. The solenoid 44 includes a rod (not shown) that advances and retreats depending on whether or not power is supplied. The solenoid 44 is provided with a pressing member 45 that presses a spherical member 106 of a later-described relief valve 95 located in the relief valve housing portion 36 via a relief valve packing 38.

  Further, the lower plate 27 is provided with a lid temperature sensor (not shown). A cylindrical communication portion 47 that protrudes toward the inner lid 60 is provided on the front side of the pressure regulating valve housing portion 32 of the lower plate 27. The communication portion 47 is provided with a differential pressure type pressure sensor 46 that detects the pressure in the inner pot 10. The pressure sensor 46 has a closed space (not shown) for detecting pressure inside, and has a port 52 communicating with the closed space on the outside. The port 52 of the pressure sensor 46 is disposed inside the communication portion 47. A pressure sensor sealing member 48 is disposed between the port 52 and a pressure sensor through hole 66 of the inner lid 60 described later. The closed space of the pressure sensor 46 communicates with the inside of the inner pot 10 through the pressure sensor through hole 66 of the inner lid 60.

  As shown in FIG. 16, the pressure sensor sealing member 48 is formed so as to be continuous with one end of the connection portion 49 and to be widened toward the end portion. And a divergent portion 50. The divergent portion 50 of the pressure sensor seal member 48 is made of an elastic body that can be elastically deformed. The end spreading part 50 is deformed when the internal pressure of the inner pot 10 becomes an abnormal pressure. The end of the divergent portion 50 surrounds the pressure sensor through hole 66. The pressure sensor 46 connected to the pressure sensor seal member 48 via the connection portion 49 constitutes a cylindrical portion 51. The end portion of the end spreading portion 50 is in pressure contact with the inner lid 60. The outer peripheral surface of the divergent portion 50 is disposed inside the exhaust passage.

  The inner lid 60 includes a metal inner lid body 61 and a lid packing 62. As shown in FIG. 4, the inner lid body 61 includes a pressure regulating valve through hole (first through hole) 63, a relief valve through hole (first through hole) 64, and a negative pressure prevention valve through hole (second A through hole) 65 and a pressure sensor through hole 66 are provided. The pressure regulating valve through-hole 63, the relief valve through-hole 64, and the negative pressure prevention valve through-hole 65 communicate with the exhaust passage. The lid packing 62 is tightly sealed to the inner peripheral wall of the upper end opening of the inner pot 10, and is disposed on the inner lid body 61 so as not to be detached by disposing a resin frame 67 on the outer peripheral portion. Yes. As shown in FIG. 5A, the inner lid body 61 of the inner lid 60 is arranged in a pressure regulating valve 68 and a relief valve accommodating portion 36 arranged in the pressure regulating valve accommodating portion 32 of the lower plate 27. The relief valve 95 and the filter set 110 are integrally provided.

  The pressure regulating valve 68 includes a valve seat 69, a valve structure 70, and a pressure regulating valve vent 73.

  The valve seat 69 is inserted into the pressure regulating valve through hole 63 of the inner lid body 61 from the inner pot 10 side. The valve seat 69 includes an insertion portion 71 and a flange portion 72 formed at the end of the insertion portion 71.

  The insertion portion 71 is formed in a cylindrical shape, and a pressure regulating valve air hole 73 serving as a part of the exhaust passage (first inlet) is formed at the center thereof. That is, the pressure regulating valve vent 73 communicates the inside of the inner pot 10 and the valve structure 70. The insertion portion 71 is provided with a locking claw 77 that locks in a locking groove 91 of a cover 75 of the valve structure 70 described later. A concave groove 79 for disposing the seal member 78 is provided on the outer peripheral portion of the insertion portion 71 on the flange portion 72 side.

  The flange portion 72 is formed so that the outer diameter is larger than the pressure regulating valve insertion hole 123 of the filter base portion 120 described later.

  The valve structure 70 includes a valve body 82, a pressurizing biasing mechanism, an opening biasing member 80, and a cover 75. The valve body 82 opens and closes the pressure regulating valve vent 73. The pressurizing biasing mechanism includes an operation receiving member 87 and a pressurizing biasing member 85 and biases the valve body 82 downward. The opening biasing member 80 biases the valve body 82 upward. The cover 75 surrounds the valve body 82 and is mounted with a pressurizing biasing mechanism and an opening biasing member 80 inside. A locking groove 91 that locks the locking claw 77 of the valve seat 69 is provided in the lower portion of the cover 75.

  The pressure regulating valve 68 configured in this manner equilibrates the inside of the inner pot 10 with the atmospheric pressure via the pressure regulating valve air hole 73 when the valve body 82 is moved to the open position by driving the stepping motor 40. That is, the pressure regulating valve vent 73 has an opening area that can be exhausted so that the internal pressure of the inner pot 10 is equal to the atmospheric pressure. Moreover, it is possible to pressurize the inside pot 10 to 1.30 atm by driving the stepping motor 40. Incidentally, the pressure that can be pressurized by the pressure regulating valve 68 is adjusted to 1.00 to 1.30 atm by adjusting the amount of movement for moving the operation receiving member 87 downward via the pressing member 41 by driving the stepping motor 40. It can be changed within the range.

