Steam generator for cooking kitchenware

Abstract

The utility model provides a steam generator for cooking kitchenware. The steam generator comprises a heating part, a steam output part and a water supply part, the heating part comprises a heating cavity and a heating element; the heating cavity is of an oval tank structure, the end face of the heating cavity is oval, and the heating element and the steam output part are arranged in the long axis direction of the oval of the heating cavity. The heating cavity is divided into an upper half part cavity and a lower half part cavity along the long axis direction; the upper half part cavity and the lower half part cavity are integrated; the lower half part cavity is a water storage cavity, and the upper half part cavity is a steam storage cavity; the heating element is arranged in the water storage cavity, the water supply part is communicated with the water storage cavity, and the steam output part is communicated with the steam storage cavity; the oval heating cavity is adopted, the initial water amount is smaller than that of a cylindrical heating cavity, and under the heating of the electric heating rod with the same power, less heat is needed when water is heated to generate steam.

Description

Technical Field

[0001] This utility model relates to kitchen appliances, and more particularly to a steam generator for steaming and cooking kitchen appliances. Background Technology

[0002] In the field of kitchen appliances, steam generators are indispensable components in steam ovens, steam boilers, and mini steam boilers. Their main function is to generate steam through heating, providing the high-temperature steam environment required for cooking. Currently, the most common steam generators in kitchen appliances are electric heating steam generators. Their heating components include heating elements and a heating chamber. Common heating elements include electric heating rods, which are installed in the heating chamber. Electric current heats water and converts it into steam. The heating chamber serves as the space to hold the water and generate the steam. Its shape can be cylindrical, cuboid, etc.

[0003] However, with increasingly stringent requirements for heating efficiency and energy utilization efficiency, some inherent drawbacks of traditional cylindrical heating chambers are becoming increasingly apparent. For example, due to the circular structure of the chamber, a relatively large amount of water needs to be added initially. This not only increases the initial energy consumption of the equipment but also prolongs the heating time. Furthermore, when generating steam, the cylindrical heating chamber produces steam relatively slowly due to its large water volume, failing to meet the demands of rapid cooking. In some cooking scenarios requiring rapid heating, this delay can significantly impact cooking results and user experience. Utility Model Content

[0004] The main technical problem to be solved by this utility model is to provide a steam generator for steaming and cooking utensils, which adopts an elliptical heating cavity. The initial water volume is less than that of a cylindrical heating cavity. Under the same power of electric heating rod, less heat is required to heat the water to generate steam.

[0005] To solve the above-mentioned technical problems, this utility model provides a steam generator for steaming and cooking utensils, including a heating part, a steam output part, and a water supply part; the heating part includes a heating cavity and a heating element;

[0006] The heating chamber is an elliptical tank structure with an elliptical end face. The heating element and the steam output section are arranged along the major axis of the ellipse of the heating chamber.

[0007] The heating cavity is divided into an upper cavity and a lower cavity along its long axis; the upper cavity and the lower cavity are integrated into a single elliptical cavity.

[0008] The lower half of the cavity is a water storage cavity, and the upper half of the cavity is a steam storage cavity; the heating element is placed inside the water storage cavity, the water supply part is connected to the water storage cavity, and the steam output part is connected to the steam storage cavity.

[0009] In a preferred embodiment, the heating element is an electric heating rod.

[0010] In a preferred embodiment, an isolation plate is provided inside the heating chamber, and the isolation plate separates the heating chamber into two independent chambers along the length of the tank, forming a heating chamber and a water replenishment chamber respectively;

[0011] The heating chamber is divided into a water storage chamber and a steam storage chamber along its long axis; the water replenishment chamber is used to replenish water to the heating chamber.

[0012] In a preferred embodiment, the isolation plate has a first opening and a second opening in the vertical direction along its long axis, and the water replenishment chamber is connected to the heating chamber through the first opening and the second opening;

[0013] The first opening at the top is used to balance the pressure between the heating chamber and the water supply chamber, and the second opening at the bottom is used to supply water.

