Steam system and control method

Abstract

The invention provides a steam system and a control method, the steam system comprises a steam generator and an inner container, and the steam generator is used for generating steam; the steam pipe fitting is arranged on the inner container in a penetrating mode, and one end of the steam pipe fitting is connected with the steam generator; the flow blocking piece is arranged at the other end of the steam pipe fitting, at least part of the flow blocking piece and a steam outlet of the steam pipe fitting are opposite and arranged in a spaced mode, a flow blocking channel is defined by the flow blocking piece and at least part of the steam pipe fitting, and the flow blocking channel is communicated with a cavity of the inner container. And steam in the steam pipe fitting passes through the flow blocking channel and then enters the cavity of the inner container. By means of the technical scheme, the technical problem that in the prior art, noise of a steam system is large can be solved.

Description

Technical Field

[0001] The present invention relates to the technical field of steam systems, and in particular to a steam system and a control method. Background Art

[0002] At present, most built-in steam ovens on the market use boiling water steam generators, but boiling water steam generators have obvious disadvantages, such as high power, high energy consumption, and a lot of condensed water in the inner tank after steaming. Instant steam generators can just solve these problems.

[0003] However, the instant steam generator also has obvious shortcomings. When the instant steam generator is working, the high-temperature and high-pressure steam generated by the steam generator will cause impact or disturbance to the surrounding air during the process of ejecting the high-temperature and high-pressure steam into the atmosphere, thereby generating relatively large jet noise, which will affect the user's experience to a certain extent. Summary of the invention

[0004] The main purpose of the present invention is to provide a steam system and a control method to solve the technical problem of high noise in the steam system in the prior art.

[0005] In order to achieve the above object, according to one aspect of the present invention, a steam system is provided, comprising:

[0006] A steam generator and an inner container, wherein the steam generator is used to generate steam;

[0007] A steam pipe fitting is passed through the inner tank, and one end of the steam pipe fitting is connected to the steam generator;

[0008] A flow-blocking member is arranged at the other end of the steam pipe, at least a portion of the flow-blocking member is opposite to and spaced from the steam outlet of the steam pipe, a flow-blocking channel is formed between the flow-blocking member and at least a portion of the steam pipe, and the flow-blocking channel is connected to the cavity of the inner liner, so that the steam in the steam pipe enters the cavity of the inner liner after passing through the flow-blocking channel.

[0009] Furthermore, the flow blocking member includes an annular shell, which is sleeved on the other end of the steam pipe, a part of the annular shell is connected to the steam pipe, and the other part of the annular shell is spaced from and arranged opposite to the steam outlet to enclose the flow blocking channel.

[0010] Furthermore, the flow blocking member also includes an end plate, which is connected to the annular shell and located at the end of the annular shell, and the end plate is arranged opposite to one end of the flow blocking channel to block the one end of the flow blocking channel.

[0011] Furthermore, the annular housing has a first port and a second port that are arranged opposite to each other, the first port is sleeved on the other end of the steam pipe, and the second port is located at the end of the other end of the steam pipe;

[0012] Wherein, the end plate is arranged at the first port, the end plate is an annular plate structure, the inner ring of the end plate is adapted to the shape of the steam pipe fitting to block the gap between the annular shell and the steam pipe fitting, so that the steam in the blocking channel flows out through the second port; or,

[0013] The end plate is arranged at the second port and blocks the second port so that the steam in the blocking channel flows out through the first port.

[0014] Further, the first port is located on a side of the second port close to the inner liner wall of the inner liner; and / or,

[0015] The steam pipe fitting includes a steam inlet pipe and a steam joint that are connected to each other. The steam joint is passed through the inner tank. The steam inlet pipe is detachably connected to the steam joint. The steam inlet pipe is arranged outside the inner tank. An end of the steam inlet pipe away from the steam joint forms one end of the steam pipe fitting, and an end of the steam joint away from the steam inlet pipe forms the other end of the steam pipe fitting.

[0016] Furthermore, a spoiler protrusion is provided on another part of the annular shell, and the spoiler protrusion is provided protruding from a side of the annular shell close to the steam outlet.

[0017] Furthermore, the steam pipe includes a steam joint, which is inserted into the inner liner, and a first external thread and a steam outlet are provided at a portion of the steam joint located in the inner liner. The steam outlet and the first external thread are arranged at annular intervals along the portion of the steam joint located in the inner liner, and a first internal thread matched with the first external thread is provided on the baffle, and the baffle is connected to the portion of the steam joint located in the inner liner by threads.

[0018] Further, the portion of the steam joint located in the inner tank comprises an avoidance surface and a matching surface connected to each other along the annular outer edge of the steam joint, the avoidance surface is opposite to at least part of the flow blocking member and is arranged at intervals, the avoidance surface is provided with the steam outlet, and the matching surface is provided with the first external thread;

[0019] There are at least two avoidance surfaces, at least two of which are spaced apart along the annular outer edge of the steam joint, there are at least two matching surfaces, one matching surface is provided between two adjacent avoidance surfaces, each of the avoidance surfaces is provided with the steam outlet, and each of the matching surfaces is provided with the first external thread; or

[0020] There are two avoidance surfaces, which are spaced apart along the annular outer edge of the steam joint; there are two mating surfaces, which are arranged between the two avoidance surfaces; each of the avoidance surfaces is provided with the steam outlet; each of the mating surfaces is provided with the first external thread; and the two avoidance surfaces and the two mating surfaces are connected to form a waist-shaped outer edge.

