Installation method of lampblack purification equipment

Abstract

The embodiment of the invention discloses an installation method of oil fume purification equipment, which comprises the following steps: determining the installation height of the oil fume purification equipment on an installation wall surface according to a first installation specification so as to install the oil fume purification equipment on the installation wall surface; the mounting height is based on the height of the infrared temperature sensor relative to the stove; wherein under the installation height, the view field detection area is located within the range of the furnace end area; the first installation specification is used for indicating the reference installation height of the oil smoke purification equipment and the allowable maximum height offset of the oil smoke purification equipment relative to the reference installation height, and under the first installation specification, the absolute value of the difference between the installation height and the reference installation height does not exceed the maximum height offset. According to the installation method, the maximum height offset of the oil smoke purification equipment relative to the kitchen range can be determined according to the actual application scene and the installation scene of a user, humanized installation can be achieved, and the installation requirement of the user is met.

Description

TECHNICAL FIELD

[0001] The embodiment of the present application relates to the technical field of smart home, in particular to an installation method of an oil fume purification device. BACKGROUND

[0002] With the improvement of living standards, as a common kitchen appliance for purifying kitchen environment, the smoke machine rapidly extracts and discharges the waste gas generated at the stove and the oil fume generated in the cooking process, reduces indoor oil fume pollution, and achieves the purpose of purifying kitchen air and improving user cooking comfort.

[0003] At present, the smoke machine with infrared temperature measurement function can monitor the temperature of the pot on the stove burner through the infrared temperature sensor, and automatically control the smoke machine according to the temperature change generated by the user cooking, so the accuracy of temperature measurement is one of the important factors affecting the automatic control of the smoke machine. When the smoke machine is used with the stove, the relative installation position between the stove and the smoke machine in the height direction, if the offset amount of the installation height of the smoke machine relative to the stove is too large, it will also cause the pot to deviate from the detection field of view of the infrared temperature sensor and appear temperature measurement deviation, which ultimately affects the automatic control of the smoke machine, so the offset amount in the vertical direction of the installation height of the smoke machine relative to the stove is one of the important factors affecting the automatic control of the smoke machine.

[0004] However, the height offset of the general smoke machine relative to the stove is defined as ±50mm, but this height offset may not meet the installation needs of all users. At the same time, for the smoke machine with infrared temperature measurement function, to meet the accuracy of infrared temperature measurement, the offset amount of ±50mm may not be suitable, and may be too large, which may not meet the accuracy of temperature measurement, and ultimately affect the automatic control of the smoke machine. SUMMARY

[0005] The embodiment of the present application provides an installation method of an oil fume purification device, which can determine the maximum height offset of the oil fume purification device relative to the stove according to the actual application scene and installation scene of the user, and can achieve personalized installation and meet the installation needs of the user.

[0006] The embodiment of the present application provides an installation method of an oil fume purification device, which includes a smoke collecting hood and an infrared temperature sensor; the smoke collecting hood is arranged above the stove; the infrared temperature sensor is arranged on one side of the smoke collecting hood facing the burner of the stove and is arranged towards the burner, and a field of view detection area of the infrared temperature sensor is aligned with the burner area for detecting the temperature near the corresponding burner area.

[0007] The installation method comprises:

[0008] The installation height of the fume purification equipment on the wall should be determined according to the first installation specification, so as to install the fume purification equipment on the wall; the installation height is based on the height of the infrared temperature sensor relative to the stove.

[0009] At the installation height, the field of view detection area is located within the furnace head area;

[0010] The first 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. Under the first installation specification, the absolute value of the difference between the installation height and the reference installation height shall not exceed the maximum height deviation.

[0011] This invention provides an installation method for an oil fume purification device. This method determines the maximum height offset of the oil fume purification device relative to the cooktop based on the user's actual application and installation scenarios. During installation, the user can independently select the relative height offset between the cooktop and the oil fume purification device, achieving user-friendly installation and meeting user needs. It also ensures that the infrared temperature sensor's field of view does not deviate from 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 guarantees a good cooking experience and user comfort.

[0012] It should be understood that the description in this section is not intended to identify key or essential features of the embodiments of the present invention, nor is it intended to limit the scope of the invention. Other features of the invention will become readily apparent from the following description. Attached Figure Description

[0013] Figure 1 This is a structural schematic diagram of an oil fume purification device and a stove provided in an embodiment of the present invention;

[0014] Figure 2 This is a flowchart illustrating an installation method for an oil fume purification device provided in an embodiment of the present invention;

[0015] Figure 3a This is a simplified positional relationship diagram of the reference installation height of an oil fume purification device provided in an embodiment of the present invention;

[0016] Figure 3b This is a simplified positional relationship diagram of the maximum height offset of an oil fume purification device relative to a stove provided in an embodiment of the present invention;

[0017] Figure 4 This is a schematic diagram showing the position of the field of view detection area of ​​an infrared temperature sensor and the burner area of ​​a stove, according to an embodiment of the present invention.

[0018] Figure 5 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 the present invention;

[0019] Figure 6 yes Figure 4 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.

[0020] Figure 7 This is a schematic diagram showing the position of the field of view detection area of ​​another infrared temperature sensor provided in this embodiment of the invention and the burner area of ​​the stove.

[0021] Figure 8 yes Figure 7 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 9 This is a schematic diagram of another oil fume purification device and stove provided in an embodiment of the present invention;

[0023] Figure 10 This is a schematic diagram showing the position of the field of view detection area of ​​another infrared temperature sensor provided in this embodiment of the invention and the burner area of ​​the stove.

[0024] Figure 11 yes Figure 10 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.

[0025] Figure 12 This is a schematic diagram showing the position of the field of view detection area of ​​another infrared temperature sensor provided in this embodiment of the invention and the burner area of ​​the stove.

[0026] Figure 13 yes Figure 12 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.

[0027] Figure 14 This is a structural schematic diagram of another oil fume purification device and stove provided in an embodiment of the present invention;

[0028] Figure 15 This is a schematic diagram showing the position of the field of view detection area of ​​another infrared temperature sensor provided in this embodiment of the invention and the burner area of ​​the stove.

[0029] Figure 16 yes Figure 15 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.

[0030] Figure 17This is a schematic diagram showing the position of the field of view detection area of ​​another infrared temperature sensor provided in this embodiment of the invention and the burner area of ​​the stove.

[0031] Figure 18 yes Figure 17 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. Detailed Implementation

[0032] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of the present invention.

[0033] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this invention are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of the invention described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0034] Regarding the installation of the fume purification equipment in this embodiment of the invention, it should be noted that the equipment can be installed on a wall (e.g., a kitchen wall). The equipment is generally used in conjunction with a cooktop. The vertical deviation of the equipment's installation height from the reference installation height has certain requirements. If, after installation, the actual installation height of the equipment is small compared to the reference height, the infrared temperature sensor's detection field of view remains within the burner or cookware on the cooktop, indicating normal temperature detection and good automatic control. Conversely, if the actual installation height is large, the infrared temperature sensor's detection field of view will deviate from the burner or cookware, reducing the accuracy of temperature detection and resulting in poor automatic control.

[0035] For example,Figure 1 This is a structural schematic diagram of an oil fume purification device and a stove provided in an embodiment of the present invention, as shown below. Figure 1 As shown, 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. During installation, the fume hood 10 is positioned above the cooktop 30, and the infrared temperature sensor 20 is positioned on the side of the fume hood 10 facing the burner 31 of the cooktop 30, ensuring that the field of view of the infrared temperature sensor 20 is aligned with the burner 31 area of ​​the cooktop 30. For example, the center line 21 of the field of view of the infrared temperature sensor 20 can pass through the center point of the burner 31 area of ​​the cooktop 30. For example, the infrared temperature sensor 20 and the burner 31 can have a one-to-one correspondence; that is, the infrared temperature sensor 20 can be positioned corresponding to one burner 31 below the fume purification device. In this way, the infrared temperature sensor 20 can detect the temperature near the corresponding burner 31 area (which usually corresponds to the area inside the cooking pot 40), and the infrared temperature sensor 20 has high temperature detection accuracy at this time. Therefore, it can accurately detect the temperature inside the cooking pot 40, and determine the cooking stage based on the corresponding temperature, so as to control the oil fume purification equipment to work at the appropriate level and mode.

