Range hood with PM2.5 detection function and cabinet

Abstract

The utility model discloses a range hood with a PM2.5 detection function and a cabinet, and the range hood with the PM2.5 detection function comprises a main machine body which is provided with a telescopic inner cavity; the telescopic panel assembly is connected into the telescopic inner cavity in a sliding mode, and a PM2.5 detection module is arranged in a mounting cavity of the telescopic panel assembly; the push rod assembly is used for driving the telescopic panel assembly to extend out of or retract into the telescopic inner cavity; compared with the prior art, according to the range hood with the PM2.5 detection function, when the range hood is started, the telescopic panel assembly stretches out of the telescopic inner cavity, the first air inlet channel is communicated with the PM2.5 detection module, the PM2.5 detection module detects the content of PM2.5 in cooking environment air in real time, and a healthy cooking environment can be provided for a user; when cooking is finished and the range hood is in a standby state, the smoke exhaust fan is turned off, the telescopic panel assembly retracts into the telescopic inner cavity, the second air inlet channel communicates with the PM2.5 detection module, the PM2.5 detection module continues to detect PM2.5 in ambient air, oil smoke can be prevented from flowing backwards, and the ambient air quality is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of range hoods, and in particular to a range hood and a cabinet with a PM2.5 detection function. Background Art

[0002] Range hoods have become a fixture in countless kitchens, solving the problem of cooking fumes. With rising living standards, the PM2.5 index has become a health indicator, and users are demanding more than just basic fume removal from range hoods. Improving the intelligence of range hoods to ensure healthier cooking practices has become a pressing issue. Existing range hoods, to conserve kitchen space, feature a retractable panel assembly with a PM2.5 detection module mounted on it. When cooking, the hood operates, extending the panel assembly into the retractable cavity. The PM2.5 detection module then extends with the panel assembly and monitors the air quality of the cooking environment. However, after cooking, when the panel assembly retracts, the PM2.5 detection module is unable to detect PM2.5 levels in the ambient air, and users are not alerted to any backflow of cooking fumes. Utility Model Content

[0003] The purpose of the present utility model is to provide a range hood and a cabinet with PM2.5 detection function, which are used to solve the above-mentioned technical problems.

[0004] A range hood with PM2.5 detection function, comprising

[0005] The main body includes a cover assembly and a frame assembly, wherein the cover assembly is connected to the frame assembly to form a telescopic inner cavity therebetween;

[0006] A telescopic panel assembly is slidably connected to the telescopic inner cavity, and a PM2.5 detection module is provided in the mounting cavity of the telescopic panel assembly;

[0007] A push rod assembly, which is provided on the frame assembly and is used to drive the telescopic panel assembly to extend or retract into the telescopic inner cavity;

[0008] Among them, the PM2.5 detection module has a first air inlet channel and a second air inlet channel. When the push rod assembly drives the telescopic panel assembly to extend out of the telescopic inner cavity, the external air enters through the first air inlet channel and is detected by the PM2.5 detection module; when the push rod assembly drives the telescopic panel assembly to retract into the telescopic inner cavity, the external air enters through the second air inlet channel and is detected by the PM2.5 detection module.

[0009] According to one embodiment of the present invention, a first detection air inlet is provided on the cover plate assembly, and the first detection air inlet is connected to the telescopic inner cavity. A second detection air inlet is provided on the top plate of the telescopic panel assembly, which is aligned with the PM2.5 detection module. The channel through which the second detection air inlet is connected to the air inlet of the PM2.5 detection module is the first air inlet channel, and the channel through which the first detection air inlet is connected to the second detection air inlet and the air inlet of the PM2.5 detection module is the second air inlet channel.

[0010] According to one embodiment of the present invention, a first detection air inlet is provided on the cover plate assembly, a third detection air inlet is provided on the bottom surface of the frame assembly, the first detection air inlet and the third detection air inlet are connected to the telescopic inner cavity, a second detection air inlet aligned with the PM2.5 detection module is provided on the top plate of the telescopic panel assembly, and a fourth detection air inlet aligned with the PM2.5 detection module is provided on the bottom plate of the telescopic panel assembly. The channel through which the second detection air inlet is connected to the air inlet of the PM2.5 detection module is the first air inlet channel, and the channel through which the first detection air inlet and the second detection air inlet are sequentially connected to the air inlet of the PM2.5 detection module and the channel through which the third detection air inlet and the fourth detection air inlet are sequentially connected to the air inlet of the PM2.5 detection module together constitute the second air inlet channel.

[0011] According to one embodiment of the present invention, when the telescopic panel assembly extends out of or retracts into the telescopic inner cavity, the fourth detection air inlet is always located in the telescopic inner cavity; it also includes a sealing assembly, the sealing assembly includes a detection hole switch assembly and a sealing member, which is used to seal the telescopic inner cavity when the telescopic panel assembly extends out of the telescopic inner cavity, and the detection hole switch assembly seals the third detection air inlet.

