Suction apparatus and control method of suction apparatus

Abstract

The invention relates to the technical field of kitchen appliances, in particular to air suction equipment and a control method of the air suction equipment. The inhalation equipment is used for inhaling indoor aerosol and comprises an equipment body, a detection assembly and a first flow divider valve. An air inlet channel, an air outlet channel and an air return channel are formed in the equipment body, one end of the air inlet channel is an indoor side air suction opening, one end of the air outlet channel is used for communicating with the outside, the other end of the air outlet channel is connected with the other end, away from the indoor side, of the air inlet channel, and one end of the air return channel is connected with the other end, away from the indoor side, of the air inlet channel. The other end of the air return channel communicates with the interior. The detection assembly is arranged in the air inlet channel and used for detecting aerosol in the air inlet channel. The first diverter valve is in signal connection with the detection assembly; the air inlet channel, the air outlet channel and the air return channel are connected through a first flow divider valve, and when the detection assembly detects that aerosol is qualified, the first flow divider valve communicates with the air inlet channel and the air return channel. And qualified aerosol can be discharged indoors, so that the indoor and outdoor air pressure difference is relieved.

Description

Technical Field

[0001] The present application relates to the technical field of kitchen appliances, and in particular to an air suction device and a control method for the air suction device. Background Art

[0002] Oil smoke is usually produced during the process of heating food. Oil smoke is a black substance produced by incomplete combustion of oil. It is very sticky and difficult to clean after condensation. It also contains a variety of harmful substances, such as acrolein, benzene, formaldehyde, crotonaldehyde, volatile nitrosamines, etc. Once inhaled, it will cause irreversible damage to the cook's body. Therefore, in the kitchen, a range hood is usually installed for the stove to reduce the amount of oil smoke inhaled by the cook.

[0003] Common range hoods currently inhale smoke directly from indoors and exhaust it outdoors, thus preventing smoke from being inhaled by the cook to a certain extent. However, range hoods set up in this way will continue to exhaust indoor gas to the outdoors, causing a gradual pressure difference between indoors and outdoors, resulting in serious indoor negative pressure, making the range hood more likely to have a series of problems such as backflow of smoke and excessive power consumption, affecting the normal use of the range hood. Summary of the invention

[0004] In view of this, the present application provides an air intake device and a control method for the air intake device, which can alleviate the indoor and outdoor air pressure difference caused by the range hood.

[0005] In order to solve the above technical problems, a technical solution adopted by the present application is: to provide an inhalation device for inhaling aerosols in a room, including a device body, a detection component and a first diverter valve. The device body is formed with an air inlet channel, an air outlet channel and a return air channel, one end of the air inlet channel is an air inlet on the indoor side, one end of the air outlet channel is used to connect to the outside world, the other end of the air outlet channel is connected to the other end of the air inlet channel away from the room, one end of the return air channel is connected to the other end of the air inlet channel away from the room, and the other end of the return air channel is used to connect to the room; the detection component is arranged in the air inlet channel for detecting aerosols in the air inlet channel; the first diverter valve signal connects the detection component; wherein, the air inlet channel, the air outlet channel and the return air channel are connected through the first diverter valve, and when the detection component detects that the aerosol is qualified, the first diverter valve connects the air inlet channel with the return air channel.

[0006] In a specific embodiment, the air intake device further includes a purification component, the detection component includes a first detection component, the purification component is arranged in the air inlet channel, and the purification component is closer to the indoor air intake port relative to the first detection component.

[0007] In a specific embodiment, the air intake device also includes a second diverter valve, and the device body is also formed with a connecting channel, one end of which is connected to the outside world, and the air inlet channel is provided with a diverter connection portion, and the diverter connection portion is located between the purification component and the indoor air intake port, and the other end of the connecting channel, the diverter connection portion, is connected to the second diverter valve.

[0008] In a specific embodiment, the air suction device also includes a first air pressure detection component and a controller, the controller is connected to the first air pressure detection component and the second diverter valve, the first air pressure detection component is used to detect the external air pressure and the indoor air pressure, and the controller is used to obtain the air pressure difference between the external air pressure and the indoor air pressure.