[0014] In a preferred embodiment, the water supply section includes a water pump and the water replenishment chamber, wherein a liquid level sensor is provided in the water replenishment chamber and the liquid level sensor is electrically connected to the water pump;

[0015] The water supply chamber includes a water inlet, which is connected to the water pump via a water pipe, and a one-way valve is installed at the water inlet.

[0016] In a preferred embodiment, a water inlet conduit is connected to the water inlet, and the water inlet conduit extends from the water inlet into the water replenishment chamber.

[0017] In a preferred embodiment, a drain outlet is provided at the bottom of the water replenishment chamber.

[0018] In a preferred embodiment, the steam output section includes a steam pipe assembly, a temperature sensor, and a pressure sensor, and the steam storage chamber includes a steam outlet, a temperature detection mounting port, and a pressure detection mounting port.

[0019] The steam outlet is connected to the steam pipe assembly, which is used to connect to an external steaming and cooking device; the temperature sensor is installed at the temperature detection port, and the pressure sensor is installed at the pressure detection port.

[0020] In a preferred embodiment, a pressure bypass valve is installed at the steam outlet, the pressure bypass valve being used for steam depressurization or as a steam outlet.

[0021] In a preferred embodiment, the steam output section includes a pressure relief valve and / or a safety valve, and the steam storage chamber is provided with a pressure relief valve mounting port and / or a safety valve mounting port corresponding to the pressure relief valve and / or safety valve.

[0022] Compared with the prior art, the technical solution of this utility model has the following beneficial effects:

[0023] 1. Reduced initial water volume: The elliptical heating chamber requires less initial water compared to traditional cylindrical heating chambers. This means that with the same power electric heating rod, less heat is needed to heat the water to produce steam, thus reducing the initial energy consumption of the equipment.

[0024] 2. Accelerates steam generation: Due to the small initial water volume, the water is heated to generate steam more quickly, which can meet the needs of rapid cooking and improve cooking efficiency. It is especially suitable for some cooking scenarios that require rapid heating, thus improving cooking results and user experience.

[0025] 3. Rational Structure: The heating chamber is divided into an upper chamber (steam storage chamber) and a lower chamber (water storage chamber) along its long axis. The heating element is placed in the water storage chamber, where it heats the water and converts it into steam. After the steam is generated, due to the structural design of the heating chamber, the steam will naturally rise into the steam storage chamber, realizing an integrated heating and steam storage system. Attached Figure Description

[0026] Figure 1 This is an exploded view of the overall structure of the steam generator in a preferred embodiment of the present invention;

[0027] Figure 2 This is a schematic diagram of the overall appearance of the steam generator in a preferred embodiment of the present invention;

[0028] Figure 3 This is a cross-sectional view of the overall internal structure of the steam generator in a preferred embodiment of the present invention;

[0029] Figure 4 This is a schematic diagram of the structure in a preferred embodiment of the present invention, showing the heating element placed inside the water storage chamber;

[0030] Figure 5 This is a schematic diagram showing the structural distribution of the heating cavity, water replenishment cavity, and transition cavity of the heating cavity in a preferred embodiment of the present invention.

[0031] Explanation of reference numerals in the attached drawings: 1. Heating section; 11. Heating chamber; 111. Water storage chamber; 112. Steam storage chamber; 1121. Steam outlet; 1122. Temperature sensor mounting port; 1123. Pressure sensor mounting port; 1124. Pressure relief valve mounting port; 1125. Safety valve mounting port; 113. Isolation plate; 1131. First opening; 1132. Second opening; 114. Heating chamber; 115. Water supply chamber; 1151. Liquid level sensor; 1152. Water inlet; 1153. Check valve; 1154. Water inlet pipe; 1155. Drain outlet; 1156. Liquid level sensor mounting port; 116. Transition chamber; 12. Heating element; 2. Steam output section; 21. Temperature sensor; 22. Pressure sensor; 23. Pressure bypass valve; 24. Pressure relief valve; 25. Safety valve. Detailed Implementation

[0032] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0033] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "top / bottom," etc., indicating the orientation or positional relationship are 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, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0034] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed", "equipped with", "sleeved / connected", "connected", etc., should be interpreted broadly. For example, "connection" can be a wall-mounted connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0035] refer to Figures 1-5This embodiment provides a steam generator for steaming and cooking appliances. This steam generator, used in steaming and cooking equipment, offers advantages such as rapid steam generation, high steam temperature, short steaming time, low water consumption, and energy efficiency, significantly improving the performance and user experience of steaming and cooking equipment. This steaming and cooking equipment is suitable for various scenarios such as home kitchens, restaurants, and canteens, and has broad application prospects.

