Composite exhaust device and electric cooker

Abstract

The utility model discloses a composite exhaust device and an electric rice cooker, which belong to the technical field of electric rice cookers, the composite exhaust device comprises a pot cover, an exhaust hood and an air entraining shunt cover, two end faces of the pot cover are respectively provided with an exhaust port and an air inlet, the exhaust hood and the air entraining shunt cover are combined and arranged in the pot cover, the exhaust hood is in butt joint with the exhaust port, and the air entraining shunt cover is in butt joint with the air inlet. The air entraining and shunting cover comprises an air entraining opening, an air guide pipe, a water collecting tank and a water leakage opening, the air entraining opening is formed in the bottom of the air entraining and shunting cover, one end of the air guide pipe is connected with the air entraining opening, the other end of the air guide pipe extends upwards along the bottom surface of the air entraining and shunting cover, the water collecting tank is arranged around the air guide pipe, and the water leakage opening is formed in the bottom of the water collecting tank; part of the steam is discharged outwards after being reduced by the exhaust hood, and part of the steam is condensed into water drops and flows back into the pot after passing through the water collecting tank, so that the situation of direct radiation of high-temperature and high-pressure steam is avoided, food essence can be locked, and food taste leakage is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of electric rice cookers, in particular to a composite exhaust device and an electric rice cooker. Background Art

[0002] With the improvement of people's living standards, kitchen appliances such as rice cookers and pressure cookers have become popular in every household. Rice cookers steam rice by heating water. During the heating process, water will form water vapor. The water vapor in the rice cooker needs to be discharged after reaching a certain pressure to prevent risks caused by excessive pressure. Rice cookers usually install an exhaust valve on the lid of the rice cooker to discharge excess water vapor and relieve pressure in the cooker. The existing exhaust valve will cause boiling soup to be directly relieved from the exhaust valve when cooking. The high pressure of the sprayed steam can easily hurt people. The exhaust steam will also bring out the juice of the rice, resulting in bubbling and other undesirable phenomena. The juice will overflow from the lid and the table, losing a lot of rice fragrance and being unhygienic. In addition, the fixed exhaust valve is prone to sanitary dead corners, which makes it inconvenient to clean it when it needs to be cleaned, and the cleaning is not thorough, resulting in the breeding of bacteria. Now there is a need for an exhaust device that can prevent direct steam spray and fully preserve the taste of rice.

[0003] The existing patent with announcement number CN209610874U discloses an exhaust valve for an electric rice cooker, comprising a first connection part which is sealed with the inner cover of the electric rice cooker, a second connection part which is sealed with the liner cover of the electric rice cooker, a cavity connected with the exhaust port, a circulation chamber connected with the inner pot of the electric rice cooker, and a neck sleeve which divides the cavity into at least two connected spaces; a communication port is provided between the circulation chamber and the cavity, and the gas exhausted from the inner pot of the electric rice cooker flows through each space formed by the neck sleeve and the cavity from the communication port in sequence, and is then exhausted to the outside from the exhaust port. The exhaust valve directly exhausts gas to the outside, which is dangerous and cannot lock the taste of the rice. Utility Model Content

[0004] One of the purposes of the utility model is to provide a composite exhaust device, which solves the problem that the existing exhaust valve directly exhausts air, which is dangerous and cannot lock the taste of rice.

[0005] In order to achieve the above utility model purpose, the technical solution adopted by the utility model is as follows:

[0006] A composite exhaust device comprises a pot cover, an exhaust hood and an air intake diverter hood, wherein an exhaust port and an air inlet are respectively arranged on both end surfaces of the pot cover, the exhaust hood and the air intake diverter hood are combined and arranged in the pot cover, the exhaust hood is connected to the exhaust port, and the air intake diverter hood is connected to the air inlet, the air intake diverter hood comprises an air intake port, an air guide pipe, a water collecting tank and a water leakage port, the air intake port is arranged at the bottom of the air intake diverter hood, one end of the air guide pipe is connected to the air intake port, and the other end extends upward along the bottom surface of the air intake diverter hood, the water collecting tank is arranged around the air guide pipe, and the water leakage port is arranged at the bottom of the water collecting tank, after the steam in the pot passes through the air intake diverter hood, part of it passes through the exhaust hood minus sign and is discharged outward, and part of it condenses into water droplets and flows back into the pot after passing through the water collecting tank, thereby preventing the direct injection of high-temperature and high-pressure steam and locking the essence of food to reduce the leakage of food flavor.

[0007] Furthermore, the exhaust hood includes an air outlet, a diverter and a top plate, the air outlet is arranged on the top plate, the diverter is arranged on the top plate, and the diverter is arranged above the air duct for diverting steam.

