An oil fume purification device

Abstract

The utility model discloses an oil fume purification equipment, including fume collecting hood, infrared temperature sensor and installation position feedback device, fume collecting hood is used for installing above the kitchen range, infrared temperature sensor sets up on the fume collecting hood one side towards the kitchen range's stove head and sets up towards stove head, the field of view detection area of infrared temperature sensor is aligned stove head area, is used for detecting the temperature near corresponding stove head area, installation position feedback device is used for detecting the installation position of oil fume purification equipment on corresponding installation wall surface, and when the installation position meets the prearranged installation specification, carries out installation in place prompt, so that the field of view detection area of infrared temperature sensor is aligned stove head area, and the field of view detection area is located within the range of stove head area, wherein, prearranged installation specification is used for indicating the reference installation position of oil fume purification equipment and the maximum offset amount that oil fume purification equipment is relative to the reference installation position is allowed.

Description

Technical Field

[0001] This utility model relates to the field of smart home technology, and in particular to an oil fume purification device. Background Technology

[0002] With the improvement of living standards, range hoods, as a common kitchen appliance for purifying the kitchen environment, quickly extract and discharge the exhaust gas generated at the stove and the oil fumes produced during cooking, thereby reducing indoor oil fume pollution and achieving the purpose of purifying kitchen air and improving the user's cooking comfort.

[0003] Currently, range hoods equipped with infrared temperature measurement functions can monitor the temperature of pots and pans on the cooktop using infrared temperature sensors. Based on temperature changes during cooking, the range hood automatically controls itself. Therefore, the accuracy of temperature measurement is a crucial factor affecting the automatic control of the range hood. Furthermore, the relative installation position of the range hood and cooktop in the horizontal and / or vertical directions is also important. Excessive offset of the range hood relative to the cooktop in these directions can cause the pots and pans to move out of the infrared temperature sensor's field of view, resulting in temperature measurement errors and ultimately affecting the automatic control of the range hood. Therefore, the horizontal and / or vertical offset of the range hood relative to the cooktop is also a significant factor influencing its automatic control.

[0004] However, during typical range hood installations, the impact of horizontal and / or vertical offsets between the cooktop and the range hood on the range hood's automatic control is not considered. This can lead to significant horizontal and / or vertical offsets that compromise the accuracy of infrared temperature sensors, ultimately affecting the range hood's automatic control. Furthermore, while installers may adhere to standardized installation procedures, these standards may not meet the needs of all users. Utility Model Content

[0005] This utility model provides an oil fume purification device that can determine the installation position of the oil fume purification device relative to the stove in accordance with the preset installation specifications based on the user's actual application scenario and installation scenario, and provide installation prompts. This avoids the problem of blind installation or uniform installation standards affecting the temperature measurement accuracy of the subsequent infrared temperature sensor, achieving user-friendly installation and meeting the user's installation needs.

[0006] This utility model embodiment provides an oil fume purification device, including:

[0007] A smoke hood, used for installation above the stove;

[0008] An infrared temperature sensor is installed on the side of the smoke hood facing the burner of the stove and is positioned towards the burner; the field of view of the infrared temperature sensor is aligned with the burner area to detect the temperature near the corresponding burner area.

[0009] The installation position feedback device is used to detect the installation position of the fume purification equipment on the corresponding installation wall, and to provide a prompt when the installation position meets the preset installation specifications, so that the field of view detection area of ​​the infrared temperature sensor is aligned with the stove head area and the field of view detection area is within the range of the stove head area.

[0010] The preset installation specifications are used to indicate the reference installation position of the fume purification equipment and the maximum allowable offset of the fume purification equipment relative to the reference installation position.

[0011] This utility model provides an oil fume purification device. Based on the user's actual application and installation scenarios, the device uses an installation position feedback device to determine the installation position relative to the stove that conforms to preset installation specifications. When the device's installation position on the corresponding wall surface is detected to meet the preset specifications, it provides a prompt indicating that installation is complete. This facilitates the installation process for relevant personnel and avoids the problem of blind installation or uniform installation standards affecting the accuracy of subsequent infrared temperature sensor measurements. It achieves user-friendly installation, meeting user needs. Furthermore, after installation, the infrared temperature sensor's field of view is aligned with the burner area, and the infrared temperature sensor's field of view is within the burner area, effectively improving the temperature measurement accuracy of the infrared temperature sensor. This, in turn, enhances the automatic control effect of the oil fume purification device and ensures a good cooking experience and user comfort. Attached Figure Description

[0012] Figure 1 This is a structural schematic diagram of an oil fume purification device and a stove provided in an embodiment of this utility model;

[0013] Figure 2a This is a simplified positional relationship diagram of the reference horizontal installation position of an oil fume purification device provided in this embodiment of the utility model;

[0014] Figure 2b This is a simplified positional relationship diagram showing the maximum allowable horizontal offset of an oil fume purification device relative to a reference horizontal installation position, provided by an embodiment of this utility model.

[0015] Figure 3a and Figure 3b This is a schematic diagram showing the position of the field of view detection area of ​​the two infrared temperature sensors provided in this embodiment of the invention relative to the burner area of ​​the stove.

[0016] Figure 4 This is a schematic diagram of the field of view detection area and field of view angle of an infrared temperature sensor provided in an embodiment of this utility model;

[0017] Figure 5a This is a simplified positional relationship diagram of the reference installation height of an oil fume purification device provided in this embodiment of the utility model;

[0018] Figure 5b This is a simplified positional relationship diagram of the maximum allowable height offset of an oil fume purification device relative to a reference installation height, provided by an embodiment of this utility model.

[0019] Figure 6a and Figure 6b This is a schematic diagram showing the position of the field of view detection area of ​​two other infrared temperature sensors provided in this embodiment of the invention relative to the burner area of ​​the stove.

[0020] Figure 7 This is a schematic diagram of the field of view detection area and field of view angle of another infrared temperature sensor provided in this embodiment of the present invention;

[0021] Figure 8a yes Figure 6a The diagram shows the triangular similarity between the field of view detection area of ​​the infrared temperature sensor and the burner area of ​​the stove.

[0022] Figure 8b yes Figure 6b The diagram shows the triangular similarity between the field of view detection area of ​​the infrared temperature sensor and the burner area of ​​the stove.

[0023] Figure 9 and Figure 10 These are structural schematic diagrams of two more oil fume purification devices and stoves provided in this utility model embodiment;

[0024] Figures 11-14 These are structural schematic diagrams of four more oil fume purification devices and stoves provided in this utility model embodiment;

[0025] Figure 15 and Figure 16 These are structural schematic diagrams of two more oil fume purification devices and stoves provided in this utility model embodiment;

[0026] Figures 17-19 These are structural schematic diagrams of three more oil fume purification devices and stoves provided in this utility model embodiment. Detailed Implementation

[0027] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, not the entire structure.

