Steam generator and electric appliance

Abstract

This application provides a steam generator and electrical equipment. The steam generator includes an evaporation device and a first heating device disposed outside the evaporation device. The evaporation device includes a first shell, a second shell, and baffles. The first shell and the second shell are fastened together to define a closed space with an inlet and an outlet. The inlet is close to a first end of the evaporation device along a first direction, and the centerline of the outlet extending along a second direction is located on the side of the centerline of the inlet extending along the second direction away from the first end. The second direction is perpendicular to the first direction. The baffles divide the closed space into multiple water channels spaced apart along the second direction and sequentially connected along the water flow direction. The first water channel along the water flow direction is connected to the inlet, and the last water channel along the water flow direction is connected to the outlet. The first heating device is in contact with the evaporation device. The steam generator of this application embodiment can reduce the occurrence of water leakage.

Description

Technical Field

[0001] This application relates to the field of electrical equipment technology, and more particularly to a steam generator and electrical equipment. Background Technology

[0002] Currently, steam generators are widely used in home appliances such as cooking and clothing care, serving as the core heating module for products like garment steamers, steam rice cookers, steam pressure cookers, steam blenders, instant kettles, and coffee machines. When a steam generator is working, its water tank is typically filled with water, which is then pumped into the generator body via a water pump or gravity to evaporate and form steam. The steam is then piped to the cooking chamber of cooking equipment or the nozzle of clothing care products.

[0003] In related technologies, there is a type of steam generator whose evaporation device is made of two shells joined together, with a water channel formed between the two shells. However, it is difficult to achieve a complete seal at the joint between the two shells. At the same time, due to the unreasonable placement of the inlet and outlet of the water channel, some of the water flow and / or steam in the water channel can easily flow out from the joint between the two shells near the outlet, resulting in water leakage. Summary of the Invention

[0004] In view of this, the present application aims to provide a steam generator and electrical equipment that can reduce water leakage.

[0005] To achieve the above objectives, one embodiment of this application provides a steam generator, comprising:

[0006] An evaporation device includes a first housing, a second housing, and baffles. The first housing and the second housing are fastened together to define a closed space having an inlet and an outlet. The inlet is close to a first end of the evaporation device along a first direction. The centerline of the outlet extending along a second direction is located on the side of the centerline of the inlet extending along the second direction away from the first end. The second direction is perpendicular to the first direction. The baffles divide the closed space into a plurality of water channels spaced apart along the second direction and sequentially connected along the direction of water flow. The first water channel along the direction of water flow is connected to the inlet, and the last water channel along the direction of water flow is connected to the outlet.

[0007] A first heating device is disposed outside the evaporator, and the first heating device transfers heat to the evaporator through contact.

[0008] In one embodiment, the number of waterways is an even number;

[0009] The outlet is located at the beginning of the last of the even-numbered waterways in the direction of water flow; or,

[0010] The outlet is located near the beginning of the last of the even-numbered waterways in the direction of water flow; or,

[0011] The outlet is located near the end of the last of the even-numbered waterways in the direction of water flow.

[0012] In one embodiment, the number of waterways is an odd number;

[0013] The outlet is located at the end of the last of the odd-numbered waterways in the direction of water flow; or,

[0014] The outlet is located near the end of the last of the odd-numbered waterways in the direction of water flow; or,

[0015] The outlet is located near the beginning of the last of the odd-numbered waterways in the direction of water flow.

[0016] In one embodiment, a portion of the first housing protrudes to form the baffle rib, and the baffle rib is in sealing contact with, welded to, or bonded to the second housing; and / or,

[0017] A portion of the second housing protrudes to form the baffle, which is in sealing contact with, welded to, or bonded to the first housing.

[0018] In one embodiment, the baffle is sandwiched between the first housing and the second housing, and the baffle is welded or bonded to one of the first housing and the second housing, and is in sealing contact, welded or bonded to the other of the first housing and the second housing.

[0019] In one embodiment, the first heating device includes a first heat transfer element and a first heating assembly, wherein the first heat transfer element is in contact with one of the first housing and the second housing, and the first heating assembly is in contact with the first heat transfer element.

[0020] In one embodiment, the first housing has a receiving groove, one side of which is open, and the second housing covers the open portion of the receiving groove so that the receiving groove forms the closed space; the first heat transfer element covers the outer end face and outer side wall of the first housing; or,

[0021] The second housing has a receiving groove, one side of which is open. The first housing covers the open part of the receiving groove so that the receiving groove forms the closed space. The first heat transfer element covers the outer end face and outer side wall of the second housing.

[0022] In one embodiment, the first heating device is in contact with one of the first housing and the second housing;

[0023] The steam generator further includes a second heating device, which comprises a second heating assembly that contacts another of the first housing and the second housing; or,

[0024] The second heating device includes a second heat transfer element and a second heating assembly. The second heat transfer element is in contact with the other of the first housing and the second housing, and the second heating assembly is in contact with the second heat transfer element.