[0009] In a specific embodiment, the detection component also includes a second detection component, the second diverter valve is a three-way valve, the second diverter valve connects the air inlet channel, the connecting channel and the room, the second detection component is arranged in the air inlet channel corresponding to the second diverter valve, and is used to detect the aerosol passing into the air inlet channel, and the controller is also connected to the second detection component; wherein, when the second detection component detects that the aerosol is qualified, the second diverter valve connects the air inlet channel with the room.

[0010] In a specific embodiment, the air intake device also includes a second air pressure detection component and a suction fan, the suction fan is arranged in the air inlet channel between the diversion connection part and the indoor air intake port, the second air pressure detection component is connected to the controller, and the second air pressure detection component is used to detect the wind pressure output by the suction fan.

[0011] In a specific embodiment, the detection component includes a particle concentration sensor.

[0012] In order to solve the above-mentioned technical problems, another technical solution adopted in the present application is: to provide a control method for an air intake device, which is implemented using the air intake device as described in any of the above-mentioned specific embodiments, and the control method for the air intake device includes obtaining first detection data from a first detection element, and the first detection data includes the oil fume content of the aerosol; comparing the first detection data with qualified data; in response to the first detection data being greater than the qualified data, controlling the first diverter valve to connect the air inlet channel with the air outlet channel; or, in response to the first detection data being less than or equal to the qualified data, controlling the first diverter valve to connect the air inlet channel with the return air channel.

[0013] In a specific embodiment, the control method of the air intake device also includes obtaining air pressure difference data, comparing the air pressure difference data with a preset value, the air pressure difference data including the difference between the external air pressure and the indoor air pressure, the external air pressure and the indoor air pressure being measured by a first air pressure detection component; in response to the air pressure difference data being less than the preset value, controlling the second diverter valve to connect the connecting channel and the air inlet channel.

[0014] In a specific embodiment, the obtaining of air pressure difference data and comparing the air pressure difference data with a preset value further includes, in response to the air pressure difference data being greater than or equal to the preset value, obtaining wind pressure data from a second air pressure detection component and obtaining external air pressure data from the first air pressure detection component, wherein the wind pressure data includes the wind pressure output by a suction fan; comparing the air pressure difference data with the wind pressure data; in response to the wind pressure data being greater than the external air pressure data, controlling the second diverter valve to connect the connecting channel with the air inlet channel; or, in response to the wind pressure data being less than the external air pressure data, controlling the second diverter valve to isolate the connecting channel from the air inlet channel.

[0015] The beneficial effects of the present application include: using the first diverter valve to connect the air outlet channel, the return air channel and the air inlet channel, and using the detection component to detect the aerosol in the air inlet channel, the detection component is connected to the first diverter valve signal, and when the detection component detects that the aerosol is qualified, the first diverter valve can be used to connect the air inlet channel with the return air channel, so that the qualified aerosol is discharged back into the room, reducing the air pressure difference between indoor and outdoor, thereby reducing the probability of adverse situations such as smoke backflow. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the implementation will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0017] Figure 1 A schematic diagram of the assembly structure of the air intake device provided in this application at one angle;

[0018] Figure 2 A schematic diagram of the assembly structure of the air intake device provided in this application from another angle;

[0019] Figure 3 A schematic cross-sectional view of the air intake device provided in this application;

[0020] Figure 4 Another cross-sectional structural schematic diagram of the air intake device provided in the present application;

[0021] Figure 5 A schematic diagram of the structure and gas flow of an embodiment of the air intake device provided in this application;

[0022] Figure 6 A schematic flow chart of an embodiment of a control method for an air intake device provided in the present application;

[0023] Figure 7 This is a schematic block diagram of the process of another embodiment of the control method of the air intake device provided in the present application.