[0028] Figure 1 This is a structural schematic diagram of an oil fume purification device and a stove provided in an embodiment of this utility model, as shown below. Figure 1 As shown, the fume purification device includes a fume hood 10, an infrared temperature sensor 20, and an installation position feedback device. The fume hood 10 is installed above the cooktop 30. The infrared temperature sensor 20 is located on the side of the fume hood 10 facing the burner 31 of the cooktop 30 and is positioned towards the burner 31. The field of view of the infrared temperature sensor 20 is aligned with the burner 31 area to detect the temperature near the corresponding burner 31 area. The installation position feedback device detects the installation position of the fume purification device on the corresponding mounting wall and provides a prompt when the installation position meets the preset installation specifications, ensuring that the field of view of the infrared temperature sensor 20 is aligned with the burner 31 area, and that the field of view 20 is within the range of the burner 31 area. The preset installation specifications indicate the reference installation position of the fume purification device and the maximum allowable offset of the fume purification device relative to the reference installation position.

[0029] Specifically, the fume purification device includes a fume hood 10 and an infrared temperature sensor 20. The fume hood 10 collects oily fumes from the environment to purify it, and the infrared temperature sensor 20 detects the temperature of a corresponding area. In the finished product design of the fume purification device, the fume hood 10 needs to be installed above the cooktop 30, and the infrared temperature sensor 20 needs to be positioned on the side of the fume hood 10 facing the burner 31 of the cooktop 30, with the infrared temperature sensor 20 facing the burner 31 of the cooktop 30. It is also ensured that the field of view detection area of ​​the infrared temperature sensor 20 is aligned with the burner 31 area of ​​the cooktop 30, and that the field of view detection area of ​​the infrared temperature sensor 20 is within the range of the burner 31 area of ​​the cooktop 30, further ensuring the accuracy of temperature detection by the infrared temperature sensor 20. For example, the center line 21 of the field of view detection area of ​​the infrared temperature sensor 20 can pass through the center point of the burner 31 area of ​​the cooktop 30.

[0030] Furthermore, the fume purification equipment also includes an installation position feedback device disposed on the fume collection hood 10. This installation position feedback device stores a preset installation specification corresponding to the fume purification equipment. This preset installation specification is used to indicate the reference installation position of the fume purification equipment and the maximum allowable offset of the fume purification equipment relative to the reference installation position. It is understood that in the finished fume purification equipment, the position of the infrared temperature sensor 20 on the fume collection hood 10 is determined and known, and the field of view of the infrared temperature sensor 20 is also determined and known. Therefore, based on the preferred condition that the center of the field of view detection area of ​​the infrared temperature sensor 20 is aligned with the center of the burner head 31 area of ​​the stove 30, the reference installation position of the fume purification equipment can be determined; that is, the reference installation position of the fume purification equipment is determined and known. Based on the reference installation position of the fume purification equipment, the fume purification equipment should have a determined installation offset range, that is, the maximum allowable offset of the fume purification equipment relative to the reference installation position, which allows the field of view detection area of ​​the infrared temperature sensor 20 to be located within the burner head 31 area of ​​the stove 30. In this way, a correspondence can be established between the reference installation position of the fume purification equipment and the maximum allowable offset of the equipment relative to the reference installation position, and a preset installation specification can be used to indicate to installers whether the installation position of the fume purification equipment is appropriate. In simpler terms, installers can use this preset installation specification to install the fume purification equipment at the corresponding reference installation position, or to install it within the maximum allowable offset range of the reference installation position. For example, the reference installation position indicated by the preset installation specification may include a height of 1.8 meters, and the maximum allowable offset range may include a height range of 0.1 meters. Therefore, installers can use this preset installation specification to install the fume purification equipment at any height within the range of 1.7 meters to 1.9 meters. Similarly, the horizontal installation range of the fume purification equipment relative to the stove can also be obtained based on this preset installation specification.

[0031] Based on this, in order to ensure that the installation position of the fume purification equipment on the corresponding mounting wall (exemplarily, the mounting wall can be a kitchen wall) meets the requirements of the preset installation specifications after the installation is completed, the field of view detection area of ​​the infrared temperature sensor 20 is aligned with the burner 31 area of ​​the stove 30, and the field of view detection area of ​​the infrared temperature sensor 20 is within the range of the burner 31 area of ​​the stove 30. The installation position feedback device can detect the installation position of the fume purification equipment on the corresponding mounting wall in real time or at regular intervals, and then analyze and compare the detected installation position with the reference installation position indicated by the preset installation specifications of the fume purification equipment and the maximum allowable offset relative to the reference installation position. When the detected installation position meets the range of the maximum allowable offset of the reference installation position of the fume purification equipment, the installation is in place prompt. In this way, installers can determine whether the installation location of the fume purification equipment meets the preset installation specifications without relying on personal installation experience or cumbersome dimensional measurements. Installers only need to receive an installation confirmation prompt to determine if the installation location meets the preset specifications. This effectively simplifies the installation process and ensures that the installation location of the fume purification equipment is conducive to the accuracy of temperature measurement by the infrared temperature sensor 20. For example, the detection information of the installation location of the fume purification equipment may include, but is not limited to, the distance between the infrared temperature sensor 20 and the wall where the fume purification equipment is installed, the distance between the infrared temperature sensor 20 and the countertop of the stove 30, and the distance of the infrared temperature sensor 20 along the first direction X relative to the center of the corresponding burner head 31, where the first direction X is parallel to the line connecting the centers of the two burners 31 on the stove 30. For example, the installation confirmation prompt may include, but is not limited to, audible prompts, visual signal prompts, and electrical signal prompts. For example, the installation confirmation prompt may be an indicator light, illuminating green when the installation location of the fume purification equipment meets the preset installation specifications and red when the installation location does not meet the preset installation specifications.

[0032] Furthermore, this embodiment does not specifically require or limit the number of infrared temperature sensors 20 corresponding to the burner heads 31. Exemplarily, the infrared temperature sensors 20 and burner heads 31 can have a one-to-one correspondence; that is, one infrared temperature sensor 20 can correspond to one burner head 31 below the fume purification device. In this way, the infrared temperature sensor 20 can detect the temperature near the corresponding burner head 31 area (this area typically corresponds to the area inside the cooking pot 40), and the temperature detection accuracy of the infrared temperature sensor 20 is high. Therefore, it can accurately detect the temperature inside the cooking pot 40 to determine the cooking stage based on the corresponding temperature, thereby controlling the fume purification device to operate at an appropriate level and mode. Also, this embodiment does not specifically require or limit the number of infrared temperature sensors 20 corresponding to the installation position feedback device. Exemplarily, the infrared temperature sensors 20 and installation position feedback devices can have a one-to-one correspondence; that is, one infrared temperature sensor 20 can correspond to one installation position feedback device on the fume purification device. In this way, the installation position feedback device can detect the installation position of the corresponding infrared temperature sensor 20 relative to the stove 30, ensuring that the installation position of the fume purification equipment on the corresponding installation wall meets the requirements of the preset installation specifications. At the same time, it ensures that the field of view detection area of ​​the infrared temperature sensor 20 corresponds to the burner 31 area of ​​the stove 30, further ensuring the accuracy of temperature detection by the infrared temperature sensor 20.

