Electric steamer

Abstract

The utility model discloses an electric steamer which comprises a base, a water tank and a steamer assembly with a steaming cavity, the base comprises a shell, a steam generator and a steam secondary heater, and the steam generator comprises a steam generating cavity and a first heating piece for heating the steam generating cavity. The steam generating cavity is provided with a water inlet communicated with the water tank and a steam outlet communicated with the steam secondary heater, the steam secondary heater is provided with a steam exhaust port for conveying high-temperature steam to the steam cavity, and the steam generator comprises a base installed on the shell and a cover plate covering the base in a sealed mode. The cover plate is located on the outer side of the shell and detachably connected with the base body, and the cover plate and the base body are matched to form the steam generating cavity. According to the electric steamer, the steam generator can be detached to clean the steam generating cavity, so that scale impurities in the steam generating cavity are removed, the steam secondary heater is prevented from being blocked, and health and sanitation of water are guaranteed.

Description

TECHNICAL FIELD

[0001] The utility model relates to kitchen appliance technical field especially relates to a electric steamer. BACKGROUND

[0002] The electric steamer in prior art includes base, water tank and steamer basket assembly with steam cavity, the base includes shell body and steam generator and steam secondary heater installed in the shell body, the steam generator includes steam generation cavity and first heating part heating steam generation cavity, steam generation cavity has water inlet communicating with water tank and steam outlet communicating with steam secondary heater, steam secondary heater has steam outlet port delivering high temperature steam to steam cavity. When the electric steamer is used, the water in the water tank enters steam generation cavity through the water inlet, the first heating part heats the water in steam generation cavity to form water vapor, the water vapor enters steam secondary heater through steam outlet, steam secondary heater heats the steam entering to form high temperature steam, and the high temperature steam enters steam cavity through steam outlet port to heat the food in steam cavity, so as to shorten the cooking time.

[0003] Because the cavity wall of the existing steam generation cavity is an integral structure processed by die casting or brazing, it cannot be disassembled, and in the process of heating water to steam by the steam generator, water scale and impurities will remain in the steam generation cavity, so that after long time use, water scale and impurities will accumulate, thereby affecting the heating efficiency, and if the steam delivery pipeline of the steam secondary heater is blocked, the steam cannot be discharged in time, which will also have the risk of explosion. Finally, too much impurities accumulation will also affect the health and hygiene of water quality. CONTENT OF THE UTILITY MODEL

[0004] The utility model solves the technical problem in the prior art and provides an electric steamer, which can disassemble the steam generator to clean the steam generation cavity to remove water scale and impurities in the steam generation cavity, prevent the steam secondary heater from being blocked, and ensure the health and hygiene of water quality.

[0005] To solve the above technical problems, the utility model adopts the following technical scheme:

[0006] An electric steamer includes a base, a water tank, and a steamer basket assembly with a steam cavity. The base includes a shell body, a steam generator, and a steam secondary heater. The steam generator includes a steam generation cavity and a first heating part that heats the steam generation cavity. The steam generation cavity has a water inlet that communicates with the water tank and a steam outlet that communicates with the steam secondary heater. The steam secondary heater has a steam outlet port that delivers high temperature steam to the steam cavity. The steam generator includes a seat body that is installed on the shell body and a cover plate that seals the seat body. The cover plate is located on the outside of the shell body and is detachably connected to the seat body. The cover plate and the seat body cooperate to form the steam generation cavity.

[0007] In the electric steamer, the top of the shell is provided with a concave cavity formed by being concave, the seat body is fixed on the bottom wall of the concave cavity, the cover plate is exposed in the concave cavity, and the steamer basket assembly is arranged on the top of the shell to shield the concave cavity and the cover plate.

[0008] In the electric steamer, the cover plate is provided with a pressure relief valve, when the pressure in the steam generating cavity exceeds the preset pressure, the pressure relief valve connects the steam generating cavity and the steam cavity, so that the steam in the steam generating cavity is discharged to the steam cavity through the pressure relief valve.