[0008] Furthermore, the diversion portion includes a main baffle, a first sub-baffle and an air gathering chamber, the main baffle is arranged on the top plate, and the main baffle is directly opposite to the other end of the air guide tube, the main baffle is bent to one side to form the air gathering chamber, the two ends of the main baffle extend toward the side walls of the exhaust hood, the first sub-baffle is arranged on the inner wall of the exhaust hood, and the first sub-baffle and the end of the main baffle form an air flow channel, and the steam is decelerated and cooled after passing through the air flow channel.

[0009] Preferably, the diversion part also includes a second sub-baffle, which is arranged on the inner wall of the exhaust hood. The second sub-baffle is arranged on the other side of the main baffle away from the first sub-baffle, thereby extending the time for steam to pass through the diversion channel, increasing the resistance to steam flow, and improving the diversion effect.

[0010] More preferably, the gas collecting chamber is arranged above the water leakage port to facilitate the recovery of steam after condensation.

[0011] More preferably, the bottom of the water collection tank is configured to be funnel-shaped, and the water leakage port is configured at the lowest point of the water collection tank to facilitate the backflow of water droplets and prevent the water collection tank from being blocked after long-term use.

[0012] More preferably, it further comprises a first sealing ring, wherein the first sealing ring is arranged between the exhaust hood and the pot cover to improve the firmness of the installation of the exhaust hood.

[0013] More preferably, it further includes a second sealing ring, which is arranged between the exhaust hood and the bleed air diversion hood, so that the exhaust hood and the bleed air diversion hood are sealed to prevent steam leakage.

[0014] More preferably, the projections of the air guide pipe and the exhaust port onto the end surface of the pot cover are staggered to prevent splashing caused by direct injection of steam.

[0015] The utility model aims to provide an electric rice cooker, which solves the problem that the existing electric rice cookers cannot fully cook the nutrition and flavor of rice.

[0016] In order to achieve the above utility model purpose, the technical solution adopted by the utility model is as follows:

[0017] An electric rice cooker comprises the composite exhaust device, which reduces the risk of steam hurting people when cooking food.

[0018] The beneficial effects of the utility model are:

[0019] (1) The composite exhaust device is formed by combining an exhaust hood and an air intake diverter hood. The air intake diverter hood can introduce the steam in the rice cooker from the air intake port into the exhaust device. The steam is directly sprayed onto the inner wall of the air intake diverter hood through the air guide pipe, which prevents the steam from being directly sprayed outward, thereby reducing the steam spray energy and the danger. After the steam is blocked in the air intake diverter hood, part of the steam is cooled and condensed into water droplets. The water droplets gather in the water collection tank and flow back into the rice cooker through the water leakage port, thereby reducing the loss of food essence.

[0020] (2) A diversion part is provided on the exhaust hood of the composite exhaust device. The main baffle, the first auxiliary baffle and the second auxiliary baffle of the diversion part are combined to form an air flow channel, which reduces the impact force of direct steam injection and extends the moving distance of the steam, thereby achieving the effect of locking the essence of food. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 A cross-sectional structural diagram of the composite exhaust device provided by the utility model;

[0022] Figure 2 Axonometric measurement of the air bleed splitter hood provided by the utility model Figure 1 ;

[0023] Figure 3 Axonometric measurement of the air bleed splitter hood provided by the utility model Figure 2 ;

[0024] Figure 4 An axonometric view of the exhaust hood provided by the utility model.

[0025] Reference numerals:

[0026] 1. Pot cover; 11. Exhaust port; 12. Air inlet; 13. Sealing ring; 2. Exhaust hood; 21. Air outlet; 22. Diverter; 221. Main baffle; 222. First sub-baffle; 223. Air gathering chamber; 224. Second sub-baffle; 23. Top plate; 24. Hanging ear; 3. Air bleed diverter hood; 31. Air bleed port; 32. Air guide pipe; 33. Water collecting trough; 34. Water leakage port; 35. Convex ring; 4. First sealing ring; 5. Second sealing ring. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0028] Embodiment 1

[0029] like Figure 1-Figure 4 As shown, the present embodiment discloses a composite exhaust device, including a pot cover 1, an exhaust hood 2 and an air intake diversion hood 3. The two end surfaces of the pot cover 1 are respectively provided with an exhaust port 11 and an air inlet 12. The exhaust hood 2 and the air intake diversion hood 3 are combined and arranged in the pot cover 1, which is convenient for disassembly and cleaning. The exhaust hood 2 is connected to the exhaust port 11, and the air intake diversion hood 3 is connected to the air inlet 12. The air intake diversion hood 3 includes an air intake port 31, an air guide pipe 32, a water collection tank 33 and a water leakage port 34. The air intake port 31 is provided with It is placed at the bottom of the air ducting and diverting cover 3, one end of the air duct 32 is connected to the air ducting port 31, and the other end extends upward along the bottom surface of the air ducting and diverting cover 3, a water collecting tank 33 is arranged around the air duct 32, and a water leakage port 34 is arranged at the bottom of the water collecting tank 33. After the steam passes through the air duct 32, part of it is discharged outward through the exhaust port 11, and part of it condenses into water droplets and gathers in the water collecting tank 33, and then flows back into the pot through the water leakage port 34, which reduces the impact of direct discharge of steam and also reduces the leakage of food essence.