[0025] In one embodiment, the first housing has a stainless steel layer and an aluminum layer, the aluminum layer being located on the side of the stainless steel layer facing away from the enclosed space, and the first heating device being in contact with the aluminum layer; or,

[0026] The second housing has a stainless steel layer and an aluminum layer, with the aluminum layer located on the side of the stainless steel layer away from the enclosed space, and the first heating device in contact with the aluminum layer.

[0027] In one embodiment, the evaporation device is made of any one of aluminum, aluminum alloy, and stainless steel; and / or,

[0028] The evaporation device has a food-grade protective layer that covers the inner wall of the waterway; and / or,

[0029] The first heating device includes a heating element, the housing of which is made of any one of aluminum, aluminum alloy and stainless steel; or, the housing of the heating element includes an outer shell and an inner shell fitted inside the outer shell, the outer shell being made of aluminum or aluminum alloy and the inner shell being made of stainless steel.

[0030] In one embodiment, the cross-sectional area of ​​the waterway is greater than or equal to 18 square millimeters.

[0031] In one embodiment, at least a portion of the outline of the cross-section of the waterway is a straight line segment.

[0032] In one embodiment, the cross-sectional shape of the waterway is rectangular, trapezoidal, or triangular; or,

[0033] The outline of the cross-section of the waterway includes curved segments and straight segments, with the curved segments and straight segments connected end to end.

[0034] Another embodiment of this application provides a steam generator, including:

[0035] An evaporation device includes a first shell, a second shell, and baffles. At least one of the first shell and the second shell has a stainless steel layer and an aluminum layer. The first shell and the second shell are fastened together to define a closed space having an inlet and an outlet. The aluminum layer is located on the side of the stainless steel layer facing away from the closed space. The inlet is close to a first end of the evaporation device along a first direction. The centerline of the outlet extending along a second direction is located on the side of the centerline of the inlet extending along the second direction facing away from the first end. The second direction is perpendicular to the first direction. The baffles divide the closed space into a plurality of water channels spaced apart along the second direction and sequentially connected along the direction of water flow. The first water channel along the direction of water flow is connected to the inlet, and the last water channel along the direction of water flow is connected to the outlet.

[0036] A first heating device is disposed outside the evaporation device, and the first heating device transfers heat to the aluminum material layer through contact.

[0037] Another embodiment of this application provides an electrical device including the steam generator described above.

[0038] In one embodiment, the electrical appliance is any one of the following: garment steamer, electric iron, steam mop, steam wallpapering machine, coffee machine, milk maker, instant water kettle, water dispenser, steam pressure cooker, steam rice cooker, electric steamer, steam oven, steam blender, electric steamer, steam air fryer, dishwasher, and washing machine.

[0039] This application provides a steam generator and electrical equipment. The inlet of the evaporation device is located near the first end of the evaporation device along a first direction, and the center line of the outlet extending along a second direction is located on the side away from the first end from the center line of the inlet extending along the second direction. This means that the outlet is located further away from the first end than the inlet. As a result, the impact of hot water or steam flowing to the vicinity of the outlet on the first end can be reduced, and the combined force exerted by the water flow near the inlet and the hot water or steam near the outlet on the first end can be reduced, thereby reducing the occurrence of water leakage. Attached Figure Description

[0040] Figure 1 This is a schematic diagram of the structure of a steam generator according to an embodiment of this application;

[0041] Figure 2 for Figure 1 The front view of the steam generator shown;

[0042] Figure 3 for Figure 2 The left view;

[0043] Figure 4 for Figure 2 The diagram shows the first shell structure.

[0044] Figure 5 for Figure 2 The rear view shows the direction of water flow indicated by the dashed arrows.

[0045] Figure 6 for Figure 2 AA section view;

[0046] Figure 7 for Figure 2 BB cross-sectional view;

[0047] Figure 8 This is a schematic diagram of the structure of a second type of steam generator according to an embodiment of this application. The arrows with dashed lines in the diagram indicate the direction of water flow.

[0048] Figure 9 This is a schematic diagram of the structure of a third type of steam generator according to an embodiment of this application. The arrows with dashed lines in the diagram indicate the direction of water flow.

[0049] Figure 10 This is a schematic diagram of the structure of a fourth type of steam generator according to an embodiment of this application. The arrows with dashed lines in the diagram indicate the direction of water flow.

[0050] Figure 11 This is a cross-sectional view of the fifth type of steam generator according to an embodiment of this application. The cutting position is... Figure 2 The positions of AA are the same;

[0051] Figure 12 This is a cross-sectional view of the sixth type of steam generator according to an embodiment of this application. The cutting position is... Figure 2 The positions of AA are the same;

[0052] Figure 13 for Figure 12 The steam generator shown is a cross-sectional view from another angle, with the cutting position being the same as... Figure 2 The positions of BB are the same;

[0053] Figure 14 This is a cross-sectional view of the seventh type of steam generator according to an embodiment of this application. The cutting position is... Figure 2 The positions of AA are the same;

[0054] Figure 15 for Figure 14 The steam generator shown is a cross-sectional view from another angle, with the cutting position being the same as... Figure 2 The positions of BB are the same;

[0055] Figure 16This is a cross-sectional view of the eighth steam generator according to an embodiment of this application. The cutting position is... Figure 2 The positions of BB and BB are the same.

