An oil fume detection device and an extractor hood

Abstract

This utility model discloses an oil fume detection device and a range hood. The oil fume detection device outputs clean external air through the air inlet channel 16 to the air outlet 17. In this way, the air blown out of the air outlet 17 isolates the oil fume entering the cavity 15 from the infrared transmitter 2 and the infrared receiver 3, thereby maintaining the cleanliness of the infrared detection module. Its structure is simple and can effectively avoid the infrared detection transceiver lens from being contaminated by oil fume. At the same time, it can further improve the accuracy of oil fume detection.

Description

Technical Field

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

[0002] With the development of smart home appliances, smart kitchens are developing rapidly. However, in the kitchen setting, oil fume detection is a pain point. Currently, infrared light is almost always used for detection, but this detection method is easily affected by the accumulation and pollution of oil fumes, which affects its accuracy and lifespan. Summary of the Invention

[0003] This utility model aims to at least partially solve one of the problems existing in the prior art. To this end, this utility model proposes an oil fume detection device with a simple structure, which can effectively avoid the infrared detection transceiver lens from being contaminated by oil fumes, and at the same time further improve the accuracy of oil fume detection.

[0004] In addition, this utility model proposes a range hood with a simple structure that can effectively improve the user experience and lifespan of the product.

[0005] The first objective mentioned above is achieved through the following technical solution:

[0006] An oil fume detection device includes a housing, an infrared transmitter, and an infrared receiver. The housing has an inlet, an outlet, and an air inlet. The housing contains an inlet channel, a cavity, and an air inlet channel. One end of the inlet channel is connected to the inlet, and the other end is connected to the lower end of the cavity. The upper end of the cavity is connected to the outlet. The infrared transmitter and receiver are respectively positioned at the left and right ends of the housing to detect oil fumes within the cavity. Air outlets are located at the left and right ends of the cavity, corresponding to the transmitting end of the infrared transmitter and the receiving end of the infrared receiver. One end of the air inlet channel is connected to the inlet, and the other end is connected to the two outlets.

[0007] In some embodiments, lenses are also included, which are respectively disposed at the transmitting end of the infrared transmitter and the receiving end of the infrared receiver.

[0008] In some embodiments, the air outlets are arranged in a direction parallel to the corresponding lenses.

[0009] In some embodiments, the air outlets are arranged from bottom to top.

[0010] In some embodiments, a filter element is also included, with a mounting groove recessed in the air inlet channel, and the filter element is disposed on the mounting groove.

[0011] In some embodiments, a connection channel is defined within the housing, one end of which is connected to the air inlet channel at the end away from the air inlet, and the other end is connected to the two air outlets respectively.

[0012] In some embodiments, the housing includes a housing body, a top cover disposed on the housing body, and a base. A hollow cavity is defined within the housing body to form the cavity. A communication port is provided on the bottom wall of the cavity, and a first through groove is recessed on the bottom wall of the housing body. The smoke inlet channel is defined on the base, and a second through groove is recessed on the top wall of the base. When the housing body is installed on the base, the smoke outlet end of the smoke inlet channel is connected to the communication port, and the first through groove and the second through groove are fitted together to form the air inlet channel.

[0013] In some embodiments, a first oil-proof rubber pad is also included, with a first fixing groove recessed around the outer position of the communication port, and a corresponding second fixing groove recessed on the top wall of the base. One end of the first oil-proof rubber pad is connected to the first fixing groove, and the other end is connected to the second fixing groove.

[0014] In some embodiments, a second oil-proof rubber pad is also included. A third groove is recessed on the bottom wall of the housing body around the first through groove, the cavity, the through opening, and the outer position of the air outlet. A corresponding fourth groove is recessed on the top wall of the base. One end of the second oil-proof rubber pad is connected to the third fixing groove, and the other end is connected to the fourth fixing groove.

[0015] The second objective mentioned above is achieved through the following technical solution:

[0016] A range hood includes an oil fume detection device as described in any of the above embodiments.

[0017] Compared with the prior art, the present invention has at least the following beneficial effects:

[0018] 1. The oil fume detection device of this utility model has a simple structure, can effectively avoid the infrared detection transceiver lens from being contaminated by oil fumes, and can further improve the accuracy of oil fume detection.

