Steam generator and steaming cooking equipment

Abstract

The utility model relates to a steam generator and steaming cooking equipment. The steam generator comprises a water container and a heating pipe, the water container comprises a top surface which is concavely provided with a water storage tank, the inner wall of the water storage tank is coated with an anti-scale coating, the bottom of the water storage tank is provided with heat conduction textures exposed out of the anti-scale coating, and the surface of each heat conduction texture is provided with an anti-oxidation coating; the heating pipe is arranged on the end face, away from the top face, of the water container and can transfer heat with the heat conduction texture. According to the scheme, the inner wall of the water storage tank of the water container is coated with the anti-scaling coating, so that the inner wall of the water storage tank is easy to clean and has high anti-aging performance, and the anti-oxidation coating is arranged on the surface of the heat conduction texture exposed outside the anti-scaling coating, so that the anti-aging performance of the water storage tank is improved. The anti-oxidation coating can prevent oxygen, water and other corrosive media from permeating into the metal matrix forming the heat conduction texture, so that the corrosion resistance and the anti-rust performance of the surface of the heat conduction texture are improved, and the problem that in the prior art, a steam generator is prone to oxidation and rusting is solved.

Description

Technical Field

[0001] The present application relates to the technical field of cooking equipment, and in particular to a steam generator and a steam cooking equipment. Background Art

[0002] The steam generator is an important component for generating steam in a steam cooking device. The steam generator used in a steam cooking device such as a steam box or a steaming machine is usually a heating plate, which is arranged in an inner pot, and water in a water tank is directly input into a water container of the heating plate, and the water is directly heated into steam in the inner pot for cooking food. However, the existing steam generator is very easy to oxidize and rust due to long-term contact with water. Summary of the invention

[0003] Based on this, it is necessary to provide a steam generator and a steam cooking device to address the problem that the surface of the steam generator in the existing steam cooking device is prone to rust.

[0004] A steam generator comprises a water container and a heating pipe, the water container comprises a top surface with a water storage tank recessed therein, the inner wall of the water storage tank is coated with an anti-scaling coating, and the bottom of the water storage tank is provided with a thermal conductive texture exposed outside the anti-scaling coating, and the surface of the thermal conductive texture is provided with an anti-oxidation coating; the heating pipe is arranged on the end surface of the water container facing away from the top surface, and the heating pipe can transfer heat with the thermal conductive texture.

[0005] In one embodiment, the anti-oxidation coating is formed by passivating the surface of the thermal conductive texture.

[0006] In one of the embodiments, the thermal conductive texture protrudes from the groove bottom, and the height difference between the thermal conductive texture and the groove bottom is in the range of 0.1 mm-0.15 mm.

[0007] In one of the embodiments, the thermal conductive texture and the groove bottom are an integral structure, and the height difference is formed by corrosion of an area of ​​the groove bottom except the thermal conductive texture.

[0008] In one of the embodiments, the groove bottom includes a heating zone aligned with the heating tube, and at least the heating zone in the groove bottom is provided with the heat-conducting texture.

[0009] In one of the embodiments, the area of ​​the groove bottom covered by the thermal conductive texture is a, and the area of ​​the groove bottom is A, wherein a>0.1A.

[0010] In one embodiment, the anti-fouling coating is coated with at least two layers.

[0011] In one embodiment, the thermal conductive texture is exposed through a breach in the anti-fouling coating, and the breach is formed by grinding the anti-fouling coating.

[0012] In one embodiment, the thermally conductive texture includes a plurality of thermally conductive grids and thermally conductive protrusions respectively located in each of the thermally conductive grids.

[0013] A steaming cooking device comprises the steam generator as described in any one of the above embodiments.

[0014] In the above scheme, an anti-scaling coating is applied on the inner wall of the water tank of the water container, so that the inner wall of the water tank is easy to clean and has strong anti-aging performance, thereby improving the service life of the steam generator. An anti-oxidation coating is provided on the surface of the thermal conductive texture exposed outside the anti-scaling coating, so that the anti-oxidation coating can prevent oxygen, moisture and other corrosive media from penetrating into the metal matrix constituting the thermal conductive texture, thereby improving the corrosion resistance and rust resistance of the surface of the thermal conductive texture, thereby solving the problem of easy oxidation and rusting of the steam generator in the prior art. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 Schematic diagram of the structure of a steam generator in one embodiment of the present application.