[0033] The technical solution in this embodiment of the utility model allows the fume purification device to determine the installation position relative to the stove that conforms to the preset installation specifications based on the user's actual application scenario and installation scenario. When the installation position of the fume purification device on the corresponding wall surface is detected to conform to the preset installation specifications, a prompt is issued indicating that the installation is in place. This facilitates the installation process for relevant installers and avoids the problem of blind installation or uniform installation standards affecting the accuracy of subsequent infrared temperature sensor measurements. This achieves user-friendly installation, meets user installation needs, and ensures that after installation, the infrared temperature sensor's field of view is aligned with the stove area and within the stove area, effectively improving the temperature measurement accuracy of the infrared temperature sensor. This, in turn, enhances the automatic control effect of the fume purification device and guarantees a good cooking experience and user comfort.

[0034] Optionally, continue to refer to Figure 1 The installation position feedback device includes a detection module 50 (exemplarily, the detection module 50 can be located on the side of the fume hood 10 facing the cooktop 30), and a controller ( Figure 1(Not shown in the diagram, but exemplarily, the controller can be located inside the fume hood 10) and the prompt module 60 (exemplarily, the prompt module 60 can be located in the panel area of ​​the fume hood 10); the controller is electrically connected to the detection module 50 and the prompt module 60 respectively; the detection module 50 is configured to detect the installation position of the fume purification equipment on the corresponding mounting wall; the controller is configured to control the prompt module 60 to provide a prompt indicating that the installation is in place when the installation position meets the preset installation specifications.

[0035] Specifically, the detection module 50 can detect the installation position of the fume purification device on the corresponding mounting wall in real time or at regular intervals. For example, the detection information of the installation position of the fume purification device may include, but is not limited to, the specific position of the infrared temperature sensor 20 (e.g., the distance between the infrared temperature sensor 20 and the wall where the fume purification device is installed, the distance between the infrared temperature sensor 20 and the countertop of the cooktop 30) and the relative position of the infrared temperature sensor 20 and the corresponding burner head 31 (e.g., the distance of the infrared temperature sensor 20 along the first direction X relative to the center of the corresponding burner head 31). The controller is electrically connected to the detection module 50, and can receive the installation position of the fume purification device detected by the detection module 50. The controller can also analyze and compare the detected installation position with the reference installation position indicated by the preset installation specifications corresponding to the fume purification device and the maximum allowable offset relative to the reference installation position. Furthermore, since the controller is electrically connected to the prompting module 60, when the detected installation position meets the maximum allowable offset range of the reference installation position of the fume purification equipment, that is, when the detected installation position conforms to the preset installation specifications, the controller can also control the prompting module 60 to provide a prompt indicating that the installation is in place. For example, the prompting module 60 can remind relevant installers through sound signals, light signals, electrical signals, etc., that the corresponding installation position of the fume purification equipment conforms to the preset installation specifications, and the fume purification equipment can be installed and fixed at that position.

[0036] Further reference Figure 1 The detection module 50 includes a horizontal installation position detection unit 51 and / or an installation height detection unit 52; the horizontal installation position detection unit 51 is an image sensor, and the installation height detection unit 52 is an infrared ranging sensor.

[0037] Specifically, the detection module 50 can detect the installation position of the fume purification equipment on the corresponding mounting wall in real time or at regular intervals. For example, the installation position of the fume purification equipment can include a horizontal installation position in the horizontal direction and / or a vertical installation height position. Thus, the detection module 50 can utilize a horizontal installation position detection unit 51 to detect the horizontal installation position of the fume purification equipment on the corresponding mounting wall. The horizontal installation position detection unit 51 can be an image sensor. The image sensor can determine the horizontal positional relationship between the fume purification equipment and the stove 30 below by taking a picture of the area below the fume purification equipment. An image sensor is a device that uses the photoelectric conversion function of an optoelectronic device to convert a light image on a photosensitive surface into an electrical signal proportional to the light image. Image sensors have the characteristics of small size, light weight, high integration, high resolution, low power consumption, long lifespan, and low price. Furthermore, the detection module 50 can utilize an installation height detection unit 52 to detect the installation height of the fume purification equipment on the corresponding mounting wall. The height detection unit 52 can be an infrared ranging sensor. The infrared ranging sensor detects the distance in the area below the fume purification equipment to determine the vertical distance between the fume purification equipment and the stove 30 below. The infrared ranging sensor is a measurement system that uses infrared light as a medium. The infrared ranging sensor has the characteristics of wide measurement range, short response time, compact design, easy installation and easy operation.

[0038] In one specific implementation, alternatively, reference may continue to be made to... Figure 1 The installation position feedback device includes a horizontal installation position detection unit 51, which is set on the side of the fume hood 10 facing the stove 30, and is used to detect the horizontal installation position of the fume purification equipment on the corresponding installation wall. The preset installation specification includes a first installation specification. The first installation specification is used to indicate the reference horizontal installation position of the fume purification equipment and the maximum horizontal offset of the fume purification equipment relative to the reference horizontal installation position. The maximum horizontal offset is the allowable offset of the fume purification equipment relative to the stove 30 in any direction parallel to the plane where the stove 30 is located.

[0039] First, we will explain the first installation specification in the preset installation specifications. Figure 2a This is a simplified positional diagram illustrating the reference horizontal installation position of an oil fume purification device according to an embodiment of this utility model. Figure 2aAs shown, the reference horizontal installation position of the fume purification device indicated by the first installation specification can be understood as the optimal horizontal installation position of the fume purification device relative to the cooktop 30, or the standard horizontal relative installation position between the cooktop 30 and the fume purification device. At this time, the field of view detection area of ​​the infrared temperature sensor 20 is located within the area of ​​the burner head 31 of the cooktop 30, and the center line 21 of the field of view detection area of ​​the infrared temperature sensor 20 just passes through the center point O of the burner head 31 area of ​​the cooktop 30. For example, this reference horizontal installation position may include the reference distance a (i.e., the length of line segment OD) between the center point of the burner head 31 and the wall where the fume purification device is installed, the reference distance b (i.e., the length of line segment CD) between the infrared temperature sensor 20 and the wall where the fume purification device is installed, the reference distance c (i.e., the length of line segment AB) between the infrared temperature sensor 20 and the countertop of the cooktop 30, and the reference offset z (i.e., the length of line segment BC) of the infrared temperature sensor 20 along the first direction X relative to the center of the corresponding burner head 31. Figure 2b This is a simplified positional diagram illustrating the maximum permissible horizontal offset of an oil fume purification device relative to a reference horizontal installation position, as provided in this embodiment of the utility model. Figure 2b As shown, the first installation specification indicates the maximum permissible horizontal offset of the fume purification device relative to the reference horizontal installation position. This maximum horizontal offset is the permissible offset of the fume purification device relative to the cooktop 30 in any direction parallel to the plane of the cooktop 30. It can be understood as the maximum offset between the reference horizontal installation position and the final installation position of the fume purification device in the plane parallel to the cooktop 30, or, based on the standard horizontal relative installation positions between the cooktop 30 and the fume purification device, the permissible horizontal offset range of the fume purification device. At this time, the field of view detection area of ​​the infrared temperature sensor 20 is located at a critical position within the area of ​​the burner head 31 of the cooktop 30. For example, the maximum horizontal offset may include the permissible offset of the fume purification device relative to the reference horizontal installation position in the front-back direction, and the permissible offset of the fume purification device relative to the reference horizontal installation position in the left-right direction. It should also be noted that... Figure 2a and Figure 2b In contrast, the same infrared temperature sensor 20 only has a horizontal offset relative to the stove 30, with no vertical offset.

