Air exhausting and pressure relieving valve device and cooking equipment

Abstract

The invention provides an air exhausting and pressure relieving valve device and cooking equipment. The air exhausting and pressure relieving valve device comprises a shell and a pressure relieving assembly. The shell is provided with an air inlet and an air outlet; the pressure buffering assembly comprises a body and an adjusting plate. The top end of the body is closed, the bottom end is connected with the air inlet, and a ventilation notch is formed in the top of the side wall; the top end of the body extends downwards to be provided with a guide rod. The adjusting plate comprises a sliding plate, the edge of the sliding plate extends upwards to be provided with a baffle, and the edge of the sliding plate is further provided with a notch; the sliding plate is arranged on the periphery of the guide rod in a sleeving mode, and a spring is arranged between the sliding plate and the top of the body. According to the air exhausting and pressure relieving valve device and the cooking equipment, the air pressure of the air exhausting opening can be dynamically adjusted according to the air pressure fluctuation of the air inlet of the air exhausting channel, the air exhausting pressure is stabilized, excessive noise is reduced, and water or other substances at the air exhausting opening are prevented from being sputtered out.

Description

Technical Field

[0001] The invention relates to the technical field of kitchen appliances, and in particular to an exhaust pressure relief valve device and a cooking device. Background Art

[0002] Existing kitchen equipment, such as integrated stoves, range hoods, and dishwashers, all have necessary exhaust systems. Gas flows out from a chamber (such as the washing chamber of a dishwasher, hereinafter referred to as the chamber), and is discharged through the exhaust channel to the exhaust outlet. In this exhaust system, if the air pressure in the chamber suddenly increases, the turbulent airflow will impact the exhaust channel and the exhaust outlet area, resulting in abnormal noise and vibration, and may even splash residual water and other substances at the exhaust outlet.

[0003] Therefore, it is necessary to provide an improved technical solution to address the above-mentioned deficiencies in the prior art. Summary of the invention

[0004] The object of the present invention is to provide an exhaust pressure-relief valve device, which can dynamically adjust the air pressure at the exhaust port according to the air pressure fluctuation at the air inlet of the exhaust passage, stabilize the exhaust pressure, reduce the generation of unnecessary noise, and prevent water or other substances from splashing out at the exhaust outlet.

[0005] Another object of the present invention is to provide a cooking device, which includes the above-mentioned exhaust pressure relief valve device, which can dynamically adjust the air pressure at the exhaust port according to the air pressure fluctuation at the air inlet of the exhaust channel, stabilize the exhaust pressure, reduce the generation of unnecessary noise, and prevent water or other substances from splashing out at the exhaust outlet.

[0006] In order to achieve the above object, the present invention provides the following technical solutions:

[0007] An exhaust pressure relief valve device comprises a housing and a pressure relief assembly arranged in the housing; the housing is provided with an air inlet and an exhaust port;

[0008] The pressure relief assembly includes a main body and an adjustment plate arranged in the main body; the main body is cylindrical, the top end of the main body is closed, the bottom end of the main body is connected to the air inlet, and the top of the side wall of the main body is provided with a ventilation slot; the inner wall of the bottom end of the main body extends inwardly to provide a limit plate, and the top of the main body extends downward to provide a guide rod; the adjustment plate includes a slide plate corresponding to the cross-section of the main body, the edge of the slide plate extends upward to provide a baffle corresponding to the shape of the ventilation slot, and the edge of the slide plate is also provided with a notch; a guide hole is provided in the middle of the slide plate, and the slide plate is sleeved on the outer periphery of the guide rod through the guide hole and slides between a first position and a second position; a spring is provided between the slide plate and the top of the main body, so that the slide plate is against the limit plate when it is in the first position; when the slide plate slides upward from the first position to the second position, the area of ​​the ventilation slot blocked by the baffle gradually increases.

[0009] According to one embodiment of the present invention, a pad is provided on the limiting plate, so that the slide plate contacts the pad when located at the first position, and an air intake space is formed between the slide plate and the limiting plate, and an air outlet is provided on the side wall of the air intake space.