[0021] Furthermore, the steam system further comprises:

[0022] A sealing member is arranged between the steam pipe and the inner container.

[0023] Furthermore, a limited position protrusion is provided on the steam pipe, and the steam system further comprises:

[0024] An adjusting member, wherein the adjusting member is adjustably arranged on the steam pipe member along the extension direction of the steam pipe member and is spaced apart from the limiting protrusion, the adjusting member is arranged to protrude from the outer edge of the steam pipe member, the sealing member is arranged between the limiting protrusion and the adjusting member, and the two ends of the sealing member are respectively used to contact the limiting protrusion and the adjusting member.

[0025] According to another aspect of the present invention, a control method is provided, which is applicable to the steam system provided above, and the control method comprises:

[0026] adding initial water into a steam generator of the steam system;

[0027] The steam generator is controlled to enter a heating cycle process, and the working condition of the steam generator and / or the water addition condition of the steam generator are controlled according to the temperature of the steam generator in the heating cycle process, so that the steam generated by the steam generator is heated to enter the cavity of the inner tank of the steam system.

[0028] Furthermore, the controlling of the working condition of the steam generator and / or the water adding condition of the steam generator according to the temperature of the steam generator in the heating cycle process includes:

[0029] Starting the steam generator;

[0030] obtaining the temperature of the steam generator;

[0031] When the temperature of the steam generator is greater than or equal to a first preset temperature, the steam generator is controlled to stop working and supplementary water is added into the steam generator;

[0032] When the temperature of the steam generator is lower than the first preset temperature, the steam generator is controlled to continue to operate.

[0033] Further, the adding initial water into the steam generator of the steam system includes: making the water inflow of the initial water in the steam generator a first water inflow;

[0034] The adding of supplementary water into the steam generator comprises: making the water inflow of the supplementary water into the steam generator a second water inflow;

[0035] Wherein, the second water inflow is greater than the first water inflow.

[0036] Further, the adding of initial water into the steam generator of the steam system includes: controlling the first preset time length for water to be introduced into the steam generator;

[0037] The adding of supplementary water into the steam generator comprises: controlling the water to be introduced into the steam generator for a second preset time period;

[0038] Among them, the first preset time length is shorter than the second preset time length.

[0039] Further, the first preset temperature is between 120° C. and 200° C.; and / or,

[0040] The first preset duration is between 1 second and 3 seconds; and / or,

[0041] The second preset time length is between 2s and 4s.

[0042] Furthermore, the control method further includes:

[0043] Obtaining the temperature of the cavity of the liner;

[0044] The working condition of the heating element for heating the cavity of the inner container is controlled according to the temperature of the cavity of the inner container.

[0045] Further, the controlling the working condition of the heating element for heating the cavity of the liner according to the temperature of the cavity of the liner includes:

[0046] When the cavity temperature of the inner tank is less than or equal to a second preset temperature, controlling the heating element to operate at a first operating frequency;

[0047] When the temperature of the cavity of the inner tank is greater than the second preset temperature, the heating element is controlled to operate at a second operating frequency.

[0048] Further, controlling the heating element to operate at the first operating frequency includes: controlling the heating element to operate continuously; and / or,

[0049] The controlling the heating element to operate at the second operating frequency includes: controlling the heating element to operate intermittently.

[0050] Further, controlling the heating element to operate at a second operating frequency includes:

[0051] The heating element is controlled to work intermittently with a duty ratio of 12:48.

[0052] By applying the technical solution of the present invention, the steam in the steam pipe flows from one end of the steam pipe to the other end of the steam pipe through the setting of the flow blocker. When the steam flows out from the other end of the steam pipe, it will enter the flow blocking channel. Since at least part of the flow blocker is opposite to the steam outlet of the steam pipe and is arranged at intervals, the steam flowing out from the other end of the steam pipe can be blocked and noise-reduced before entering the cavity of the inner tank. In addition, through the corresponding control method, it can be ensured that the steam generator has some initial water before starting the work, so that the intensity of steam generation of the steam generator will be much smaller, thereby reducing the situation where the steam generator causes high noise due to the intense steam generation, and reducing the noise of the steam system during use. BRIEF DESCRIPTION OF THE DRAWINGS

[0053] The drawings constituting a part of the present application are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0054] Figure 1 A structural schematic diagram of a steam system provided according to an embodiment of the present invention from one perspective is shown;

[0055] Figure 2 A schematic structural diagram of a steam system according to another perspective of an embodiment of the present invention is shown;

[0056] Figure 3 A partial enlarged schematic diagram of a steam system provided according to an embodiment of the present invention is shown;

[0057] Figure 4 A partial cross-sectional view of a steam system provided according to an embodiment of the present invention is shown;

[0058] Figure 5An exploded view of a steam joint and a flow blocker provided according to an embodiment of the present invention is shown;

[0059] Figure 6 A flow chart of a control method provided according to an embodiment of the present invention is shown.

