A rice cooker rice washing water circulation system with low noise and prevention of condensation reflux

Abstract

The present invention discloses a rice washing water circulation system for a rice cooker with low noise and anti-condensation reflux, comprising: an air pump one, an air pump two and a condensation noise reduction box. Both the air pump one and the air pump two are connected to a water tank. The condensation noise reduction box is provided with an air inlet nozzle, a vent nozzle and an exhaust nozzle. The air outlet end of the air pump one is connected to the air inlet nozzle through a pipeline, the air inlet end of the air pump two is connected to the exhaust nozzle through a pipeline, and the vent nozzle is communicated with the external atmosphere; the cross-sectional area ratios of the condensation noise reduction box to the air inlet nozzle, the vent nozzle and the exhaust nozzle in the horizontal direction are greater than or equal to ten. By setting the condensation noise reduction box, the present invention ensures that when the air pump one or the air pump two is operating, the condensation noise reduction box can play a good noise reduction role; in addition, due to the setting of the condensation noise reduction box, the hot air with moisture pumped out from the inside of the water tank by the air pump one will be condensed and accumulated in the condensation noise reduction box, and the condensed water will not flow back into the inside of the air pump one, preventing the air pump one from being damaged.

Description

Technical Field

[0001] The present invention relates to the field of cooking utensils, and more specifically to a rice washing water circulation system for an electric rice cooker with low noise and anti-condensation reflux. Background Art

[0002] After the electric rice cooker enters the intelligent era, through the combined use of computer chips, program control, and various sensors, it can monitor the temperature in real time to flexibly adjust the firepower. It can not only automatically complete the cooking process, but also realize functions such as reservation and automatic rice washing by setting up various modules. In addition, by setting a water tank inside the electric rice cooker, the purpose of automatic water intake can be achieved. And after adding an air pump, the water circulation for rice washing can be realized by means of negative pressure pumping and positive pressure spraying. Finally, the rice soup with a high starch content is stored in the water tank to reduce the starch content in the rice. However, in the above process, there are still problems such as large noise of the air pump, easy condensation of steam and reflux into the air pump, resulting in its damage or leakage of the pipeline.

[0003] Therefore, how to provide a rice washing water circulation system for an electric rice cooker with low noise and anti-condensation reflux, so as to overcome the above problems, is an urgent problem to be solved by those skilled in the art. Summary of the Invention

[0004] In view of this, the present invention provides a rice washing water circulation system for an electric rice cooker with low noise and anti-condensation reflux.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] A rice washing water circulation system for an electric rice cooker with low noise and anti-condensation reflux, including a water tank, the water tank is detachably covered at the mouth of the inner pot of the electric rice cooker, a water circulation pipeline is arranged on the inner side wall of the inner pot, one end of the water circulation pipeline is arranged at the bottom of the inner pot, the other end is communicated with the inside of the water tank and a check valve I is connected in series between the two, a check valve II is installed by opening a hole at the bottom of the water tank, the check valve II is arranged inside the inner pot and its conduction direction is opposite to that of the check valve I, and further includes:

[0007] An air pump 1, an air pump 2, and a condensation noise reduction box. The air pump 1, the air pump 2, and the condensation noise reduction box are all installed on the rice cooker and are located above the water tank. The intake end of the air pump 1 and the outlet end of the air pump 2 are both connected to the water tank through pipelines. The condensation noise reduction box is horizontally arranged, and an intake nozzle and a vent nozzle are provided at its upper end. An exhaust nozzle is provided at the lower end of the condensation noise reduction box. The outlet end of the air pump 1 is connected to the intake nozzle through a pipeline. The intake end of the air pump 2 is connected to the exhaust nozzle through a pipeline. The vent nozzle is communicated with the external atmosphere; the cross-sectional area ratios of the condensation noise reduction box to the intake nozzle, the vent nozzle, and the exhaust nozzle in the horizontal direction are greater than or equal to ten.