  The relief valve 95 includes a valve seat 96, a valve structure 97, and a relief valve vent 101.

  The valve seat 96 is inserted into the relief valve through hole 64 of the inner lid body 61 from the inner pot 10 side. The valve seat 96 includes an insertion portion 98 and a flange portion 99 formed at the end of the insertion portion 98.

  The insertion portion 98 has a trapezoidal cylindrical shape with the upper end closed, and passes through the relief valve through hole 64 of the inner lid body 61. In the insertion portion 98, a relief valve vent 101 serving as a part of the exhaust passage (second inlet) is formed in the center of the flat upper end blocking surface. The relief valve vent 101 communicates the inside of the inner pot 10 with the valve structure 97. The relief valve vent 101 has an opening area that can be exhausted so that the inner pot 10 is in a boiling state and the inner pressure of the inner pot 10 is equal to the atmospheric pressure. The insertion portion 98 is provided with a locking groove 102 for locking a locking claw 103 of a cover 100 of a valve structure 97 described later. A concave groove 105 for arranging the seal member 104 is provided on the outer peripheral portion of the insertion portion 98 on the flange portion 99 side.

  The flange part 99 is formed so that the outer diameter is larger than the relief valve insertion hole 124 of the filter base part 120 described later.

  The valve structure 97 includes a spherical member 106 and a cover 100. When the pressing member 45 is advanced by driving the solenoid 44, the inside of the inner pot 10 and the outside are shut off, and the inside of the inner pot 10 can be pressurized to a pressure higher than the atmospheric pressure.

  The spherical member 106 closes the relief valve vent hole 101 to prevent the air in the inner pot 10 from being exhausted to the outside so that the inside of the inner pot 10 can be pressurized. Further, when the pressure member 45 is pressed away from the relief valve vent hole 101, the internal pressure of the inner pot 10 is returned to atmospheric pressure (equilibrium). The spherical member 106 is of a weight that rolls away from the relief valve vent 101 by the steam pressure when the pressure in the inner pot 10 is increased to 1.30 atm.

  The cover 100 is detachably attached to the inner lid body 61 via the valve seat 96 by assembling the locking claw 103 in the locking groove 102 of the insertion portion 98 with the spherical member 106 accommodated. It is. The cover 100 is provided with a hole (not shown) through which the pressing member 45 of the solenoid 44 can be advanced and retracted on the rear side of the relief valve packing 38 of the relief valve accommodating portion 36.

  The filter set 110 is disposed so as to surround the inlet of the exhaust passage, that is, the pressure regulating valve vent 73 of the pressure regulating valve 68 and the relief valve vent 101 of the relief valve 95, and the pressure regulating valve vent from the inner pot 10. 73 and the entry of the food into the relief valve vent 101. As shown in FIG. 4, the filter set 110 includes a filter base part 120, a filter part 150, a spring (biasing member) 111, and a lock part 180. A negative pressure prevention valve (container) 113 and a reflux valve 117 are attached to the filter set 110.

  As shown in FIG. 4 and FIG. 6A, the filter base 120 is a thin plate and is formed to have a substantially rectangular outer shape. The filter base portion 120 includes a contact portion 121 that contacts the inner lid body 61 and a mounting portion 122 that is located on the opposite side of the contact portion 121.

  The attachment portion 122 is provided with a pressure regulating valve insertion hole 123, a relief valve insertion hole 124, a filter base side sound generation space forming portion 125, a negative pressure prevention valve accommodation hole (valve element accommodation portion) 126, and a lock member attachment portion 127. It has been.

  The pressure regulating valve insertion hole 123 is provided below the pressure regulating valve through hole 63 of the inner lid 60. The pressure regulating valve insertion hole 123 has a shape that substantially matches the outer periphery of the insertion portion 71 of the pressure regulating valve 68. An inner flange portion 128 is provided on the inner periphery of the pressure regulating valve insertion hole 123 on the contact portion 121 side. The insertion portion 71 of the pressure regulating valve 68 is inserted into the pressure regulating valve insertion hole 123, and the flange portion 72 and the inner flange portion 128 come into contact with each other.

  The relief valve insertion hole 124 is provided below the relief valve through hole 64 of the inner lid 60 on the left side of the pressure regulation valve insertion hole 123. The relief valve insertion hole 124 has a shape that substantially matches the outer periphery of the insertion portion 98 of the relief valve 95. An inner flange portion 129 is provided on the inner periphery of the relief valve insertion hole 124 on the contact portion 121 side. Through the relief valve insertion hole 124, the insertion portion 98 of the relief valve 95 is inserted, and the flange portion 99 and the inner flange portion 129 come into contact with each other.