[0012] According to one embodiment of the present invention, the sealing assembly includes a detection hole switch assembly, the detection hole switch assembly includes a switch seat, a switch slider and a slider spring, the switch seat is arranged on the bottom surface of the frame assembly, and is provided with a avoidance opening corresponding to the third detection air inlet, the switch slider is slidably connected to the switch seat, and is used to block or open the avoidance opening, one end of the slider spring is connected to the switch slider, and the other end is fixed in the frame assembly, the switch slider is provided with a slider starting part, and the slider starting part is aligned with the moving direction of the telescopic panel assembly.

[0013] According to one embodiment of the present utility model, the detection hole switch assembly includes a switch bracket, which is provided with a rotating shaft and a rotation starting part. The rotating shaft is rotatably connected to the telescopic inner cavity, and the rotation starting part is provided above the rotating shaft and is aligned with the moving direction of the telescopic panel assembly; the rotation starting part is used to be driven and rotate the rotating shaft to open or close the third detection air inlet.

[0014] According to one embodiment of the present invention, a sponge sealing frame surrounding the third detection air inlet is provided on the bottom surface of the telescopic inner cavity, and the switch bracket is placed on the upper end surface of the sponge sealing frame and seals the third detection air inlet.

[0015] According to one embodiment of the present invention, the sealing assembly further includes a magnet, the height of the magnet is adapted to the height of the sponge sealing frame, and the switch bracket is a metal part.

[0016] According to one embodiment of the present invention, the seal includes a first seal and a second seal, and the first seal and the second seal are respectively arranged on the top plate and the bottom plate of the telescopic panel assembly, the second detection air inlet is located on the front side of the first seal, and the fourth detection air inlet is located on the rear side of the second seal. When the telescopic panel assembly extends out of the telescopic inner cavity, the first seal and the second seal seal the opening of the telescopic inner cavity, the second detection air inlet is exposed from the telescopic inner cavity, and the fourth detection air inlet is located in the telescopic inner cavity.

[0017] A cabinet includes a cabinet body, which is provided with an installation cavity for installing the above-mentioned range hood with PM2.5 detection function. The cabinet body is also provided with a cabinet door, which is used to open or close the installation cavity. The cabinet door is provided with a fifth detection air inlet for allowing external space to enter the installation cavity. When the push rod assembly drives the telescopic panel assembly to retract the telescopic inner cavity, external air enters the installation cavity through the fifth detection air inlet, and the air in the installation cavity is introduced through the second air inlet channel and detected by the PM2.5 detection module.

[0018] Compared with the existing technology, the range hood with PM2.5 detection function of the present invention has the following advantages:

[0019] The range hood of the present invention has a PM2.5 detection function. When the range hood is started, the telescopic panel assembly extends out of the telescopic inner cavity, and the first air inlet channel is connected with the PM2.5 detection module, so that the PM2.5 detection module detects the PM2.5 content in the air of the cooking environment in real time, thereby providing users with a healthy cooking environment; when cooking is finished and the range hood is in standby mode, the smoke exhaust fan is turned off, the telescopic panel assembly retracts into the telescopic inner cavity, and the second air inlet channel is connected with the PM2.5 detection module, and the PM2.5 detection module continues to detect PM2.5 in the ambient air, thereby avoiding backflow of oil smoke and ensuring the quality of ambient air. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is an exploded view of a first embodiment of a range hood with a PM2.5 detection function;

[0021] Figure 2 This is a cross-sectional view of the range hood with PM2.5 detection function of the first embodiment installed in a cabinet with the telescopic panel assembly retracted into the telescopic cavity;

[0022] Figure 3 for Figure 2 A partial enlarged view of middle A;

[0023] Figure 4 This is a cross-sectional view of the range hood with PM2.5 detection function of the first embodiment installed in a cabinet with the telescopic panel assembly extending out of the telescopic inner cavity;

[0024] Figure 5 for Figure 4 A partial enlarged view of middle B;

[0025] Figure 6 An exploded view of a second embodiment of a range hood with a PM2.5 detection function. In this embodiment, the range hood has the first detection hole switch assembly;

[0026] Figure 7 for Figure 6 A schematic diagram of the structure of the telescopic panel assembly in the other direction;

[0027] Figure 8 This is an exploded view of the first detection hole switch assembly;

[0028] Figure 9 This is a cross-sectional view of the range hood with PM2.5 detection function of the second embodiment installed in a cabinet with the telescopic panel assembly retracted into the telescopic cavity;

[0029] Figure 10 for Figure 9 A partial enlarged view of center C;

[0030] Figure 11 This is a cross-sectional view of the range hood with PM2.5 detection function of the second embodiment installed in a cabinet with the telescopic panel assembly extending out of the telescopic inner cavity;

[0031] Figure 12 for Figure 11 A partial enlarged view of middle D;

[0032] Figure 13 This is an exploded view of a third embodiment of a range hood with a PM2.5 detection function. In this embodiment, the range hood has a second detection hole switch assembly.