[0008] As can be seen from the above technical solutions, compared with the prior art, the present invention discloses a rice cooker rice washing water circulation system with low noise and anti-condensation backflow. By setting a condensation noise reduction box in the present invention, the cross-sectional area ratios of the condensation noise reduction box to the intake nozzle, the vent nozzle, and the exhaust nozzle in the horizontal direction are greater than or equal to ten. Through the noise reduction principle of sudden change in cross-sectional area, this setting ensures that when the air pump 1 or the air pump 2 is operating, the condensation noise reduction box can play a good noise reduction role; in addition, due to the setting of the condensation noise reduction box, the hot air with moisture pumped out from the inside of the water tank by the air pump 1 will be condensed and accumulated in the condensation noise reduction box, and the condensed water will not flow back into the inside of the air pump 1 to prevent the air pump 1 from being damaged.

[0009] Preferably, it further includes a three-way pipe and multiple silicone hoses. The first interface and the second interface of the three-way pipe are respectively connected to the intake end of the air pump 1 and the outlet end of the air pump 2 through the silicone hoses. The third interface of the three-way pipe is connected to the water tank through the silicone hose. This setting facilitates the connection of the air pump 1, the air pump 2, and the water tank. The silicone hose is non-toxic and high-temperature resistant, ensuring safe use.

[0010] Preferably, the condensation noise reduction box includes a box body and an upper cover. The box body is a barrel-shaped body, and its open end is detachably sealed with the upper cover. The exhaust nozzle communicated with its inside is fixed at the bottom of the box body. The exhaust nozzle is connected to the intake end of the air pump 2 through the silicone hose. The intake nozzle and the vent nozzle are respectively fixed on the side cover surface of the upper cover away from the box body. The intake nozzle is connected to the outlet end of the air pump 1 through the silicone hose. This setting ensures that the condensation noise reduction box has good airtightness and can be reliably connected to the air pump 1 and the air pump 2.

[0011] Preferably, it further includes a limit pipe. The limit pipe is vertically fixed on the bottom wall of the inner side of the condensation noise reduction box and corresponds to and communicates with the exhaust nozzle. This setting can prevent the condensed water from flowing into the inside of the air pump 2 along the exhaust nozzle when there is condensed water accumulated inside the condensation noise reduction box, causing damage to the air pump 2. Brief Description of the Drawings

[0012] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only the embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained according to the provided drawings.

[0013] Figure 1 It is a cross-sectional view of a rice washing water circulation system for a rice cooker with low noise and anti-condensation reflux;

[0014] Figure 2 is Figure 1 A partial enlarged view of part A;

[0015] Figure 3 is Figure 1 A partial enlarged view of part B;

[0016] Figure 4 is Figure 1 A partial enlarged view of part C;

[0017] Figure 5 is Figure 1 A partial enlarged view of part D;

[0018] Figure 6 is Figure 1 A partial enlarged view of part E;

[0019] Figure 7 It is a partial cross-sectional view of a rice washing water circulation system for a rice cooker with low noise and anti-condensation reflux.

[0020] In the figure:

[0021] 1 is a water tank, 2 is an inner pot, 3 is a water circulation pipe, 4 is a first one-way valve, 5 is a second one-way valve, 6 is a first air pump, 7 is a second air pump, 8 is a condensation noise reduction box, 80 is a box body, 81 is an upper cover, 9 is an air inlet nozzle, 10 is a pressure relief nozzle, 11 is an exhaust nozzle, 12 is a three-way pipe, 13 is a silicone hose, 14 is a limiting pipe, 15 is a suction nozzle, and 16 is a pressure relief channel. Detailed Description of the Embodiments

[0022] The following will clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention.