[0056] Explanation of reference numerals in the attached figures

[0057] Evaporation device 10; water channel 10a; inlet 10b; outlet 10c; straight section 10d; curved section 10e; first end 10f; second end 10g; first shell 11; receiving tank 11a; second shell 12; baffle 13; first heating device 20; first heat transfer element 21; edging 21a; first heating assembly 22; second heating device 30; second heat transfer element 31; second heating assembly 32; thermostat 40; temperature limiter 50. Detailed Implementation

[0058] It should be noted that, unless otherwise specified, the embodiments and technical features in the embodiments of this application can be combined with each other, and the detailed descriptions in the specific implementation should be understood as explanations of the purpose of this application and should not be regarded as undue limitations on this application.

[0059] In the description of this application, the orientation or positional relationship of "first direction" and "second direction" is based on the appendix. Figure 5 The orientations or positional relationships shown are intended only for the convenience of describing this application and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0060] One embodiment of this application provides a steam generator; please refer to [link / reference]. Figures 1 to 3 , Figure 5 The steam generator includes an evaporation device 10 and a first heating device 20. The evaporation device 10 includes a first housing 11, a second housing 12, and a baffle 13. The first housing 11 and the second housing 12 are fastened together to define a closed space having an inlet 10b and an outlet 10c. The inlet 10b is close to a first end 10f of the evaporation device 10 along a first direction. The centerline C2 of the outlet 10c extending along a second direction is located on the side of the centerline C1 of the inlet 10b extending along the second direction away from the first end 10f. The second direction is perpendicular to the first direction. The baffle 13 divides the enclosed space into multiple water channels 10a that are spaced apart along the second direction and connected sequentially along the direction of water flow. That is, the water flow direction is opposite in two adjacent water channels 10a. The first water channel 10a along the direction of water flow is connected to the inlet 10b, and the last water channel 10a along the direction of water flow is connected to the outlet 10c. The first heating device 20 is set outside the evaporation device 10, and the first heating device 20 and the evaporation device 10 transfer heat through contact.

[0061] Another embodiment of this application also provides an electrical device, which includes the steam generator provided in any embodiment of this application.

[0062] The electrical equipment in this application embodiment can be any electrical equipment that requires the use of a steam generator. For example, the electrical equipment can be a garment steamer, electric iron, steam mop, steam wallpapering machine, coffee machine, milk maker, instant water kettle, water dispenser, steam pressure cooker, steam rice cooker, electric steamer, steam oven, steam blender, electric steamer, steam air fryer, dishwasher and washing machine.

[0063] When the steam generator is working, water flows into the water channel 10a from the inlet 10b and exchanges heat with the heat transferred from the first heating device 20 to the evaporation device 10. Depending on the different usage requirements of the electrical equipment, after the water in the water channel 10a exchanges heat with the heat transferred from the first heating device 20 to the evaporation device 10, it can be heated into hot water or steam, and the hot water or steam flows out from the outlet 10c.

[0064] The inlet 10b is close to the first end 10f of the evaporator 10 along the first direction, which means that the inlet 10b is located approximately close to the first end 10f. After the water flows from the inlet 10b into the first water channel 10a, it mainly flows towards the outlet 10c.

[0065] The fact that the center line C2 of the outlet 10c extending along the second direction is located on the side away from the first end 10f of the center line C1 of the inlet 10b extending along the second direction means that the location of the outlet 10c is farther from the first end 10f than the location of the inlet 10b. It should be noted that the situation where the center line C2 of the outlet 10c extending along the second direction is too close to the center line C1 of the inlet 10b extending along the second direction, resulting in a negligible error range in their relative positions, is not considered here.

[0066] In related technologies, the inlet and outlet of the evaporation device of a steam generator are generally located near the first end of the evaporation device along the first direction, and the distance between the inlet and the first end and the distance between the outlet and the first end are roughly the same. However, it is difficult to achieve a complete seal at the joint between the two shells of the evaporation device, and the water will exert a certain force on the first end of the evaporation device during the flow of water in the water channel. Studies have found that when the distance between the inlet and the first end and the distance between the outlet and the first end are roughly the same, the combined force exerted by the water flow near the inlet and the hot water or steam near the outlet on the first end is relatively large. Some of the hot water or steam with higher temperature flowing to the outlet is prone to flow out from the joint at the first end, resulting in water leakage.

[0067] In this embodiment of the application, the inlet 10b of the evaporator 10 is located near the first end 10f of the evaporator 10 along the first direction, and the center line C2 of the outlet 10c extending along the second direction is located on the side away from the first end 10f from the center line C1 of the inlet 10b extending along the second direction. This means that the outlet 10c is located further away from the first end 10f than the inlet 10b. As a result, the impact of hot water or steam flowing to the vicinity of the outlet 10c on the first end 10f can be reduced, and the combined force exerted by the water flow near the inlet 10b and the hot water or steam near the outlet 10c on the first end 10f can be reduced, thereby reducing the occurrence of water leakage.