  The filter base side sound generation space forming portion 125 is provided below the pressure sensor through hole 66 on the front side of the pressure regulating valve through hole 63. The filter base side sound generation space forming portion 125 is provided below the circular concave portion 130, the annular convex portion 131 protruding in a direction substantially orthogonal from the opening edge of the concave portion 130, and the pressure sensor through hole 66 of the inner lid 60. Outflow holes 132 are provided. The concave portion 130 forms a sound generation space by the concave portion 158 of the filter side sound generation space forming portion 157 of the filter portion 150.

  The negative pressure prevention valve accommodation hole 126 accommodates the elastic portion 114 of the negative pressure prevention valve 113. The negative pressure prevention valve accommodation hole 126 has a larger opening surface than the negative pressure prevention valve through hole 65 of the inner lid 60. A through-hole 65 for a negative pressure prevention valve of the inner lid 60 is disposed on the opening surface. As shown in FIG. 6A, a fixed portion 133 is provided in the contact portion 121 on the rear side of the negative pressure prevention valve accommodation hole 126. The fixing portion 133 is a recess that houses the retaining portion 112 of the negative pressure prevention valve 113.

  The lock member mounting portion 127 is provided between the filter base side sound generation space forming portion 125 and the negative pressure prevention valve accommodating hole 126, and is formed with an upper portion protruding so as to form a space on the contact portion 121 side. ing. The depth of the space is substantially the same as the height of the stopper portion 182 of the lock member 181. The space is large enough to accommodate the stopper portion 182 of the lock member 181 shown in FIGS. A positioning portion 135 is provided on the front wall 134 that forms the space. The positioning part 135 is a protrusion and positions one end of a spring (not shown) of the lock part 180. As shown in FIG. 6, a recess 147 is provided in the rear wall 139 that forms the space.

  A guide portion 136 is provided in the abutting portion 121 on the front side of the lock member mounting portion 127. The guide portion 136 is provided with two grooves 137 and 137 across the entire front-rear direction with an interval in the left-right direction. The depth of the groove 137 is the same as the height of the guided portion 183 of the lock member 181 shown in FIGS. A guide rail 138 is formed between the groove 137 and the groove 137. The guide rail 138 is located at the center in the left-right direction.

  A support portion 140 is provided at the rear portion of the filter base portion 120 so as to form a pair on both the left and right sides. As shown in FIGS. 2, 4, 6 (a), 14 (a), and (b), an inner lid 60 is provided on the rear side of the surface where one support portion 140 faces the other support portion 140. A convex portion 140a that engages with the convex portion 152a of the filter portion 150 that is open so as to abut is provided. The convex portion 140a bulges toward the opposing support portion 140 side toward the inner lid 60 side. The support portions 140 and 140 are provided with a large diameter portion 141 that accommodates shaft portions 163 and 163 of the filter portion 150 described later. A small diameter portion 142 is provided outside the large diameter portion 141 in the axial direction. The small diameter part 142 accommodates the remaining part of the spring 111 with a part inserted into the filter part 150. The shaft portion 163 of the filter portion 150 is rotatably supported by the large diameter portion 141 and the inner lid 60.

  As shown in FIGS. 4 and 7, the filter unit 150 is a thin plate, has a substantially rectangular outer shape, and is formed in substantially the same shape as the filter base 120. The filter unit 150 includes a cover unit 151 and a connecting unit 152.

  The cover portion 151 includes a plurality of recesses 153 that are partitioned from each other so as to have independent rooms on the attachment portion 122 side of the filter base portion 120. The plurality of recesses 153 are provided in each of a region covering both the pressure regulating valve insertion hole 123 and the relief valve insertion hole 124, a region covering the negative pressure prevention valve accommodation hole 126, and a region accommodating the lock member mounting portion 127. It has been. The peripheral edge of each recess 153 abuts on the attachment portion 122 of the filter base 120.

  A recirculation valve fixing portion 154 and a recirculation hole 155 are provided in the recess 153 of the cover portion 151 located between the pressure regulating valve insertion hole 123 and the relief valve insertion hole 124. The reflux valve fixing part 154 is a through hole through which the insertion part 119 of the reflux valve 117 is inserted. The reflux hole 155 circulates the “rice ball” that has entered between the filter part 150 and the filter base part 120 into the inner pot 10. On the bottom surface of the recess 153 in the area covering both the pressure regulating valve insertion hole 123 and the relief valve insertion hole 124 and the area covering the negative pressure prevention valve accommodation hole 126, the cooked product (for example, amaranthus of cereals) A plurality of filter holes 156 that do not allow the passage of) are provided. The diameter of the filter hole 156 is 1.5 mm, but may be 1.5 mm or less. The filter hole 156 communicates the inside of the inner pot 10 and the exhaust passage via a pressure regulating valve 68, a relief valve 95, and a negative pressure prevention valve 113.