[0023] The present invention discloses a rice washing water circulation system for a rice cooker with low noise and anti-condensation reflux. In the present invention, an air pump 6 and an air pump 7 are arranged at the top of a water tank 1. The air inlet end of the air pump 6 and the air outlet end of the air pump 7 are connected to the water tank 1 through pipelines. This setting can ensure that the inner pot 2 can clean the rice grains inside it; by setting a condensation noise reduction box 8, the condensation noise reduction box 8 is respectively connected to the air pump 6 and the air pump 7 through an air inlet nozzle 9 and an exhaust nozzle 11, and a vent nozzle 10 is also arranged at its top. The cross-sectional area ratios of the condensation noise reduction box 8 to the air inlet nozzle 9, the vent nozzle 10, and the exhaust nozzle 11 in the horizontal direction are greater than or equal to ten. Through the noise reduction principle of sudden change in cross-sectional area, this setting ensures that when the air pump 6 or the air pump 7 is operating, the condensation noise reduction box 8 can play a good noise reduction role; in addition, due to the setting of the condensation noise reduction box 8, the hot air with moisture pumped out from the inside of the water tank 1 by the air pump 6 will be condensed and accumulated in the condensation noise reduction box 8, and the condensed water will not flow back into the air pump 6, preventing the air pump 6 from being damaged.

[0024] Embodiment

[0025] See attached Figure 1-7Schematic diagrams of the overall and partial structures of an embodiment of the present invention. The present invention specifically discloses a rice cooker rice washing water circulation system with low noise and anti-condensation reflux, including a water tank 1. The water tank 1 is detachably covered at the mouth of the inner pot 2 of the rice cooker (not shown in the figure). A pressure relief channel 16 communicating with the outside is provided at the top of the inner pot 2. When the water tank 1 is covered at the mouth of the inner pot 2, the pressure inside the inner pot 2 can be increased or decreased to achieve the balance between the pressure inside the inner pot 2 and the external atmospheric pressure through the pressure relief channel 16. A water circulation pipeline 3 is provided on the inner side wall of the inner pot 2. One end of the water circulation pipeline 3 is arranged at the bottom of the inner pot 2 and communicates with the inside of the inner pot 2, and the other end communicates with the inside of the water tank 1, and a check valve 4 is connected in series between the two. The diameter of the end of the water circulation pipeline 3 located at the bottom of the inner pot 2 is very small or is provided with a filter screen (not shown in the figure). The purpose is to prevent rice grains from entering the inside of the water circulation pipeline 3 and causing blockage when extracting the water inside the inner pot 2. A suction nozzle 15 is fixed on the water tank 1. The suction nozzle 15 is injection molded with liquid silicone and has a hardness of 50±3A. The check valve 4 is centrally embedded inside the suction nozzle 15. Multiple sealing rings are fixed on the outer side wall of the suction nozzle 15. When the water tank 1 is no longer covered at the mouth of the inner pot 2, the suction nozzle 15 is separated from the water circulation pipeline 3. When the water tank 1 is covered at the mouth of the inner pot 2, the suction nozzle 15 is tightly embedded inside the water circulation pipeline 3 and an interference fit is formed between the two. The interference amount is 1±0.2mm. This setting ensures that the check valve 4 and the water circulation pipeline 3 can be in position correspondence and can be connected, facilitating the entry of gas or liquid into the water tank 1 along the water circulation pipeline 3. A check valve 5 is opened and installed at the bottom of the water tank 1. The check valve 5 is arranged inside the inner pot 2 and its conduction direction is opposite to that of the check valve 4. When the inside of the water tank 1 is under positive pressure, the check valve 5 conducts. When the inside of the water tank 1 is under negative pressure, the check valve 4 conducts. When the inner pot 2 is placed horizontally normally, the height of the check valve 4 is higher than the height of the check valve 5. It further includes:

[0026] An air pump 6, an air pump 7, and a condensation noise reduction box 8. The air pump 6, the air pump 7, and the condensation noise reduction box 8 are all installed on the rice cooker and are located above the water tank 1. As for the specific positions where the air pump 6, the air pump 7, and the condensation noise reduction box 8 are installed on the rice cooker, since there are various types and styles of rice cookers, and this application mainly designs the connection structure and working principle of the condensation noise reduction box 8, the air pump 6, and the air pump 7, therefore, in this embodiment, the specific installation positions will not be further explained. The intake end of the air pump 6 and the outlet end of the air pump 7 are both connected to the water tank 1 through pipelines. The condensation noise reduction box 8 is horizontally arranged, and an intake nozzle 9 and a relief nozzle 10 are provided at its upper end. An exhaust nozzle 11 is provided at the lower end of the condensation noise reduction box 8. The outlet end of the air pump 6 is connected to the intake nozzle 9 through a pipeline, and the intake end of the air pump 7 is connected to the exhaust nozzle 11 through a pipeline. The relief nozzle 10 is communicated with the external atmosphere; the cross-sectional area ratios of the condensation noise reduction box 8 to the intake nozzle 9, the relief nozzle 10, and the exhaust nozzle 11 in the horizontal direction are greater than or equal to ten.

