Oil smoke treatment device, smoke sensing device and protection assembly of smoke sensing device
By designing a protective cover on the outside of the smoke detection module, the problems of dust intrusion and external force damage are solved, and the smoke detection module is effectively protected, the service life is extended and the detection accuracy is improved.
Patent Information
- Application Number
- CN202421514847.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-28
- Publication Date
- 2025-05-06
- Estimated Expiration
- 2034-06-28
AI Technical Summary
Existing smoke detection modules are prone to malfunction due to dust ingress and are damaged by external forces during transportation and assembly.
A smoke protection cover is designed, which is arranged outside the smoke detection module to form a second smoke inlet and a second air inlet connected to it, ensuring that dust does not enter and avoiding damage from external forces.
It effectively prevents dust from entering, prolongs the service life of the smoke detection module, and protects it from damage during transportation and assembly, ensuring detection accuracy and reliability.
Smart Images
Figure CN222836953U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the technical field of kitchen appliances, and in particular to an oil fume treatment device, a smoke sensing device and a protective component thereof. Background Art
[0002] With the rapid development of electronic technology, household appliances have entered the era of intelligence, and range hood products are also becoming increasingly intelligent. For example, there are range hoods on the market that automatically adjust the operating state of the oil fume extraction according to the amount of oil fume caused by cooking. When there is less oil fume, the fan speed is automatically reduced to reduce noise; on the contrary, when there is more oil fume, the fan speed is automatically increased to exhaust the oil fume as soon as possible, and the whole process does not require user operation. To achieve this function, a smoke detection module needs to be installed on the range hood to detect the concentration of oil fume and feed the detected data back to the main control board, which analyzes the data and makes operating instructions for the range hood to realize automatic control of oil fume extraction. The smoke detection module in the related technology can be selected and arranged in various locations such as the oil net air inlet, the inside of the smoke hood, and the inside of the bellows according to actual needs. However, after a period of use, dust easily enters the inside of the smoke detection module, causing failures, and it is also easily damaged by external forces during transportation and assembly. Summary of the invention
[0003] The first technical problem solved by the present application is to provide a protective component for a smoke sensing device, which can effectively improve the protective performance of the oil smoke detection module, prevent malfunctions caused by the entry of dust, and prevent damage by external forces during transportation and assembly.
[0004] The second technical problem solved by the present application is to provide a smoke sensing device which can effectively improve the protection performance of the oil smoke detection module, prevent malfunctions caused by dust intrusion, and prevent damage by external forces during transportation and assembly.
[0005] The third technical problem solved by the present application is to provide an oil fume treatment device, which can effectively improve the protection performance of the oil fume detection module, prevent malfunctions caused by the entry of dust, and prevent damage by external forces during transportation and assembly.
[0006] The first technical problem mentioned above is solved by the following technical solution:
[0007] A protective component for a smoke sensing device, the protective component for the smoke sensing device comprising:
[0008] A smoke protection cover, wherein the smoke protection cover is formed with an opening and is covered on the outside of the smoke detection module through the opening, the inner wall surface of the smoke protection cover abuts against the outside of the smoke detection module, the side surface of the smoke protection cover formed with the opening is a docking surface, and the smoke protection cover is also formed with a second smoke inlet portion corresponding to the position of the first smoke inlet portion of the smoke detection module and a second air inlet portion corresponding to the position of the first air inlet portion of the smoke detection module.
[0009] The protective component of the smoke sensing device described in this application has the following beneficial effects compared with the background technology:
[0010] The protective component of the above-mentioned smoke sensing device, on the one hand, the smoke sensing protective cover is arranged on the outside of the smoke sensing detection module, and the inner wall surface of the smoke sensing protective cover is abutted against the outside of the smoke sensing detection module. In actual application, the docking surface of the smoke sensing protective cover is docked outward to form an enclosure for the smoke sensing detection module, thereby being able to play an effective protective role for the smoke sensing detection module; on the other hand, the smoke sensing protective cover is formed with a second smoke inlet portion corresponding to the position of the first smoke inlet portion of the smoke sensing detection module, and a second air inlet portion corresponding to the position of the first air inlet portion of the smoke sensing detection module. In this way, the smoke sensing protective cover can protect the smoke sensing detection module without interfering with the operation of the smoke sensing detection module itself.