  The cover portion 151 is provided with a filter side sounding space forming portion 157 so as to be positioned below the filter base side sounding space forming portion 125 of the filter base portion 120. The filter-side sounding space forming unit 157 includes a circular recess 158. A plurality of guide portions 159 projecting toward the center of the circle are provided at intervals on the inner peripheral surface of the recess 158. An inflow hole 160 is provided on the bottom surface of the recess 158. The inflow hole 160 is coaxially arranged with the same diameter as the outflow hole 132 of the filter base side sound generation space forming part 125. The filter side sounding space forming unit 157 is fitted to the filter base side sounding space forming unit 125 via a plurality of guide parts 159.

  A hook portion 161 that is engaged with a lock member 181 connected to the filter base portion 120 is provided on the front surface of the filter portion 150. As shown in FIG. 7A, a reflux valve mounting portion 162 is provided in a region including the reflux valve fixing portion 154 and the reflux hole 155 on the surface of the cover portion 151 opposite to the filter base portion 120. Yes. The connecting portion 152 is a width accommodated between the support portions 140 and 140, has a thickness substantially the same as the diameter of the shaft portion 163, and is formed to extend rearward from the cover portion 151. The shaft portion 163 is provided on the rear side of the connecting portion 152. The shaft portion 163 is formed in a cylindrical shape so as to protrude outward in the left-right direction. As shown in FIGS. 4 and 7B, a housing space for the spring 111 is formed inside the shaft portion 163, and a spring mounting shaft 164 is provided in the housing space. As shown in FIGS. 2, 7, and 12, the filter base portion 120 protrudes in the inner lid 10 side region of the connecting portion 152 adjacent to the front side of the shaft portion 163 in an open state so as to contact the inner lid 60. A convex portion 152a that engages with the portion 140a is provided. The convex part 152a and the convex part 140a of the filter base part 120 constitute an engaging part that keeps the filter part 150 open.

  As shown in FIGS. 4 and 16, the connecting portion 152 is provided with a dew receiving portion 167 so as to be positioned below the inner lid 60 with the lid 23 opened. The dew receiving portion 167 is not easily heated by the filter set 110 located farther from the inner lid 60 than the lid heater (not shown), and the temperature of the dew receiving portion 167 is lower than that of the inner lid 60. It captures the condensation that is likely to occur. The cross-sectional shape of the dew receiving part 167 is a part of a circular arc that curves downward from the lower side of the filter base part 120 toward the upper side opposite to the filter base part 120 with the lid 23 opened. Is formed. Backflow prevention portions 168 are provided at both ends of the arc of the dew receiving portion 167. The backflow preventing portion 168 protrudes inside the arc and is formed in the entire connecting portion 152 in the left-right direction. The dew receiving portion 167 has a housing portion 169 formed by the arc portion and the backflow preventing portion 168.

  With the lid 23 opened, a guide part 171 is provided above the dew receiving part 167 and spaced from the upper end part 170 of the dew receiving part 167. The cross-sectional shape of the guide portion 171 is formed so as to extend almost straight from the lower side of the filter base portion 120 toward the upper side opposite to the filter base portion 120. With the lid 23 opened, the lower end 172 of the guide portion 171 is positioned above between the one backflow prevention portion 168 and the other backflow prevention portion 168. Between the guide part 171 and the upper end part 170, an intake hole 173 is formed which communicates the space adjacent to the inner pot 10 side of the filter part 150 and the accommodating part 169 of the dew receiving part 167. On the outer peripheral edge of the filter portion 150, a water collection guide portion 174 that protrudes toward the inner pot 10 is provided.

  The spring 111 is a kick spring, and one end is locked to the filter base portion 120 and the other end is locked to the filter portion 150. The spring 111 biases the filter unit 150 in the closing direction with respect to the filter base unit 120.

  The support part 140 of the filter base part 120, the connecting part 152 of the filter part 150, and the spring 111 constitute a hinge connection part 177. The filter set 110 includes the hinge connection portion 177, the lock portion 180, and the engagement portion, so that the filter portion 150 is in a closed position where the filter portion 150 is in contact with the filter base portion 120 and an open position where the filter base portion 120 is not in contact with the filter base portion 120. It can be opened and closed to be either one.

  FIGS. 8A to 8D show a lock member 181 that is attached to the filter base portion 120 and engages with the hook portion 161 of the filter portion 150. The lock member 181 is formed in a plate shape. The lock member 181 includes a stopper portion 182, a guided portion 183, and a locking portion 184.

  The stopper portion 182 has substantially the same thickness as the depth of the lock member mounting portion 127 and is thicker than the thickness of the guided portion 183. The stopper part 182 is adjacent to the guided part 183. The stopper part 182 is provided with a drop-off prevention part 185 so as to protrude on the opposite side to the guided part 183. The drop-off prevention part 185 has a size that can be accommodated in the recess 147 of the filter base part 120. The drop-off prevention part 185 is inserted into the recess 147 of the filter base part 120 when the lock member 181 is assembled to the filter base part 120 and prevents the lock member 181 from dropping from the filter base part 120. The length of the stopper portion 182 in the front-rear direction is shorter than the length of the lock member mounting portion 127, and the position where the stopper portion 182 contacts the rear wall 139 of the lock member mounting portion 127 and the position where the stopper portion 182 contacts the front wall 134. The locking portion 184 is disengaged from the hook portion 161 of the filter portion 150 by the movement in between.