[0036] The steam generator includes a heating section 1, a steam output section 2, and a water supply section. The heating section 1 includes a heating chamber 11 and a heating element 12. The heating chamber 11 has an elliptical tank structure with an elliptical end face. The heating element 12 and the steam output section 2 are arranged along the major axis of the ellipse of the heating chamber 11. The heating chamber 11 is divided into an upper chamber and a lower chamber along its major axis. The upper and lower chambers are integrated, forming a single elliptical chamber. The lower chamber is a water storage chamber 111, and the upper chamber is a steam storage chamber 112. The heating element 12 is placed inside the water storage chamber 111. The water supply section is connected to the water storage chamber 111 to provide water to the heating chamber 11, ensuring that the steam generator can continuously produce steam. The steam output section 2 is connected to the steam storage chamber 112 to output the generated steam to external steaming and cooking equipment, achieving effective utilization of the steam.

[0037] like Figure 5 The heating element 12 is an electric heating rod, which is placed in the water storage chamber 111 to heat the water and generate steam. The heating power and heating time of the electric heating rod can be precisely controlled by an electronic control system, converting water into steam through electric current heating. After steam is generated, due to the structural design of the heating chamber 11, the steam will naturally rise into the steam storage chamber 112.

[0038] like Figure 4 By utilizing a reasonable structural layout, the heating cavity 11 is divided into an upper cavity (steam storage cavity 112) and a lower cavity (water storage cavity 111) along the long axis. The heating element 12 is placed inside the water storage cavity 111. Taking advantage of the characteristics of the major and minor axes of an ellipse, the heating element 12 is set at the bottom of the heating cavity 11 along the major axis. Compared with a cylindrical heating cavity 11 of the same volume, at the same height, the elliptical water storage cavity 111 has a smaller volume because the length of the minor axis is smaller than the radius of the circle. Therefore, less water is required when initially adding water. Under the same heating power, the less initial water, the shorter the heating time required to reach the same temperature, thereby reducing initial energy consumption.

[0039] Specifically, an isolation plate 113 is provided inside the heating chamber 11, which isolates the heating chamber 11 into two independent chambers along the length of the tank, forming a heating chamber 114 and a water supply chamber 115 respectively; the heating chamber 114 is divided into a water storage chamber 111 and a steam storage chamber 112 along its long axis; the water supply chamber 115 is used to supply water to the heating chamber 114. The water supply process and the steam generation process are independent of each other but also cooperate with each other, ensuring the normal operation of the steam generator.

[0040] By installing an isolation plate 113 inside the heating chamber 11, two independent chambers (heating chamber 114 and water replenishment chamber 115) are separated from the heating chamber 11, making the water replenishment process more optimized. The water replenishment chamber 115 can replenish water to the heating chamber 114 independently. The presence of the isolation plate 113 separates the heating chamber 114 and the water replenishment chamber 115, so that the high-temperature steam and hot water in the heating chamber 114 are relatively isolated from the water in the water replenishment chamber 115. This avoids interference with the steam generation process in the heating chamber 114 during the water replenishment process, and improves the water replenishment efficiency and the operational stability of the steam generator.

[0041] like Figure 1 The isolation plate 113 has a specific structure in which a first opening 1131 and a second opening 1132 are formed vertically along its long axis. The water supply chamber 115 is connected to the heating chamber 114 through the first opening 1131 and the second opening 1132. The first opening 1131, located at the top, is used to balance the pressure between the heating chamber 114 and the water supply chamber 115, keeping the pressure difference between the two chambers within a reasonable range. This prevents problems such as difficulty in water supply or steam leakage due to excessive pressure difference, thereby improving the operational stability and safety of the steam generator. The second opening 1132, located at the bottom, is used for water supply, allowing water in the water supply chamber 115 to flow smoothly into the heating chamber 114, improving water supply efficiency and ensuring that there is sufficient water in the heating chamber 114 for steam generation.

