Steam generator and cooking appliance

Abstract

This utility model relates to the field of household appliance technology, and discloses a steam generator and cooking appliance. The steam generator includes a water tank, a heating element, a water-blocking element, and an impeller assembly. The water tank has a cavity, and the heating element is disposed on the water tank. The water-blocking element includes a water-blocking plate, which is positioned below and close to the high water level line of the water tank, allowing fluid below the water-blocking plate to pass over it. The water is heated into steam and rises in gaseous form until it overflows the liquid surface. The function of the water-blocking plate is to puncture large air bubbles into smaller ones and increase water resistance, thereby preventing water droplets from splashing to the steam outlet, thus achieving stable separation of water and steam.

Description

Technical Field

[0001] This utility model relates to the field of household appliance technology, and in particular to a steam generator and cooking appliance. Background Technology

[0002] Steam generators are used in various household appliances. They provide steam during appliance operation by heating water to boiling. The generated steam is discharged through the generator's outlet. However, the steam has a high water content, easily carrying water droplets during discharge, which can affect the normal operation of household appliances. As household appliances become increasingly integrated, the required installation size of components is shrinking, and the small size of water-box type steam generators exacerbates the problem of incomplete water-steam separation.

[0003] Therefore, there is an urgent need for a steam generator and cooking appliance to solve the above problems. Utility Model Content

[0004] One objective of this invention is to provide a steam generator that can improve the efficiency of water-vapor separation.

[0005] Based on the above concept, the technical solution adopted by this utility model is as follows:

[0006] A steam generator is provided for inputting steam into the cooking chamber of a cooking appliance, the steam generator comprising:

[0007] A water box having a cavity, wherein a steam outlet is provided on the cavity wall;

[0008] A water-blocking assembly, comprising a water-blocking plate, wherein the water-blocking plate is disposed below and close to the high water level line of the water box, and fluid below the water-blocking plate can pass over the water-blocking plate upwards;

[0009] A heating component is disposed on the water box.

[0010] Optionally, the water-blocking assembly further includes a lower water-blocking plate, which is spaced below the middle water-blocking plate, allowing fluid below the lower water-blocking plate to flow upward over it.

[0011] Optionally, the water-baffle plate has a gap with the cavity wall; and / or, the water-baffle plate is provided with flow holes;

[0012] The lower baffle plate has a gap with the cavity wall; and / or, the lower baffle plate is provided with a flow hole.

[0013] Optionally, the water-blocking assembly further includes an upper water-blocking plate, which is located above the middle water-blocking plate. The upper water-blocking plate, the middle water-blocking plate, and the cavity wall form a boiling buffer zone, which does not have the steam outlet.

[0014] The boiling buffer is connected to the cavity below the water baffle plate through a first gap, and the boiling buffer is connected to the steam outlet through a second gap, so that the fluid below the water baffle plate can flow through the boiling buffer along a preset flow direction.

[0015] Optionally, the upper baffle plate includes a first plate, which is spaced apart from the lower baffle plate and the planes of the two plates form an angle. The first plate, the lower baffle plate, and the cavity wall enclose the boiling buffer zone. A second gap is formed between the first plate and the lower baffle plate. The plane of the lower baffle plate has the first gap. The first gap communicates with the boiling buffer zone in the vertical direction, so that the fluid below the lower baffle plate can enter the boiling buffer zone more quickly.

[0016] Optionally, the upper baffle plate includes a second plate and a third plate. The third plate is spaced apart from the cavity wall where the steam outlet is located. The vertical projection of the third plate covers the steam outlet. The second plate is spaced below the third plate and connected to the lower baffle plate. The lower baffle plate, the second plate, the third plate, and the cavity wall form the boiling buffer zone. The third plate and the cavity wall form a second gap, and the second plate and the third plate form a first gap. The first gap communicates with the boiling buffer zone in the horizontal direction, so that the fluid below the lower baffle plate can be decelerated and enter the boiling buffer zone.

[0017] Optionally, the steam generator further includes an impeller assembly, the steam outlet is connected to the steam outlet channel, the impeller assembly includes an impeller and a mounting bracket, the mounting bracket is rotatably disposed on the steam outlet channel, and the impeller is disposed on the mounting bracket.

[0018] Optionally, along the axial direction of the impeller, the upper part of the impeller is located inside the steam outlet passage, and the lower part of the impeller is located outside the steam outlet passage. The diameter of the upper part of the impeller is D1, and the diameter of the lower part of the impeller is D2, where D1 < D2.

