Steam oven and its sensing and detecting device

Abstract

The present invention relates to a steam oven and its sensing and detecting device. A sensing and detecting device includes: a box body disposed outside the box of the steam oven; the box body has an inner cavity, the box body is provided with a receiving cavity, a plurality of through holes are formed in the cavity wall of the receiving cavity, and the receiving cavity is communicated with the inner cavity through the through holes; a sensor disposed in the receiving cavity and used for detecting odors; and a closing plate movably disposed in the receiving cavity to open and cover the through holes. A steam oven includes: a box body having an inner cavity; the above-mentioned sensing and detecting device disposed outside the box body, and the receiving cavity is communicated with the inner cavity through the through holes. In the above-mentioned steam oven and its sensing and detecting device, when detection is required, the closing plate is opened to expose the through holes, the air flow in the inner cavity of the box body flows into the receiving cavity through the through holes, and is detected by the sensor in the receiving cavity; when detection is not required, the sensor is protected in the sealed space formed by the box body and the closing plate, which is beneficial to protecting the sensor and extending the service life of the sensor.

Description

Technical Field

[0001] The present invention relates to the technical field of steam ovens, and particularly to a steam oven and its sensing and detecting device. Background Art

[0002] During the process of steaming and baking food materials in a steam oven, the food materials will generate volatile gases. Most steam ovens are provided with sensors inside the oven cavity to detect the volatile gases, so as to quickly know the types and maturity of the food materials in the oven cavity, and then match and switch to a suitable steaming and baking heating mode. Due to the influence of water vapor and other interfering gases generated in the oven cavity during the steaming and baking process, the accuracy of the sensors in the oven cavity is likely to decrease and the service life is shortened. Summary of the Invention

[0003] Based on this, in view of the problem that the accuracy of the sensors in the oven cavity is easily affected by water vapor and interfering gases in the oven cavity, it is necessary to provide a steam oven and its sensing and detecting device.

[0004] A sensing and detecting device for a steam oven includes:

[0005] A box body, which is arranged outside the oven cavity of the steam oven; the box body has an inner cavity, and the box body is provided with a containing cavity. A plurality of through holes are opened on the cavity wall of the containing cavity, and the containing cavity is communicated with the inner cavity through the through holes;

[0006] A sensor, which is arranged in the containing cavity and is used for detecting odors; and

[0007] A closing plate, which is movably arranged in the containing cavity to open and cover the through holes.

[0008] For the above-mentioned sensing and detecting device of the steam oven, when detection is required, the closing plate is opened to expose the through holes, and the air flow in the inner cavity of the box body flows into the containing cavity through the through holes and is detected by the sensor in the containing cavity; when detection is not required, the closing plate covers the through holes, and the air flow in the inner cavity of the box body cannot flow into the containing cavity through the through holes, and the sensor is protected in the sealed space formed by the box body and the closing plate, effectively preventing the water vapor in the inner cavity of the box body from having an adverse effect on the sensor, which is beneficial to protecting the sensor and prolonging the service life of the sensor.

[0009] In one embodiment, the closing plate is rotatably connected to the box body, and the closing plate rotates relative to the box body to open or cover the through holes.

[0010] In one embodiment, the closing plate is connected to the box body through a horizontal rotating shaft and can flip relative to the box body towards the inside of the containing cavity with the horizontal rotating shaft as the axis.

[0011] In one embodiment, the closing plate is connected to the box body through a vertical rotating shaft and can rotate horizontally relative to the box body with the vertical rotating shaft as the axis.

[0012] In one embodiment, it further includes an air inlet pipe and an air extraction pipe that are spaced apart and arranged on the top side of the box body. The air inlet pipe is provided with an air inlet channel, and the air extraction pipe is provided with the air extraction channel. The air inlet channel and the air extraction channel communicate with the accommodation cavity.

