Full-automatic micro-pressure stewing machine

Abstract

The utility model discloses a full-automatic micro-pressure stewing machine. The full-automatic micro-pressure stewing machine comprises a water path system, a control system and a control system, the pressure in the stewing pot assembly is generated by heating water in the stewing pot or injecting steam into the stewing cup; when the condensation pipeline is opened, steam in the stewing cup can be discharged through the condensation pipeline; when the condensation pipeline is closed, a micro-pressure state can be formed in the stewing cup; the pressure in the stewing pot assembly is automatically controlled through an electromagnetic valve switch, an NTC (Negative Temperature Coefficient) and a program on the condensing pipeline; the condensation pipeline comprises a pressure protection pipeline and a pressure relief pipeline, the pressure protection pipeline is in a closed state under the normal condition, and when the pressure exceeds a set value, the pressure relief pipeline can be passively started for pressure relief; after stewing is completed, water in the stewing pot is drained through the drainage pipeline, air in the stewing pot assembly can be pumped out through the drainage pipeline, and a vacuum state is formed in the stewing pot assembly; the time required for stewing the cubilose can be shortened.

Description

Technical Field

[0001] The utility model relates to the technical field of stewing machines, in particular to a fully automatic micro-pressure stewing machine. Background Art

[0002] In the related art, with the improvement of people's living standards, the bird's nest machine for stewing bird's nest is widely used in families, and the market prospect is unanimously optimistic. At present, the existing bird's nest machines have at least one of the following deficiencies:

[0003] (1) By using the method of water bath stewing or air separation heating, and conducting heat through water or air to stew the bird's nest, the stewing time is relatively long.

[0004] (2) In water bath stewing, the stewing cup conducts heat through water, and the bird's nest cannot combine with water vapor, resulting in a general taste of the bird's nest and poor user experience.

[0005] (3) When the bird's nest machine uses the water bath stewing method, it requires manual water addition, and the ratio of the water addition amount to the gram number of the bird's nest is inaccurate, resulting in a large difference in the taste of the stewed bird's nest among different users.

[0006] (4) When stewing the bird's nest under normal pressure, that is, the existing method of stewing the bird's nest by water bath, the steam completely sprays out, and there is no pressure inside and outside the stewing cup, so the required stewing time is relatively long.

[0007] Therefore, it is necessary to improve the existing technology. Content of the Utility Model

[0008] The utility model aims to solve at least one of the problems existing in the related art to a certain extent. For this reason, an object of the utility model is to provide a fully automatic micro-pressure stewing machine, which can reduce the time required for stewing bird's nest.

[0009] The above object is achieved by the following technical solutions:

[0010] A fully automatic micro-pressure stewing machine, comprising:

[0011] A housing assembly, in which a water circuit system is arranged. The water circuit system includes a water inlet pipeline, a drainage pipeline and a condensation water circuit. The housing assembly includes a base part and a body part, and the body part is arranged on the base part;

[0012] A stewing pot assembly, which can be placed on the base part. The stewing pot assembly includes a stewing pot and a stewing cup. The stewing cup can be placed in the stewing pot from the top of the stewing pot. A top cover is arranged at the top of the stewing cup, and a through hole is opened at the center of the top cover. A stewing pot heating module is arranged on the base part for heating the stewing pot;

[0013] A water adding mechanism, which is arranged above the stewing pot assembly and on the body part;

[0014] The water inlet pipeline is used to heat external water and add hot water, normal temperature water or steam into the stew pot through the water adding mechanism via the through hole, and inject hot water or normal temperature water into the stew kettle;

[0015] The drain pipeline is used to drain the water in the stew kettle out of the automatic stewing machine or store it in the water storage box in the housing assembly;

[0016] When the condensation water path is opened, the steam in the stew pot can enter the condensation water path through the through hole and the water adding mechanism, and be discharged out through the condensation water path; when the condensation water path is closed, a micro-pressure state can be formed in the stew pot.

[0017] In some embodiments, the water adding mechanism includes a housing assembly and a water adding head arranged on the housing assembly. A driving device is arranged on the housing assembly to drive the water adding mechanism to lift. At least a first channel and a second channel are arranged on the water adding head. The first channel is communicated with the water inlet pipeline, the second channel is communicated with the condensation water path, and the first channel and the second channel are evenly distributed within the inner diameter range of the through hole.