[0009] In the electric steamer, the pressure relief valve comprises a pressure relief channel and a valve core vertically floating in the pressure relief channel, the pressure relief channel has a steam inlet connected with the steam generating cavity and a steam outlet connected with the steam cavity, when the pressure in the steam generating cavity is lower than the preset pressure, the valve core closes the steam inlet, and when the pressure in the steam generating cavity exceeds the preset pressure, the valve core opens the steam inlet to connect the steam inlet and the steam outlet.

[0010] In the electric steamer, the pressure relief channel comprises a large-diameter section connected with the steam outlet and a variable-diameter section arranged between the large-diameter section and the steam inlet, the variable-diameter section gradually shrinks towards the steam inlet, the valve core is a spherical body, the valve core closes the steam inlet when matched with the variable-diameter section, and the valve core opens the steam inlet and forms a gap between the large-diameter section when matched with the large-diameter section, and the gap connects the steam inlet and the steam outlet.

[0011] In the electric steamer, the cover plate is connected with the seat body through clamping, threaded connection or screws.

[0012] In the electric steamer, the steam generator further comprises a sealing ring, the cover plate comprises a cover plate side wall on the inner side of the seat body, the cover plate side wall is provided with a mounting ring extending outward, and the sealing ring is sleeved on the mounting ring and sealingly abuts against the side wall of the seat body.

[0013] In the electric steamer, the steam secondary heater comprises a steam conveying pipeline and a second heating element, one end of the steam conveying pipeline is connected with the steam outlet, the other end is provided with the steam discharge port, and the second heating element is used for heating the steam in the steam conveying pipeline.

[0014] In the electric steamer, the shell has a cavity, the first heating element and the steam secondary heater are located in the cavity, and the base further comprises a water pump arranged in the cavity to connect the water inlet and the water tank.

[0015] In the electric steamer, the base is further provided with a control device, and the control device is used for adjusting the working state of the steam secondary heater.

[0016] The beneficial effects of the electric steamer are as follows:

[0017] 1. The base and cover plate in this utility model are detachably connected. Since the cover plate is located on the outside of the shell, when the user needs to clean the steam generating chamber, he / she only needs to remove the cover plate from the outside of the shell to open the steam generating chamber. There is no need to disassemble the shell and then remove the cover plate, which reduces the cleaning difficulty for the user. Then, the inside of the steam generating chamber can be cleaned to remove the scale and impurities in the steam generating chamber, preventing scale and impurities from entering the secondary steam heater and causing blockage. At the same time, it also ensures the health and hygiene of the water quality and prevents scale and impurities from entering the steaming chamber and coming into contact with the food.

[0018] 2. The top of the housing has a recessed cavity, the base is fixed to the bottom wall of the cavity, and the cover is exposed inside the cavity. The steamer assembly is placed on top of the housing to cover the cavity and the cover. This design allows the cavity to provide space for the cover, making the base structure more compact. In addition, by placing the steamer assembly on top of the housing to cover the cavity and the cover, the cover is prevented from being seen by the user when the electric steamer is in use, thereby further improving the appearance of the electric steamer.

[0019] 3. The cover plate is equipped with a pressure relief valve. When the pressure inside the steam generating chamber exceeds the preset pressure, the pressure relief valve connects the steam generating chamber and the steaming chamber, allowing the steam in the steam generating chamber to be discharged into the steaming chamber. This design avoids the risk of machine explosion due to excessive pressure inside the steam generating chamber, thereby improving user safety. In addition, the steam discharged from the steam generating chamber flows into the steaming chamber, allowing the steam to heat the food, thus enabling the reuse of steam and further shortening the cooking time.