[0068] The location of the outlet 10c can be varied. For example, in one embodiment, please refer to... Figures 5 to 7 The number of waterways 10a is an even number. Figure 5 The dashed lines in the diagram represent water flowing from inlet 10b into the first channel 10a and out through outlet 10c on the last channel 10a after being heated into hot water or steam. The outlet 10c can be located at the beginning of the last channel 10a in the even-numbered channel 10a along the direction of water flow. That is, the outlet 10c can be as close as possible to the second end 10g of the evaporator 10 along the first direction, so that the outlet 10c and the inlet 10b are diagonally arranged. Most of the hot water or steam flowing to the vicinity of the outlet 10c flows out from the outlet 10c, and a small amount of hot water or steam continues to flow towards the end of the last channel 10a. Since only a small amount of hot water or steam continues to flow towards the end of the last channel 10a, the force exerted by the small amount of hot water or steam on the first end 10f is small. The combined force exerted by the water flow near inlet 10b and the hot water or steam near outlet 10c on the first end 10f is also small. Therefore, the occurrence of water leakage can be greatly reduced.

[0069] In some embodiments, please refer to Figure 8 The outlet 10c can also be close to the beginning of the last waterway 10a in the even-numbered waterways 10a along the direction of water flow. That is, the outlet 10c is relatively close to the beginning of the last waterway 10a, but not located at the beginning of the last waterway 10a. Alternatively, please refer to... Figure 9 The outlet 10c can also be close to the end of the last waterway 10a in the even number of waterways 10a along the direction of water flow. That is, provided that the center line C2 of the outlet 10c extending in the second direction is located on the side of the center line C1 of the inlet 10b extending in the second direction away from the first end 10f, the outlet 10c can also be relatively close to the first end 10f.

[0070] In another embodiment, please refer to Figure 10It can also mean that the number of waterways 10a is odd. Figure 10 The dotted line in the diagram represents the water flow from the inlet 10b into the first channel 10a and out through the outlet 10c on the last channel 10a after being heated into hot water or steam. The outlet 10c is located at the end of the last channel 10a in the odd-numbered channel flow direction. This arrangement also allows the outlet 10c to be as close as possible to the second end 10g of the evaporator 10 in the first direction, so that the outlet 10c and the inlet 10b are diagonally positioned. Although the hot water or steam flowing near the outlet 10c will have some impact on the second end 10g, since the inlet 10b and the outlet 10c are located at the first end 10f and the second end 10g respectively, the water flow near the inlet 10b and the hot water or steam near the outlet 10c cannot exert a force on the first end 10f or the second end 10g together. Therefore, the occurrence of water leakage can be greatly reduced.

[0071] In addition, compared with setting an even number of waterways 10a, setting an odd number of waterways 10a and having the outlet 10c located at the end of the last waterway 10a in the direction of water flow among the odd number of waterways 10a can make full use of the length of the last waterway 10a and reduce the waste of the length of the last waterway 10a.

[0072] In some embodiments, the outlet 10c may also be close to the end of the last waterway 10a in the odd number of waterways 10a along the direction of water flow. This means that the outlet 10c is relatively close to the end of the last waterway 10a, but not located at the end of the last waterway 10a. Alternatively, the outlet 10c may also be close to the beginning of the last waterway 10a in the odd number of waterways 10a along the direction of water flow. That is, provided that the center line C2 of the outlet 10c extending in the second direction is located on the side of the center line C1 of the inlet 10b extending in the second direction away from the first end 10f, the outlet 10c may also be relatively close to the first end 10f.

[0073] In some embodiments, regardless of whether the number of waterways 10a is even or odd, the outlet 10c can be located on the center line of the last waterway 10a extending in the second direction along the direction of water flow.

[0074] The number of baffles 13 in this application embodiment can be one or more. However, the more water channels 10a separated by the baffles 13, the longer the water flow path from the inlet 10b to the outlet 10c. This extends the flow of water in the water channel 10a, so that the water can be fully heated in the water channel 10a, thereby improving the heat transfer efficiency.

[0075] In addition, to improve the ability to prevent scale buildup, the cross-sectional area of ​​water channel 10a can be appropriately increased. For example, the cross-sectional area of ​​water channel 10a can be greater than or equal to 18 square millimeters.

[0076] There are various ways to form an enclosed space. For example, in one embodiment, please refer to... Figure 2 and Figure 4 The first housing 11 has a receiving groove 11a, one side of which is open. An inlet 10b and an outlet 10c are formed on the second housing 12, which covers the opening of the receiving groove 11a so that the receiving groove 11a forms a closed space.

[0077] In another embodiment, the second housing 12 may have a receiving groove 11a, an inlet 10b and an outlet 10c formed on the first housing 11, and the first housing 11 covers the open part of the receiving groove 11a so that the receiving groove 11a forms a closed space.

[0078] In some embodiments, the first housing 11 and the second housing 12 may each have a receiving groove 11a, and the receiving groove 11a of the first housing 11 and the receiving groove 11a of the second housing 12 together form a closed space.