[0018] In some embodiments, the condensation water path includes a pressure protection pipeline and a pressure relief pipeline. The pressure protection pipeline includes a first discharge pipe, a steam heat dissipation pipe, a second discharge pipe and a first solenoid valve connected in sequence. A first temperature sensor is arranged between the second channel and the first discharge pipe. One outlet of the first solenoid valve is connected to a third discharge pipe;

[0019] The pressure relief pipeline includes a fourth discharge pipe. The other outlet of the first solenoid valve is connected to a fourth discharge pipe. A mechanical first one-way pressure valve is arranged on the fourth discharge pipe;

[0020] The steam heat dissipation pipe is spirally arranged, and a heat dissipation fan is arranged in the steam heat dissipation pipe.

[0021] In some embodiments, a third channel is arranged on the water adding head. The pressure relief pipeline further includes a fifth discharge pipe. The third channel is connected to the fifth discharge pipe. A mechanical second one-way pressure valve is arranged between the third channel and the fifth discharge pipe. The opening pressure of the second one-way pressure valve is greater than the opening pressure of the first one-way pressure valve;

[0022] The control system of the stewing machine is electrically connected to the first temperature sensor and the first solenoid valve respectively. The control system controls the operation of the stewing machine according to a preset program to form a micro-pressure state in the stew pot or complete exhaust and pressure relief.

[0023] In some embodiments, a pressure relief channel is provided on the top cover. The pressure relief channel is communicated with the internal space of the stew pot. A steel ball is arranged in the pressure relief channel, and a spring is arranged on the steel ball. The spring presses on the steel ball to block the air inlet of the pressure relief channel. When the pressure in the stew pot is greater than a preset pressure threshold, the steel ball can overcome the elastic force of the spring and open the air inlet of the pressure relief channel, and the steam in the stew pot can be discharged out through the pressure relief channel;

[0024] The opening pressure of the pressure relief channel is greater than the opening pressure of the second one-way pressure valve.

[0025] In some embodiments, the water inlet pipeline includes a first connecting pipe, an electromagnetic pump, a second connecting pipe, a steam generator, a third connecting pipe, a second temperature sensor, a fourth connecting pipe and a second solenoid valve connected together in sequence. The fourth connecting pipe is connected to the water inlet of the second solenoid valve. One of the outlets of the second solenoid valve is connected to a fifth connecting pipe, and the fifth connecting pipe is used to inject hot water or normal temperature water or steam into the top of the stew pot, and a water flow sensor is arranged on the first connecting pipe;

[0026] The water inlet pipeline further includes a sixth connecting pipe, a third solenoid valve, a seventh connecting pipe, an eighth connecting pipe and a three-way pipe. One end of the sixth connecting pipe is connected to the other outlet of the second solenoid valve, and the other end is connected to the water inlet end of the third solenoid valve. One of the outlets of the third solenoid valve is connected to the three-way pipe through the seventh connecting pipe, and the other outlet drains water to the water storage box through the eighth connecting pipe.

[0027] In some embodiments, the drainage pipeline includes a ninth connecting pipe, a three-way pipe, a first water pump, a tenth connecting pipe, a drain pipe and a second water pump. One end of the ninth connecting pipe is used to be connected to the water inlet connection structure at the bottom of the stew pot, and the other end is connected to the first interface of the three-way pipe. The second interface of the three-way pipe is connected to the seventh connecting pipe, and the third interface of the three-way pipe discharges water to the water storage box through the tenth connecting pipe. The first water pump is arranged on the tenth connecting pipe;

[0028] The shown drain pipe is used to drain the water in the water storage box outwards, and the second water pump is arranged on the drain pipe.

[0029] Compared with the prior art, the present utility model has at least the following beneficial effects:

[0030] 1. A full-automatic micro-pressure stewing machine of the present utility model is beneficial to improving the heating efficiency and enhancing the user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 It is a three-dimensional schematic diagram of a fully automatic micro-pressure cooking machine in the embodiment;

[0032] Figure 2 It is a partial cross-sectional view of a fully automatic micro-pressure cooking machine in the embodiment;

[0033] Figure 3 is Figure 2 a partial enlarged view of part A in

[0034] Figure 4 It is a partial schematic Figure 1 ;

[0035] Figure 5 It is a partial schematic Figure 2 ;

[0036] Figure 6 It is a partial schematic Figure 3 ;

[0037] Figure 7 It is a process schematic diagram of an automatic micro-pressure cooking machine in the embodiment;

[0038] Figure 8 It is a detailed flow chart of an automatic micro-pressure cooking machine in the embodiment. Specific implementation manners

[0039] The following embodiments are used to illustrate the present invention, but the present invention is not limited by these embodiments. Modifying the specific implementation manners of the present invention or making equivalent replacements for some technical features without departing from the spirit of the present invention's solution shall all be covered within the scope of the technical solution claimed by the present invention.