[0020] 4. The pressure relief valve includes a pressure relief channel and a valve core vertically floating within the pressure relief channel. The pressure relief channel has a steam inlet communicating with the steam generating chamber and a steam outlet communicating with the steam generating chamber. When the pressure in the steam generating chamber is lower than the preset pressure, the valve core closes the steam inlet. When the pressure in the steam generating chamber exceeds the preset pressure, the valve core opens the steam inlet to connect the steam inlet and the steam outlet. With this design, when the pressure in the steam generating chamber is lower than the preset pressure, the weight of the valve core, being greater than the preset pressure, causes the valve core to move downwards and close the steam inlet, ensuring that steam from the steam generating chamber enters the secondary steam heater through the steam outlet, thus heating the food with high-temperature steam. Conversely, when the pressure in the steam generating chamber exceeds the preset pressure, the pressure overcomes the weight of the valve core, causing it to move upwards and open the steam inlet. Therefore, this technical solution controls the opening and closing of the pressure relief valve using pressure changes within the steam generating chamber, eliminating the need for circuit control and reducing product manufacturing costs.

[0021] 5. The pressure relief channel includes a large-diameter section connected to the steam outlet and a reducing section located between the large-diameter section and the steam inlet. The reducing section gradually narrows towards the steam inlet. The valve core is a spherical shape. When the valve core mates with the reducing section, it closes the steam inlet. When the valve core mates with the large-diameter section, it opens the steam inlet and forms a gap between the valve core and the large-diameter section, connecting the steam inlet and the steam outlet. This design allows the valve core to be concealed within the pressure relief channel, improving the appearance of the cover plate. Furthermore, by designing the reducing section to mate with the valve core, the sealing reliability of the valve core at the steam inlet is improved, preventing steam leakage to the outside of the steam generation chamber.

[0022] 6. The cover plate is snapped onto the base; or the cover plate is threaded onto the base; or the cover plate is connected to the base with screws. This design not only simplifies the structure of the cover plate and the base, but also makes it easier for users to disassemble and assemble the cover plate, thus facilitating user operation.

[0023] 7. The steam generator also includes a sealing ring. The cover plate includes a side wall located inside the housing. An outwardly extending mounting ring is provided on the side wall of the cover plate. The sealing ring is fitted onto the mounting ring and seals against the side wall of the housing. This design facilitates the removal and cleaning of the sealing ring, and also ensures a tight seal between the cover plate and the housing to prevent steam leakage.

[0024] 8. The housing has a cavity, within which the first heating element and the secondary steam heater are located. The base also includes a water pump located within the cavity to connect the water inlet to the water tank. This design allows the first heating element, steam outlet, secondary steam heater, and water pump to be concealed within the housing, improving the appearance of the base.

[0025] 9. The base is also equipped with a control device to adjust the working status of the secondary steam heater. This design allows the secondary steam heater to be turned off when high-temperature steam is not needed to heat the food, thus preventing the heating of steam. In this case, easily cooked ingredients can be cooked, ensuring their texture.

[0026] These features and advantages of the present invention will be disclosed in detail in the following specific embodiments and accompanying drawings. [Attached Image Description]

[0027] The present invention will be further described below with reference to the accompanying drawings:

[0028] Figure 1 This is an explosion diagram of the electric steamer in Embodiment 1 of this utility model;

[0029] Figure 2 This is an exploded view of the base in Embodiment 1 of this utility model;

[0030] Figure 3 This is a cross-sectional view of the base portion structure in Embodiment 1 of this utility model;

[0031] Figure 4 This is a schematic diagram of the base structure in Embodiment 1 of this utility model;

[0032] Figure 5 This is a cross-sectional view of the base of the electric steamer in use in Embodiment 1 of this utility model;

[0033] Figure 6 This is a schematic diagram of the structure of the valve core when the steam inlet is opened in Embodiment 1 of this utility model.