[0010] According to one embodiment of the present invention, an S-shaped guide groove is provided on the outer periphery of the guide rod, and the guide groove extends along the axial direction of the guide rod; a guide slider is provided on the inner wall of the guide hole, and the guide slider is located in the guide groove; when the slide plate is located at the first position, the baffle plate and the ventilation slot are offset.

[0011] According to one embodiment of the present invention, there are two guide grooves, which are symmetrically arranged on both sides of the guide rod; there are also two guide sliders, which are respectively located on the inner walls on both sides of the guide hole.

[0012] According to one embodiment of the present invention, a cylindrical guide sleeve is extended upwardly from the outer circumference of the guide hole, and the inner diameter of the guide sleeve corresponds to the outer diameter of the guide rod.

[0013] According to one embodiment of the present invention, an annular gasket is provided at the bottom end of the spring, and a protrusion is provided at the bottom end of the gasket.

[0014] According to one embodiment of the present invention, the main body comprises a valve seat and a valve cover; the valve seat comprises a cylindrical seat body, the inner wall of one end of the seat body is provided with the limiting plate, and the other end of the seat body is detachably connected to the valve cover; the guide rod is fixedly connected to the bottom of the valve cover;

[0015] And / or, the shell includes an upper shell and a lower shell, and the bottom of the upper shell is detachably connected to the top of the lower shell; the air inlet is arranged at the bottom of the lower shell, and the exhaust port is arranged at the top of the upper shell.

[0016] According to one embodiment of the present invention, vertical connecting rods are provided at both ends of the valve cover, and connecting holes corresponding to the connecting rods are provided at both ends of the valve seat.

[0017] According to one embodiment of the present invention, a connecting tube extending downward is provided at the bottom of the valve seat, and an outer wall of the connecting tube is connected to an inner wall of the air inlet through threads.

[0018] The present invention also provides a cooking device, comprising the above-mentioned exhaust pressure-relief valve device.

[0019] Compared with the prior art, the advantages and beneficial effects of the embodiments of the present invention are:

[0020] When the exhaust pressure relief valve device and the cooking device provided by the embodiment of the present invention are in use, when the pressure in the chamber of the cooking device is equal to or slightly higher than the atmospheric pressure, the slide plate of the adjustment plate contacts or approaches the limit plate, and at this time, the baffle of the adjustment plate does not cover or slightly covers the ventilation slot. At this time, the gas in the chamber of the cooking device enters the bottom of the body through the air inlet through the air inlet, flows into the inside of the adjustment plate from the notch at the edge of the slide plate, and flows into the inside of the shell from the ventilation slot of the body, and finally flows out from the exhaust port of the shell, and is discharged from the exhaust pipe to the outside of the cooking device. When the adjustment plate is in the first position, the baffle does not cover the ventilation slot at all, and the ventilation area of ​​the pressure relief assembly is the largest. When the pressure in the chamber of the cooking device is relatively higher or much higher than the atmospheric pressure, the adjustment plate is acted on by the gas pressure and slides upward along the guide rod. Finally, after the gas pressure is balanced, the slide plate of the adjustment plate is close to or very close to the top of the body, and at this time, the baffle of the adjustment plate covers part or most of the ventilation slot. At this time, the gas in the chamber of the cooking device enters the bottom of the body through the air inlet through the air inlet, flows into the inside of the adjustment plate from the notch on the edge of the slide, flows into the inside of the shell from the ventilation slot of the body, and finally flows out from the exhaust port of the shell, and is discharged from the exhaust pipe to the outside of the cooking device. When the adjustment plate is in the second position, the baffle blocks most of the area of ​​the ventilation slot, the ventilation area of ​​the pressure relief component is the smallest, and the high-pressure gas in the chamber of the cooking device will flow out quickly from the smallest ventilation area, and the cross-sectional area of ​​the space from the top of the body to the exhaust port is larger than the cross-sectional area of ​​the air inlet, which can absorb the kinetic energy of the high-speed airflow, so that the gas pressure and flow rate at the exhaust port increase in a slower form, avoiding the problem of residual water or oil stains being splashed out due to the sudden increase in air pressure at the end of the exhaust pipe (the exhaust outlet of the cooking device). At the same time, it can solve the problem of large pressure attenuation in the chamber when the integrated stove or the steaming and baking module of the steaming and baking device is running for cooking. As the air pressure in the space from the top of the main body to the exhaust port increases (basically equal to the pressure in the exhaust duct), the adjustment plate gradually descends toward the first position, and the ventilation area of ​​the pressure relief assembly gradually increases, thereby making the exhaust smoother and stabilizing the air pressure in the exhaust duct, thereby solving the problem of additional noise caused by uneven air pressure vibration in the exhaust duct due to abnormal operation of the fan in the exhaust system of the integrated stove or range hood. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The drawings constituting a part of the present invention are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. Among them:

[0022] Figure 1 A schematic diagram of the structure of an exhaust pressure relief valve device provided in an embodiment of the present invention;

[0023] Figure 2 A cross-sectional view of an exhaust pressure relief valve device provided by an embodiment of the present invention;

[0024] Figure 3 A schematic diagram of the assembly of an exhaust pressure relief valve device provided by an embodiment of the present invention;

[0025] Figure 4 A schematic diagram of the structure of the pressure relief component of the exhaust pressure relief valve device provided by the embodiment of the present invention when the pressure relief component has the maximum ventilation area;

[0026] Figure 5 yes Figure 4 Sectional view in the AA direction;

[0027] Figure 6 A schematic diagram of the structure of a pressure relief component of an exhaust pressure relief valve device provided by an embodiment of the present invention when the pressure relief component has a minimum ventilation area;

[0028] Figure 7 yes Figure 6 Cross-sectional view in the BB direction;

[0029] Figure 8 A schematic structural diagram of a valve seat of an exhaust pressure relief valve device provided in an embodiment of the present invention;

[0030] Fig. 9 A schematic structural diagram of a valve seat of an exhaust pressure relief valve device provided by an embodiment of the present invention from another angle;

[0031] Fig.10 A schematic structural diagram of a valve cover of an exhaust pressure relief valve device provided by an embodiment of the present invention;

[0032] Fig.11 A schematic structural diagram of a valve cover of an exhaust pressure relief valve device provided by an embodiment of the present invention from another angle;

[0033] Fig.12 A schematic structural diagram of an adjustment plate of an exhaust pressure relief valve device provided in an embodiment of the present invention;

[0034] Fig.13 A schematic structural diagram of another angle of the adjustment plate of the exhaust pressure relief valve device provided by an embodiment of the present invention;

[0035] Fig.14 A front view of a gasket of an exhaust pressure relief valve device provided by an embodiment of the present invention;

[0036] Fig.15 A top view of a gasket of an exhaust pressure relief valve device provided in an embodiment of the present invention.

[0037] Description of reference numerals:

[0038] 1. Shell; 11. Air inlet; 12. Exhaust port; 13. Upper shell; 14. Lower shell; 2. Pressure relief assembly; 21. Main body; 211. Ventilation slot; 212. Limit plate; 213. Guide rod; 2131. Guide slot; 21311. First slot; 21312. Second slot; 214. Pad; 215. Air inlet space; 216. Air outlet; 217. Valve seat; 2171. Seat body; 2172. Connecting tube; 2173. Connecting hole; 218. Valve cover; 2181. Connecting rod; 22. Adjusting plate; 221. Slide plate; 2211. Guide hole; 2212. Guide slider; 2213. Guide sleeve; 222. Baffle; 223. Notch; 23. Spring; 24. Gasket; 241. Raised portion. DETAILED DESCRIPTION

[0039] The present invention will be described in detail below with reference to the accompanying drawings and in conjunction with embodiments. Each example is provided by way of explanation of the present invention and does not limit the present invention. In fact, it will be clear to those skilled in the art that modifications and variations may be made in the present invention without departing from the scope or spirit of the present invention. For example, a feature shown or described as a part of one embodiment may be used in another embodiment to produce yet another embodiment. Therefore, it is desired that the present invention encompasses such modifications and variations within the scope of the appended claims and their equivalents.

