Sensor assembly and range hood with same

Abstract

The utility model relates to the technical field of range hoods, and discloses a sensor assembly and a range hood with the same, the sensor assembly comprises a sensor box, the sensor box is provided with a mounting cavity, the mounting cavity is communicated with external air, at least a first mounting area is arranged in the mounting cavity, and air entering the mounting cavity at least flows through the first mounting area; the sensor seat comprises a fixing support and a damping seat, and the damping seat is installed in the first installation area through the fixing support; the methane sensor is mounted in the damping seat; compared with the prior art, the sensor assembly and the sensor seat comprise the fixing support and the shock-absorbing seat, the methane sensor is installed on the shock-absorbing seat, then the shock-absorbing seat is fixed in the installation cavity of the sensor box through the fixing support, the shock-absorbing seat can play a role in protecting the methane sensor, and the possibility that the methane sensor is damaged when a range hood runs is reduced. The influence of the vibration of the smoke exhaust fan on the methane sensor reduces the failure probability of the methane sensor.

Description

Technical Field

[0001] This utility model relates to the field of kitchen appliance technology, specifically to a sensor assembly and a range hood having the same. Background Technology

[0002] When applied to range hoods, methane sensors assist in detecting gas leaks, ensuring user cooking safety. The methane sensor's detection head includes a base with several supports. Some supports have heating wires leading out, while others have concentration detection wires. These detection wires connect to a semiconductor sensor plate, which houses a heating element. The heating element is soldered to the heating wires. Both the heating wires and the concentration detection wires are very thin. When the methane sensor is used in a range hood, the exhaust fan generates vibrations. These vibrations cause physical stress on the methane sensor, leading to loosening or cracking of the solder joints between the heating element and the heating wires, ultimately causing the methane sensor to malfunction. Utility Model Content

[0003] The purpose of this invention is to provide a sensor assembly and a smoke hood having the same, which solves the aforementioned technical problems.

[0004] A sensor assembly for a range hood, comprising:

[0005] The sensor box has a mounting cavity that is connected to the outside air. The mounting cavity has at least a first mounting area, and the air entering the mounting cavity flows through at least the first mounting area.

[0006] The sensor mount includes a mounting bracket and a shock absorber, the mounting bracket mounting the shock absorber in a first mounting area;

[0007] Methane sensor, the methane sensor is installed in the shock-absorbing base.

[0008] According to one embodiment of the present invention, there are two shock absorber seats, each of which is provided with a mounting groove. The two ends of the methane sensor extend into the mounting groove and are supported by the mounting groove.

[0009] According to one embodiment of the present invention, a limiting block is provided on the top surface of the mounting groove. When the methane sensor is installed in the mounting groove, the limiting block squeezes the methane sensor.

[0010] According to one embodiment of the present invention, the shock absorber seat is further provided with a deformation groove, which penetrates the bottom surface of the shock absorber seat downwards and communicates with the mounting groove upwards.

[0011] According to one embodiment of the present invention, the fixed bracket includes a fixing part and a limiting part. The fixing part is connected to the base plate of the first installation area. The fixing part has extension parts extending upward at both ends on the side near the shock absorber seat. The height of the extension parts is adapted to the height of the shock absorber seat. The upper edge of the extension parts extends into the limiting part in the direction of the shock absorber seat. The limiting part acts on the shock absorber seat on the corresponding side to fix the shock absorber seat in the first installation area.

[0012] According to one embodiment of the present invention, the mounting cavity further includes a second mounting area, in which a sensor control board is installed. The sensor control board integrates a buzzer and has wiring terminals leading out, which are connected to a methane sensor via connecting wires.

[0013] According to one embodiment of the present invention, a carbon monoxide sensor is provided on the sensor control board, and the air entering the mounting cavity flows through the first mounting area and the second mounting area.

[0014] According to one embodiment of the present invention, the mounting cavity further includes a third mounting area, an air inlet chamber, and an air outlet chamber. A PM2.5 detection module is provided in the third mounting area. The PM2.5 detection module has an air inlet side and an air outlet side. The air inlet side is located in the air inlet chamber, and the air outlet side is located in the air outlet chamber. The air inlet chamber and the air outlet chamber are connected by gas through the PM2.5 detection module. The airflow path of the air outlet chamber passes through the first mounting area and the second mounting area.

