Steam generating device of cooking utensil

Abstract

The steam generating device comprises a water storage cavity capable of storing purified water, a gas collecting hood clamped at the bottom of the water storage cavity, a first hole formed in the upper portion of the gas collecting hood, a heating assembly arranged on the lower surface of the bottom of the water storage cavity and located below the gas collecting hood, and a control assembly electrically connected with the heating assembly. The gas collecting hood comprises an outer hood body propped against the water storage cavity, an inner hood body embedded in the outer hood body, and a flow guide middle plate of which at least two ends are connected with the side walls of the outer hood body and the inner hood body; the inner cover body is of a cup-shaped structure; and the flow guide middle plate is arranged between two adjacent first holes. According to the utility model, the steam is converged from bottom to top and is quickly discharged towards the cooking cavity in a spiral rising trend, so that the discharging speed of the steam is improved, the cooking experience of a user is further improved, and the steam output is further improved on the premise that the structure and the power of the heating disc are not changed.

Description

Technical field

[0001] The utility model relates to the technical field of kitchen appliances, and in particular to a steam generating device for a cooking utensil. [Background Technology]

[0002] With the development of technology and the increasing demand for cooking, the variety of cooking appliances is also increasing. Existing steaming and stewing appliances have problems such as insufficient steam generation, insufficient concentration, and slow exhaust. Manufacturers have to increase the heating power to increase steam generation, but this also increases the power consumption and manufacturing costs of the equipment. [Utility Model Content]

[0003] The present utility model is proposed to solve at least one of the above problems, and its purpose is to provide a steam generating device for a cooking appliance.

[0004] The technical solution of the utility model is: a steam generating device for a cooking appliance, comprising a water storage chamber for storing clean water, an air collecting hood snapped onto the bottom of the water storage chamber, a first hole arranged on the upper part of the air collecting hood, a heating component arranged on the lower surface of the bottom of the water storage chamber and below the air collecting hood, and a control component electrically connected to the heating component; the air collecting hood comprises an outer cover body abutting the water storage chamber, an inner cover body embedded in the outer cover body, a guide middle plate connected at both ends to the side walls of the outer cover body and the inner cover body, and a second hole arranged at a position close to the bottom of the outer cover body; the inner cover body is a cup-shaped structure; the guide middle plate is arranged between two adjacent first holes; and / or the guide middle plate is arranged below the first hole.

[0005] Preferably, the air collecting hood further comprises a guide top plate, both ends of which are respectively connected to the upper ends of the outer cover body and the inner cover body; the first hole is located across two planes of the inner cover body and the guide top plate.

[0006] Preferably, an observation hole is provided at the bottom of the inner cover body, which is smaller than the first hole. The observation hole is used to observe the working condition of the water storage chamber at the position of the heating component.

[0007] Preferably, the heating component includes a heating disk directly below the gas collecting hood, and the area of ​​the heating disk is less than or equal to the orthographic projection area of ​​the gas collecting hood.

[0008] Preferably, the water storage chamber further comprises a mounting portion formed by sinking on the upper surface of the bottom of the water storage chamber, and the outer cover is detachably connected to the mounting portion.

[0009] Preferably, the water storage chamber further includes a plurality of support columns protruding downward from the lower surface of the bottom of the water storage chamber.

[0010] Preferably, the control component includes a circuit board electrically connected to the heating component, a heat insulation cover arranged around the circuit board, and a support ring arranged on the top of the heat insulation cover and with one end abutting the water storage chamber; the support ring is arranged at the root of the support column.

[0011] Preferably, the heat insulation cover further comprises a heat insulation sleeve, which is formed by extending downward from the top surface of the heat insulation cover and sleeved on the peripheral side and the lower end of the support column.

[0012] Preferably, the heat insulation cover further comprises a limiting member, which is protruding from the outer side wall of the heat insulation cover and abuts against the side wall of the support column.

[0013] Preferably, the top end of the second hole is higher than the bottom upper surface of the water storage chamber.