[0011] In one of the embodiments, the smoke protection cover is formed with a wiring groove.
[0012] In one of the embodiments, the second smoke inlet, the second air inlet and the outlet of the wiring trough are all notches provided on the smoke protection cover and extending to the docking surface.
[0013] In one of the embodiments, the smoke sensing protective cover is provided with a docking portion arranged around the second smoke inlet portion, and the protective component of the smoke sensing device further includes a sealing ring arranged in the docking portion.
[0014] In one of the embodiments, the smoke protection cover includes a guide portion connected to a smoke outlet of the smoke detection module, and an outlet of the guide portion is located at an opening of the smoke protection cover.
[0015] In one of the embodiments, the protection assembly of the smoke sensing device further comprises a sealing gasket covering the opening of the smoke sensing protection cover, wherein a through hole is formed on the sealing gasket, and the through hole is communicated with the outlet of the guide portion.
[0016] In one of the embodiments, a flange protruding outward is provided around the edge of the through hole.
[0017] In one of the embodiments, abutment portion is provided on one side of the smoke protection cover; a mounting portion is provided on the other side of the smoke protection cover, and a mounting hole is provided on the mounting portion.
[0018] The above second technical problem is solved by the following technical solution:
[0019] A smoke sensing device, comprising the protective component of the smoke sensing device, and also comprising a smoke detection module, wherein the smoke detection module comprises an outer shell, a sensor arranged inside the outer shell, and a first air inlet, a first smoke inlet and a smoke outlet respectively connected to the outer shell; the smoke sensing protective cover is used to cover the outside of the smoke detection module.
[0020] The smoke sensing device described in this application has the following beneficial effects compared with the background technology:
[0021] In the above-mentioned smoke sensing device, on the one hand, the smoke sensing protective cover is arranged on the outside of the smoke sensing detection module, and the inner wall surface of the smoke sensing protective cover is abutted against the outside of the smoke sensing detection module. In actual application, the docking surface of the smoke sensing protective cover is docked outward to form an enclosure for the smoke sensing detection module, thereby being able to play an effective protective role for the smoke sensing detection module; on the other hand, the smoke sensing protective cover is formed with a second smoke inlet portion corresponding to the position of the first smoke inlet portion of the smoke sensing detection module, and a second air inlet portion corresponding to the position of the first air inlet portion of the smoke sensing detection module. In this way, the smoke sensing protective cover can protect the smoke sensing detection module without interfering with the operation of the smoke sensing detection module itself.
[0022] The third technical problem mentioned above is solved by the following technical solution:
[0023] A fume treatment device comprises the smoke sensing device.
[0024] The oil fume treatment device described in this application has the following beneficial effects compared with the background technology:
[0025] In the above-mentioned oil fume treatment device, on the one hand, the smoke protective cover is arranged on the outside of the smoke detection module, and the inner wall surface of the smoke protective cover is abutted against the outside of the smoke detection module. In actual application, the docking surface of the smoke protective cover is docked outward to form an enclosure for the smoke detection module, thereby effectively protecting the smoke detection module; on the other hand, the smoke protective cover is formed with a second smoke inlet portion corresponding to the position of the first smoke inlet portion of the smoke detection module, and a second air inlet portion corresponding to the position of the first air inlet portion of the smoke detection module. In this way, the smoke protective cover can protect the smoke detection module without interfering with the operation of the smoke detection module itself. BRIEF DESCRIPTION OF THE DRAWINGS
[0026] The drawings constituting a part of the present application are used to provide a further understanding of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application.
[0027] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.
[0028] Figure 1 This is a partial structural schematic diagram of an oil fume treatment device according to an embodiment of the present application.
[0029] Figure 2 for Figure 1 Enlarged structural diagram at A.
[0030] Figure 3 This is a top view of the structure of an oil fume treatment device according to one embodiment of the present application.