[0024] Description of reference numerals:

[0025] 1. Equipment body; 2. Air inlet channel; 21. Indoor air intake port; 22. Diversion connection part; 3. Air outlet channel; 4. Return air channel; 51. First detection part; 52. Second detection part; 61. First diversion valve; 62. Second diversion valve; 81. First air pressure detection part; 82. Second air pressure detection part; 9. Intake fan; 11. Purification component; 12. Connection channel; 100. Outside; 101. Wall. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0027] The terms "first", "second", etc. in the specification and claims of this application and the above-mentioned drawings are used to distinguish different objects, rather than to describe a specific order. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions. For example, a process, method, system, product or device that includes a series of steps or units is not limited to the listed steps or units, but optionally includes steps or units that are not listed, or optionally includes other steps or units inherent to these processes, methods, products or devices.

[0028] Reference to "embodiment" or "implementation" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiment or implementation may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0029] Oil smoke is usually produced during the process of heating food. Oil smoke is a black substance produced by incomplete combustion of oil. It is very sticky and difficult to clean after condensation. It also contains a variety of harmful substances, such as acrolein, benzene, formaldehyde, crotonaldehyde, volatile nitrosamines, etc. Once inhaled, it will cause irreversible damage to the cook's body. Therefore, in the kitchen, a range hood is usually installed for the stove to reduce the amount of oil smoke inhaled by the cook.

[0030] Common range hoods currently in use usually directly draw in smoke from indoors and exhaust it outdoors, thus preventing smoke from being inhaled by the cook to a certain extent. However, range hoods set up in this way will always exhaust indoor gas to the outdoors, causing a gradual pressure difference between indoors and outdoors, resulting in serious indoor negative pressure, making range hoods more likely to have a series of problems such as backflow of smoke and excessive power consumption of the fan, which affects the normal use of the range hood.

[0031] Especially in low-pollution scenarios with low aerosol oil fume content, if the oil fume content of the indoor aerosol itself meets the standard, it will not cause obvious impact on the human body and the environment. However, because the indoor aerosol is continuously discharged to the public flue outside, the indoor and outdoor air pressure difference is too large, so that the aerosol with high oil fume content in the public flue is poured into the room through the range hood, resulting in the adverse situation of smoke backflow, which in turn aggravates the pollution of the indoor environment and is not conducive to the health of users and the hygiene of the indoor environment.

[0032] In order to improve or solve the above technical problems, the inventors of the present application have proposed at least the following embodiments after long-term research.

[0033] See also Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 1 This is a schematic diagram of the assembly structure at one angle of the air intake device provided in this application. Figure 2 This is a schematic diagram of the assembly structure of the air intake device provided in this application from another angle. Figure 3 This is a schematic cross-sectional structural diagram of the air intake device provided in this application. Figure 4 Another cross-sectional structural schematic diagram of the air intake device provided in this application. Figure 5 The present invention provides a schematic diagram of the structure and gas flow of an embodiment of an inhalation device provided by the present invention. To solve the above technical problems, the present invention provides an inhalation device, which can be used to inhale aerosols in a room and then selectively discharge them to the outside 100 and / or discharge them back into the room, for example Figure 5 In the figure, the wall 101 is used as a reference to separate the outside world 100 from the indoors. The left side of the wall 101 can be regarded as the outside world 100, and the right side of the wall can be regarded as the indoors.

[0034] The air suction device may specifically include a device body 1, a detection component, and a first diverter valve 61. An air inlet channel 2, an air outlet channel 3, and a return air channel 4 may be formed in the device body 1, one end of the air inlet channel 2 is an indoor air inlet 21, one end of the air outlet channel 3 is used to connect to the outside 100, the other end of the air outlet channel 3 is connected to the other end of the air inlet channel 2 away from the room, one end of the return air channel 4 is connected to the other end of the air inlet channel 2 away from the room, and the other end of the return air channel 4 is used to connect to the room.

[0035] The detection component is arranged in the air inlet channel 2, and is used to detect the aerosol in the air inlet channel 2. The first diverter valve 61 is connected to the detection component by signal. The air inlet channel 2, the air outlet channel 3, and the return air channel 4 can be connected through the first diverter valve 61. When the detection component detects that the aerosol is qualified, the first diverter valve 61 can connect the air inlet channel 2 and the return air channel 4.

