Air pressure balancing device and cooking equipment

Abstract

The utility model relates to the technical field of kitchen appliances, and discloses an air pressure balancing device and cooking equipment, the air pressure balancing device comprises a support cover, a pressure relief pipe and a pressure relief cap, the pressure relief pipe is supported on the support cover, and the pressure relief pipe is provided with a central channel; an air inlet is formed between the pressure relief pipe and the supporting cover and / or in the supporting cover, and the air inlet is communicated with the central channel; the pressure relief cap is fixedly arranged at the top end of the pressure relief pipe in a sleeving mode, and a plurality of diaphragms formed through cutting are arranged on the top end face of the pressure relief cap. And when the pressure of the internal airflow reaches a preset value, the diaphragm can be jacked open by the airflow along the cutting line, so that a pressure relief opening is formed. According to the air pressure balancing device, the top end face of the pressure relief cap is cut to form a plurality of diaphragms, so that excessive air can be quickly exhausted when the air pressure in the cavity rises; meanwhile, the diaphragm can automatically adjust the size of a pressure relief opening along with the change of air pressure, and can automatically rebound to the original position to realize quick sealing after pressure relief is completed; not only is the pressure relief efficiency improved, but also the sealing performance and the safety of equipment are ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of kitchen appliances, in particular to an air pressure balancing device and cooking equipment. Background Art

[0002] Steam ovens often preheat the oven cavity during cooking. After preheating, when the user opens the oven door to place food in, and then closes the door again, the sudden influx of outside air causes a sharp increase in pressure, resulting in door tremors. This is especially true when large amounts of steam are generated during cooking, causing the cavity pressure to rise continuously. If the pressure is not released in time, the high pressure inside the cavity may cause the steam to push the door open, posing a safety hazard.

[0003] Traditional steam ovens typically incorporate a pressure relief device to address the issue of excessive pressure within the oven cavity. However, existing pressure relief devices have design flaws. On the one hand, if the pressure relief opening is too large, excessive steam generated during cooking can leak out, making it difficult to maintain temperature and humidity within the oven cavity, impacting cooking results. On the other hand, if the pressure relief opening is not properly controlled as steam increases, the steam may push open the door, affecting the device's sealing and user experience. Therefore, there is an urgent need for a pressure-balancing device that can effectively balance the air pressure within the oven cavity, prevent door vibration, and reduce steam leakage. Utility Model Content

[0004] Based on the technical problem that the pressure relief port of the pressure relief device in the prior art is too large or too small, resulting in the inability to effectively balance the air pressure in the cavity, the utility model provides an air pressure balancing device, which forms multiple diaphragms by cutting on the top surface of the pressure relief cap, and can quickly discharge excess gas when the air pressure in the cavity increases; at the same time, the diaphragm can also automatically adjust the size of the pressure relief port as the air pressure changes, and after the pressure relief is completed, it can automatically rebound to its original position to achieve rapid sealing; it not only improves the pressure relief efficiency, but also ensures the sealing and safety of the equipment.

[0005] The utility model provides an air pressure balancing device, comprising:

[0006] Support cover;

[0007] a pressure relief pipe supported on the support cover, the pressure relief pipe having a central channel; an air inlet provided between the pressure relief pipe and the support cover and / or on the support cover, the air inlet being in communication with the central channel;

[0008] The pressure relief cap is fixedly mounted on the top end of the pressure relief pipe. The top end surface of the pressure relief cap is provided with a plurality of diaphragms formed by cutting. When the internal airflow pressure reaches a predetermined value, the diaphragms can be pushed open by the airflow along the cutting line, thereby forming a pressure relief port.

[0009] In some embodiments, the upper surface of the support cover has a downwardly concave press-type structure.

[0010] In some embodiments, it is characterized in that

[0011] The support cover is provided with at least two upwardly protruding bosses;

[0012] The pressure relief pipe includes a cylinder portion and a flange portion connected to the bottom end of the cylinder portion, wherein the flange portion is supported on the boss portion; an air inlet is formed between adjacent boss portions.