[0040] In this way, the required installation position of the fume purification equipment on the corresponding mounting wall can be determined according to the first installation specification. The horizontal installation position detection unit 51 is used to detect the horizontal installation position of the fume purification equipment on the corresponding mounting wall, so that the detected horizontal installation position can be analyzed and compared with the reference horizontal installation position indicated by the first preset installation specification for the fume purification equipment, as well as the maximum allowable horizontal offset relative to the reference horizontal installation position. When the detected horizontal installation position meets the range corresponding to the maximum allowable horizontal offset of the reference horizontal installation position of the fume purification equipment, that is, when the detected installation position conforms to the first preset installation specification, an installation confirmation is given. At this point, the installer can install the fume purification equipment on the mounting wall. In this horizontal installation position, the field of view of the infrared temperature sensor 20 is aligned with the burner head 31 area of ​​the stove 30, and the field of view of the infrared temperature sensor 20 is within the range of the burner head 31 area of ​​the stove 30.

[0041] Figure 3a and Figure 3b This is a schematic diagram showing the position of the field of view detection area of ​​the two infrared temperature sensors provided in this embodiment of the invention relative to the burner area of ​​the stove. Figure 3a and Figure 3b As shown, the small circle represents the field of view detection area of ​​the infrared temperature sensor 20, the large dashed circle represents the position of the burner head 31 area of ​​the stove 30 when the fume purification equipment is installed in the reference horizontal position, and the large solid circle represents the position of the burner head 31 area of ​​the stove 30 when the fume purification equipment has the maximum allowable horizontal offset relative to the reference horizontal installation position. It should also be noted that regardless of the positional relationship between the infrared temperature sensor 20 and the burner head 31 of the stove 30, the height and field of view of the infrared temperature sensor 20 are fixed, therefore the size of the field of view detection area of ​​the infrared temperature sensor 20 is fixed. For example... Figure 3a and Figure 3b The field of view detection area of ​​the infrared temperature sensor 20 shown is the same.

[0042] Continue to refer to Figure 3a and Figure 3b The maximum horizontal offset t can be determined based on the distance between the center point of the field of view detection area of ​​the infrared temperature sensor 20 and the center point of the burner head 31 area of ​​the stove 30, and the field of view detection area of ​​the infrared temperature sensor 20 cannot extend beyond the burner head 31 area of ​​the stove 30. Figure 3a Taking this as an example, the maximum horizontal offset t = j / 2 - f / 2 = (jf) / 2. Similarly, using... Figure 3bTaking this as an example, the maximum horizontal offset t = j / 2 - f / 2 = (jf) / 2, where j is the diameter of the area of ​​the furnace head 31, and f is the diameter of the field of view detection area of ​​the infrared temperature sensor 20. And, Figure 4 This is a schematic diagram of the field of view detection area and field of view angle of an infrared temperature sensor provided in an embodiment of this utility model, as shown below. Figure 4 As shown, the shape of the field of view detection area of ​​the infrared temperature sensor 20 is clearly similar to that of a searchlight, which can be understood as conical. The diameter of the field of view detection area of ​​the infrared temperature sensor 20 is f, and the radius of the field of view detection area of ​​the infrared temperature sensor 20 is k = f / 2. Taking line segment MN as one of the diameters of the field of view detection area of ​​the infrared temperature sensor 20 as an example, the field of view angle of the infrared temperature sensor 20 is 2α0, and half of the field of view angle of the infrared temperature sensor 20 is α0. It can be clearly obtained that k = d × tanα0. That is, the diameter f of the field of view detection area of ​​the infrared temperature sensor can be determined by the field of view angle 2α0 of the infrared temperature sensor 20 and the length d of the line connecting the center of the infrared temperature sensor 20 and the center of the corresponding furnace head 31, which is helpful in determining the maximum horizontal offset t. The line connecting the center of the infrared temperature sensor 20 and the center of the corresponding furnace head 31 is also the field of view center line 21 of the field of view detection area of ​​the infrared temperature sensor 20. In addition, Figure 3a and Figure 3b As shown in the horizontal position offset example, if the field of view of the infrared temperature sensor 20 extends beyond the burner head 31 area of ​​the stove 30, then the field of view of the infrared temperature sensor 20 will at least partially detect the temperature of the external area of ​​the cooking pot 40 (such as the temperature of the flame or countertop), thus causing the detected temperature to not accurately reflect the actual internal temperature of the pot 40. Of course, Figure 3a and Figure 3b The horizontal position offset shown is only an example, and other horizontal offsets may also be included, which will not be illustrated in this embodiment.

[0043] Optionally, the maximum horizontal offset t is determined based on the following parameters: the field of view 2α0 of the infrared temperature sensor 20; the reference distance a between the center point of the burner 31 and the wall where the fume purification equipment is installed; the reference distance b between the infrared temperature sensor 20 and the wall where the fume purification equipment is installed; the reference distance c between the infrared temperature sensor 20 and the countertop of the cooktop 30; the reference offset z of the infrared temperature sensor 20 along the first direction X relative to the center of the corresponding burner 31; and the diameter j of the burner 31 area; wherein the first direction X is parallel to the line connecting the centers of the two burners 31 on the cooktop 30.

[0044] Among them, the reference distance a can be understood as the distance between the center point of the burner 31 and the mounting wall in the second direction Y, the reference distance b can be understood as the distance between the infrared temperature sensor 20 and the mounting wall in the second direction Y, the reference distance c can be understood as the distance between the infrared temperature sensor 20 and the countertop of the stove 30 in the third direction Z, and the reference offset z can be understood as the distance between the infrared temperature sensor 20 and the center of the corresponding burner 31 in the first direction X.