[0060] The above drawings include the following reference numerals:

[0061] 1. Clean water tank; 2. First water inlet pipe; 3. Solenoid valve; 4. Water outlet pipe; 5. Top heating pipe; 6. Main board; 7. Back fan;

[0062] 8. Steam generator; 9. Temperature sensing package; 10. Water inlet pump; 11. Heating element; 12. Second water inlet pipe; 13. Temperature sensing needle;

[0063] 14. Steam inlet pipe;

[0064] 15. steam joint; 151. avoidance surface; 152. matching surface; 153. limiting protrusion;

[0065] 16. Adjustment member; 17. Sealing member; 18. Inner liner; 19. Baffle;

[0066] 20, flow-blocking member; 201, annular housing; 2011, first port; 2012, spoiler protrusion; 202, end plate;

[0067] 21. Steam;

[0068] 22. Cavity;

[0069] 23. Steam outlet;

[0070] 24. Temperature sensor. DETAILED DESCRIPTION

[0071] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0072] like Figures 1 to 5 As shown, one embodiment of the present invention provides a steam system, which includes: a steam generator 8, an inner tank 18, a steam pipe and a flow blocker 20, wherein the steam generator 8 is used to generate steam 21. The steam pipe is passed through the inner tank 18, and one end of the steam pipe is connected to the steam generator 8; the flow blocker 20 is arranged at the other end of the steam pipe, and at least a portion of the flow blocker 20 is opposite to and spaced from the steam outlet 23 of the steam pipe, and a flow blocker channel is formed between the flow blocker 20 and at least a portion of the steam pipe, and the flow blocker channel is connected to the cavity 22 of the inner tank 18, so that the steam 21 in the steam pipe enters the cavity 22 of the inner tank 18 after passing through the flow blocker channel.

[0073] With the steam system provided in this embodiment, the steam 21 in the steam pipe flows from one end of the steam pipe to the other end of the steam pipe through the setting of the flow blocker 20. When the steam 21 flows out from the other end of the steam pipe, it will enter the flow blocking channel. Since at least part of the flow blocker 20 is opposite to the steam outlet 23 of the steam pipe and is arranged at intervals, the steam 21 flowing out from the other end of the steam pipe can be blocked and noise-reduced before entering the cavity 22 of the inner tank 18. The above structure can facilitate the effective flow blocking of the steam 21 and reduce the noise of the steam 21 entering the inner tank 18, thereby effectively achieving a noise reduction effect. Therefore, the steam system provided in this embodiment can solve the technical problem of high noise in the steam system in the prior art.

[0074] Specifically, the steam generator 8 in this embodiment can be an instant steam generator 8, the steam system can be a steam box or a steam oven, and the cavity 22 of the inner pot 18 can be used to place food to be steamed. The steam 21 generated by the steam generator 8 is mainly high-temperature and high-pressure steam 21.

[0075] In this embodiment, the flow blocker 20 includes an annular shell 201, which is sleeved on the other end of the steam pipe, a part of the annular shell 201 is connected to the steam pipe, and another part of the annular shell 201 is spaced from and arranged opposite to the steam outlet 23 to form a flow blocking channel. In this way, the annular shell 201 is arranged to effectively block the steam 21 flowing out of the steam outlet 23, reduce the intensity of the steam 21, and thus facilitate better noise reduction.

[0076] In this embodiment, the flow blocker 20 further includes an end plate 202, which is connected to the annular shell 201 and is located at the end of the annular shell 201. The end plate 202 is arranged opposite to one end of the flow blocking channel to block one end of the flow blocking channel. With such an arrangement, it is convenient to further block and reduce the noise of the steam 21 through the end plate 202, reduce the situation of violent impact or disturbance when the steam 21 flows out to the cavity 22 of the inner tank 18, and improve the noise reduction effect of the steam 21.

[0077] Specifically, in this embodiment, the annular shell 201 has a first port 2011 and a second port that are arranged opposite to each other. The first port 2011 is sleeved on the other end of the steam pipe, and the second port is located at the end of the other end of the steam pipe.

[0078] The end plate 202 is disposed at the first port 2011, and the end plate 202 is an annular plate structure, and the inner ring of the end plate 202 is adapted to the shape of the steam pipe to block the gap between the annular shell 201 and the steam pipe, so that the steam 21 in the flow blocking channel flows out through the second port. In this way, the noise of the steam 21 is better reduced and the flow blocking effect of the steam 21 is improved.

[0079] Alternatively, the end plate 202 is disposed at the second port, and the second port is blocked so that the steam 21 in the blocking channel flows out through the first port 2011. In this way, the steam 21 can be effectively reduced in drag and noise.

[0080] Specifically, the first port 2011 is located on the side of the inner liner 18 wall of the second port close to the inner liner 18. Specifically, such a setting is combined with the setting of the end plate 202 at the second port, so that the steam 21 flows toward the side of the inner liner 18 wall of the inner liner 18 after flowing out from the first port 2011, and then disperses into the cavity 22 of the inner liner 18, so that part of the steam 21 will first contact the inner liner 18 wall of the inner liner 18, and the inner liner 18 wall can also better reduce the noise of the steam 21 to a certain extent, improve the flow resistance effect on the steam 21, and reduce the intensity of the steam 21.