[0014] Preferably, it also includes an outer shell, a plurality of mounting columns on the outer shell and protruding inward; the water storage chamber and the control component are both arranged in the outer shell; and the mounting columns are threadedly connected to the support columns.

[0015] Compared with the background technology, the utility model has the following beneficial effects:

[0016] This utility model relates to a steam generating device for a cooking appliance. This structure, while maintaining the structure and power of the heating plate, increases the steam discharge rate and, consequently, the steam output. Specifically, by providing multiple airflow guide structures to guide the steam flow, the steam converges from bottom to top and is rapidly discharged into the cooking chamber in a spiraling manner, thereby increasing the steam discharge rate and, in turn, enhancing the user's cooking experience. This structure has the advantages of simplicity, compactness, and rational design; therefore, it is a product with superior technical and economic performance.

Brief Description of the Drawings

[0017] Figure 1 This is a schematic structural diagram of the steam generating device of the cooking utensil of the present invention;

[0018] Figure 2 It is a side view of the steam generating device of the cooking appliance of the present invention;

[0019] Figure 3 for Figure 2 Schematic diagram of the cross section in the AA direction;

[0020] Figure 4 for Figure 1 Schematic diagram of an explosion of the steam generating device of the cooking appliance shown.

[0021] Indicated in the attached figure: 1. Water storage chamber, 11. Gas collecting hood, 111. Outer cover, 112. Inner cover, 113. Guide top plate, 114. First hole, 115. Guide middle plate, 116. Second hole, 117. Observation hole, 12. Mounting part, 13. Support column, 2. Heating component, 21. Heating plate, 3. Control component, 31. Heat insulation cover, 311. Support ring, 312. Heat insulation sleeve, 313. Limiting part, 32. Circuit board, 4. Outer shell, 41. Mounting column. [Specific implementation method]

[0022] The embodiments of the present invention are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar numbers throughout represent the same or similar elements or elements with the same or similar functions.

[0023] In this utility model, unless otherwise specified or limited, the terms "assemble," "connect," and "connect" should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integral connection; mechanical connection; direct connection, connection through an intermediate medium, or internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on specific circumstances.

[0024] The following description of the embodiments of the present invention is provided in conjunction with the accompanying drawings to further describe the specific embodiments of the present invention so that the technical solutions and beneficial effects of the present invention are more clearly understood. The following description of the embodiments with reference to the accompanying drawings is for illustrative purposes only and is intended to explain the present invention, but is not to be construed as limiting the present invention.

[0025] The preferred embodiment provided by the present invention is as follows: Figures 1 to 4As shown, a steam generating device for a cooking appliance includes a water storage chamber 1 for storing clean water, an air collecting hood 11 snapped onto the bottom of the water storage chamber 1, a first hole 114 arranged on the upper part of the air collecting hood 11, a heating component 2 arranged on the lower surface of the bottom of the water storage chamber 1 and below the air collecting hood 11, and a control component 3 electrically connected to the heating component 2; the air collecting hood 11 includes an outer cover body 111 abutting against the water storage chamber 1, an inner cover body 112 embedded in the outer cover body 111, and a guide plate 115 with both ends connected to the side walls of the outer cover body 111 and the inner cover body 112; the inner cover body 112 is a cup-shaped structure; the guide plate 115 is arranged between two adjacent first holes 114; and / or, the guide plate 115 is arranged below the first hole 114. The guide plate 115 is used to change the flow direction of steam, causing it to flow in the direction of the guide plate 115's inclination, or to form a flocculent flow near the guide plate 115, thereby forcing the steam to flow over the flocculent flow, thereby changing the steam flow path to an inclined upward path. Furthermore, because the inner cover 112 is a cup-shaped structure with the outer cover 111 disposed outside the inner cover 112, the double-layer structure formed by the inner cover 112 and the outer cover 111, and the annular steam channel, combined with the configuration of the guide plate 115, allows steam to spiral upward in the steam channel and be discharged through the first hole 114.