[0040] Embodiment 1: As Figures 1 to 8 shown, this embodiment provides a fully automatic micro-pressure cooking machine, including:

[0041] A housing assembly 1, in which a water circuit system is arranged. The water circuit system includes a water inlet pipeline, a drainage pipeline, and a condensation water circuit. The housing assembly 1 includes a base part and a body part, and the body part is arranged on the base part;

[0042] The stew pot assembly 2 can be placed on the base part. The stew pot assembly 2 includes a stew pot 21 and a stew cup 22. The stew cup 22 can be placed inside the stew pot 21 from the top of the stew pot 21. A top cover 23 is provided on the top of the stew cup 22, and a through hole 230 is opened at the center of the top cover 23. A stew pot heating module 5 is provided on the base part for heating the stew pot 21. By heating the water in the stew pot 21 with the stew pot heating module 5 and / or adding high-temperature steam or hot water to the stew cup 22, the purpose of increasing the pressure in the stew cup 22 is achieved.

[0043] The water adding mechanism 3 is arranged above the stew pot assembly 2 on the body part.

[0044] The water inlet pipeline is used to heat external water and add hot water, normal temperature water or steam to the stew cup 22 through the water adding mechanism 3 via the through hole 230, and inject hot water or normal temperature water into the stew pot 21.

[0045] The drainage pipeline is used to drain the water in the stew pot 21 out of the stewing machine or store it in the water storage box 41 inside the housing assembly 1.

[0046] When the condensation water path is opened, the steam in the stew cup 22 can enter the condensation water path through the through hole 230 and the water adding mechanism 3 and be discharged outwards through the condensation water path; when the condensation water path is closed, a micro-pressure state can be formed in the stew cup 22.

[0047] The fully automatic micro-pressure stewing machine provided in this embodiment is beneficial to improving the heating efficiency and the user experience. Specifically, when the stew cup 22 does not require micro-pressure, the steam in the stew cup 22 can enter the condensation water path through the through hole 230 and the water adding mechanism 3 and be discharged outwards through the condensation water path; when the stew cup 22 requires micro-pressure, the condensation water path is closed. At this time, the steam in the stew cup 22 cannot be discharged outwards. As the steam in the stew cup 22 increases and the temperature rises, the pressure in the stew cup 22 rises, thereby achieving the purpose of increasing the pressure in the stew cup 22 and forming a micro-pressure state in the stew cup 22, thereby improving the heating efficiency, reducing the stewing time of bird's nest, and improving the user experience.

[0048] The fully automatic micro-pressure stewing machine provided in this embodiment adopts an internal and external double heating method. The stew pot heating module 5 uses a heating plate, and the heating plate can heat the water in the stew pot 21 to conduct heat to heat the bird's nest or food in the stew cup 22, which is the same as the existing water bath stewing. The internal heating is to spray high-temperature steam into the stew cup 22. After the steam heat meets the water, the water temperature rising speed is accelerated.

[0049] The high-temperature steam stewed bird's nest has the following uses:

[0050] 1. Accelerate the rising speed of the water temperature in the stewing cup 22, thereby reducing the time for stewing bird's nest.

[0051] 2. The high-temperature steam jets out at a certain speed, enabling the bird's nest to quickly combine with the water vapor, resulting in a better taste when stewing the bird's nest.

[0052] The fully automatic micro-pressure stewing machine provided in this embodiment can adopt an intelligent algorithm. Users can select different types of bird's nest, input the grams of dry bird's nest, and the intelligent automatic stewing machine automatically adds water to the stewing cup in a fixed quantity. At the same time, it automatically adds normal temperature water or high-temperature water to the stewing pot outside the bird's nest stewing cup to ensure the best taste of the bird's nest.

[0053] In addition, it can set the time, automatically add water to the stewing cup, and achieve the purpose of pre-ordering the stewing of bird's nest.

[0054] After the bird's nest is stewed, it automatically extracts the high-temperature water in the stewing pot, and can add normal temperature water to the stewing pot automatically, accelerating the cooling of the bird's nest in the stewing cup.

[0055] After the bird's nest is stewed, it automatically extracts the high-temperature water in the stewing pot. When pouring out the bird's nest, there is no need to take out the stewing cup from the stewing pot.