[0040] In the description of the present invention, "first", "second" and similar words do not indicate any order, quantity or importance, but are only used to distinguish different components. "Include" or "comprising" and similar words mean that the elements or objects appearing before the word include the elements or objects listed after the word and their equivalents, but do not exclude other elements or objects. The directions or positional relationships indicated by the terms "longitudinal", "transverse", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom" and the like are based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and do not require that the present invention must be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the present invention. The terms "connected", "connected" and "set" used in the present invention should be understood in a broad sense. For example, they can be fixedly connected or detachably connected; they can be directly connected or indirectly connected through an intermediate component; they can be wired electrical connections, radio connections, or wireless communication signal connections. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0041] like Figure 1-Figure 3 As shown, an embodiment of the present invention provides an exhaust pressure relief valve device, including a housing 1 and a pressure relief assembly 2 disposed in the housing 1. For the sake of clarity, the definition Figure 2The upper part is the upper part, and the lower part is the lower part. The shell 1 is provided with an air inlet 11 and an exhaust port 12, the air inlet 11 is used to be connected to the chamber of the cooking device through an air inlet pipeline, and the exhaust port 12 is used to be connected to the exhaust outlet of the cooking device through an exhaust pipeline. The pressure relief assembly 2 includes a main body 21 and an adjustment plate 22 arranged in the main body. The main body 21 is cylindrical, for example, cylindrical. The top end of the main body 21 is closed, the bottom end of the main body 21 is connected to the air inlet 11, and the top of the side wall of the main body 21 is provided with a ventilation slot 211. A limit plate 212 is extended inwardly from the inner wall of the bottom end of the main body 21, and a guide rod 213 is extended downward from the top end of the main body 21. As shown Fig.12 , Fig.13 As shown, the adjustment plate 22 includes a slide plate 221 corresponding to the cross section of the body 21, and a baffle plate 222 corresponding to the shape of the vent slot 211 is extended upward from the edge of the slide plate 221, and a notch 223 is also provided on the edge of the slide plate 221. A guide hole 2211 is provided in the middle of the slide plate 221, and the slide plate 221 is sleeved on the outer periphery of the guide rod 213 through the guide hole 2211, and slides between a first position and a second position. The first position is the lowest position of the slide plate 221, and the second position is the highest position of the slide plate 221. A spring 23 is provided between the slide plate 221 and the top of the body 21, so that the slide plate 221 is against the limit plate 212 when in the first position. When the slide plate 221 slides upward from the first position to the second position, the area of ​​the vent slot 211 blocked by the baffle plate 222 gradually increases.

