Pressure cooker float valve locking device for prolonging preservation time of food at normal temperature and pressure cooker

Abstract

The utility model discloses a pressure cooker float valve locking device for prolonging the preservation time of food at normal temperature and a pressure cooker, and belongs to the technical field of pressure cookers. An existing pressure cooker cannot guarantee that food in the pressure cooker cannot deteriorate after being stored for a long time at normal temperature, and the reason is that although the temperature in the pressure cooker is up to more than 120 DEG C during high-pressure cooking, all bacteria and bacterial spores in the pressure cooker are killed, but after the pressure cooker stops high-pressure cooking, the bacteria and bacterial spores cannot deteriorate along with the reduction of the air pressure in the pressure cooker. The float valve on the pot cover can automatically fall, at the moment, various bacteria and molds outside the pot can enter the pot through the ventilation hole channel of the float valve, and a large amount of bacteria and molds can be rapidly propagated in cooked food in the pot. The float valve which floats upwards on the pot cover is locked through the float valve locking device; after the pressure cooker stops heating and the air pressure in the cooker is reduced, the sealing state in the cooker is continuously kept, so that bacteria and molds outside the cooker are prevented from entering the cooker through the ventilation hole channel of the float-controlled valve, and the preservation time of food in the pressure cooker at normal temperature is prolonged.

Description

Technical Field

[0001] This invention relates to the field of pressure cooker technology, and in particular to a pressure cooker float valve locking device and pressure cooker for extending the shelf life of food at room temperature. Background Technology

[0002] Pressure cookers are incredibly practical appliances, essential in every household's kitchen and a necessity in many industries. However, there's always one limitation to their use: you can't preserve food in a pressure cooker at room temperature for extended periods without spoiling. For example, on a hot day, you might want to braise some edamame or peanuts the night before, then stop braising, let them soak overnight to fully absorb the flavor, and enjoy them the next day. The reason is that these edamame or peanuts in their shells have already gone bad by the next day, and the bacteria and bacterial toxins have seriously exceeded the standard (even if refrigerated, they cannot be eaten directly after 6 hours). The reason is that although the temperature inside the pressure cooker reaches more than 120 degrees Celsius during high-pressure cooking, killing all bacteria and bacterial spores inside the pot, after the pressure cooker stops high-pressure cooking, as the pressure inside the pot decreases, the float valve on the lid will automatically fall down (the float valve is also called a check valve, and its functions are: first, to allow air to pass through without increasing pressure when the lid is not closed properly; second, to prevent the lid from being opened accidentally under high pressure; and third, to seal the pot during high-pressure cooking). After the float valve falls down automatically, the vent of the float valve reopens to the outside, so various bacteria and molds in the outside air enter the pot with the outside air and multiply in large numbers. Moreover, the cooked food in the pot becomes the best culture medium for various bacteria and molds, making them multiply even faster.

[0003] Although another application with application number 2012100919394 discloses a preservation technology for pressure cookers, this technology uses an electromagnet to attract a float valve (with iron). The electromagnet works continuously for a long time, which consumes a lot of electricity. If AC power is used, it is not only unsuitable for ordinary energy pressure cookers that do not require electricity, but also extremely inconvenient to operate and use. If batteries (including rechargeable batteries) are used, the batteries need to be changed every day or the batteries will not last long enough to preserve the food. Summary of the Invention

[0004] Purpose of the invention: To enable pressure cookers to extend the shelf life of food at room temperature.

[0005] Technical solution:

[0006] 1. A pressure cooker float valve locking device for extending the storage time of food at room temperature, characterized in that it comprises: a float valve and a locking device, wherein the float valve is installed on the lid of the pressure cooker and can move up and down within the float valve channel of the lid, and the locking device is fixedly connected or movably connected to the lid.