[0013] When the air extraction channel is closed and the air inlet channel is opened, external gas is injected into the accommodation cavity through the air inlet channel, and the closing plate rotates to cover the through hole; when the air extraction channel is opened and the air inlet channel is closed, air is extracted at the air extraction channel, and the closing plate rotates to open the through hole.

[0014] In one embodiment, it further includes a first control valve and a second control valve. The first control valve is arranged on the air inlet pipe and is used to open and close the air inlet channel, and the second control valve is arranged on the air extraction pipe and is used to open and close the air extraction channel.

[0015] In one embodiment, the external gas is an inert gas.

[0016] In one embodiment, the number of the sensors is multiple, and each of the sensor arrays is arranged on the top side of the accommodation cavity.

[0017] In one embodiment, it further includes a fixing seat. The fixing seat is fixed on the cavity wall of the accommodation cavity, and each of the sensor arrays is arranged on the fixing seat.

[0018] A steam oven, comprising:

[0019] A box body having an inner cavity;

[0020] The above-mentioned sensing and detecting device is arranged outside the box body, and the accommodation cavity communicates with the inner cavity through the through hole.

[0021] The above-mentioned steam oven can effectively prevent the water vapor in the inner cavity of the box body from having an adverse effect on the sensor, which is beneficial to protecting the sensor and prolonging the service life of the sensor. Description of the Drawings

[0022] Figure 1 It is a schematic diagram of a steam oven in one embodiment;

[0023] Figure 2 For Figure 1 A schematic diagram when the closing plate of the sensing and detecting device of the shown steam oven is opened;

[0024] Figure 3 For Figure 1Schematic diagram when the closing plate of the sensing detection device of the steam oven shown is closed.

[0025] Reference numerals:

[0026] 10. Sensing detection device of the steam oven; 20. Box body; 21. Inner cavity; 100. Box body; 101. Accommodation cavity; 102. Through hole; 200. Sensor; 300. Closing plate; 400. Air inlet channel; 401. Air inlet pipe; 402. First control valve; 500. Air extraction channel; 501. Air extraction pipe; 502. Second control valve. Detailed implementation manners

[0027] In order to make the above objects, features, and advantages of the present invention more obvious and understandable, the following will describe the detailed implementation manners of the present invention with reference to the accompanying drawings. Many specific details are set forth in the following description in order to fully understand the present invention. However, the present invention can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the connotation of the present invention. Therefore, the present invention is not limited by the specific embodiments disclosed below.

[0028] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention.

[0029] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise specifically defined.

[0030] In the present invention, unless otherwise clearly specified or limited, terms such as "installed", "connected", "joined", "fixed", etc. shall be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the internal communication of two components or the interaction relationship between two components, unless otherwise clearly limited. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0031] In the present invention, unless otherwise clearly specified or limited, the first feature being "on" or "under" the second feature may be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature may be that the first feature is directly above or obliquely above the second feature, or merely indicates that the first feature has a higher horizontal height than the second feature. The first feature being "under", "beneath" and "underneath" the second feature may be that the first feature is directly below or obliquely below the second feature, or merely indicates that the first feature has a lower horizontal height than the second feature.

[0032] It should be noted that when an element is referred to as "fixed to" or "disposed on" another element, it can be directly on the other element or there may also be an intermediate element. When an element is considered to be "connected" to another element, it can be directly connected to the other element or there may be an intermediate element at the same time. The terms "vertical", "horizontal", "up", "down", "left", "right" and similar expressions used herein are only for the purpose of illustration and do not represent the only implementation.

[0033] Please refer to Figure 1 and Figure 2 , in one embodiment, the sensing and detecting device 10 of the steam oven includes a box body 100, a sensor 200 and a closing plate 300. The box body 100 is disposed outside the box body 20 of the steam oven. An accommodating cavity 101 is provided inside the box body 100, and the sensor 200 is disposed in the accommodating cavity 101.