[0079] In addition, it should be noted that the inlet 10b and the outlet 10c are not limited to being formed on the first housing 11 or the second housing 12 at the same time. Regardless of whether the first housing 11 and / or the second housing 12 are provided with a receiving groove 11a, the inlet 10b can be formed on the first housing 11 or the second housing 12, and the outlet 10c can also be formed on the first housing 11 or the second housing 12.

[0080] There are various ways to arrange the retaining rib 13. For example, in one embodiment, please refer to... Figure 1 and Figure 7 A portion of the second housing 12 protrudes to form a baffle 13, which means that the second housing 12 and the baffle 13 are an integral structure, and the baffle 13 is formed by processing a portion of the second housing 12.

[0081] The baffle 13 and the first housing 11 can be in sealed contact by means of line contact, surface contact, etc. The baffle 13 and the first housing 11 can also be welded or bonded with solid sealant or liquid adhesive.

[0082] In some embodiments, a portion of the first housing 11 may protrude to form a baffle 13, and the baffle 13 on the first housing 11 may be in sealed contact, welded or bonded to the second housing 12. Alternatively, a portion of the first housing 11 and a portion of the second housing 12 may each protrude to form a baffle 13, wherein the baffle 13 on the first housing 11 may be in sealed contact, welded or bonded to the second housing 12, the baffle 13 on the second housing 12 may be in sealed contact, welded or bonded to the first housing 11, and the baffle 13 on the first housing 11 may also be in sealed contact, welded or bonded to the baffle 13 on the second housing 12.

[0083] In another embodiment, please refer to Figures 12 to 16 The baffle 13 can also be sandwiched between the first housing 11 and the second housing 12, and connected to at least one of the first housing 11 and the second housing 12. That is to say, the baffle 13, the first housing 11 and the second housing 12 are separate structures that are processed separately. The baffle 13 can be connected to the first housing 11, or to the second housing 12, or to both the first housing 11 and the second housing 12 at the same time. For example, the baffle 13 can be welded or bonded to one of the first housing 11 and the second housing 12, and can be in sealing contact, welded or bonded to the other of the first housing 11 and the second housing 12.

[0084] In addition, regardless of the arrangement of the retaining rib 13, the first shell 11 and the second shell 12 can be connected into an integral structure by welding or bonding.

[0085] To improve heat transfer efficiency, the evaporator 10 can be made of materials with good heat transfer properties. For example, the material of the evaporator 10 can be aluminum, aluminum alloy, stainless steel, etc. Among them, the steam generator made of stainless steel can be used in cooking appliances that need to directly contact the generated steam with food.

[0086] In addition, regardless of whether the evaporator 10 is made of stainless steel, the inner wall of the water channel 10a can be covered with a food-grade protective layer. The food-grade protective layer can be sprayed onto the inner surface of the first housing 11, the inner surface of the second housing 12, and the baffle 13.

[0087] There are various processing methods for the evaporation device 10. For example, the evaporation device 10 can be a stamping component. That is, when the first shell 11 has a baffle 13 and / or the second shell 12 has a baffle 13, the first shell 11 and the baffle 13 on the first shell 11, the second shell 12 and the baffle 13 on the second shell 12 can all be processed by stamping. When the baffle 13, the first shell 11 and the second shell 12 are separate structures that are processed separately, the baffle 13, the first shell 11 and the second shell 12 can be processed by stamping respectively. The stamping production process is simple and convenient, which can further improve production efficiency and reduce production costs.

[0088] In some embodiments, the evaporation device 10 may also be manufactured by casting or other methods.

[0089] In one embodiment, please refer to Figure 2 , Figure 3 , Figure 6 and Figure 7 The first heating device 20 includes a first heat transfer element 21 and a first heating component 22. The first heat transfer element 21 is in contact with the first housing 11, and the first heating component 22 is in contact with the first heat transfer element 21. That is, the first heating component 22 is in direct contact with the first heat transfer element 21 to transfer the generated heat to the first heat transfer element 21. The first heat transfer element 21 then transfers the heat to the evaporation device 10. The first heat transfer element 21 can expand the heat transfer area and improve the heat transfer efficiency.

[0090] The structure of the first heat transfer element 21 is not limited. For example, the first heat transfer element 21 can be a heat transfer plate, a heat transfer mesh, a heat transfer support, etc. The first heat transfer element 21 can be made of a material with good heat transfer properties, such as aluminum or aluminum alloy.

[0091] The type of the first heating component 22 is not limited, as long as it can transfer heat to the first heat transfer element 21 through contact. For example, the first heating component 22 can be a heating tube, a PTC heating element, or a film heater.

[0092] The contact between the first heating component 22 and the first heat transfer element 21 can be a surface contact; for example, the contact surfaces of the first heating component 22 and the first heat transfer element 21 can both be planar (see [link]). Figure 7 Alternatively, one of the contact surfaces of the first heating component 22 and the first heat transfer component 21 may be an outwardly convex curved surface, while the other may be an inwardly concave curved surface. Surface contact is beneficial for the first heat transfer component 21 to be heated more evenly, thereby improving the heat transfer effect.