[0033] Figure 14 for Figure 13 A schematic diagram of the structure of the telescopic panel assembly in the other direction;

[0034] Figure 15 This is an exploded view of the second detection hole switch assembly;

[0035] Figure 16 This is a cross-sectional view of the range hood with PM2.5 detection function according to the third embodiment installed in a cabinet with the telescopic panel assembly retracted into the telescopic cavity;

[0036] Figure 17 for Figure 6A partial enlarged view of middle E;

[0037] Figure 18 This is a cross-sectional view of the range hood with PM2.5 detection function according to the third embodiment installed in a cabinet with the telescopic panel assembly extending out of the telescopic inner cavity;

[0038] Figure 19 for Figure 18 A partial enlarged view of middle F;

[0039] In the figure: 1. Main body, 11. Cover assembly, 111. First detection air inlet, 12. Frame assembly, 121. Third detection air inlet, 1211. Sponge sealing frame, 13. Bellows assembly, 14. Side baffle, 15. Back panel, 2. Telescopic panel assembly, 21. Second detection air inlet, 22. Fourth detection air inlet, 3. PM2.5 detection module, 4. Push rod assembly, 5. Detection hole switch assembly, 51. Switch seat, 52. Switch slider, 521. Slider starter, 53. Slider spring, 54. Switch bracket, 541. Rotating shaft, 542. Rotating starter, 55. Magnet, 6. Seal, 61. First seal, 62. Second seal, 7. Cabinet body, 71. Cabinet door, 711. Fifth detection air inlet

[0040] The realization of the functions and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0041] The following diagrams illustrate various embodiments of the present invention. For clarity, many practical details will be included in the following description. However, it should be understood that these practical details are not intended to limit the present invention. In other words, in some embodiments of the present invention, these practical details are not essential. Furthermore, to simplify the drawings, some commonly used structures and components are depicted in simplified schematic form.

[0042] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative position relationship, movement status, etc. between the various components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0043] In addition, in the present invention, descriptions such as "first" and "second" are only used for descriptive purposes and do not specifically refer to the order or sequence, nor are they used to limit the present invention. They are only used to distinguish components or operations described with the same technical terms, and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in this field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0044] In order to further understand the content, features and effects of the present invention, the following embodiments are given as examples and described in detail with reference to the accompanying drawings:

[0045] See also Figures 1 to 5The utility model discloses a range hood with a PM2.5 detection function. The range hood with a PM2.5 detection function disclosed in the utility model includes a main body 1, a telescopic panel assembly 2 and a push rod assembly 4. The main body 1 includes a cover assembly 11 and a frame assembly 12. The cover assembly 11 is connected to the frame assembly 12, and a telescopic inner cavity is formed therebetween; the telescopic panel assembly 2 is slidably connected to the telescopic inner cavity, and a PM2.5 detection module 3 is provided in the installation cavity of the telescopic panel assembly 2; the push rod assembly 4 is provided on the frame assembly 12, and is used to drive the telescopic panel assembly 2 to extend or retract the telescopic inner cavity; wherein the PM2.5 detection module 3 has a first air inlet channel and a second air inlet channel. When the push rod assembly 4 drives the telescopic panel assembly 2 to extend the telescopic inner cavity, external air enters through the first air inlet channel and is detected by the PM2.5 detection module 3; when the push rod assembly 4 drives the telescopic panel assembly 2 to retract the telescopic inner cavity, external air enters through the second air inlet channel and is detected by the PM2.5 detection module 3. The range hood of the present invention has a PM2.5 detection function. When the range hood is started, the push rod assembly 4 starts and drives the telescopic panel assembly 2 to extend from the telescopic inner cavity, and the exhaust fan of the range hood is started. The exhaust fan of the range hood works and sucks the oil smoke generated by cooking; the PM2.5 detection module 3 in the installation cavity of the telescopic panel assembly 2 is started, and the external air enters through the first air inlet channel and is detected by the PM2.5 detection module 3. The PM2.5 detection module 3 detects the PM2.5 content in the air of the cooking environment in real time when the range hood is started. When it is detected that the PM2.5 content in the air of the cooking environment exceeds the standard, the control system of the range hood will increase the power of the exhaust fan to increase the suction force of the oil smoke in the cooking environment, so that the user has a healthy cooking environment. After cooking is finished, the smoke exhaust fan is turned off, and the push rod assembly 4 drives the telescopic panel assembly 2 to retract into the telescopic inner cavity. If the range hood is in standby mode, the PM2.5 detection module 3 continues to work, and the external air enters through the second air inlet channel and is detected by the PM2.5 detection module 3. That is, after the user finishes cooking and the smoke exhaust air is turned off, the PM2.5 detection module 3 continues to detect the PM2.5 content in the ambient air. When the PM2.5 content in the detected air exceeds the standard, the control system of the range hood will start the smoke exhaust fan again and make the smoke exhaust air suck the air in the environment. When the PM2.5 detection module 3 detects that the PM2.5 content in the ambient air reaches the standard value, the control system of the range hood will turn off the smoke exhaust fan again.