[0042] When the exhaust pressure relief valve device provided by the embodiment of the present invention is in use, the air inlet 11 is connected to the chamber of the cooking device through an air inlet pipeline, and the exhaust port 12 is connected to the exhaust outlet of the cooking device through an exhaust pipeline. The pressure P1 generated by the spring 23 acting on the slide plate 221 of the adjustment plate 22 is in opposition to the air pressure P2 in the chamber of the cooking device (the air pressure in the air inlet pipeline is also regarded as P2). When (P2>P1+atmospheric pressure+pressure generated by the gravity of the adjustment plate), the adjustment plate 22 rises, the ventilation area decreases, the spring 23 is compressed, and the spring pressure on the adjustment plate 22 increases. Conversely, the adjustment plate 22 descends to the lowest point on the limit plate 212, the ventilation area increases, and the spring pressure on the adjustment plate 22 decreases. Specifically, if Figure 4 , Figure 5As shown, when the pressure in the chamber of the cooking device is equal to or slightly higher than the atmospheric pressure, the slide plate 221 of the adjustment plate 22 contacts or approaches the limit plate 212. At this time, the baffle 222 of the adjustment plate 22 does not completely block or slightly blocks the vent slot 211. For example, the baffle 222 is completely or partially located below the vent slot 211. At this time, the gas in the chamber of the cooking device enters the bottom end of the main body 21 through the air inlet 11 through the air inlet duct, and flows from the notch 223 on the edge of the slide plate 221 to the inside of the adjustment plate 22, and flows from the vent slot 211 of the main body 21 into the shell 1, and finally flows out from the exhaust port 12 of the shell 1, and is discharged from the exhaust duct to the outside of the cooking device. When the adjustment plate 22 is located in the first position, the baffle 222 does not completely block the vent slot 211, and the ventilation area of ​​the pressure relief assembly 2 is the largest. As shown Figure 6 , Figure 7 As shown, when the pressure in the chamber of the cooking device is relatively higher or much higher than the atmospheric pressure, the regulating plate 22 is acted upon by the gas pressure and slides upward along the guide rod 213. Finally, after the gas pressure is balanced, the slide plate 221 of the regulating plate 22 is close to or very close to the top of the body 21. At this time, the baffle 222 of the regulating plate 22 covers part or most of the area of ​​the ventilation slot 211. At this time, the gas in the chamber of the cooking device enters the bottom of the body 21 through the air inlet 11 through the air inlet duct, flows into the inside of the regulating plate 22 from the notch 223 at the edge of the slide plate 221, and flows into the inside of the housing 1 from the ventilation slot 211 of the body 21, and finally flows out from the exhaust port 12 of the housing, and is discharged to the outside of the cooking device from the exhaust duct. When the adjustment plate 22 is in the second position, the baffle 222 blocks most of the area of ​​the ventilation slot 211, and the ventilation area of ​​the pressure relief assembly 2 is the smallest. The high-pressure gas in the chamber of the cooking device will quickly flow out from the smallest ventilation area, and the cross-sectional area of ​​the space from the top of the main body 21 to the exhaust port 12 is larger than the cross-sectional area of ​​the air inlet 11, which can absorb the kinetic energy of the high-speed airflow, so that the gas pressure and flow rate at the exhaust port 12 increase in a slower form, avoiding the problem of residual water or oil splashing out due to the sudden increase in air pressure at the end of the exhaust pipeline (the exhaust outlet of the cooking device), for example: the chamber of the integrated stove or steam-bake device is suddenly closed, causing the condensed water and oil accumulated at the exhaust outlet to suddenly splash out. At the same time, it can solve the problem of large pressure attenuation in the chamber when the steaming module of the integrated stove or steam-bake device is running for cooking. As the air pressure in the space from the top of the main body 21 to the exhaust port 12 increases (basically equal to the pressure in the exhaust pipe), the adjustment plate 22 gradually descends toward the first position, and the ventilation area of ​​the pressure relief assembly 2 gradually increases, thereby making the exhaust smoother and stabilizing the air pressure in the exhaust pipe. This can solve the problem of additional noise caused by uneven air pressure vibration in the exhaust pipe due to abnormal operation of the fan in the exhaust system of the integrated stove or range hood.

[0043] like Figure 2 , Figure 4 , Figure 6 , Figure 8 , Fig. 9 As shown, in order to ensure that the pressure relief assembly 2 has at least a certain ventilation area, ensure the smooth flow of gas, and prevent the pressure relief assembly 2 from completely blocking the body 21, in one embodiment of the present invention, a cushion block 214 is provided on the limit plate 212, so that the slide plate 221 contacts the cushion block 214 when it is located at the first position, and an air intake space 215 is formed between the slide plate 221 and the limit plate 212, and an air outlet 216 is provided on the side wall of the air intake space 215. The air intake space 215 can ensure that the pressure relief assembly 2 has at least a certain ventilation area, and the gas from the gas in the chamber of the cooking device enters the bottom end of the body 21 through the air intake 11 through the air intake pipe. Even if the regulating plate 22 completely blocks the body 21, the gas can enter the shell 1 from the air intake space 215 and the air outlet 216, and then flow out from the exhaust port 12 of the shell 1, and be discharged to the outside of the cooking device from the exhaust pipe. In addition, the cooperation between the cushion block 214 and the air outlet 216 can also return condensed water.