[0036] Among them, qualified aerosol means that after testing, it is found that the content of oil fume particles in the aerosol is lower than a specified value or order of magnitude. Even if such aerosol is inhaled by the user for a long time, the oil fume particles in it will not accumulate in the human body to a level that can cause harm. Therefore, such aerosol can be judged as low-risk or non-risk to the human body.

[0037] Through the structure provided by this embodiment, the first diverter valve 61 can be used to connect the air outlet channel 3, the return air channel 4 and the air inlet channel 2, and the detection component can be used to detect the aerosol in the air inlet channel 2, wherein the detection component is connected to the first diverter valve 61 signal. Therefore, when the detection component detects that the aerosol is qualified, the first diverter valve 61 can be used to connect the air inlet channel 2 with the return air channel 4, and the qualified aerosol can be discharged back into the room, reducing the pressure difference between indoors and outdoors, thereby reducing the probability of adverse conditions such as backflow, and improving the stability of the air inhalation device. Through the cooperation of the detection component and the first diverter valve 61, the exhaust pressure of the air inhalation device can be relieved, and it can flexibly adapt to the use requirements of low-pollution scenes where the aerosol oil fume content meets the standards, significantly improving the availability of the air inhalation device.

[0038] Furthermore, when the detection component detects that the aerosol is unqualified, the first diverter valve 61 can connect the air inlet channel 2 with the air outlet channel 3, so that the unqualified aerosol can be discharged to the outside 100 through the air outlet channel 3, thereby realizing the function of the air suction device to remove indoor oil smoke, reducing the pollution caused by oil smoke to the indoor room, and enabling the air suction device to flexibly adapt to different usage scenarios and usage requirements, thereby further improving the usability of the air suction device.

[0039] In a specific embodiment, the air inhalation device may further include a purification component 11, and the detection component may include a first detection member 51. The purification component 11 is disposed in the air inlet channel 2, and the purification component 11 is closer to the indoor air inlet 21 than the first detection member 51.

[0040] In the air inlet channel 2, due to the tendency of the air suction device to exhaust, the aerosol tends to flow from the indoor air suction port to the air outlet channel 3 and the return air channel 4. In this embodiment, the purification component 11 is arranged closer to the indoor side air suction port 21, so that the first detection element 51 can be used to detect the aerosol processed by the purification component 11.

[0041] The purification component 11 can purify the aerosol that enters the air inlet channel 2 through the indoor side air intake port 21, and utilize the purification component 11 to remove at least part of the oil smoke in the aerosol, so that the aerosol passing through the purification component 11 can better meet the qualified standards, thereby better alleviating the indoor and outdoor air pressure difference, further reducing the probability of adverse situations such as backflow of smoke, and improving the stability and availability of the air intake equipment.

[0042] In a specific embodiment, the air intake device may further include a second diverter valve 62, and the device body 1 is also formed with a connecting channel 12, one end of the connecting channel 12 is connected to the outside world 100, and the air inlet channel 2 is provided with a diverter connection part 22, and the diverter connection part 22 is located between the purification component 11 and the indoor air intake port 21, and the other end of the connecting channel 12 and the diverter connection part 22 are both connected to the second diverter valve 62.

[0043] Optionally, in Figures 1 to 5 In the embodiment shown, since the connecting channel 12 and the end of the air outlet channel 3 away from the air inlet channel 2 both need to be connected to the outside world 100, the ends of the two can be unified when designing the air inhalation device, and then the aerosol is discharged to the outside world 100 through an opening, which is beneficial to the management and installation of the air inhalation device.

[0044] In the structure provided in the present embodiment, the connecting channel 12 is connected to the air inlet channel 2 by the second diverter valve 62 connected to the diverter connection part 22, and when the aerosol flow direction in the air inlet channel 2 is normal, the second diverter valve 62 is "closer to the front" in the air inlet channel 2 than the first diverter valve 61, the detection component, the purification component 11 and other structures, so that in the use scenario where it is necessary to exhaust to the outside world 100 as soon as possible, the aerosol does not need to go through the subsequent purification and detection process, and the second diverter valve 62 is directly used to connect the connecting channel 12 and the diverter connection part 22 to discharge the aerosol to the outside world 100, thereby improving the working efficiency of the air inhalation device. While the detection component, the purification component 11 and the first diverter valve 61 are set to meet the need to alleviate the indoor and outdoor air pressure difference, the connecting channel 12, the second diverter valve 62 and the diverter connection part 22 can meet the need for rapid exhaust, so that the air inhalation device can adapt to the use needs of different use scenarios, and improve the versatility and usability of the air inhalation device.