[0013] In some embodiments, the boss portion and the flange portion are respectively provided with mounting holes for fixing the air pressure balancing device.

[0014] In some embodiments, the pressure relief cap is made of a flexible material, and the top surface of the pressure relief cap is formed into the diaphragm through a cross cut.

[0015] In some embodiments, an annular limiting protrusion is provided on the outer peripheral wall of the pressure relief pipe, and the pressure relief cap is tightly sleeved on the pressure relief pipe through the limiting protrusion.

[0016] In some embodiments, the membranes are of the same size and symmetrically distributed.

[0017] The utility model also includes a cooking device, including a box body, an inner pot arranged in the box body, and the above-mentioned air pressure balancing device, wherein a mounting hole for installing the air pressure balancing device is opened on the inner pot; the support cover is connected to the inner side wall of the inner pot, and the pressure relief pipe and the pressure relief cap extend out of the mounting hole.

[0018] In some embodiments, a heat dissipation duct is provided between the box body and the inner tank, and the air pressure balancing device is connected to the heat dissipation duct.

[0019] In some embodiments, a sealing gasket is provided between the air pressure balancing device and the inner wall of the inner container.

[0020] Compared with the prior art, the advantages and positive effects of the present invention are:

[0021] The above-mentioned air pressure balancing device achieves precise control of the pressure relief process by cutting multiple diaphragms on the top surface of the pressure relief cap. When the air pressure in the cavity rises to a predetermined value, the airflow pushes open the diaphragm to form a pressure relief port, quickly discharging excess gas and effectively reducing the pressure in the cavity. The diaphragm can automatically adjust the size of the pressure relief port as the air pressure changes, ensuring efficient and stable pressure relief. After the pressure relief is completed, the diaphragm automatically rebounds to its original position, achieving rapid sealing, preventing external air from entering, and protecting the cooking environment. This air pressure balancing device not only improves the pressure relief efficiency, but also ensures the sealing and safety of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0023] Figure 1 This is a schematic structural diagram of the air pressure balancing device of the utility model;

[0024] Figure 2 This is an exploded view of the air pressure balancing device of the utility model;

[0025] Figure 3 This is a top view of the air pressure balancing device of the utility model;

[0026] Figure 4 for Figure 3 AA cross-section of

[0027] Figure 5 Schematic diagram of the air flow entering the air inlet formed between the boss portions in the air pressure balancing device of the present invention;

[0028] Figure 6 This is a schematic diagram of the structure of the air pressure balancing device of the utility model installed on the inner tank;

[0029] Description of reference numerals:

[0030] 1-Inner liner;

[0031] 100-support cover; 110-air inlet; 120-profile structure; 130-boss portion; 131-mounting fixing hole;

[0032] 200 - pressure relief pipe; 210 - barrel; 211 - limiting protrusion; 220 - flange; 221 - mounting hole;

[0033] 300-pressure relief cap; 310-diaphragm;

[0034] 400-Sealing gasket. DETAILED DESCRIPTION

[0035] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0036] In the description of the present invention, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0037] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections. A person of ordinary skill in the art can understand the specific meanings of the above terms in the present invention based on the specific circumstances. In the description of the above embodiments, specific features, structures, materials, or characteristics can be combined in any appropriate manner in any one or more embodiments or examples.

[0038] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Therefore, a feature specified as "first" or "second" may explicitly or implicitly include one or more of such features. In the description of this utility model, unless otherwise specified, "plurality" means two or more.

[0039] Reference Figures 1-6 This is one embodiment of the air pressure balancing device of the present invention. This air pressure balancing device is installed in the cavity of a cooking device and automatically relieves pressure when the air pressure in the cavity is too high. This prevents excessive air pressure from causing steam to push the door open, or external air from entering the cavity when the door is opened and closed during cooking, causing a transient increase in air pressure and door vibration. Cooking equipment includes but is not limited to steamers, ovens, and microwave ovens.

[0040] The air pressure balancing device includes a support cover 100 , a pressure relief pipe 200 and a pressure relief cap 300 .

[0041] The support cover 100 is used to provide stable support so that the air pressure balancing device can be installed inside the cavity.