[0046] See also Figure 3 and Figure 55 detection module 3, so that the PM2.5 content in the air of the cooking environment can be detected in real time, so that the user can have a healthy cooking environment; when cooking is finished and the range hood is in standby mode, the exhaust fan is turned off, the telescopic panel assembly 2 is retracted into the telescopic inner cavity, and the second air inlet channel is connected to the PM2.5 detection module 3, so that the PM2.5 detection module 3 continues to detect the PM2.5 in the ambient air, which can avoid the backflow of oil smoke and ensure the quality of the ambient air.

[0047] See also Figure 1 、 Figure 3 and Figure 5 In the range hood with PM2.5 detection function of the present invention, a first detection air inlet 111 is provided on the cover plate assembly 11, and the first detection air inlet 111 is communicated with the telescopic inner cavity. A second detection air inlet 21 aligned with the PM2.5 detection module 3 is provided on the top plate of the telescopic panel assembly 2. The channel through which the second detection air inlet 21 communicates with the air inlet of the PM2.5 detection module 3 is the first air inlet channel, and the channel through which the first detection air inlet 111 communicates with the second detection air inlet 21 and the air inlet of the PM2.5 detection module 3 is the second air inlet channel. When the range hood is started and the smoke exhaust fan is working, the push rod assembly 4 drives the telescopic panel assembly 2 to extend out of the telescopic inner cavity, and the second detection air inlet 21 on the top plate of the telescopic panel assembly 2, which is aligned with the PM2.5 detection module 3, extends out from the telescopic inner cavity. At this time, external air can enter the air inlet of the PM2.5 detection module 3 through the second detection air inlet 21, and be discharged after being detected by the PM2.5 detection module 3. The channel connecting the second detection air inlet 21 to the air inlet of the PM2.5 detection module 3 is the first air inlet channel; after cooking is finished and the smoke exhaust fan is turned off, the push rod assembly 4 drives the telescopic panel assembly 2 to extend out of the telescopic inner cavity. The component 2 retracts into the telescopic inner cavity, and the second detection air inlet 21 on the top plate of the telescopic panel component 2, which is aligned with the PM2.5 detection module 3, enters the telescopic inner cavity along with the telescopic panel component 2 and is aligned with the first detection air inlet 111 provided on the cover component 11. The external air enters the air inlet of the PM2.5 detection module 3 through the first detection air inlet 111 and the second detection air inlet 21 in turn, and is discharged after being detected by the PM2.5 detection module 3. The channel connecting the first detection air inlet 111 to the second detection air inlet 21 and the air inlet of the PM2.5 detection module 3 is the second air inlet channel.

[0048] See also Figure 6 、 Figure 7 、 Figure 13 and Figure 14In other embodiments, a first detection air inlet 111 is provided on the cover assembly 11 of the range hood with a PM2.5 detection function, and a third detection air inlet 121 is provided on the bottom surface of the frame assembly 12. The first detection air inlet 111 and the third detection air inlet 121 are connected to the telescopic inner cavity, a second detection air inlet 21 aligned with the PM2.5 detection module 3 is provided on the top plate of the telescopic panel assembly 2, and a fourth detection air inlet 22 aligned with the PM2.5 detection module 3 is provided on the bottom plate of the telescopic panel assembly 2. The channel through which the second detection air inlet 21 connects to the air inlet of the PM2.5 detection module 3 is the first air inlet channel, and the channel through which the first detection air inlet 111 and the second detection air inlet 21 are sequentially connected to the air inlet of the PM2.5 detection module 3 and the channel through which the third detection air inlet 121 and the fourth detection air inlet 22 are sequentially connected to the air inlet of the PM2.5 detection module 3 together constitute the second air inlet channel. 5 detection module 3 is aligned with the PM2.5 detection module 3. The telescopic panel assembly 2 is driven by the push rod assembly 4 to retract into the telescopic inner cavity. The second detection air inlet 21 on the top plate of the telescopic panel assembly 2, which is aligned with the PM2.5 detection module 3, extends from the telescopic inner cavity. At this time, external air can enter the air inlet of the PM2.5 detection module 3 through the second detection air inlet 21, and be discharged after being detected by the PM2.5 detection module 3. The channel connecting the second detection air inlet 21 to the air inlet of the PM2.5 detection module 3 is the first air inlet channel. After cooking is finished and the smoke exhaust fan is turned off, the push rod assembly 4 drives the telescopic panel assembly 2 to retract into the telescopic inner cavity. The second detection air inlet 21 on the top plate of the telescopic panel assembly 2, which is aligned with the PM2.5 detection module 3, enters the telescopic inner cavity with the telescopic panel assembly 2 and is aligned with the first detection air inlet 111 provided on the cover assembly 11. The fourth detection air inlet 22 on the bottom plate of the component 2, which is aligned with the PM2.5 detection module 3, enters the telescopic inner cavity along with the telescopic panel assembly 2 and is aligned with the third detection air inlet 121 provided on the bottom surface of the frame assembly 12. The external air enters the air inlet at the upper end of the PM2.5 detection module 3 through the first detection air inlet 111 and the second detection air inlet 21 in turn, and the external air enters the air inlet at the lower end of the PM2.5 detection module 3 through the third detection air inlet 121 and the fourth detection air inlet 22 in turn, and is discharged after being detected by the PM2.5 detection module 3. The first detection air inlet 111 and the second detection air inlet 21 are connected in sequence to the air inlet channel of the PM2.5 detection module 3, and the third detection air inlet 121 and the fourth detection air inlet 22 are connected in sequence to the air inlet channel of the PM2.5 detection module 3, which together constitute the second air inlet channel.