[0044] like Figure 2 , Figure 4 , Figure 6 , Fig.10 , Fig.11 As shown, in order to prevent the adjustment plate 22 from rotating when sliding on the guide rod 213, thereby preventing the sealing of the venting slot 211 from failing, in one embodiment of the present invention, an S-shaped guide groove 2131 is provided on the outer periphery of the guide rod 213, and the guide groove 2131 extends along the axial direction of the guide rod 213. Fig.12 , Fig.13 As shown, the inner wall of the guide hole 2211 is provided with a guide slider 2212, and the guide slider 2212 is located in the guide groove 2121. In this embodiment, the guide groove 2131 can make the adjustment plate 22 rotate at a predetermined angle. When the slide plate 221 is located at the first position, the baffle 222 and the ventilation slot 211 are staggered to ensure the maximum ventilation area; when the slide plate 221 slides upward from the first position to the second position, under the action of the guide groove 2131 and the guide slider 2212, the adjustment plate 22 drives the baffle 222 to rotate. During the rotation process, the baffle 222 gradually blocks the ventilation slot 211 to reduce the ventilation area. Due to the limitation of the guide groove 2131, the movement trajectory of the baffle 222 can be accurate to avoid accidental rotation.

[0045] like Fig.10 , Fig.11As shown, in order to make the adjustment plate 22 more stable when rotating and sliding, in a preferred embodiment of the present invention, the number of the guide grooves 2131 is two, symmetrically arranged on both sides of the guide rod 213; correspondingly, the number of the guide sliders 2212 is also two, respectively located on the inner walls of both sides of the guide hole 2211. Further, in order to make the slide plate 221 more stable when sliding, a cylindrical guide sleeve 2213 is extended upward from the outer circumference of the guide hole 2211, and the inner diameter of the guide sleeve 2213 corresponds to the outer diameter of the guide rod 213.

[0046] like Figure 8-Figure 11 As shown, in one embodiment of the present invention, the number of the vent slots 211 is 4, evenly distributed on the periphery of the body 21. Correspondingly, the number of the baffles 222 is also 4, evenly distributed on the periphery of the slide plate 221, and the notch 223 is located between two adjacent baffles 222. Of course, the number of the vent slots 211 and the baffles 222 can also be other values, without limitation.

[0047] like Fig.10 , Fig.11 As shown, in one embodiment of the present invention, the guide groove 2131 includes two vertical first grooves 21311 and a second groove 21312 between the two first grooves 21311, the first groove 21311 extends axially along the guide rod 213, and the axes of the two first grooves 21311 do not overlap, but are staggered by a certain distance. In addition, the heights of the two first grooves 21311 are also different. The second groove 21312 is C-shaped, and the two ends are respectively connected to the two first grooves 21311. In this embodiment, the rotation angle of the baffle 222 needs to be (360°÷8=)45°, that is, the rotation angle range of the adjustment plate 22 is within the interval [0°, 45°]. Therefore, the staggered angle of the two first grooves 21311 of the guide groove 2131 is 45°, and the intersection positions of the first groove 21311 and the second groove 21312 correspond to the maximum and minimum ventilation areas respectively.

[0048] In order to make the force of the spring 23 on the adjustment plate 22 more uniform and ensure the stability of the adjustment plate 22 when sliding, Figure 2 , Figure 4 , Figure 6 As shown, in one embodiment of the present invention, the bottom end of the spring 23 is provided with an annular gasket 24, and the gasket 24 abuts against the slide plate 221. Preferably, the bottom end of the gasket 24 is provided with a protrusion 241 to reduce the dynamic friction between the slide plate 221 and the gasket 24 during relative rotation. Preferably, the gasket 24 is a graphite gasket. Since graphite has a lubricating effect, the friction coefficient between the two is small, and in addition to point contact, the graphite gasket can reduce the friction force suffered by the adjustment plate 22 during movement.