[0093] In some embodiments, the contact between the first heating component 22 and the first heat transfer component 21 can also be a line contact. For example, the contact surfaces of the first heating component 22 and the evaporation device 10 can both be outwardly convex curved surfaces, or one of the contact surfaces of the first heating component 22 and the evaporation device 10 can be curved surfaces, while the other contact surface can be a plane.

[0094] Similarly, the contact between the evaporator 10 and the first heat transfer element 21 can be either surface contact or line contact.

[0095] When the first heating component 22 is a heating element, the housing of the heating element can be a single-layer housing or a double-layer housing with an outer shell and an inner shell fitted inside the outer shell. The material of the single-layer housing can be aluminum, aluminum alloy, stainless steel, etc., and the material of the outer shell of the double-layer housing can be aluminum, aluminum alloy, etc., and the material of the inner shell can be stainless steel.

[0096] In some embodiments, the first heat transfer element 21 may be in contact with the second housing 12.

[0097] It should be noted that in some embodiments, the first heat transfer element 21 may not be provided, that is, the first heating component 22 may directly contact one of the first housing 11 and the second housing 12.

[0098] In one embodiment, please refer to Figure 11 The first housing 11 has a receiving groove 11a, and the first heat transfer element 21 is covered on the outer end face and outer side wall of the first housing 11. That is, the periphery of the first heat transfer element 21 can be provided with a rim 21a so that the first heat transfer element 21 can contact the outer end face and outer side wall of the first housing 11, thereby further improving the heat transfer efficiency.

[0099] In some embodiments, the second housing 12 may have a receiving groove 11a, and the first heat transfer element 21 may be covered on the outer end face and outer side wall of the second housing 12.

[0100] In one embodiment, the first housing 11 has a stainless steel layer and an aluminum layer. The aluminum layer is located on the side of the stainless steel layer away from the enclosed space, and the first heating device 20 is in contact with the aluminum layer. That is, the first housing 11 can be made of a steel-aluminum composite material. The stainless steel layer is located on the side of the first housing 11 closest to the enclosed space, meaning it is in direct contact with the water flow and steam in the water channel 10a. The aluminum layer is located on the side of the first housing 11 away from the enclosed space, and it is used to contact the first heating device 20. Compared to stainless steel, aluminum has better heat transfer properties. However, compared to aluminum, the metallic elements in stainless steel are less likely to penetrate into the water flow and steam in the water channel 10a. Therefore, compared to a first housing 11 made of stainless steel, using a steel-aluminum composite material for the first housing 11 can reduce the penetration of metallic elements into the water flow and steam in the water channel 10a and improve heat transfer efficiency.

[0101] In some embodiments, the second housing 12 may have a stainless steel material layer and an aluminum material layer, with the aluminum material layer located on the side of the stainless steel material layer away from the enclosed space, and the first heating device 20 in contact with the aluminum material layer. Alternatively, both the first housing 11 and the second housing 12 may have a stainless steel material layer and an aluminum material layer, with the first heating device 20 simultaneously in contact with the aluminum material layer of the first housing 11 and the aluminum material layer of the second housing 12.

[0102] Furthermore, when the first housing 11 has a stainless steel layer and an aluminum layer, and the first heating device 20 is in contact with the aluminum layer of the first housing 11, the material of the second housing 12 is not limited. For example, the material of the second housing 12 can be aluminum, aluminum alloy, stainless steel, steel-aluminum composite material, etc. Similarly, when the second housing 12 has a stainless steel layer and an aluminum layer, and the first heating device 20 is in contact with the aluminum layer of the second housing 12, the material of the first housing 11 can also be aluminum, aluminum alloy, stainless steel, steel-aluminum composite material, etc.

[0103] In one embodiment, please refer to Figure 15 and Figure 16 The steam generator also includes a second heating device 30. The first heating device 20 is in contact with the first housing 11, and the second heating device 30 is in contact with the second housing 12. That is, in addition to the first heating device 20, there can also be a second heating device 30. The second heating device 30 can also transfer heat to the evaporation device 10 by contacting the second housing 12. Thus, by cooperating with the first heating device 20 and the second heating device 30, the heat transfer efficiency can be further improved.

[0104] It should be noted that, Figure 15 and Figure 16The second heating device 30 shown includes a second heat transfer element 31 and a second heating component 32. The second heat transfer element 31 is in contact with the second housing 12, and the second heating component 32 is in contact with the second heat transfer element 31. That is, the heat generated by the second heating component 32 is transferred to the evaporation device 10 through the second heat transfer element 31. In some embodiments, the second heating device 30 may not have a second heat transfer element 31, that is, the second heating component 32 can directly contact the second housing 12.

[0105] In addition, similar to the first heat transfer element 21, the second heat transfer element 31 can also be a heat transfer plate, heat transfer mesh, heat transfer support, etc. The second heat transfer element 31 can be made of a material with good heat transfer properties, such as aluminum or aluminum alloy. Similarly, similar to the first heating component 22, the second heating component 32 can also be a heating element, a PTC heating element, or a film heater.

[0106] In one embodiment, please refer to Figure 2 , Figure 3 , Figure 6 and Figure 7 The steam generator also includes a temperature controller 40, which is mounted on the first housing 11.