[0019] 2. The range hood of this utility model has a simple structure and can effectively improve the user experience and lifespan of the product. Attached Figure Description

[0020] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of the structure of the oil fume detection device in the embodiment of this utility model;

[0022] Figure 2 This is a cross-sectional view of the oil fume detection device in the embodiment of this utility model;

[0023] Figure 3 This is an exploded view of the oil fume detection device in the embodiment of this utility model;

[0024] Figure 4 This is a schematic diagram of the shell body in an embodiment of this utility model. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions in the embodiments of this utility model will be clearly and completely described below in conjunction with the embodiments of this utility model. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. The components of the embodiments of this utility model can be arranged and designed in various different configurations.

[0026] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of the claimed invention.

[0027] Example:

[0028] like Figures 1 to 4As shown, an oil fume detection device includes a housing 1, an infrared transmitter 2, and an infrared receiver 3. The housing 1 has an inlet 11, an outlet 12, and an air inlet 13. Inside the housing 1, there are defined smoke inlet channels 14, cavities 15, and air inlet channels 16. One end of the smoke inlet channel 14 is connected to the inlet 11, and the other end is connected to the lower end of the cavity 15. The upper end of the cavity 15 is connected to the outlet 12. The infrared transmitter 2 and the infrared receiver 3 are respectively disposed on the left and right ends of the housing 1 to detect oil fumes inside the cavity 15. Air outlets 17 are respectively disposed on the left and right ends of the cavity 15, corresponding to the transmitting end of the infrared transmitter 2 and the receiving end of the infrared receiver 3. One end of the air inlet channel 16 is connected to the inlet 13, and the other end is connected to the two outlets 17.

[0029] In this embodiment, the oil fume detection device outputs clean external air through the air inlet channel 16 to the air outlet 17. This isolates the oil fume entering the cavity 15 from the infrared transmitter 2 and the infrared receiver 3, thereby maintaining the cleanliness of the infrared detection module. Its structure is simple and can effectively prevent the infrared detection transceiver lens from being contaminated by oil fume. At the same time, it can further improve the accuracy of oil fume detection.

[0030] In this embodiment, a smoke inlet 11 is provided at the bottom of the housing 1, a smoke outlet 12 is provided at the top of the housing 1, and an air inlet 13 is provided on one side of the housing 1. A smoke inlet channel 14, a cavity 15, and an air inlet channel 16 are defined within the housing 1. The lower end of the smoke inlet channel 14 is connected to the smoke inlet 11, and its upper end is connected to the lower end of the cavity 15. The upper end of the cavity 15 is connected to the smoke outlet 12. The suction force of the range hood causes the fumes to sequentially pass through the smoke inlet 11 and the smoke inlet channel 14 before entering the cavity 15. Since an infrared emitter 2 and an infrared receiver 3 are respectively provided at the left and right ends of the cavity 15, the coordinated action of the infrared emitter 2 and the infrared receiver 3 can effectively monitor the fumes inside the cavity 15. The system detects oil fumes. In addition, air outlets 17 are provided at both ends of the cavity 15. The two air outlets 17 are respectively set to the transmitting end of the infrared transmitter 2 and the receiving end of the infrared receiver 3. One end of the air inlet channel 16 is connected to the outside through the air inlet 13 to introduce outside air into the air inlet channel 16. The other end is connected to the two air outlets 17 respectively, so that the air entering the air inlet channel 16 flows into the cavity 15 through the two air outlets 17. The air blown out through the air outlets 17 will continue to flow in the air outlet direction, so that the air blown out through the air outlets 17 will isolate the oil fumes entering the cavity 15 from the infrared transmitter 2 and the infrared receiver 3, thereby maintaining the cleanliness of the infrared detection module.

[0031] In this embodiment, the fume detection device is preferably applied to a range hood. Specifically, the range hood has a main body, the fume detection device is installed inside the main body, and the air outlet 17 passes through the side wall of the main body and is connected to the outside. Under the suction of the range hood, a negative pressure is formed inside the housing 1 through the air outlet 12, thereby drawing the fume inside the main body into the cavity 15 through the air inlet 11. At the same time, clean air outside the main body is drawn into the cavity 15 through the air inlet 13. Thus, the air blown out through the air outlet 17 isolates the fume inside the cavity 15 from the infrared transmitter 2 and the infrared receiver 3, thereby maintaining the cleanliness of the infrared detection module and preventing the infrared detection transceiver lens from being contaminated by fume.

[0032] Furthermore, it also includes lenses, which are respectively positioned at the transmitting end of the infrared transmitter 2 and the receiving end of the infrared receiver 3.

[0033] Preferably, the air outlets 17 are arranged in a direction parallel to the corresponding lenses.

[0034] Specifically, the air outlets 17 are set to vent from bottom to top.