[0007] (1). The float valve includes: "float valve with tray" (the tray is fixed to the upper part of the float valve) or "float valve without tray", wherein locking fittings are fixed on the tray of the "float valve with tray" and at the upper end of the "float valve without tray";

[0008] The locking device includes either a "locking device with a through hole on the bracket" or a "locking device with a screw hole on the bracket"—the "locking device with a through hole on the bracket" comprises a bracket with a through hole, a push rod, an elastic element, and a locking fitting fixedly placed at the bottom or lower part of the push rod. The bracket is fixedly connected to the lid of the pressure cooker above the float valve. The push rod is vertically installed in the through hole of the bracket and can move up and down within the through hole. The elastic element is sleeved on the rod body of the push rod and is placed between the upper end of the through hole and the finger handle of the push rod. The "locking device with a screw hole on the bracket" comprises a bracket with a screw hole, a screw vertically screwed into the screw hole, and a locking fitting fixedly placed at the bottom of the screw. The bracket with a screw hole is fixedly connected to the lid of the pressure cooker above the float valve.

[0009] When the "float valve with tray" or "float valve without tray" floats up, the locking engagement on the "float valve with tray" or "float valve without tray" works together with the locking engagement on the bottom (lower part) of the push rod or the bottom of the screw to lock the float valve, so that the "float valve with tray" or "float valve without tray" does not fall down on its own;

[0010] (2). Or:

[0011] The float valve includes: a float valve with several through holes, the upper part of which is provided with several through holes, and each of the several through holes has a through hole of the same size at a mirror symmetrical position of the float valve.

[0012] The locking device includes a screw lifting type locking device, which consists of two screw holes symmetrically fixed on the pot lid with the float valve as the center, and two pointed screws respectively screwed into the two screw holes.

[0013] When the float valve floats up, simultaneously turn the two pointed screws so that the two pointed screws are respectively inserted into any two of the through holes in mirror-symmetrical positions, so that the float valve does not fall down on its own;

[0014] (3). Or:

[0015] The float valve includes: an extended float valve;

[0016] The locking device includes a clip-type locking device, which comprises an elastic clip or a magnetic clip, wherein the elastic clip or magnetic clip is movably connected to the pot lid via screws and a sliding groove;

[0017] After the extended float valve floats up, slide the elastic clip or magnetic clip toward the extended float valve and clamp the extended float valve;

[0018] 2. The "float valve with tray" mentioned in (1) above includes: a float valve with locking fitting A, which comprises: a float valve body, a tray fixed to the upper part of the float valve body, and locking fitting A fixed to the tray; the "locker with through hole on bracket" includes: a locker with locking fitting B, which comprises: a bracket with through hole, a push rod, an elastic element, and locking fitting B fixed to the bottom or lower part of the push rod.

[0019] When the float valve with locking engagement A floats up, push the push rod downward to make the locking engagement A and the locking engagement B detachably and fixedly connected, locking the float valve and preventing the float valve from falling down on its own.

[0020] 3. The float valve body described in section 2 above includes: a float valve body adapted to tray one, the tray including: tray one; the locking fitting A including: locking fitting a, i.e., a magnetic metal sheet, a permanent magnet sheet, or the rough surface or hook surface of hook and loop fasteners; the push rod including: push rod one; the locking fitting B including: locking fitting b, i.e., a permanent magnet sheet, a magnetic metal sheet, or the hook surface or rough surface of hook and loop fasteners.

[0021] The locking fitting a and the locking fitting b need to be paired when they are detachably fixedly connected.

[0022] 4. The float valve body described in section 2 above includes: a float valve body adapted to tray 2, the tray includes: tray 2, the locking mating part A includes: a male buckle or a female buckle, the push rod includes: push rod 2, and the locking mating part B includes: a female buckle that mates with the aforementioned male buckle or a male buckle that mates with the aforementioned female buckle;

[0023] 5. A pressure cooker, comprising: a lid, wherein the lid is equipped with the aforementioned pressure cooker float valve locking device for extending the storage time of food at room temperature.

[0024] Beneficial effects: Due to the locking device of the float valve of the pressure cooker, the float valve will not fall down on its own after the pressure inside the pot drops, thus preventing bacteria and mold in the outside air from entering the pot through the vent of the float valve. This can extend the storage time of food in the pot at room temperature. Attached Figure Description