[0045] Continue to refer to Figure 1 The center point of the burner head 31 can be point O. The reference distance a between the center point of the burner head 31 and the wall where the fume purification equipment is installed can be the length of the line segment OD. That is, draw a perpendicular line through point O to the wall where the fume purification equipment is installed. The intersection of this perpendicular line and the wall where the fume purification equipment is installed is point D. In other words, the line segment OD is perpendicular to the wall where the fume purification equipment is installed.

[0046] The infrared temperature sensor 20 can be represented by point A. The vertical projection point of the infrared temperature sensor 20 onto the cooktop 30 can be represented by point B. The reference distance c between the infrared temperature sensor 20 and the cooktop 30 can be represented by line segment AB, which can also be understood as the reference installation height of the fume purification device. Furthermore, the reference offset z of the infrared temperature sensor 20 along the first direction X relative to the center of its corresponding burner head 31 can be represented by line segment BC. That is, line segment BC is parallel to the first direction X and parallel to the direction of the line connecting the centers of the two burners 31 on the cooktop 30.

[0047] Infrared temperature sensor 20 can be point A. The vertical projection point of infrared temperature sensor 20 onto the countertop of stove 30 can be point B. Draw a perpendicular line from point O to the extension of line segment OD, with point C as the intersection point. Line segment BC is perpendicular to line segment OC (or, line segment BC is perpendicular to line segments CD and OD). The reference distance b between infrared temperature sensor 20 and the wall where the fume purification equipment is installed can be line segment CD, and line segment CD is perpendicular to the wall where the fume purification equipment is installed.

[0048] Infrared temperature sensor 20 can be point A, the center point of burner head 31 can be point O, and the length d of the line connecting infrared temperature sensor 20 and the center of corresponding burner head 31 can be line segment AO. This allows us to obtain... That is, and then, That is, the maximum allowable horizontal offset t of the fume purification device relative to the reference horizontal installation position can be determined based on the field of view 2α0 of the infrared temperature sensor 20, the reference distance a between the center point of the burner 31 and the wall where the fume purification device is installed, the reference distance b between the infrared temperature sensor 20 and the wall where the fume purification device is installed, the reference distance c between the infrared temperature sensor 20 and the countertop of the stove 30, the reference offset z of the infrared temperature sensor 20 along the first direction X relative to the center of the corresponding burner 31, and the diameter j of the area of ​​the burner 31.

[0049] In another specific embodiment, alternatively, reference continues. Figure 1 The installation position feedback device includes an installation height detection unit 52, which is set on the side of the fume hood 10 facing the stove 30, and is used to detect the installation height of the fume purification equipment on the corresponding installation wall. The installation height is based on the height of the infrared temperature sensor 20 relative to the stove 30. The preset installation specifications include a second installation specification. The second installation specification is used to indicate the reference installation height of the fume purification equipment and the maximum allowable height deviation of the fume purification equipment relative to the reference installation height. The maximum height deviation is the allowable deviation of the fume purification equipment relative to the stove 30 in the direction perpendicular to the plane where the stove 30 is located.

[0050] First, the second installation specification in the preset installation specifications will be explained. Figure 5a This is a simplified positional relationship diagram of the reference installation height of an oil fume purification device provided in this embodiment of the utility model, as shown in the diagram. Figure 5a As shown, the reference installation height of the fume purification equipment indicated by the second installation specification can be understood as the optimal vertical installation height of the fume purification equipment relative to the cooktop 30, or in other words, the standard vertical relative installation height between the cooktop 30 and the fume purification equipment. At this time, the field of view detection area of ​​the infrared temperature sensor 20 is located within the burner head 31 area of ​​the cooktop 30, and the center line 21 of the field of view detection area of ​​the infrared temperature sensor 20 just passes through the center point O of the burner head 31 area of ​​the cooktop 30. For example, Figure 5a The diagram shown can also be understood as a simplified positional relationship diagram when the fume purification equipment is in the first installation state. The reference installation height can include the reference distance c between the infrared temperature sensor 20 and the countertop of the stove 30 when the fume purification equipment is in the first installation state (that is, the length of line segment AB). Figure 5b This is a simplified positional diagram illustrating the maximum allowable height offset of an oil fume purification device relative to a reference installation height, as provided in this embodiment of the utility model. Figure 5bAs shown, the second installation specification indicates the maximum allowable height deviation of the fume purification device relative to the reference installation height. This maximum height deviation is the allowable deviation of the fume purification device relative to the cooktop 30 in the direction perpendicular to the plane of the cooktop 30. It can be understood as the maximum deviation between the reference installation height of the fume purification device and its final installation position in the plane perpendicular to the cooktop 30; or, based on the standard vertical relative installation height between the cooktop 30 and the fume purification device, the allowable vertical deviation range of the fume purification device. At this time, the field of view detection area of ​​the infrared temperature sensor 20 is located at a critical position within the burner head 31 area of ​​the cooktop 30. For example, Figure 5b The diagram shown can also be interpreted as a simplified positional relationship diagram when the fume purification equipment is in its second installation state. Figure 5a The installation height of the fume purification equipment shown is... Figure 5b The absolute value of the difference in installation height between the shown oil fume purification devices is equal to the maximum height offset. It should also be noted that... Figure 5a and Figure 5b In contrast, the same infrared temperature sensor 20 only has a vertical offset relative to the stove 30, with no horizontal offset.

[0051] In this way, the required installation height of the fume purification equipment on the corresponding mounting wall can be determined according to the second installation specification. The installation height detection unit 52 is used to detect the installation height of the fume purification equipment on the corresponding mounting wall, so that the detected installation height can be analyzed and compared with the reference installation height indicated by the second preset installation specification for the fume purification equipment, as well as the maximum allowable height deviation relative to the reference installation height. When the detected installation height meets the range corresponding to the maximum allowable height deviation of the reference installation height of the fume purification equipment, that is, when the detected installation height conforms to the second preset installation specification, a prompt indicating that the installation is in place is issued. At this point, the relevant installers can install the fume purification equipment on the mounting wall. At this installation height, the field of view detection area of ​​the infrared temperature sensor 20 is aligned with the burner head 31 area of ​​the stove 30, and the field of view detection area of ​​the infrared temperature sensor 20 is within the range of the burner head 31 area of ​​the stove 30.