[0031] Figure 4 for Figure 3 Enlarged structural diagram at B.
[0032] Figure 5 This is a three-dimensional structural diagram of a smoke sensing device according to an embodiment of the present application from one perspective.
[0033] Figure 6 This is a three-dimensional structural diagram from another perspective of a smoke sensing device according to an embodiment of the present application.
[0034] Figure 7 This is an exploded structural diagram of a smoke sensing device according to an embodiment of the present application.
[0035] Figure 8 It is a cross-sectional structural diagram of a smoke sensing device according to an embodiment of the present application.
[0036] Reference numerals:
[0037] 10. Smoke sensing device; 11. Smoke sensing detection module; 111. First air inlet; 112. First smoke inlet; 113. Smoke outlet; 114. Wire; 12. Protective assembly; 121. Smoke sensing protective cover; 1211. Second smoke inlet; 1212. Second air inlet; 1213. Wire trough; 1214. First protective shell; 1215. Second protective shell; 1216. Docking part; 1217. First clamp; 1218. Pressing plate; 12181. Pressing part ; 12182, guide part; 12183, guide channel; 12191, abutment part; 12192, mounting part; 12193, mounting hole; 12194, fastener; 122, sealing ring; 1221, first slot; 123, sealing gasket; 1231, through hole; 1232, flange; 20, bellows; 21, smoke return hole; 22, abutment interface; 30, check valve; 31, smoke exhaust part; 311, smoke exhaust hole; 40, electrical box; 50, centrifugal fan. DETAILED DESCRIPTION
[0038] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present application, so the present application is not limited by the specific embodiments disclosed below.
[0039] See also Figures 1 to 4 , Figure 1 A schematic structural diagram of an oil fume treatment device according to an embodiment of the present application is shown. Figure 2 Shows Figure 1 Enlarged structural diagram at A. Figure 3 A top view of the structure of an oil fume treatment device according to an embodiment of the present application is shown. Figure 4 Shows Figure 3 Enlarged structural diagram at B. An oil fume treatment device provided by one embodiment of the present application includes but is not limited to a range hood, specifically, for example, a side suction range hood, a 7-shaped range hood or a top suction range hood, etc. The oil fume treatment device includes a shell and a smoke sensor 10, and the smoke sensor 10 is installed on the shell. The specific position of the smoke sensor 10 on the shell can be the bellows 20 of the oil fume treatment device, the smoke hood of the oil fume treatment device, or other parts of the shell, which can be flexibly adjusted and set according to actual needs.
[0040] See also Figure 2 , Figures 5 to 8Specifically, the smoke sensing device 10 includes a smoke sensing detection module 11. The smoke sensing detection module 11 includes a housing, a sensor disposed inside the housing, and a first air inlet 111, a first smoke inlet 112, and a smoke outlet 113 respectively connected to the housing. Optionally, the first air inlet 111 is, for example, one or two. When it is set to two, it is specifically connected to the opposite sides of the housing. In the process of detecting oil smoke, the detected oil smoke enters the housing through the first smoke inlet 112, so as to be detected by the sensor. At the same time, the air pressure inside the housing is lower than the atmospheric pressure. Under the action of negative pressure, fresh air will simultaneously enter the housing through the first air inlet 111. In the process of entering the housing, the sensor will be cleaned and protected, and the damage to the sensor caused by oil smoke will be reduced, thereby extending the service life of the smoke sensing detection module 11. In addition, the fresh air is mixed with the detected oil smoke and is discharged outward through the smoke outlet 113.
[0041] In some embodiments, the smoke sensing device 10 further includes a protective component 12. The protective component 12 specifically includes a smoke sensing protective cover 121. The smoke sensing protective cover 121 is formed with an opening and is covered on the outside of the smoke sensing detection module 11 through the opening. The inner wall surface of the smoke sensing protective cover 121 abuts against the outside of the smoke sensing detection module 11. The side surface of the smoke sensing protective cover 121 formed with an opening is a docking surface. The docking surface of the smoke sensing protective cover 121 is connected and matched with the shell of the oil fume treatment device to form an enclosure for the smoke sensing detection module. The smoke sensing protective cover 121 is formed with a second smoke inlet 1211 corresponding to the position of the first smoke inlet 112 of the smoke sensing detection module 11 and a second air inlet 1212 corresponding to the position of the first air inlet 111 of the smoke sensing detection module 11.