[0081] Specifically, the steam pipe fitting includes a steam inlet pipe 14 and a steam joint 15 connected to each other, the steam joint 15 is passed through the inner liner 18, the steam inlet pipe 14 is detachably connected to the steam joint 15, the steam inlet pipe 14 is arranged outside the inner liner 18, the end of the steam inlet pipe 14 away from the steam joint 15 forms one end of the steam pipe fitting, and the end of the steam joint 15 away from the steam inlet pipe 14 forms the other end of the steam pipe fitting. In this way, the steam inlet pipe 14 and the steam joint 15 can be disassembled and assembled, and maintenance and repair are convenient.

[0082] In this embodiment, a spoiler protrusion 2012 is provided on another part of the annular shell 201, and the spoiler protrusion 2012 is provided protruding from one side of the annular shell 201 close to the steam outlet 23. In this way, the flow blocking effect on the steam 21 is improved and the noise is better reduced.

[0083] In this embodiment, the steam pipe includes a steam joint 15, which is inserted into the inner liner 18. The portion of the steam joint 15 located in the inner liner 18 is provided with a first external thread and a steam outlet 23. The steam outlet 23 and the first external thread are arranged at intervals along the circumferential direction of the portion of the steam joint 15 located in the inner liner 18. The flow blocker 20 is provided with a first internal thread matched with the first external thread, and the flow blocker 20 is connected to the portion of the steam joint 15 located in the inner liner 18 through threads. In this way, it is convenient to ensure that the flow blocker 20 is connected to the portion of the steam joint 15 located in the inner liner 18, and the spoiler protrusion 2012 can be effectively formed by the portion of the first internal thread that is not matched with the flow blocker 20, so as to ensure the flow blocking effect through the spoiler protrusion 2012 and better reduce noise.

[0084] Specifically, the portion of the steam connector 15 located inside the inner tank 18 includes an avoidance surface 151 and a mating surface 152 that are interconnected along the annular outer edge of the steam connector 15. The avoidance surface 151 is opposite to and spaced apart from at least a portion of the baffle 20. The avoidance surface 151 is provided with a steam outlet 23, and the mating surface 152 is provided with a first external thread.

[0085] There are at least two avoidance surfaces 151, which are arranged at intervals along the annular outer edge of the steam joint 15, and there are at least two matching surfaces 152, with one matching surface 152 arranged between two adjacent avoidance surfaces 151. Each avoidance surface 151 is provided with a steam outlet 23, and each matching surface 152 is provided with a first external thread. In this way, the connection stability can be ensured, the steam 21 can be effectively discharged, and the noise of the steam 21 can be reduced and the resistance can be increased.

[0086] Specifically, there are two avoidance surfaces 151, which are spaced apart along the annular outer edge of the steam joint 15, there are two mating surfaces 152, one mating surface 152 is disposed between the two avoidance surfaces 151, each avoidance surface 151 is provided with a steam outlet 23, each mating surface 152 is provided with a first external thread, and the two avoidance surfaces 151 and the two mating surfaces 152 are connected to form a waist-shaped outer edge. In this way, it is convenient to ensure the connection stability, and it is convenient to effectively discharge the steam 21, and reduce the noise of the steam 21 and increase the resistance. In addition, the shape of the steam joint 15 is optimized.

[0087] In this embodiment, the steam system further includes a seal 17 , which is disposed between the steam pipe and the inner liner 18 to ensure a sealing effect at the steam pipe passing through the inner liner 18 .

[0088] Specifically, the sealing member 17 may be a sealing gasket.

[0089] Specifically, the steam pipe is provided with a limit protrusion 153, and the steam system further comprises an adjusting member 16, which is adjustably arranged on the steam pipe along the extension direction of the steam pipe and spaced from the limit protrusion 153, the adjusting member 16 is arranged to protrude from the outer edge of the steam pipe, and the sealing member 17 is arranged between the limit protrusion 153 and the adjusting member 16, and the two ends of the sealing member 17 are respectively used to contact the limit protrusion 153 and the adjusting member 16. In this way, the stability of the setting of the sealing member 17 is ensured, and the sealing effect of the sealing member 17 is ensured.

[0090] Specifically, the adjusting member 16 is an adjusting nut, which is provided with a second internal thread, and the steam pipe is provided with a second external thread that matches the second internal thread. The position of the adjusting member 16 on the steam pipe can be adjusted by matching the second internal thread and the second external thread.

[0091] Specifically, a baffle 19 is provided on one side of the inner liner 18 close to the cavity 22, a limiting hole is provided on the baffle 19, the steam pipe is passed through the limiting hole, the limiting protrusion 153 is located on the side of the limiting hole away from the cavity 22, and the limiting protrusion 153 protrudes from the limiting hole to limit the insertion position of the steam pipe, avoid the situation where the steam pipe is fully inserted into the cavity 22 of the inner liner 18, and facilitate the limiting and operation of the steam pipe. Specifically, the steam connector 15 of the steam pipe is passed through the limiting hole, and the limiting protrusion 153 is provided at the outer edge of the steam connector 15 and protrudes from the outer edge of the steam connector 15.