  The length of the guided portion 183 in the thickness direction is slightly shorter than the length of the groove 137 of the filter base portion 120 in the depth direction.

  The locking portion 184 is adjacent to the guided portion 183 on the opposite side to the stopper portion 182. The locking portion 184 stands upright so that the end portion is positioned higher than the stopper portion 182. The engaging portion 184 is provided with an engaging protrusion 186 that protrudes in a direction orthogonal to the guided portion 183 side at the upright upper end portion. The lower end of the engagement protrusion 186 is substantially the same height as the upper end of the hook part 161 of the filter part 150.

  A through hole 187 is provided on the surface of the locking member 181 facing the engaging protrusion 186 from the stopper 182 spaced apart from the drop-off preventing portion 185 to the end of the locking portion 184 on the guided portion 183 side. . A positioning portion 188 that faces the positioning portion 135 of the filter base portion 120 is provided on the wall surface of the through-hole 187 on the drop-off prevention portion 185 side. The positioning part 188 is a protrusion and positions one end of a spring (not shown) of the lock part 180. The surface of the lock member 181 opposite to the surface facing the engaging protrusion 186 is a flat surface.

  As shown in FIG. 9, the negative pressure prevention valve 113 includes an elastic part 114, a sandwiched part 115, and a retaining part 112. The elastic part 114 is made of a rectangular elastically deformable rubber. As shown in FIG. 10, the elastic portion 114 is accommodated in the negative pressure prevention valve accommodation hole 126 of the filter base portion 120 so as to close the negative pressure prevention valve through hole 65 of the inner lid 60. The elastic part 114 includes a positioning part 116 at a position inside the negative pressure prevention valve accommodation hole 126 of the filter base part 120. The positioning portion 116 is formed in a protruding shape, and is inserted into the negative pressure prevention valve through hole 65 of the inner lid 60. The sandwiched portion 115 is adjacent to the elastic portion 114 so as to extend parallel to the extending direction of the elastic portion 114. The sandwiched portion 115 is a portion that is sandwiched between the inner lid 60 and the filter set 110. A retaining portion 112 extending in a direction orthogonal to the extending direction of the elastic portion 114 is provided at the end of the sandwiched portion 115 opposite to the elastic portion 114. That is, the side surface of the negative pressure prevention valve 113 is formed in an L shape. The retaining portion 112 is accommodated in the fixing portion 133 of the filter base portion 120.

  As shown in FIGS. 11A to 11C, the recirculation valve 117 is made of a rectangular elastically deformable rubber and includes a locking portion 118 and an insertion portion 119. The locking portion 118 is disposed so as to be biased to one side of the longitudinal direction of the reflux valve 117. The locking portion 118 is formed so as to protrude through an insertion portion 119 having a length substantially the same as the depth of the reflux valve fixing portion 154 of the filter portion 150. The size of the cross section of the insertion portion 119 is smaller than the reflux valve fixing portion 154 of the filter portion 150. The cross section of the locking portion 118 is larger than the reflux valve fixing portion 154 of the filter portion 150. The side surface of the reflux valve 117 is substantially L-shaped. As shown in FIG. 2, the reflux valve 117 is attached to the reflux valve attachment portion 162 of the filter portion 150.

  As illustrated in FIG. 12, the filter unit 150 of the filter set 110 is provided with an interference unit 190. The interference part 190 is a part (hatched part) of the filter part 150 located outside the inner lid 60 in a state where the filter set 110 is opened and the filter part 150 is in contact with the inner lid 60. When the lid body 23 is closed with the filter set 110 opened, the interference unit 190 of the filter unit 150 interferes with the main body 11.

  Further, as shown in FIG. 3, the lid body 23 has a lid state detection unit 189 that detects an engagement state between the lid lock member 31 and the engagement receiving portion 16 of the main body 11 and detects an open / closed state of the lid body 23. Is provided.

  In this rice cooker, an operation panel 201 having a switch for a user to input rice cooking conditions and a liquid crystal display panel for displaying a selection state and an operation state is disposed on the upper front portion of the shoulder body 14. Yes. A control board (not shown) on which a microcomputer (not shown) is mounted is disposed between the exterior body and the protective frame 18. When this microcomputer (not shown) detects the operation of the rice cooking switch disposed on the operation panel 201, based on the rice cooking conditions set by the liquid crystal display board, the rice is preheated and heated (medium patch) according to the rice cooking program. ), Boiling maintenance, two-time cooking, and rice cooking processing comprising each step of Murashi, then, a heat-retaining treatment is performed to keep the cooked cooked rice at a predetermined temperature.

  The attachment of the filter set 110 of the pressure cooker according to the present invention will be described.

