A range hood

Abstract

The utility model belongs to the electric appliance technical field, specifically discloses a kind of range hood. Range hood includes machine body, temperature sensing module and air curtain device, the machine body has the smoke top portion of setting towards down, the range hood further include temperature sensing module and air curtain device, the temperature sensing module is installed in the smoke top portion and is used to detect temperature downwards, the smoke top portion is opened with air curtain air outlet around the temperature sensing module, the air curtain device is installed in the machine body interior and is used to air supply to the air curtain air outlet, to form the protective airflow around the temperature sensing module. The utility model can form airflow protection to temperature sensing module by the air outlet of air curtain device, reduce the probability that temperature sensing module is invaded by oil fume, improve the detection sensitivity and detection reliability of temperature sensing module, improve the use experience of range hood.

Description

Technical Field

[0001] This utility model relates to the field of electrical technology, and in particular to a range hood. Background Technology

[0002] Range hoods are common kitchen appliances in modern homes. They use internal fans to extract kitchen fumes, purify the kitchen environment, and enhance the cooking experience.

[0003] Existing technology provides a range hood, which includes a smoke collection hood, a fan module mounted on top of the smoke collection hood, and a temperature sensing module mounted on the smoke collection hood. The temperature sensing module is mounted on the top of the smoke collection hood and located in the middle of the hood along the left-right direction. When the range hood is running, the temperature sensing module detects the temperature of the cooktop downwards and transmits the detection result to the range hood's controller. The controller controls the operation of the fan based on the temperature detected by the temperature sensing module, thereby matching the amount of smoke with the airflow.

[0004] Existing technology for range hoods often fails to completely remove cooking fumes, especially for those with smoke inlets at the top of the hood. As the fumes rise, they flow towards the temperature sensing module, causing grease to adhere to it. This affects the sensitivity and accuracy of the temperature sensor, ultimately reducing the range hood's fume extraction performance and impacting the long-term user experience. Utility Model Content

[0005] The technical problem solved by this utility model is to provide a range hood that can effectively solve the problem of reduced detection sensitivity and accuracy of the temperature sensing module caused by oil fumes adhering to it in existing range hoods.

[0006] The above-mentioned technical problems are solved by the following technical solutions:

[0007] A range hood includes a body having a downward-facing smoke-collecting top. The range hood further includes a temperature-sensing module and an air curtain device. The temperature-sensing module is installed on the smoke-collecting top and used to detect temperature downwards. The smoke-collecting top has air curtain outlets surrounding the temperature-sensing module. The air curtain device is installed inside the body and used to deliver air to the air curtain outlets to form a protective airflow around the temperature-sensing module.

[0008] Compared with the prior art, the range hood described in this utility model has the following advantages: by setting an air curtain outlet around the temperature sensing module at the top of the smoke collection, and by supplying air to the air curtain outlet, the air curtain device can form an airflow protective layer around the temperature sensing module, reducing the probability of oil fumes damaging the temperature sensing module and improving the accuracy and temperature sensitivity of the temperature sensing module.

[0009] In one embodiment, the air curtain outlets are arranged in multiple locations along the intervals of the temperature sensing module;

[0010] And / or, the air curtain outlet is an elongated hole surrounding the temperature sensing module, and the width of the air curtain outlet located on the front side of the temperature sensing module is greater than the width of the air curtain outlet located on the rear side of the temperature sensing module.

[0011] And / or, let the plane passing through the center of the detection end of the temperature sensing module and perpendicular to the front-back direction be a preset plane, and the width of the air curtain outlet on the front side of the preset plane is greater than the width of the air curtain outlet on the rear side of the preset plane.

[0012] In one embodiment, the width of the air curtain outlet located in front of the temperature sensing module is d1, 5mm≤d1≤10mm;

[0013] And / or, the width of the air curtain outlet located on the rear side of the temperature sensing module is d2, 1.5mm≤d2≤3.5mm.

[0014] In one embodiment, the detection end of the temperature sensing module is circular, and the air curtain outlet is an arc-shaped outlet surrounding the temperature sensing module, coaxially arranged with the detection end. In another embodiment, the air curtain device includes a housing and an air curtain fan. The upper end of the temperature sensing module is detachably connected to the housing. The housing has an air outlet channel surrounding the temperature sensing module. The air outlet port of the air outlet channel communicates with the air curtain outlet, and the air inlet port of the air outlet channel communicates with the fan outlet of the air curtain fan.

[0015] In one embodiment, the housing has a lower open mounting cavity, the upper end of the temperature sensing module is detachably disposed in the mounting cavity, and the air outlet channel is disposed around the outside of the mounting cavity.

[0016] In one embodiment, the temperature sensing module includes a mounting shell and a temperature sensing component. The upper end of the mounting shell is open and the lower end has a detection hole. The temperature sensing component is installed inside the mounting shell, and the detection end of the temperature sensing component is positioned directly opposite the detection hole.

[0017] The top wall of the mounting cavity has a protruding mounting cylinder. The upper end of the mounting shell is fitted with the mounting cylinder so that the mounting cylinder and the top wall of the mounting cavity cooperate to form the cover structure of the temperature sensing module.

[0018] In one embodiment, the housing includes an inner shell portion and an outer shell portion spaced apart outside the inner shell portion. A connecting rib portion connects the inner shell portion and the outer shell portion. The inner side of the inner shell portion has the mounting cavity. An air outlet channel is formed between the outer shell portion and the inner shell portion. Multiple connecting rib portions are spaced apart along the circumference of the inner shell portion to divide the air outlet channel into multiple sub-channels along the left and right sides. The air curtain fan is installed at the top of the outer shell portion.

[0019] In one embodiment, an air inlet cavity is provided at the upper end of the housing, and the air inlet ends of all the sub-channels are connected to the air inlet cavity. The air curtain fan is installed at the top of the housing, and the air outlet of the fan is connected to the air inlet cavity.