[0025] Figure 1 These are exploded views of the push rod in the first and fourth embodiments; Figure 2 Schematic diagrams of the brackets with through holes in the first, second, and fourth embodiments; Figure 3 Exploded views of the float valve and tray in the first and third embodiments; Figure 4 This is a schematic diagram of the installation of the float valve and locking device on the pressure cooker lid in the first embodiment. Figure 5 These are schematic diagrams of the brackets with screw holes in the third and fifth embodiments; Figure 6 This is a schematic diagram of the shape of the screw with a columnar permanent magnet core or a magnetic metal screw in the third and fifth embodiments; Figure 7 This is an exploded view of the push rod in the second embodiment; Figure 8 This is an exploded view of the float valve and tray in the second embodiment; Figure 9 Exploded views of the float valve and magnetic metal sheet in the fourth and fifth embodiments; Figure 10 This is a schematic diagram of the installation of the float valve and locking device on the pressure cooker lid in the sixth embodiment. Figure 11 This is a schematic diagram of the installation of the float valve and locking device on the pressure cooker lid in the seventh embodiment.

[0026] Figure 1 In the middle: 1-Push rod one, 10-Screw, 11-Finger handle, 12-Rod body; Figure 2 In the middle: 2-bracket with through hole, 20-through hole, 21-screw through hole; Figure 3 In the middle: 30-Plate 1, 301-Plate front, 302-Cylindrical protrusion, 31-Float valve adapted to tray 1, 311-Upper end of float valve, 312-Small through hole, 313-Hollow weight reduction hole, 314-External vent hole before float valve floats up, 315-Sealing ring that seals after float valve floats up; Figure 4 In the middle: 40 - compression spring, 41 - fixing screw; Figure 5 In the middle: 5-bracket with screw hole, 50-screw hole, 51-screw through hole; Figure 6 6- A screw with a columnar permanent magnet core; 61- A columnar permanent magnet core; Figure 7 In the middle: 7-Push rod two, 70-Screw, 71-Finger handle, 72-Rod body, 720-"L" hook; Figure 8 In the middle: 80-Plate 2, 801-Cone, 802-Cylindrical protrusion, 81-Float valve adapted to tray 2; Figure 9 In the middle: 90 - magnetic metal strip, 91 - float valve adapted to magnetic metal strip; Figure 10 In the middle: 100-pointed screw, 101-float valve with several through holes, 102-screw hole, 103-through hole; Figure 11In the middle: 111-Extended float valve, 112-Elastic clip, 113-Screw, 1121-Head of clip, 1122-Slide groove. Detailed Implementation

[0027] First Implementation Method

[0028] like Figure 3 A circular magnetic metal sheet, a circular permanent magnet sheet, a circular hook and loop fastener, or a circular hook and loop fastener is fixed in the center of the front side (301) of the tray—collectively referred to as locking fitting a. The tray (30) is then fixed to the float valve (31) that is compatible with the tray. The fixing method is as follows: four cylindrical protrusions, such as cylindrical protrusions (302), which are evenly distributed on the tray, are inserted into four small through holes, such as small through holes (312), which are also evenly distributed on the upper part of the float valve. The diameter of the cylindrical protrusions is the same as the diameter of the small through holes. The outer end of the tray does not extend beyond the four small through holes; to eliminate the possible influence of the weight of the tray on the upward movement of the float valve: 1. The tray is made of lightweight material, such as food-grade plastic; 2. The thickness of the locking fitting a fixed on the front of the tray is as thin as possible; 3. The float valve is provided with several evenly distributed hollow weight-reducing holes (or weight-reducing grooves), such as hollow weight-reducing holes (313); 4. The weight of the float valve is reduced by thinning the wall thickness; The magnetic metal sheet is a metal sheet that can be attracted by a magnet, and the preferred material of the magnetic metal sheet is iron;

[0029] The assembly consisting of the float valve and the tray (belonging to the category of "float valve with tray") is installed in the mounting hole of the float valve on the pressure cooker lid.

[0030] The above-mentioned "float valve with tray" comprises: a float valve (31) body adapted to tray one, tray one (30) fixed on the upper part of the body, and a locking fitting a fixed on tray one;

[0031] Figure 1 The diameter of the bottom of the push rod (1) is greater than Figure 2The diameter of the through hole (20) on the middle bracket (2) is larger than the diameter of the push rod body (12). A circular permanent magnet or a circular magnetic metal piece or a circular hook or loop fastener is fixed in the center of the bottom of the push rod - collectively referred to as locking fitting b. The push rod body is then passed through the through hole of the bracket from bottom to top. The bracket is then fixed to the pressure cooker lid by screws or adhesives, so that the bottom of the push rod faces the front of the tray (301). A compression spring is placed on the push rod body (the diameter of the compression spring is larger than the diameter of the through hole of the bracket). The handle (11) is then fixed to the rod body (12) by screws (10). The preferred material of the magnetic metal piece is iron. The compression spring can also be replaced by an elastic sponge column with a hollow center. The compression spring and the elastic sponge column are collectively referred to as elastic components.