[0092] When the high-temperature and high-pressure steam 21 generated by the instant steam generator 8 passes through the steam inlet pipe 14, the steam joint 15, and enters the cavity 22 of the inner tank 18, a pressure reducing nut (blocking member 20) is arranged at the outlet end of the steam joint 15 where the steam 21 exits. The high-temperature and high-pressure steam 21 needs to pass through the flat notch (steam outlet 23) of the steam outlet joint 15 and the gap between the steam outlet joint 15 and the pressure reducing nut thread. Since the high-temperature and high-pressure steam 21 is blocked by the pressure reducing nut thread layer by layer, the impact of the high-temperature and high-pressure steam 21 on the surrounding air when entering the cavity 22 of the inner tank 18 is reduced, thereby reducing the generation of noise during steaming.

[0093] The steam system in this embodiment also includes a clean water tank 1, a first water inlet pipe 2, a water outlet pipe 4, a top heating pipe 5, a main board 6, a temperature sensing package 9, a second water inlet pipe 12 and a temperature sensing needle 13.

[0094] like Figure 6 As shown, another embodiment of the present invention provides a control method, which is applicable to the steam system provided above, and the control method is used to control the steam system. The control method includes: adding initial water to the steam generator 8 of the steam system; controlling the steam generator 8 to enter a heating cycle process, controlling the working condition of the steam generator 8 and / or the water addition condition of the steam generator 8 according to the temperature of the steam generator 8 in the heating cycle process, and allowing the steam 21 generated by the steam generator 8 to enter the cavity 22 of the inner tank 18 of the steam system.

[0095] By adopting the control method provided in this embodiment, it is possible to ensure that the steam generator 8 has some initial water before starting the work, so that the intensity of the steam 21 generated by the steam generator 8 is much smaller, thereby reducing the situation where the steam generator 8 causes a large noise due to the intense generation of steam 21, and reducing the noise of the steam system during use. Therefore, the technical solution provided in this embodiment can solve the technical problem of large noise in the instant steam system in the prior art.

[0096] In this embodiment, the working condition of the steam generator 8 and / or the water addition condition of the steam generator 8 are controlled according to the temperature of the steam generator 8 in the heating cycle process, including: starting the steam generator 8; obtaining the temperature of the steam generator 8; when the temperature of the steam generator 8 is greater than or equal to the first preset temperature, controlling the steam generator 8 to stop working and adding supplementary water to the steam generator 8; when the temperature of the steam generator 8 is less than the first preset temperature, controlling the steam generator 8 to continue working. By adopting such a method, it is convenient to always keep water in the steam generator 8, thereby effectively reducing the intensity of the steam 21 generated in the steam generator 8, and relatively slowly gasifying and generating steam 21, thereby reducing noise.

[0097] Specifically, adding initial water to the steam generator 8 of the steam system includes: making the water inflow of the initial water in the steam generator 8 a first water inflow; adding supplementary water to the steam generator 8 includes: making the water inflow of the supplementary water in the steam generator 8 a second water inflow; wherein the second water inflow is greater than the first water inflow. In this way, the situation where the water in the steam generator 8 is exhausted can be avoided, so as to better adapt to the situation where the temperature of the steam generator 8 rises after startup, resulting in more water consumption, and effectively reduce the intensity of the generation of steam 21 in the steam generator 8.

[0098] Specifically, adding initial water to the steam generator 8 of the steam system includes: controlling the first preset time for water to enter the steam generator 8; adding supplementary water to the steam generator 8 includes: controlling the second preset time for water to enter the steam generator 8; wherein the first preset time is less than the second preset time. In this way, the situation where the water in the steam generator 8 is exhausted can be avoided, so as to better adapt to the situation where the temperature of the steam generator 8 rises after startup, resulting in more water consumption, and effectively reduce the intensity of the generation of steam 21 in the steam generator 8.

[0099] Specifically, the first preset temperature is between 120°C and 200°C, so that the first preset temperature is within the above reasonable range, avoiding the situation where the first preset temperature is too high and the water in the steam generator 8 is exhausted, and avoiding the situation where the first preset temperature is too low and the steam 21 cannot be effectively generated.

[0100] The first preset time is between 1s and 3s to ensure sufficient water intake.

[0101] The second preset time is between 2s and 4s to ensure sufficient water intake.

[0102] In this embodiment, the control method further includes: obtaining the temperature of the cavity 22 of the inner pot 18; and controlling the working condition of the heating element 11 for heating the cavity 22 of the inner pot 18 according to the temperature of the cavity 22 of the inner pot 18. By adopting such a method, it is possible to more reasonably control the working condition of the heating element 11, so as to better adjust and control the temperature of the inner pot 18.

[0103] Specifically, the heating element 11 may be a bottom heating tube.