[0056] In this embodiment, the water adding mechanism 3 includes a housing assembly 31 and a water adding head 32 provided on the housing assembly 31. A driving device 51 is provided on the outer shell assembly 1 to drive the water adding mechanism 3 to lift. At least a first channel 321 and a second channel 322 are provided on the water adding head 32. The first channel 321 is communicated with the water inlet pipeline, and the second channel 322 is communicated with the condensation water path. The first channel 321 and the second channel 322 are evenly distributed within the inner diameter range of the through hole 230. Its structure is simple. By controlling the lifting of the water adding mechanism 3, hot water, normal temperature water or steam is added into the stewing cup 22 through the first channel 321 of the water adding mechanism 3, and steam is discharged out through the second channel 322.

[0057] In this embodiment, the condensation water path includes a pressure protection pipeline and a pressure relief pipeline. The pressure protection pipeline includes a first discharge pipe 301, a steam heat dissipation pipe 302, a second discharge pipe 303 and a first electromagnetic valve 304 connected in sequence. A first temperature sensor NTC305 is provided between the second channel 322 and the first discharge pipe 301. One outlet of the first electromagnetic valve 304 is connected to a third discharge pipe 306;

[0058] The pressure relief pipeline includes a fourth discharge pipe 307. The other outlet of the first electromagnetic valve 304 is connected to a fourth discharge pipe 307. A mechanical first one-way pressure valve 308 is provided on the fourth discharge pipe 307;

[0059] The steam radiating pipe 302 is arranged in a spiral shape, and a radiating fan 309 is arranged inside the steam radiating pipe 302, so as to accelerate the heat dissipation and condensation efficiency of the steam radiating pipe 302.

[0060] When the stew pot 22 does not require slight pressure, the steam in the stew pot 22 can enter the condensation water path through the through hole 230 and the water adding mechanism 3, and is discharged outwards through the first discharge pipe 301, the steam radiating pipe 302, the second discharge pipe 303, the first electromagnetic valve 304 and the third discharge pipe 306;

[0061] When the stew pot 22 requires slight pressure, the first electromagnetic valve 304 is activated, and the steam in the stew pot 22 enters the condensation water path, and enters the fourth discharge pipe 307 through the first discharge pipe 301, the steam radiating pipe 302, the second discharge pipe 303 and the first electromagnetic valve 304. Since the first one-way pressure valve 308 is in a normally closed state, the steam in the stew pot 22 cannot be discharged outwards. As the steam in the stew pot 22 increases and the temperature rises, the pressure in the stew pot 22 increases, thereby achieving an increase in the pressure in the stew pot 22, forming a slight pressure state in the stew pot 22, thereby improving the heating efficiency, reducing the time for stewing bird's nest, and improving the user experience.

[0062] When the pressure in the stew pot 22 is greater than the opening pressure of the first one-way pressure valve 308, the first one-way pressure valve 308 will be opened to achieve exhaust pressure relief, thereby avoiding accidents caused by excessive pressure in the stew pot 22. If the first one-way pressure valve 308 fails, as the pressure and temperature in the stew pot 22 increase, when the first temperature sensor 305 detects that the real-time steam temperature in the condensation water path is greater than the preset temperature threshold, the control system will control the first electromagnetic valve 304 to close. At this time, the steam in the stew pot 22 can enter the condensation water path through the through hole 230 and the water adding mechanism 3, and is discharged outwards through the first discharge pipe 301, the steam radiating pipe 302, the second discharge pipe 303, the first electromagnetic valve 304 and the third discharge pipe 306, thereby achieving exhaust pressure relief and avoiding accidents caused by excessive pressure in the stew pot 22, thereby achieving double protection.

[0063] Further, a third channel 323 is arranged on the water adding head 32. The pressure relief pipeline further includes a fifth discharge pipe 310. The third channel 323 is connected to the fifth discharge pipe 310. A mechanical second one-way pressure valve 311 is arranged between the third channel 323 and the fifth discharge pipe 310. The opening pressure of the second one-way pressure valve 311 is greater than the opening pressure of the first one-way pressure valve 308;

[0064] The control system of the stewing machine is electrically connected to the first temperature sensor 305 and the first electromagnetic valve 304 respectively. The control system controls the operation of the stewing machine according to a preset program to form a micro-pressure state or complete exhaust pressure relief in the stewing pot 22.

[0065] If the first electromagnetic valve 304 fails in the open state and the first one-way pressure valve 308 fails at the same time, as the pressure in the stewing pot 22 increases and when the pressure in the stewing pot 22 is greater than the opening pressure of the second one-way pressure valve 311, the second one-way pressure valve 311 will be opened to achieve exhaust pressure relief. The steam can be discharged outwards through the third channel 323 and the fifth discharge pipe 310. Thus, accidents caused by excessive pressure in the stewing pot 22 can be avoided, and triple protection is achieved.