[0034] Wherein, the box body 20 has an inner cavity 21. A plurality of through holes 102 are formed in the cavity wall of the accommodating cavity 101, and the accommodating cavity 101 communicates with the inner cavity 21 through the through holes 102. The closing plate 300 is movably disposed in the accommodating cavity 101 to open and close the through holes 102.

[0035] It should be noted that during the process of steaming and baking ingredients in the steam oven, the ingredients will generate volatile gases. Most steam ovens are equipped with sensors 200 in the cabinet 20 to detect the volatile gases, so as to quickly know the types and degrees of ripeness of the ingredients in the cabinet 20 of the steam oven, and then match and switch to the appropriate steaming and baking heating mode. Due to the influence of water vapor and other interfering gases generated in the cabinet 20 during the steaming and baking process, the accuracy of the sensor 200 in the cabinet 20 is likely to decrease and its service life is shortened.

[0036] With the above settings, as Figure 2 shown, when detection is required, the closing plate 300 is opened to expose the through hole 102, and the air flow in the inner cavity 21 of the cabinet 20 flows into the accommodating cavity 101 through the through hole 102 and is detected by the sensor 200 in the accommodating cavity 101; as Figure 3 shown, when detection is not required, the closing plate 300 covers the through hole 102, and the air flow in the inner cavity 21 of the cabinet 20 cannot flow into the accommodating cavity 101 through the through hole 102. The sensor 200 is protected in the sealed space formed by the box body 100 and the closing plate 300, effectively preventing the water vapor in the inner cavity 21 of the cabinet 20 from having an adverse effect on the sensor 200, which is beneficial to protecting the sensor 200 and extending its service life.

[0037] As Figure 2 shown, the closing plate 300 is rotatably connected to the box body 100, and the closing plate 300 rotates relative to the box body 100 to open or cover the through hole 102.

[0038] With this setting, rotating the closing plate 300 can open or cover the through hole 102, which is convenient to operate and easy for users to use, and the structural design is simple and reasonable.

[0039] Specifically, in an embodiment, please refer to Figure 2 , the closing plate 300 is connected to the box body 100 through a horizontal rotating shaft, and the closing plate 300 can be turned over relative to the box body 100 towards the inside of the accommodating cavity 101 with the horizontal rotating shaft as the axis.

[0040] It should be noted that turning over towards the inside of the accommodating cavity 101 means turning upwards.

[0041] In this embodiment, when detection is required, the closing plate 300 is flipped upward to expose the through hole 102, and the air flow in the inner cavity 21 of the box body 20 flows into the accommodating cavity 101 through the through hole 102 and is detected by the sensor 200 in the accommodating cavity 101; when detection is not required, the closing plate 300 is flipped downward to cover the through hole 102, and the air flow in the inner cavity 21 of the box body 20 cannot flow into the accommodating cavity 101 through the through hole 102. The sensor 200 is protected in the sealed space formed by the box body 100 and the closing plate 300, effectively preventing the water vapor in the inner cavity 21 of the box body 20 from having an adverse effect on the sensor 200, which is beneficial to protecting the sensor 200 and extending the service life of the sensor 200.

[0042] Specifically, in another embodiment, please refer to Figure 2 , the closing plate 300 is connected to the box body 100 through a vertical rotating shaft, and the closing plate 300 can rotate horizontally relative to the box body 100 with the vertical rotating shaft as the axis.

[0043] In this embodiment, when detection is required, the closing plate 300 is rotated horizontally to expose the through hole 102, and the air flow in the inner cavity 21 of the box body 20 flows into the accommodating cavity 101 through the through hole 102 and is detected by the sensor 200 in the accommodating cavity 101; when detection is not required, the closing plate 300 is rotated horizontally again to cover the through hole 102, and the air flow in the inner cavity 21 of the box body 20 cannot flow into the accommodating cavity 101 through the through hole 102. The sensor 200 is protected in the sealed space formed by the box body 100 and the closing plate 300, effectively preventing the water vapor in the inner cavity 21 of the box body 20 from having an adverse effect on the sensor 200, which is beneficial to protecting the sensor 200 and extending the service life of the sensor 200.