[0036] Figure 2 This is a flowchart illustrating an installation method for an oil fume purification device according to an embodiment of the present invention, as shown below. Figure 2 As shown, the installation method includes:

[0037] S110. Determine the installation height of the fume purification equipment on the mounting wall according to the first installation specification, so as to install the fume purification equipment on the mounting wall; the installation height is based on the height of the infrared temperature sensor relative to the stove; wherein, at the installation height, the field of view detection area is located within the range of the burner area; the first 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, and under the first installation specification, the absolute value of the difference between the installation height and the reference installation height does not exceed the maximum height deviation.

[0038] Specifically, please refer to Figure 1The installation height of the fume purification equipment on the mounting wall can be determined according to the first installation specification, so that the fume purification equipment can be installed on the mounting wall. For example, the mounting wall can be a kitchen wall. At the determined installation height, the fume purification equipment is installed. After installation, the infrared temperature sensor 20 should be positioned facing the burner head 31 of the stove 30, so that the field of view detection area of ​​the infrared temperature sensor 20 is aligned with the burner head 31 area of ​​the stove 30. 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, further ensuring the accuracy of temperature detection by the infrared temperature sensor 20.

[0039] Furthermore, the first 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 actual installation height of the fume purification equipment relative to the reference installation height in the height / vertical direction. Under the first installation specification, the absolute value of the difference between the actual installation height of the fume purification equipment and the reference installation height of the fume purification equipment does not exceed the maximum height deviation. Figure 3a This is a simplified positional relationship diagram of the reference installation height of an oil fume purification device provided in an embodiment of the present invention, as shown in the figure. Figure 3a As shown, the reference installation height of the fume purification equipment can be understood as the optimal installation height between the fume purification equipment and the cooktop, or the standard relative installation height between the cooktop 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 can just pass through the center point O of the burner head 31 area of ​​the cooktop 30. Figure 3a The diagram shown can also be interpreted as a simplified positional relationship diagram of the fume purification equipment in its first installation state. For example, the reference installation height may include the reference distance c between the infrared temperature sensor 20 and the countertop of the cooktop 30 when the fume purification equipment is in its first installation state. Figure 3b This is a simplified positional diagram illustrating the maximum height offset of an oil fume purification device relative to a stove, as provided in an embodiment of the present invention. Figure 3b As shown, the maximum allowable height deviation of the fume purification equipment relative to the reference installation height can be understood as the maximum deviation between the reference installation height of the fume purification equipment and the determined offset installation height in the direction perpendicular to the plane where the cooktop 30 is located. In other words, it represents the vertical offset range of the cooktop 30 and the fume purification equipment based on the standard reference installation height. 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. Figure 3bThe diagram shown can also be interpreted as a simplified positional relationship diagram of the fume purification equipment in its second installation state. It should be noted that... Figure 3a and Figure 3b In contrast, the same infrared temperature sensor 20 only has a vertical offset relative to the stove 30, with no horizontal offset.

[0040] For example, the fume purification equipment may also be equipped with a height detection sensor, a controller, and a feedback unit. The height detection sensor is used to determine the actual installation height of the fume purification equipment; the controller is used to determine the actual height deviation based on the actual installation height and the reference installation height; and the feedback unit is used to provide corresponding prompt information when the actual height deviation exceeds the maximum height deviation. Then, based on the prompt information from the feedback unit, the fume purification equipment can be installed on the wall according to the first installation specification to ensure that the absolute value of the difference between the actual installation height and the reference installation height of the fume purification equipment meets the requirement of the maximum height deviation.

[0041] For example, the first installation specification corresponding to the fume purification equipment to be installed can be obtained by consulting the product installation manual of the preset installation specification table. The preset installation specification table can be understood as a pre-set installation instruction document. Different models of fume purification equipment have different installation requirements, i.e., different installation specifications. Users or installers of the fume purification equipment can determine the reference installation position of the fume purification equipment to be installed and the maximum allowable height deviation relative to the reference installation height by consulting the corresponding first installation specification, so as to better guide and carry out the installation process of the stove or fume purification equipment. For example, the first installation specification corresponding to the fume purification equipment to be installed can be obtained through preset installation specification software. The preset installation specification software can be understood as a preset installation demonstration program. The form of the installation demonstration program includes, but is not limited to, text, pictures, audio and video. It can be understood that different models of fume purification equipment have different installation requirements, that is, different installation specifications. Those skilled in the art can determine the reference installation position of the fume purification equipment to be installed and the allowable horizontal offset relative to the reference installation height by referring to the corresponding first installation specification, so as to better guide and carry out the installation process of the stove or fume purification equipment.

[0042] Furthermore, Figure 4 This is a schematic diagram showing the position of the field of view detection area of ​​an infrared temperature sensor and the burner area of ​​a stove, as provided in an embodiment of the present invention. Figure 4As 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 mounting wall at the reference installation height. The field of view detection area of ​​the infrared temperature sensor 20 when the fume purification device is in the first installation state can be understood as the area of ​​the solid circle with the center point O. The second installation state is when the fume purification device is installed on the mounting wall at an installation height with a maximum height offset g relative to the reference installation height. 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 understood as the area of ​​the dashed circle with the center point O1. Figure 5 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 the present invention, as shown below. Figure 5 As shown, it is clear that the field of view detection area of ​​the infrared temperature sensor 20 resembles a searchlight, which can be understood as conical. 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 equipment, 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 equipment. 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 equipment.

[0043] For example, in Figure 4 In the comparison, the field of view detection area of ​​the infrared temperature sensor 20 with center point O is compared with the field of view detection area of ​​the infrared temperature sensor 20 with center point O1. Taking the infrared temperature sensor 20 as an example... Figure 1 Taking the infrared temperature sensor 20 on the left as an example, as the actual installation height of the fume purification equipment increases, the field of view detection area of ​​the infrared temperature sensor 20 increases, and it moves towards the positive direction of the first direction X and the positive direction of the second direction Y. The maximum height deviation of the fume purification equipment relative to the reference installation height 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 head 31 area of ​​the stove 30. Alternatively, Figure 7 This is a schematic diagram showing the position of the field of view detection area of ​​another infrared temperature sensor provided in an embodiment of the present invention relative to the burner area of ​​the stove. Figure 7 The circles shown represent the meaning of... Figure 4 Similarly, exemplarily, in Figure 7 In the comparison, the field of view detection area of ​​the infrared temperature sensor 20 with center point O is compared with the field of view detection area of ​​the infrared temperature sensor 20 with center point O1. Taking the infrared temperature sensor 20 as an example... Figure 1Taking the infrared temperature sensor 20 on the left as an example, as the actual installation height of the fume purification equipment decreases, the field of view detection area of ​​the infrared temperature sensor 20 decreases, and it moves in the negative direction of the first direction X and the negative direction of the second direction Y. The maximum height deviation of the fume purification equipment relative to the reference installation height 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 head 31 area of ​​the stove 30. Figure 4 and Figure 7 This can be understood as two different offset scenarios in the installation height direction of the fume purification equipment: upward and downward offset. Under the above height offset scenario, if the field of view of the infrared temperature sensor 20, with its center point O1, extends beyond the burner head 31 area of ​​the cooktop 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.

[0044] The technical solution in this embodiment of the invention allows the installation method to determine the maximum height offset of the fume purification device relative to the stove based on the user's actual application and installation scenarios. During the installation phase of the fume purification device, the user can independently select the relative installation height offset between the stove and the fume purification device, achieving user-friendly installation and meeting the user's installation needs. It also ensures that the field of view detection area of ​​the infrared temperature sensor does not deviate from the burner area of ​​the stove, effectively improving the temperature measurement accuracy of the infrared temperature sensor, thereby improving the automatic control effect of the fume purification device and ensuring a good cooking experience and user comfort.

[0045] Optionally, continue to refer to Figure 4 and Figure 7 The diameter j of the furnace head area 31 satisfies: 24cm≤j≤30cm.

[0046] Specifically, the most commonly used cookware 40 in households includes woks, steamers, and frying pans. The diameter of a commonly used wok is 30cm, a steamer is 26cm, and a frying pan is 24cm. That is, the diameter of the wok > the diameter of the steamer > the diameter of the frying pan. The cookware 40 is placed on the burner head 31. The diameter j of the burner head 31 area can be determined based on the diameter of the cookware 40 frequently used by the user. For example, if the area of ​​the burner head 31 meets the temperature detection requirements of the corresponding infrared temperature sensor 20, it means that the position of the cookware 40 on the burner head 31 also meets the temperature detection requirements of the corresponding infrared temperature sensor 20.