[0016] Figure 2 for Figure 1 Schematic cross-section of the steam generator.

[0017] Figure 3 for Figure 2 Enlarged schematic diagram at point C in the middle.

[0018] Description of reference numerals:

[0019] 100. Steam generator; 110. Water container; 111. Top surface; 112. Bottom surface; 113. Water storage tank; 1131. Side wall; 1132. Tank bottom; 114. Thermal conductive texture; 1141. Thermal conductive grid; 1142. Thermal conductive bumps; 120. Heating tube. DETAILED DESCRIPTION

[0020] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present application, so the present application is not limited by the specific embodiments disclosed below.

[0021] In the description of the present application, it should be understood that if the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. appear, the orientation or position relationship indicated by these terms is based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application.

[0022] In addition, if the terms "first" or "second" appear, these terms are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of this application, if the term "plurality" appears, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0023] In this application, unless otherwise clearly specified and limited, if the terms "installed", "connected", "connected", "fixed" and the like appear, these terms should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to the specific circumstances.

[0024] In the present application, unless otherwise clearly specified and limited, if there is a description that a first feature is "above" or "below" a second feature, etc., or similar descriptions appear, it may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "above" and "above" the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. The first feature being "below", "below" and "below" the second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0025] It should be noted that if an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. If an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. If any, the terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used in this application are for illustrative purposes only and do not represent the only implementation method.

[0026] The present application provides a steam cooking device, such as a steamer, a steam-bake combination machine, etc. In this embodiment, the steam cooking device includes an inner pot with a cooking cavity, and also includes a steam generator 100 as described in any of the following embodiments, the steam generator 100 is connected to the inner pot and is located in the cooking cavity, and is used to heat water to generate steam.

[0027] See also Figure 1 , Figure 1 A structural schematic diagram of a steam generator 100 in an embodiment of the present application is shown. A steam generator 100 provided in an embodiment of the present application is applied to a steam cooking device, and is used to generate steam by heating water to steam food in a cooking cavity.

[0028] like Figure 1 As shown, the steam generator 100 includes a water container 110 and a heating tube 120. The water container 110 includes a top surface 111 with a water storage tank 113 recessed therein. The water storage tank 113 can hold water for generating steam. In this embodiment, the water container 110 is a disc-shaped structure. In other embodiments, the water container 110 can also be a bowl-shaped, can-shaped, or other structure. In this embodiment, the water container 110 is a stainless steel part for example. In other embodiments, the water container 110 can also be other heat-conducting material parts, such as iron.

[0029] The inner wall of the water storage tank 113 is coated with an anti-scaling coating, wherein the inner wall includes Figure 1 and Figure 2 The bottom 1132 and the side wall 1131 of the water storage tank 113 are shown. In some embodiments, the anti-fouling coating is composed of materials such as polyurethane, which has strong waterproof and anti-fouling capabilities, so that the inner wall of the water storage tank 113 coated with the anti-fouling coating is easy to clean.

[0030] In one embodiment, the anti-fouling coating is coated with at least two layers, namely a primer and a topcoat, so that the primer is protected by the topcoat to prevent the primer from being scratched, which may reduce the easy-to-clean performance, and cause aging and shortening of the coating life.

[0031] However, the anti-scaling coating will affect the thermal conductivity of the bottom 1132 of the water storage tank 113 to a certain extent. Figure 1 and Figure 2 As shown, the bottom 1132 of the water storage tank 113 is provided with a heat-conductive texture 114 exposed outside the anti-scaling coating, and there is no anti-scaling coating on the surface of the heat-conductive texture 114, so that the water container 110 mainly heats and evaporates the water in the water storage tank 113 through the heat-conductive texture 114.

[0032] The thermal conductive texture 114 is exposed outside the anti-scaling coating, which is prone to surface corrosion and oxidation problems. In this embodiment, the surface of the thermal conductive texture 114 is provided with an anti-oxidation coating, which can be an oxide film formed by oxidizing the surface of the thermal conductive texture 114, or it can be any coating with anti-oxidation and anti-corrosion functions in the prior art.