[0019] Optionally, the impeller assembly further includes a motor, the output of which is connected to the mounting bracket, and the motor is used to drive the mounting bracket to rotate.

[0020] Another objective of this invention is to provide a cooking appliance that includes a steam separator with high water-steam separation efficiency, thereby improving the performance of the cooking appliance.

[0021] Based on the above concept, the technical solution adopted by this utility model is as follows:

[0022] A cooking appliance is provided, comprising a cooking body, a water tank, and the aforementioned steam generator. The cooking body has a cooking cavity, and the water tank and the steam generator are both disposed on the cooking body and located outside the cooking cavity. The water tank has a water inlet and a steam outlet, the water inlet being connected to the water tank and the steam outlet being connected to the cooking cavity.

[0023] The beneficial effects of this utility model are as follows:

[0024] The steam generator proposed in this invention includes a water box, a heating component, a water-blocking component, and an impeller assembly. The water box has a cavity for holding water to be heated. The heating component is mounted on the water box to heat the water to generate steam. The water-blocking component includes a water-blocking plate positioned below and close to the high water level line of the water box, allowing fluid below the water-blocking plate to flow upwards over it. The water is heated into steam and rises in gaseous form until it overflows the liquid surface. The function of the water-blocking plate is to break large air bubbles into smaller ones and increase water resistance, thereby preventing water droplets from splashing to the steam outlet and achieving stable separation of water and steam.

[0025] The cooking appliance proposed in this utility model includes a cooking body, a water tank, and the aforementioned steam generator. The cooking body has a cooking cavity, and both the water tank and the steam generator are disposed on the cooking body and located outside the cooking cavity. The water tank has a water inlet and a steam outlet, with the water inlet communicating with the water tank and the steam outlet communicating with the cooking cavity. The steam generator included in this cooking appliance has high gas-liquid separation efficiency, which can effectively improve the product performance of the cooking appliance. Attached Figure Description

[0026] Figure 1 This is an exploded structural diagram of the first type of steam generator provided in this embodiment of the present invention;

[0027] Figure 2 This is a first-view cross-sectional view of the first type of steam generator provided in this embodiment of the present invention;

[0028] Figure 3 This is a partial cross-sectional view (without motor and mounting bracket) from a second perspective of the first type of steam generator provided in this embodiment of the present invention;

[0029] Figure 4 This is a cross-sectional view from a second perspective of the first type of steam generator provided in this embodiment of the present invention;

[0030] Figure 5 This is a partial structural schematic diagram from a first perspective of the second type of steam generator provided in this embodiment of the present invention;

[0031] Figure 6 This is a partial structural schematic diagram from a second perspective of the second type of steam generator provided in this embodiment of the present invention;

[0032] Figure 7 This is a partial structural schematic diagram from a first perspective of the third type of steam generator provided in this embodiment of the present invention;

[0033] Figure 8 This is a partial structural schematic diagram from a second perspective of the third type of steam generator provided in this embodiment of the present invention.

[0034] In the picture:

[0035] 1. Water box; 10. Cavity; 11. Box body; 111. Steam outlet; 112. Water outlet; 12. Cover; 13. Steam outlet passage;

[0036] 2. Water-blocking assembly; 20. Preset flow direction; 201. First partition; 202. Second partition; 21. Middle partition plate; 22. Lower partition plate; 23. Upper partition plate; 231. First plate; 232. Second plate; 233. Third plate;

[0037] 3. Heating components;

[0038] 4. Impeller assembly; 41. Impeller; 42. Mounting bracket; 43. Motor; 44. Seals. Detailed Implementation

[0039] To make the technical problem solved by this utility model, the technical solution adopted, and the technical effect achieved clearer, the technical solution of this utility model will be further described below with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are merely for explaining this utility model and not for limiting it. Furthermore, it should be noted that, for ease of description, only the parts related to this utility model are shown in the accompanying drawings, not all of them.

[0040] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0041] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0042] In the description of this embodiment, the terms "upper," "lower," "left," and "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0043] The technical solution of this utility model will be further described below with reference to the accompanying drawings and specific embodiments.

[0044] Steam generators are used to input steam into the cooking chamber of cooking appliances. As the integration requirements of cooking appliances become higher and higher, the installation volume of each component inside the cooking appliance also needs to be smaller and smaller. However, if the size of the steam generator is too small, the problem of incomplete water-steam separation will become more and more serious.

[0045] This utility model discloses various steam generators to solve this problem.