  The locking portion 118 of the reflux valve 117 is elastically deformed and inserted into the reflux valve fixing portion 154 of the filter portion 150. Then, the locking portion 118 of the reflux valve 117 is made to pass through the reflux valve fixing portion 154. In this way, the reflux valve 117 is attached to the reflux valve attachment portion 162 of the filter portion 150.

  The guide rail 138 is inserted into the through hole 187 of the lock member 181 so that the engaging protrusion 186 of the locking portion 184 is on the lower side. Thereafter, the drop-off prevention portion 185 is inserted into the recess 147 of the lock member mounting portion 127. In this state, the lock member 180 is inserted into the lock member mounting portion 127 so that one end of a spring (not shown) inserts the positioning portion 135 of the filter base 120 and the other end inserts the positioning portion 188 of the lock member 181. Is attached to the filter base 120.

  The negative pressure prevention valve 113 is configured such that the retaining portion 112 is accommodated in the fixing portion 133 of the filter base portion 120 and the elastic portion 114 is accommodated in the negative pressure prevention valve accommodation hole 126. Place on the side.

  A part of the spring 111 is inserted into the shaft portion 163 of the filter unit 150. Then, the shaft portions 163 and 163 of the filter portion 150 are fitted into the large diameter portions 141 and 141 of the filter base portion 120, respectively, and the remaining part of the spring 111 is locked to the filter base portion 120. Thus, the filter base part 120 and the filter part 150 can be connected. The filter set 110 is left open (the filter unit 150 is not in contact with the filter base unit 120).

  As shown in FIG. 13A, the pressure regulating valve insertion hole 123 on the contact portion 121 side of the filter base 120 is aligned with the pressure regulating valve through hole 63 of the inner lid 60, and the relief valve through hole 64 is relieved. The valve insertion hole 124 is made to coincide with the insertion portion 71 of the valve seat 69 and the insertion portion 98 of the valve seat 96 from the inner pot 10 side, respectively, and the pressure regulating valve insertion hole 123 and the relief valve insertion hole 124 of the filter base portion 120, respectively. To be inserted. Then, the contact portion 121 of the filter base 120 is brought into contact with the inner lid 60, the flange portion 72 of the valve seat 69 is brought into contact with the inner flange portion 128 of the pressure regulating valve insertion hole 123, and the flange portion of the valve seat 96. 99 is brought into contact with the inner flange portion 129 of the relief valve insertion hole 124. The valve structure 70 (cover 75) and the valve structure 97 (cover 100) are arranged on the exhaust passage side of the inner lid 60.

  As shown in FIG. 13B, the valve structure 70 is locked to the valve seat 69 from the exhaust passage side, and the spherical member 106 is disposed on the relief valve vent 101 from the exhaust passage side. The valve seat 96 is locked. At that time, the locking claw 77 of the valve structure 70 is locked in the locking groove 91 of the valve seat 69, and the locking claw 103 of the valve structure 97 is locked in the locking groove 102 of the valve seat 96.

  In this way, the insertion portions 71 and 98 of the valve seats 69 and 96 inserted through the insertion holes 123 and 124 of the filter base portion 120 and the first through holes 63 and 64 of the inner lid 60 in this order from the inner pot 10 side, The filter base portion 120 is sandwiched between the inner lid 60 and the flange portions 72 and 99 of the valve seats 69 and 96 of the pressure adjusting portion by engaging with the valve structures 70 and 97 disposed on the exhaust passage side of the 60. Thus, the filter set 110 can be detachably mounted on the inner lid 60. With the inner lid 60 and the filter base portion 120 sandwiching the clamped portion 115 of the negative pressure prevention valve 113, the elastic portion 114 is accommodated in the state where the elastic portion 114 is accommodated in the negative pressure prevention valve accommodation hole 126 of the filter base portion 120. The negative pressure prevention valve through-hole 65 of the lid 60 can be closed. Accordingly, since it is not necessary to screw the filter set 110 and the negative pressure prevention valve 113 to the inner lid 60, it is possible to avoid pressure leaking through the screw hole. Moreover, since the number of parts is not increased, an increase in cost can be suppressed.

  By disposing the filter set 110 at the inlet of the exhaust passage, the cooked product cannot pass through the filter hole 156 of the filter unit 150, so the cooked product can be passed from the inner pot 10 to the vent holes 73 and 101 of the pressure adjusting units 68 and 95. It is possible to prevent the air holes 73 and 101 from being blocked. Thereby, since an exhaust passage does not become a blockade state, it can prevent reliably that the internal pressure of the inner pot 10 during pressure cooking becomes abnormal pressure. Moreover, since the filter set 110 is detachably attached to the inner lid 60 and the user can be prevented from misusing the filter set 110 without being attached to the inner lid 60, the internal pressure of the inner pan 10 can be prevented. Can be reliably prevented from becoming an abnormal pressure.