[0052] Figure 6a and Figure 6b This is a schematic diagram showing the position of the field of view detection area of ​​two more infrared temperature sensors provided in this embodiment of the invention relative to the burner area of ​​the stove. Figure 6a and Figure 6bAs shown, the largest circle represents the burner head 31 area of ​​the stove 30. The first installation state is when the fume purification device is installed on the wall at the reference installation height. The circle with center point O can be understood as the field of view detection area of ​​the infrared temperature sensor 20 when the fume purification device is in the first installation state. The second installation state is when the fume purification device is installed on the wall at an installation height with a maximum height offset g relative to the reference installation height. The circle with center point O1 can be understood as the field of view detection area of ​​the infrared temperature sensor 20 when the fume purification device is in the second installation state. It should also be noted that the size of the field of view angle of the infrared temperature sensor 20 does not change with the actual installation height of the fume purification device, but the size and position of the field of view detection area of ​​the infrared temperature sensor 20 will change with the actual installation height of the fume purification device. Therefore, the range of the field of view detection area of ​​the infrared temperature sensor 20 is not fixed during the installation of the fume purification device.

[0053] Continue to refer to Figure 6a and Figure 6b The maximum height offset g can be determined based on the distance between the center of the field of view detection area of ​​the infrared temperature sensor 20 with center point O and the center of the field of view detection area of ​​the infrared temperature sensor 20 with center point O1. The field of view detection area of ​​the infrared temperature sensor 20 with center point O1 cannot deviate beyond the burner 31 area of ​​the stove 30. Figure 6a and Figure 6b This can be understood as the relative installation situation of the fume purification equipment with upward and downward offsets relative to the reference installation height. Figure 6a Taking this as an example, it is clear that j / 2 = k1 + L. Similarly, using... Figure 6b Taking this as an example, it is clear that j / 2 = k1 + L, where j is the diameter of the area of ​​the burner head 31, k1 is the radius of the field of view detection area of ​​the infrared temperature sensor 20 with center point O1, and L is the offset of the center of the field of view detection area of ​​the infrared temperature sensor 20 when the fume purification equipment is in the second installation state, relative to the center of the field of view detection area of ​​the infrared temperature sensor 20 when the fume purification equipment is in the first installation state; that is, L is the distance between center point O1 and center point O. And... Figure 7 This is a schematic diagram of the field of view detection area and field of view angle of another infrared temperature sensor provided in this embodiment of the present invention, as shown below. Figure 7As shown, the field of view detection area of ​​the infrared temperature sensor 20 is clearly similar in shape to a searchlight, which can be understood as conical. When the fume purification device is in its first installation state, the diameter of the field of view detection area of ​​the infrared temperature sensor 20 is f0, and the radius is k0 = f0 / 2. When the fume purification device is in its second installation state, the diameter of the field of view detection area of ​​the infrared temperature sensor 20 is f1, and the radius is k1 = f1 / 2. The field of view angle of the infrared temperature sensor 20 is 2α0, and half of the field of view angle is α0. The size of the field of view angle of the infrared temperature sensor 20 does not change with the radius of its field of view detection area, nor does it change with the length of the line connecting the center of the infrared temperature sensor 20 and the corresponding burner head 31. It can be clearly obtained that k0 = d0 × tanα0 and k1 = d1 × tanα0. That is, k1 and L can be determined using the field of view 2α0 of the infrared temperature sensor 20, the length d0 of the line connecting the center of the infrared temperature sensor 20 and the corresponding burner head 31 when the fume purification equipment is in the first installation state, and the length d1 of the line connecting the center of the infrared temperature sensor 20 and the corresponding burner head 31 when the fume purification equipment is in the second installation state. This helps in determining the maximum height offset g. Furthermore, Figure 6a and Figure 6b As shown in the height position offset example, if the field of view of the infrared temperature sensor 20 extends beyond the burner head 31 area of ​​the stove 30, then the field of view of the infrared temperature sensor 20 will at least partially detect the temperature of the external area of ​​the cooking pot 40 (such as the temperature of the flame or countertop), thus causing the detected temperature to not accurately reflect the actual internal temperature of the pot 40. Of course, Figure 6a and Figure 6b The relative positional offset between center point O and center point O1 shown is only an example. It may also include offsets in other horizontal directions, which will not be illustrated in this embodiment.

[0054] Optionally, the maximum height offset g is determined based on the following parameters: the reference distance a between the center point of the burner 31 and the wall where the fume purification device is installed; the reference distance b between the infrared temperature sensor 20 and the wall where the fume purification device is installed; the reference distance c between the infrared temperature sensor 20 and the countertop of the cooktop 30; the reference offset z of the infrared temperature sensor 20 along the first direction X relative to the center of the corresponding burner 31; and the radius k0 of the field of view detection area of ​​the infrared temperature sensor 20 when the fume purification device is in the first installation state; wherein, the first direction X is the direction parallel to the line connecting the centers of the two burners 31 on the cooktop 30, and the first installation state is the state in which the fume purification device is installed on the mounting wall according to the reference installation height.

[0055] Among them, the reference distance a can be understood as the distance between the center point of the burner 31 and the mounting wall in the second direction Y, the reference distance b can be understood as the distance between the infrared temperature sensor 20 and the mounting wall in the second direction Y, the reference distance c can be understood as the distance between the infrared temperature sensor 20 and the countertop of the stove 30 in the third direction Z, and the reference offset z can be understood as the distance between the infrared temperature sensor 20 and the center of the corresponding burner 31 in the first direction X.

[0056] Continue to refer to Figure 1 Infrared temperature sensor 20 can be point A, and the center point of burner head 31 can be point O. Point O is also the center point of the field of view detection area of ​​infrared temperature sensor 20 when the fume purification equipment is in its first installation state. The length d0 of the line connecting infrared temperature sensor 20 and the center of the corresponding burner head 31 when the fume purification equipment is in its first installation state can be line segment AO. This allows us to obtain... and then, Furthermore, it should be noted that the field of view of the infrared temperature sensor 20 when the fume purification equipment is in its first installation state is 2α0, and the field of view of the infrared temperature sensor 20 when the fume purification equipment is in its second installation state is also 2α0. Figure 7 This example only illustrates that k1 > k0 and d1 > d0. In other embodiments, k1 < k0 and d1 < d0 can also be used. This embodiment will not provide examples of each of these.

[0057] Optionally, Figure 8a yes Figure 6a The diagram shows the triangular similarity between the field of view detection area of ​​the infrared temperature sensor and the burner area of ​​the stove. Figure 1 , Figure 6a and Figure 8aAs shown, the center point of the burner head 31 can be point O, which is also the center point of the field of view detection area of ​​the infrared temperature sensor 20 when the fume purification device is in the first installation state. The infrared temperature sensor 20 can be point A, and the vertical projection point of the infrared temperature sensor 20 on the countertop of the stove 30 can be point B. The center point of the field of view detection area of ​​the infrared temperature sensor 20 when the fume purification device is in the second installation state can be point O1, and the position point corresponding to the installation height of the infrared temperature sensor 20 when the fume purification device is in the second installation state can be point P. The reference distance a between the center point of the burner head 31 and the wall where the fume purification device is installed can be line segment OD, the reference distance b between the infrared temperature sensor 20 and the wall where the fume purification device is installed can be line segment CD, the reference distance c between the infrared temperature sensor 20 and the countertop of the stove 30 can be line segment AB, the reference offset z of the infrared temperature sensor 20 along the first direction X relative to the center of the corresponding burner head 31 can be line segment BC, and the maximum height offset g can be line segment AP.