[0047] Optionally, continue to refer to Figure 4 and Figure 7 The maximum height offset g is determined based on the following parameters: the radius k1 of the field of view detection area of ​​the infrared temperature sensor 20 when the fume purification device is in the second installation state; the offset L of the center of the field of view detection area of ​​the infrared temperature sensor 20 when the fume purification device 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 device is in the first installation state; and the diameter j of the burner head 31 area; wherein, the first installation state is the state in which the fume purification device is installed on the mounting wall at a reference installation height, and the second installation state is the state in which the fume purification device is installed on the mounting wall at an installation height with a maximum height offset g relative to the reference installation height.

[0048] For example, the field of view detection area of ​​the infrared temperature sensor 20 when the fume purification equipment is in the first installation state can be understood as a solid circle with a center point of O, and the field of view detection area of ​​the infrared temperature sensor 20 when the fume purification equipment is in the second installation state can be understood as a dashed circle with a center point of O1. Specifically, when there is a height offset of the fume purification equipment relative to the reference installation height, the height of the infrared temperature sensor 20 is not fixed, the field of view angle of the infrared temperature sensor 20 is fixed, and therefore the range of the field of view detection area of ​​the infrared temperature sensor 20 is not fixed.

[0049] Figure 4As shown in the positional offset diagram, it is clear that j / 2 = k1 + L, meaning the radius of the burner head 31 area is equal to the sum of k1 and L. Comparing the field of view detection area of ​​the infrared temperature sensor 20 with its center point O and the field of view detection area of ​​the infrared temperature sensor 20 with its center point O1, as the actual installation height of the fume purification equipment increases, the maximum height offset of the fume purification equipment relative to the reference installation height also increases; that is, the difference between the actual installation height of the fume purification equipment and the reference installation height also increases. The center point of the circle corresponding to the field of view detection area of ​​the infrared temperature sensor 20 changes from point O to point O1. The maximum height offset g of the fume purification device relative to the reference installation height is related to the height of the infrared temperature sensor 20. The height of the infrared temperature sensor 20 affects the size of its field of view detection area; that is, the height of the infrared temperature sensor 20 is related to the radius k1 of its field of view detection area. Furthermore, the change in the height of the infrared temperature sensor 20 and the change in the center point of the circle corresponding to its field of view detection area have a triangular similarity relationship. Specifically, the height of the infrared temperature sensor 20 is related to the offset L of the center of its field of view detection area when the fume purification device is in the second installation state, relative to the center of its field of view detection area when the fume purification device is in the first installation state. Based on this, the field of view detection area of ​​the infrared temperature sensor 20 cannot exceed the area of ​​the burner head 31 of the stove 30; that is, the height of the infrared temperature sensor 20 is related to the diameter j of the burner head 31 area. Thus, the maximum height offset g of the fume purification device relative to the reference installation height can be determined based on the radius k1 of the field of view detection area of ​​the infrared temperature sensor 20 when the fume purification device is in the second installation state, the offset L of the center of the field of view detection area of ​​the infrared temperature sensor 20 when the fume purification device 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 device is in the first installation state, and the diameter j of the burner head 31 area.

[0050] same, Figure 7As shown in the positional offset diagram, it is clear that j / 2 = k1 + L, meaning the radius of the burner head 31 area is equal to the sum of k1 and L. Comparing the field of view detection area of ​​the infrared temperature sensor 20 with its center point O and the field of view detection area of ​​the infrared temperature sensor 20 with its center point O1, as the actual installation height of the fume purification equipment decreases, the maximum height offset of the fume purification equipment relative to the reference installation height also decreases; that is, the difference between the actual installation height of the fume purification equipment and the reference installation height also increases. The center point of the circle corresponding to the field of view detection area of ​​the infrared temperature sensor 20 changes from point O to point O1. The maximum height offset g of the fume purification device relative to the reference installation height is related to the height of the infrared temperature sensor 20. The height of the infrared temperature sensor 20 affects the size of its field of view detection area; that is, the height of the infrared temperature sensor 20 is related to the radius k1 of its field of view detection area. Furthermore, the change in the height of the infrared temperature sensor 20 and the change in the center point of the circle corresponding to its field of view detection area have a triangular similarity relationship. Specifically, the height of the infrared temperature sensor 20 is related to the offset L of the center of its field of view detection area when the fume purification device is in the second installation state, relative to the center of its field of view detection area when the fume purification device is in the first installation state. Based on this, the field of view detection area of ​​the infrared temperature sensor 20 cannot exceed the area of ​​the burner head 31 of the stove 30; that is, the height of the infrared temperature sensor 20 is related to the diameter j of the burner head 31 area. Thus, the maximum height offset g of the fume purification device relative to the reference installation height can be determined based on the radius k1 of the field of view detection area of ​​the infrared temperature sensor 20 when the fume purification device is in the second installation state, the offset L of the center of the field of view detection area of ​​the infrared temperature sensor 20 when the fume purification device 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 device is in the first installation state, and the diameter j of the burner head 31 area.

[0051] Optionally, continue to refer to Figure 4 and Figure 5 The radius k1 of the field of view detection area of ​​the infrared temperature sensor 20 when the fume purification equipment is in the second installation state is determined based on the following parameters: the field of view angle of the infrared temperature sensor 20 is 2α; 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.

[0052] Specifically, when the fume purification equipment 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 of the field of view detection area of ​​the infrared temperature sensor 20 is k1 = f1 / 2. Taking line segment MN as one of the diameters of the field of view detection area of ​​the infrared temperature sensor 20 in its second installation state as an example, the field of view angle of the infrared temperature sensor 20 is 2α, and half of the field of view angle of the infrared temperature sensor 20 is α. 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 infrared temperature sensor 20 and the center of the corresponding burner head 31. When the fume purification equipment is in its second installation state, k1 = d1 × tanα can be obtained. That is, by using the field of view angle of the infrared temperature sensor 20 as 2α 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, the radius k1 of the field of view detection area of ​​the infrared temperature sensor 20 when the fume purification equipment is in the second installation state can be determined, which is helpful in determining the maximum height offset g. 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 is also the center line 21 of the field of view detection area of ​​the infrared temperature sensor 20.

[0053] Optionally, continue to refer to Figure 1 and Figure 5 When the fume purification device is in the first installation state, the center point of the field of view of the infrared temperature sensor 20 is aligned with the center point of the burner head 31. The field of view angle 2α corresponding to the detection area of ​​the infrared temperature sensor 20 is determined based on the following parameters: the reference distance a between the center point of the burner head 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 head 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 stove 30.

[0054] Among them, the reference distance a can be understood as the distance between the center point of the burner 31 corresponding to the oil fume purification equipment when it is located in the reference installation position 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 corresponding to the oil fume purification equipment when it is located in the reference installation position 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 corresponding to the oil fume purification equipment when it is located in the reference installation position 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 corresponding to the oil fume purification equipment when it is located in the reference installation position and the center of the corresponding burner 31 in the first direction X.

[0055] Specifically, Figure 1 The diagram shown can be interpreted as a structural schematic of the fume purification equipment in its first installation state. 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 line segment OD. That is, the perpendicular line drawn from point O to the wall where the fume purification equipment is installed intersects with the wall where the fume purification equipment is installed at point D. In other words, line segment OD is perpendicular to the wall where the fume purification equipment is installed.

[0056] 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.

[0057] 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.

[0058] Infrared temperature sensor 20 can be point A, and the center point of burner head 31 can be point O. When the fume purification equipment is in its first installation state, the length d of the line connecting infrared temperature sensor 20 and the center of the corresponding burner head 31 can be line segment AO, from which we can obtain...

[0059] and then, The field of view angle 2α corresponding to the field of view detection area of ​​the infrared temperature sensor 20 when the fume purification equipment is in its first installation state can be determined based on the radius k0 of the detection area of ​​the infrared temperature sensor 20 and the length d of the line connecting the infrared temperature sensor 20 and the center of the corresponding burner head 31. That is, 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 2α, and the field of view of the infrared temperature sensor 20 when the fume purification equipment is in its second installation state is also 2α. The radius of the detection area of ​​the infrared temperature sensor 20 when the fume purification equipment is in its first installation state is k0, and the radius of the detection area of ​​the infrared temperature sensor 20 when the fume purification equipment is in its second installation state is k1. Figure 5 This example only illustrates that k1 > k0 and d1 > d. In other embodiments, k1 < k0 and d1 < d can also be used. This embodiment will not provide examples of each of these.