[0032] The push rod (1), compression spring (40), bracket (2) with through hole and locking fitting b fixed at the center of the bottom of the push rod constitute the locker of this embodiment (belonging to "locker with through hole on bracket").

[0033] Figure 4 This is a schematic diagram of the installation of the float valve and the locking device on the pressure cooker lid in this embodiment. When the pressure cooker starts cooking, the float valve (31) of the adapter tray rises, and the push rod (1) has not yet been pushed down, there is a gap between the uppermost end of the locking fitting a and the lowermost end of the locking fitting b.

[0034] Furthermore: the circular magnetic metal sheet or circular permanent magnet sheet is treated with rust prevention; since the area of ​​the front of the tray is very small, when using Velcro, it is best to choose a dense and fine Velcro.

[0035] Instructions for use: If you need to preserve the food in the pressure cooker at room temperature for a long time, push the handle (11) on the push rod downwards at any time after the pressure cooker starts cooking and the float valve (31) of the first adapter tray floats up, until the pressure cooker stops heating and the float valve falls down automatically. This will cause the locking engagement a and the locking engagement b to be detachably fixedly connected. At this time, the rebound force generated by the compression spring (40) will push the push rod (1) upwards, thereby lifting the float valve (31) of the first adapter tray upwards, so that the float valve (31) of the first adapter tray will no longer fall down on its own, thus maintaining the seal of the pressure cooker. When you want to open the lid, lift the push rod (1) upwards to separate the detachable fixed connection. The float valve (31) of the first adapter tray will fall down automatically, and you can open the lid.

[0036] Pairing Instructions: When locking parts a and b are detachably fixed, they need to be paired. The pairing method is as follows: when a circular magnetic metal piece is fixed to the center of the front of the tray, a circular permanent magnet piece is fixed to the center of the bottom of the push rod; when a circular permanent magnet piece is fixed to the center of the front of the tray, a circular magnetic metal piece or a circular permanent magnet piece is fixed to the center of the bottom of the push rod; when a circular hook and loop fastener is fixed to the center of the front of the tray, a circular hook and loop fastener is fixed to the center of the bottom of the rod; when a circular hook and loop fastener is fixed to the center of the front of the tray, a circular hook and loop fastener is fixed to the center of the bottom of the rod.

[0037] Second Implementation Method

[0038] like Figure 8 As shown, the fixed connection method between tray 2 (80) and float valve (81) adapted to tray 2 is similar to that in the first embodiment. The specific connection method in this embodiment (i.e., the second embodiment) is as follows: insert the four cylindrical protrusions on the tray, such as the cylindrical protrusion (802), into the four small through holes on the horizontal plane where the upper dotted line of the float valve is located (the upper cavity of the float valve has a very small space and can be installed with tweezers).

[0039] The cone (801) on the aforementioned tray is a male snap fastener (the tray and the cone are integrally injection molded).

[0040] The assembly consisting of the float valve and the tray (belonging to the category of "float valve with tray") is installed in the mounting hole of the float valve on the pressure cooker lid.

[0041] The aforementioned "float valve with tray" comprises: a float valve (81) body adapted to tray 2, tray 2 (80) fixed on the upper part of the body, and a locking fitting fixed on tray 2;

[0042] like Figure 7 As shown, the following installation and connection method is similar to the first embodiment. The specific installation and connection method in this embodiment (i.e., the second embodiment) is as follows: the push rod (72) is passed through the through hole (20) on the bracket (2) with the through hole from bottom to top, and the push rod can move freely up and down in the through hole of the bracket. Then, the bracket is fixed to the pot lid by means of screws or glue, so that the push rod is facing the cone (801). A compression spring is put on the push rod (the diameter of the compression spring is larger than the diameter of the through hole of the bracket). Then, the finger handle (71) is fixed to the rod (72) by screws (70). The compression spring can also be replaced by an elastic sponge column with a hollow center. The compression spring and the elastic sponge column are collectively referred to as elastic elements.