[0104] Specifically, the working condition of the heating element 11 for heating the cavity 22 of the inner liner 18 is controlled according to the temperature of the cavity 22 of the inner liner 18, including: when the temperature of the cavity 22 of the inner liner 18 is less than or equal to the second preset temperature, the heating element 11 is controlled to work at the first operating frequency; when the temperature of the cavity 22 of the inner liner 18 is greater than the second preset temperature, the heating element 11 is controlled to work at the second operating frequency. In this way, it is convenient to effectively ensure that the temperature of the cavity 22 of the inner liner 18 meets the operating requirements, and it is also possible to avoid excessive energy waste, so as to ensure the effective heating of the object in the cavity 22 of the inner liner 18.

[0105] Specifically, controlling the heating element 11 to operate at the first operating frequency includes: controlling the heating element 11 to operate continuously, so as to ensure that the temperature of the cavity 22 of the inner tank 18 is rapidly increased.

[0106] Specifically, controlling the heating element 11 to operate at the second operating frequency includes: controlling the heating element 11 to operate intermittently to prevent the cavity 22 of the inner tank 18 from rising too much and exceeding the use demand, thereby effectively saving energy.

[0107] In this embodiment, controlling the heating element 11 to work at the second operating frequency includes: controlling the heating element 11 to work intermittently at a duty ratio of 12:48. At this time, the steam system enters the temperature maintenance stage, and the bottom heating element 11 works at a duty ratio of 12:48 to ensure that the temperature in the cavity 22 of the inner pot 18 meets the temperature deviation requirements specified by the set temperature standard, and the balance between the condensed water at the bottom of the inner pot 18 and the cooking effect of the food.

[0108] like Figure 6As shown, the specific control process of the above control method is: when the user sets the cooking mode, time, and temperature, and clicks to start, the solenoid valve 3 and the back fan 7 are turned on, the steam oven enters the heating stage, and the water inlet pump 10 pumps water to the instant steam generator 8. The first water adding time of the water inlet pump 10 is: 2S, and then the instant steam generator 8 starts to work. When the temperature sensing needle 13 detects that the temperature of the steam generator 8 reaches: 160°C, it stops working, and the water inlet pump 10 pumps water again. After the first cycle, due to the relatively high temperature of the instant steam generator 8, a certain amount of water will be consumed, and the pumping time is 3S, which is a cycle; at the same time, the bottom heating pipe starts to work full-time, so that the temperature inside the cavity 22 of the inner tank 18 can be quickly heated up, and then the condensation at the bottom of the cavity 22 of the inner tank 18 is evaporated to reduce the condensation of water at the bottom of the cavity 22 of the inner tank 18 during the steaming process. Specifically, when the temperature sensor 24 detects the temperature inside the cavity 22 of the inner pot 18 and reaches the set temperature (specifically, the set temperature can be a temperature less than or equal to the maximum temperature, which can be T-5°C, where T is the maximum temperature), the bottom heating tube stops working full-time, and the steam oven enters the temperature maintenance stage. The bottom heating tube works with a duty cycle of 12:48, and the working procedures of the water inlet pump 10 and the instant steam generator 8 are consistent with the heating stage; when the working time set by the user is reached, the solenoid valve 3, the back fan 7, the water inlet pump 10, and the instant steam generator 8 stop working, and cooking is completed.

[0109] Specifically, when the steam oven enters the temperature maintenance stage, the bottom heating tube operates at a duty cycle of 12:48, which can ensure that the temperature in the cavity 22 of the inner pot 18 meets the temperature deviation requirements specified by the set temperature standard, and the balance between the condensed water at the bottom of the inner pot 18 and the cooking effect of the food.

[0110] Specifically, when steaming with the steam oven of this embodiment, a certain amount of water is first added to the instant steam generator 8, and then the instant steam generator 8 is operated. Compared with first operating the instant steam generator 8 and then adding water to the instant steam generator 8, the intensity of instant evaporation of water is much less, thereby reducing the noise of the instant steam generator 8 when working from a procedural aspect.

[0111] Specifically, when the bottom heating tube is working, the temperature inside the cavity 22 of the inner pot 18 can be quickly heated up. At the same time, the bottom heating tube can also evaporate the condensation at the bottom of the cavity 22 of the inner pot 18 to reduce condensation at the bottom of the cavity 22 of the inner pot 18 during the steaming process.

[0112] Specifically, when the temperature sensor 24 detects the temperature inside the cavity 22 of the inner pot 18 and reaches the set temperature (specifically, the set temperature can be a temperature less than or equal to the maximum temperature, which can be T-5°C, where T is the maximum temperature), the bottom heating tube stops working full-time, and the steam oven enters the temperature maintenance stage. The bottom heating tube works with a duty cycle of 12:48, and the working procedures of the water inlet pump 10 and the instant steam generator 8 are consistent with the heating stage; when the working time set by the user is reached, the solenoid valve 3, the back fan 7, the water inlet pump 10, and the instant steam generator 8 stop working, and cooking is completed.

[0113] When steaming in the steam oven, a certain amount of water is first added into the instant steam generator 8, and then the instant steam generator 8 works. Compared with first adding water into the instant steam generator 8 and then into the instant steam generator 8, the intensity of instant evaporation of water is much less, which reduces the noise of the instant steam generator 8 when working from the process aspect.