[0020] And / or, the sub-channel includes a first channel portion and a second channel portion that are connected vertically, the upper port of the first channel portion forms the air inlet port of the sub-channel, the cross-sectional area of ​​the first channel portion gradually decreases from top to bottom, the extension direction of the second channel portion is perpendicular to the top of the smoke collection, and the air outlet port of the second channel portion is directly connected to the air outlet of the air curtain.

[0021] In one embodiment, the upper end of the housing is open, the air curtain fan includes a fan housing and a fan installed in the fan housing, the upper end of the fan housing is open and the lower end is provided with the fan outlet, and the fan housing is detachably connected to the upper end of the housing.

[0022] In one embodiment, an installation groove is provided on one of the upper inner wall of the housing and the outer outer wall of the fan housing, and an installation protrusion is provided on the other. The first end of the installation groove forms an inlet / outlet and extends at least partially along the circumference of the housing from the first end to the second end. The installation protrusion can vertically enter and exit the installation groove through the inlet / outlet and slide along the installation groove. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the structure of a range hood provided in an embodiment of the present utility model;

[0024] Figure 2 for Figure 1 A magnified view of a section at point I;

[0025] Figure 3 A cross-sectional view of a range hood provided in an embodiment of this utility model;

[0026] Figure 4 for Figure 3 Enlarged view of point J in the middle;

[0027] Figure 5 for Figure 4 A magnified view of a section at point K;

[0028] Figure 6 An assembly diagram of the air curtain device and temperature sensing module provided in this embodiment of the utility model;

[0029] Figure 7 for Figure 6 A sectional view of the middle structure;

[0030] Figure 8 A schematic diagram of the mounting shell provided in an embodiment of this utility model;

[0031] Figure 9 The figure is a schematic diagram of the disassembled structure of the air curtain device and the temperature sensing module provided in the embodiment of this utility model;

[0032] Figure 10 for Figure 9 A magnified view of a section at point L;

[0033] Figure 11 A cross-sectional view of the housing provided in an embodiment of this utility model;

[0034] Figure 12 This is a schematic diagram of the housing structure from one perspective, provided in an embodiment of the present invention.

[0035] Figure 13 This is a structural schematic diagram of the housing provided in an embodiment of the present invention from another perspective.

[0036] Label Explanation:

[0037] 100. Air curtain device; 200. Temperature sensing module; 201. Mounting shell; 2011. Shell main body; 2012. Flange; 2013. Hook; 2014. Positioning plug-in; 202. Temperature sensing component; 300. Body; 301. Smoke collection top; 3011. Air curtain outlet; 3012. Top plate; 3013. Top decorative plate; 302. Top smoke inlet; 303. Side smoke inlet; 304. Smoke collection chamber; 305. Oil separator; 306. Oil separator chamber; 307. Air inlet; 400. Exhaust module; 401. Air box; 402. Exhaust fan; 500. Locking gasket; 600. Locking ring;

[0038] 1. Housing; 11. Inner housing; 111. Positioning hole; 112. Mounting cavity; 12. Outer housing; 13. Connecting rib; 14. Mounting cylinder; 15. Air outlet channel; 151. Sub-channel; 1511. First channel; 1512. Second channel; 16. Protruding rib; 17. Mounting ring; 171. Mounting groove; 1711. First groove; 1712. Second groove; 18. Stop protrusion; 19. Air inlet cavity; 110. Marking part;

[0039] 2. Air curtain fan; 21. Fan housing; 211. Main cylinder section; 212. Mounting protrusion; 213. Limiting protrusion; 22. Fan. Detailed Implementation

[0040] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0041] In the description of this application, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0042] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, unless otherwise stated, "a plurality of" means two or more.

[0043] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0044] like Figures 1 to 7 As shown, this embodiment provides a range hood that can reduce the damage of oil fumes to the temperature sensing module 200, better ensure the detection sensitivity and accuracy of the temperature sensing module 200, and improve the user experience of the range hood.

[0045] The range hood includes a body 300, an exhaust module 400, a temperature sensing module 200, and a controller. The body 300 has a smoke collection chamber 304 and a smoke inlet. The exhaust module 400 is installed on the body 300 and includes an exhaust fan 402. The exhaust fan 402 operates at the smoke inlet to create negative pressure, allowing external fumes to enter the smoke collection chamber 304 through the smoke inlet. The body 300 has a downward-facing smoke collection top 301. The temperature sensing module 200 is installed on the smoke collection top 301 and is used to detect the temperature of the cooktop. The controller is communicatively connected to both the temperature sensing module 200 and the exhaust fan 402, allowing the controller to control the fan's operation based on the results detected by the temperature sensing module 200.

[0046] In this embodiment, the range hood also includes an air curtain device 100. The top of the smoke collection 301 surrounds the temperature sensing module 200 and has an air curtain outlet 3011. The air curtain device 100 is installed inside the body 300 and is used to send air to the air curtain outlet 3011 to form a protective airflow around the temperature sensing module 200.

[0047] The range hood provided in this embodiment provides an air curtain outlet 3011 surrounding the temperature sensing module 200 by setting an air curtain outlet 3011 around the smoke collection top 301, and the air curtain device 100 supplies air to the air curtain outlet 3011, so that the air curtain device 100 can form an airflow protective layer around the temperature sensing module 200, reducing the probability of oil fumes damaging the temperature sensing module 200 and improving the accuracy and temperature measurement sensitivity of the temperature sensing module 200.

[0048] In one embodiment, the body 300 is arranged in a figure-7 shape, that is, it includes a smoke-collecting side section and a smoke-collecting horizontal section, with the upper end of the smoke-collecting side section connected to the rear end of the smoke-collecting horizontal section; the extraction module 400 includes a wind box 401 and an extraction fan 402 installed in the wind box 401, with the wind box 401 installed on the top of the body 300. Both the smoke-collecting side section and the smoke-collecting horizontal section have smoke inlets to improve the smoke collection effect, thereby improving the oil fume extraction effect. The smoke inlet located in the smoke-collecting horizontal section is a top smoke inlet 302, and the smoke inlet located in the smoke-collecting side section is a side smoke inlet 303. The lower side of the smoke-collecting horizontal section forms a smoke-collecting top 301, and the top smoke inlet 302 is located behind the temperature sensing module 200.