[0034] Figure label:

[0035] 001, Gap; 100, Base; 110, Housing; 111, Cavity; 112, Bottom Cover; 113, Top Cover Assembly; 114, Cavity; 120, Steam Generator; 121, Steam Generating Chamber; 1210, Water Inlet; 1211, Steam Outlet; 122, First Heating Element; 123, Seat; 1231, Rotary Slot; 124, Cover Plate; 1240, Through Hole; 1241, Cover Plate Side Wall; 1242, Rotary Protrusion ; 1243, Mounting ring; 125, Sealing ring; 130, Secondary steam heater; 131, Exhaust port; 132, Steam delivery pipe; 133, Secondary heating element; 140, Water pump; 150, Pressure relief valve; 151, Valve seat; 1510, Pressure relief channel; 1511, Steam inlet; 1512, Steam outlet; 1513, Large diameter section; 1514, Variable diameter section; 152, Valve core; 200, Water tank; 300, Steamer assembly.

Detailed Implementation Methods

[0036] This utility model provides an electric steamer, including a base, a water tank, and a steaming basket assembly with a steaming chamber. The base includes a shell, a steam generator, and a secondary steam heater. The steam generator includes a steam generating chamber and a first heating element for heating the steam generating chamber. The steam generating chamber has a water inlet communicating with the water tank and a steam outlet communicating with the secondary steam heater. The secondary steam heater has an exhaust port for supplying high-temperature steam to the steaming chamber. The steam generator includes a base mounted on the shell and a cover plate sealingly covering the base. The cover plate is located outside the shell and is detachably connected to the base plate. The cover plate and the base plate cooperate to form the steam generating chamber.

[0037] In this invention, the base and cover are detachably connected. Since the cover is located on the outside of the housing, when the user needs to clean the steam generating chamber, they only need to remove the cover from the outside of the housing to open the steam generating chamber, without having to disassemble the housing and then remove the cover. This reduces the cleaning difficulty for the user. Subsequently, the inside of the steam generating chamber can be cleaned to remove scale and impurities, preventing scale and impurities from entering the secondary steam heater and causing blockage. It also ensures the health and hygiene of the water quality and prevents scale and impurities from entering the steaming chamber and coming into contact with the food.

[0038] The technical solutions of the embodiments of this utility model will be explained and described below with reference to the accompanying drawings. However, the following embodiments are only preferred embodiments of this utility model and not all of them. Based on the embodiments in the implementation, other embodiments obtained by those skilled in the art without creative effort are all within the protection scope of this utility model. In addition, it should be understood that the terms "upper," "lower," "left," "right," "longitudinal," "lateral," "inner," "outer," "vertical," "horizontal," "top," and "bottom," etc., indicating orientation or positional relationship, are only based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description. They are not intended to indicate or imply that the device / component 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 utility model.

[0039] Example 1

[0040] like Figures 1 to 6 As shown, the electric steamer in this embodiment includes a base 100, a water tank 200, and a steamer assembly 300. The steamer assembly 300 includes multiple steaming chambers. The base 100 includes a housing 110, a steam generator 120, and a secondary steam heater 130. The steam generator 120 includes a steam generating chamber 121 and a first heating element 122 for heating the steam generating chamber 121. The steam generating chamber 121 has a water inlet 1210 communicating with the water tank 200 and a steam outlet 1211 communicating with the secondary steam heater 130. The secondary steam heater 130 is provided with a steam outlet 131 for supplying high-temperature steam to the steaming chamber. The steam generator 120 includes a seat 123 mounted on the housing 110 and a cover plate 124 sealingly covering the seat 123. The cover plate 124 is located outside the housing 110 and is detachably connected to the seat 123. The outside of the housing refers to the side located on the outer surface of the housing. The cover plate 124 and the seat 123 cooperate to form the steam generating chamber 121.

[0041] In this embodiment, the base 123 and the cover plate 124 are detachably connected. Since the cover plate 124 is located outside the housing 110, when the user needs to clean the steam generating chamber 121, he / she only needs to remove the cover plate 124 from the outside of the housing 110 to open the steam generating chamber 121. There is no need to disassemble the housing 110 and then remove the cover plate 124, which reduces the cleaning difficulty for the user. Then, the inside of the steam generating chamber 121 is cleaned to remove the scale and impurities inside the steam generating chamber 121, preventing scale and impurities from entering the secondary steam heater 130 and causing it to become blocked. At the same time, it also ensures the health and hygiene of the water quality and prevents scale and impurities from entering the steaming chamber and coming into contact with the food.