[0058] Furthermore, triangle OAB can be understood as a schematic diagram of the triangular relationship when the fume purification equipment is in its first installation state, and triangle O1PB can be understood as a schematic diagram of the triangular relationship when the fume purification equipment is in its second installation state. Figure 8a It is evident from the diagram that triangles OAB and O1PB are similar triangles. Therefore, line segment AB / line segment PB = line segment AO / line segment PO1. Here, line segment AB is c, line segment PB is c+g, and line segment AO is the length d0 of the line connecting the center of the infrared temperature sensor 20 and the corresponding burner head 31 when the fume purification equipment is in its first installation state. Line segment PO1 represents the length d1 of the line connecting the center of the infrared temperature sensor 20 and the corresponding burner head 31 when the fume purification equipment is in its second installation state. That is, Similarly, line segment AB / line segment PB = line segment OB / line segment O1B. Where line segment AB is c, line segment PB is c+g, line segment OB forms right triangles with line segments BC and OC respectively, and line segment BC is z. Line segment OC = line segment CD - line segment OD = ba, then line segment OB is... Line segment O1B = line segment OB + line segment OO1, where line segment OO1 is the offset L of the center of the field of view detection area of ​​the infrared temperature sensor 20 when the fume purification equipment is in the second installation state, relative to the center of the field of view detection area of ​​the infrared temperature sensor 20 when the fume purification equipment is in the first installation state. That is,

[0059] Furthermore, j / 2 = k1 + L, k1 = d1 × tanα0, then That is, the maximum height offset g satisfies: g = f -1 (j). Among these, the reference distance *a* between the center point of the burner head 31 and the wall where the fume purification equipment is installed, the reference distance *b* between the infrared temperature sensor 20 and the wall where the fume purification equipment is installed, the reference distance *c* between the infrared temperature sensor 20 and the countertop of the stove 30, and the reference offset *z* of the infrared temperature sensor 20 along the first direction X relative to the center of the corresponding burner head 31 are all design parameters and are constants. The radius *k0* of the field of view detection area of ​​the infrared temperature sensor 20 when the fume purification equipment is in the first installation state is a set value, which can also be understood as a known value. The maximum height offset *g* is a variable; that is, the diameter *j* of the burner head 31 area can be understood as a function of the maximum height offset *g*, *j* = *f(g)*. Once the value of the diameter *j* of the burner head 31 area is set, it can be determined using the inverse function *g* = *f(g)*. -1 (j) Calculate the value of the maximum height offset g in reverse. Then, the oil fume purification equipment can be installed according to the value of the maximum height offset g to ensure that the actual installation height of the oil fume purification equipment can meet the temperature detection accuracy requirements of the infrared temperature sensor 20.

[0060] Similarly, Figure 8b yes Figure 6b The diagram shows the triangular similarity between the field of view detection area of ​​the infrared temperature sensor and the burner area of ​​the stove. Figure 1 , Figure 6b and Figure 8b As shown, it can also be obtained The same content will not be repeated.

[0061] Based on the aforementioned installation position feedback device's detection process of the horizontal installation position and / or installation height of the fume purification equipment on the corresponding mounting wall and its prompting for proper installation, this embodiment provides an example of the specific position of the infrared temperature sensor on the fume hood. This is merely an example of the specific position of the infrared temperature sensor on the fume hood; the specific position of the installation position feedback device on the fume hood can be reasonably set as needed, and is not illustrated or described here.

[0062] Optionally, Figure 9 and Figure 10 These are structural schematic diagrams of two more oil fume purification devices and stoves provided in this utility model embodiment, as shown below. Figure 9 and Figure 10 As shown, the infrared temperature sensor 20 is located on the side of the fume hood 10 facing the cooktop 30 and is set close to the corresponding mounting wall. At this time, the reference distance b between the infrared temperature sensor 20 and the wall where the fume purification equipment is installed is 0.

[0063] Optionally, Figures 11-14 These are structural schematic diagrams of four more oil fume purification devices and stoves provided in this utility model embodiment, such as... Figures 11-14 As shown, the first line connecting the projection of the infrared temperature sensor 20 onto the plane of the stove 30 and the center of the burner head 31 is perpendicular to the wall where the fume purification equipment is installed. At this time, the reference offset z of the infrared temperature sensor 20 along the first direction X relative to the center of the corresponding burner head 31 is 0.

[0064] Optionally, Figure 15 and Figure 16 These are structural schematic diagrams of two more oil fume purification devices and stoves provided in this utility model embodiment, as shown below. Figure 15 and Figure 16 As shown, the distance between the infrared temperature sensor 20 and the wall where the fume purification equipment is installed is equal to the distance between the center of the burner head 31 of the stove 30 and the wall where the fume purification equipment is installed. At this time, the reference distance a between the center point of the burner head 31 and the wall where the fume purification equipment is installed is equal to the reference distance b between the infrared temperature sensor 20 and the wall where the fume purification equipment is installed, that is, a = b.

[0065] Optionally, Figures 17-19 These are structural schematic diagrams of three more oil fume purification devices and stoves provided in this utility model embodiment, as shown below. Figures 17-19 As shown, the infrared temperature sensor 20 is installed on the side of the smoke hood 10 facing the burner 31 of the stove 30 and is positioned towards the burner 31.

[0066] The above description of this embodiment only discusses the correspondence between the infrared temperature sensor 20 and the corresponding burner head 31, but does not specify the number of infrared temperature sensors 20. Optionally, please refer to... Figure 1 , Figure 9 , Figures 11-15 The stove 30 is equipped with two burners 31, and the smoke hood 10 is equipped with two infrared temperature sensors 20. The two infrared temperature sensors 20 are respectively facing the two burners 31. In the first direction X, the two infrared temperature sensors 20 are respectively located on the two burners 31 facing away from each other. The first direction X is parallel to the line connecting the centers of the two burners 31 on the stove 30.

[0067] Specifically, Figure 1 , Figure 9 , Figure 11 , Figure 14 , Figure 15 The fume purification device shown is a top-mounted range hood. Figure 12 The fume purification device shown is a side-suction range hood. Figure 13The fume purification device shown is an integrated range hood and stove unit. The distribution of the two infrared temperature sensors 20 in this fume purification device can be understood as a separate topology structure, that is, the infrared temperature sensor 20 on the left and the infrared temperature sensor 20 on the right are set separately. The field of view of the infrared temperature sensor 20 on the left is aligned with the area of ​​the stove 31 on the left, and the infrared temperature sensor 20 on the right is aligned with the area of ​​the stove 31 on the right, and the infrared temperature sensor 20 on the right is aligned with the area of ​​the stove 31 on the right.