[0046] Example 1

[0047] This embodiment discloses a steam generator, including a water tank 1 and a heating assembly 3. The water tank 1 has a cavity 10 for holding water to be heated, and the heating assembly 3 is disposed on the water tank 1 for heating the water. When the water is heated to boiling, steam is generated. The steam can be discharged through a steam outlet 111 provided on the cavity wall of the cavity 10 to supply the cooking cavity of a cooking appliance. To improve the water-steam separation efficiency of the steam generator, the steam generator also includes a water-blocking assembly 2 and an impeller assembly 4. The water-blocking assembly 2 includes a water-blocking plate 21, which is disposed below and close to the high water level line of the water tank 1, allowing fluid below the water-blocking plate 21 to flow upward over it. When the water boils, as the heating component 3 continues to heat, the water near the heating component 3 will be heated into water vapor and rise in gaseous form until it bursts out of the water surface. The function of the water baffle plate 21 is to puncture the large bubbles into small bubbles and increase the water resistance, thereby preventing water droplets from splashing to the steam outlet 111, so as to achieve stable separation of water vapor.

[0048] In this embodiment, the water box 1 includes a box body 11 and a cover 12. The box body 11 has an opening, and the cover 12 is placed over the opening to form a cavity 10. Specifically, a water-blocking plate 21 can be disposed on either the box body 11 or the cover 12, with a gap between the water-blocking plate 21 and the other box body 11 or cover 12, allowing fluid below the water-blocking plate 21 to pass upwards through the gap. Alternatively, a flow-through hole can be provided on the water-blocking plate 21, allowing fluid below the water-blocking plate 21 to pass upwards through the flow-through hole. The shape of the flow-through hole can be circular, strip-shaped, or other shapes. The aforementioned flow-through hole and gap can be provided simultaneously or selectively.

[0049] Example 2

[0050] This embodiment provides a steam generator, which differs from the steam generator in Embodiment 1 in that:

[0051] like Figures 1 to 4As shown, the water-blocking assembly 2 of the steam generator also includes a lower water-blocking plate 22, which is spaced below the middle water-blocking plate 21. Fluid below the lower water-blocking plate 22 can pass over it. In this embodiment, the lower water-blocking plate 22 and the middle water-blocking plate 21 are staggered in the vertical direction, that is, each of the lower water-blocking plate 22 and the middle water-blocking plate 21 is spaced from different cavity walls of the cavity 10. The gaps between the lower water-blocking plate 22, the middle water-blocking plate 21, and the cavity walls form an S-shaped flow channel, which significantly increases water resistance. When the water level in the water box 1 is high, both the middle water-blocking plate 21 and the lower water-blocking plate 22 are located below the boiling liquid surface. The lower water-blocking plate 22 and the middle water-blocking plate 21 have the same function: to puncture the rising large bubbles and increase water resistance to improve the water-vapor separation effect. When the water level in the water box 1 drops to between the middle baffle plate 21 and the lower baffle plate 22, that is, the lower baffle plate 22 is still below the boiling liquid surface, it can still puncture large bubbles. The upper baffle plate 23 can reduce the water droplets carried by the steam to the steam outlet 111 by extending the steam overflow path during the steam rise process, which can also achieve the effect of gas-liquid separation.

[0052] In this embodiment, the first end of both the middle baffle plate 21 and the lower baffle plate 22 is connected to the cavity wall of the cavity 10, and the second end has a gap with the cavity wall of the cavity 10. Both the middle baffle plate 21 and the lower baffle plate 22 are inclined and the second end is below the first end, so that when the water level in the water box 1 drops to below the middle baffle plate 21 and the lower baffle plate 22, water droplets will not accumulate on the middle baffle plate 21 and the lower baffle plate 22.

[0053] Optionally, the lower baffle 22 is disposed in one of the housing 11 or the cover 12, with a gap between the lower baffle 22 and the other housing 11 or cover 12, so that fluid below the lower baffle 22 can pass upward over the lower baffle 22 through the gap. Alternatively, a flow-through hole can be provided on the lower baffle 22, so that fluid below the lower baffle 22 can pass upward over the lower baffle 22 through the flow-through hole. The shape of the flow-through hole can be circular, strip-shaped, or other shapes. The aforementioned flow-through hole and gap can be provided simultaneously or one of them can be provided.

[0054] In addition, the structure of the steam generator provided in this embodiment is the same as that of the steam generator in Embodiment 1.