[0042] like Figure 3 The specific structure of the water supply section is as follows: the water supply section includes a water pump and a water replenishment chamber 115. A liquid level sensor 1151 is installed in the water replenishment chamber 115, and the liquid level sensor 1151 is electrically connected to the water pump. The water replenishment chamber 115 includes a water inlet 1152 and a liquid level sensor mounting port 1156. The liquid level sensor mounting port 1156 is used to install the liquid level sensor 1151. The water inlet 1152 is connected to the water pump through a water pipe. A one-way valve 1153 is installed at the water inlet 1152. The one-way valve 1153 is used for one-way water intake at the water inlet 1152 to prevent water backflow and ensure the stable operation of the water supply section.

[0043] A liquid level sensor 1151 is installed inside the water replenishment chamber 115. The sensor detects the water level within the chamber and feeds it back to the water pump. The pump's operation is controlled based on the water level. When the water level is below a set value, the pump automatically starts replenishing water; when the water level reaches the set value, the pump stops replenishing water, achieving precise water replenishment control. The liquid level sensor 1151 can detect the water level in the replenishment chamber 115 in real time, enabling automatic water replenishment, avoiding unnecessary replenishment operations, reducing energy consumption, and improving the energy-saving performance of the equipment.

[0044] like Figure 3 Two isolation plates 113 can be set up to isolate a transition chamber 116 within the water supply chamber 115. The transition chamber 116 acts as a buffer, further separating the water in the water supply chamber 115. When the water boils, a large number of bubbles are generated. These bubbles can interfere with the normal operation of the liquid level sensor 1151, leading to inaccurate water level detection. By setting up the transition chamber 116, the water is first heated and steam is generated within the transition chamber 116. The bubbles are mainly concentrated within the transition chamber 116, while the water level in the water supply chamber 115 is relatively low. Furthermore, due to the buffering effect of the transition chamber 116, the bubbles will not directly interfere with the liquid level sensor 1151 in the water supply chamber 115, thus ensuring the stability of water level detection.

[0045] like Figure 3 , Figure 4 To further optimize the water supply, a water inlet conduit 1154 is connected to the water inlet 1152. The water inlet conduit 1154 extends from the water inlet 1152 into the water replenishment chamber 115. The water inlet conduit 1154 guides the water flow directly into the bottom of the water replenishment chamber 115, preventing the water flow from directly impacting the level sensor 1151 inside the chamber. This reduces the impact and interference of water flow on the components inside the chamber, extending their service life. It also prevents the level sensor 1151 from being affected when water is added.

[0046] The bottom of the water replenishment chamber 115 is provided with a drain port 1155 for draining sewage, which facilitates regular cleaning of scale and impurities, reduces the accumulation of dirt inside the equipment, extends the service life of the equipment, and reduces maintenance costs.

[0047] like Figure 2The specific structure of the steam output section 2 is as follows: The steam output section 2 includes a steam pipe assembly (not shown in the figure), a temperature sensor 21, and a pressure sensor 22. The steam storage chamber 112 includes a steam outlet 1121, a temperature detection mounting port 1122, and a pressure detection mounting port 1123. The steam outlet 1121 is connected to the steam pipe assembly, which is used to connect to external steaming and cooking equipment, allowing the steam generator to be easily connected to external steaming and cooking equipment, realizing effective steam output and utilization, and improving the versatility and practicality of the steam generator. The temperature sensor 21 is installed in the temperature detection mounting port 1122, and the pressure sensor 22 is installed in the pressure detection mounting port 1123, which can monitor the temperature and pressure of the steam in real time, providing accurate parameter information for the operation of the steam generator, facilitating precise control of the steam generator, and ensuring the quality and safety of the steam.

[0048] A pressure bypass valve 23 is installed at the steam outlet 1121. The pressure bypass valve 23 is used for steam pressure relief or as the steam outlet 1121. The pressure bypass valve 23 can function as both a steam pressure relief device and a steam outlet 1121, increasing the flexibility of the steam generator. Under normal conditions, the pressure bypass valve 23 can act as the steam outlet 1121, outputting steam to external equipment. When the pressure is too high, the pressure bypass valve 23 can automatically open to relieve pressure, discharging excess steam and ensuring the safe operation of the steam generator.