[0042] Specifically, in this embodiment, the multiple steaming chambers of the steamer assembly 300 are vertically stacked, with two adjacent steaming chambers connected and the exhaust port 131 connected to the bottommost steaming chamber. Alternatively, each of the multiple steaming chambers can be connected to the exhaust port 131 through an independent channel to prevent cross-contamination of odors. In order to simplify the structure of the steamer assembly 300, in this embodiment, it is preferable that two adjacent steaming chambers are connected and the exhaust port 131 is connected to the bottommost steaming chamber.

[0043] In this embodiment, the top of the housing 110 has a recessed cavity 111. The top of the cavity 111 is open. The base 123 is fixed to the bottom wall of the cavity 111 by welding, integral machining, or screw connection. The inner bottom surface of the bottom wall of the cavity 111 forms the outer side surface of the housing. The cover plate 124 is exposed inside the cavity 111. The steamer assembly 300 is placed on top of the housing 110 to cover the cavity 111 and the cover plate 124, so that the cavity 111 communicates with the lowermost steaming chamber. This design allows the cavity 111 to provide a receiving space for the cover plate 124, making the base 100 structure more compact. In addition, by placing the steamer assembly 300 on top of the housing 110 to cover the cavity 111 and the cover plate 124, the cover plate 124 can be prevented from being seen by the user when the electric steamer is in use, thereby further improving the appearance of the electric steamer.

[0044] In this embodiment, the housing 110 includes a bottom cover 112 and an upper cover assembly 113. The upper cover assembly 113 covers the bottom cover 112 and cooperates with the bottom cover 112 to define a cavity 114. The first heating element 122 and the steam secondary heater 130 are both located in the cavity 114. The steam secondary heater 130 includes a steam delivery pipe 132 and a second heating element 133. The bottom wall of the seat 123 is recessed relative to the bottom wall of the recess 111, so that part of the bottom wall of the seat 123 is located below the bottom wall of the recess 111. The steam outlet 1211 is located on the seat 123. Located on a portion of the side wall below the bottom wall of the recess 111, a steam delivery pipe 132 has one end connected to a steam outlet 1211, and the other end extending through the bottom wall of the recess 111 and into the recess 111. The other end of the steam delivery pipe 132 extending into the recess 111 has the aforementioned exhaust port 131. A second heating element 133 heats the steam in the steam delivery pipe 132 to form high-temperature steam. This allows the exhaust port 131 to connect with the lowest steam chamber through the recess 111, enabling the steam discharged from the exhaust port 131 to enter each steam chamber. The base 100 also includes a water pump 140 located within the cavity 114 to connect the water inlet 1210 and the water tank 200. The water pump 140 pumps water from the water tank 200 into the steam generating chamber 121. This design allows the first heating element 122, the secondary steam heater 130, and the water pump 140 to be concealed within the housing 110, improving the appearance of the base 100.

[0045] Preferably, to achieve a detachable connection between the cover plate 124 and the seat 123, the cover plate 124 and the seat 123 are snap-fitted in this embodiment. Specifically, the side wall of the seat 123 is provided with a screw-lock groove 1231, and the cover plate 124 has a downwardly extending cover plate side wall 1241. The cover plate side wall 1241 is provided with a screw-lock protrusion 1242. By rotating the cover plate 124, the screw-lock protrusion 1242 is screwed into the screw-lock groove 1231, thereby achieving the snap-fit ​​connection between the cover plate 124 and the seat 123. This design not only simplifies the structure of the cover plate 124 and the seat 123, but also facilitates the user's disassembly and assembly of the cover plate 124, thus simplifying user operation.

[0046] It is understood that in other embodiments of this utility model, the screw groove may also be provided on the side wall of the cover plate, and the screw protrusion may be provided on the side wall of the seat; or, the cover plate and the seat may be threaded together; or the cover plate and the seat may be connected by screws.