[0027] More specifically, it further includes a tee 12 and multiple silicone hoses 13. The first interface and the second interface of the tee 12 are respectively connected to the intake end of the air pump 6 and the outlet end of the air pump 7 through the silicone hoses 13, and the third interface of the tee 12 is connected to the water tank 1 through the silicone hose 13. The inner diameter of the silicone hose 13 in this embodiment is 1.5 mm.

[0028] More specifically, the condensation noise reduction box 8 includes a box body 80 and an upper cover 81. The box body 80 is a barrel-shaped body, and its open end is detachably sealed with the upper cover 81. The exhaust nozzle 11 communicating with its interior is fixed at the bottom of the box body 80, and the exhaust nozzle 11 is connected to the intake end of the air pump 7 through the silicone hose 13. The intake nozzle 9 and the relief nozzle 10 are respectively fixed on the side cover surface of the upper cover 81 away from the box body 80, and the intake nozzle 9 is connected to the outlet end of the air pump 6 through the silicone hose 13.

[0029] More specifically, it further includes a limit pipe 14. The limit pipe 14 is vertically fixed on the inner bottom wall of the condensation noise reduction box 8 and corresponds to and communicates with the exhaust nozzle 11.

[0030] The working principle of the rice washing water circulation system of this rice cooker:

[0031] When the air pump 6 or the air pump 7 is not working, both of them are in a closed state, and neither gas nor liquid can pass through.

[0032] When the first air pump 6 operates, the first air pump 6 extracts the gas inside the water tank 1 and pumps it into the condensation and noise reduction box 8. Since the condensation and noise reduction box 8 is communicated with the outside atmosphere through the air release nozzle 10, the air containing heat in the water tank 1 will be pumped into the atmosphere. Part of the gas containing moisture in the water tank 1 will condense and accumulate inside the condensation and noise reduction box 8 when it enters the condensation and noise reduction box 8. After the first air pump 6 operates for a period of time, a negative pressure will be formed inside the water tank 1. When the negative pressure value inside the water tank 1 reaches a certain value, the first one-way valve 4 will open. At this time, when the first air pump 6 continues to operate, the water at the bottom of the inner pot 2 will be adsorbed and enter the water tank 1 along the water circulation pipeline 3. As for when the first air pump 6 stops, it can be determined according to the height of the water level inside the water tank 1. For example, a water level sensor probe is set at the top inside the water tank 1. When the water level inside the water tank 1 submerges the water level sensor probe, the first air pump 6 stops operating. These have mature applications in the prior art, so the present embodiment will not explain them in detail.

[0033] When the second air pump 7 operates, the second air pump 7 extracts the gas inside the condensation and noise reduction box 8 and pumps it into the water tank 1. Since the condensation and noise reduction box 8 is communicated with the outside atmosphere through the air release nozzle 10, the pressure inside the condensation and noise reduction box 8 is always the same as the outside atmospheric pressure. After the second air pump 7 operates for a period of time, a positive pressure will be formed inside the water tank 1. When the pressure value inside the water tank 1 reaches a certain value, the second one-way valve 5 will open. At this time, when the second air pump 7 continues to operate, the water in the water tank 1 will be pumped out and flow back into the inner pot 2.