[0049] In addition, different spring coefficients of the spring 23 are required in different application scenarios, and the specific needs are adjusted according to actual conditions. For example, when the exhaust pressure relief valve device is used in an exhaust system that needs to exhaust steam, the spring 23 needs to overcome the resistance caused by the surface tension of water between the adjustment plate 22 and the body 21 and the resistance caused by other factors when rebounding.

[0050] In order to facilitate the assembly of the pressure relief assembly 2, as Figure 2 , Figure 3 , Figure 8-Figure 11 As shown, in one embodiment of the present invention, the body 21 includes a valve seat 217 and a valve cover 218. The valve seat 217 includes a cylindrical seat body 2171, the inner wall of one end of the seat body 2171 is provided with the stop plate 212, and the other end of the seat body 2171 is detachably connected to the valve cover 218. The guide rod 213 is fixedly connected to the bottom of the valve cover 218. Further, the bottom of the seat body 2171 of the valve seat 217 is provided with a connecting cylinder 2172 extending downward, and the outer wall of the connecting cylinder 2172 is connected to the inner wall of the air inlet 11 by threads. In order to realize the detachable connection between the seat body 2171 and the valve cover 218, in one embodiment of the present invention, vertical connecting rods 2181 are provided at both ends of the valve cover 218, and connecting holes 2173 corresponding to the connecting rods 2181 are provided at both ends of the valve seat 217. The connecting rod 2181 and the connecting hole 2173 can be connected by snap-fit ​​or thread.

[0051] In order to facilitate the assembly of the exhaust slow pressure valve device, Figure 1 , Figure 2 , Figure 3 As shown, the housing 1 comprises an upper shell 13 and a lower shell 14, wherein the bottom of the upper shell 13 and the top of the lower shell 14 are detachably connected, for example, by threaded connection. The air inlet 11 is arranged at the bottom of the lower shell 14, and the air outlet 12 is arranged at the top of the upper shell 13.

[0052] The present invention also provides a cooking device, comprising the exhaust pressure relief valve device. Specifically, the cooking device comprises a chamber for cooking, the air inlet of the exhaust pressure relief valve device is connected to the chamber of the cooking device via the air inlet pipeline, and the exhaust port is connected to the exhaust outlet of the cooking device via the exhaust pipeline.

[0053] The cooking device provided by the embodiment of the present invention is provided with the above-mentioned exhaust pressure relief valve device, which can dynamically adjust the air pressure of the exhaust port 12 according to the air pressure fluctuation of the air inlet 11 of the exhaust pressure relief valve device, so that the air pressure of the exhaust port 12 will not change rapidly with the sudden change of the air pressure in the chamber of the cooking device. The method of adjusting the air pressure by the exhaust pressure relief valve device is to slow down the speed of exhausting excess gas from the chamber to adjust the air pressure and gas flow rate of the exhaust port 12. The main implementation method is to automatically change the air outlet area of ​​the pressure relief component 2 according to the air pressure of the air inlet 11. When the air pressure suddenly increases, the adjustment plate 22 of the pressure relief component 2 will automatically rise and move, and the baffle 222 and the ventilation slot 211 of the body 21 work together to reduce the ventilation area of ​​the pressure relief component 2. And as the air pressure in the space from the top of the body 21 to the exhaust port 12 (basically equal to the pressure in the exhaust pipeline) increases, the adjustment plate 22 gradually descends toward the first position, and the ventilation area of ​​the pressure relief component 2 gradually increases, so that the exhaust is smoother. Therefore, the cooking equipment using the exhaust pressure-relief valve device can make the airflow in the entire exhaust duct and the exhaust outlet change relatively stable and smooth, reduce the generation of unnecessary noise, avoid the rapid decay of air pressure in the chamber, and prevent condensed water or other substances at the exhaust outlet from splashing out.