[0055] Example 3

[0056] This embodiment provides a steam generator, which differs from the steam generator in Embodiment 1 in that:

[0057] The water-blocking assembly 2 of the steam generator also includes an upper water-blocking plate 23, which is positioned above the middle water-blocking plate 21. The upper water-blocking plate 23, the middle water-blocking plate 21, and the cavity wall form a boiling buffer zone, which does not have a steam outlet 111. The boiling buffer zone is connected to the cavity 10 below the middle water-blocking plate 21 via a first gap 201, and to the steam outlet 111 via a second gap 202, thereby allowing the fluid below the middle water-blocking plate 21 to flow through the boiling buffer zone along a preset flow direction 20. Located above the middle water-blocking plate 21, the boiling buffer zone provides a buffer space when boiling liquid splashes, allowing the boiling water to flow along the preset flow direction 20 to the boiling buffer zone instead of directly rushing towards the steam outlet 111. This not only reduces the pressure of the boiling water but also achieves water-steam separation. In practice, the upper water baffle 23 is located above the middle water baffle 21. It can be set horizontally or vertically. The function of the upper water baffle 23 is to enclose an area without a steam outlet 111 between the steam outlet 111 and the middle water baffle 21.

[0058] like Figure 5 and Figure 6 As shown, in this embodiment, the upper baffle plate 23 includes a first plate 231, which is spaced apart from the middle baffle plate 21, and the planes of the two plates are set at an angle. The first plate 231, the middle baffle plate 21, and the cavity wall form a boiling buffer zone. A second gap 202 is formed between the first plate 231 and the middle baffle plate 21. The plane of the middle baffle plate 21 has a first gap 201, which is vertically connected to the boiling buffer zone so that the fluid below the middle baffle plate 21 can accelerate into the boiling buffer zone. In specific implementation, the first gap 201 can be a gap between the middle baffle plate 21 and the cavity wall, or it can be an opening on the middle baffle plate 21. The size of the first gap 201 is small. When the fluid below the middle baffle plate 21 passes through the first gap 201, the flow velocity increases to accelerate into the boiling buffer zone, and then it falls back under the action of gravity and flows out of the boiling buffer zone through the second gap 202. The boiling liquid level outside the boiling buffer zone is lower than that inside the boiling buffer zone. The difference in liquid level between the two indicates that the pressure of the boiling liquid gradually decreases as it flows along the preset direction, making it less likely to rush towards the steam outlet 111, thus achieving gas-liquid separation. In this embodiment, the baffle plate 21 is horizontally arranged, with gaps between both ends of the baffle plate 21 and the cavity wall, thereby forming two first intervals 201. Two first plates 231 are arranged vertically to form two boiling buffer zones at both ends of the cavity 10. Each boiling buffer zone corresponds to one first interval 201. The boiling liquid below the baffle plate 21 can be divided into two paths and flow along the preset flow direction 20 to their respective boiling buffer zones. This arrangement can effectively utilize the space within the cavity 10 and maximize gas-liquid separation.

[0059] In other embodiments, the water baffle plate 21 may not be horizontally arranged, and the first plate 231 may not be vertically arranged. It is only necessary to ensure that the first plate 231, the water baffle plate 21 and the cavity wall are spaced apart, and that the three can form a boiling buffer zone without a steam outlet 111.

[0060] Additionally, it should be noted that in this embodiment, both the first plate 231 and the water-blocking plate 21 are disposed on the box body 11 and abut against the cover 12. That is, except for the aforementioned first interval 201 and second interval 202, both ends of the first plate 231 and the water-blocking plate 21 abut against the cavity wall of the cavity 10 in the thickness direction of the water box 1. However, in other embodiments, both the first plate 231 and the water-blocking plate 21 are disposed on the box body 11 and may also have a gap with the cover 12. However, this gap must ensure that it does not affect the flow of boiling liquid along the preset flow direction 20.

[0061] In addition, the structure of the steam generator provided in this embodiment is the same as that of the steam generator in Embodiment 1.