[0066] Furthermore, a pressure relief channel 231 is provided on the top cover 23. The pressure relief channel 231 is communicated with the internal space of the stewing pot 22. A steel ball 232 is provided in the pressure relief channel 231, and a spring 233 is provided on the steel ball 232. The spring 233 presses on the steel ball 232 to block the air inlet 2310 of the pressure relief channel 231 by the steel ball 232. When the pressure in the stewing pot 22 is greater than a preset pressure threshold, the steel ball 232 can overcome the elastic force of the spring 233 and open the air inlet 2310 of the pressure relief channel 231. The steam in the stewing pot 22 can be discharged outwards through the pressure relief channel 231.

[0067] The opening pressure of the pressure relief channel 231 is greater than the opening pressure of the second one-way pressure valve 311.

[0068] If the first electromagnetic valve 304 fails in the open state, and the first one-way pressure valve 308 and the second one-way pressure valve 311 fail at the same time, and when the pressure in the stewing pot 22 is greater than the opening pressure of the pressure relief channel 231, the steel ball 232 overcomes the elastic force of the spring 233 and opens the air inlet 2310 of the pressure relief channel 231. The steam in the stewing pot 22 can be discharged outwards through the pressure relief channel 231. Thus, accidents caused by excessive pressure in the stewing pot 22 can be avoided, and quadruple protection is achieved. The quadruple protection includes electronic control protection and mechanical protection, greatly improving the safety of product use and avoiding accidents caused by excessive pressure in the stewing pot 22.

[0069] In this embodiment, the water inlet pipeline includes a first connecting pipe 101, an electromagnetic pump 102, a second connecting pipe 103, a steam generator 104, a third connecting pipe 105, a second temperature sensor NTC 106, a fourth connecting pipe 107, and a second solenoid valve 108 that are connected together in sequence. Among them, the fourth connecting pipe 107 is connected to the water inlet of the second solenoid valve 108. One of the outlets of the second solenoid valve 108 is connected to a fifth connecting pipe 109. The fifth connecting pipe 109 is used to inject hot water, normal temperature water, or steam into the top of the stew pot 22. A water flow sensor 42 is provided on the first connecting pipe 101 to detect the water inlet situation of the water inlet pipeline and ensure that the steam generator 104 is started only after a stable water flow is detected, thereby improving the reliability and safety of product use;

[0070] The water inlet pipeline further includes a sixth connecting pipe 110, a third solenoid valve 111, a seventh connecting pipe 112, an eighth connecting pipe 113, and a tee pipe 202. One end of the sixth connecting pipe 110 is connected to the other outlet of the second solenoid valve 108, and the other end is connected to the water inlet end of the third solenoid valve 111. One of the outlets of the third solenoid valve 111 is connected to the tee pipe 202 through the seventh connecting pipe 112, and the other outlet drains water to the water storage box 41 through the eighth connecting pipe 113. The first water pump 203 is arranged on the tenth connecting pipe 204, and its structure is simple. Thus, it can realize injecting normal temperature water or high-temperature hot water into the bottom of the stew pot 21, or draining water, meeting more usage requirements.

[0071] In this embodiment, the drainage pipeline includes a ninth connecting pipe 201, a tee pipe 202, a first water pump 203, a tenth connecting pipe 204, a drain pipe 205, and a second water pump 206. One end of the ninth connecting pipe 201 is used to connect to the water inlet connection structure 210 at the bottom of the stew pot 21, and the other end is connected to the first interface 2021 of the tee pipe 202. The second interface 2022 of the tee pipe 202 is connected to the seventh connecting pipe 112. The third interface 2023 of the tee pipe 202 discharges water to the water storage box 41 through the tenth connecting pipe 204. Its structure is simple, the design is reasonable and ingenious. Thus, the water in the stew pot can be drained from the bottom of the stew pot;

[0072] The shown drain pipe 205 is used to drain the water in the water storage box 41 to the outside. A second water pump 206 is provided on the drain pipe 205. Its structure is simple, the design is reasonable and ingenious. Thus, the water in the water storage box 41 can be drained.

[0073] An automatic stewing machine provided by this embodiment has at least the following advantages:

[0074] 1. It adopts double heating inside and outside. Among them, the stewing cup is heated by steam, and the water in the stewing pot is heated by a heating plate outside, using the water conduction method.