[0045] In a specific embodiment, the air intake device may further include a first air pressure detection component 81 and a controller, wherein the controller is connected to the first air pressure detection component 81 and the second diverter valve 62, the first air pressure detection component 81 is used to detect the external air pressure 100 and the indoor air pressure, and the controller is used to obtain the air pressure difference between the external air pressure 100 and the indoor air pressure.

[0046] In order to measure the outside air pressure 100 and the indoor air pressure, the first air pressure detection member 81 may specifically include a first air pressure sensor and a second air pressure sensor, and the controller can be connected to the first air pressure sensor, the second air pressure sensor and the second diverter valve 62. The first air pressure sensor is used to detect the indoor air pressure, and the second air pressure sensor is used to detect the outside air pressure 100. The controller can obtain the indoor air pressure and the outside air pressure 100 measured by the first air pressure sensor and the second air pressure sensor, and obtain the air pressure difference between the outside air pressure 100 and the indoor air pressure by calculating the difference between the outside air pressure 100 and the indoor air pressure.

[0047] Through the structure provided in this embodiment, the first air pressure detection member 81 can be used to detect the air pressure of the outside world 100 and the indoor air pressure, and the air pressure difference between the air pressure of the outside world 100 and the indoor air pressure can be obtained. The controller is connected to the second diverter valve 62, so that the opening time and opening degree of the second diverter valve 62 can be determined according to the air pressure difference between the air pressure of the outside world 100 and the indoor air pressure detected. When the air pressure difference is too large, the second diverter valve 62 is kept closed, so that the outside world 100 will not be directly connected to the air inlet channel 2 through the connecting channel 12, so that the aerosol in the air inlet channel 2 has the opportunity to enter the return air channel 4 after being processed by the purification component 11 and return to the room, thereby reducing the probability of further increasing the air pressure difference. When the air pressure difference is normal, the controller can open the second diverter valve 62, so as to discharge the aerosol directly to the outside world 100, which can reduce the use of the purification component 11 when there is no need to return the aerosol to the room, and can increase the life of the purification component 11 and improve the availability of the air inhalation equipment.

[0048] Furthermore, in the case where the air pressure difference is the difference between the data measured by the first air pressure sensor and the second air pressure sensor respectively, the external air pressure data 100 measured by the second air pressure sensor can be directly used to compare with the wind pressure data output to the outside when the air intake device is working at normal or default power. When the external air pressure data 100 is less than this wind pressure data, it means that the air intake device can output positive pressure to the outside 100, and then you can choose to open the second diverter valve 62 to discharge the aerosol to the outside 100.

[0049] In a specific embodiment, the detection component may further include a second detection member 52, a second diverter valve 62 is a three-way valve, and the second diverter valve 62 is connected to the air inlet channel 2, the connecting channel 12 and the room. The second detection member 52 is arranged in the air inlet channel 2 corresponding to the second diverter valve 62, and the second detection member 52 is used to detect the aerosol entering the air inlet channel 2, and the second detection member 52 is also connected to the controller.

[0050] Among them, when the second detection component 52 detects that the aerosol is qualified, the second diverter valve 62 can connect the air inlet channel 2 with the room, so that the aerosol is directly discharged back to the room by using the second diverter valve 62, and no longer passes through the purification component 11, the first detection component 51 and the first diverter valve 61, thereby improving the efficiency of discharging the aerosol back to the room to balance the pressure difference of 100 between the room and the outside world, and improving the life of the purification component 11, thereby achieving the effect of improving the availability of the air inhalation equipment.

[0051] In a specific embodiment, the air intake device also includes a second air pressure detection component 82 and a suction fan 9. The suction fan 9 is arranged in the air inlet channel 2 between the diversion connection part 22 and the indoor air intake port 21. The second air pressure detection component 82 is connected to the controller, and the second air pressure detection component 82 is used to detect the wind pressure output by the suction fan 9.