[0044] In Figure 2 other embodiments not shown, the closing plate 300 can also be connected to the box body 100 through a ball hinge, and the closing plate 300 can rotate relative to the box body 100 with the ball hinge as the center.

[0045] In the above embodiment, please refer to Figure 2 , the through hole 102 is circular, and the closing plate 300 is also circular, and the area of the closing plate 300 is larger than the area of the through hole 102, so that the closing plate 300 can at least completely cover the through hole 102. In other embodiments, the through hole 102 can also be rectangular or other shapes, and the closing plate 300 can also be other shapes, as long as the area of the closing plate 300 meets the requirement of at least covering the through hole 102.

[0046] In the above embodiment, please refer to Figure 2 , a plurality of through holes 102 are arranged at intervals in a rectangular array. In other embodiments, a plurality of through holes 102 can also be arranged at intervals in a circular array or other array manners.

[0047] Since the air flow temperature in the inner cavity 21 of the box body 20 is relatively high after using the steam oven to steam and roast food materials, to avoid scalding when manually rotating the closing plate 300, the closing plate 300 can be driven to rotate relative to the box body 100 by controlling the air flow, so as to open or cover the through hole 102.

[0048] Based on the above considerations, in the embodiment as Figure 2 shown, the sensing and detecting device 10 of the steam oven further includes an air inlet channel 400 and an air extraction channel 500 that communicate with the accommodation cavity 101.

[0049] In this embodiment, as Figure 3 shown by the arrow, when the air extraction channel 500 is closed and the air inlet channel 400 is open, external gas is injected into the accommodation cavity 101 through the air inlet channel 400, and the closing plate 300 rotates to cover the through hole 102; as Figure 2 shown by the arrow, when the air extraction channel 500 is open and the air inlet channel 400 is closed, air is extracted at the air extraction channel 500, and the closing plate 300 rotates to open the through hole 102.

[0050] It should be noted here that the external gas is an inert gas, such as nitrogen. When the air extraction channel 500 is closed and the air inlet channel 400 is open, injecting external gas into the accommodation cavity 101 through the air inlet channel 400 can cause the closing plate 300 to rotate to cover the through hole 102, and at the same time exhaust the air in the accommodation cavity 101 to prevent the oxygen in the air from oxidizing the sensor 200.

[0051] Among them, different types of sensors 200 need to be injected with different types of inert gases, and the type of inert gas is determined according to the type of the sensor 200. The injection amount of the inert gas can be determined by a preset injection time or a preset injection amount. The preset injection time is calculated based on the gas flow rate of the inert gas and the volume of the cavity, and the preset injection amount is obtained by detecting the content or concentration of the protective gas in the accommodation cavity 101 by an external detection device.

[0052] As Figure 2 shown in the embodiment, the sensing and detecting device 10 of the steam oven includes an air inlet pipe 401 and an air extraction pipe 501, and the air inlet pipe 401 and the air extraction pipe 501 are arranged at intervals on the top side of the box body 100.

[0053] In this embodiment, as Figure 2 shown, the air inlet channel 400 is opened in the air inlet pipe 401, and the air extraction channel 500 is opened in the air extraction pipe 501. Both the air inlet pipe 401 and the air extraction pipe 501 are hollow. One open end of the air inlet pipe 401 is connected to the top side of the box body 100, and the other open end of the air inlet pipe 401 is used to connect to an external gas charging device. One open end of the air extraction pipe 501 is connected to the top side of the box body 100, and the other open end of the air extraction pipe 501 is used to connect to an external air extraction device.

[0054] In this embodiment, as Figure 2 shown, the intake pipe 401 and the box body 100 are fixedly connected by riveting, and the exhaust pipe and the box body 100 are fixedly connected by riveting. In other embodiments, the intake pipe 401 and the exhaust pipe can also be detachably connected to the box body 100 by means such as plugging and clamping, so as to facilitate timely replacement of the intake pipe 401 and the exhaust pipe after damage, which is conducive to the reuse of resources.