[0075] 2. It automatically adds water to the inside of the stewing cup and the outside of the stewing pot, and at the same time, it can add water with a temperature from normal temperature to a specified temperature.

[0076] 3. It can automatically add water in a fixed quantity according to the amount of bird's nest, automatically set the stewing time, and automatically replenish water to the stewing pot during the stewing process.

[0077] 4. After the stewing is completed, the high-temperature water in the stewing pot can be drawn out, and normal-temperature water can be re-injected to cool the bird's nest with water.

[0078] 5. After the stewing is completed, draw out the water in the stewing pot, and directly pour the bird's nest out of the stewing cup without separating the stewing cup from the stewing pot.

[0079] Embodiment 2: As Figures 1 to 8 shown, this embodiment provides a control method for a fully automatic micro-pressure stewing machine, which is applied to the fully automatic micro-pressure stewing machine as described in Embodiment 1, and it includes the following steps:

[0080] Turn on the power supply and standby.

[0081] Conduct system self-check and self-cleaning.

[0082] Add hot water into the stewing cup 22.

[0083] Add hot water into the stewing pot 21.

[0084] Start the heating module 5 of the stewing pot to heat the water in the stewing pot.

[0085] Add steam into the stewing cup 22.

[0086] Close the condensation water path and carry out micro-pressure stewing.

[0087] Drain the water in the stewing pot 21.

[0088] Complete the stewing.

[0089] The control method for a fully automatic micro-pressure stewing machine provided by this embodiment is beneficial to improving the heating efficiency and enhancing the user experience.

[0090] Specifically, it adopts the double heating method inside and outside the stewing cup. The stewing pot assembly 2 uses a heating plate to heat the water in the stewing pot 21, and makes the water conduct heat to heat the bird's nest or food in the stewing cup 22, which is the same as the existing water bath stewing. The internal heating is to spray high-temperature steam into the inside of the stewing cup 22. After the steam heat meets the water, it accelerates the rising speed of the water temperature in the stewing cup.

[0091] In this embodiment, the steps of adding steam into the stewing cup 22 and micro-pressure stewing at least include the following steps:

[0092] Detect the real-time steam temperature in the condensation water path through the first temperature sensor 305;

[0093] When pressure needs to be generated in the stew pot, the program controls the first solenoid valve 304 to start, the third discharge pipe 306 is closed, and the steam in the condensation water path is blocked in the fourth discharge pipe 307;

[0094] Adjust the heating powers of the steam generator 104 and the stew pot heating module 5;

[0095] Detect the real-time steam temperature in the condensation water path through the first temperature sensor 305 and the water temperature in the stew pot through the fourth temperature sensor;

[0096] When the real-time steam temperature is higher than the steam temperature threshold or the water temperature in the stew pot is higher than the set temperature, control the first solenoid valve 304 to close.

[0097] The system self-check and self-cleaning include the following steps:

[0098] Judge whether the water storage box 41 is placed and whether the water bottle or water bucket of the adapter 43 is installed in place;

[0099] Judge whether the stew pot is installed in place; if the stew pot is installed in place, start the stepping motor and detect whether the stew pot lid is covered. If the stew pot lid is covered, enter the self-cleaning program;

[0100] Control the electromagnetic pump 102 to start;

[0101] Detect whether there is water in the water inlet pipe through the water flow sensor 42;

[0102] Control the steam generator 104 to start;

[0103] The start and self-cleaning are completed; the system enters the working state.

[0104] Adding hot water to the stew cup 22 includes the following steps:

[0105] Select and confirm the function;

[0106] Judge whether the stew pot 21 is placed;

[0107] Control the stepping motor to rotate forward;

[0108] Judge whether the top cover 23 is covered. If the top cover 23 is not covered, control the stepping motor to rotate backward and then stop;

[0109] If the top cover 23 is covered, control the electromagnetic pump 102 to start;

[0110] Detect whether there is water in the water inlet pipe through the water flow sensor 42. If there is no water, control the electromagnetic pump 102 to start again after 10 s;

[0111] If there is water, control the steam generator 104 to start;

[0112] Control the cooling fan to start;

[0113] Control the third solenoid valve 111 to open;

[0114] Adding steam into the stew pot 22 includes the following steps:

[0115] Control the stew pot heating module 5 to start to heat the stew pot 21;

[0116] Control the second solenoid valve 108 to open and the third solenoid valve 111 to close, so as to add water to the stew pot 22;

[0117] Change the power of the steam generator 104;

[0118] The second solenoid valve 108 is closed and the third solenoid valve 111 is closed;