  On the other hand, when the cooked product squirts inside the inner pot 10 during cooking, “oneba” passes through the filter hole 156. Then, as shown in FIG. 14 (a), when the “needle” moves to the reflux hole 155 inside the filter set 110, as shown in FIG. The lower reflux valve 117 is bent to open the reflux hole 155. As a result, the “mother” that has passed through the filter hole 156 can be refluxed from the reflux hole 155 to the inner pot 10 through the filter set 110. Therefore, before the “rice ball” moves to the air holes 73 and 101 and is closed, it can be refluxed from the reflux hole 155 to the inner pot 10.

  After use, the inner lid 60 is removed from the lid body 23, the lock member 181 of the lock portion 180 of the filter set 110 is pulled out against the biasing force of a spring (not shown), and the filter portion 150 is opened. The convex part 152a of 150 moves from the position shown in FIG. 15A to the position shown in FIG. 15B, and the convex part 152a of the filter part 150 and the convex part 140a of the filter base part 120 are engaged. Then, the filter unit 150 can be temporarily fixed to the filter base unit 120. In this way, the filter unit 150 is maintained in an open state. The filter unit 150 can be maintained in an open state and can be rotated around the shaft part 163 of the hinge connection part 177, so that it is easy to clean, and the inside as well as the outside of the filter set 110 can be surely washed. Can do.

  Before use again, the filter set 110 is closed and the inner lid 60 is attached to the lid body 23. When the filter set 110 is not closed, as shown in FIG. 12, the filter unit 150 protrudes outside the inner lid 60 in a state in which the filter unit 150 faces in a substantially opposite direction with respect to the filter base unit 120. Therefore, when the lid 23 is to be closed in this state, the interference portion 190 interferes with the inner lid 60, whereby the engagement portion of the filter set 110 is released. Thereafter, the filter unit 150 is automatically closed by the biasing force of the spring 111. Thereby, it can prevent reliably that rice cooking is started accidentally in the state which has not closed the filter set 110 by the user.

  The filter set 110 is located at a position farther from the inner lid 60 than the inner lid 60 with respect to the lid heater (not shown), and thus is less heated than the inner lid 60. Therefore, condensation tends to occur on the surface of the filter unit 150 on the inner pot 10 side, and water droplets adhere. In this state, when the lid body 23 is opened in order to take out the cooked food in the inner pot 10, as shown by the arrow in FIG. 16, water drops flow down along the surface of the filter unit 150 on the inner pot 10 side. At that time, water droplets adhering to the filter unit 150 can be reliably guided to the dew receiving unit 167 without flowing out from the outer peripheral edge by the water collecting guide unit 174, and flow into the storage unit 169 from the intake hole 173 and stored. can do. That is, when the lid 23 is opened, the water droplets adhering to the inner lid 60 travel along the inner lid 60 and are received in the dew receiving portion 167 below the inner lid 60, so that they fall on the food in the inner pot 10. Can be prevented.

  Moreover, since the backflow prevention part 168 is provided in the storage part 169, when the cover body 23 is closed, it can prevent that the water droplet accommodated in the dew receiving part 167 flows backward and flows out from the dew receiving part 167. .

  If both the pressure regulating valve 68 and the relief valve 95 are closed and then the temperature of the inner pot 10 is lowered, the pressure inside the inner pot 10 becomes lower than the pressure outside the inner lid 60, so the lid body 23. May not open. However, since the negative pressure prevention valve through-hole 65 is provided in the inner lid 60 and the elastic part 114 of the negative pressure prevention valve 113 is disposed in the negative pressure prevention valve accommodation hole 126 of the filter base part 120, 10, the elastic portion 114 of the negative pressure prevention valve 113 is moved to the inner pot 10 side due to a pressure difference between the exhaust passage side of the inner lid 60 and the inner pot 10 side, as shown by a two-dot chain line in FIG. 10. Elastically deforms. Then, air flows in the direction of the arrow through the opened negative pressure prevention valve through-hole 65, so that the pressure inside the inner pot 10 and the pressure outside the inner lid 60 are equalized. Thereby, it can avoid that the cover body 23 does not open.

  Further, when both the pressure regulating valve 68 and the relief valve 95 are closed, after the high pressure (1.5 atm) steam fills the cylindrical portion 51, the pressure is applied to the divergent portion 50, whereby the divergent portion 50 is elastic. Deform. As a result, a gap 202 is formed between the divergent portion 50 and the inner lid 60 so that the state shown in FIG. 17A changes to the state shown in FIG. Then, the gas flows out from the gap 202 to the exhaust passage through the outflow hole 132 and the cylindrical portion 51. When this high-pressure steam passes through the inflow hole 160 and the outflow hole 132, a sound is emitted. Thereby, it is possible to notify the user of a state where both the pressure regulating valve 68 and the relief valve 95 are closed with a simple configuration.