[0049] In other embodiments, the range hood can also be a top-mounted range hood; that is, the body 300 only has a smoke inlet at the top, located behind the temperature sensing module 200; in another embodiment, the range hood can also be a side-mounted range hood. In yet another embodiment, the range hood can also be a combined range hood and cooktop unit or other device capable of extracting and exhausting cooking fumes.

[0050] It is worth noting that this utility model uses a 7-shaped range hood to illustrate the setting of the temperature sensing module 200 and the air curtain device 100 on the range hood. However, it is understood that the setting of the temperature sensing module 200 and the air curtain device 100 on other models of range hoods can refer to the setting of this utility model. This utility model will not list them one by one.

[0051] In one embodiment, the temperature sensing module 200 is installed in the middle of the body 300 along the left-right direction, and the temperature sensing module 200 can detect the temperature of both the left and right burners of the stove. Specifically, the temperature sensing module 200 is fixedly installed in the body 300, and the detection area formed by the temperature sensing module 200 on the stove covers both burners; or, the temperature sensing module 200 can be rotated and installed in the body 300 to sway left and right, so that the detection area of ​​the temperature sensing module 200 can selectively cover the left burner or the right burner through the left-right sway.

[0052] In other embodiments, two temperature sensing modules 200 may be arranged at intervals along the left-right direction, and the two temperature sensing modules 200 respectively detect the temperature of the two burners. An air curtain device 100 may be arranged in a one-to-one correspondence with each temperature sensing module 200, so that the airflow generated by each air curtain device 100 protects the corresponding temperature sensing module 200; only one air curtain device 100 may be provided, and each air curtain device 100 may have two sets of protective air outlet sections, with the two sets of protective air outlet sections corresponding to the two temperature sensing modules 200.

[0053] It is worth noting that the specific structures of the extraction module 400 and the body 300 can be set with reference to the existing technology. This is not the focus of this utility model, and this utility model does not limit or elaborate on it.

[0054] In one embodiment, the top interior of the body 300 has an oil-separating chamber 306 separated from the smoke collection chamber 304. The upper end of the temperature sensing module 200 and the air curtain device 100 are both installed in the oil-separating chamber 306. Air inlets 307 communicating with the oil-separating chamber 306 are provided on the left and right sides or the top wall of the body 300. Thus, when the air curtain device 100 is running, air from the sides or top of the body 300 enters the oil-separating chamber 306 through the air inlets 307 and is sent to the air curtain outlet 3011. The oil-separating chamber 306 prevents oil fumes from entering the oil-separating chamber 306 and causing the airflow flowing out of the air curtain outlet 3011 to be grease-laden, ensuring the cleanliness of the airflow blown by the air curtain device 100.

[0055] Air inlets 307 are preferably located at the top front of the unit 300 to prevent grease buildup in the air on both sides of the unit 300 when oil fumes escape to the sides. Positioning the air inlets 307 at the top front of the unit 300 also improves the overall aesthetics of the range hood. Multiple air inlets 307 are preferably provided to ensure sufficient airflow while minimizing the size of each individual air inlet 307, thereby preventing external dust, impurities, or small animals from entering the grease trap 306.

[0056] An oil baffle 305 is provided inside the top of the body 300. The oil baffle 305 extends in the left and right direction and its two ends are connected to the inner walls of the left and right sides of the body 300 respectively. The oil baffle 305 divides the upper space of the body 300 into an oil baffle chamber 306 and a part of the smoke collection chamber 304. The top smoke inlet 302 is located on the rear side of the oil baffle 305.

[0057] In one embodiment, a temperature sensing mounting hole is provided on the top of the smoke collector 301. The temperature sensing module 200 includes a mounting shell 201 and a temperature sensing component 202. The lower end of the mounting shell 201 is inserted into the temperature sensing mounting hole and has a detection hole. The temperature sensing component 202 is installed inside the mounting shell 201, and the detection end of the temperature sensing component 202 is positioned directly opposite the detection hole. By providing the temperature sensing mounting hole, the installation and positioning of the temperature sensing module 200 on the top of the smoke collector 301 can be achieved, ensuring the installation accuracy of the temperature sensing module 200 and thus ensuring the reliability of the temperature detection by the temperature sensing module 200.

[0058] In one embodiment, the air curtain device 100 includes a housing 1 and an air curtain fan 2. The upper end of the temperature sensing module 200 is detachably connected to the housing 1. The housing 1 has an air outlet channel 15 surrounding the temperature sensing module 200. The air outlet port of the air outlet channel 15 communicates with the air curtain air outlet 3011, and the air inlet port of the air outlet channel 15 communicates with the fan outlet of the air curtain fan 2. By detachably connecting the upper end of the temperature sensing module 200 to the housing 1, the relative positional accuracy of the temperature sensing module 200 and the air curtain device 100 can be ensured, thereby ensuring the reliability of the protective airflow formed around the temperature sensing module 200 and improving the protective effect on the temperature sensing module 200. At the same time, this arrangement allows the lower end of the temperature sensing module 200 to be installed in the temperature sensing mounting hole, and the upper end to be connected to the housing 1 of the air curtain device 100. This ensures the installation accuracy of the temperature sensing module 200 while facilitating the sharing of a fixing structure between the temperature sensing module 200 and the housing 1, thus improving the structural compactness.

[0059] In another embodiment, the temperature sensing module 200 is installed in the temperature sensing mounting hole and detachably connected to the body 300. The housing 1 is detachably installed inside the oil-separating cavity 306, and the temperature sensing module 200 and the housing 1 are not connected. That is, the temperature sensing module 200 and the air curtain device 100 are respectively installed in the oil-separating cavity 306. In another embodiment, the smoke collection top 301 has an installation port. The air curtain device 100 is installed in the oil-separating cavity 306. The upper end of the temperature sensing module 200 is installed in the housing 1 and the lower end is inserted into the installation port. An air curtain outlet 3011 is formed between the side wall of the installation port and the outer side of the temperature sensing module 200, surrounding the temperature sensing module 200. That is, the temperature sensing module 200 is only connected to the housing 1.