[0062] Example 4

[0063] This embodiment provides a steam generator, which differs from the steam generator in Embodiment 3 in that:

[0064] like Figure 7 and Figure 8 As shown, in this embodiment, the upper baffle plate 23 includes a second plate 232 and a third plate 233. The third plate 233 is spaced apart from the cavity wall where the steam outlet 111 is located. The vertical projection of the third plate 233 covers the steam outlet 111. The second plate 232 is spaced below the third plate 233 and connected to the lower baffle plate 21. The lower baffle plate 21, the second plate 232, the third plate 233, and the cavity wall together form a boiling buffer zone. The third plate 233 forms a second gap 202 with the cavity wall, and a first gap 201 is formed between the second plate 232 and the third plate 233. The first gap 201 is horizontally connected to the boiling buffer zone so that the fluid below the lower baffle plate 21 can be decelerated and enter the boiling buffer zone. In a specific implementation, the second plate 232 can be connected to the end of the water-blocking plate 21, and the end has a gap with the cavity wall. The second plate 232 is located between the third plate 233 and the water-blocking plate 21. The boiling liquid can pass through the gap between the end of the water-blocking plate 21 and the cavity wall, and flow along the second plate 232 until it passes through the first interval 201 and enters the boiling buffer. During the flow process, the boiling liquid needs to turn and enter the boiling buffer, and falls back under the action of gravity in the boiling buffer, so that the flow rate of the boiling liquid continuously decreases during the flow process until only gas can pass through the second interval 202, thereby realizing gas-liquid separation.

[0065] In addition, the structure of the steam generator provided in this embodiment is the same as that of the steam generator in Embodiment 3.

[0066] Example 5

[0067] This embodiment provides a steam generator, which differs from any of the steam generators in Embodiments 1 to 4 in that:

[0068] Optionally, the steam generator also includes an impeller assembly 4, which is located at the steam outlet 111. The impeller 41 of the impeller assembly 4 rotates to continuously attach water from the steam. As the impeller 41 rotates, the water attached to the impeller 41 is thrown out by the impeller 41 due to centrifugal force, thus achieving the effect of water-steam separation.

[0069] In this embodiment, the water box 1 further includes a steam outlet channel 13, which is connected to the steam outlet 111. The water box 1 is connected to the cooking cavity through the steam outlet channel 13. Optionally, the impeller assembly 4 includes an impeller 41 and a mounting bracket 42. The mounting bracket 42 is rotatably mounted on the steam outlet channel 13, and the impeller 41 is mounted on the mounting bracket 42. When steam flows through the steam outlet channel 13, the flowing steam can drive the impeller 41 to rotate. The rotation of the impeller 41 generates centrifugal force, thereby allowing the water adhering to the impeller 41 to be thrown out. In a specific implementation, a mounting hole can be provided on the inner wall of the steam outlet channel 13 so that one end of the mounting bracket 42 can be rotatably mounted in the mounting hole. When the impeller 41 is driven, it drives the mounting bracket 42 to rotate coaxially.

[0070] Optionally, along the axial direction of the impeller 41, the upper part of the impeller 41 is located inside the steam outlet passage 13, and the lower part of the impeller 41 is located outside the steam outlet passage 13. The diameter of the upper part of the impeller 41 is D1, and the diameter of the lower part of the impeller 41 is D2, where D1 < D2. Placing the smaller diameter portion of the impeller 41 inside the steam outlet passage 13 is more conducive to the steam driving the impeller 41 to rotate, while placing the larger diameter portion of the impeller 41 outside the steam outlet passage 13 results in a greater centrifugal force on part of the impeller 41, which is more conducive to the water adhering to the impeller 41 being thrown out.

[0071] Optionally, the impeller assembly 4 also includes a motor 43, the output end of which is connected to the mounting bracket 42. The motor 43 drives the mounting bracket 42 to rotate. In a specific implementation, the motor 43 is located outside the steam outlet passage 13, the mounting hole extends through the steam outlet passage 13, one end of the mounting bracket 42 is located inside the steam outlet passage 13 and connected to the impeller 41, and the other end of the mounting bracket 42 extends out of the steam outlet passage 13 and is connected to the motor 43. A seal 44 is provided at the mounting hole to prevent steam leakage from the mounting hole. The seal 44 is used to achieve a dynamic seal at the assembly point of the mounting bracket 42 and the mounting hole. In a specific implementation, the seal 44 can be a shaft seal rubber.

[0072] In addition, the structure of the steam generator provided in this embodiment is the same as that of any one of the steam generators in Embodiments 1 to 4.

[0073] Example 6

[0074] This embodiment provides a cooking appliance, including a cooking body, a water tank, and any one of the steam generators from Embodiments 1 to 5. The steam generator of this cooking appliance has high gas-liquid separation efficiency, which can effectively improve the product performance of the cooking appliance.

[0075] Optionally, the cooking body has a cooking cavity, and the water tank and steam generator are both located on the cooking body and outside the cooking cavity. The water tank 1 has a water inlet and a steam outlet 111, with the water inlet connected to the water tank and the steam outlet 111 connected to the cooking cavity.