[0035] In this embodiment, limiting grooves are recessed at the transmitting end of the infrared transmitter 2 and the receiving end of the infrared receiver 3. Lenses are installed within these limiting grooves to fix them at the transmitting end of the infrared transmitter 2 and the receiving end of the infrared receiver 3, respectively. Since the two air outlets 17 are respectively positioned corresponding to the transmitting end of the infrared transmitter 2 and the receiving end of the infrared receiver 3, air outlets 17 are respectively provided below the two lenses, thus ensuring that the two lenses are respectively positioned corresponding to the two air outlets 17. Furthermore, the airflow directions of the two air outlets 17 are respectively aligned with the corresponding... The lenses are arranged in parallel. More preferably, the air outlets 17 are arranged from bottom to top. When the fumes enter the cavity 15 through the smoke inlet 11 and the smoke inlet channel 14, the outside air flows into the cavity 15 through the air inlet 13 and the air inlet channel 16. The air blown out of the air outlets 17 continues to flow from bottom to top. In this way, the clean outside air is dispersed into the cavity 15, so that the air blown out of the air outlets 17 isolates the fumes entering the cavity 15 from the lenses, thereby maintaining the cleanliness of the infrared detection module.

[0036] Furthermore, it also includes a filter element 5, which has an installation groove recessed in the air inlet channel 16, and the filter element 5 is disposed on the installation groove.

[0037] In this embodiment, an installation groove is recessed on the inner sidewall of the air inlet channel 16, and the filter element 5 is disposed on the installation groove so that the filter element 5 is fixedly installed in the air inlet channel 16. In this way, the filter element 5 can filter the air entering the air inlet channel 16 through the air inlet 13. Since the air in the kitchen cannot be guaranteed to be 100% clean, by installing the filter element 5 in the air inlet channel 16, it is ensured that the gas entering the air channel is clean. More preferably, the filter element 5 is made of filter cotton, but it is not limited to filter cotton. Other more suitable materials can be selected according to actual needs.

[0038] Preferably, a connecting channel 18 is defined inside the housing 1. One end of the connecting channel 18 is connected to the air inlet channel 16 at the end away from the air inlet 13, and the other end is connected to two air outlets 17 respectively.

[0039] Specifically, the housing 1 includes a housing body 6, an upper cover 7 covering the housing body 6, and a base 8. A hollow cavity is defined within the housing body 6 to form a cavity 15. A connecting port 61 is connected to the bottom wall of the cavity 15, and a first through groove 62 is recessed on the bottom wall of the housing body 6. A smoke inlet channel 14 is defined on the base 8, and a second through groove 81 is recessed on the top wall of the base 8. When the housing body 6 is installed on the base 8, the smoke outlet end of the smoke inlet channel 14 is connected to the connecting port 61, and the first through groove 62 and the second through groove 81 are connected together to form an air inlet channel 16.

[0040] Preferably, it also includes a first oil-proof rubber pad 63, with a first fixing groove recessed around the outer position of the connecting opening 61, and a corresponding second fixing groove recessed on the top wall of the base 8. One end of the first oil-proof rubber pad 63 is connected to the first fixing groove, and the other end is connected to the second fixing groove.

[0041] Specifically, it also includes a second oil-proof rubber pad 64. A third groove is recessed on the bottom wall of the shell body 6 around the outer position of the first through groove 62, cavity 15, through 61 and air outlet 17. A fourth groove is correspondingly recessed on the top wall of the base 8. One end of the second oil-proof rubber pad 64 is connected to the third fixing groove, and the other end is connected to the fourth fixing groove.

[0042] In this embodiment, a hollow cavity is defined within the shell body 6 to form a cavity 15. A connecting port 61 is connected to the bottom wall of the cavity 15, and a first through groove 62 with its lower end open is recessed in the bottom wall of the shell body 6. A smoke inlet channel 14 is defined vertically on the base 8, and a second through groove 81 with its upper end open is recessed in the top wall of the base 8. When the shell body 6 and the base 8 are connected together, the upper end of the smoke inlet channel 14 is connected to the connecting port 61, and the lower end of the first through groove 62 is connected to the upper end of the second through groove 81 to form an air inlet channel 16. Furthermore, since a connecting channel 18 is defined within the shell 1, by placing the connecting channel 18 at a position outside the connecting port 61, one end of the connecting channel 18 is connected to the air inlet channel 16 at the end away from the air inlet 13, and the other end is connected to two air outlets 17 respectively, thereby facilitating the dissipation of clean air into the cavity 15.