[0042] It should be noted that the docking surface of the smoke protection cover 121 is connected and matched with the shell of the oil fume treatment device, which can be directly connected or indirectly connected through a certain component.
[0043] It should be noted that the second smoke inlet 1211 and the second air inlet 1212 can be either holes that are closed on all sides or gaps that are not completely closed on all sides. They can be flexibly adjusted and set according to actual needs and are not limited here.
[0044] In one embodiment, the second smoke inlet portion 1211 and the second air inlet portion 1212 are both notches provided on the smoke protection cover 121 and extending to the docking surface, so that the smoke protection cover 121 can be conveniently placed on the smoke detection device 10 .
[0045] It should be noted that the position correspondence between the first smoke inlet 112 and the second smoke inlet 1211 means that along the smoke inlet direction, the contour of the second smoke inlet 1211 overlaps with the contour of the first smoke inlet 112 at least partially or completely, so that the first smoke inlet 112 can be connected with the second smoke inlet 1211 of the shell, thereby letting the measured oil smoke in. The first smoke inlet 112 can be directly connected with the second smoke inlet 1211 of the shell; or it can be indirectly connected, that is, an intermediate element is allowed to be provided between the two.
[0046] It should be noted that the corresponding position of the first air inlet 111 and the second air inlet 1212 means that along the air inlet direction, the contour of the second air inlet 1212 overlaps with the contour of the first air inlet 111 in at least a part of the area or completely overlaps, so that the first air inlet 111 can communicate with the outside, so that fresh air can be let in. Specifically, in this embodiment, the first air inlet 111, for example, passes through the second air inlet 1212 in a direction away from the smoke protection cover 121, so that it can communicate with the outside.
[0047] The above-mentioned oil fume treatment device, smoke sensor device 10 and its protective component 12, on the one hand, the smoke sensor protective cover 121 is arranged on the outside of the smoke detection module 11, the inner wall surface of the smoke sensor protective cover 121 is abutted against the outside of the smoke detection module 11, and the side surface of the opening formed on the smoke sensor protective cover 121 is a docking surface, so that it can effectively protect the smoke detection module 11; on the other hand, the smoke sensor protective cover 121 is formed with a second smoke inlet portion 1211 corresponding to the position of the first smoke inlet portion 112 of the smoke detection module 11, and a second air inlet portion 1212 corresponding to the position of the first air inlet portion 111 of the smoke detection module 11, so that the smoke sensor protective cover 121 can protect the smoke detection module 11 while not interfering with the operation of the smoke detection module 11 itself.
[0048] Among them, in order to enable the smoke outlet part 113 of the smoke detection module 11 to discharge the mixed gas formed by the fresh air and the smoke to be detected, a smoke return hole 21 corresponding to the position of the smoke outlet part 113 of the smoke detection module 11 is formed on the shell, so that the mixed gas discharged from the smoke outlet part 113 enters the interior of the shell through the smoke return hole 21.
[0049] Generally speaking, the installation position of the smoke sensor 10 not only affects the accuracy of the detection data of the smoke detection module 11, but also affects the service life of the smoke detection module 11. When the smoke sensor 10 is installed at the oil net air inlet of the oil fume treatment device, the oil net air inlet area is the first to contact the oil fume, and the reaction speed is fast, but a large amount of oil fume will soon block the smoke detection module 11, and the service life is greatly reduced. In addition, the oil fume concentration in the oil net air inlet area is large, and the smoke detection module 11 will easily reach the peak value of the data once it detects the oil fume, so that the data detection is not detailed enough, and it cannot well feedback the amount of oil fume, but can only feedback whether there is smoke or no smoke. Based on this, in this embodiment, the smoke sensor 10 is installed on the top of the bellows 20, and the smoke return hole 21 is correspondingly formed on the top of the bellows 20. In addition, the smoke sensor 10 is also connected to the check valve 30 to collect and detect the oil fume discharged outward from the check valve 30. The concentration of oil smoke discharged from the check valve 30 is lower than that in the oil net air inlet area, so it is not easy to cause blockage defects after entering the interior of the smoke detection module 11, and the service life is extended.