[0119] The first temperature sensor NTC305 detects the real-time steam temperature in the condensation water path;

[0120] If the real-time steam temperature is lower than the set temperature, change the power of the steam generator 104;

[0121] If the real-time steam temperature is higher than the set temperature, control the first solenoid valve 304 to start;

[0122] Closing the condensation water path, the micro-pressure stewing includes the following steps:

[0123] Control the first solenoid valve 304 to start;

[0124] Adjust the heating power of the steam generator 104 and the stew pot heating module 5;

[0125] Detect the real-time steam temperature in the condensation water path through the first temperature sensor NTC305;

[0126] When the real-time steam temperature is lower than the steam temperature threshold, control the first solenoid valve 304 to start; when the real-time steam temperature is higher than the steam temperature threshold, control the first solenoid valve 304 to close;

[0127] The heating is completed.

[0128] Control the electromagnetic pump, the steam generator and the solenoid valve to close.

[0129] In some embodiments, it further includes the following steps:

[0130] After the stewing is completed, drain the water in the stew pot through the drain pipe;

[0131] Close the condensation pipeline through the first solenoid valve, and close the water inlet pipeline through the second solenoid valve and the third solenoid valve;

[0132] Extract the air in the stew pot assembly through the drainage pipeline to create a vacuum state in the stew pot assembly;

[0133] When the ingredients in the stew cup do not need to be eaten immediately, create a vacuum state in the stew pot assembly to achieve the purpose of extending the shelf life of the ingredients.

[0134] A control method for a fully automatic micro-pressure stewing machine provided in this embodiment has the following working principle:

[0135] (1) Use an electromagnetic pump to pump water. After passing through the steam generator, the solenoid valve distributes the water flow direction to decide whether to add water to the stew cup or the stew pot.

[0136] (2) The water added to the stew cup is added from the upper part of the stew cup, and the water added to the stew pot is injected from the bottom of the stew pot.

[0137] (3) The water temperature is controlled by the power of the steam generator and the flow rate of the electromagnetic pump adjusted by the program, and can be divided into normal temperature water, water at a specified temperature, and steam at a specified temperature.

[0138] (4) The water addition amount is controlled by adjusting the flow rate of the electromagnetic pump by the program or in cooperation with a flow meter.

[0139] (5) Drainage is sucked out from the bottom of the stew pot by a water pump. The flow direction of the sucked water is controlled by the second solenoid valve to decide whether to drain it to the outside of the automatic stewing machine or into the water storage box inside the machine.

[0140] The above are only some embodiments of the present invention. For those of ordinary skill in the art, without departing from the inventive concept of the present invention, several modifications and improvements can still be made, and these all belong to the protection scope of the present invention.

Claims

1. A fully automatic micro-pressure stewing machine, characterized in that, Comprising: A housing assembly (1), within which a water circuit system is provided. The water circuit system includes a water inlet pipe, a drain pipe, and a condensation water circuit. The housing assembly (1) includes a base portion and a body portion, and the body portion is disposed on the base portion; A stew pot assembly (2), which can be placed on the base portion. The stew pot assembly (2) includes a stew pot (21) and a stewing cup (22). The stewing cup (22) can be placed into the stew pot (21) from the top of the stew pot (21). A top cover (23) is provided on the top of the stewing cup (22), and a through hole (230) is formed at the center of the top cover (23). A stew pot heating module (5) is provided on the base portion for heating the stew pot (21); A water adding mechanism (3), which is disposed above the stew pot assembly (2) and on the body portion; The water inlet pipe is used for heating external water and adding hot water or normal temperature water or steam into the stewing cup (22) through the water adding mechanism (3) via the through hole (230), and injecting hot water or normal temperature water into the stew pot (21); The drain pipe is used for discharging the water in the stew pot (21) out of the stewing machine or storing it in a water storage box (41) within the housing assembly (1); When the condensation water circuit is opened, the steam in the stewing cup (22) can enter the condensation water circuit through the through hole (230) and the water adding mechanism (3), and be discharged out through the condensation water circuit; When the condensation water circuit is closed, a micro-pressure state can be formed within the stewing cup (22); The water adding mechanism (3) includes a housing assembly (31) and a water adding head (32) disposed on the housing assembly (31). A driving device (51) is provided on the housing assembly (1) for driving the water adding mechanism (3) to lift. At least a first channel (321) and a second channel (322) are provided on the water adding head (32). The first channel (321) is communicated with the water inlet pipe, and the second channel (322) is communicated with the condensation water circuit. The first channel (321) and the second channel (322) are evenly distributed within the inner diameter range of the through hole (230); The condensation water circuit includes a pressure protection pipe and a pressure relief pipe. The pressure protection pipe includes a first discharge pipe (301), a steam heat dissipation pipe (302), a second discharge pipe (303), and a first electromagnetic valve (304) connected in sequence. A first temperature sensor (305) is provided between the second channel (322) and the first discharge pipe (301). One outlet of the first electromagnetic valve (304) is connected to a third discharge pipe (306); The pressure relief pipe includes a fourth discharge pipe (307). The other outlet of the first electromagnetic valve (304) is connected to the fourth discharge pipe (307). A mechanical first one-way pressure valve (308) is provided on the fourth discharge pipe (307); The steam heat dissipation pipe (302) is spirally arranged, and a heat dissipation fan (309) is provided within the steam heat dissipation pipe (302).