[0026] In some optional embodiments, the cross-section of the outer cover 111 is wide at the bottom and narrow at the top. This arrangement makes the lower space of the steam channel larger than its upper space, that is, the air pressure in the upper space of the steam channel is greater than the air pressure in the lower space. At the same time, due to the self-generated physical property of the hot air flow flowing upward, the steam in the lower space will continuously replenish the upper space, and the steam is forced to be discharged from the first hole 114.

[0027] In this embodiment, the outer cover 111 further includes a second hole 116, which is located near the bottom of the outer cover 111. Due to the large temperature difference between the inside and outside of the steam channel and the pressure difference between the upper and lower parts of the steam channel, the negative pressure in the lower part and the higher temperature relative to the outside of the outer cover 111, the second hole 116 located near the bottom of the outer cover 111 will draw in cold air from the water storage chamber 1 to replenish the air lost in the lower space due to air flow, thereby forming heat convection and accelerating the flow rate of gas in the steam channel.

[0028] Furthermore, the top of the second hole 116 is higher than the bottom upper surface of the water storage chamber 1. The purpose of this arrangement is to prevent the clean water in the water storage chamber 1 from completely submerging the second hole 116, causing the second hole 116 to lose its air intake function.

[0029] In this embodiment, the air collecting hood 11 also includes a guide top plate 113, the two ends of which are respectively connected to the upper ends of the outer cover body 111 and the inner cover body 112; the first hole 114 is located across the two planes of the inner cover body 112 and the guide top plate 113. The air collecting hood 11 divides the water storage chamber 1 into two areas: a hot area where steam gathers and a cold area where clean water is stored. In the actual working conditions of some products, users will add more water to the water storage chamber 1, so the structural design needs to consider relatively extreme situations. When there is more clean water in the water storage chamber 1, it means that the space for the steam channel becomes smaller. The holes opened on the outer cover 111 or the inner cover 112 can no longer meet the steam discharge requirements. The generated steam will be confined in the steam channel due to the size of the hole diameter. What's more, the steam in the steam channel will be re-liquefied into water due to oversaturation. In order to increase the steam discharge in this case, the first hole 114 is set across the two planes of the inner cover 112 and the guide top plate 113. On the one hand, it limits the steam from being discharged preferentially from the inside of the gas collecting hood 11, and also reduces the heat exchange between the cold zone and the hot zone. On the other hand, it reduces the area of ​​the guide top plate 113, reduces the resistance when the steam rises, and is more conducive to the discharge of steam.

[0030] In this embodiment, an observation hole 117 is provided at the bottom of the inner cover 112. This hole 117 is smaller than the first hole 114 and is used to observe the operating conditions of the water storage chamber 1 at the location of the heating element 2. This hole 117 is primarily used to detect abnormal operating conditions of the water storage chamber 1 at the location of the heating element 2, such as scale accumulation, dry burning, and other abnormalities. Of course, because it is located at the bottom of the inner cover 112, it also functions as an air intake to a certain extent. When negative pressure forms in the lower portion of the steam passage, the observation hole 117 can also draw in air from the inner cover 112 area. The observation hole 117 needs to be smaller than the first hole 114 to prevent the resistance at the observation hole 117 from being lower than that at the first hole 114, thereby preventing steam from being discharged directly through the observation hole 117. This would prevent the steam from being diverted and pressurized by the steam passage, thereby preventing the steam from increasing the discharge volume and rate.

[0031] In this embodiment, the heating component 2 includes a heating plate 21 directly below the gas hood 11, and the area of ​​the heating plate 21 is less than or equal to the orthographic projection area of ​​the gas hood 11. The main purpose of this arrangement is to avoid heating in areas outside the gas hood 11. On the one hand, it improves the targeted heating of the heating plate 21, heating only the water in a specific area, so that steam is generated only in that specific area; on the other hand, it prevents the water storage chamber 1 from heating up to the same temperature as the steam channel inside the gas hood 11, thereby avoiding the failure to achieve the heat convection effect inside and outside the steam channel, thereby ensuring the steam channel's effect of accelerating and pressurizing the steam.