[0015] According to one embodiment of the present invention, it further includes a sealing element, which is disposed around the upper edge of the sensor box, and the sealing element is provided with at least one clearance opening corresponding to the air inlet chamber and the air outlet chamber.

[0016] According to one embodiment of the present invention, the device includes a main body of a range hood, the main body of the range hood having an electronic control cavity, a sensor box fixedly connected to the top plate of the electronic control cavity, and a detection hole provided on the top plate of the electronic control cavity, the detection hole communicating with the mounting cavity of the sensor box.

[0017] Compared with the prior art, the sensor assembly of this utility model has the following advantages:

[0018] The sensor assembly of this utility model includes a sensor base comprising a fixed bracket and a shock-absorbing base. The methane sensor is installed on the shock-absorbing base, and then the fixed bracket is used to fix the shock-absorbing base into the mounting cavity of the sensor box. The shock-absorbing base can protect the methane sensor, reduce the impact of the exhaust fan vibration on the methane sensor during the operation of the flue gas fan, and reduce the failure probability of the methane sensor. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the sensor assembly of this utility model;

[0020] Figure 2This is a schematic diagram of the sensor assembly of this utility model after the seal is removed;

[0021] Figure 3 This is a schematic diagram of the sensor assembly of this utility model after removing the sensor control board, buzzer, carbon monoxide sensor and PM2.5 detection module.

[0022] Figure 4 This is a schematic diagram of the sensor box of the sensor assembly of this utility model;

[0023] Figure 5 This is a schematic diagram of the shock-absorbing base of the sensor assembly of this utility model;

[0024] Figure 6 A schematic diagram of the structure of a smoke hood having the sensor assembly of this utility model;

[0025] Figure 7 A cross-sectional view of a smoke hood having the sensor assembly of this utility model;

[0026] In the diagram: 1. Sensor box, 11. First mounting area, 12. Second mounting area, 13. Third mounting area, 14. Air inlet chamber, 15. Air outlet chamber, 2. Sensor base, 21. Fixing bracket, 211. Fixing part, 212. Limiting part, 213. Extension part, 22. Vibration damping seat, 221. Mounting groove, 222. Limiting block, 223. Deformation groove, 3. Methane sensor, 4. Sensor control board, 5. Buzzer, 6. Carbon monoxide sensor, 7. PM2.5 detection module, 8. Sealing component, 9. Main body of the range hood, 91. Detection hole.

[0027] The implementation and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0028] The following drawings will disclose several embodiments of this utility model. For clarity, many practical details will be described in the following description. However, it should be understood that these practical details should not be used to limit this utility model. That is, in some embodiments of this utility model, these practical details are not essential. In addition, for the sake of simplicity, some conventional structures and components will be shown in the drawings in a simple schematic manner.

[0029] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0030] Furthermore, in this utility model, the use of terms such as "first" and "second" is for descriptive purposes only and does not specifically refer to any order or sequence, nor is it intended to limit the utility model. They are merely used to distinguish components or operations described with the same technical terms and should not be construed as indicating or implying their relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the technical solutions of various embodiments can be combined with each other, but only if they are feasible for those skilled in the art. If a combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0031] To further understand the content, features, and effects of this utility model, the following embodiments are provided, and detailed descriptions are given below in conjunction with the accompanying drawings:

[0032] Please see Figures 1 to 5 This utility model discloses a sensor assembly for use in a range hood. The assembly includes a sensor box 1, a sensor base 2, and a methane sensor 3. The sensor box 1 has a mounting cavity communicating with external air. At least one first mounting area 11 is provided within the mounting cavity, and air entering the mounting cavity flows through at least the first mounting area 11. The sensor base 2 includes a fixing bracket 21 and a shock-absorbing base 22. The fixing bracket 21 mounts the shock-absorbing base 22 to the first mounting area 11. The methane sensor 3 is mounted within the shock-absorbing base 22. The sensor base 2 of this utility model, with its fixing bracket 21 and shock-absorbing base 22, mounts the methane sensor 3 onto the shock-absorbing base 22. The fixing bracket 21 then secures the shock-absorbing base 22 to the mounting cavity of the sensor box 1. The shock-absorbing base 22 protects the methane sensor 3, reducing the impact of exhaust fan vibration on the methane sensor 3 during range hood operation and lowering the probability of sensor 3 failure.