[0052] Among them, the second air pressure detection component 82 may include an air pressure detection sensor, which is arranged toward the output end of the suction fan 9. The airflow output by the suction fan 9 impacts the air pressure detection sensor, so that it can detect the wind pressure output by the suction fan 9, and then enable the controller to compare the wind pressure with the external air pressure 100. When the wind pressure is greater than or equal to the external air pressure 100, even if the air pressure difference between the external air pressure 100 and the indoor air pressure is too large, the demand for exhaust to the outside 100 can still be met. At this time, the controller can control the second diverter valve 62 to connect the connecting channel 12 and the air inlet channel 2, and discharge aerosols to the outside 100, thereby meeting the demand for exhausting indoor oil smoke when the air pressure difference is too large, increasing the adaptation scenarios of the air suction equipment, and improving the availability of the air suction equipment.

[0053] In a specific embodiment, the detection component may specifically include a particle concentration sensor. The particle concentration sensor uses a light beam to illuminate particles in the aerosol, determines the concentration of dust or particles by measuring the characteristics of scattered light from the particles, and can monitor the concentration of particles in the air in real time based on the laser scattering principle and / or infrared scattering principle.

[0054] Since the oil fume particles in aerosols usually exist in the form of oil droplets and particles with larger diameters, the particle concentration sensor can effectively detect these large-diameter particles, thereby measuring the oil fume content in the aerosol and determining whether the aerosol is qualified.

[0055] Specifically, for different usage scenarios and needs, the particle concentration sensor may include at least one of an infrared type sensor and a laser type sensor. The two have different light source types and can adapt to different accuracy and cost control requirements. For usage scenarios with higher accuracy requirements, a laser type sensor can be used.

[0056] Among them, the accuracy level of the particulate matter concentration sensor may include at least one of different levels such as PM10, PM2.5, PM1.0, etc.

[0057] In one embodiment of the present application, in order to solve the above technical problem, a control method of an air suction device is further provided. The control method of the air suction device is implemented using the air suction device described in any of the above specific embodiments. Figure 6 This is a schematic flow chart of an embodiment of a control method for an air inhalation device provided in the present application. It should be noted that if there are substantially the same results, this embodiment is not limited to Figure 6 The process sequence shown is limited. Figure 6 As shown, the control method of the air intake device provided in this embodiment includes:

[0058] S100: Acquire first detection data from the first detection element 51, the first detection data including the oil smoke content of the aerosol.

[0059] In this embodiment, the execution subject of the control method of the air suction device can be at least one of the server, the client, and the device end of the air suction device. Among them, the device end software for implementing the method on the device end can be stored in the controller or memory in the air suction device. In this embodiment, the controller of the air suction device is used as the execution subject of the control method of the air suction device.

[0060] The controller obtains first detection data from the first detection element 51, and the first detection data includes the oil smoke content of the aerosol. The first detection element 51 may be a particle concentration sensor.

[0061] S200: Compare the first detection data with the qualified data.

[0062] The controller compares the first detection data with the qualified data, wherein the qualified data may be stored in at least one of a cloud storage, a local storage of the suction device, and a cache of the controller, and during the comparison, the controller may obtain the qualified data from the location.

[0063] Among them, the qualified data of the oil fume content of the aerosol is a specified value or order of magnitude. When the content of oil fume particles in the aerosol is lower than the specified value or order of magnitude, even if such aerosol is inhaled by the user for a long time, the oil fume particles therein will not accumulate in the human body to a level that can cause harm. Therefore, such an aerosol can be judged as low-risk or non-risk to the human body, so that this specified value or order of magnitude can be determined as the qualified data of the oil fume content of the aerosol.

[0064] S300 : In response to the first detection data being greater than the qualified data, controlling the first diverter valve 61 to connect the air inlet channel 2 with the air outlet channel 3 .

[0065] In response to the first detection data being greater than the qualified data, the controller controls the first diverter valve 61 to connect the air inlet channel 2 with the air outlet channel 3 , and discharges unqualified aerosol to the outside 100 .