2. The fully automatic micro-pressure stewing machine according to claim 1, characterized in that, A third channel (323) is provided on the water inlet head (32). The pressure relief pipeline further includes a fifth discharge pipe (310). The third channel (323) is connected to the fifth discharge pipe (310). A mechanical second one-way pressure valve (311) is provided between the third channel (323) and the fifth discharge pipe (310). The opening pressure of the second one-way pressure valve (311) is greater than the opening pressure of the first one-way pressure valve (308). The control system of the stewing machine is electrically connected to the first temperature sensor (305) and the first electromagnetic valve (304) respectively. The control system controls the operation of the stewing machine according to a preset program so as to form a micro-pressure state or complete exhaust pressure relief in the stewing pot (22).

3. The fully automatic micro-pressure stewing machine according to claim 2, characterized in that, A pressure relief channel (231) is provided on the top cover (23). The pressure relief channel (231) is communicated with the internal space of the stewing pot (22). A steel ball (232) is provided in the pressure relief channel (231). A spring (233) is provided on the steel ball (232). The spring (233) presses on the steel ball (232) to block the air inlet (2310) of the pressure relief channel (231). When the pressure in the stewing pot (22) is greater than a preset pressure threshold, the steel ball (232) can overcome the elastic force of the spring (233) and open the air inlet (2310) of the pressure relief channel (231). The steam in the stewing pot (22) can be discharged out through the pressure relief channel (231). The opening pressure of the pressure relief channel (231) is greater than the opening pressure of the second one-way pressure valve (311).

4. An automatic micro-pressure stewing machine according to claim 1, 2 or 3, characterized in that, The water inlet pipeline includes a first connecting pipe (101), an electromagnetic pump (102), a second connecting pipe (103), a steam generator (104), a third connecting pipe (105), a second temperature sensor (106), a fourth connecting pipe (107) and a second electromagnetic valve (108) connected together in sequence. The fourth connecting pipe (107) is connected to the water inlet of the second electromagnetic valve (108). One of the outlets of the second electromagnetic valve (108) is connected to a fifth connecting pipe (109). The fifth connecting pipe (109) is used to inject hot water or normal temperature water or steam into the top of the stewing pot (22). A water flow sensor (42) is provided on the first connecting pipe (101). The water inlet pipeline further includes a sixth connecting pipe (110), a third electromagnetic valve (111), a seventh connecting pipe (112), an eighth connecting pipe (113) and a three-way pipe (202). One end of the sixth connecting pipe (110) is connected to the other outlet of the second electromagnetic valve (108), and the other end is connected to the water inlet end of the third electromagnetic valve (111). One of the outlets of the third electromagnetic valve (111) is connected to the three-way pipe (202) through the seventh connecting pipe (112), and the other outlet drains water to the water storage box (41) through the eighth connecting pipe (113).

5. The fully automatic micro-pressure stewing machine according to claim 4, wherein The drainage pipeline includes a ninth connecting pipe (201), a tee pipe (202), a first water pump (203), a tenth connecting pipe (204), a drain pipe (205) and a second water pump (206). One end of the ninth connecting pipe (201) is used to connect with the water inlet connecting structure (210) at the bottom of the stew pot (21), and the other end is connected to the first interface (2021) of the tee pipe (202). The second interface (2022) of the tee pipe (202) is connected to the seventh connecting pipe (112). The third interface (2023) of the tee pipe (202) discharges water to the water storage box (41) through the tenth connecting pipe (204). The first water pump (203) is arranged on the tenth connecting pipe (204). The shown drain pipe (205) is used to drain the water in the water storage box (41) outwards, and the second water pump (206) is arranged on the drain pipe (205).

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