[0055] In this embodiment, both the intake pipe 401 and the exhaust pipe are L-shaped. In other embodiments, the intake pipe 401 and the exhaust pipe can also be arc-shaped or other irregular shapes. Here, the shapes of the intake pipe 401 and the exhaust pipe are not limited.

[0056] As Figure 2 shown in the embodiment, the sensing and detecting device 10 of the steam oven further includes a first control valve 402 and a second control valve 502. The first control valve 402 is arranged on the intake pipe 401 and is used to open and close the intake passage 400, and the second control valve 502 is arranged on the exhaust pipe 501 and is used to open and close the exhaust passage 500.

[0057] In this embodiment, as Figure 3 shown, when the exhaust passage 500 is closed and the intake passage 400 is opened, the second control valve 502 needs to be closed and the first control valve 402 needs to be opened; as Figure 2 shown, when the exhaust passage 500 is opened and the intake passage 400 is closed, the second control valve 502 needs to be opened and the first control valve 402 needs to be closed.

[0058] In a specific embodiment, the first control valve 402 and the second control valve 502 can be mechanical valves or solenoid valves.

[0059] As Figure 2 and Figure 3 shown, the number of the sensors 200 is multiple, and each sensor 200 is arrayed on the top side of the accommodation cavity 101.

[0060] By arraying each sensor 200 according to a specific geometric distribution, the airflow flowing into the accommodation cavity 101 can be detected from multiple angles and directions, and the parameters at different angles and directions can be collected, which is conducive to improving the accuracy and reliability of the detection results.

[0061] In this embodiment, each sensor 200 is a gas sensor 200. In other embodiments, each sensor 200 can also be a combination of a gas sensor 200 and a humidity sensor 200, and the humidity can be detected while detecting the odor to assist in further judging the airflow flowing into the accommodation cavity 101.

[0062] As Figure 1As shown, the sensing and detecting device 10 of the steam oven further includes a fixing base (not shown in the figure). The fixing base is fixed to the cavity wall of the accommodating cavity 101, and the sensors 200 are arrayed on the fixing base.

[0063] In this embodiment, the fixing base is rectangular, and the sensors 200 are arranged in a rectangular array along the outer periphery of the fixing base. In other embodiments, the sensors 200 can also be arranged in a circular array or other array forms.

[0064] In this embodiment, the fixing base and the cavity wall of the accommodating cavity 101 are fixedly connected by riveting. In other embodiments, the fixing base and the cavity wall of the accommodating cavity 101 can also be detachably connected by screwing, clamping, etc., so as to replace the fixing base in time after damage and facilitate the recycling of resources.

[0065] As Figure 1 shown, the sensing and detecting device 10 of the steam oven further includes a controller (not shown in the figure). The controller is electrically connected to the blower, the first control valve 402, and the second control valve 502 in the steam oven.

[0066] When the steam oven starts to work (cooking food), the second control valve 502 is closed and the first control valve 402 is opened. The air extraction channel 500 is closed and the air intake channel 400 is opened. External gas is injected into the accommodating cavity 101 through the air intake channel 400. The closing plate 300 rotates to cover the through hole 102, and the air flow in the inner cavity 21 of the box body 20 cannot flow into the accommodating cavity 101 through the through hole 102. The sensor 200 is protected in the sealed space formed by the box body 100 and the closing plate 300, effectively preventing the water vapor in the inner cavity 21 of the box body 20 from having an adverse effect on the sensor 200;

[0067] As cooking progresses, under the influence of the blower inside the steam oven, the water vapor in the steam oven will decrease. When the water vapor content in the steam oven decreases, the second control valve 502 is opened and the first control valve 402 is closed. The air extraction channel 500 is opened and the air intake channel 400 is closed. Air is extracted at the air extraction channel 500. The closing plate 300 rotates to open the through hole 102, and the air flow in the inner cavity 21 of the box body 20 flows into the accommodating cavity 101 through the through hole 102 and is detected by the sensor 200 in the accommodating cavity 101;