[0033] When the sensor assembly of this utility model is applied to a range hood, it is installed inside the electrical control cavity of the range hood. The installation cavity of the sensor box 1 is connected to the air outside the range hood. When the air outside the range hood enters the installation cavity of the sensor box 1, it flows through at least the first installation area 11. When it flows through the first installation area 11, it is detected by the methane sensor 3. The methane sensor 3 can determine whether there is methane in the air of the kitchen space, thereby determining whether there is a gas leak, which can ensure cooking safety.

[0034] The sensor assembly of this utility model has a shock-absorbing base 22 made of a material that can undergo elastic deformation, such as foam or shock-absorbing rubber.

[0035] Please see Figure 2 , Figure 3 and Figure 5 The sensor assembly of this invention includes two shock-absorbing seats 22, each with a mounting groove 221. Both ends of the methane sensor 3 extend into and are supported by the mounting groove 221. In practical applications, the width of the mounting groove 221 is adapted to the width of the methane sensor 3, ensuring that the methane sensor 3 will not wobble within the mounting groove 221 after installation.

[0036] As shown in the table below:

[0037]

[0038] The methane sensor 3 has a sensor circuit board and a detection head. The detection head is a tubular component for detecting methane and is mounted on the sensor circuit board. The sensor assembly of this invention is provided with two shock-absorbing seats 22. The two shock-absorbing seats 22 support the methane sensor 3 from both ends of the sensor circuit board, which can prevent the shock-absorbing seats 22 from squeezing the detection head of the methane sensor 3.

[0039] Please see Figure 5 In this invention, a limiting block 222 is provided on the top surface of the mounting groove 221 of the sensor assembly. When the methane sensor 3 is installed in the mounting groove 221, the limiting block 222 compresses the methane sensor 3. The limiting block 222 limits the methane sensor 3 from above the portion of the methane sensor 3 supported in the mounting groove 221, further ensuring the stability of the methane sensor 3 within the mounting groove 221.

[0040] Please see Figure 5 In the sensor assembly of this utility model, the shock absorber base 22 is also provided with a deformation groove 223. The deformation groove 223 penetrates the bottom surface of the shock absorber base 22 downwards and communicates with the mounting groove 221 upwards. Adding the deformation groove 223 can improve the deformation effect of the shock absorber base 22 and ensure the shock absorption effect.

[0041] Please see Figure 5 In the sensor assembly of this invention, the mounting groove 221 is arranged along the width / thickness direction of the shock absorber 22, and the deformation groove 223 is arranged along the thickness / width direction of the shock absorber 22. In the illustrated embodiment, if the front-to-back direction of the shock absorber 22 is defined as the width direction and the left-to-right direction as the thickness direction, the mounting groove 221 is arranged along the width direction and the deformation groove 223 is arranged along the thickness direction. This can increase the shock absorption effect of the shock absorber 22 without affecting its strength.

[0042] Please see Figure 2 and Figure 3The sensor assembly of this utility model includes a fixing bracket 21 comprising a fixing part 211 and a limiting part 212. The fixing part 211 is connected to the base plate of the first mounting area 11. The fixing part 211 has extension parts 213 extending upward from both ends on the side near the shock absorber 22. The height of the extension parts 213 is adapted to the height of the shock absorber 22. The upper edge of the extension parts 213 extends into the limiting part 212 in the direction of the shock absorber 22. The limiting part 212 acts on the shock absorber 22 on the corresponding side to fix the shock absorber 22 within the first mounting area 11. When assembling the sensor assembly, insert both ends of the methane sensor 3 into the mounting slots 221 of a shock absorber 22, then place the two shock absorbers 22 on the base plate of the first mounting area 11. Next, place the fixing bracket 21 from top to bottom on the base plate of the first mounting area 11, and make the two limiting parts 212 of the fixing bracket 21 act on the upper surface of the corresponding shock absorber 22. Then, fix the fixing part 211 to the base plate of the first mounting area 11 by the fixing member, thus realizing the connection of the methane sensor 3 in the first mounting area 11.

[0043] Please see Figures 2 to 4 The sensor assembly of this invention includes a second mounting area 12 within the mounting cavity. A sensor control board 4 is installed in the second mounting area 12, and a buzzer 5 is integrated on the sensor control board 4. The sensor control board 4 has terminals leading out and is connected to a methane sensor 3 via a connecting wire. The sensor control board 4 can both receive signals from the methane sensor 3 and supply power to the methane sensor 3. After the sensor assembly is applied to a flue gas hood, during operation, the methane sensor 3 detects the methane concentration in the air to determine if there is a gas leak. The methane sensor 3 transmits the detection information to the sensor control board 4. When the detected value exceeds the limit, the sensor control board 4 activates the buzzer 5 to sound an alarm.