[0054] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An exhaust slow-pressure valve device, characterized in that: It comprises a shell (1) and a pressure relief assembly (2) arranged in the shell (1); the shell (1) is provided with an air inlet (11) and an air outlet (12); The pressure relief assembly (2) comprises a body (21) and an adjustment plate (22) arranged in the body (21); the body (21) is cylindrical, the top end of the body (21) is closed, the bottom end of the body (21) is connected to the air inlet (11), and the top of the side wall of the body (21) is provided with a venting slot (211); the inner wall of the bottom end of the body (21) extends inwardly to provide a limit plate (212), and the top end of the body (21) extends downward to provide a guide rod (213); the adjustment plate (22) comprises a slide plate (221) corresponding to the cross section of the body (21), and the edge of the slide plate (221) extends upward to provide a shape corresponding to the venting slot (211). A baffle (222) is provided corresponding to the slide plate (221); a notch (223) is also provided on the edge of the slide plate (221); a guide hole (2211) is provided in the middle of the slide plate (221); the slide plate (221) is sleeved on the outer periphery of the guide rod (213) through the guide hole (2211) and slides between a first position and a second position; a spring (23) is provided between the slide plate (221) and the top of the body (21) so that the slide plate (221) is against the limit plate (212) when in the first position; when the slide plate (221) slides upward from the first position to the second position, the area of ​​the ventilation slot (211) blocked by the baffle (222) gradually increases.

2. The exhaust slow pressure valve device according to claim 1, characterized in that: A cushion block (214) is provided on the limiting plate (212), so that the sliding plate (221) contacts the cushion block (214) when it is located at the first position, and an air intake space (215) is formed between the sliding plate (221) and the limiting plate (212), and an air outlet hole (216) is provided on a side wall of the air intake space (215).

3. The exhaust slow pressure valve device according to claim 1 or 2, characterized in that: An S-shaped guide groove (2131) is provided on the outer periphery of the guide rod (213), and the guide groove (2131) extends along the axial direction of the guide rod (213); a guide slider (2212) is provided on the inner wall of the guide hole (2211), and the guide slider (2212) is located in the guide groove (2131); when the slide plate (221) is located at the first position, the baffle plate (222) and the ventilation slot (211) are arranged in a staggered manner.

4. The exhaust slow pressure valve device according to claim 3, characterized in that: There are two guide grooves (2131) symmetrically arranged on both sides of the guide rod (213); there are also two guide sliders (2212) respectively located on the inner walls on both sides of the guide hole (2211).

5. The exhaust slow pressure valve device according to claim 3, characterized in that: A cylindrical guide sleeve (2213) is provided on the outer circumference of the guide hole (2211) extending upward, and the inner diameter of the guide sleeve (2213) corresponds to the outer diameter of the guide rod (213).

6. The exhaust slow pressure valve device according to claim 3, characterized in that: An annular gasket (24) is provided at the bottom end of the spring (23), and a protrusion (241) is provided at the bottom end of the gasket (24).

7. The exhaust slow pressure valve device according to claim 1, characterized in that: The body (21) comprises a valve seat (217) and a valve cover (218); the valve seat (217) comprises a cylindrical seat body (2171); the inner wall of one end of the seat body (2171) is provided with the limiting plate (212); the other end of the seat body (2171) is detachably connected to the valve cover (218); the guide rod (213) is fixedly connected to the bottom of the valve cover (218); And / or, the shell (1) comprises an upper shell (13) and a lower shell (14), the bottom of the upper shell (13) and the top of the lower shell (14) being detachably connected; the air inlet (11) is arranged at the bottom of the lower shell (14), and the air outlet (12) is arranged at the top of the upper shell (13).

8. The exhaust slow pressure valve device according to claim 7, characterized in that: The two ends of the valve cover (218) are provided with vertical connecting rods (2181), and the two ends of the valve seat (217) are provided with connecting holes (2173) corresponding to the connecting rods (2181).

9. The exhaust slow-pressure valve device according to claim 7, characterized in that: A connecting tube (2172) extending downward is provided at the bottom of the valve seat (217), and the outer wall of the connecting tube (2172) is connected to the inner wall of the air inlet (11) via threads.

10. A cooking device, characterized in that: The invention comprises an exhaust slow-pressure valve device according to any one of claims 1 to 9.

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