[0060] In one embodiment, the body 300 includes a smoke collection hood, which has a smoke collection chamber 304 and a smoke inlet. An oil separator 305 is disposed on the top of the smoke collection hood, and the smoke inlet is also disposed on the top of the smoke collection hood. The smoke collection hood has a downward-facing top plate 3012, and a top decorative plate 3013 is covered on the lower side of the top plate 3012. The top decorative plate 301 includes the top plate 3012 and the top decorative plate 3013. Temperature sensing mounting holes and air curtain outlet holes 3011 both penetrate the top plate 3012 and the top decorative plate 3013.

[0061] However, it is understood that in other embodiments, the smoke collection top 301 may only include the top plate 3012 of the smoke collection hood. The specific structural configuration of the smoke collection top 301 can be specifically configured with reference to different existing models, and this embodiment does not limit the specific structure of the smoke collection top 301.

[0062] It is worth noting that the temperature sensing component 202 adopts a non-contact temperature detection principle, such as infrared thermometry. The temperature sensing module 200 can, but is not limited to, using existing devices capable of non-contact temperature detection, such as infrared temperature sensors. This embodiment does not limit or elaborate on the specific structure and detection principle of the temperature sensing component 202.

[0063] like Figure 2As shown, in one embodiment, the air curtain outlet 3011 is an elongated hole surrounding the temperature sensing module 200, and the width of the air curtain outlet 3011 located on the front side of the temperature sensing module 200 is greater than the width of the air curtain outlet 3011 located on the rear side of the temperature sensing module 200. By setting the air curtain outlet in an elongated hole, it is easier to control the width of the air curtain outlet 3011, thereby saving air volume while forming an airflow protection ring surrounding the temperature sensing module 200, thus reducing the air volume requirement of the air curtain device 100. Meanwhile, the width of the air curtain outlet 3011 on the front side of the temperature sensing module 200 is set to be greater than the width of the air curtain outlet 3011 on the rear side. This makes the air outlet speed of the air curtain outlet 3011 on the front side less than that of the air curtain outlet 3011 on the rear side. This facilitates the rapid airflow at the rear side to flow backward to the smoke inlet under the action of the negative pressure during the extraction of fumes. This ensures a continuous flow of air through the air curtain outlet 3011, so that the area around the temperature sensing module 200 is filled with clean air blown by the temperature sensing air curtain device 100, thus improving the protection performance of the temperature sensing module 200.

[0064] In one embodiment, multiple air curtain outlets 3011 are spaced circumferentially around the temperature sensing module 200 to facilitate the placement of temperature sensing mounting holes, thus achieving an arrangement where the air curtain outlets 3011 surround the temperature sensing mounting holes. However, it is understood that in other embodiments, the air curtain outlets 3011 are annular structures surrounding the temperature sensing module 200. In this case, the upper end of the temperature sensing module 200 is connected to the housing 1, or the upper end of the temperature sensing module 200 is fixed to the body 300 through a fixing structure inside the oil-separating cavity 306.

[0065] In one embodiment, a preset plane is defined as the surface passing through the center of the detection end of the temperature sensing module 200 and perpendicular to the front-back direction. The width of the air curtain outlet 3011 on the front side of the preset plane is greater than the width of the air curtain outlet 3011 on the rear side of the preset plane. This arrangement ensures that the width of the air curtain outlet 3011 on the front side of the preset plane is relatively large, while the width of the air curtain outlet 3011 on the rear side of the preset plane is relatively small, thus ensuring consistent airflow on both sides of the preset plane and reducing manufacturing difficulty.

[0066] In other embodiments, multiple air curtain outlets 3011 are arranged along the periphery of the temperature sensing module 200. The air curtain outlets 3011 located at the front of the temperature sensing module 200 may have the largest width, while those at the rear may have the smallest width, and the air curtain outlets 3011 located on the left and right sides of the temperature sensing module 200 may have a moderate width. In another embodiment, two air curtain outlets 3011 may be arranged in the front-to-back direction. The width of the front air curtain outlet 3011 gradually decreases from the center to both sides, while the width of the rear air curtain outlet 3011 gradually increases from the center to both ends. The minimum width of the front air curtain outlet 3011 is greater than or equal to the maximum width of the rear air curtain outlet 3011.

[0067] To control the airflow speed and air curtain width, in one embodiment, the width of the air curtain outlet 3011 located on the front side of the temperature sensing module 200 is d1, 4mm≤d1≤10mm; and / or, the width of the air curtain outlet 3011 located on the rear side of the temperature sensing module 200 is d2, 1.5mm≤d2≤3.5mm. d1 can be, but is not limited to, 4mm, 5mm, 6mm, 7mm, 8mm, 9mm, or 10mm; d2 can be, but is not limited to, 1.5mm, 2mm, 2.5mm, 3mm, or 3.5mm.

[0068] In one embodiment, four air curtain outlets 3011 are arranged at intervals along the circumference of the temperature sensing module 200. The frontmost air curtain outlet 3011 is the front air outlet, the rearmost air curtain outlet 3011 is the rear air outlet, and the air curtain outlets 3011 on the left and right sides are side air outlets. The side air outlets have a front air outlet section and a rear air outlet section that are connected from front to back. The width of the front air outlet section is the same as the width of the front air outlet, which is d1, and the width of the rear air outlet section is the same as the width of the rear air outlet, which is d2.

[0069] In one embodiment, the detection end of the temperature sensing module 200 is circular to reduce the installation difficulty of the temperature sensing module 200. The air curtain outlet 3011 is an arc-shaped outlet surrounding the temperature sensing module 200, and the arc-shaped outlet is coaxially arranged with the detection end. This facilitates the surrounding arrangement of the air curtain outlet 3011 around the temperature sensing module 200, facilitates the formation of detection airflow near the temperature sensing module 200, and facilitates the control of the distance between the air curtain outlet 3011 and the temperature sensing module 200.