[0049] To further enhance the safe operation of the steam generator, the steam output section 2 includes a pressure relief valve 24 and / or a safety valve 25. The steam storage chamber 112 is provided with mounting ports 1124 and / or 1125 for the pressure relief valve 24 and / or safety valve 25. The pressure relief valve 24 and / or safety valve 25 are electrically connected to a pressure sensor 22, which measures the pressure of the steam in the steam storage chamber 112. When the pressure exceeds a preset value of the pressure sensor 22, the pressure relief valve 24 and / or safety valve 25 release pressure from the steam storage chamber 112. The pressure sensor 22 and the pressure relief valve 24 and / or safety valve 25 monitor and implement safe pressure relief.

[0050] The above description is only a preferred embodiment of the present utility model, but the design concept of the present utility model is not limited thereto. Any non-substantial modifications made to the present utility model by those skilled in the art within the scope of the technology disclosed in the present utility model using this concept shall be deemed as an infringement of the protection scope of the present utility model.

Claims

1. A steam generator for cooking appliances, characterized in that: It includes a heating section, a steam output section, and a water supply section; the heating section includes a heating chamber and a heating element; The heating chamber is an elliptical tank structure with an elliptical end face. The heating element and the steam output section are arranged along the major axis of the ellipse of the heating chamber. The heating cavity is divided into an upper cavity and a lower cavity along its long axis; the upper cavity and the lower cavity are integrated into a single elliptical cavity. The lower half of the cavity is a water storage cavity, and the upper half of the cavity is a steam storage cavity; the heating element is placed inside the water storage cavity, the water supply part is connected to the water storage cavity, and the steam output part is connected to the steam storage cavity.

2. A steam generator for cooking appliances according to claim 1, characterized in that: The heating element is an electric heating rod.

3. A steam generator for cooking utensils according to claim 1, characterized in that: An isolation plate is installed inside the heating chamber, which separates the heating chamber into two independent chambers along the length of the tank, forming a heating chamber and a water supply chamber respectively. The heating chamber is divided into a water storage chamber and a steam storage chamber along its long axis; the water replenishment chamber is used to replenish water to the heating chamber.

4. A steam generator for cooking utensils according to claim 3, characterized in that: The isolation plate has a first opening and a second opening in the vertical direction along the long axis, and the water replenishment chamber is connected to the heating chamber through the first opening and the second opening. The first opening at the top is used to balance the pressure between the heating chamber and the water supply chamber, and the second opening at the bottom is used to supply water.

5. A steam generator for cooking appliances according to claim 3, characterized in that: The water supply section includes a water pump and the water replenishment chamber. A liquid level sensor is installed in the water replenishment chamber and is electrically connected to the water pump. The water supply chamber includes a water inlet, which is connected to the water pump via a water pipe, and a one-way valve is installed at the water inlet.

6. A steam generator for cooking utensils according to claim 5, characterized in that: A water inlet pipe is connected to the water inlet, and the water inlet pipe extends from the water inlet into the water replenishment chamber.

7. A steam generator for cooking utensils according to claim 5, characterized in that: The bottom of the water replenishment chamber is provided with a drain outlet.

8. A steam generator for cooking appliances according to claim 1, characterized in that: The steam output section includes a steam pipe assembly, a temperature sensor, and a pressure sensor; the steam storage chamber includes a steam outlet, a temperature detection mounting port, and a pressure detection mounting port. The steam outlet is connected to the steam pipe assembly, which is used to connect to an external steaming and cooking device; the temperature sensor is installed at the temperature detection port, and the pressure sensor is installed at the pressure detection port.

9. A steam generator for cooking appliances according to claim 8, characterized in that: A pressure bypass valve is installed at the steam outlet, which is used for steam depressurization or as a steam outlet.

10. A steam generator for cooking appliances according to claim 9, characterized in that: The steam output section includes a pressure relief valve and / or a safety valve, and the steam storage chamber is provided with a pressure relief valve mounting port and / or a safety valve mounting port for installation corresponding to the pressure relief valve and / or safety valve.

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