[0049] See also Figures 9 to 12 and Figures 16 to 19In the above-mentioned embodiment of the range hood with PM2.5 detection function, when the telescopic panel assembly 2 extends or retracts into the telescopic inner cavity, the fourth detection air inlet 22 is always located in the telescopic inner cavity; it also includes a sealing assembly, which includes a detection hole switch assembly 5 and a sealing member 6, which is used to seal the telescopic inner cavity when the telescopic panel assembly 2 extends into the telescopic inner cavity, and the detection hole switch assembly 5 seals the third detection air inlet 121. It is easy to know that the telescopic panel assembly 2 can enter and exit the telescopic inner cavity, and there is no seal between the telescopic panel assembly 2 and the opening of the telescopic inner cavity. When the user is cooking and the telescopic panel assembly 2 is extended from the telescopic inner cavity, the oil smoke generated by the user's cooking will enter the extended inner cavity through the gap between the telescopic panel assembly 2 and the opening of the telescopic inner cavity, and the oil smoke will pollute the telescopic inner cavity. Moreover, since the fourth detection air inlet 22 is always located in the telescopic inner cavity, the oil smoke entering the telescopic inner cavity will also enter the PM2.5 detection module 3 through the fourth detection air inlet 22, affecting the detection result of the PM2.5 detection module 3; in addition, since the third detection air inlet 121 is provided on the bottom surface of the frame assembly 12, when the user is cooking and the telescopic panel assembly 2 is extended from the telescopic inner cavity, the bottom surface of the frame assembly 12 faces the cooking utensils, and the oil smoke generated by cooking will enter the telescopic inner cavity through the third detection air inlet 121, pollute the telescopic inner cavity, and enter the PM2.5 detection module 3 through the fourth detection air inlet 22, affecting the detection result of the PM2.5 detection module 3. In this embodiment, the range hood with PM2.5 detection function also includes a sealing assembly. When the telescopic panel assembly 2 extends out of the telescopic inner cavity, the seal 6 seals the telescopic inner cavity to prevent oil smoke from entering the telescopic inner cavity through the gap between the telescopic panel assembly 2 and the opening of the telescopic inner cavity. The detection hole switch assembly 5 seals the third detection air inlet 121 to prevent oil smoke from entering the telescopic inner cavity through the third detection air inlet 121. This can ensure that when the range hood is working and the telescopic panel assembly 2 extends out of the telescopic inner cavity, the PM2.5 detection module 3 detects air purified by the smoke exhaust fan, thereby ensuring the accuracy of the detection data of the PM2.5 detection module 3.

[0050] See also Figure 6 、 Figures 8 to 12In the range hood with PM2.5 detection function in the above embodiment, the sealing assembly includes a detection hole switch assembly 5, which includes a switch seat 51, a switch slider 52 and a slider spring 53. The switch seat 51 is arranged on the bottom surface of the frame assembly 12, and is provided with a avoidance opening corresponding to the third detection air inlet 121. The switch slider 52 is slidably connected to the switch seat 51 for covering or opening the avoidance opening. One end of the slider spring 53 is connected to the switch slider 52, and the other end is fixed in the frame assembly 12. The switch slider 52 is provided with a slider starting portion 521, and the slider starting portion 521 is aligned with the moving direction of the telescopic panel assembly 2. When the telescopic panel assembly 2 moves into the telescopic inner cavity, the moving direction of the telescopic panel assembly 2 is aligned with the slider starting portion 521 of the switch slider 52. When the rear side wall of the telescopic panel assembly 2 contacts the slider starting portion 521, the telescopic panel assembly 2 begins to push the switch slider 52 to move away from the user side. The switch slider 52 moves along the switch seat 51 and begins to open the avoidance port. In the process of the switch slider 52 moving away from the user side, the switch slider 52 squeezes the slider spring 53 and compresses the slider spring 53. After the telescopic panel assembly 2 completely enters the telescopic inner cavity, the avoidance port is completely opened, and external air can enter and contact the third detection air inlet 121 through the third detection air inlet. The air flows through the avoidance opening corresponding to the air inlet 121, and then enters the fourth detection air inlet 22 on the bottom plate of the telescopic panel assembly 2 aligned with the PM2.5 detection module 3 through the avoidance opening, and enters the PM2.5 detection module 3 through the fourth detection air inlet 22; when the telescopic panel assembly 2 is extended from the telescopic panel assembly 2, the telescopic panel assembly 2 moves toward the user side, the slider spring 53 begins to reset and pushes the switch slider 52 to move toward the user side, the switch slider 52 moves along the switch seat 51 and begins to block the avoidance opening. When the telescopic panel assembly 2 is completely extended from the telescopic inner cavity, the switch slider 52 completely blocks the avoidance opening. At this time, external air cannot enter the telescopic inner cavity through the third detection air inlet 121.