[0030] Preferably, a convex ring 35 is provided on the bottom surface of the air bleed diverter cover 3, and the convex ring 35 is arranged around the air bleed port 31 and the water leakage port 34. Water droplets passing through the water leakage port 34 can flow into the pot along the convex ring 35, which is convenient for cleaning.

[0031] Furthermore, the exhaust hood 2 includes an air outlet 21, a diverter 22 and a top plate 23. The air outlet 21 is arranged on the top plate 23, the diverter 22 is arranged on the top plate 23, and the diverter 22 is arranged above the air guide pipe 32 for guiding the steam to flow outward and guiding part of the condensed steam to converge downward.

[0032] Furthermore, the diversion portion 22 includes a main baffle 221, a first sub-baffle 222 and an air gathering chamber 223. The main baffle 221 is arranged on the top plate 23, and the main baffle 221 is opposite to the other end of the air guide pipe 32. The main baffle 221 is bent to one side to form the air gathering chamber 223. Both ends of the main baffle 221 extend toward the side walls of the exhaust hood 2. The first sub-baffle 222 is arranged on the inner wall of the exhaust hood 2, and the first sub-baffle 222 and the end of the main baffle 221 form an air flow channel for guiding the steam when it is discharged outward. The air flow channel increases the resistance and moving distance of the steam discharge, reduces the discharge pressure of the upper steam and increases the amount of steam recovery.

[0033] Among them, the cross-section of the main baffle 221 is set to be curved and extends in the height direction toward the air guide pipe 32, so that the air guide pipe 32 overlaps with the projection of the main baffle 221 onto the side wall of the exhaust hood 2, which can fully guide the steam into the air flow channel.

[0034] Preferably, the diversion portion 22 also includes a second sub-baffle 224, which is arranged on the inner wall of the exhaust hood 2, and the second sub-baffle 224 is arranged on the other side of the main baffle 221 away from the first sub-baffle 222. The second sub-baffle 224 extends the length of the airflow channel, increases the resistance of steam moving in the airflow channel, and improves the proportion of steam recovery.

[0035] Preferably, the gas gathering chamber 223 is arranged above the water leakage port 34, and the steam can directly return to the pot after condensation, which can effectively prevent the gas gathering chamber 223 from being blocked after long-term use.

[0036] More preferably, a plurality of hanging ears 24 are installed on the outer wall of the exhaust hood 2, and the hanging ears 24 are snap-fitted with the structure inside the pot cover 1, thereby improving the firmness of the exhaust hood 2 and facilitating the installation and positioning of the exhaust hood 2.

[0037] Preferably, the bottom of the water collecting tank 33 is configured to be funnel-shaped, and the water leakage port 34 is configured at the lowest point of the water collecting tank 33. The condensed water droplets flow toward the water leakage port 34 under the action of gravity, thereby improving the reflux efficiency and preventing the water collecting tank 33 from being blocked.

[0038] More preferably, it also includes a first sealing ring 4, which is arranged between the exhaust hood 2 and the pot cover 1. The first sealing ring 4 is made of flexible material. The top of the air guide tube 32 is recessed on one side to form a step structure. The air guide tube 32 is inserted into the exhaust port 11. The first sealing ring 4 is installed between the step structure and the upper end surface of the pot cover 1 to prevent steam leakage and fill the installation gap to prevent the composite exhaust device from shaking due to impact during operation.

[0039] More preferably, it also includes a second sealing ring 5, which is arranged between the exhaust hood 2 and the air entrainment diversion hood 3. The second sealing ring 5 is arranged between the lower edge of the exhaust hood 2 and the upper edge of the air entrainment diversion hood 3, so that the cavity formed by the combination of the two is closed to prevent steam from leaking into the pot cover 1.

[0040] Preferably, the projections of the air duct 32 and the exhaust port 11 to the end surface of the pot cover 1 are staggered so that the steam will not be directly discharged from the exhaust port 11, thereby increasing the flow distance of the steam and preventing the steam from being sprayed due to excessive kinetic energy and splashing to injure people.