[0060] Optionally, Figure 6 yes Figure 4 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 and Figure 6 As shown, the length d1 of the line connecting the center of the infrared temperature sensor 20 and the corresponding burner 31 when the fume purification device is in the second installation state 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 maximum height offset g; wherein, the first direction X is parallel to the line connecting the centers of the two burners 31 on the cooktop 30.

[0061] Specifically, 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 equipment 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 equipment 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 equipment 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 equipment is installed can be line segment OD, the reference distance b between the infrared temperature sensor 20 and the wall where the fume purification equipment 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. For example, at this time, the value of the maximum height offset g is greater than 0.

[0062] 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 6 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 d 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,

[0063] Optionally, continue to refer to Figure 1 and Figure 6The 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, is determined based on the following parameters: the reference distance a between the center point of the burner 31 and the wall on which the fume purification equipment is installed; the reference distance b between the infrared temperature sensor 20 and the wall on which 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 maximum height offset g; wherein, the first direction X is parallel to the line connecting the centers of the two burners 31 on the cooktop 30.

[0064] Specifically, 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 6 It is clear from the diagram that triangles OAB and O1PB are similar triangles. Therefore, line segment AB / line segment PB = line segment OB / line segment O1B. Here, 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. Therefore, 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,

[0065] Optionally, continue to refer to Figure 1 , Figure 4 and Figure 6 When the infrared temperature sensor 20 of the fume purification equipment in the second installation state is located above the infrared temperature sensor 20 of the fume purification equipment in the first installation state, g > 0; the maximum height offset g satisfies: g = f -1 (j); where: a is the reference distance between the center point of the burner 31 and the wall where the fume purification equipment is installed; b is the reference distance between the infrared temperature sensor 20 and the wall where the fume purification equipment is installed; c is the reference distance between the infrared temperature sensor 20 and the countertop of the cooktop 30; z is the reference offset of the infrared temperature sensor 20 relative to the center of the burner 31 along the first direction X; and k0 is the radius of the field of view detection area of ​​the infrared temperature sensor 20 when the fume purification equipment 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.

[0066] For example, in Figure 4 In the diagram, the field of view of the infrared temperature sensor 20 when the fume purification equipment is in its first installation state can be understood as a solid circle with center point O, and the field of view of the infrared temperature sensor 20 when the fume purification equipment is in its second installation state can be understood as a dashed circle with center point O1. Specifically, the infrared temperature sensor 20 in the second installation state is located above the infrared temperature sensor 20 in the first installation state; that is, the height of the infrared temperature sensor 20 in the second installation state is higher than that in the first installation state. More easily understood, as the installation height of the fume purification equipment increases, the center point of the field of view of the infrared temperature sensor 20 changes from point O towards O1. At this time, the maximum height offset g > 0, indicating that the actual installation height of the fume purification equipment is greater than the reference installation height.

[0067] Figure 4 The positional offset shown clearly indicates that j / 2 = k1 + L, and k1 = d1 × tanα. but At this point, the maximum height offset g > 0. Among these, the reference distances a between the center point of the burner head 31 and the wall where the fume purification equipment is installed, b between the infrared temperature sensor 20 and the wall where the fume purification equipment is installed, c between the infrared temperature sensor 20 and the countertop of the stove 30, and 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 its 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.

[0068] Based on this, continue to refer to Figure 1 , Figure 4 and Figure 6 This fume purification device is a top-mounted range hood. If the user frequently uses woks, steamers, and frying pans, the diameter j of area 31 on the burner can be calculated based on the diameter of the frying pan (24cm). In this case, both the wok and steamer will meet the maximum height offset g range during use. The maximum height offset g can be calculated based on j = 24cm, i.e., g = f -1 (24). Thus, during the installation of the fume purification equipment, the difference between the actual installation height of the fume purification equipment and the reference installation height should be less than the value of the maximum height offset g.

[0069] If a user uses a frying pan relatively infrequently and frequently uses a wok and steamer, the frying pan can be omitted. In this case, the diameter j of area 31 on the stove can be calculated based on the diameter of the steamer (26cm). In this scenario, the wok will always meet the maximum height offset g range during use. The maximum height offset g can be calculated based on j = 26cm, i.e., g = f. -1 (26). Thus, during the installation of the fume purification equipment, the difference between the actual installation height of the fume purification equipment and the reference installation height should be less than the value of the maximum height offset g.

[0070] If a user uses frying pans and steamers infrequently and woks frequently, then the frying pan and steamer can be omitted. In this case, the diameter j of area 31 on the stove can be calculated based on the wok's diameter of 30cm. The maximum height offset g can be deduced from j = 30cm, i.e., g = f. -1(30). Thus, during the installation of the fume purification equipment, the difference between the actual installation height of the fume purification equipment and the reference installation height should be less than the value of the maximum height offset g.

[0071] Figure 4 and Figure 7 This can be understood as two different offset scenarios for the fume purification equipment: upward and downward offset in the installation height direction. Similarly, Figure 8 yes Figure 7 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 and Figure 8 As shown, the length d1 of the line connecting the center of the infrared temperature sensor 20 and the corresponding burner 31 when the fume purification device is in the second installation state 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 maximum height offset g; wherein, the first direction X is parallel to the line connecting the centers of the two burners 31 on the cooktop 30.

[0072] Specifically, 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 equipment 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 equipment 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 equipment 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 equipment is installed can be line segment OD, the reference distance b between the infrared temperature sensor 20 and the wall where the fume purification equipment 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. For example, at this time, the value of the maximum height offset g is less than 0, then m = -g, where m can be understood as the opposite of the maximum height offset g. The value of m is greater than 0, which is convenient for subsequent calculations.

[0073] 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 8 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 length c, line segment PB is length cm, and line segment AO is the length d 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, Replacing -m with g yields the following result:

[0074] Optionally, continue to refer to Figure 1 and Figure 8 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, is determined based on the following parameters: the reference distance a between the center point of the burner 31 and the wall on which the fume purification equipment is installed; the reference distance b between the infrared temperature sensor 20 and the wall on which 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 maximum height offset g; wherein, the first direction X is parallel to the line connecting the centers of the two burners 31 on the cooktop 30.

[0075] Specifically, 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 8 It is clear from the diagram that triangles OAB and O1PB are similar triangles. Therefore, line segment AB / line segment PB = line segment OB / line segment O1B. Here, line segment AB is c, line segment PB is cm, 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. Therefore, 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, Replacing -m with g yields the following result:

[0076] Optionally, continue to refer to Figure 1 , Figure 7 and Figure 8 When the infrared temperature sensor 20 of the fume purification equipment in the second installation state is located below the infrared temperature sensor 20 of the fume purification equipment in the first installation state, g < 0; the maximum height offset g satisfies: g = f -1 (j); where: a is the reference distance between the center point of the burner 31 and the wall where the fume purification equipment is installed; b is the reference distance between the infrared temperature sensor 20 and the wall where the fume purification equipment is installed; c is the reference distance between the infrared temperature sensor 20 and the countertop of the cooktop 30; z is the reference offset of the infrared temperature sensor 20 relative to the center of the burner 31 along the first direction X; and k0 is the radius of the field of view detection area of ​​the infrared temperature sensor 20 when the fume purification equipment 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.

[0077] For example, in Figure 7 In the diagram, the field of view of the infrared temperature sensor 20 in the first installation state of the fume purification equipment can be understood as a solid circle with center point O, and the field of view of the infrared temperature sensor 20 in the second installation state can be understood as a dashed circle with center point O1. Specifically, the infrared temperature sensor 20 in the second installation state is located below the infrared temperature sensor 20 in the first installation state; that is, the height of the infrared temperature sensor 20 in the second installation state is lower than the height of the infrared temperature sensor 20 in the first installation state. More easily understood, as the installation height of the fume purification equipment decreases, the center point of the field of view of the infrared temperature sensor 20 changes from point O towards O1. At this time, the maximum height offset g < 0, indicating that the actual installation height of the fume purification equipment is less than the reference installation height.

[0078] Figure 7 The positional offset shown clearly indicates that j / 2 = k1 + L, and... , but At this point, the maximum height offset g < 0. 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.