[0044] Please see Figure 2 The sensor assembly of this invention includes a carbon monoxide sensor 6 mounted on the sensor control board 4. Air entering the mounting cavity flows through the first mounting area 11 and the second mounting area 12. When air from outside the range hood enters the mounting cavity of the sensor box 1, it flows through at least the first mounting area 11 and the second mounting area 12. While flowing through the first mounting area 11, it is detected by the methane sensor 3, which determines whether methane is present in the kitchen air, thus indicating a potential gas leak. While flowing through the second mounting area 12, it is detected by the carbon monoxide sensor 6, which determines whether carbon monoxide is present in the kitchen air, thus indicating whether the gas is burning completely, ensuring cooking safety. Both the methane sensor 3 and the carbon monoxide sensor 6 transmit their detection information to the sensor control board 4. When the detected value exceeds the limit, the sensor control board 4 activates the buzzer 5 to sound an alarm.

[0045] Please see Figure 2 and Figure 4 The sensor assembly of this invention includes a third mounting area 13, an air inlet chamber 14, and an exhaust chamber 15. A PM2.5 detection module 7 is installed in the third mounting area 13. The PM2.5 detection module 7 has an air inlet side and an exhaust side. The air inlet side is located in the air inlet chamber 14, and the exhaust side is located in the exhaust chamber 15. The air inlet chamber 14 and the exhaust chamber 15 are connected by gas through the PM2.5 detection module 7. The airflow path in the exhaust chamber 15 passes through the first mounting area 11 and the second mounting area 12. When the PM2.5 detection module 7 is activated, outside air enters the air inlet chamber 14, is detected by the PM2.5 detection module 7, and is then discharged from the exhaust side of the PM2.5 detection module 7 into the exhaust chamber 15. During the airflow process in the exhaust chamber 15, it passes through the first mounting area 11 and the second mounting area 12, and is detected by the methane sensor 3 and the carbon monoxide sensor 6, respectively. The PM2.5 detection module 7 is used to detect the PM2.5 content in the air. This indicator is used to judge the purification effect of the range hood on cooking fumes, so that users can adjust the operating power of the range hood's exhaust fan according to the detection results, or the range hood's control module can automatically adjust the operating power of the range hood's exhaust fan according to the detection results of the PM2.5 detection module 7.

[0046] Please see Figure 1 The sensor assembly of this utility model also includes a sealing member 8, which is arranged around the upper edge of the sensor box 1. The sealing member 8 is provided with at least one clearance opening corresponding to the air inlet chamber 14 and the air outlet chamber 15. When the sensor assembly is applied to the range hood, the sensor box 1 is installed on the top plate of the electrical control chamber of the range hood. The seal 8 is pressed between the top plate of the electrical control chamber and the upper edge of the sensor box 1. When the PM2.5 detection module 7 is activated, the small fan inside the PM2.5 detection module 7 draws air from the air inlet chamber 14, creating a negative pressure inside the air inlet chamber 14. Air from outside the electrical control chamber enters the air inlet chamber 14 through the clearance port aligned with the air inlet chamber 14. The air drawn by the PM2.5 detection module 7 is discharged into the exhaust chamber 15 through the exhaust side of the PM2.5 detection module 7, creating a positive pressure inside the exhaust chamber 15. As the air in the exhaust chamber 15 is discharged through the clearance port corresponding to the exhaust chamber 15, it flows through the first installation area 11 and the second installation area 12 and is detected by the methane sensor 3 and the carbon monoxide sensor 6. A seal 8 is provided to ensure that the air inlet chamber 14 and the air outlet chamber 15 of the sensor box 1 can only be connected by gas through the PM2.5 detection module 7.