[0107] Specifically, the thermostat 40 is mainly used to control the heating temperature. The type of thermostat 40 is not limited. For example, the thermostat 40 can be an electronic thermostat, such as an NTC (Negative Temperature Coefficient) thermistor electronic thermostat, or a mechanical thermostat, such as a snap-action mechanical thermostat. The thermostat 40 is mounted on the first housing 11 for easy installation.

[0108] In some embodiments, the thermostat 40 may also be disposed on the second housing 12, or a mounting bracket may be disposed on the steam generator, and the thermostat 40 may be fixed on the mounting bracket.

[0109] Additionally, please see Figures 14 to 16 A temperature limiter 50 can also be installed on the steam generator. The temperature limiter 50 can be installed on the first housing 11 or the second housing 12, or on other mounting brackets. The type of temperature limiter 50 is not limited. For example, the temperature limiter 50 can be a resettable snap-action temperature limiter 50, a manually reset temperature limiter 50, a thermal fuse, etc. The temperature limiter 50 can play a safety protection role to improve the safety of the steam generator.

[0110] In one embodiment, the steam generator may also be provided with a mounting box, in which both the evaporation device 10 and the first heating device 20 are mounted.

[0111] The mounting box can be made of high-temperature resistant material. The mounting box can be used to protect the contact surface between the evaporator 10 and the first heating element 22, block heat dissipation, reflect heat, and can also be used for installation on electrical equipment.

[0112] In one embodiment, please refer to Figure 7 , Figure 13 , Figure 15 and Figure 16 The outline of the cross section of waterway 10a is at least partially a straight segment 10d.

[0113] Specifically, the cross-section of waterway 10a mentioned here mainly refers to Figure 7 , Figure 13 , Figure 15 and Figure 16 The cross-sections of the waterways shown, excluding the first and last waterways 10a in the direction of water flow, can be ignored. Figure 7 , Figure 13 , Figure 15 and Figure 16 The cross-sections of the first and last waterways 10a along the direction of water flow.

[0114] The outline of the cross section of waterway 10a is at least partially a straight segment 10d means that at least part of the sidewall of waterway 10a is a plane extending along the direction of water flow.

[0115] The cross-sectional shape of the waterway 10a, whose outline is at least partially a straight segment 10d, can have various forms. Taking the evaporator 10 with baffles 13 sandwiched between the first housing 11 and the second housing 12 as an example, please refer to [reference needed]. Figure 13 The cross-section of waterway 10a can be triangular, meaning that the outline of the cross-section of waterway 10a can be formed by connecting three straight line segments 10d.

[0116] For example, please refer to Figure 15 The cross-section of waterway 10a can be rectangular, meaning that the outline of the cross-section of waterway 10a can be formed by connecting four straight line segments 10d.

[0117] For example, please refer to Figure 16 The outline of the cross-section of waterway 10a may also include a curved segment 10e and a straight segment 10d, with the curved segment 10e and the straight segment 10d connected end-to-end, for example, Figure 16 The curved segment 10e and the straight segment 10d can roughly form a "U" shape with the opening closed. In some embodiments, the shape formed by the curved segment 10e and the straight segment 10d can also be other relatively regular shapes, such as a semicircle, or other irregular shapes.

[0118] The fact that the outline of the cross section of the waterway 10a is at least partially a straight segment 10d can simplify the production process and facilitate manufacturing.

[0119] Please see Figure 13 , Figure 15 and Figure 16 Under the premise that the enclosed spaces are of the same size and the cross-sectional area of ​​waterway 10a is the same, and Figure 13 The waterway 10a shown has a triangular cross-sectional shape and Figure 16 Compared to the U-shaped waterway 10a shown with its opening closed, the cross-sectional shape shown is different. Figure 15 The rectangular cross-sectional waterway 10a shown can be arranged more closely, and the waterway 10a is also the longest, followed by... Figure 13 The waterway 10a shown has a triangular cross-sectional shape.

[0120] It is understandable that the shape of the cross-section of the waterway 10a, whose outline has at least a portion of a straight line segment 10d, is not limited to the above types. For example, the shape of the cross-section of the waterway 10a can also be trapezoidal, as long as the outline of the cross-section of the waterway 10a has at least a portion of a straight line segment 10d.

[0121] In some embodiments, the outline of the cross-section of the waterway 10a may also be composed of only curves. For example, the shape of the cross-section of the waterway 10a may also be circular, elliptical, etc.

[0122] The various embodiments / implementations provided in this application can be combined with each other without creating contradictions.

[0123] The above description is merely a preferred embodiment of this application and is not intended to limit the application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application are included within the scope of protection of this application.

Claims

1. A steam generator, characterized in that, include: An evaporation device includes a first housing, a second housing, and baffles. The first housing and the second housing are fastened together to define a closed space having an inlet and an outlet. The inlet is located near a first end of the evaporation device along a first direction. The centerline of the outlet extending along a second direction is located on the side of the centerline of the inlet extending along the second direction away from the first end, wherein the second direction is perpendicular to the first direction. The baffles divide the closed space into a plurality of water channels spaced apart along the second direction and sequentially connected along the direction of water flow. The first water channel along the direction of water flow is connected to the inlet, and the last water channel along the direction of water flow is connected to the outlet. Wherein, if the number of water channels is even, the outlet is located at the beginning of the last water channel, or the outlet is near the beginning or end of the last water channel; if the number of water channels is odd, the outlet is near the beginning or end of the last water channel. A first heating device is disposed outside the evaporator, and the first heating device transfers heat to the evaporator through contact.