[0050] See also Figure 3 , Figure 4 and Figure 7 In one embodiment, the smoke protection cover 121 is formed with a wiring groove 1213. In this way, the wire 114 of the smoke detection module 11 can be prevented from being exposed, thereby ensuring the safety of electricity use, preventing the wire 114 from being pulled during transportation or use, resulting in poor conduction, or being bitten by animals such as mice, thereby avoiding abnormal signal collection.
[0051] In some embodiments, the wire 114 at the wire outlet of the smoke detection module 11 can be passed through the wiring groove 1213 and enter the electrical box 40 to be connected to the electrical box 40 .
[0052] In some embodiments, the outlet of the wiring groove 1213 is a notch provided on the smoke protection cover 121 and extending to the docking surface, so that it is convenient to cover the smoke protection cover 121 on the smoke detection device 10 .
[0053] See also Figures 5 to 8In some embodiments, the smoke protection cover 121 includes a first protection shell 1214 and a second protection shell 1215 connected to the first protection shell 1214. Specifically, the first protection shell 1214 and the second protection shell 1215 are, for example, an integrated structure, including but not limited to one-piece molding using a sheet metal process, one-piece molding using a die-casting process, one-piece molding using an injection molding process, and the like. Among them, the smoke detection module 11 is installed inside the first protection shell 1214, and one end of the second protection shell 1215 is connected to the first protection shell 1214, specifically according to the corresponding arrangement of the outlet of the smoke detection module 11, including but not limited to being located at the top or side of the first protection shell 1214, and the other end of the second protection shell 1215 is connected to the electrical box 40, so that the wire 114 at the outlet is passed through the second protection shell 1215 and connected to the electrical box 40.
[0054] In some embodiments, the first protective shell 1214 is adapted to the shape of the smoke detection module 11, and the outer inner side walls of the first protective shell 1214 are tightly abutted against the outer outer side walls of the smoke detection module 11, so that the smoke detection module 11 is stably installed inside the first protective shell 1214, which can improve the sealing performance and prevent the smoke entering through the second smoke inlet 1211 from flowing outward through the gap between the first protective shell 1214 and the smoke detection module 11, so that the oil smoke can flow back to the inside of the shell through the smoke return hole 21 as much as possible.
[0055] See also Figure 2 , Figures 5 to 7 In one embodiment, the smoke sensing protective cover 121 is provided with a docking portion 1216 arranged around the second smoke inlet portion 1211. Optionally, the docking portion 1216 is plugged and matched with the smoke exhaust portion 31 on the check valve 30 of the oil fume treatment device. The docking portion 1216 includes but is not limited to a flange, a groove, etc. arranged around the periphery of the second smoke inlet portion 1211, as long as it can be easily plugged and matched with the smoke exhaust portion 31 of the check valve 30 to achieve mutual communication between the first smoke inlet portion 112 and the smoke exhaust portion 31. In addition, the smoke exhaust portion 31 is, for example, arranged on the side wall of the check valve 30, including but not limited to a convex column, a smoke exhaust pipe, a smoke exhaust nozzle, etc. formed with a smoke exhaust hole 311, as long as the airflow of the check valve 30 can be led outward. In this way, compared with the method of using pipes to connect the second smoke inlet 1211 and the smoke exhaust part 31 of the check valve 30, the method of plugging and cooperating with the docking part 1216 and the smoke exhaust part 31 can save space, facilitate installation, save the work of connecting the pipes, and improve production efficiency.
[0056] It should be noted that the docking portion 1216 can be a part of the smoke protective cover 121, that is, the docking portion 1216 and the other parts of the smoke protective cover 121 are integrally formed; it can also be an independent component separable from the other parts of the smoke protective cover 121, that is, the docking portion 1216 can be manufactured independently and then combined with the other parts of the smoke protective cover 121 into a whole.