[0032] In this embodiment, the water storage chamber 1 also includes a mounting portion 12 formed recessed from the upper surface of the bottom of the water storage chamber 1. The outer cover 111 is detachably connected to the mounting portion 12. In similar products, because the air collection hood 11 is typically injection molded, the overall density of the air collection hood 11 is less than the density of water. This often causes the air collection hood 11 assembly to float due to excessive water in the water storage chamber 1, thereby compromising its functionality. In this embodiment, the bottom of the outer cover 111 of the air collection hood 11 is threadedly connected to the mounting portion 12, or the bottom of the outer cover 111 is snap-fitted to the mounting portion 12 via a clip / slot. This allows the outer cover 111 to be detached from the mounting portion 12, facilitating user cleaning of the water storage chamber 1 while preventing the air collection hood 11 from floating. The mounting portion 12 is sunken relative to the upper surface of the bottom of the water storage chamber 1, ensuring that all clean water in the water storage chamber 1 ultimately flows into the air collection hood 11, thereby improving the utilization rate of the clean water in the water storage chamber 1.

[0033] In this embodiment, the water storage chamber 1 further includes a plurality of support columns 13 protruding downward from the bottom surface of the water storage chamber 1. The temperature of the water storage chamber 1 during actual operation is relatively high, so it is necessary to minimize direct contact between the surface of the water storage chamber 1 and other structures. The downwardly protruding support columns 13 achieve this purpose, creating a thermally insulating gap between the water storage chamber 1 and other structures.

[0034] In this embodiment, the control component 3 includes a circuit board 32 electrically connected to the heating component 2, a heat insulation cover 31 arranged around the side of the circuit board 32, and a support ring 311 arranged on the top of the heat insulation cover 31 and abutting the water storage chamber 1 at one end; the support ring 311 is arranged at the root of the support column 13. Since the circuit board 32 and related electronic components are not resistant to high temperatures, a heat insulation structure needs to be provided. The support ring 311 is an annular structure. Since the space below the water storage chamber 1 in the actual product is relatively limited, such as the middle space has been occupied by the heating component 2, the front space is provided with structures such as the operation panel, and the rear space needs to be configured with a heat dissipation structure. Therefore, the circuit board 32 needs to be installed below the water storage chamber 1, and the circuit board 32 may not be able to avoid the support column 13 structure. The setting of the support ring 311, on the one hand, is to provide the guiding and limiting effects of the support ring 311 itself, so that technicians can insert it into the support ring 311 more conveniently and accurately during the installation process; on the other hand, it is to abut the bottom of the water storage chamber 1 so that the heat insulation cover 31 can be fixed more firmly.

[0035] In this embodiment, the heat shield 31 also includes a heat insulating sleeve 312, which extends downward from the top surface of the heat shield 31 and is sleeved around the circumference and lower end of the support column 13. Since the heat shield 31 has a circuit board 32 inside, when the support column 13 must pass through the heat shield 31, the circuit board 32 also needs to have a matching avoidance hole at the corresponding position; at the same time, the heat insulating sleeve 312 sleeved around the circumference of the support column 13 reduces the impact of the heat radiated by the support column 13 on the circuit board 32. Furthermore, the operating temperature of the support column 13 used in a local position is relatively high, and the heat insulating sleeve 312 also wraps the lower end of the support column 13, which can reduce the impact of the high-temperature support column 13 on other abutting structures, such as melting of plastic parts due to high temperature, and burns caused by accidental touch by users.

[0036] In this embodiment, the heat shield 31 also includes a stopper 313, which is protruding from the outer wall of the heat shield 31 and abuts the side wall of the support column 13. In some installation processes, the water storage chamber 1 must first be inverted before the heat shield 31 can be installed. Only after the heat shield 31 is stably placed at the bottom of the water storage chamber 1 can the circuit board 32 and other components be connected. The provision of the stopper 313 can limit the position of the heat shield 31 based on the support column 13, preventing unnecessary tipping of the heat shield 31 and improving the stability of the heat shield 31 during installation.