[0079] Based on this, continue to refer to Figure 1 , Figure 7 and Figure 8 This fume purification device is a top-mounted range hood. If the user frequently uses woks, steamers, and frying pans, the diameter j of area 31 on the burner can be calculated based on the diameter of the frying pan (24cm). In this case, both the wok and steamer will meet the maximum height offset g range during use. The maximum height offset g can be calculated based on j = 24cm, i.e., g = f. -1 (24), or g=f -1 (24). Thus, during the installation of the fume purification equipment, the difference between the actual installation height of the fume purification equipment and the reference installation height should be less than the value of the maximum height offset g.

[0080] If a user uses a frying pan relatively infrequently and frequently uses a wok and steamer, the frying pan can be omitted. In this case, the diameter j of area 31 on the stove can be calculated based on the diameter of the steamer (26cm). In this scenario, the wok will always meet the maximum height offset g range during use. The maximum height offset g can be calculated based on j = 26cm, i.e., g = f. -1 (26), or m = f -1 (26). Thus, during the installation of the fume purification equipment, the difference between the actual installation height of the fume purification equipment and the reference installation height should be less than the value of the maximum height offset g.

[0081] If a user uses frying pans and steamers infrequently and woks frequently, then the frying pan and steamer can be omitted. In this case, the diameter j of area 31 on the stove can be calculated based on the wok's diameter of 30cm. The maximum height offset g can be deduced from j = 30cm, i.e., g = f. -1 (30), or m = f -1 (30). Thus, during the installation of the fume purification equipment, the difference between the actual installation height of the fume purification equipment and the reference installation height should be less than the value of the maximum height offset g.

[0082] 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 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 spaced apart in the first direction X. The first direction X is parallel to the line connecting the centers of the two burners 31.

[0083] Specifically, Figure 1 The fume purification device shown is a top-mounted range hood. 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 is located directly above the corresponding burner 31 on the left and near the left outer side. The field of view of the infrared temperature sensor 20 on the left is aligned with the area of ​​the burner 31 on the left, and the infrared temperature sensor 20 on the right is located directly above the corresponding burner 31 on the right and near the right outer side. The field of view of the infrared temperature sensor 20 on the right is aligned with the area of ​​the burner 31 on the right, and the infrared temperature sensor 20 on the right is aligned with the area of ​​the burner 31 on the right, and the infrared temperature sensor 20 on the right is aligned with the area of ​​the burner 31 on the right, and the infrared temperature sensor 20 on the right is aligned with the area of ​​the burner 31 on the right.

[0084] Optionally, Figure 9 This is a schematic diagram of another oil fume purification device and stove provided in an embodiment of the present invention, as shown below. Figure 9 As shown, 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.

[0085] Specifically, Figure 9The fume purification device shown is a top-mounted 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, both located directly above the center of the stove 30 and slightly to the outside. 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.

[0086] Optionally, continue to refer to Figure 9 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 determined by the center distance e of the two burner heads 31.

[0087] Specifically, the two infrared temperature sensors 20 are arranged close to each other and are located in the middle of the two burners 31 in the first direction X. That is, the reference offset z of each infrared temperature sensor 20 relative to the center of the corresponding burner 31 along the first direction X can be approximately considered to be equal to half of the center distance e of the two burners 31, that is, z = e / 2.

[0088] Optionally, Figure 10 This is a schematic diagram showing the position of the field of view detection area of ​​another infrared temperature sensor provided in this embodiment of the invention relative to the burner area of ​​the stove. Figure 11 yes Figure 10 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 5 , Figure 9 , Figure 10 and Figure 11 As shown, when the infrared temperature sensor 20 of the fume purification equipment is in the second installation state and is located above the infrared temperature sensor 20 of the fume purification equipment in the first installation state, g > 0; the maximum height offset g satisfies: in: a is the reference distance between the center point of the burner 31 and the wall where the fume purification equipment is installed; b is the reference distance between the infrared temperature sensor 20 and the wall where the fume purification equipment is installed; c is the reference distance between the infrared temperature sensor 20 and the countertop of the cooktop 30; e is the distance between the centers of the two burners 31; and k0 is the radius of the field of view detection area of ​​the infrared temperature sensor 20 when the fume purification equipment is in the first installation state.

[0089] Figure 10 The circles shown represent the meaning of...Figure 4 Similarly, exemplarily, in Figure 10 In the comparison, the field of view detection area of ​​the infrared temperature sensor 20 with center point O is compared with the field of view detection area of ​​the infrared temperature sensor 20 with center point O1. Taking the infrared temperature sensor 20 as an example... Figure 9 Taking the infrared temperature sensor 20 on the left as an example, as the actual installation height of the fume purification equipment increases, the field of view detection area of ​​the infrared temperature sensor 20 increases, and it moves in the negative direction of the first direction X and in the positive direction of the second direction Y. The maximum height deviation of the fume purification equipment relative to the reference installation height 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 head 31 area of ​​the stove 30.

[0090] Figure 9 The diagram shown can be understood as a structural schematic of the fume purification equipment in its first installation state. The infrared temperature sensor 20 can be point A, the vertical projection point of the infrared temperature sensor 20 onto the countertop of the cooktop 30 can be point B, and the reference distance c between the infrared temperature sensor 20 and the countertop of the cooktop 30 can be a line segment, specifically line segment AB. Line segment AB can also be understood as the reference installation height of the fume purification equipment.

[0091] Infrared temperature sensor 20 can be point A. The vertical projection point of infrared temperature sensor 20 onto the cooktop 30 can be point B. A perpendicular line is drawn from point B to the wall where the fume purification device is installed. The intersection of this perpendicular line and the wall where the fume purification device is installed is point D. That is, line segment BD is perpendicular to the wall where the fume purification device is installed. The center point of burner head 31 can be point O. A perpendicular line is drawn from point O to line segment BD, with point C being the intersection point. Line segment OC is perpendicular to line segment BD (or, line segment OC is perpendicular to line segments BC and CD). The reference distance b between infrared temperature sensor 20 and the wall where the fume purification device is installed can be line segment BD. The reference distance a between the center point of burner head 31 and the wall where the fume purification device is installed can be line segment CD. The distance e between the centers of the two burners 31 can be twice the distance OC between the two burners 31. The distance OC between the two burners 31 is also the reference offset z of the infrared temperature sensor 20 along the first direction X relative to the center of the corresponding burner 31. The distance OC between the two burners 31 is equal to half the distance e between the centers of the two burners 31.

[0092] Infrared temperature sensor 20 can be point A, and the center point of burner head 31 can be point O. When the fume purification equipment is in its first installation state, the length d of the line connecting infrared temperature sensor 20 and the center of the corresponding burner head 31 can be line segment AO, from which we can obtain... and then,

[0093] 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 equipment is in the first installation state. The infrared temperature sensor 20 can be point A. 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 equipment is in the second installation state can be point O1. The position point corresponding to the installation height of the infrared temperature sensor 20 when the fume purification equipment 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 equipment is installed can be line segment OD. The reference distance b between the infrared temperature sensor 20 and the wall where the fume purification equipment 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 distance e between the centers of the two burners 31 can be twice the line segment BC. The maximum height offset g can be line segment AP. For example, at this time, the value of the maximum height offset g is greater than 0.

[0094] 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 11 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 d 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 e / 2. Line segment OC = line segment CD - line segment OD = ba. Therefore, 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,

[0095] Specifically, the infrared temperature sensor 20 of the fume purification equipment in the second installation state is located above the infrared temperature sensor 20 of the fume purification equipment in the first installation state. That is, the height of the infrared temperature sensor 20 in the second installation state is higher than the height of the infrared temperature sensor 20 in the first installation state. In simpler terms, as the installation height of the fume purification equipment increases, the center point of the detection area of ​​the corresponding infrared temperature sensor 20 changes from point O towards point O1. At this time, the maximum height offset g > 0, indicating that the actual installation height of the fume purification equipment is greater than the reference installation height.

[0096] Figure 10 The positional offset shown clearly indicates that j / 2 = k1 + L, and... but At this point, the maximum height offset g > 0.

[0097] Among them, 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 stove 30, and the distance 'e' between the centers of the two burners 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 its 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 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 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.

[0098] Based on this, continue to refer to Figure 9 , Figure 10 and Figure 11 This fume purification device is a top-mounted range hood. If the user frequently uses woks, steamers, and frying pans, the diameter j of area 31 on the burner can be calculated based on the diameter of the frying pan (24cm). In this case, both the wok and steamer will meet the maximum height offset g range during use. The maximum height offset g can be calculated based on j = 24cm, i.e., g = f -1(24). Thus, during the installation of the fume purification equipment, the difference between the actual installation height of the fume purification equipment and the reference installation height should be less than the value of the maximum height offset g.