[0043] The push rod has two symmetrically designed "L"-shaped hooks at the bottom, such as the "L"-shaped hook (720) which is the female buckle of the buckle (which cooperates with the male buckle) (the push rod body and the female buckle are injection molded as one piece) - of course, the female buckle can also be designed on the tray, and the male buckle that cooperates with the female buckle can also be designed at the bottom of the push rod, but this is not the preferred embodiment;

[0044] Push rod 2 (7), compression spring, bracket with through hole (2) and the like constitute the lock in this embodiment (belonging to "locker with through hole on bracket");

[0045] When the pressure cooker starts cooking, the float valve (81) of the adapter tray 2 floats up, and the push rod 2 (7) has not yet been pushed down, the male buckle on the tray and the female buckle at the bottom of the push rod are not engaged together;

[0046] Instructions for use: If you need to preserve the food in the pressure cooker at room temperature for a long time, push the handle (71) downwards at any time after the pressure cooker starts cooking and the float valve rises, until the pressure cooker stops heating and the float valve falls automatically. This will cause the female buckle to slide downwards along the tip of the cone (801) on the second tray (80) until the female buckle is stuck on both sides of the bottom of the male buckle (cone). At this time, the rebound force generated by the compression spring will push the push rod (7) upwards, thereby lifting the float valve (81) that is adapted to the second tray upwards, so that the float valve (81) that is adapted to the second tray will no longer fall down on its own, thus maintaining the seal of the pressure cooker. When you want to open the lid, lift the push rod (7) upwards, so that the two "L"-shaped hooks slide off the edge of the bottom of the cone, and the float valve (81) that is adapted to the second tray will fall down automatically, and you can open the lid.

[0047] Third Implementation Method

[0048] In this embodiment, the connection method between the float valve (31) of the adapter tray and the tray (30) is the same as in the first embodiment, but only a circular magnetic metal sheet or a circular permanent magnet sheet is fixed in the center of the front side (301) of the tray.

[0049] The assembly formed by connecting the float valve and the tray (belonging to "float valve with tray") is installed in the mounting hole of the float valve on the pressure cooker lid.

[0050] The locking device in this embodiment is a "locking device with screw holes on the bracket". It consists of a bracket (5) with screw holes and a screw (6) with a columnar permanent magnet core or a magnetic metal screw. The screw with columnar permanent magnet core is made by injection molding a layer of plastic threads around the columnar permanent magnet core (61). The magnetic metal screw and the screw with columnar permanent magnet core have the same shape. The bracket with screw holes is fixed to the pressure cooker lid by screws or glue. The screw (6) with columnar permanent magnet core or the magnetic metal screw is screwed into the screw hole (50) of the bracket. At this time, the bottom of the screw with columnar permanent magnet core or the magnetic metal screw faces the front of the tray (301).

[0051] Instructions for use: If you need to preserve the food in the pressure cooker at room temperature for a long time, after the float valve (31) of the first adapter tray floats up, turn down the screw or magnetic metal screw with columnar permanent magnet core so that the gap between the upper end of the circular magnetic metal sheet or circular permanent magnet sheet and the lower end of the screw or magnetic metal screw with columnar permanent magnet core is close to zero but does not make direct contact (the smaller the gap, the greater the magnetic force of mutual attraction). The float valve (31) of the first adapter tray is lifted up by magnetic force (without air). When you want to open the lid, turn up the screw or magnetic metal screw with columnar permanent magnet core until the float valve (31) of the first adapter tray falls down automatically to open the lid.

[0052] Pairing instructions: When the circular magnetic metal sheet or circular permanent magnet sheet attracts the bottom of the screw with columnar permanent magnet core or magnetic metal screw without direct contact, they need to be paired. The pairing method is as follows: when the screw with columnar permanent magnet core is screwed into the screw hole (50), the circular magnetic metal sheet or circular permanent magnet sheet is fixed in the center of the front side (301) of the tray; when the magnetic metal screw is screwed into the screw hole (50), the circular permanent magnet sheet is fixed in the center of the front side (301) of the tray.