[0043] More preferably, a first oil-proof rubber pad 63 is provided at the external position of the connecting port 61, and a second oil-proof rubber pad 64 is provided at the external position of the smoke inlet channel 14. In this way, at the joint between the shell body 6 and the base 8, since oil fumes can seep in through the gaps, this phenomenon is called "oil seepage". After long-term use, if too much oil fumes accumulate, they may flow into the cavity 15 under the action of gravity. Therefore, by adding an oil-proof rubber pad at the joint between the two, the phenomenon of "oil seepage" can be prevented. At the same time, adding an oil-proof rubber pad at the external position of the smoke inlet channel 14 can also enhance the sealing performance of the oil fume inlet between the shell body 6 and the base 8, thereby avoiding the phenomenon of oil fume seepage at the joint between the upper and lower parts.

[0044] The above descriptions are merely some embodiments of this utility model. For those skilled in the art, various modifications and improvements can be made without departing from the inventive concept of this utility model, and all such modifications and improvements fall within the protection scope of this utility model.

Claims

1. An oil fume detection device, characterized in that, The device includes a housing (1), an infrared transmitter (2), and an infrared receiver (3). The housing (1) has a smoke inlet (11), a smoke outlet (12), and an air inlet (13). The housing (1) contains a smoke inlet channel (14), a cavity (15), and an air inlet channel (16). One end of the smoke inlet channel (14) is connected to the smoke inlet (11), and the other end is connected to the lower end of the cavity (15). The upper end of the cavity (15) is connected to the smoke outlet (12). The infrared transmitter… The transmitter (2) and the infrared receiver (3) are respectively disposed on the left and right ends of the housing (1) to detect the oil fumes in the cavity (15). Air outlets (17) are respectively provided on the left and right ends of the cavity (15). The two air outlets (17) are respectively disposed on the transmitting end of the infrared transmitter (2) and the receiving end of the infrared receiver (3). One end of the air inlet channel (16) is connected to the air inlet (13), and the other end is connected to the two air outlets (17).

2. The oil fume detection device according to claim 1, characterized in that, It also includes lenses, which are respectively disposed at the transmitting end of the infrared transmitter (2) and the receiving end of the infrared receiver (3).

3. The oil fume detection device according to claim 2, characterized in that, The air outlets (17) are arranged in parallel directions with the corresponding lenses.

4. The oil fume detection device according to claim 1, characterized in that, The air outlets (17) are arranged from bottom to top.

5. The oil fume detection device according to claim 1, characterized in that, It also includes a filter element (5), which has a mounting groove recessed in the air inlet channel (16) and is mounted on the mounting groove.

6. The oil fume detection device according to claim 1, characterized in that, A connecting channel (18) is defined inside the housing (1). One end of the connecting channel (18) is connected to the air inlet channel (16) at the end away from the air inlet (13), and the other end is connected to the two air outlets (17) respectively.

7. The oil fume detection device according to claim 1, characterized in that, The housing (1) includes a housing body (6), an upper cover (7) covering the housing body (6), and a base (8). A hollow cavity is defined in the housing body (6) to form the cavity (15). A connecting port (61) is provided on the bottom wall of the cavity (15), and a first through groove (62) is recessed on the bottom wall of the housing body (6). The smoke inlet channel (14) is defined on the base (8), and a second through groove (81) is recessed on the top wall of the base (8). When the housing body (6) is installed on the base (8), the smoke outlet end of the smoke inlet channel (14) is connected to the connecting port (61), and the first through groove (62) and the second through groove (81) are connected together to form the air inlet channel (16).

8. The oil fume detection device according to claim 7, characterized in that, It also includes a first oil-proof rubber pad (63), a first fixing groove is recessed around the outer position of the connecting port (61), and a second fixing groove is correspondingly recessed on the top wall of the base (8). One end of the first oil-proof rubber pad (63) is connected to the first fixing groove, and the other end is connected to the second fixing groove.

9. The oil fume detection device according to claim 7, characterized in that, It also includes a second oil-proof rubber pad (64), a third groove is recessed on the bottom wall of the shell body (6) around the first through groove (62), the cavity (15), the through (61) and the air outlet (17), and a corresponding fourth groove is recessed on the top wall of the base (8). One end of the second oil-proof rubber pad (64) is connected to the third fixing groove and the other end is connected to the fourth fixing groove.

10. A range hood, characterized in that, Includes the oil fume detection device as described in any one of claims 1 to 9.

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