[0099] If a user uses a frying pan relatively infrequently and frequently uses a wok and steamer, the frying pan can be omitted. In this case, the diameter j of area 31 on the stove can be calculated based on the diameter of the steamer (26cm). In this scenario, the wok will always meet the maximum height offset g range during use. The maximum height offset g can be calculated based on j = 26cm, i.e., g = f. -1 (26). Thus, during the installation of the fume purification equipment, the difference between the actual installation height of the fume purification equipment and the reference installation height should be less than the value of the maximum height offset g.

[0100] If a user uses frying pans and steamers infrequently and woks frequently, then the frying pan and steamer can be omitted. In this case, the diameter j of area 31 on the stove can be calculated based on the wok's diameter of 30cm. The maximum height offset g can be deduced from j = 30cm, i.e., g = f. -1 (30). Thus, during the installation of the fume purification equipment, the difference between the actual installation height of the fume purification equipment and the reference installation height should be less than the value of the maximum height offset g.

[0101] Optionally, Figure 12 This is a schematic diagram showing the position of the field of view detection area of ​​another infrared temperature sensor provided in this embodiment of the invention relative to the burner area of ​​the stove. Figure 13 yes Figure 12 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 5 , Figure 9 , Figure 12 and Figure 13 As shown, when the infrared temperature sensor 20 of the fume purification equipment in the second installation state is located below the infrared temperature sensor 20 of the fume purification equipment in the first installation state, g < 0; the maximum height offset g satisfies: g = f -1 (j); where: a is the reference distance between the center point of the burner 31 and the wall where the fume purification equipment is installed; b is the reference distance between the infrared temperature sensor 20 and the wall where the fume purification equipment is installed; c is the reference distance between the infrared temperature sensor 20 and the countertop of the cooktop 30; e is the distance between the centers of the two burners 31; and k0 is the radius of the field of view detection area of ​​the infrared temperature sensor 20 when the fume purification equipment is in the first installation state.

[0102] Figure 10 and Figure 12This can be understood as two different offset scenarios for the fume purification equipment: upward and downward offset in the installation height direction. Figure 12 The circles shown have the same meaning as in Figure 3. For example, in Figure 12 In the comparison, the field of view detection area of ​​the infrared temperature sensor 20 with center point O is compared with the field of view detection area of ​​the infrared temperature sensor 20 with center point O1. Taking the infrared temperature sensor 20 as an example... Figure 9 Taking the infrared temperature sensor 20 on the left as an example, as the actual installation height of the fume purification equipment decreases, the field of view detection area of ​​the infrared temperature sensor 20 decreases, and it moves towards the positive direction of the first direction X and the negative direction of the second direction Y. The maximum height deviation of the fume purification equipment relative to the reference installation height 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 head 31 area of ​​the stove 30.

[0103] Figure 9 The diagram shown can be understood as a structural schematic of the oil fume purification equipment in its first installation state. Figure 9 From this, we can obtain and then, Please refer to the above embodiments for the same content; this embodiment will not be repeated here.

[0104] 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 equipment is in the first installation state. The infrared temperature sensor 20 can be point A. The vertical projection point of the infrared temperature sensor 20 on the countertop of the cooktop 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 equipment is in the second installation state can be point O1. The position point corresponding to the installation height of the infrared temperature sensor 20 when the fume purification equipment 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 equipment is installed can be line segment OD. The reference distance b between the infrared temperature sensor 20 and the wall where the fume purification equipment is installed can be line segment CD. The reference distance c between the infrared temperature sensor 20 and the countertop of the cooktop 30 can be line segment AB. The distance e between the centers of the two burners 31 can be twice the line segment BC. The maximum height offset g can be line segment AP. For example, at this time, the value of the maximum height offset g is less than 0, then m = -g, where m can be understood as the opposite of the maximum height offset g. The value of m is greater than 0, which is convenient for subsequent calculations.

[0105] 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 11 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 length c, line segment PB is length cm, and line segment AO is the length d 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, Replacing -m with g yields the following result: Similarly, line segment AB / line segment PB = line segment OB / line segment O1B. Where line segment AB is c, line segment PB is cm, line segment OB forms right triangles with line segments BC and OC respectively, and line segment BC is e / 2. Line segment OC = line segment CD - line segment OD = ba. Therefore, 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, Replacing -m with g yields the following result:

[0106] Specifically, the infrared temperature sensor 20 of the fume purification equipment in the second installation state is located below the infrared temperature sensor 20 of the fume purification equipment in the first installation state. That is, the height of the infrared temperature sensor 20 in the second installation state is lower than the height of the infrared temperature sensor 20 in the first installation state. In simpler terms, as the installation height of the fume purification equipment decreases, the center point of the detection area of ​​the corresponding infrared temperature sensor 20 changes from point O towards point O1. At this time, the maximum height offset g < 0, indicating that the actual installation height of the fume purification equipment is less than the reference installation height.

[0107] Figure 12 The positional offset shown clearly indicates that j / 2 = k1 + L, and k1 = d1 × tanα. but At this point, the maximum height offset g < 0. Among these, the reference distances a between the center point of the burner head 31 and the wall where the fume purification equipment is installed, b between the infrared temperature sensor 20 and the wall where the fume purification equipment is installed, c between the infrared temperature sensor 20 and the countertop of the stove 30, and e between the centers of the two burners 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 its 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.

[0108] Based on this, continue to refer to Figure 9 , Figure 12 and Figure 13 This fume purification device is a top-mounted range hood. If the user frequently uses woks, steamers, and frying pans, the diameter j of area 31 on the burner can be calculated based on the diameter of the frying pan (24cm). In this case, both the wok and steamer will meet the maximum height offset g range during use. The maximum height offset g can be calculated based on j = 24cm, i.e., g = f -1 (24), or m = f -1 (24). Thus, during the installation of the fume purification equipment, the difference between the actual installation height of the fume purification equipment and the reference installation height should be less than the value of the maximum height offset g.

[0109] If a user uses a frying pan relatively infrequently and frequently uses a wok and steamer, the frying pan can be omitted. In this case, the diameter j of area 31 on the stove can be calculated based on the diameter of the steamer (26cm). In this scenario, the wok will always meet the maximum height offset g range during use. The maximum height offset g can be calculated based on j = 26cm, i.e., g = f. -1 (26), or m = f -1 (26). Thus, during the installation of the fume purification equipment, the difference between the actual installation height of the fume purification equipment and the reference installation height should be less than the value of the maximum height offset g.

[0110] If a user uses frying pans and steamers infrequently and woks frequently, then the frying pan and steamer can be omitted. In this case, the diameter j of area 31 on the stove can be calculated based on the wok's diameter of 30cm. The maximum height offset g can be deduced from j = 30cm, i.e., g = f. -1 (30), or m = f -1 (30). Thus, during the installation of the fume purification equipment, the difference between the actual installation height of the fume purification equipment and the reference installation height should be less than the value of the maximum height offset g.

[0111] Optionally, Figure 14 This is a structural schematic diagram of another oil fume purification device and stove provided in an embodiment of the present invention, as shown below. Figure 14 As shown, 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.

[0112] Specifically, Figure 14 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, both located directly above the center of the stove 30 and slightly inward. 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.

[0113] Optionally, Figure 15 This is a schematic diagram showing the position of the field of view detection area of ​​another infrared temperature sensor provided in this embodiment of the invention relative to the burner area of ​​the stove. Figure 16 yes Figure 15 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 5 , Figure 14 , Figure 15 and Figure 16 As shown, when the infrared temperature sensor 20 of the fume purification equipment is in the second installation state and is located above the infrared temperature sensor 20 of the fume purification equipment in the first installation state, g > 0; the maximum height offset g satisfies: g = f -1 (j); where: a is the reference distance between the center point of the burner 31 and the wall where the fume purification equipment is installed; b is the reference distance between the infrared temperature sensor 20 and the wall where the fume purification equipment is installed; c is the reference distance between the infrared temperature sensor 20 and the countertop of the cooktop 30; e is the distance between the centers of the two burners 31; and k0 is the radius of the field of view detection area of ​​the infrared temperature sensor 20 when the fume purification equipment is in the first installation state.