[0042] The pressure relief pipe 200 is supported and fixed on the support cover 100 , and has a central channel inside.

[0043] like Figure 4 and Figure 5As shown, an air inlet 110 is provided between the support cover 100 and the pressure relief pipe 200, or an air inlet 110 is opened on the support cover 100, or in order to improve the air intake efficiency and the pressure relief effect, an air inlet 110 is provided between the support cover 100 and the pressure relief pipe 200 and on the support cover 100. The air inlet 110 is connected to the central channel of the pressure relief pipe 200.

[0044] The pressure-balancing device is installed in the cooking appliance's cavity. When the cavity pressure rises to a predetermined value, the airflow pushes open the diaphragm 310 on the pressure relief cap 300, allowing excess gas to escape through the pressure relief port, reducing the cavity pressure. After pressure relief is complete, the diaphragm 310 automatically rebounds to its original position along the cut line, quickly sealing the cavity.

[0045] The above-mentioned air pressure balancing device realizes precise control of the pressure relief process by cutting and forming multiple diaphragms 310 on the top surface of the pressure relief cap 300. When the air pressure in the cavity rises to a predetermined value, the airflow pushes open the diaphragm 310 to form a pressure relief port, quickly discharges excess gas, and effectively reduces the pressure in the cavity. The diaphragm 310 can automatically adjust the size of the pressure relief port as the air pressure changes to ensure efficient and stable pressure relief. After the pressure relief is completed, the diaphragm 310 automatically rebounds to its original position to achieve rapid sealing, prevent external air from entering, and protect the cooking environment. The air pressure balancing device not only improves the pressure relief efficiency, but also ensures the sealing and safety of the equipment.

[0046] In this embodiment, if Figure 2 As shown, a downwardly concave profile structure 120 is provided on the upper surface of the support cover 100. The profile structure 120 not only strengthens the support cover 100, but also collects condensed water generated by the air pressure balancing device to prevent the condensed water from dripping into the cooking cavity and affecting the cooking effect.

[0047] In this embodiment, the support cover 100 is provided with at least two upwardly protruding bosses 130 , and the bosses 130 serve as support bases for the pressure relief pipe 200 .

[0048] The pressure relief pipe 200 includes a cylindrical portion 210 and a flange portion 220 at the bottom end of the cylindrical portion 210. The flange portion 220 is connected to the boss portion 130 of the support cover 100, securing the pressure relief pipe 200 in place via the support cover 100. Spacing areas are formed between the boss portions 130, serving as air inlets 110, thereby providing a path for the air pressure within the cavity to enter the pressure relief pipe 200. The large area of ​​the air inlets 110 between the boss portions 130 ensures smooth airflow into the pressure relief pipe 200.

[0049] The boss portion 130 and the flange portion 220 are provided with mounting holes 131 / 221 respectively. Figure 6As shown, the mounting holes allow the pressure relief device to be securely installed within the cavity. Even when high-pressure airflow occurs during cooking, the device remains stable and unaffected by pressure fluctuations. The mounting holes ensure the device's stability under various pressure environments.

[0050] In this embodiment, the pressure relief cap 300 is made of a flexible material, such as silicone, which allows the pressure relief cap 300 to deform slightly when the air pressure rises and release the airflow through the diaphragm 310 at the top.

[0051] Specifically, the top surface of the pressure relief cap 300 is formed into four diaphragms 310 through a cross cut. The four diaphragms 310 are of the same size and symmetrically distributed, making the discharge of airflow more stable and dispersed, and reducing the pressure of high airflow impact on the pressure relief cap 300.

[0052] like Figure 2 An annular stopper protrusion 211 is provided on the outer circumference of the pressure relief pipe 200, and the pressure relief cap 300 is tightly fitted onto the pressure relief pipe 200 via the stopper protrusion 211. The stopper protrusion 211 stabilizes the pressure relief cap 300, preventing it from falling off or shifting due to pressure fluctuations, ensuring that the pressure balancing device maintains a tight seal during operation. Furthermore, the stopper protrusion 211 ensures a good seal between the pressure relief pipe 200 and the pressure relief cap 300, reducing the possibility of steam leakage.