[0041] More preferably, a sealing ring 13 is provided on the inner edge of the pot cover 1 to improve the sealing performance inside the pot.

[0042] The working process of the composite exhaust device is as follows:

[0043] When cooking food, after the steam pressure in the pot reaches a certain level, the steam enters the composite exhaust device from the air inlet 12, and the steam flows from the air duct 32 of the air duct splitter hood 3 to the exhaust hood 2. After the steam hits the top plate 23, part of it is discharged outward from the air outlet 21 along the fluid channel formed by the main baffle 221 and the first sub-baffle 222. After the flow of part of the steam is blocked, it is cooled and condensed into water droplets in the gas gathering cavity 223, falls into the water collecting tank 33, and flows back into the pot through the water leakage port 34.

[0044] Embodiment 2

[0045] This embodiment also discloses an electric rice cooker, comprising a composite exhaust device and a pot body. The composite exhaust device is detachably mounted on the pot body and is used to exhaust high-pressure steam when cooking food, prevent direct steam injection, and collect food essence through reflux.

[0046] According to the disclosure and teaching of the above description, the technical personnel in the field of the utility model can also change and modify the above implementation. Therefore, the utility model is not limited to the specific implementation methods disclosed and described above, and some modifications and changes of the utility model should also fall within the scope of protection of the claims of the utility model. In addition, although some specific terms are used in this specification, these terms are only for the convenience of description and do not constitute any limitation to the utility model.

Claims

1. A composite exhaust device, comprising a pot cover (1), an exhaust hood (2) and an air bleed flow divider hood (3), wherein an exhaust port (11) and an air inlet (12) are respectively arranged on both end surfaces of the pot cover (1), the exhaust hood (2) and the air bleed flow divider hood (3) are combined and arranged in the pot cover (1), the exhaust hood (2) is butted against the exhaust port (11), and the air bleed flow divider hood (3) is butted against the air inlet (12), and characterized in that: The air bleed diverter hood (3) comprises an air bleed port (31), an air guide pipe (32), a water collecting trough (33) and a water leakage port (34); the air bleed port (31) is arranged at the bottom of the air bleed diverter hood (3); one end of the air guide pipe (32) is connected to the air bleed port (31), and the other end extends upward along the bottom surface of the air bleed diverter hood (3); the water collecting trough (33) is arranged around the air guide pipe (32); and the water leakage port (34) is arranged at the bottom of the water collecting trough (33).

2. The composite exhaust device according to claim 1, characterized in that: The exhaust hood (2) comprises an air outlet (21), a flow divider (22) and a top plate (23); the air outlet (21) is arranged on the top plate (23); the flow divider (22) is arranged on the top plate (23); and the flow divider (22) is arranged above the air guide pipe (32).

3. The composite exhaust device according to claim 2, characterized in that: The flow dividing portion (22) comprises a main baffle (221), a first auxiliary baffle (222) and an air gathering cavity (223); the main baffle (221) is arranged on the top plate (23), and the main baffle (221) is directly opposite to the other end of the air guide pipe (32); the main baffle (221) is bent to one side to form the air gathering cavity (223); both ends of the main baffle (221) extend toward the side wall of the exhaust hood (2); the first auxiliary baffle (222) is arranged on the inner side wall of the exhaust hood (2), and the first auxiliary baffle (222) and the end of the main baffle (221) form an air flow channel.

4. The composite exhaust device according to claim 3, characterized in that: The flow splitter (22) further comprises a second auxiliary baffle (224), wherein the second auxiliary baffle (224) is arranged on the inner side wall of the exhaust hood (2), and the second auxiliary baffle (224) is arranged on the other side of the main baffle (221) away from the first auxiliary baffle (222).

5. The composite exhaust device according to claim 3, characterized in that: The gas gathering cavity (223) is arranged above the water leakage port (34).

6. The composite exhaust device according to claim 1, characterized in that: The bottom of the water collecting tank (33) is arranged in a funnel shape, and the water leakage port (34) is arranged at the lowest point of the water collecting tank (33).

7. The composite exhaust device according to claim 1, characterized in that: It also comprises a first sealing ring (4), wherein the first sealing ring (4) is arranged between the exhaust hood (2) and the pot cover (1).

8. The composite exhaust device according to claim 7, characterized in that: It also comprises a second sealing ring (5), wherein the second sealing ring (5) is arranged between the exhaust hood (2) and the bleed air splitter hood (3).

9. The composite exhaust device according to any one of claims 1 to 8, characterized in that: The projections of the air guide pipe (32) and the exhaust port (11) onto the end surface of the pot cover (1) are staggered.

10. An electric rice cooker, characterized in that: A composite exhaust device comprising any one of claims 1-9.

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