[0047] Furthermore, the cover plate 124 in this embodiment is also equipped with a pressure relief valve 150. When the pressure in the steam generating chamber 121 exceeds the preset pressure, the pressure relief valve 150 connects the steam generating chamber 121 with the concave cavity 111. Since the concave cavity 111 is connected to the lowest steaming cavity, the pressure relief valve 150 can connect the steam generating chamber 121 with the steaming cavity, so that the steam in the steam generating chamber 121 can be discharged into the steaming cavity through the pressure relief valve 150. This design can avoid the risk of machine explosion due to excessive pressure in the steam generating chamber 121, thereby improving user safety. In addition, the steam discharged from the steam generating chamber 121 flows into the steaming cavity, which can also heat the food, so as to realize the reuse of steam, thereby further shortening the cooking time.

[0048] The pressure relief valve 150 in this embodiment includes a valve seat 151 and a valve core 152. The valve seat 151 has a vertically penetrating pressure relief channel 1510. The valve seat 151 is fixed to the inner side of the cover plate 124 by fasteners. The cover plate 124 has a through hole 1240. The upper end of the pressure relief channel 1510 corresponds to and communicates with the through hole 1240. The valve core 152 is vertically floating in the pressure relief channel 1510. The pressure relief channel 1510 has a steam inlet 1511 and a steam outlet 1512. The steam inlet 1511 is located below the steam outlet 1512 and communicates with the steam generating chamber 121. The steam outlet 1512 communicates with the steam chamber through the through hole 1240 and the cavity 111. When the pressure in the steam generating chamber 121 is lower than the preset pressure, wherein the preset pressure is related to the valve core 152, the pressure relief valve 151 is fixed to the inner side of the cover plate 1244 by fasteners. Since the weight of 52 is equal, the weight of valve core 152 is greater than the preset pressure, causing valve core 152 to move downward and close steam inlet 1511, thereby disconnecting the connection between steam generating chamber 121 and concave cavity 111. This allows steam in steam generating chamber 121 to enter the steam delivery pipe 132 of steam secondary heater 130 through steam outlet 1211, thus heating food with high-temperature steam. When the pressure in steam generating chamber 121 exceeds the preset pressure, the pressure in steam generating chamber 121 overcomes the weight of valve core 152, causing valve core 152 to move upward and open steam inlet 1511, connecting steam inlet 1511 with steam outlet 1512. This allows steam in steam generating chamber 121 to be discharged and flow into concave cavity 111, and then enter the steaming chamber through concave cavity 111. Therefore, this technical solution can control the opening and closing of the pressure relief valve 150 by utilizing the pressure change in the steam generating chamber 121, without the need for circuit control, thereby reducing the manufacturing cost of the product; in addition, by using the cover plate 124 to limit the valve core 152, the valve cover can be omitted, thus simplifying the structure of the pressure relief valve 150.

[0049] Preferably, the pressure relief passage 1510 includes a large-diameter section 1513 and a variable-diameter section 1514. The large-diameter section 1513 is a cylindrical orifice of equal diameter, and its upper end is connected to the steam outlet 1512. The diameter of the steam outlet 1512 is not less than the diameter of the cylindrical orifice. The variable-diameter section 1514 is located between the large-diameter section 1513 and the steam inlet 1511, and the variable-diameter section 1514 gradually increases in diameter towards the steam inlet 1511. The valve core 152 is a sphere with a gradually contracting conical or arc-shaped surface. The minimum diameter of the variable diameter section 1514 is smaller than the radius of the valve core 152, and the maximum diameter of the variable diameter section 1514 is equal to the diameter of the large diameter section 1513. The diameter of the large diameter section 1513 is larger than the outer diameter of the valve core 152, and the diameter of the through hole 1240 is smaller than the outer diameter of the valve core 152 to prevent the valve core 152 from detaching from the pressure relief channel 1510 through the through hole 1240. During assembly, the valve core 152 is first placed in the pressure relief channel 1510 through the steam outlet 1512. Then, the valve seat 151 is fixed to the inside of the cover plate 124 with fasteners to limit the valve core 152 and prevent it from detaching upward from the pressure relief channel 1510.