2. The steam generator according to claim 1, characterized in that, A portion of the first housing protrudes to form the baffle rib, which is in sealing contact with, welded to, or bonded to the second housing. And / or, A portion of the second housing protrudes to form the baffle, which is in sealing contact with, welded to, or bonded to the first housing.

3. The steam generator according to claim 1 or 2, characterized in that, The baffle is sandwiched between the first housing and the second housing. The baffle is welded or bonded to one of the first housing and the second housing, and is in sealing contact, welded or bonded to the other of the first housing and the second housing.

4. The steam generator according to claim 1 or 2, characterized in that, The first heating device includes a first heat transfer element and a first heating assembly. The first heat transfer element is in contact with one of the first housing and the second housing, and the first heating assembly is in contact with the first heat transfer element.

5. The steam generator according to claim 4, characterized in that, The first housing has a receiving groove, one side of which is open. The second housing covers the open portion of the receiving groove, so that the receiving groove forms the enclosed space. The first heat transfer element covers the outer end face and outer side wall of the first housing; or, The second housing has a receiving groove, one side of which is open. The first housing covers the open part of the receiving groove so that the receiving groove forms the closed space. The first heat transfer element covers the outer end face and outer side wall of the second housing.

6. The steam generator according to claim 1 or 2, characterized in that, The first heating device is in contact with one of the first housing and the second housing; The steam generator further includes a second heating device, which comprises a second heating assembly that contacts another of the first housing and the second housing; or, The second heating device includes a second heat transfer element and a second heating assembly. The second heat transfer element is in contact with the other of the first housing and the second housing, and the second heating assembly is in contact with the second heat transfer element.

7. The steam generator according to claim 1 or 2, characterized in that, The first housing has a stainless steel layer and an aluminum layer, the aluminum layer being located on the side of the stainless steel layer facing away from the enclosed space, and the first heating device being in contact with the aluminum layer; or, The second housing has a stainless steel layer and an aluminum layer, with the aluminum layer located on the side of the stainless steel layer away from the enclosed space, and the first heating device in contact with the aluminum layer.

8. The steam generator according to claim 1 or 2, characterized in that, The evaporation device is made of any one of aluminum, aluminum alloy, and stainless steel; and / or, The evaporation device has a food-grade protective layer that covers the inner wall of the waterway; and / or, The first heating device includes a heating element, the housing of which is made of any one of aluminum, aluminum alloy and stainless steel; or, the housing of the heating element includes an outer shell and an inner shell fitted inside the outer shell, the outer shell being made of aluminum or aluminum alloy and the inner shell being made of stainless steel.

9. The steam generator according to claim 1 or 2, characterized in that, The cross-sectional area of ​​the waterway is greater than or equal to 18 square millimeters.

10. The steam generator according to claim 1 or 2, characterized in that, The outline of the cross-section of the waterway has at least a portion that is a straight line segment.

11. The steam generator according to claim 10, characterized in that, The cross-sectional shape of the waterway is rectangular, trapezoidal, or triangular; or, The outline of the cross-section of the waterway includes curved segments and straight segments, with the curved segments and straight segments connected end to end.

12. A steam generator, characterized in that, include: An evaporation device includes a first shell, a second shell, and baffles. At least one of the first shell and the second shell has a stainless steel layer and an aluminum layer. The first shell and the second shell are fastened together to define a closed space having an inlet and an outlet. The aluminum layer is located on the side of the stainless steel layer facing away from the closed space. The inlet is near a first end of the evaporation device along a first direction. The centerline of the outlet extending along a second direction is located on the side of the centerline of the inlet extending along the second direction facing away from the first end, wherein the second direction is perpendicular to the first direction. The baffles divide the closed space into a plurality of water channels spaced apart along the second direction and sequentially connected along the direction of water flow. The first water channel along the direction of water flow is connected to the inlet, and the last water channel along the direction of water flow is connected to the outlet. Wherein, if the number of water channels is even, the outlet is located at the beginning of the last water channel, or the outlet is near the beginning or end of the last water channel; if the number of water channels is odd, the outlet is near the beginning or end of the last water channel. A first heating device is disposed outside the evaporation device, and the first heating device transfers heat to the aluminum material layer through contact.

13. An electrical appliance, characterized in that, Includes the steam generator according to any one of claims 1-12.

14. The electrical equipment according to claim 13, characterized in that, The electrical equipment is any one of the following: garment steamer, electric iron, steam mop, steam wallpapering machine, coffee machine, milk maker, instant water kettle, water dispenser, steam pressure cooker, steam rice cooker, electric steamer, steam oven, steam blender, electric steamer, steam air fryer, dishwasher, and washing machine.

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