[0068] Optionally, continue to refer to Figure 10 , Figures 16-19 The stove 30 is equipped with two burners 31, and the smoke hood 10 is equipped with two infrared temperature sensors 20. The two infrared temperature sensors 20 are respectively facing the two burners 31. The two infrared temperature sensors 20 are arranged adjacent to each other and are located in the middle of the two burners 31 in the first direction X. The first direction X is parallel to the line connecting the centers of the two burners 31 on the stove 30.

[0069] Specifically, Figure 10 , Figure 16 , Figure 17 The fume purification device shown is a top-mounted range hood. Figure 18 The fume purification device shown is an integrated range hood and stove unit. Figure 19 The fume purification device shown is a side-suction range hood. The distribution of the two infrared temperature sensors 20 in this fume purification device can be understood as a centralized topology structure. That is, the infrared temperature sensor 20 on the left and the infrared temperature sensor 20 on the right are placed together in a centralized manner. The field of view of the infrared temperature sensor 20 on the left is aligned with the burner 31 area on the left, and the infrared temperature sensor 20 on the right is aligned with the burner 31 area on the right, and the infrared temperature sensor 20 on the right is aligned with the burner 31 area on the right, and the infrared temperature sensor 20 on the right is aligned with the burner 31 area on the right.

[0070] Note that the above description is merely a preferred embodiment of the present invention and the technical principles employed. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and various obvious changes, readjustments, combinations, and substitutions can be made without departing from the scope of protection of the present invention. Therefore, although the present invention has been described in detail through the above embodiments, the present invention is not limited to the above embodiments. Many other equivalent embodiments may be included without departing from the concept of the present invention, and the scope of the present invention is determined by the scope of the appended claims.

Claims

1. An oil fume purification device, characterized in that, include: A smoke hood, used for installation above the stove; An infrared temperature sensor is installed on the side of the smoke hood facing the burner of the stove and is positioned towards the burner; the field of view of the infrared temperature sensor is aligned with the burner area to detect the temperature near the corresponding burner area. The installation position feedback device is used to detect the installation position of the fume purification equipment on the corresponding installation wall, and to provide a prompt when the installation position meets the preset installation specifications, so that the field of view detection area of ​​the infrared temperature sensor is aligned with the burner area, and the field of view detection area is within the range of the burner area; The preset installation specifications are used to indicate the reference installation position of the fume purification equipment and the maximum allowable offset of the fume purification equipment relative to the reference installation position.

2. The oil fume purification equipment according to claim 1, characterized in that, The installation position feedback device includes a horizontal installation position detection unit, which is set on the side of the fume hood facing the stove, and is used to detect the horizontal installation position of the fume purification equipment on the corresponding installation wall. The preset installation specifications include a first installation specification; the first installation specification is used to indicate the reference horizontal installation position of the fume purification equipment and the maximum horizontal offset of the fume purification equipment relative to the reference horizontal installation position, wherein the maximum horizontal offset is the allowable offset of the fume purification equipment relative to the stove in any direction parallel to the plane of the stove.

3. The oil fume purification equipment according to claim 2, characterized in that, The maximum horizontal offset t is determined based on the following parameters: The field of view of the infrared temperature sensor is 2α0; The reference distance 'a' between the center point of the burner head and the wall on which the fume purification equipment is installed; The reference distance b between the infrared temperature sensor and the wall on which the fume purification equipment is installed; The reference distance c between the infrared temperature sensor and the countertop of the stove; The infrared temperature sensor is offset by a reference amount z along a first direction relative to the center of the corresponding furnace head; and, The diameter j of the furnace head area; Wherein, the first direction is the direction parallel to the line connecting the centers of the two burners on the stove.

4. The oil fume purification equipment according to claim 1, characterized in that, The installation position feedback device includes an installation height detection unit, which is located on the side of the fume hood facing the stove, and is used to detect the installation height of the fume purification equipment on the corresponding mounting wall; the installation height is based on the height of the infrared temperature sensor relative to the stove. The preset installation specifications include a second installation specification; the second installation specification is used to indicate the reference installation height of the fume purification equipment and the maximum allowable height offset of the fume purification equipment relative to the reference installation height, wherein the maximum height offset is the allowable offset of the fume purification equipment relative to the stove in a direction perpendicular to the plane where the stove is located.

5. The oil fume purification equipment according to claim 4, characterized in that, The maximum height offset g is determined based on the following parameters: The reference distance 'a' between the center point of the burner head and the wall on which the fume purification equipment is installed; The reference distance b between the infrared temperature sensor and the wall on which the fume purification equipment is installed; The reference distance c between the infrared temperature sensor and the countertop of the stove; The infrared temperature sensor is offset by a reference amount z along a first direction relative to the center of the corresponding furnace head; and, The radius k0 of the field of view detection area of ​​the infrared temperature sensor when the fume purification equipment is in the first installation state; Wherein, the first direction is the direction parallel to the center line connecting the two burners on the stove, and the first installation state is the state in which the oil fume purification device is installed on the mounting wall according to the reference installation height.

6. The oil fume purification equipment according to claim 1, characterized in that, The infrared temperature sensor is located on the side of the fume hood facing the stove and is mounted close to the corresponding wall surface; or, The first line connecting the projection of the infrared temperature sensor onto the plane of the stove and the center of the burner head is perpendicular to the wall where the fume purification device is installed; or... The distance between the infrared temperature sensor and the wall where the fume purification device is installed is equal to the distance between the center of the stove burner and the wall where the fume purification device is installed.

7. The oil fume purification equipment according to claim 1, characterized in that, The stove is equipped with two burners, and the smoke hood is equipped with two infrared temperature sensors, with the two infrared temperature sensors facing the two burners respectively. In a first direction, the two infrared temperature sensors are located on opposite sides of the two burners; wherein, the first direction is parallel to the line connecting the centers of the two burners on the stove.

8. The oil fume purification equipment according to claim 1, characterized in that, The stove is equipped with two burners, and the smoke hood is equipped with two infrared temperature sensors, with the two infrared temperature sensors facing the two burners respectively. The two infrared temperature sensors are arranged adjacent to each other and are both located in the middle of the two burners in a first direction; wherein, the first direction is parallel to the line connecting the centers of the two burners on the stove.

9. The oil fume purification equipment according to claim 1, characterized in that, The installation position feedback device includes a detection module, a controller, and a prompting module; the controller is electrically connected to both the detection module and the prompting module. The detection module is configured to detect the installation position of the fume purification equipment on the corresponding mounting wall. The controller is configured to control the prompt module to provide a prompt when the installation location meets the preset installation specifications.

10. The oil fume purification equipment according to claim 9, characterized in that, The detection module includes a horizontal installation position detection unit and / or an installation height detection unit; The horizontal installation position detection unit is an image sensor, and the installation height detection unit is an infrared ranging sensor.

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