[0068] When detection is not required or the steam oven is not used for a long time, the second control valve 502 is closed and the first control valve 402 is opened. The air extraction channel 500 is closed and the air intake channel 400 is opened. External gas is injected into the accommodating cavity 101 through the air intake channel 400. The closing plate 300 rotates to cover the through hole 102, and the air flow in the inner cavity 21 of the box body 20 cannot flow into the accommodating cavity 101 through the through hole 102. The sensor 200 is protected in the sealed space formed by the box body 100 and the closing plate 300.

[0069] The technical features of the above-described embodiments can be combined arbitrarily. For the sake of brevity of description, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as the scope recorded in this specification.

[0070] The above-described embodiments only express several implementation manners of the present invention. The description is relatively specific and detailed, but it should not be construed as a limitation on the scope of the invention patent. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several modifications and improvements can still be made, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the present invention patent shall be subject to the appended claims.

Claims

1. A sensing and detecting device for a steam oven, characterized in that, Comprising: A box body, disposed outside the box of the steam oven; the box has an inner cavity, the box body is provided with a containing cavity, and a plurality of through holes are formed in the cavity wall of the containing cavity, and the containing cavity communicates with the inner cavity through the through holes; A sensor, disposed in the containing cavity; and A closing plate, movably disposed in the containing cavity to open or cover the through holes; An air inlet pipe and an air extraction pipe spaced apart from the top side of the box body, the air inlet pipe is provided with an air inlet channel, the air extraction pipe is provided with an air extraction channel, and the air inlet channel and the air extraction channel communicate with the containing cavity; When the air extraction channel is closed and the air inlet channel is opened, external gas is injected into the containing cavity through the air inlet channel, and the closing plate rotates to cover the through holes; when the air extraction channel is opened and the air inlet channel is closed, air is extracted at the air extraction channel, and the closing plate rotates to open the through holes; The external gas is an inert gas. When the air extraction channel is closed and the air inlet channel is opened, external gas is injected into the containing cavity through the air inlet channel, which can cause the closing plate to rotate to cover the through holes, and at the same time exhaust all the air in the containing cavity to prevent the oxygen in the air from oxidizing the sensor.

2. The sensing and detecting device of the steam oven according to claim 1, characterized in that, The closing plate is rotatably connected to the box body, and the closing plate rotates relative to the box body to open or cover the through holes.

3. The sensing and detecting device of the steam oven according to claim 2, characterized in that, The closing plate is connected to the box body through a horizontal rotating shaft and can flip relative to the box body towards the inside of the containing cavity with the horizontal rotating shaft as the axis.

4. The sensing and detecting device of the steam oven according to claim 2, wherein The closing plate is connected to the box body through a vertical rotating shaft and can rotate horizontally relative to the box body with the vertical rotating shaft as the axis.

5. The sensing and detecting device of the steam oven according to claim 1, wherein It further includes a first control valve and a second control valve. The first control valve is disposed on the air inlet pipe and is used to open and close the air inlet channel, and the second control valve is disposed on the air extraction pipe and is used to open and close the air extraction channel.

6. The sensing and detecting device of the steam oven according to claim 1, characterized in that, The number of the sensors is multiple, and each of the sensors is arranged in an array on the top side of the containing cavity.

7. The sensing and detecting device of the steam oven according to claim 6, characterized in that, It further includes a fixing seat, the fixing seat is fixed to the cavity wall of the containing cavity, and each of the sensors is arranged in an array on the fixing seat.

8. A steam oven, characterized in that, Comprising: A box body, having an inner cavity; The sensing and detecting device according to any one of claims 1-7, disposed outside the box, and the containing cavity communicates with the inner cavity through the through holes.

Images