[0114] Figure 15 The circles shown represent the meaning of... Figure 4 Similarly, exemplarily, in Figure 15 In the comparison, the field of view detection area of ​​the infrared temperature sensor 20 with center point O is compared with the field of view detection area of ​​the infrared temperature sensor 20 with center point O1. Taking the infrared temperature sensor 20 as an example... Figure 14 Taking the infrared temperature sensor 20 on the left as an example, as the actual installation height of the fume purification equipment increases, the field of view detection area of ​​the infrared temperature sensor 20 increases, and it moves in the negative direction of the first direction X and the negative direction of the second direction Y. The maximum height deviation of the fume purification equipment relative to the reference installation height 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 head 31 area of ​​the stove 30.

[0115] Figure 14 The diagram shown can be understood as a structural schematic of the fume purification equipment in its first installation state. The infrared temperature sensor 20 can be point A, the vertical projection point of the infrared temperature sensor 20 onto the countertop of the cooktop 30 can be point B, and the reference distance c between the infrared temperature sensor 20 and the countertop of the cooktop 30 can be line segment AB. Line segment AB can also be understood as the reference installation height of the fume purification equipment.

[0116] Infrared temperature sensor 20 can be point A. The vertical projection point of infrared temperature sensor 20 onto the cooktop 30 can be point B. A perpendicular line is drawn from point B to the wall where the fume purification device is installed. The intersection of this perpendicular line and the wall where the fume purification device is installed is point D. That is, line segment BD is perpendicular to the wall where the fume purification device is installed. The center point of burner head 31 can be point O. A perpendicular line is drawn from point O to the extension of line segment BD, with point C being the intersection point. Line segment OC is perpendicular to line segment BD (or, line segment OC is perpendicular to line segments BC and CD). The reference distance b between infrared temperature sensor 20 and the wall where the fume purification device is installed can be line segment BD. The reference distance a between the center point of burner head 31 and the wall where the fume purification device is installed can be line segment CD. The distance e between the centers of the two burners 31 can be a line segment OC, and the line segment OC is also the reference offset z of the infrared temperature sensor 20 along the first direction X relative to the center of the corresponding burner 31. The line segment OC is equal to half of the center distance e between the two burners 31.

[0117] 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... and then,

[0118] 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 equipment is in the first installation state. The infrared temperature sensor 20 can be point A. The vertical projection point of the infrared temperature sensor 20 on the countertop of the cooktop 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 equipment is in the second installation state can be point O1. The position point corresponding to the installation height of the infrared temperature sensor 20 when the fume purification equipment 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 equipment is installed can be line segment CD. The reference distance 'b' between the infrared temperature sensor 20 and the wall where the fume purification equipment is installed can be line segment BD. The reference distance 'c' between the infrared temperature sensor 20 and the countertop of the cooktop 30 can be line segment AB. The distance 'e' between the centers of the two burners 31 can be twice the line segment OC. The maximum height offset 'g' can be line segment AP. For example, at this time, the value of the maximum height offset 'g' is greater than 0.

[0119] 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 16It 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 d 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, and line segment OB forms right triangles with line segments BC and OC respectively. Line segment BC is line segment CD - line segment BD = ab, and line segment OC = e / 2. Therefore, 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,

[0120] Specifically, the infrared temperature sensor 20 of the fume purification equipment in the second installation state is located above the infrared temperature sensor 20 of the fume purification equipment in the first installation state. That is, the height of the infrared temperature sensor 20 in the second installation state is higher than the height of the infrared temperature sensor 20 in the first installation state. In simpler terms, as the installation height of the fume purification equipment increases, the center point of the detection area of ​​the corresponding infrared temperature sensor 20 changes from point O towards point O1. At this time, the maximum height offset g > 0, indicating that the actual installation height of the fume purification equipment is greater than the reference installation height.

[0121] Figure 14 The positional offset shown clearly indicates that j / 2 = k1 + L, and k1 = d1 × tanα. but That is, At this point, the maximum height offset g > 0.

[0122] Among them, 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 stove 30, and the distance 'e' between the centers of the two burners 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 its 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 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 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.

[0123] Based on this, continue to refer to Figure 14 , Figure 15 and Figure 16 This fume purification device is a side-suction range hood. If the user frequently uses woks, steamers, and frying pans, the diameter j of area 31 on the burner can be calculated based on the diameter of the frying pan (24cm). In this case, both the wok and steamer will meet the maximum height offset g range during use. The maximum height offset g can be calculated based on j = 24cm, i.e., g = f -1 (24). Thus, during the installation of the fume purification equipment, the difference between the actual installation height of the fume purification equipment and the reference installation height should be less than the value of the maximum height offset g.

[0124] If a user uses a frying pan relatively infrequently and frequently uses a wok and steamer, the frying pan can be omitted. In this case, the diameter j of area 31 on the stove can be calculated based on the diameter of the steamer (26cm). In this scenario, the wok will always meet the maximum height offset g range during use. The maximum height offset g can be calculated based on j = 26cm, i.e., g = f. -1 (26). Thus, during the installation of the fume purification equipment, the difference between the actual installation height of the fume purification equipment and the reference installation height should be less than the value of the maximum height offset g.

[0125] If a user uses frying pans and steamers infrequently and woks frequently, then the frying pan and steamer can be omitted. In this case, the diameter j of area 31 on the stove can be calculated based on the wok's diameter of 30cm. The maximum height offset g can be deduced from j = 30cm, i.e., g = f. -1(30). Thus, during the installation of the fume purification equipment, the difference between the actual installation height of the fume purification equipment and the reference installation height should be less than the value of the maximum height offset g.

[0126] Optionally, Figure 17 This is a schematic diagram showing the position of the field of view detection area of ​​another infrared temperature sensor provided in this embodiment of the invention relative to the burner area of ​​the stove. Figure 18 yes Figure 17 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 5 , Figure 14 , Figure 17 and Figure 18 As shown, when the infrared temperature sensor 20 of the fume purification equipment in the second installation state is located below the infrared temperature sensor 20 of the fume purification equipment in the first installation state, g < 0; the maximum height offset g satisfies: g = f -1 (j); where: a is the reference distance between the center point of the burner 31 and the wall where the fume purification equipment is installed; b is the reference distance between the infrared temperature sensor 20 and the wall where the fume purification equipment is installed; c is the reference distance between the infrared temperature sensor 20 and the countertop of the cooktop 30; e is the distance between the centers of the two burners 31; and k0 is the radius of the field of view detection area of ​​the infrared temperature sensor 20 when the fume purification equipment is in the first installation state.

[0127] Figure 15 and Figure 17 This can be understood as two different offset scenarios for the fume purification equipment: upward and downward offset in the installation height direction. Figure 17 The circles shown represent the meaning of... Figure 4 Similarly, exemplarily, in Figure 17 In the comparison, the field of view detection area of ​​the infrared temperature sensor 20 with center point O is compared with the field of view detection area of ​​the infrared temperature sensor 20 with center point O1. Taking the infrared temperature sensor 20 as an example... Figure 14 Taking the infrared temperature sensor 20 on the left as an example, as the actual installation height of the fume purification equipment decreases, the field of view detection area of ​​the infrared temperature sensor 20 decreases, and it moves in the positive direction of the first direction X and in the positive direction of the second direction Y. The maximum height deviation of the fume purification equipment relative to the reference installation height 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 head 31 area of ​​the stove 30.

[0128] Figure 14 The diagram shown can be understood as a structural schematic of the oil fume purification equipment in its first installation state. Figure 14 From this, we can obtain and then, Please refer to the above embodiments for the same content; this embodiment will not be repeated here.

[0129] 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 equipment is in the first installation state. The infrared temperature sensor 20 can be point A. The vertical projection point of the infrared temperature sensor 20 on the countertop of the cooktop 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 equipment is in the second installation state can be point O1. The position point corresponding to the installation height of the infrared temperature sensor 20 when the fume purification equipment 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 equipment is installed can be line segment CD. The reference distance 'b' between the infrared temperature sensor 20 and the wall where the fume purification equipment is installed can be line segment BD. The reference distance 'c' between the infrared temperature sensor 20 and the countertop of the cooktop 30 can be line segment AB. The distance 'e' between the centers of the two burners 31 can be twice the line segment OC. The maximum height offset 'g' can be line segment AP. For example, at this time, the value of the maximum height offset g is less than 0, then m = -g, where m can be understood as the opposite of the maximum height offset g. The value of m is greater than 0, which is convenient for subsequent calculations.