[0053] Fourth Implementation Method

[0054] This embodiment uses a "float valve without a tray," that is, a float valve (91) adapted to a magnetic metal sheet. A locking fitting C, that is, a magnetic metal sheet (90) or a permanent magnet sheet, is fixedly connected to the upper end of the float valve (91) adapted to the magnetic metal sheet. The method of fixing the connection is as follows: Figure 9 As shown, first apply high-temperature resistant and environmentally friendly adhesive to one side of the magnetic metal sheet or permanent magnet sheet, and then attach it to the upper end face of the float valve (91) that is compatible with the magnetic metal sheet; the magnetic metal sheet or permanent magnet sheet must be rust-proofed.

[0055] The assembly consisting of a magnetic metal sheet (90) or a permanent magnet sheet and a float valve (91) adapted to the magnetic metal sheet is installed in the mounting hole of the float valve on the pressure cooker lid.

[0056] The push rod (1), compression spring, bracket (2) with through hole and locking fitting D (i.e. permanent magnet or magnetic metal) fixed in the center of the bottom of the push rod constitute the "locker with locking fitting D" in this embodiment (belonging to "locker with through hole on bracket"), and its installation method is the same as that in the first embodiment.

[0057] Usage method: Same as the first implementation method;

[0058] Pairing instructions: When the float valve (91) with the magnetic metal sheet is floated, the locking mating part C and the locking mating part D need to be paired. The pairing method is as follows: when the upper end of the float valve (91) with the magnetic metal sheet is fixed with a magnetic metal sheet (90), the center of the bottom of the push rod (1) is fixed with a permanent magnet; when the upper end of the float valve (91) with the magnetic metal sheet is fixed with a permanent magnet, the center of the bottom of the push rod (1) is fixed with a magnetic metal or a permanent magnet.

[0059] Fifth Implementation Method

[0060] This embodiment also uses a "float valve without a tray", that is, a float valve (91) adapted to a magnetic metal sheet. A magnetic metal sheet (90) or a permanent magnet sheet is fixedly connected to the upper end of the float valve (91) adapted to the magnetic metal sheet. The fixed connection method is the same as in the fourth embodiment.

[0061] The locking device in this embodiment is the same as the "locking device with screw holes on the bracket" in the third embodiment, and its structure and installation method are also the same as those in the third embodiment.

[0062] Instructions for use: If you need to preserve the food in the pressure cooker at room temperature for a long time, after the float valve (91) with the magnetic metal plate floats up, turn down the screw (6) with the columnar permanent magnet core or the magnetic metal screw on the locking device. This will make the gap between the upper end of the magnetic metal plate (90) or permanent magnet fixed at the upper end of the float valve (91) with the magnetic metal plate float (91) and the lower end of the screw with the columnar permanent magnet core or the magnetic metal screw close to zero but not in direct contact (the smaller the gap, the greater the magnetic force of attraction). The float valve (91) with the magnetic metal plate floats up by magnetic force (without air). When you want to open the lid, turn the screw with the columnar permanent magnet core or the magnetic metal screw up until the float valve (91) with the magnetic metal plate floats down automatically to open the lid.

[0063] Pairing instructions: When the magnetic metal sheet or permanent magnet sheet attracts the bottom of the screw with columnar permanent magnet core or magnetic metal screw in a non-direct contact manner, they need to be paired. The pairing method is as follows: when the screw hole of the upper bracket of the locker is screwed into the screw (6) with columnar permanent magnet core, the upper end of the float valve (91) that is adapted to the magnetic metal sheet is fixed with the magnetic metal sheet (90) or permanent magnet sheet; when the screw hole of the upper bracket of the locker is screwed into the magnetic metal screw, the upper end of the float valve (91) that is adapted to the magnetic metal sheet is fixed with the permanent magnet sheet.

[0064] Sixth Implementation Method

[0065] like Figure 10 In this embodiment, a float valve with several through holes is used, namely a float valve (101) with several through holes. The float valve (101) with several through holes has several through holes, such as through holes (103). Each of the several through holes has a through hole at a mirror-symmetrical position on the float valve. The locking device in this embodiment is a screw lifting type locking device, which includes: two screw holes, such as screw holes (102), symmetrically placed on both sides of the float valve with the float valve as the center, and two pointed screws, such as pointed screws (100) - the two pointed screws are respectively screwed into the two screw holes.