[0057] It should be noted that the smoke exhaust portion 31 can be a part of the check valve 30, that is, the smoke exhaust portion 31 and the other parts of the check valve 30 are integrally formed; it can also be an independent component that can be separated from the other parts of the check valve 30, that is, the smoke exhaust portion 31 can be manufactured independently and then integrated with the other parts of the check valve 30.
[0058] In one embodiment, the protection assembly 12 of the smoke sensing device 10 further includes a sealing ring 122 disposed in the docking portion 1216. The sealing ring 122 includes but is not limited to being clamped and disposed in the docking portion 1216, so as to be firmly fixed at the docking portion 1216. The sealing ring 122 can improve the sealing performance between the smoke exhaust portion 31 and the docking portion 1216, and prevent the oil smoke discharged from the smoke exhaust portion 31 from flowing outward through the gap with the docking portion 1216, so that the oil smoke enters the interior of the smoke sensing detection module 11 and is detected by the sensor, thereby improving the accuracy of sampling.
[0059] Specifically, one side of the sealing ring 122 is in close contact with the smoke detection module 11 and is arranged around the circumference of the first smoke inlet 112, and the other side is in close contact with the end surface of the smoke exhaust pipe. In this way, the oil smoke exhausted from the smoke exhaust part 31 can enter the first smoke inlet 112 through the sealing ring 122, preventing oil smoke leakage and improving the accuracy of sampling.
[0060] In some embodiments, a first clamping block 1217 is provided on the inner wall of the docking portion 1216, and a first clamping groove 1221 adapted to the first clamping block 1217 is provided on the outer wall of the sealing ring 122 in the circumferential direction. The first clamping block 1217 is clamped and fixed in the first clamping groove 1221, thereby realizing the clamping and fixing of the sealing ring 122 and the docking portion 1216.
[0061] In some embodiments, a second card groove is provided on the inner wall of the docking portion 1216, and a second card block adapted to the second card groove is provided on the circumferential direction of the outer wall of the sealing ring 122. The second card block is snap-fitted and fixed in the second card groove, thereby realizing snap-fitting and fixing of the sealing ring 122 and the docking portion 1216.
[0062] See also Figure 2 and Figure 6In one embodiment, the smoke protection cover 121 includes a guide portion 12182 connected to the smoke outlet 113 of the smoke detection module 11. The smoke protection cover 121 includes a pressing plate 1218 for pressing and fitting with the side of the smoke outlet 113 of the smoke detection module 11. The pressing plate 1218 includes a pressing portion 12181 and a guide portion 12182 connected to the pressing portion 12181. The pressing portion 12181 abuts against the side of the smoke outlet 113. The guide portion 12182 cooperates with the side of the smoke outlet 113 to form a guide channel 12183. The guide channel 12183 connects the smoke outlet 113 and the smoke return hole 21 of the shell. In this way, the oil smoke discharged from the smoke outlet 113 enters the smoke return hole 21 through the guide channel 12183 and returns to the inside of the shell through the smoke return hole 21. In addition, since the pressing portion 12181 connected to the guide portion 12182 abuts against the side of the smoke outlet portion 113 without a gap, the sealing performance can be improved to prevent the oil smoke discharged from the smoke outlet portion 113 from escaping.
[0063] In some embodiments, the guide channel 12183 includes but is not limited to a channel with a smooth transition, such as an arc-shaped channel, so that the oil smoke discharged from the smoke outlet 113 can be smoothly guided to the smoke return hole 21.
[0064] In some embodiments, the outlet of the guide portion 12182 is located at the opening of the smoke protection cover 121. It is understandable that the smoke protection cover 121 can be directly covered at the smoke return hole 21, which is more convenient than connecting the smoke outlet 113 and the smoke return hole 21 through a pipe.
[0065] In some embodiments, the cross-sectional area of the airflow through the smoke return hole 21 is greater than or equal to the cross-sectional area of the airflow through the smoke exhaust hole 311 of the smoke exhaust portion 31 , so that the sampled gas can flow smoothly.