[0066] S400 : In response to the first detection data being less than or equal to the qualified data, controlling the first diverter valve 61 to connect the air inlet channel 2 with the air return channel 4 .

[0067] In response to the first detection data being less than or equal to the qualified data, the controller controls the first diverter valve 61 to connect the air inlet channel 2 with the air return channel 4, and discharges the qualified aerosol back into the room.

[0068] Through the method provided in this embodiment, the first diverter valve 61 can be used to connect the air outlet channel 3, the return air channel 4 and the air inlet channel 2, and the detection component can be used to detect the aerosol in the air inlet channel 2, wherein the detection component is connected to the first diverter valve 61 signal. Therefore, when the detection component detects that the aerosol is qualified, the first diverter valve 61 can be used to connect the air inlet channel 2 with the return air channel 4, and the qualified aerosol can be discharged back into the room, reducing the pressure difference between indoors and outdoors, thereby reducing the probability of adverse conditions such as backflow, and improving the stability of the inhalation device. Through the cooperation of the detection component and the first diverter valve 61, the exhaust pressure of the inhalation device can be relieved, and the availability of the inhalation device can be significantly improved.

[0069] Furthermore, when the detection component detects that the aerosol is unqualified, the first diverter valve 61 can connect the air inlet channel 2 with the air outlet channel 3, so that the unqualified aerosol can be discharged to the outside 100 through the air outlet channel 3, thereby realizing the function of the air suction device to remove indoor oil smoke, reducing the pollution caused by oil smoke to the indoor room, and enabling the air suction device to flexibly adapt to different usage scenarios and usage requirements, thereby further improving the usability of the air suction device.

[0070] In a specific embodiment, Figure 7 This is a schematic flow chart of another embodiment of the control method of the air intake device provided in the present application. It should be noted that if there is substantially the same result, this embodiment is not limited to Figure 7 The process sequence shown is limited.

[0071] like Figure 7 As shown, the control method of the air intake device provided in this embodiment includes:

[0072] S500: Obtain air pressure difference data, and compare the air pressure difference data with a preset value. The air pressure difference data includes the difference between the external air pressure of 100 and the indoor air pressure. The external air pressure of 100 and the indoor air pressure are measured by the first air pressure detection element 81.

[0073] The controller obtains air pressure difference data and compares the air pressure difference data with a preset value. The air pressure difference data includes the difference between the external air pressure of 100° and the indoor air pressure. The external air pressure of 100° and the indoor air pressure are measured by the first air pressure detection element 81 .

[0074] In order to measure the outside air pressure 100 and the indoor air pressure, the first air pressure detection member 81 may specifically include a first air pressure sensor and a second air pressure sensor, and the controller can be connected to the first air pressure sensor, the second air pressure sensor and the second diverter valve 62. The first air pressure sensor is used to detect the indoor air pressure, and the second air pressure sensor is used to detect the outside air pressure 100. The controller can obtain the indoor air pressure and the outside air pressure 100 measured by the first air pressure sensor and the second air pressure sensor, and obtain the air pressure difference between the outside air pressure 100 and the indoor air pressure by calculating the difference between the outside air pressure 100 and the indoor air pressure.

[0075] Furthermore, in the case where the air pressure difference is the difference between the data measured by the first air pressure sensor and the second air pressure sensor, the air pressure data of the outside world 100 measured by the second air pressure sensor can be directly used to compare with the wind pressure data output to the outside when the air inhalation device works at a normal or default power. When the air pressure data of the outside world 100 is less than this wind pressure data, it means that the air inhalation device can output positive pressure to the outside world 100, and the second diverter valve 62 can be opened to discharge aerosol to the outside world 100. When the air pressure data of the outside world 100 is greater than or equal to this wind pressure data, the second diverter valve 62 can be kept closed to reduce the probability of adverse conditions such as backflow.

[0076] S600 : In response to the air pressure difference data being less than a preset value, controlling the second diverter valve 62 to connect the connecting channel 12 with the air inlet channel 2 .

[0077] In response to the air pressure difference data being less than a preset value, the controller controls the second diverter valve 62 to connect the connecting channel 12 with the air inlet channel 2 , thereby directly discharging aerosol to the outside 100 via the connecting channel 12 .