[0066] When the float valve (101) with several through holes floats up, simultaneously turn the two pointed screws so that the two pointed tips are inserted into any two through holes in mirror-symmetrical positions. As the two pointed screws are further turned in synchronously, the float valve (101) with several through holes will be slightly lifted up. When the gas pressure inside the pot drops, the float valve will not fall down on its own. When opening the lid, turn the pointed screws in the opposite direction until both pointed tips are removed from the through holes on the float valve.

[0067] Seventh Implementation Method

[0068] like Figure 11 In this embodiment, the float valve is an extended float valve, namely float valve (111).

[0069] The locking device in this embodiment is a clip-on locking device, which includes a spring clip (112) or a magnetic clip. The clip-on locking device is movably connected to the lid of the pressure cooker through a screw (113) and a sliding groove (1122). The spring clip generates clamping force through elasticity, and the magnetic clip generates clamping force through magnetism.

[0070] When the float valve (111) floats up, slide the clamp lock towards the float valve (111) and clamp the float valve (111) with the head of the clamp (1121) to achieve the purpose of preventing the float valve (111) from falling down by itself when the gas pressure in the pot drops.

Claims

1. A pressure cooker float valve locking device for extending the shelf life of food at room temperature, characterized in that, include: A float valve and a locking device are provided. The float valve is installed on the lid of the pressure cooker and can move up and down within the float valve channel of the lid. The locking device is fixedly or movably connected to the lid. (1). The float valve includes: "float valve without tray" or "float valve with tray", wherein the tray is fixed to the upper part of the float valve, and locking fittings are fixed on the tray of the "float valve with tray" and at the upper end of the "float valve without tray"; The locking device includes: "a locking device with a through hole on the bracket" or "a locking device with a screw hole on the bracket" - the "locking device with a through hole on the bracket" is composed of a bracket (2) with a through hole, a push rod, an elastic element, and a locking fitting fixedly placed at the bottom or lower part of the push rod. The bracket is fixedly connected to the lid of the pressure cooker above the float valve. The push rod is vertically installed in the through hole of the bracket and can move up and down in the through hole. The elastic element is sleeved on the rod body of the push rod and is placed between the upper end of the through hole and the finger handle of the push rod. The "locking device with a screw hole on the bracket" is composed of a bracket (5) with a screw hole, a screw rod vertically screwed into the screw hole, and a locking fitting fixed at the bottom of the screw rod. The bracket (5) with a screw hole is fixedly connected to the lid of the pressure cooker above the float valve. When the "float valve with tray" or "float valve without tray" floats up, the locking engagement on the "float valve with tray" or "float valve without tray" works together with the locking engagement on the bottom of the push rod or the bottom of the screw to lock the float valve, so that the "float valve with tray" or "float valve without tray" does not fall down on its own. (2). Or: The float valve includes: a float valve (101) with several through holes, the upper part of which is provided with several through holes, and each of the several through holes has a through hole of the same size at a mirror symmetrical position of the float valve (101) with several through holes. The locking device includes: a screw lifting type locking device, which consists of two screw holes symmetrically fixed on the pot lid with the float valve (101) with several through holes as the center, and two pointed screws respectively screwed into the two screw holes. When the float valve (101) with several through holes floats up, the two pointed screws are turned at the same time so that the two pointed screws are inserted into any two of the through holes in mirror symmetrical positions, so that the float valve (101) with several through holes does not fall down on its own. (3). Or: The float valve includes: an extended float valve (111); The locking device includes a clip-on locking device, which comprises an elastic clip (112) or a magnetic clip, wherein the elastic clip or magnetic clip is movably connected to the pot lid by a screw (113) and a groove (1122); When the extended float valve (111) floats up, slide the elastic clip or magnetic clip toward the extended float valve (111) and clamp the extended float valve (111).

2. The pressure cooker float valve locking device for extending the storage time of food at room temperature according to claim 1, characterized in that: The "float valve with tray" includes: a float valve with locking engagement A, comprising: a float valve body, a tray fixed to the upper part of the float valve body, and locking engagement A fixed to the tray; The "locker with through hole on bracket" includes: a locker with locking fitting B, which consists of: a bracket (2) with through hole, a push rod, an elastic element and locking fitting B fixedly placed at the bottom or lower part of the push rod; When the float valve with locking fitting A floats up, push the push rod downward to make locking fitting A and locking fitting B detachably and fixedly connected, locking the float valve and preventing the float valve from falling down on its own.