[0034] The first air pump 6 and the second air pump 7 generate relatively large noise during operation. The cross-sectional areas of the air inlet nozzle 9, the air outlet nozzle 11, and the air release nozzle 10 are much smaller than the cross-sectional area of the condensation and noise reduction box 8. According to the noise reduction principle of cross-sectional area mutation, when the first air pump 6 and the second air pump 7 pump gas into or out of the condensation and noise reduction box 8, the condensation and noise reduction box 8 can achieve a good noise reduction effect. According to actual tests, when the condensation and noise reduction box 8 is not installed, the measured noise of the first air pump 6 and the second air pump 7 during operation is 70 dBA. After the condensation and noise reduction box 8 is installed, the measured noise is 57 dBA.

[0035] The function of the limit pipe 14 is to prevent the condensed water from entering the second air pump 7 along the air outlet nozzle 11 when there is condensed water accumulated inside the condensation and noise reduction box 8, causing damage to the second air pump 7.

[0036] The above-mentioned first air pump 6 and the second air pump 7 operate in sequence, and the rice washing operation of the rice cooker can be realized.

[0037] Each embodiment in this specification is described in a progressive manner. The key point of each embodiment is to illustrate the differences from other embodiments. The same or similar parts among the embodiments can be referred to each other.

[0038] The foregoing description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A rice washing water circulation system for a rice cooker with low noise and anti-condensation backflow, comprising a water tank (1), the water tank (1) is detachably covered at the mouth of the inner pot (2) of the rice cooker, a water circulation pipeline (3) is arranged on the inner side wall of the inner pot (2), one end of the water circulation pipeline (3) is arranged at the bottom of the inner pot (2), the other end is communicated with the inside of the water tank (1) and a check valve one (4) is connected in series between the two, a check valve two (5) is installed by opening a hole at the bottom of the water tank (1), the check valve two (5) is arranged inside the inner pot (2) and its conduction direction is opposite to that of the check valve one (4), characterized in that, It further includes: an air pump 1 (6), an air pump 2 (7), and a condensation noise reduction box (8). The air pump 1 (6), the air pump 2 (7), and the condensation noise reduction box (8) are all installed on the rice cooker and located above the water tank (1). The intake end of the air pump 1 (6) and the outlet end of the air pump 2 (7) are both connected to the water tank (1) through pipelines. The condensation noise reduction box (8) is horizontally arranged, and an intake nozzle (9) and a deflation nozzle (10) are provided at its upper end. An exhaust nozzle (11) is provided at the lower end of the condensation noise reduction box (8). The outlet end of the air pump 1 (6) is connected to the intake nozzle (9) through a pipeline. The intake end of the air pump 2 (7) is connected to the exhaust nozzle (11) through a pipeline. The deflation nozzle (10) is communicated with the external atmosphere. The cross-sectional area ratio of the condensation noise reduction box (8) to the intake nozzle (9), the deflation nozzle (10), and the exhaust nozzle (11) in the horizontal direction is greater than or equal to ten; It further includes a three-way pipe (12) and multiple silicone hoses (13). The first interface and the second interface of the three-way pipe (12) are respectively connected to the intake end of the air pump 1 (6) and the outlet end of the air pump 2 (7) through the silicone hoses (13). The third interface of the three-way pipe (12) is connected to the water tank (1) through the silicone hoses (13); It further includes a limit pipe (14). The limit pipe (14) is vertically fixed on the bottom wall of the inner side of the condensation noise reduction box (8) and corresponds to and is communicated with the exhaust nozzle (11).

2. The rice washing water circulation system of a rice cooker with low noise and anti-condensation reflux according to claim 1, characterized in that, The condensation noise reduction box (8) includes a box body (80) and an upper cover (81). The box body (80) is a barrel-shaped body, and its open end is detachably sealed with the upper cover (81). The bottom of the box body (80) is fixed with the exhaust nozzle (11) communicated with its interior. The exhaust nozzle (11) is connected to the intake end of the air pump 2 (7) through the silicone hose (13). The intake nozzle (9) and the deflation nozzle (10) are respectively fixed on the side cover surface of the upper cover (81) away from the box body (80). The intake nozzle (9) is connected to the outlet end of the air pump 1 (6) through the silicone hose (13).

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