[0130] 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 18 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 length c, line segment PB is length cm, and line segment AO is the length d 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, Replacing -m with g yields the following result: Similarly, line segment AB / line segment PB = line segment OB / line segment O1B. Where line segment AB is c, line segment PB is cm, and line segment OB forms right triangles with line segments BC and OC respectively. Line segment BC is the sum of line segment CD - line segment BD = ab, and line segment OC = e / 2. Therefore, 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, Replacing -m with g yields the following result:

[0131] Specifically, the infrared temperature sensor 20 of the fume purification equipment in the second installation state is located below the infrared temperature sensor 20 of the fume purification equipment in the first installation state. That is, the height of the infrared temperature sensor 20 in the second installation state is lower than the height of the infrared temperature sensor 20 in the first installation state. In simpler terms, as the installation height of the fume purification equipment decreases, the center point of the detection area of ​​the corresponding infrared temperature sensor 20 changes from point O towards point O1. At this time, the maximum height offset g < 0, indicating that the actual installation height of the fume purification equipment is less than the reference installation height.

[0132] Figure 17 The positional offset shown clearly indicates that j / 2 = k1 + L, and k1 = d1 × tanα, d1 = but That is, At this point, the maximum height offset g < 0.

[0133] Among them, 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 stove 30, and the distance 'e' between the centers of the two burners 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 its 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 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 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.

[0134] Based on this, continue to refer to Figure 14 , Figure 17 and Figure 18 This fume purification device is a side-suction range hood. If the user frequently uses woks, steamers, and frying pans, the diameter j of area 31 on the burner can be calculated based on the diameter of the frying pan (24cm). In this case, both the wok and steamer will meet the maximum height offset g range during use. The maximum height offset g can be calculated based on j = 24cm, i.e., g = f -1 (24), or m = f -1 (24). Thus, during the installation of the fume purification equipment, the difference between the actual installation height of the fume purification equipment and the reference installation height should be less than the value of the maximum height offset g.

[0135] If a user uses a frying pan relatively infrequently and frequently uses a wok and steamer, the frying pan can be omitted. In this case, the diameter j of area 31 on the stove can be calculated based on the diameter of the steamer (26cm). In this scenario, the wok will always meet the maximum height offset g range during use. The maximum height offset g can be calculated based on j = 26cm, i.e., g = f. -1 (26), or m = f -1 (26). Thus, during the installation of the fume purification equipment, the difference between the actual installation height of the fume purification equipment and the reference installation height should be less than the value of the maximum height offset g.

[0136] If a user uses frying pans and steamers infrequently and woks frequently, then the frying pan and steamer can be omitted. In this case, the diameter j of area 31 on the stove can be calculated based on the wok's diameter of 30cm. The maximum height offset g can be deduced from j = 30cm, i.e., g = f. -1 (30), or m = f -1 (30). Thus, during the installation of the fume purification equipment, the difference between the actual installation height of the fume purification equipment and the reference installation height should be less than the value of the maximum height offset g.

[0137] Optionally, continue to refer to Figure 1 , Figure 9 and Figure 14 The infrared temperature sensor 20 is a thermopile type infrared temperature sensor.

[0138] Specifically, a thermopile-type infrared temperature sensor can receive the infrared radiation energy emitted by an object, convert it into a voltage signal, and then the internal MCU processes and calibrates the signal through algorithms to finally convert the voltage signal into the object's temperature value. The thermopile-type infrared temperature sensor consists of a heat-absorbing region (hot end), a silicon substrate (cold end), a thin film, and an outer package. The working principle of the thermopile-type infrared temperature sensor is similar to that of a conventional thermocouple, based on the Seebeck effect (thermal potential effect). Multiple thermocouple junctions are deposited on the silicon substrate, and these junctions are connected in series to form a thermal sensing channel. A very thin film, formed by etching, provides thermal isolation between the hot and cold ends. The infrared absorption region is combined with the hot end to raise its temperature, thus creating a thermoelectric potential, which ultimately outputs a voltage signal.

[0139] The specific embodiments described above do not constitute a limitation on the scope of protection of this invention. Those skilled in the art should understand that various modifications, combinations, sub-combinations, and substitutions can be made according to design requirements and other factors. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this invention should be included within the scope of protection of this invention.

Claims

1. A method for installing an oil fume purification device, characterized in that, The fume purification device includes a fume hood and an infrared temperature sensor; the fume hood is installed above the stove; the infrared temperature sensor is installed on the side of the fume hood facing the burner of the stove and is positioned towards the burner, and 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 method includes: The installation height of the fume purification equipment on the mounting wall is determined according to the first installation specification, so as to install the fume purification equipment on the mounting wall; the installation height is based on the height of the infrared temperature sensor relative to the stove. At the specified installation height, the field of view detection area is located within the range of the furnace head area; The first 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. Under the first installation specification, the absolute value of the difference between the installation height and the reference installation height does not exceed the maximum height offset.

2. The installation method according to claim 1, characterized in that, The diameter j of the furnace head area satisfies: 24cm≤j≤30cm.

3. The installation method according to claim 1, characterized in that, The maximum height offset g is determined based on the following parameters: The radius k1 of the field of view detection area of ​​the infrared temperature sensor when the fume purification equipment is in the second installation state; The offset L of the center of the field of view detection area of ​​the infrared temperature sensor when the fume purification device is in the second installation state, relative to the center of the field of view detection area of ​​the infrared temperature sensor when the fume purification device is in the first installation state; and, The diameter j of the furnace head area; The first installation state is when the fume purification device is installed on the mounting wall at the reference installation height, and the second installation state is when the fume purification device is installed on the mounting wall at an installation height with the maximum height offset g relative to the reference installation height.

4. The installation method according to claim 3, characterized in that, The radius k1 of the field of view detection area of ​​the infrared temperature sensor when the fume purification equipment is in the second installation state is determined based on the following parameters: The field of view of the infrared temperature sensor is 2α; The length d1 of the line connecting the infrared temperature sensor and the center of the corresponding burner head when the fume purification equipment is in the second installation state.

5. The installation method according to claim 4, characterized in that, When the fume purification equipment is in the first installation state, the center point of the field of view of the infrared temperature sensor is aligned with the center point of the burner head; The field of view angle 2α corresponding to the field of view detection area 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; The first direction is parallel to the line connecting the centers of the two burners on the stove.

6. The installation method according to claim 4, characterized in that, The length d1 of the line connecting the infrared temperature sensor and the center of the corresponding burner head when the fume purification equipment is in the second installation state 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 maximum height offset g; The first direction is parallel to the line connecting the centers of the two burners on the stove.

7. The installation method according to claim 3, characterized in that, The offset L of the center of the infrared temperature sensor's field of view detection area when the fume purification device is in the second installation state, relative to the center of the infrared temperature sensor's field of view detection area when the fume purification device is in the first installation state, 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 maximum height offset g; The first direction is parallel to the line connecting the centers of the two burners on the stove.

8. The installation method according to claim 3, characterized in that, When the infrared temperature sensor of the fume purification device in the second installation state is located above the infrared temperature sensor of the fume purification device in the first installation state, g > 0; When the infrared temperature sensor of the fume purification device in the second installation state is located below the infrared temperature sensor of the fume purification device in the first installation state, g < 0; The maximum height offset g satisfies: g = f -1 (j); where: a is the reference distance between the center point of the burner head and the wall where the fume purification equipment is installed; b is the reference distance between the infrared temperature sensor and the wall where the fume purification equipment is installed; c is the reference distance between the infrared temperature sensor and the countertop of the stove; z is the reference offset of the infrared temperature sensor along the first direction relative to the center of the corresponding furnace head; and, k0 is the radius of the field of view detection area of ​​the infrared temperature sensor when the fume purification equipment is in the first installation state; The first direction is parallel to the line connecting the centers of the two burners on the stove.

9. The installation method according to claim 3, 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.

10. The installation method according to claim 9, characterized in that, When the infrared temperature sensor of the fume purification device in the second installation state is located above the infrared temperature sensor of the fume purification device in the first installation state, g > 0; When the infrared temperature sensor of the fume purification device in the second installation state is located below the infrared temperature sensor of the fume purification device in the first installation state, g < 0; The maximum height offset g satisfies: g=f -1 (j); where: a is the reference distance between the center point of the burner head and the wall where the fume purification equipment is installed; b is the reference distance between the infrared temperature sensor and the wall where the fume purification equipment is installed; c is the reference distance between the infrared temperature sensor and the countertop of the stove; e is the distance between the centers of the two furnace heads; and, k0 is the radius of the field of view detection area of ​​the infrared temperature sensor when the fume purification equipment is in the first installation state.

Images