  The elastic part 114 of the negative pressure prevention valve 113 does not enter the through hole 65 for the negative pressure prevention valve when pressure is applied from the inner pot 10 side to the exhaust passage side during pressure cooking. Since it contacts with the inner lid 60 and closes the through hole 65 for the negative pressure prevention valve, it is possible to prevent pressure leakage from the inner pot 10 to the exhaust passage.

  The present invention is not limited to the embodiment, and various modifications are possible.

  The filter set 110 may be provided separately for each of the pressure regulating valve 68 and the relief valve 95. In this way, since the filter set 110 becomes small, it is possible to avoid blocking the radiant heat of the inner lid 60.

  The filter base part 120 and the filter part 150 of the filter set 110 may be opened and closed by sliding, as shown in FIG. Further, as shown in FIG. 18 (b), it may be opened and closed by rotation about an axis.

  As shown in FIG. 19, a filter set 110 that is opened so that the filter unit 150 intersects the filter base unit 120 is provided, and when the lid 23 is closed with the filter set 110 opened, the inner pot 10 in the main body 11 is closed. An interference unit 190 that interferes with the inner surface may be provided in the filter unit 150.

  A dew receiving portion 167 may be provided on the inner lid 60 so as to be positioned below the inner lid 60 with the lid body 23 opened.

  The biasing member 111 may be biased in the opening direction. In this case, the filter unit 150 is not automatically closed, but the interference unit 190 can function.

DESCRIPTION OF SYMBOLS 10 Inner pan 11 Main body 23 Lid body 60 Inner lid 63 Pressure regulation valve through-hole (1st through-hole)
64 Relief valve through hole (first through hole)
65 Through hole for negative pressure prevention valve (second through hole)
68 Pressure regulator (pressure regulator)
69,96 Valve seat 70,97 Valve structure 71,98 Insertion part 72 Flange part 73 Pressure regulating valve vent 95 Relief valve (pressure regulating part)
99 Flange 101 Relief valve vent 110 Filter set 111 Spring (biasing member)
113 Negative pressure prevention valve (container)
114 Elastic part 115 Clamped part 120 Filter base part 123 Pressure regulating valve insertion hole 124 Relief valve insertion hole 126 Negative pressure prevention valve accommodation hole (valve element accommodation part)
150 Filter part 156 Filter hole 167 Dew receiving part 168 Backflow prevention part 174 Water collecting guide part 177 Hinge connection part 190 Interference part

Claims (9)

A main body that houses the inner pot of the upper end opening;
A lid body rotatably attached to the main body and having an exhaust passage communicating the inside and outside of the inner pot;
An inner lid that is detachably provided on the lid, closes an upper end opening of the inner pot, and has a first through hole connected to the exhaust passage;
A valve structure provided on the inner lid and disposed on the exhaust passage side of the first through-hole to open / close or adjust the opening of the exhaust passage; and the inner pan in the first through-hole of the inner lid An insertion portion that is inserted from the side and engages with the valve structure; a valve seat that includes a flange portion larger than the first through hole of the inner lid; A pressure adjusting unit having pores;
A filter base portion provided on the inner pot side of the inner lid so as to surround the vent hole of the pressure adjusting portion, and an insertion hole through which the insertion portion of the valve seat is inserted; and the filter A filter set having a filter portion that is attached to a base portion so as to be openable and closable, and that communicates the inside of the inner pot and the exhaust passage and has a filter hole that does not allow the food to pass through.
When the insertion portion of the valve seat is locked to the valve structure, the filter base portion is sandwiched between the inner lid and the flange portion of the valve seat so that the filter set cannot be removed from the inner lid. A pressure cooker that is mounted. A hinge connecting part for connecting the filter base part and the filter part;
The pressure cooker according to claim 1, further comprising: an interference unit that is provided in the filter unit and interferes with the main body when the lid is closed in a state where the filter unit is open. A biasing member that biases the filter portion in a closing direction;
The pressure cooker according to claim 1, further comprising an engaging portion that maintains the filter portion in an open state.   The pressure cooker according to any one of claims 1 to 3, wherein a dew receiving portion is provided on the inner lid so as to be positioned below the inner lid with the lid open. .   The pressure cooker according to claim 4, wherein the dew receiving portion is provided in the filter set connected to the inner lid.   The pressure cooker according to claim 4 or 5, wherein a backflow prevention part is provided in the dew receiving part.   The pressure cooker according to any one of claims 4 to 6, wherein a water collection guide portion is provided on an outer peripheral edge of the filter portion. A second through hole provided in the inner lid and communicating with the exhaust passage;
A valve body housing portion provided in the filter base portion, communicating with the second through hole and having a larger surface than the second through hole;
An elastically deformable elastic part that is accommodated in the valve body accommodating part and closes the second through-hole, and an object to be accommodated having a sandwiched part adjacent to the elastic part,
The pressure cooker according to any one of claims 1 to 7, wherein a sandwiched portion of the container is sandwiched between the inner lid and the filter base portion.   The pressure cooker according to any one of claims 1 to 8, wherein the pressure regulating unit includes both a pressure regulating valve and a relief valve.

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