[0051] See also Figure 13 、 Figures 15 to 19In other embodiments, the detection hole switch assembly 5 adopts another scheme. In this scheme, the detection hole switch assembly 5 includes a switch bracket 54, and the switch bracket 54 is provided with a rotating shaft 541 and a rotation starting part 542. The rotating shaft 541 is rotatably connected to the telescopic inner cavity, and the rotation starting part 542 is provided above the rotating shaft 541 and is aligned with the moving direction of the telescopic panel assembly 2; the rotation starting part 542 is used to be driven and rotate the rotating shaft 541 to open or close the third detection air inlet 121. When the telescopic panel assembly 2 moves into the telescopic inner cavity, the moving direction of the telescopic panel assembly 2 is aligned with the rotation starting part 542. When the rear side wall of the telescopic panel assembly 2 contacts the rotation starting part 542, when the telescopic panel assembly 2 continues to move away from the user side, the rear side wall of the telescopic panel assembly 2 will squeeze the rotation starting part 542, the rotating shaft 541 rotates, and the switch bracket 54 rotates with the rotating shaft 541 and tilts upward, so that the third detection air inlet 121 is opened. After the telescopic panel assembly 2 completely enters the telescopic inner cavity, the switch bracket 54 tilts upward to the maximum extent, and the outside air can enter the bottom plate of the telescopic panel assembly 2 through the third detection air inlet 121. The PM2.5 detection module 3 is aligned with the fourth detection air inlet 22, and enters the PM2.5 detection module 3 through the fourth detection air inlet 22; when the telescopic panel assembly 2 is extended from the telescopic panel assembly 2, the telescopic panel assembly 2 moves toward the user side, and the rear wall of the telescopic panel assembly 2 begins to leave the rotation starting part 542. Under the action of the gravity of the switch bracket 54, the raised end of the switch bracket 54 begins to descend and drives the rotation starting part 542 to rotate. When the telescopic panel assembly 2 is completely extended from the telescopic inner cavity, the switch bracket 54 resets and covers the third detection air inlet 121. At this time, external air cannot enter the telescopic inner cavity through the third detection air inlet 121.

[0052] See also Figure 13 、 Figures 16 to 19 In the embodiment of the rotation detection assembly 5 described above, a sponge sealing frame 1211 is provided on the bottom surface of the telescopic inner cavity, surrounding the third detection air inlet 121. The switch bracket 54 is positioned on the upper end surface of the sponge sealing frame 1211, sealing the third detection air inlet 121. When the telescopic panel assembly 2 is fully extended from the telescopic inner cavity, the switch bracket 54 returns to its original position and presses against the sponge sealing frame 1211, thereby tightly sealing the third detection air inlet 121 and preventing external space from entering the telescopic inner cavity through the gap between the switch bracket 54 and the bottom surface of the telescopic inner cavity.

[0053] See also Figure 13 、 Figures 15 to 19In the aforementioned embodiment of the rotation detection assembly 5, the sealing assembly further includes a magnet 55, the height of which matches the height of the sponge sealing frame 1211. The switch bracket 54 is a metal component. When the telescopic panel assembly 2 extends out of the telescopic cavity, the magnet 55 attracts the switch bracket 54, causing it to return to its original position and press against the sponge sealing frame 1211. The magnetic attraction of the magnet 55 on the switch bracket 54 enables the switch bracket 54 to tightly seal the third detection air inlet 121, preventing external space from entering the telescopic cavity through the gap between the switch bracket 54 and the bottom surface of the telescopic cavity.

[0054] See also Figures 1 to 19 In the range hood with PM2.5 detection function of the present invention, the seal 6 includes a first seal 61 and a second seal 62. The first seal 61 and the second seal 62 are respectively arranged on the top plate and the bottom plate of the telescopic panel assembly 2. The second detection air inlet 21 is located in front of the first seal 61, and the fourth detection air inlet 22 is located behind the second seal 62. When the telescopic panel assembly 2 extends out of the telescopic inner cavity, the first seal 61 and the second seal 62 seal the opening of the telescopic inner cavity, the second detection air inlet 21 is exposed from the telescopic inner cavity, and the fourth detection air inlet 22 is located in the telescopic inner cavity. The structural part of the seal of the second patent is included in the specification. When the telescopic panel assembly 2 extends out of the telescopic inner cavity, the first seal 61 is squeezed between the upper edge of the telescopic inner cavity and the top plate of the telescopic panel assembly 2, and the second seal 62 is squeezed between the lower edge of the telescopic inner cavity and the bottom plate of the telescopic panel assembly 2, sealing the gap between the telescopic inner cavity and the telescopic panel assembly 2. At this time, the fourth detection air inlet 22 is sealed in the telescopic inner cavity, and the third detection air inlet 121 is closed by the rotation detection assembly 5. The oil smoke cannot enter the telescopic inner cavity through the third detection air inlet 121, and will not affect the detection result of the PM2.5 detection module 3.