[0114] Another embodiment of the present invention provides a steam system, comprising: a water adding module, configured to add initial water to the steam generator 8 of the steam system; a heating module, configured to control the steam generator 8 to enter a heating cycle process, and control the working condition of the steam generator 8 and / or the water adding condition of the steam generator 8 according to the temperature of the steam generator 8 during the heating cycle process, and allow the steam 21 generated by the steam generator 8 to enter the cavity 22 of the inner tank 18 of the steam system.

[0115] From the above description, it can be seen that the above-mentioned embodiments of the present invention achieve the following technical effects: mainly solve the problem of excessive noise during the steaming process of the instant steam generator from two aspects: program and physical structure. Program aspect: first use logic to control the time (water height) of the water inlet pump to add water, and then use the instant steam generator to heat it, so that the water is relatively slowly vaporized to produce steam. Compared with the previous instant steam generator being heated to a certain temperature first and then adding water to the instant steam generator, the intensity of steam generation is much smaller. Physical structure aspect: before the steam enters the inner tank cavity, a pressure reducing nut is set to allow the high-temperature and high-pressure steam to flow between the flat notch of the steam outlet joint (corresponding to the steam outlet) and the thread gap of the pressure reducing nut (corresponding to the flow blocker), thereby reducing the impact or disturbance of the steam entering the inner tank cavity on the surrounding air and reducing the generation of noise during steaming.

[0116] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0117] Unless otherwise specifically stated, the relative arrangement, numerical expressions and numerical values ​​of the parts and steps set forth in these embodiments do not limit the scope of the application. Meanwhile, it should be understood that, for ease of description, the sizes of the various parts shown in the accompanying drawings are not drawn according to actual proportional relationships. The technology, methods and equipment known to those of ordinary skill in the relevant art may not be discussed in detail, but in appropriate cases, the technology, methods and equipment should be considered as a part of the specification. In all examples shown and discussed here, any specific value should be interpreted as being merely exemplary, rather than as a limitation. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters represent similar items in the following drawings, and therefore, once a certain item is defined in an accompanying drawing, it does not need to be further discussed in subsequent drawings.

[0118] In the description of the present application, it should be understood that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction, and therefore cannot be understood as limiting the scope of protection of the present application; the directional words "inside and outside" refer to the inside and outside relative to the outline of each component itself.

[0119] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0120] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only to facilitate the distinction between corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of this application.

[0121] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A steam system, characterized in that: include: A steam generator (8) and an inner container (18), wherein the steam generator (8) is used to generate steam; A steam pipe fitting is inserted into the inner container (18), and one end of the steam pipe fitting is connected to the steam generator (8); A flow-blocking member (20) is arranged at the other end of the steam pipe, at least a portion of the flow-blocking member (20) is opposite to and spaced from the steam outlet (23) of the steam pipe, a flow-blocking channel is formed between the flow-blocking member (20) and at least a portion of the steam pipe, and the flow-blocking channel is connected to the cavity of the inner liner (18), so that the steam in the steam pipe enters the cavity of the inner liner (18) after passing through the flow-blocking channel.

2. The steam system according to claim 1, characterized in that: The flow blocking member (20) comprises an annular shell (201), the annular shell (201) being sleeved on the other end of the steam pipe, a part of the annular shell (201) being connected to the steam pipe, and another part of the annular shell (201) being spaced apart from and arranged opposite to the steam outlet (23) to enclose the flow blocking channel.

3. The steam system according to claim 2, characterized in that: The flow blocking member (20) further comprises an end plate (202), wherein the end plate (202) is connected to the annular shell (201) and is located at the end of the annular shell (201), and the end plate (202) is arranged opposite to one end of the flow blocking channel to block one end of the flow blocking channel.

4. The steam system according to claim 3, characterized in that: The annular shell (201) has a first port (2011) and a second port which are arranged opposite to each other, the first port (2011) being sleeved on the other end of the steam pipe, and the second port being located at the end of the other end of the steam pipe; The end plate (202) is arranged at the first port (2011), the end plate (202) is an annular plate structure, and the inner ring of the end plate (202) is adapted to the outer shape of the steam pipe to seal the gap between the annular shell (201) and the steam pipe, so that the steam in the blocking channel flows out through the second port; or, The end plate (202) is arranged at the second port and blocks the second port so that the steam in the blocking channel flows out through the first port (2011).

5. The steam system according to claim 4, characterized in that: The first port (2011) is located on a side of the wall of the inner container (18) close to the inner container (18) of the second port; and / or, The steam pipe fitting comprises a steam inlet pipe (14) and a steam joint (15) which are connected to each other. The steam joint (15) is passed through the inner liner (18). The steam inlet pipe (14) is detachably connected to the steam joint (15). The steam inlet pipe (14) is arranged outside the inner liner (18). An end of the steam inlet pipe (14) away from the steam joint (15) forms one end of the steam pipe fitting, and an end of the steam joint (15) away from the steam inlet pipe (14) forms the other end of the steam pipe fitting.

6. The steam system according to claim 2, characterized in that: A spoiler protrusion (2012) is provided on another part of the annular shell (201), and the spoiler protrusion (2012) is provided protruding from a side of the annular shell (201) close to the steam outlet (23).