3. A pressure cooker float valve locking device for extending the storage time of food at room temperature according to claim 2, characterized in that: The float valve body includes: a float valve (31) body adapted to tray one, the tray includes: tray one (30), the locking fitting A includes: locking fitting a, namely, the rough surface of a magnetic metal sheet or a permanent magnet sheet or a hook surface of a Velcro; The push rod includes: push rod one (1), and the locking fitting part B includes: locking fitting part b, namely, a permanent magnet sheet or a magnetic metal sheet or a hook surface of Velcro or a rough surface of Velcro; The locking mating part a and the locking mating part b need to be paired when they are detachably fixed.

4. A pressure cooker float valve locking device for extending the storage time of food at room temperature according to claim 2, characterized in that: The float valve body includes: a float valve (81) body adapted to tray two, the tray includes: tray two (80), and the locking mating part A includes: a male buckle or a female buckle; The push rod includes: push rod two (7), and the locking fitting B includes: a female buckle that cooperates with the above-mentioned male buckle or a male buckle that cooperates with the above-mentioned female buckle.

5. A pressure cooker float valve locking device for extending the storage time of food at room temperature according to claim 1, characterized in that: The "float valve with tray" includes: a float valve (31) adapted to tray one, on which a magnetic metal sheet or a permanent magnet sheet is fixed; The "locker with screw holes on the bracket" is composed of a bracket (5) with screw holes and a screw (6) with a columnar permanent magnet core or a magnetic metal screw. When the float valve (31) of the adapter tray 1 floats up, the screw with the columnar permanent magnet core or the magnetic metal screw is turned downwards, so that the magnetic metal sheet or permanent magnet sheet attracts the bottom of the screw that is turned downwards. The magnetic metal sheet or permanent magnet sheet needs to be paired when it attracts the bottom of the screw that is turned downwards.

6. A pressure cooker float valve locking device for extending the storage time of food at room temperature according to claim 1, characterized in that: The "float valve without tray" includes: a float valve (91) adapted to a magnetic metal sheet, and a locking fitting C, i.e. a magnetic metal sheet or a permanent magnet sheet, is fixed at the upper end of the float valve (91) adapted to the magnetic metal sheet. The "locker with through hole on bracket" includes: a locker with locking fitting D, which consists of a bracket (2) with through hole, a push rod (1), an elastic element and a locking fitting D fixed to the bottom of the push rod, wherein the locking fitting D is a permanent magnet or magnetic metal; When the float valve (91) of the magnetic metal sheet floats up, push the push rod (1) downward to make the locking mating part C and the locking mating part D magnetically connected. The locking mating part C and the locking mating part D need to be paired when they are magnetically connected.

7. A pressure cooker float valve locking device for extending the storage time of food at room temperature according to claim 1, characterized in that: The "float valve without tray" includes: a float valve (91) adapted to a magnetic metal sheet, wherein a magnetic metal sheet or a permanent magnet sheet is fixed at the upper end of the float valve (91) adapted to the magnetic metal sheet; The "locker with screw holes on the bracket" is composed of a bracket (5) with screw holes and a screw (6) with a columnar permanent magnet core or a magnetic metal screw. When the float valve (91) of the adapted magnetic metal sheet floats up, the screw with the columnar permanent magnet core or the magnetic metal screw is turned downwards, so that the magnetic metal sheet or the permanent magnet sheet attracts the bottom of the screw that is turned downwards. The magnetic metal sheet or the permanent magnet sheet needs to be paired when it attracts the bottom of the screw that is turned downwards.

8. A pressure cooker float valve locking device for extending the storage time of food at room temperature according to claim 3, 5, 6, or 7, characterized in that, The magnetic metal is made of iron.

9. A pressure cooker float valve locking device for extending the storage time of food at room temperature according to any one of claims 1 to 7, characterized in that, The float valve includes a float valve with hollowed-out weight-reducing holes or weight-reducing grooves.

10. A pressure cooker, characterized in that, The pressure cooker includes: a lid, wherein the lid has a pressure cooker float valve locking device as described in any one of claims 1 to 9 for extending the storage time of food at room temperature.

Images