[0070] In other embodiments, the detection end of the temperature sensing module 200 can adopt other shapes, such as rectangles, and the shape of the air curtain outlet 3011 can be adapted to the shape of the detection end, as long as multiple air curtain outlets 3011 are arranged around the detection end of the temperature sensing module 200.

[0071] In one embodiment, the distance between the air curtain outlet 3011 and the temperature sensing module 200 is d, where d ≤ 15 mm. This allows the airflow from the air curtain outlet 3011 to be closer to the temperature sensing module 200, thereby ensuring that the airflow from the air curtain outlet 3011 can cover the lower area of ​​the temperature sensing module 200 and effectively enhance protection.

[0072] like Figures 4 to 8 As shown, in one embodiment, the mounting housing 201 includes a main housing portion 2011, the upper end of which is connected to the housing 1. The temperature sensing component 202 is installed inside the main housing portion 2011. The lower end of the main housing portion 2011 is inserted into the temperature sensing mounting hole and has a flange portion 2012 protruding outward. The flange portion 2012 abuts against the lower side of the smoke collecting top 301. By providing the main housing portion 2011 and inserting it into the temperature sensing mounting hole, the installation positioning of the mounting housing 201 by the temperature sensing mounting hole is achieved. By providing the flange portion 2012 abutting against the lower side of the smoke collecting top 301, the depth to which the mounting housing 201 is inserted upward into the oil separator cavity 306 can be limited, thereby improving the installation reliability of the temperature sensing module 200.

[0073] To improve the airflow protection effect, in one embodiment, the outer contour of the flange 2012 is projected onto the smoke collection top 301 and coincides with the edge of at least the front air curtain outlet 3011 near the temperature sensing module 200. This ensures the structural strength of the smoke collection top 301 at the temperature sensing mounting hole while minimizing the distance between the air curtain outlet 3011 and the temperature sensing module 200. At the same time, this arrangement reduces the overall footprint of the air curtain device 100 and the temperature sensing module 200 in the front-back direction of the smoke collection top 301, thereby reducing the dimensional requirements of the smoke collection top 301 in the front-back direction and thus reducing the size of the range hood in the front-back direction.

[0074] Furthermore, the front air vent and the edge of the front air vent near the temperature sensing module 200 coincide with the outer contour of the flange 2012 in the orthographic projection of the smoke collection top 301.

[0075] In one embodiment, a locking ring 600 is screwed onto the main housing 2011, and the locking ring 600 is pressed against the upper side of the smoke collection top 301. By setting the locking ring 600, the temperature sensing module 200 can be effectively prevented from moving relative to the body 300, ensuring the reliability and stability of the installation of the temperature sensing module 200 on the body 300, thereby helping to ensure the detection accuracy of the temperature sensing module 200.

[0076] In one embodiment, the housing 1 has a mounting cavity 112 with a lower opening. The lower end of the housing 1 abuts against the upper side of the smoke collection top 301. The upper end of the temperature sensing module 200 is detachably disposed in the mounting cavity 112. The housing 1 has an air outlet channel 15 inside. The air outlet channel 15 is disposed around the outside of the temperature sensing module 200 and its lower end is connected to the air curtain outlet 3011. The upper end of the air outlet channel 15 is connected to the fan outlet. By providing a mounting cavity 112 on the housing 1, the upper end of the temperature sensing module 200 can be accommodated through the mounting cavity 112, so that the housing 1 is arranged around the upper side of the module, making the overall modular structure formed by the temperature sensing module 200 and the air curtain device 100 more compact, which helps to reduce the space occupied by the temperature sensing module 200 and the air curtain device 100 inside the body 300. At the same time, by providing an air outlet channel 15 around the temperature sensing module 200 inside the housing 1, the air outlet of the air curtain fan 2 can flow downward around the temperature sensing module 200 along the air outlet channel 15, thereby ensuring the smoothness and uniformity of the air outlet at each air curtain outlet 3011.

[0077] In one embodiment, the housing 1 includes an inner shell portion 11 and an outer shell portion 12 spaced apart outside the inner shell portion 11. A connecting rib portion 13 connects the inner shell portion 11 and the outer shell portion 12. The inner side of the inner shell portion 11 has an installation cavity 112. An air outlet channel 15 is formed between the outer shell portion 12 and the inner shell portion 11. An air curtain fan 2 is installed at the top of the outer shell portion 12.

[0078] By providing the inner shell portion 11, it is beneficial to form the mounting cavity 112. Simultaneously, the cooperation between the inner shell portion 11 and the outer shell portion 12 can form the air outlet channel 15, thereby simplifying the structure of the housing 1 and making it easy to install. Furthermore, by providing the inner shell portion 11, it is beneficial to separate the temperature sensing module 200 from the air outlet channel 15, preventing the temperature sensing module 200 from affecting the air outlet and improving the ease of installation and use of the temperature sensing module 200. Moreover, installing the air curtain fan 2 on the top of the outer shell portion 12 also facilitates the connection between the upper end of the air outlet channel 15 and the fan outlet, improving the ease of installation of the air curtain fan 2. Specifically, the locking ring 600 is located inside the inner shell portion 11 to prevent interference between the locking ring 600 and the housing 1, and also to prevent the locking ring 600 from affecting the smoothness of the air outlet of the air curtain device 100 and reducing air outlet noise.

[0079] In other embodiments, the housing 1 is a single-layer housing with a mounting cavity 112. The interior of the single-layer housing is provided with a mounting plate. The upper end of the mounting shell 201 is mounted on the mounting plate. The mounting plate has multiple ventilation openings that communicate with the air outlet of the fan. An air outlet channel 15 surrounding the temperature sensing module 200 is formed between the temperature sensing module 200 and the inner wall of the single-layer housing.