[0076] The above embodiments merely illustrate the basic principles and characteristics of this utility model. This utility model is not limited to the above embodiments. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A steam generator for inputting steam into the cooking chamber of a cooking appliance, characterized in that, The steam generator includes: Water box (1), the water box (1) has a cavity (10), and a steam outlet (111) is provided on the cavity wall of the cavity (10); Water-blocking assembly (2), the water-blocking assembly (2) includes a water-blocking plate (21), the water-blocking plate (21) is disposed below and close to the high water level line of the water box (1), and the fluid below the water-blocking plate (21) can pass over the water-blocking plate (21) upward; Heating component (3) is disposed on the water box (1).

2. The steam generator according to claim 1, characterized in that, The water-blocking assembly (2) further includes a lower water-blocking plate (22), which is spaced below the middle water-blocking plate (21), and the fluid below the lower water-blocking plate (22) can pass over the lower water-blocking plate (22) upwards.

3. The steam generator according to claim 2, characterized in that, The water baffle plate (21) has a gap with the cavity wall; and / or, the water baffle plate (21) is provided with flow holes; The lower baffle plate (22) has a gap with the cavity wall; and / or, the lower baffle plate (22) is provided with a flow hole.

4. The steam generator according to claim 1, characterized in that, The water-blocking assembly (2) further includes an upper water-blocking plate (23), which is located above the middle water-blocking plate (21). The upper water-blocking plate (23), the middle water-blocking plate (21), and the cavity wall form a boiling buffer zone, which does not have the steam outlet (111). The boiling buffer is connected to the cavity (10) below the water baffle plate (21) through the first interval (201), and the boiling buffer is connected to the steam outlet (111) through the second interval (202), so that the fluid below the water baffle plate (21) can flow through the boiling buffer along the preset flow direction (20).

5. The steam generator according to claim 4, characterized in that, The upper baffle plate (23) includes a first plate (231), which is spaced apart from the middle baffle plate (21) and the planes of the two plates form an angle. The first plate (231), the middle baffle plate (21) and the cavity wall enclose the boiling buffer zone. A second gap (202) is formed between the first plate (231) and the middle baffle plate (21). The plane of the middle baffle plate (21) has the first gap (201). The first gap (201) is vertically connected to the boiling buffer zone so that the fluid below the middle baffle plate (21) can accelerate into the boiling buffer zone.

6. The steam generator according to claim 4, characterized in that, The upper baffle plate (23) includes a second plate (232) and a third plate (233). The third plate (233) is spaced apart from the cavity wall where the steam outlet (111) is located. The vertical projection of the third plate (233) covers the steam outlet (111). The second plate (232) is spaced below the third plate (233) and connected to the middle baffle plate (21). The middle baffle plate (21), the second plate (232), the third plate (233), and the cavity wall form the boiling buffer zone. The third plate (233) and the cavity wall form the second gap (202). The second plate (232) and the third plate (233) form the first gap (201). The first gap (201) communicates with the boiling buffer zone in the horizontal direction so that the fluid below the middle baffle plate (21) can be decelerated and enter the boiling buffer zone.

7. The steam generator according to any one of claims 1 to 6, characterized in that, The steam generator also includes an impeller assembly (4), the steam outlet (111) is connected to the steam outlet channel (13), the impeller assembly (4) includes an impeller (41) and a mounting bracket (42), the mounting bracket (42) is rotatably disposed on the steam outlet channel (13), and the impeller (41) is disposed on the mounting bracket (42).

8. The steam generator according to claim 7, characterized in that, Along the axial direction of the impeller (41), the upper part of the impeller (41) is located inside the steam outlet passage (13), and the lower part of the impeller (41) is located outside the steam outlet passage (13). The diameter of the upper part of the impeller (41) is D1, and the diameter of the lower part of the impeller (41) is D2, where D1 < D2.

9. The steam generator according to claim 7, characterized in that, The impeller assembly (4) also includes a motor (43), the output end of which is connected to the mounting bracket (42), and the motor (43) is used to drive the mounting bracket (42) to rotate.

10. A cooking utensil, characterized in that, The device includes a cooking body, a water tank, and a steam generator as described in any one of claims 1 to 9. The cooking body has a cooking cavity, and the water tank and the steam generator are both disposed on the cooking body and located outside the cooking cavity. The water tank (1) has a water inlet and a steam outlet (111), the water inlet being connected to the water tank and the steam outlet (111) being connected to the cooking cavity.

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