7. The steam system according to claim 1, characterized in that: The steam pipe comprises a steam joint (15), the steam joint (15) is inserted into the inner liner (18), a first external thread and a steam outlet (23) are provided at a portion of the steam joint (15) located in the inner liner (18), the steam outlet (23) and the first external thread are arranged at intervals along the annular direction of the portion of the steam joint (15) located in the inner liner (18), the flow blocking member (20) is provided with a first internal thread matched with the first external thread, and the flow blocking member (20) is connected to the portion of the steam joint (15) located in the inner liner (18) by means of threads.

8. The steam system according to claim 7, characterized in that The portion of the steam joint (15) located in the inner container (18) comprises an avoidance surface (151) and a mating surface (152) connected to each other along the annular outer edge of the steam joint (15), the avoidance surface (151) being opposite to and spaced from at least a portion of the flow blocking member (20), the avoidance surface (151) being provided with a thread connected to the steam outlet (23), and the mating surface (152) being provided with the first external thread.

9. The steam system according to claim 8, characterized in that There are at least two avoidance surfaces (151), at least two avoidance surfaces (151) are arranged at intervals along the annular outer edge of the steam joint (15), there are at least two matching surfaces (152), one matching surface (152) is arranged between two adjacent avoidance surfaces (151), each of the avoidance surfaces (151) is provided with the steam outlet (23), and each of the matching surfaces (152) is provided with the first external thread; or, There are two avoidance surfaces (151), and the two avoidance surfaces (151) are arranged at intervals along the annular outer edge of the steam joint (15); there are two matching surfaces (152), and one matching surface (152) is arranged between the two avoidance surfaces (151); each of the avoidance surfaces (151) is provided with the steam outlet (23); each of the matching surfaces (152) is provided with the first external thread; the two avoidance surfaces (151) and the two matching surfaces (152) are connected to form a waist-shaped outer edge.

10. The steam system according to claim 1, characterized in that The steam pipe is provided with a limiting protrusion (153), and the steam system further comprises: A sealing member (17) is arranged between the steam pipe and the inner container (18); An adjusting member (16), wherein the adjusting member (16) is arranged on the steam pipe member in an adjustable manner along the extension direction of the steam pipe member and is spaced apart from the limiting protrusion (153); the adjusting member (16) is arranged to protrude from the outer edge of the steam pipe member; the sealing member (17) is arranged between the limiting protrusion (153) and the adjusting member (16); and the two ends of the sealing member (17) are respectively used to contact the limiting protrusion (153) and the adjusting member (16).

11. A control method, characterized in that: The control method is applicable to the steam system according to any one of claims 1 to 10, and the control method comprises: adding initial water into a steam generator of the steam system; The steam generator is controlled to enter a heating cycle process, and the working condition of the steam generator and / or the water addition condition of the steam generator are controlled according to the temperature of the steam generator in the heating cycle process, so that the steam generated by the steam generator is heated to enter the cavity of the inner tank of the steam system.

12. The control method according to claim 11, characterized in that: The controlling of the working condition of the steam generator and / or the water adding condition of the steam generator according to the temperature of the steam generator in the heating cycle process includes: Starting the steam generator; obtaining the temperature of the steam generator; When the temperature of the steam generator is greater than or equal to a first preset temperature, the steam generator is controlled to stop working and supplementary water is added into the steam generator; When the temperature of the steam generator is lower than the first preset temperature, the steam generator is controlled to continue to operate.

13. The control method according to claim 12, characterized in that: The adding initial water into the steam generator of the steam system comprises: making the water inflow of the initial water in the steam generator a first water inflow; The adding of supplementary water into the steam generator comprises: making the water inflow of the supplementary water into the steam generator a second water inflow; Wherein, the second water inflow is greater than the first water inflow.

14. The control method according to claim 12, characterized in that: The adding initial water into the steam generator of the steam system comprises: controlling the first preset time length for water to be introduced into the steam generator; The adding of supplementary water into the steam generator comprises: controlling the water to be introduced into the steam generator for a second preset time period; Among them, the first preset time length is shorter than the second preset time length.

15. The control method according to claim 14, characterized in that: The first preset temperature is between 120° C. and 200° C.; and / or, The first preset duration is between 1 second and 3 seconds; and / or, The second preset time length is between 2s and 4s.

16. The control method according to claim 11, characterized in that: The control method further comprises: Obtaining the temperature of the cavity of the liner; The working condition of the heating element for heating the cavity of the inner container is controlled according to the temperature of the cavity of the inner container.

17. The control method according to claim 16, characterized in that: The controlling of the working condition of the heating element for heating the cavity of the liner according to the temperature of the cavity of the liner includes: When the cavity temperature of the inner tank is less than or equal to a second preset temperature, controlling the heating element to operate at a first operating frequency; When the temperature of the cavity of the inner tank is greater than the second preset temperature, the heating element is controlled to operate at a second operating frequency.

18. The control method according to claim 17, characterized in that: The controlling the heating element to operate at the first operating frequency includes: controlling the heating element to operate continuously; and / or, The controlling the heating element to operate at the second operating frequency includes: controlling the heating element to operate intermittently.

19. The control method according to claim 18, characterized in that: The controlling the heating element to operate at a second operating frequency includes: The heating element is controlled to work intermittently with a duty ratio of 12:48.

Images