[0033] In one embodiment, the anti-oxidation coating is formed by passivating the surface of the thermal conductive texture 114. By passivating the surface of the thermal conductive texture 114, a dense and stable oxide film is formed on the surface of the thermal conductive texture 114 to prevent oxygen, moisture and other corrosive media from penetrating into the metal matrix constituting the thermal conductive texture 114, thereby improving the corrosion resistance and rust resistance of the surface of the thermal conductive texture 114.

[0034] like Figure 3 As shown, in one embodiment, the thermal conductive texture 114 protrudes from the groove bottom 1132 to protect the groove bottom 1132 to avoid scratching the groove bottom 1132, and the height difference H between the thermal conductive texture 114 and the groove bottom 1132 ranges from 0.1mm to 0.15mm. When the height difference H is lower than 0.1mm, the thermal conductive texture 114 cannot protect the groove bottom 1132 to avoid scratching the groove bottom 1132. At the same time, when the height difference H is greater than 0.15mm, the thermal conductive texture 114 interferes with the coating of the anti-scaling coating on the groove bottom 1132 and the side wall 1131 of the water storage tank 113, thereby making it difficult to coat the corner positions, such as the corner where the thermal conductive texture 114 connects to the groove bottom 1132.

[0035] In one embodiment, the heat-conducting texture 114 and the groove bottom 1132 are an integral structure, and the height difference H is formed by the corrosion of the area of ​​the groove bottom 1132 other than the heat-conducting texture 114. The heat-conducting texture 114 is formed by the etching process, and the thickness of the area of ​​the groove bottom 1132 other than the heat-conducting texture 114 is reduced, which can reduce the heat transfer thickness between the heating tube 120 and the water in the water storage tank 113, thereby improving the heating efficiency of the heating tube 120. When the steam generator 100 is heated and water is injected for cooling, the temperature change may cause the water container 110 to deform, and in severe cases, it may cause the connection between the water container 110 and the heating tube 120 to crack. The etching process reduces the thickness of the groove bottom 1132 of the water container 110, and the rigidity of the water container 110 itself will be weakened, thereby reducing the risk of deformation and cracking of the water container 110.

[0036] In one embodiment, the area of ​​the groove bottom 1132 covered by the heat conductive texture 114 is a, and the area of ​​the groove bottom 1132 is A, wherein a>0.1A, so as to avoid the heat generated by the heating tube 120 being wasted due to too few heat conductive textures 114. It is understandable that the area of ​​the groove bottom 1132 covered by the heat conductive texture 114 cannot be too large. In this embodiment, the area of ​​the groove bottom 1132 covered by the heat conductive texture 114 is a≤0.3A, so as to avoid the problem of easy cracking and deformation caused by the excessive rigidity of the water container 110, and also avoid the problem of difficulty in cleaning caused by too small an area covered by the anti-scaling coating.

[0037] In one embodiment, the thermal conductive texture 114 is exposed through a breach in the anti-scaling coating, and the breach is formed by grinding the anti-scaling coating. That is, in the production process of the steam generator 100, the bottom 1132 of the water storage tank 113 of the water container 110 is first etched to obtain a thermal conductive texture 114 with a height difference H of 0.1 mm to 0.15 mm, and then the anti-scaling coating is coated on the bottom 1132 and the side wall 1131 of the water storage tank 113, and the thermal conductive texture 114 is not avoided during the coating process to facilitate coating, so that the bottom 1132 and the side wall 1131 of the water storage tank 113 can be easily cleaned and not easily aged. Afterwards, by grinding the thermal conductive texture 114 with a higher height, the anti-scaling coating on the surface of the thermal conductive texture 114 is worn off, so that the thermal conductive effect at the thermal conductive texture 114 is not interfered by the anti-scaling coating. Then, in order to clean the water container 110 and passivate the thermal conductive texture 114 , an anti-oxidation coating is formed on the surface of the thermal conductive texture 114 .

[0038] like Figure 3 As shown in one embodiment, the thermal conductive texture 114 includes a plurality of thermal conductive grids 1141 and thermal conductive bumps 1142 respectively located in each thermal conductive grid 1141. Figure 3 In the illustrated embodiment, the projection shape of the heat-conducting grid 1141 on the groove bottom 1132 is a hexagonal structure, and the projection shape of the heat-conducting bump 1142 on the groove bottom 1132 is a circular structure. In other embodiments, the projection shape of the heat-conducting grid 1141 on the groove bottom 1132 may also be a circle or other polygonal structures, and the projection shape of the heat-conducting bump 1142 on the groove bottom 1132 may also be a polygonal structure.