[0080] In one embodiment, the air outlet channel 15 includes a plurality of sub-channels 151 arranged around the mounting cavity 112. The air outlet port of the sub-channel 151 is connected to the air curtain outlet 3011, and the air inlet port of each sub-channel 151 is connected to the air outlet of the fan. By dividing the plurality of air outlet channels 15 into a plurality of sub-channels 151 in the circumference of the mounting cavity 112, it is beneficial to guide the airflow to flow to each air curtain outlet 3011, and at the same time, it is beneficial to process and shape the mounting cavity 112. Furthermore, the sub-channels 151 are arranged in a one-to-one correspondence with the air curtain outlet 3011, that is, the air outlet port of each sub-channel 151 is directly opposite the air curtain outlet 3011.

[0081] Specifically, multiple connecting ribs 13 are spaced apart circumferentially along the inner shell 11, and the lower end of each connecting rib 13 extends to the lower side of the inner shell 11, forming a sub-channel 151 between two adjacent connecting ribs 13. The inner shell 11 and the outer shell 1 are connected by multiple connecting ribs, which can ensure the overall structural strength and rigidity of the shell 1, reduce the probability of deformation of the shell 1, and improve the stability and reliability of the air curtain device 100.

[0082] To improve the installation stability and reliability of the temperature sensing module 200, in one embodiment, the top wall of the mounting cavity 112 is provided with a protruding mounting cylinder 14, and the upper end of the mounting shell 201 is open and engages with the mounting cylinder 14. This arrangement allows the top wall of the mounting cavity 112 to seal the opening of the mounting shell 201, so that the top plate structure of the inner shell 11 forms the cover structure of the temperature sensing module 200. This protects the temperature sensing component 202 while eliminating the need for a cover structure for the temperature sensing module 200, thereby simplifying the structure of the overall module formed by the temperature sensing module 200 and the air curtain device 100 and reducing costs. At the same time, by providing the mounting cylinder 14 to engage with the mounting shell 201, positioning can be provided for the assembly of the mounting shell 201 and the shell 1, improving assembly efficiency, reducing assembly difficulty, and improving assembly accuracy.

[0083] In other embodiments, the temperature sensing module 200 may include an end cap that is detachably connected to the mounting shell 201 and seals the upper opening of the mounting shell 201, the upper end of which is detachably connected to the housing 1.

[0084] In one embodiment, the cross-section of the mounting cylinder 14 is a non-circular cross-section, and the upper end of the mounting shell 201 has the same shape as the mounting cylinder 14. The mounting cylinder 14 is inserted into the mounting shell 201. By setting the cross-section of the mounting cylinder 14 to a non-circular cross-section, relative rotation between the temperature sensing module 200 and the mounting shell 201 can be avoided during assembly, ensuring the reliability of the relative position of the temperature sensing module 200 and the mounting shell 201 in the circumferential direction. This, in turn, ensures that after the shell 1 is installed on the temperature sensing module 200, the air outlet ports of the multiple sub-channels 151 are aligned with the multiple air curtain outlet holes 3011.

[0085] In other embodiments, the mounting cylinder 14 may also be a circular cylindrical structure, and the mounting cylinder 14 and the mounting housing 201 may employ other existing anti-rotation structures to prevent relative rotation between the two.

[0086] Specifically, the mounting cylinder 14 has two opposite and spaced-apart straight wall portions and an arcuate wall portion connecting the two ends of the two straight wall portions, the two straight wall portions and the two arcuate wall portions being connected to form a cylindrical structure. In other embodiments, the mounting cylinder 14 may also have only one straight wall portion.

[0087] In one embodiment, the mounting cylinder 14 is snapped into the mounting shell 201, thereby improving the assembly efficiency of the mounting cylinder 14 and the mounting shell 201 and reducing the difficulty of assembling and disassembling the air curtain device 100. Specifically, a protruding rib 16 is provided on the outer wall of the mounting cylinder 14, and a hook 2013 is provided on the inner wall of the mounting shell 201. The hook 2013 is engaged with the protruding rib 16 to achieve a snap-fit ​​engagement between the two. However, it is understood that other existing structures that can achieve a snap-fit ​​engagement between the mounting cylinder 14 and the mounting shell 201 can also be applied to this utility model, such as a snap-fit ​​structure with a protrusion and a groove.

[0088] Multiple ribs 16 are provided at intervals along the circumference of the mounting cylinder portion 14, and hook portions 2013 are provided one-to-one with the ribs 16 to ensure the connection stability and reliability of the mounting shell 201 and the shell 1. Furthermore, ribs 16 are provided on both the two straight wall portions and the two arc-shaped wall portions.

[0089] like Figure 8 and Figure 11 As shown, in one embodiment, a positioning insertion part 2014 protrudes from the upper end of the mounting shell 201, and a positioning insertion hole 111 is formed on the top wall of the mounting cavity 112. The positioning insertion part 2014 is inserted into the positioning insertion hole 111 to realize the assembly and positioning of the mounting shell 201 and the housing 1. At the same time, the connecting wire of the temperature sensing module 200 passes through the positioning insertion hole 111 and exits the mounting shell 201 to facilitate the wiring of the temperature sensing module 200.

[0090] When assembling the temperature sensing module 200 and the air curtain device 100, first install the temperature sensing component 202 into the mounting housing 201, then insert the mounting housing 201 from bottom to top into the temperature sensing mounting hole until the flange 2012 abuts against the top of the smoke collection hood 301, then put the locking gasket 500 onto the main housing 2011 through the top opening of the smoke collection hood, and then screw the locking ring 600 onto the main housing 2011 from top to top until it is locked; after assembling the air curtain device 100 as a whole, insert it into the oil separation cavity 306 from the top of the smoke collection hood and snap it into the upper end of the main housing 2011.

[0091] To improve assembly efficiency, in one embodiment, the outer wall of the outer shell portion 12 is provided with a marking portion 110, which corresponds one-to-one with the protruding rib portion 16. This provides visual alignment for the assembly of the shell 1 and the mounting shell 201, reducing assembly difficulty. The marking portion 110 can be a protruding structure that protrudes from the outer shell portion 12.