[0066] See also Figure 2 , Figures 5 to 7 In one embodiment, the protective assembly 12 of the smoke sensing device 10 further includes a sealing gasket 123 covering the opening of the smoke sensing protective cover 121. A through hole 1231 is formed on the sealing gasket 123, and the through hole 1231 is communicated with the outlet of the guide portion 12182. In this way, on the one hand, the bottom end of the smoke sensing protective cover 121 is tightly abutted against the shell through the sealing gasket 123, thereby improving the air tightness of the position of the smoke sensing protective cover 121 and the shell at the docking portion 1216 to prevent the leakage of oil smoke; on the other hand, a through hole 1231 corresponding to the position of the smoke return hole 21 is also formed on the sealing gasket 123, so that the guide channel 12183 is communicated with the shell through the through hole 1231.
[0067] Specifically, the through hole 1231 has the same shape and size as the smoke return hole 21, and a flange 1232 protruding outward is arranged around the edge of the through hole 1231. The flange 1232 passes through the smoke return hole 21 and extends into the shell, so that the oil smoke can be introduced into the shell, and the sealing performance is good.
[0068] See also Figures 3 to 5 In one embodiment, abutment portion 12191 is provided on one side of the smoke protection cover 121, and the abutment portion 12191 is used to abut and fix on the housing. A mounting portion 12192 is provided on the other side of the smoke protection cover 121, and the mounting portion 12192 is provided with a mounting hole 12193. The mounting portion 12192 is connected and fixed to the housing through a fastener 12194 passing through the mounting hole 12193. The fastener 12194 includes but is not limited to screws, pins, rivets, etc., and the mounting hole 12193 is adapted to the fastener 12194. In this way, since one of the side portions of the smoke protective cover 121 is fixed to the shell by the abutment portion 12191, there is no need to connect it to the shell by the fastener 12194. In addition, the mounting portion 12192 on the other side of the smoke protective cover 121 is fixed to the shell by the fastener 12194, so that it can be stably installed on the shell without the problem of oil fume leakage and looseness. The operation is simple, and only one fastener 12194 is needed to fix it.
[0069] In some embodiments, the housing is provided with an abutment port 22 that abuts against the abutment portion 12191, and the abutment portion 12191 is abutted and fixed in the abutment port 22. Specifically, the abutment port 22 is formed at the top of the wind box 20. In this way, when the smoke protection cover 121 is assembled to the housing, the abutment portion 12191 is fixed to the housing by abutting and fixing in the abutment port 22.
[0070] In some specific embodiments, the smoke detection module 11 and its wire 114 are first installed in the smoke protection cover 121, and then the assembled smoke detection device 10 is installed between the check valve 30 and the junction box and fixed to the shell, specifically, for example, the top plate of the box seat. The abutment portion 12191 of the smoke protection cover 121 is inserted into the abutment interface 22 corresponding to the top plate of the box seat, and the other end is fixed to the top plate of the box seat using a fastener 12194. Among them, the first smoke inlet portion 112 of the smoke detection module 11 is connected to the smoke exhaust portion 31 of the check valve 30, the smoke outlet portion 113 is connected to the smoke return hole 21 of the shell, and the first air inlet portion 111 is connected to the external environment for inhaling fresh air. The centrifugal fan 50 continuously inhales new oil smoke, and after being accelerated by the centrifugal fan 50, a part of the oil is separated and thrown to the wall of the wind cabinet, and the remaining oil smoke is blown out from the check valve 30, and a part of the blown gas enters the smoke detection module 11 for detection. In this way, a non-stop closed-loop detection is formed, and the detected data changes are fed back to the main control board for analysis in real time. The main control board issues a fan speed control command to change the operating state of the oil fume treatment device. By continuously detecting the smoke discharged from the check valve 30 and analyzing the fluctuation of the oil fume concentration of the sampled smoke, the size change of the oil fume can be more finely perceived, thereby making more accurate control of the range hood.