[0039] like Figure 1 and Figure 2 As shown, the heating pipe 120 is disposed on the end surface of the water container 110 away from the top surface 111, that is, Figure 1 and Figure 2The heating pipe 120 is connected to the bottom surface 112 of the water container 110. For example, in this embodiment, the heating pipe 120 is welded to the bottom surface 112 of the water container 110. At the same time, the heating pipe 120 can transfer heat with the heat conductive texture 114 to heat and evaporate the water in the water storage tank 113 through the heat conductive texture 114.

[0040] In one embodiment, the groove bottom 1132 includes a heating zone aligned with the heating tube 120, and at least the heating zone in the groove bottom 1132 is provided with a thermal conductive texture 114 so that the heat generated by the heating tube 120 can be transferred to the thermal conductive texture 114 as quickly as possible, so as to heat and evaporate the water in the water storage tank 113 through the thermal conductive texture 114.

[0041] In the above scheme, an anti-scaling coating is applied on the inner wall of the water tank 113 of the water container 110, so that the inner wall of the water tank 113 is easy to clean and has strong anti-aging performance, thereby improving the service life of the steam generator 100, and an anti-oxidation coating is provided on the surface of the thermal conductive texture 114 exposed outside the anti-scaling coating, so that the anti-oxidation coating can prevent oxygen, moisture and other corrosive media from penetrating into the metal matrix constituting the thermal conductive texture 114, thereby improving the corrosion resistance and rust resistance of the surface of the thermal conductive texture 114, thereby solving the problem of easy oxidation and rusting of the steam generator 100 in the prior art.

[0042] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0043] The above-described embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be construed as limiting the scope of the patent application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent application shall be subject to the attached claims.

Claims

1. A steam generator, characterized in that: The steam generator (100) comprises: A water container (110), the water container (110) comprising a top surface (111) having a water storage tank (113) recessed therein, the inner wall of the water storage tank (113) being coated with an anti-scaling coating, and a bottom (1132) of the water storage tank (113) being provided with a heat-conducting texture (114) exposed outside the anti-scaling coating, and a surface of the heat-conducting texture (114) being provided with an anti-oxidation coating; A heating tube (120), wherein the heating tube (120) is arranged on the end surface of the water container (110) away from the top surface (111), and the heating tube (120) is capable of transferring heat with the heat-conducting texture (114).

2. The steam generator according to claim 1, characterized in that: The anti-oxidation coating is formed by passivating the surface of the thermal conductive texture (114).

3. The steam generator according to claim 1, characterized in that: The heat conductive texture (114) protrudes from the groove bottom (1132), and the height difference between the heat conductive texture (114) and the groove bottom (1132) ranges from 0.1 mm to 0.15 mm.

4. The steam generator according to claim 3, characterized in that: The thermal conductive texture (114) and the groove bottom (1132) are an integral structure, and the height difference is formed by corrosion of a region of the groove bottom (1132) other than the thermal conductive texture (114).

5. The steam generator according to claim 1, characterized in that: The groove bottom (1132) comprises a heating zone aligned with the heating tube (120), and at least the heating zone in the groove bottom (1132) is provided with the heat-conducting texture (114).

6. The steam generator according to claim 5, characterized in that: The area of ​​the groove bottom (1132) covered by the thermal conductive texture (114) is a, and the area of ​​the groove bottom (1132) is A, wherein a>0.1A.

7. The steam generator according to claim 1, characterized in that: The anti-fouling coating is coated with at least two layers.

8. The steam generator according to claim 1, characterized in that: The heat conductive texture (114) is exposed through a breach in the anti-fouling coating, and the breach is formed by grinding the anti-fouling coating.

9. The steam generator according to claim 1, characterized in that: The heat-conducting texture (114) comprises a plurality of heat-conducting grids (1141) and heat-conducting protrusions (1142) respectively located in each of the heat-conducting grids (1141).

10. A steaming cooking device, characterized in that: It comprises the steam generator (100) as claimed in any one of claims 1 to 9.

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