[0055] See also Figure 1 、 Figure 6 and Figure 13 The range hood with PM2.5 detection function of the present invention includes a main body 1 which further includes a bellows assembly 13, a side baffle 14 and a back plate 15. The bellows assembly 13 is connected to the cover assembly 11. A smoke exhaust fan is provided in the bellows assembly 13. The side baffles 14 are connected to both sides of the frame assembly 12, and the back plate 15 is connected between the baffles 14 on both sides.

[0056] See also Figures 2 to 5 、 Figures 9 to 12 、 Figures 6 to 19The present invention also discloses a cabinet, which includes a cabinet body 7. The cabinet body 7 is provided with an installation cavity, which is used to install the range hood with PM2.5 detection function of any of the above-mentioned embodiments. The cabinet body 7 is also provided with a cabinet door 71, which is used to open or close the installation cavity. The cabinet door 71 is provided with a fifth detection air inlet 711 for allowing the external space to enter the installation cavity. When the push rod assembly 4 drives the telescopic panel assembly 2 to retract the telescopic inner cavity, the external air enters the installation cavity through the fifth detection air inlet 711, and the air in the installation cavity is taken in through the second air inlet channel and detected by the PM2.5 detection module 3. After the range hood is installed in the installation cavity of the cabinet body 7, when the cabinet door 71 is closed, the range hood is closed in the cabinet body 7. At this time, if the external air cannot circulate with the air in the installation cavity, when the range hood is on standby and the PM2.5 detection module 3 is started, the PM2.5 detection module 3 only detects the air in the installation cavity of the cabinet body 7. The air quality in the installation cavity of the cabinet body 7 cannot represent the ambient air quality; for this reason, a fifth detection air inlet 711 is provided on the cabinet door 71, and the fifth detection air inlet 711 is connected to the installation cavity. The external air can circulate with the air in the installation cavity through the fifth detection air inlet 711. When the range hood is working, the push rod assembly 4 drives the telescopic panel assembly 2 to extend out of the telescopic inner cavity, and the second detection air inlet 21 on the top plate of the telescopic panel assembly 2, which is aligned with the PM2.5 detection module 3, is located outside the telescopic inner cavity, and the first air inlet channel is connected to the PM2.5 detection module 3; when the smoke exhaust fan is turned off and the push rod assembly 4 drives the telescopic panel assembly 2 to retract into the telescopic inner cavity, if the range hood is in standby mode, the PM2.5 detection module 3 continues to start, and the second air inlet channel is connected to the PM2.5 detection module 3. The external air enters the installation cavity through the fifth detection air inlet 711 and circulates with the air in the installation cavity. At this time, the air quality detected by the M2.5 detection module 3 can represent the ambient air quality. When the PM2.5 content value detected by the PM2.5 detection module 3 exceeds the standard, the control system of the range hood starts the smoke exhaust fan again and causes the smoke exhaust fan to draw air in the environment.

[0057] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements or improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A range hood with PM2.5 detection function, characterized in that: include: A main body (1) comprises a cover assembly (11) and a frame assembly (12), wherein the cover assembly (11) is connected to the frame assembly (12), and a telescopic inner cavity is formed therebetween; A telescopic panel assembly (2) is slidably connected to the telescopic inner cavity, and a PM2.5 detection module (3) is provided in the installation cavity of the telescopic panel assembly (2); a push rod assembly (4), which is provided on the frame assembly (12) and is used to drive the telescopic panel assembly (2) to extend or retract into the telescopic inner cavity; The PM2.5 detection module (3) has a first air inlet channel and a second air inlet channel. When the push rod assembly (4) drives the telescopic panel assembly (2) to extend out of the telescopic inner cavity, external air enters through the first air inlet channel and is detected by the PM2.5 detection module (3); when the push rod assembly (4) drives the telescopic panel assembly (2) to retract into the telescopic inner cavity, external air enters through the second air inlet channel and is detected by the PM2.5 detection module (3).

2. The range hood with PM2.5 detection function according to claim 1, characterized in that: The cover plate assembly (11) is provided with a first detection air inlet (111), the first detection air inlet (111) is connected to the telescopic inner cavity, the top plate of the telescopic panel assembly (2) is provided with a second detection air inlet (21) aligned with the PM2.5 detection module (3), the channel through which the second detection air inlet (21) is connected to the air inlet of the PM2.5 detection module (3) is the first air inlet channel, and the channel through which the first detection air inlet (111) is connected to the second detection air inlet (21) and the air inlet of the PM2.5 detection module (3) is the second air inlet channel.