[0050] When the pressure inside the steam generating chamber 121 is lower than the preset pressure (e.g.) Figure 5 As shown), the valve core 152, under the action of gravity, cooperates with the variable diameter section 1514 to close the steam inlet 1511. When the pressure in the steam generating chamber 121 exceeds the preset pressure (e.g., Figure 6 As shown, the valve core 152 moves upward to engage with the large-diameter section 1513, opening the steam inlet 1511. At this time, a gap 001 is formed between the valve core 152 and the large-diameter section 1513, which connects the steam inlet 1511 and the steam outlet 1512. This design allows the valve core 152 to be hidden within the pressure relief channel 1510, improving the appearance of the cover plate 124. Furthermore, by designing the variable-diameter section 1514 to engage with the valve core 152, the sealing reliability of the valve core 152 to the steam inlet 1511 can be improved, preventing steam leakage to the outside of the steam generating chamber 121.

[0051] It is understood that in other embodiments of this utility model, the valve core may also include a guide rod and a sealing plate installed on the top of the guide rod. The sealing plate is located in the pressure relief channel, which is a cylindrical blind hole of equal diameter. The upper end of the cylindrical blind hole is open to form a steam outlet corresponding to and communicating with the through hole. The bottom wall of the cylindrical blind hole is provided with a through hole for the guide rod to pass through, forming a steam inlet. The outer diameter of the sealing plate is larger than the diameter of the through hole but smaller than the diameter of the cylindrical hole. The outer diameter of the guide rod is smaller than the diameter of the through hole. When the pressure in the steam generating chamber is lower than the preset pressure, the valve core adheres to the bottom wall of the cylindrical hole under the action of gravity to close the steam inlet. When the pressure in the steam generating chamber exceeds the preset pressure, the valve core moves upward to open the steam inlet. At this time, a flow gap is formed between the sealing plate and the side wall of the cylindrical blind hole, and the flow gap connects the steam inlet and the steam outlet.

[0052] It is understood that in other embodiments of this utility model, the pressure relief valve also includes a valve cover, which is fitted onto the valve seat. The valve cover can be located inside the steam generating chamber or outside the cover plate. The valve cover is provided with a through hole corresponding to the steam outlet so that when the steam generating chamber is depressurized, the steam is discharged into the concave cavity through the pressure relief channel and the through hole.

[0053] Furthermore, the steam generator 120 in this embodiment also includes a sealing ring 125. A portion of the seat sidewall protrudes from the bottom wall of the recess 111. The cover plate sidewall 1241 is located inside the seat sidewall, and an outwardly extending mounting ring 1243 is provided on the cover plate sidewall 1241. The sealing ring 125 is fitted onto the mounting ring 1243 and seals against the sidewall of the seat. This design facilitates the removal and cleaning of the sealing ring 125, and also enables the sealing of the cover plate 124 with the seat 123 to prevent steam leakage.

[0054] It is understood that in other embodiments of this utility model, the sealing ring can also be fitted on the outside of the cover plate side wall, the sealing ring is located above the buckle protrusion, and the sealing ring is clamped between the cover plate side wall and the seat side wall to seal the gap between the cover plate side wall and the seat side wall.

[0055] Finally, in this embodiment, the base 100 is also equipped with a control device, which is used to adjust the working state of the secondary steam heater 130. With this design, when high-temperature steam is not needed to heat the food, the secondary steam heater 130 can be turned off by the control device to avoid heating the steam. At this time, easily cooked food can be cooked to ensure the taste of easily cooked food. Preferably, the cover plate 124 can also be removed to open the steam generating chamber 121, so that the steam in the steam generating chamber 121 can directly enter the concave cavity 111 and then enter the steaming chamber. This way, the steam does not need to enter the steam delivery pipe 132 of the secondary steam heater 130, thereby shortening the steam flow path.