[0092] like Figures 9 to 13 As shown, in one embodiment, an air inlet cavity 19 is provided at the upper end of the housing 1, and the air inlets of all sub-channels 151 are connected to the air inlet cavity 19. The air curtain fan 2 is installed at the top of the housing 1, and the fan outlet is connected to the air inlet cavity 19. By providing the air inlet cavity 19, it is convenient to realize the connection between the fan outlet and each sub-channel 151, reducing the installation requirements of the air curtain fan 2.

[0093] To improve the air outlet speed of the sub-channel 151, the sub-channel 151 includes a first channel portion 1511 and a second channel portion 1512 that are connected vertically. The upper port of the first channel portion 1511 forms the air inlet port of the sub-channel 151. The cross-sectional area of ​​the first channel portion 1511 gradually decreases from top to bottom. The extension direction of the second channel portion 1512 is perpendicular to the top of the smoke collection 301, and the air outlet port of the second channel portion 1512 is directly connected to the air curtain outlet 3011. By setting the first channel section 1511, the inlet size of the first channel section 1511 is increased, which facilitates the introduction of the air outlet of the fan into the sub-channel 151. At the same time, since the cross-sectional area of ​​the first channel section 1511 gradually decreases from top to bottom, the flow velocity of the air flowing out of the sub-channel 151 can be increased, thereby improving the protective effect. Furthermore, by setting the extension direction of the second channel section 1512 to be perpendicular to the top of the smoke collection 301, the airflow from the sub-channel 151 can flow vertically to the air curtain outlet 3011, avoiding the problem of air leakage caused by tilted air outlet.

[0094] In one embodiment, the inner shell portion 11 includes an inner frustum portion and an inner cylinder portion connected vertically, and the outer shell portion 12 includes an outer frustum portion and an outer cylinder portion connected vertically. The outer frustum portion is spaced apart and sleeved on the outside of the inner frustum portion, forming a first channel portion 1511 between the inner and outer frustum portions. The outer cylinder portion is spaced apart and sleeved on the outside of the inner cylinder portion, forming a second channel portion 1512 between the inner and outer cylinder portions. The cone angle of the inner frustum portion is greater than that of the outer frustum portion, so that the width of the first channel portion 1511 in the radial direction of the inner shell portion 11 gradually decreases from top to bottom.

[0095] In one embodiment, the air curtain fan 2 includes a fan housing 21 and a fan 22 installed inside the fan housing 21. The upper end of the fan housing 21 is open to form a fan inlet, and the lower end of the fan housing 21 is provided with a fan outlet. The fan housing 21 is detachably installed on the upper end of the housing 1. That is, the air curtain fan 2 is an axial flow fan, which facilitates the installation and removal of the air curtain fan 2 on the housing 1.

[0096] To improve the ease of assembling and disassembling the air curtain fan 2 on the housing 1, an installation groove 171 is provided on one of the upper inner wall of the housing 1 and the outer outer wall of the fan housing 21, and an installation protrusion 212 is provided on the other. The first end of the installation groove 171 forms an inlet and outlet slot and extends at least partially along the circumference of the housing 1 from the first end to the second end. The installation protrusion 212 can vertically enter and exit the installation groove 171 through the inlet and outlet slot and slide along the installation groove 171.

[0097] By setting the mounting groove 171 and the mounting protrusion 212, when assembling the air curtain fan 2, the mounting protrusion 212 is inserted into the mounting groove 171, and then the air curtain fan 2 is rotated so that the mounting protrusion 212 slides along the mounting groove 171 to the end of the mounting groove 171 away from the inlet and outlet slot, thus achieving the assembly limit of the two; when disassembling, the mounting protrusion 212 is simply removed from the inlet and outlet slot along the mounting groove 171, which has high disassembly and assembly efficiency and can also ensure the stability after assembly.

[0098] In other embodiments, the mounting housing 201 and the fan housing 21 may also be connected by snap-fit, screw connection or other detachable connection methods.

[0099] In one embodiment, a mounting groove 171 is provided on the mounting shell 201, and a mounting protrusion 212 protrudes from the inner wall of the fan shell 21. The first end of the mounting groove 171 penetrates the upper end of the shell 1 to form an inlet / outlet slot. In other embodiments, the mounting groove 171 may also be provided on the outer wall of the fan shell 21. Multiple mounting grooves 171 are provided at intervals along the circumference of the shell 1, and the mounting protrusions 212 are provided in a one-to-one correspondence with the mounting grooves 171 to ensure the assembly stability and reliability of the air curtain fan 2 and the shell 1.

[0100] To improve the stability of the air curtain fan 2 after installation, the mounting groove 171 includes a first groove 1711 and a second groove 1712 that are connected at an angle. The first groove 1711 extends downward from the inlet / outlet, and the second groove 1712 extends circumferentially from the lower end of the first groove 1711 along the housing 1. With this arrangement, when assembling the air curtain fan 2, the air curtain fan 2 can be moved downward first, and then rotated, thus achieving stable installation of the air curtain fan 2 on the mounting housing 201.

[0101] The width of the first groove 1711 gradually decreases from top to bottom, which helps to increase the width of the inlet and outlet groove, thereby guiding the mounting protrusion 212 into the mounting slide 171 and further reducing the assembly difficulty; and the downwardly tapered first groove 1711 also helps to prevent the mounting protrusion 212 from falling out of the mounting slide 171, improving the stability and reliability of the mounting protrusion 212 in the mounting slide 171.

[0102] A stop protrusion 18 is provided on the upper side wall of the second groove 1712. The stop protrusion 18 is spaced apart from the closed end of the second groove 1712, and the mounting protrusion 212 can slide between the stop protrusion 18 and the closed end of the second groove 1712. The stop protrusion 18 can prevent the mounting protrusion 212 from sliding along the second groove 1712. Thus, after the outer wall of the air curtain fan 2 is assembled, the mounting protrusion 212 is restricted from sliding freely in the mounting groove 171. The stop protrusion 18 has an arc-shaped structure so that the fan housing 21 can pass over the stop protrusion 18 under the pushing action of external force.