[0053] The utility model also includes a cooking device, which includes a box body and an inner pot 1 arranged in the box body. The inner pot 1 forms an inner cavity for cooking food, and an air pressure balancing device is installed on the inner pot 1.

[0054] Specifically, the inner liner 1 has a mounting hole, into which the pressure balancing device is installed. The pressure relief tube 200 and pressure relief cap 300 extend through the mounting hole and out of the inner liner 1. The support cover 100 is located within the inner liner 1 and is fixed to the inner wall of the inner liner 1 using screws or other fasteners. The pressure relief device is installed from within the inner liner 1, making it easy to install and maintain.

[0055] See also Figure 6 A heat dissipation duct is also provided between the housing and the inner pot 1 to discharge the large amount of heat and steam generated during cooking. The air pressure balance device is connected to the heat dissipation duct, and the exhaust gas during pressure relief is directly discharged into the heat dissipation duct, eliminating the need for a separate exhaust duct.

[0056] A sealing gasket 400 is provided between the pressure balancing device and the inner wall of the inner pot 1 to ensure the sealing of the device after installation. The design of the sealing gasket 400 prevents external air from entering the cavity and affecting the pressure balance and temperature control, thereby ensuring a stable cooking environment.

[0057] In this embodiment, the sealing gasket 400 is sleeved on the pressure relief pipe 200 and is located between the flange portion 220 of the pressure relief pipe 200 and the inner wall of the inner container 1 .

[0058] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the above embodiments, it is still possible for a person skilled in the art to modify the technical solutions described in the above embodiments, or to replace some of the technical features therein with equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions claimed to be protected by the present invention.

Claims

1. An air pressure balancing device, characterized in that: include: Support cover; a pressure relief pipe, supported on the support cover, the pressure relief pipe having a central channel; An air inlet is provided between the pressure relief pipe and the support cover and / or on the support cover, and the air inlet is communicated with the central channel; The pressure relief cap is fixedly mounted on the top end of the pressure relief pipe. The top end surface of the pressure relief cap is provided with a plurality of diaphragms formed by cutting. When the internal airflow pressure reaches a predetermined value, the diaphragms can be pushed open by the airflow along the cutting line, thereby forming a pressure relief port.

2. The air pressure balancing device according to claim 1, characterized in that: The upper surface of the support cover has a downwardly concave press-type structure.

3. The air pressure balancing device according to claim 1, characterized in that: The support cover is provided with at least two upwardly protruding bosses; The pressure relief pipe includes a cylinder portion and a flange portion connected to the bottom end of the cylinder portion, wherein the flange portion is supported on the boss portion; an air inlet is formed between adjacent boss portions.

4. The air pressure balancing device according to claim 3, characterized in that: The boss portion and the flange portion are respectively provided with mounting holes for fixing the air pressure balancing device.

5. The air pressure balancing device according to claim 1, characterized in that: The pressure relief cap is made of a flexible material, and the top surface of the pressure relief cap is formed into the diaphragm through a cross cut.

6. The air pressure balancing device according to claim 5, characterized in that: An annular limiting protrusion is provided on the outer peripheral wall of the pressure relief pipe, and the pressure relief cap is tightly sleeved on the pressure relief pipe through the limiting protrusion.

7. The air pressure balancing device according to claim 1, characterized in that: The diaphragms are of the same size and are symmetrically distributed.

8. A cooking device comprising a box body and an inner pot arranged in the box body, characterized in that: It also includes the air pressure balancing device according to any one of claims 1 to 7, wherein a mounting hole for mounting the air pressure balancing device is provided on the inner liner; the support cover is connected to the inner side wall of the inner liner, and the pressure relief pipe and the pressure relief cap extend out of the mounting hole.

9. The cooking device according to claim 8, characterized in that A heat dissipation duct is provided between the box body and the inner container, and the air pressure balancing device is communicated with the heat dissipation duct.

10. The cooking device according to claim 8, characterized in that A sealing gasket is provided between the air pressure balancing device and the inner side wall of the inner container.

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