[0056] It is understood that in other embodiments of this utility model, the cover plate may also be installed on the top of the housing outside the projection of the steamer assembly. The cover plate is provided with a steam conduit, which connects the steam chamber and the through hole so that when the steam generating chamber is depressurized, steam can enter the corresponding steam chamber through the steam conduit.

[0057] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Those skilled in the art should understand that this utility model includes, but is not limited to, the content described in the accompanying drawings and the specific embodiments above. Any modifications that do not depart from the functional and structural principles of this utility model will be included within the scope of the claims.

Claims

1. An electric steamer, comprising a base, a water tank, and a steaming basket assembly having a steaming chamber, wherein the base includes a shell, a steam generator, and a secondary steam heater, the steam generator including a steam generating chamber and a first heating element for heating the steam generating chamber, the steam generating chamber having a water inlet communicating with the water tank and a steam outlet communicating with the secondary steam heater, and the secondary steam heater having an exhaust port for supplying high-temperature steam to the steaming chamber, characterized in that, The steam generator includes a base mounted on a housing and a cover plate sealed and fitted onto the base. The cover plate is located outside the housing and is detachably connected to the base plate. The cover plate and the base plate cooperate to form the steam generating chamber.

2. An electric steamer as described in claim 1, characterized in that, The top of the housing has a recessed cavity, the seat is fixed to the bottom wall of the cavity, the cover is exposed in the cavity, and the steamer assembly is placed on the top of the housing to cover the cavity and the cover.

3. An electric steamer as described in claim 1, characterized in that, The cover plate is equipped with a pressure relief valve. When the pressure in the steam generating chamber exceeds the preset pressure, the pressure relief valve connects the steam generating chamber and the steaming chamber, so that the steam in the steam generating chamber is discharged into the steaming chamber through the pressure relief valve.

4. An electric steamer as described in claim 3, characterized in that, The pressure relief valve includes a pressure relief channel and a valve core that is vertically floating in the pressure relief channel. The pressure relief channel has a steam inlet communicating with the steam generating chamber and a steam outlet communicating with the steam generating chamber. When the pressure in the steam generating chamber is lower than the preset pressure, the valve core closes the steam inlet. When the pressure in the steam generating chamber exceeds the preset pressure, the valve core opens the steam inlet to communicate with the steam outlet.

5. An electric steamer as described in claim 4, characterized in that, The pressure relief channel includes a large-diameter section connected to the steam outlet and a variable-diameter section located between the large-diameter section and the steam inlet. The variable-diameter section gradually contracts towards the steam inlet. The valve core is a ball. When the valve core is engaged with the variable-diameter section, the steam inlet is closed. When the valve core is engaged with the large-diameter section, the steam inlet is opened and a gap is formed between the valve core and the large-diameter section. The gap connects the steam inlet and the steam outlet.

6. An electric steamer as described in claim 1, characterized in that, The cover plate is snapped into the base; or the cover plate is threaded into the base; or the cover plate is connected to the base by screws.

7. An electric steamer as described in claim 1, characterized in that, The steam generator also includes a sealing ring, and the cover plate includes a cover plate sidewall located inside the body. The cover plate sidewall is provided with an outwardly extending mounting ring, and the sealing ring is fitted onto the mounting ring and seals against the sidewall of the body.

8. An electric steamer as described in any one of claims 1 to 7, characterized in that, The secondary steam heater includes a steam delivery pipe and a second heating element. One end of the steam delivery pipe is connected to a steam outlet, and the other end is provided with the steam exhaust port. The second heating element is used to heat the steam in the steam delivery pipe.

9. An electric steamer as described in any one of claims 1 to 7, characterized in that, The housing has a cavity, and the first heating element and the steam secondary heater are both located in the cavity. The base also includes a water pump disposed in the cavity to connect the water inlet and the water tank.

10. An electric steamer as described in any one of claims 1 to 7, characterized in that, The base is also equipped with a control device, which is used to adjust the working status of the steam secondary heater.

Images