3. The range hood with PM2.5 detection function according to claim 1, characterized in that: The cover assembly (11) is provided with a first detection air inlet (111), the bottom surface of the frame assembly (12) is provided with a third detection air inlet (121), the first detection air inlet (111) and the third detection air inlet (121) are in communication with the telescopic inner cavity, the top plate of the telescopic panel assembly (2) is provided with a second detection air inlet (21) aligned with the PM2.5 detection module (3), and the bottom plate of the telescopic panel assembly (2) is provided with a third detection air inlet (21) aligned with the PM2.5 detection module (3). Four detection air inlets (22), the channel through which the second detection air inlet (21) is connected to the air inlet of the PM2.5 detection module (3) is the first air inlet channel, the channel through which the first detection air inlet (111) and the second detection air inlet (21) are connected in sequence to the air inlet of the PM2.5 detection module (3) and the channel through which the third detection air inlet (121) and the fourth detection air inlet (22) are connected in sequence to the air inlet of the PM2.5 detection module (3) together constitute the second air inlet channel.

4. The range hood with PM2.5 detection function according to claim 3, characterized in that: When the telescopic panel assembly (2) extends out of or retracts into the telescopic inner cavity, the fourth detection air inlet (22) is always located in the telescopic inner cavity; and a sealing assembly is also included, wherein the sealing assembly includes a detection hole switch assembly (5) and a sealing member (6), and is used for, when the telescopic panel assembly (2) extends out of the telescopic inner cavity, the sealing member (6) seals the telescopic inner cavity, and the detection hole switch assembly (5) seals the third detection air inlet (121).

5. The range hood with PM2.5 detection function according to claim 4, characterized in that: The sealing assembly comprises a detection hole switch assembly (5), the detection hole switch assembly (5) comprising a switch seat (51), a switch slider (52) and a slider spring (53), the switch seat (51) being arranged on the bottom surface of the frame assembly (12), and being provided with a avoidance opening corresponding to the third detection air inlet (121), the switch slider (52) being slidably connected to the switch seat (51) for covering or opening the avoidance opening, one end of the slider spring (53) being connected to the switch slider (52), and the other end being fixed in the frame assembly (12), the switch slider (52) being provided with a slider start portion (521), and the slider start portion (521) being aligned with the moving direction of the telescopic panel assembly (2).

6. The range hood with PM2.5 detection function according to claim 4, characterized in that: The detection hole switch assembly (5) comprises a switch bracket (54), the switch bracket (54) being provided with a rotating shaft (541) and a rotation starting portion (542), the rotating shaft (541) being rotatably connected to the telescopic inner cavity, the rotation starting portion (542) being provided above the rotating shaft (541) and aligned with the moving direction of the telescopic panel assembly (2); the rotation starting portion (542) being driven and causing the rotating shaft (541) to rotate so as to open or close the third detection air inlet (121).

7. The range hood with PM2.5 detection function according to claim 6, characterized in that: The bottom surface of the telescopic inner cavity is provided with a sponge sealing frame (1211) surrounding the third detection air inlet (121); the switch bracket (54) is placed on the upper end surface of the sponge sealing frame (1211) and seals the third detection air inlet (121).

8. The range hood with PM2.5 detection function according to claim 7, characterized in that: The sealing component further comprises a magnet (55), the height of the magnet being adapted to the height of the sponge sealing frame (1211), and the switch bracket (54) being a metal part.

9. The range hood with PM2.5 detection function according to claim 4, characterized in that: The sealing member (6) comprises a first sealing member (61) and a second sealing member (62), wherein the first sealing member (61) and the second sealing member (62) are respectively arranged on the top plate and the bottom plate of the telescopic panel assembly (2), the second detection air inlet (21) is located on the front side of the first sealing member (61), and the fourth detection air inlet (22) is located on the rear side of the second sealing member (62); when the telescopic panel assembly (2) extends out of the telescopic inner cavity, the first sealing member (61) and the second sealing member (62) seal the opening of the telescopic inner cavity, the second detection air inlet (21) is exposed from the telescopic inner cavity, and the fourth detection air inlet (22) is located in the telescopic inner cavity.

10. A cabinet, characterized in that: The invention comprises a cabinet body (7), wherein the cabinet body (7) is provided with an installation cavity, wherein the installation cavity is used to install the range hood with PM2.5 detection function according to any one of claims 1 to 9, and the cabinet body (7) is further provided with a cabinet door (71), wherein the cabinet door (71) is used to open or close the installation cavity, and wherein the cabinet door (71) is provided with a fifth detection air inlet (711) for allowing external space to enter the installation cavity, and when the push rod assembly (4) drives the telescopic panel assembly (2) to retract the telescopic inner cavity, external air enters the installation cavity through the fifth detection air inlet (711), and the air in the installation cavity is taken in through the second air inlet channel and detected by the PM2.5 detection module (3).

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