[0103] In one embodiment, the upper end of the outer shell 12 is connected to a mounting ring 17, which is a circular ring structure. The inner wall of the mounting ring 17 is provided with a mounting groove 171 or a mounting protrusion 212 to improve the ease of installation of the air curtain fan 2 on the shell 1.

[0104] The fan housing 21 includes a main cylinder portion 211, in which the fan 22 is installed. A mounting protrusion 212 protrudes from the outer wall of the main cylinder portion 211, and the main cylinder portion 211 is coaxially arranged with the mounting ring portion 17. A limiting protrusion 213 also protrudes from the outer wall of the main cylinder portion 211, abutting against the upper end of the housing 1. Specifically, the limiting protrusion 213 abuts against the upper end of the mounting ring portion 17.

[0105] In the specific implementation of the above embodiments, the technical features can be combined in any non-contradictory way. For the sake of brevity, not all possible combinations of the above technical features are described. However, as long as the combination of these technical features is not contradictory, it should be considered to be within the scope of this specification.

[0106] The specific embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are detailed, they should not be construed as limiting the scope of this utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A range hood, comprising a body (300), said body (300) having a downwardly facing smoke-collecting top (301), characterized in that, The range hood also includes a temperature sensing module (200) and an air curtain device (100). The temperature sensing module (200) is installed on the top of the smoke collection top (301) and is used to detect the temperature downwards. The top of the smoke collection top (301) has an air curtain outlet (3011) around the temperature sensing module (200). The air curtain device (100) is installed inside the body (300) and is used to send air to the air curtain outlet (3011) to form a protective airflow around the temperature sensing module (200).

2. The range hood according to claim 1, characterized in that, The air curtain outlet (3011) is provided in multiple locations along the intervals of the temperature sensing module (200); And / or, the air curtain outlet (3011) is an elongated hole surrounding the temperature sensing module (200), and the width of the air curtain outlet (3011) located on the front side of the temperature sensing module (200) is greater than the width of the air curtain outlet (3011) located on the rear side of the temperature sensing module (200). And / or, let the plane passing through the center of the detection end of the temperature sensing module (200) and perpendicular to the front-back direction be a preset plane, and the width of the air curtain outlet (3011) on the front side of the preset plane is greater than the width of the air curtain outlet (3011) on the rear side of the preset plane.

3. The range hood according to claim 1, characterized in that, The detection end of the temperature sensing module (200) has a circular structure, and the air curtain outlet (3011) is an arc-shaped outlet surrounding the temperature sensing module (200), with the arc-shaped outlet coaxially arranged with the detection end.

4. The range hood according to any one of claims 1-3, characterized in that, The air curtain device (100) includes a housing (1) and an air curtain fan (2). The upper end of the temperature sensing module (200) is detachably connected to the housing (1). The housing (1) has an air outlet channel (15) surrounding the temperature sensing module (200). The air outlet port of the air outlet channel (15) is connected to the air outlet hole (3011) of the air curtain. The air inlet port of the air outlet channel (15) is connected to the fan outlet of the air curtain fan (2).

5. The range hood according to claim 4, characterized in that, The housing (1) has a mounting cavity (112) with an open bottom. The upper end of the temperature sensing module (200) is detachably disposed in the mounting cavity (112). The air outlet channel (15) is disposed around the outside of the mounting cavity (112).

6. The range hood according to claim 5, characterized in that, The temperature sensing module (200) includes a mounting shell (201) and a temperature sensing component (202). The upper end of the mounting shell (201) is open and the lower end has a detection hole. The temperature sensing component (202) is installed inside the mounting shell (201), and the detection end of the temperature sensing component (202) is positioned directly opposite the detection hole. The top wall of the mounting cavity (112) is provided with a mounting cylinder (14), and the upper end of the mounting shell (201) is fitted with the mounting cylinder (14) so ​​that the mounting cylinder (14) and the top wall of the mounting cavity (112) cooperate to form the cover structure of the temperature sensing module (200).

7. The range hood according to claim 5, characterized in that, The housing (1) includes an inner shell (11) and an outer shell (12) spaced apart on the outside of the inner shell (11). A connecting rib (13) connects the inner shell (11) and the outer shell (12). The inner shell (11) has the mounting cavity (112) on its inner side. An air outlet channel (15) is formed between the outer shell (12) and the inner shell (11). Multiple connecting ribs (13) are spaced apart along the circumference of the inner shell (11) to divide the air outlet channel (15) into multiple sub-channels (151) from left to right. The air curtain fan (2) is installed on the top of the outer shell (12).

8. The range hood according to claim 7, characterized in that, The upper end of the housing (1) is provided with an air inlet cavity (19), and the air inlet ends of all the sub-channels (151) are connected to the air inlet cavity (19). The air curtain fan (2) is installed on the top of the housing (1), and the air outlet of the fan is connected to the air inlet cavity (19). And / or, the sub-channel (151) includes a first channel portion (1511) and a second channel portion (1512) that are connected vertically. The upper port of the first channel portion (1511) forms the air inlet port of the sub-channel (151). The cross-sectional area of ​​the first channel portion (1511) gradually decreases from top to bottom. The extension direction of the second channel portion (1512) is perpendicular to the top of the smoke collection top (301), and the air outlet port of the second channel portion (1512) is directly connected to the air curtain outlet hole (3011).

9. The range hood according to claim 4, characterized in that, The upper end of the housing (1) is open. The air curtain fan (2) includes a fan housing (21) and a fan (22) installed in the fan housing (21). The upper end of the fan housing (21) is open and the lower end is provided with the fan outlet. The fan housing (21) is detachably connected to the upper end of the housing (1).

10. The range hood according to claim 9, characterized in that, An installation groove (171) is provided on one of the upper inner wall of the housing (1) and the outer outer wall of the fan housing (21), and an installation protrusion (212) is provided on the other. The first end of the installation groove (171) forms an inlet and outlet slot and extends at least partially along the circumference of the housing (1) from the first end to the second end. The installation protrusion (212) can vertically enter and exit the installation groove (171) through the inlet and outlet slot and slide along the installation groove (171).

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