[0047] Please see Figure 6 and Figure 7This utility model also discloses a range hood. The range hood disclosed in this utility model adopts the above-mentioned sensor assembly, including a range hood body 9. The range hood body 9 has an electrical control cavity. A sensor box 1 is fixedly connected to the top plate of the electrical control cavity. The top plate of the electrical control cavity is provided with a detection hole 91, which communicates with the mounting cavity of the sensor box 1. When the range hood has a PM2.5 detection module 7, the mounting cavity of the sensor box 1 is divided into an air inlet chamber 14 and an air outlet chamber 15. One part of the detection hole 91 is aligned with the air inlet chamber 14 as a detection air inlet hole, and the other part is aligned with the air outlet chamber 15 as a detection air outlet hole. When the PM2.5 detection module 7 is activated, air from outside the control chamber enters the air inlet chamber 14 through the detection air inlet hole. It enters the PM2.5 detection module 7 from the air inlet side, is detected, and then exits through the exhaust side of the PM2.5 detection module 7 and enters the exhaust chamber 15. When it is discharged through the exhaust chamber 15, it is detected by the methane sensor 3 and the carbon monoxide sensor 6. When methane and / or carbon monoxide exceed the standard, the buzzer 5 sounds an alarm.

[0048] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions or improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A sensor assembly for a range hood, characterized in that, include: The sensor box (1) is provided with a mounting cavity, which is in communication with the outside air. The mounting cavity is provided with at least a first mounting area (11), and the air entering the mounting cavity flows through at least the first mounting area (11). The sensor base (2) includes a fixed bracket (21) and a shock absorber (22), wherein the fixed bracket (21) mounts the shock absorber (22) in the first mounting area (11); A methane sensor (3) is installed inside the shock absorber (22).

2. The sensor assembly according to claim 1, characterized in that, There are two shock absorber seats (22), and each shock absorber seat (22) is provided with a mounting groove (221). The two ends of the methane sensor (3) extend into the mounting groove (221) and are supported by the mounting groove (221).

3. The sensor assembly according to claim 2, characterized in that, A limiting block (222) is provided on the top surface of the mounting groove (221). When the methane sensor (3) is installed in the mounting groove (221), the limiting block (222) squeezes the methane sensor (3).

4. The sensor assembly according to claim 2, characterized in that, The shock absorber seat (22) is also provided with a deformation groove (223), which penetrates the bottom surface of the shock absorber seat (22) downward and communicates with the mounting groove (221) upward.

5. The sensor assembly according to claim 2, characterized in that, The fixed bracket (21) includes a fixing part (211) and a limiting part (212). The fixing part (211) is connected to the base plate of the first installation area (11). The fixing part (211) has extension parts (213) extending upward from both ends on the side of the fixing part (211) near the shock absorber (22). The height of the extension parts (213) is adapted to the height of the shock absorber (22). The upper edge of the extension parts (213) extends into the limiting part (212) in the direction of the shock absorber (22). The limiting part (212) acts on the shock absorber (22) on the corresponding side to fix the shock absorber (22) in the first installation area (11).

6. The sensor assembly according to claim 1, characterized in that, The mounting cavity also includes a second mounting area (12), in which a sensor control board (4) is installed. The sensor control board (4) integrates a buzzer (5). The sensor control board (4) has wiring terminals leading out and is connected to the methane sensor (3) via a connecting wire.

7. The sensor assembly according to claim 6, characterized in that, The sensor control board (4) is equipped with a carbon monoxide sensor (6), and the air entering the mounting cavity flows through the first mounting area (11) and the second mounting area (12).

8. The sensor assembly according to claim 7, characterized in that, The mounting cavity further includes a third mounting area (13), an air inlet chamber (14), and an air outlet chamber (15). The third mounting area (13) is equipped with a PM2.5 detection module (7). The PM2.5 detection module (7) has an air inlet side and an air outlet side. The air inlet side is located in the air inlet chamber (14), and the air outlet side is located in the air outlet chamber (15). The air inlet chamber (14) and the air outlet chamber (15) are connected by gas through the PM2.5 detection module (7). The airflow path of the air outlet chamber (15) passes through the first mounting area (11) and the second mounting area (12).

9. The sensor assembly according to claim 8, characterized in that, It also includes a sealing element (8) which is disposed around the upper edge of the sensor box (1) and has at least one clearance opening corresponding to the air inlet chamber (14) and the air outlet chamber (15).

10. A range hood, employing the sensor assembly according to any one of claims 1 to 9, characterized in that, The device includes a main body (9) of a range hood, which has an electrical control cavity. The sensor box (1) is fixedly connected to the top plate of the electrical control cavity. The top plate of the electrical control cavity is provided with a detection hole (91), which communicates with the mounting cavity of the sensor box (1).

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