[0071] In the description of the present application, it should be understood that if the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. appear, the orientation or position relationship indicated by these terms is based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the present application and simplifying the description, and does 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 application.
[0072] In addition, if the terms "first" or "second" appear, these terms are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of this application, if the term "plurality" appears, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.
[0073] In this application, unless otherwise clearly specified and limited, if the terms "installed", "connected", "connected", "fixed" and the like appear, these terms should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to the specific circumstances.
[0074] In the present application, unless otherwise clearly specified and limited, if there is a description that a first feature is "above" or "below" a second feature, etc., or similar descriptions appear, it may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "above" and "above" the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. The first feature being "below", "below" and "below" the second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.
[0075] It should be noted that if an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. If an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. If present, the terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used in this application are for illustrative purposes only and do not represent the only implementation method.
[0076] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, 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, they should be considered to be within the scope of this specification.
[0077] The above-described embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be construed as limiting the scope of the patent application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent application shall be subject to the attached claims.
Claims
1. A protective component for a smoke sensing device, characterized in that: The protection component (12) of the smoke sensing device (10) comprises: A smoke protection cover (121), wherein the smoke protection cover (121) is formed with an opening and is disposed on the outside of the smoke detection module (11) through the opening, the inner wall surface of the smoke protection cover (121) abuts against the outside of the smoke detection module (11), the side surface of the smoke protection cover (121) on which the opening is formed is a docking surface, and the smoke protection cover (121) is also formed with a second smoke inlet portion (1211) corresponding to the position of the first smoke inlet portion (112) of the smoke detection module (11) and a second air inlet portion (1212) corresponding to the position of the first air inlet portion (111) of the smoke detection module (11).
2. The protective assembly of the smoke sensing device according to claim 1, characterized in that: The smoke protection cover (121) is formed with a wiring groove (1213).
3. The protective assembly of the smoke sensing device according to claim 2, characterized in that: The outlets of the second smoke inlet (1211), the second air inlet (1212) and the wiring groove (1213) are all notches arranged on the smoke protection cover (121) and extending to the docking surface.
4. The protective assembly of the smoke sensing device according to claim 1, characterized in that: The smoke sensing protective cover (121) is provided with a docking portion (1216) arranged around the second smoke inlet portion (1211), and the protective component (12) of the smoke sensing device (10) further comprises a sealing ring (122) arranged in the docking portion (1216).
5. The protective component of the smoke sensing device according to claim 1 or 3, characterized in that: The smoke protection cover (121) comprises a guide portion (12182) connected to the smoke outlet portion (113) of the smoke detection module (11), and an outlet of the guide portion (12182) is located at an opening of the smoke protection cover (121).
6. The protective assembly of the smoke sensing device according to claim 5, characterized in that: The protective component (12) of the smoke sensing device (10) further comprises a sealing gasket (123) covering the opening of the smoke sensing protective cover (121), wherein a through hole (1231) is formed on the sealing gasket (123), and the through hole (1231) is communicated with an outlet of the guide portion (12182).
7. The protective assembly of the smoke sensing device according to claim 6, characterized in that: The through hole (1231) is provided with a flange (1232) protruding outward around the edge of the hole.
8. The protective assembly of the smoke sensing device according to claim 1, characterized in that: One side of the smoke protection cover (121) is provided with an abutment portion (12191); the other side of the smoke protection cover (121) is provided with a mounting portion (12192), and the mounting portion (12192) is provided with a mounting hole (12193).
9. A smoke sensing device, characterized in that: The smoke sensing device (10) comprises a protective component (12) of the smoke sensing device (10) according to any one of claims 1 to 8, and also comprises a smoke sensing detection module (11), wherein the smoke sensing detection module (11) comprises a housing, a sensor arranged inside the housing, and a first air inlet (111), a first smoke inlet (112), and a smoke outlet (113) respectively connected to the housing; the smoke sensing protective cover (121) is used to cover the outside of the smoke sensing detection module (11).
10. A fume treatment device, characterized in that: The oil fume treatment device comprises the smoke sensing device (10) as claimed in claim 9.