[0037] In some embodiments, the limiting member 313 may be two parallel columnar members having an accommodation space, and the support column 13 is clamped in the accommodation space by the two columnar members.

[0038] In this embodiment, the outer shell 4 and a plurality of mounting posts 41 protruding inwardly from the outer shell 4 are further provided. The water storage chamber 1 and the control assembly 3 are both disposed within the outer shell 4. Each mounting post 41 is threadedly connected to a corresponding support post 13. Of course, various connection methods are possible, including snap-fitting, rivet connection, welding, etc., or all support posts 13 may use a single connection method. Alternatively, a corresponding connection method may be selected based on different structural and material properties, which are conventional technical means readily apparent to those skilled in the art.

[0039] In the description of the specification, reference to the terms "one embodiment," "preferably," "example," "specific example," or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. The schematic expressions of the above terms in this specification do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any appropriate manner in any one or more embodiments or examples.

[0040] Through the description of the above structure and principle, technical personnel in the relevant technical field should understand that the present invention is not limited to the above specific implementation methods, and improvements and substitutions based on the present invention using the well-known technology in the field all fall within the scope of protection of the present invention and should be defined by the claims.

Claims

1. A steam generating device for a cooking appliance, characterized in that: The device comprises a water storage chamber for storing purified water, an air collecting cover clamped on the bottom of the water storage chamber, a first hole provided on the upper portion of the air collecting cover, a heating component provided on the lower surface of the bottom of the water storage chamber and below the air collecting cover, and a control component electrically connected to the heating component; The air collecting cover includes an outer cover body abutting against the water storage chamber, an inner cover body embedded in the outer cover body, a guide plate with two ends connected to the side walls of the outer cover body and the inner cover body, and a second hole provided near the bottom of the outer cover body; The inner cover body is a cup-shaped structure; The guide mid-plate is arranged between two adjacent first holes; and / or the guide mid-plate is arranged below the first holes.

2. The steam generating device for a cooking appliance according to claim 1, characterized in that: The air collecting hood further comprises a guide top plate, both ends of which are connected to the upper ends of the outer cover body and the inner cover body respectively; The first hole is located across two planes of the inner cover and the guide top plate.

3. The steam generating device for a cooking appliance according to claim 1, characterized in that: The top end of the second hole is higher than the bottom upper surface of the water storage chamber.

4. The steam generating device for a cooking appliance according to claim 1, characterized in that: An observation hole is provided at the bottom of the inner cover body. The observation hole is smaller than the first hole. The observation hole is used to observe the working condition of the water storage chamber at the position of the heating component.

5. The steam generating device for a cooking appliance according to any one of claims 1 to 4, characterized in that: The heating component includes a heating plate directly below the gas collecting hood, and the area of ​​the heating plate is smaller than or equal to the orthographic projection area of ​​the gas collecting hood.

6. The steam generating device for a cooking appliance according to claim 5, characterized in that: The water storage chamber further includes a mounting portion formed by sinking on the upper surface of the bottom of the water storage chamber, and the outer cover is detachably connected to the mounting portion.

7. The steam generating device for a cooking appliance according to claim 6, characterized in that: The water storage chamber further includes a plurality of support columns protruding downward from the lower surface of the bottom of the water storage chamber.

8. The steam generating device for a cooking appliance according to claim 7, characterized in that: The control assembly includes a circuit board electrically connected to the heating assembly, a heat shield arranged around the circuit board, and a support ring arranged on the top of the heat shield and having one end abutting against the water storage chamber; The support ring is arranged at the root of the support column.

9. The steam generating device for a cooking appliance according to claim 8, characterized in that: The heat insulation cover further includes a heat insulation sleeve, which extends downward from the top surface of the heat insulation cover and is sleeved on the peripheral side and the lower end of the support column.

10. The steam generating device for a cooking utensil according to claim 9 or 8, characterized in that: The heat shield further includes a limiting member, which is protruding from the outer side wall of the heat shield and abuts against the side wall of the support column.

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