[0078] Among them, the preset value is based on the pressure difference data that will not cause adverse conditions such as smoke backflow when the suction fan 9 of the suction device works at normal or default power. When the actually measured pressure difference data is less than the pressure difference data, the suction device can maintain a normal working state.

[0079] Through the method provided in this embodiment, the first air pressure detection component 81 can be used to detect the air pressure of the outside world 100 and the indoor air pressure, and the air pressure difference between the air pressure of the outside world 100 and the indoor air pressure can be obtained. The controller is connected to the second diverter valve 62, so that the opening time and opening degree of the second diverter valve 62 can be determined according to the air pressure difference between the air pressure of the outside world 100 and the indoor air pressure detected. When the air pressure difference is too large, the second diverter valve 62 is kept closed, so that the outside world 100 will not be directly connected to the air inlet channel 2 through the connecting channel 12, so that the aerosol in the air inlet channel 2 has the opportunity to enter the return air channel 4 after being processed by the purification component 11 and return to the room, thereby reducing the probability of further increasing the air pressure difference. When the air pressure difference is normal, the controller can open the second diverter valve 62, so as to discharge the aerosol directly to the outside world 100, which can reduce the use of the purification component 11 when there is no need to return the aerosol to the room, and can increase the life of the purification component 11 and improve the availability of the air inhalation equipment.

[0080] like Figure 7 As shown, in a specific implementation, after step S500, the control method of the air intake device may further include:

[0081] S700: In response to the air pressure difference data being greater than or equal to a preset value, wind pressure data is obtained from the second air pressure detection component 82 , and external air pressure data 100 is obtained from the first air pressure detection component 81 , wherein the wind pressure data includes the wind pressure output by the suction fan 9 .

[0082] In response to the air pressure difference data being greater than or equal to a preset value, the controller obtains wind pressure data from the second air pressure detection component 82 and obtains external air pressure data 100 from the first air pressure detection component 81 . The wind pressure data may include the wind pressure output by the suction fan 9 .

[0083] S800: Compare the air pressure difference data with the wind pressure data.

[0084] S901: In response to the wind pressure data being greater than or equal to the external air pressure data 100, the second diverter valve 62 is controlled to connect the connecting channel 12 with the air inlet channel 2.

[0085] In response to the wind pressure data being greater than or equal to the air pressure data of the outside world 100 , the controller controls the second diverter valve 62 to connect the connecting channel 12 with the air inlet channel 2 , thereby discharging the aerosol from the connecting channel 12 to the outside world 100 .

[0086] S902 : In response to the wind pressure data being less than the external air pressure data of 100°, the second diverter valve 62 is controlled to isolate the connecting channel 12 from the air inlet channel 2 .

[0087] In response to the wind pressure data being less than the external air pressure data of 100°, the controller controls the second diverter valve 62 to isolate the connecting channel 12 from the air inlet channel 2, so that the aerosol in the air inlet channel 2 can be processed by the purification component 11 and then discharged back into the room from the return air channel 4.

[0088] In this embodiment, the second air pressure detection member 82 may include an air pressure detection sensor, which is arranged toward the output end of the suction fan 9. The airflow output by the suction fan 9 impacts the air pressure detection sensor, so that it can detect the wind pressure output by the suction fan 9, and then the controller can compare the wind pressure with the air pressure of the outside 100. When the wind pressure is greater than or equal to the air pressure of the outside 100, even if the air pressure difference between the air pressure of the outside 100 and the indoor air pressure is too large, the need to exhaust air to the outside 100 can still be met. At this time, the controller can control the second diverter valve 62 to connect the connecting channel 12 and the air inlet channel 2 to discharge aerosol to the outside 100, so as to meet the need to discharge indoor oil smoke when the air pressure difference is too large, increase the adaptation scene of the suction device, and improve the availability of the suction device. After judging that the wind pressure data cannot meet the need to discharge oil smoke, the aerosol can also be returned to the room after purification to alleviate the negative pressure in the room, prompting the suction device to recover from the abnormal state of being unable to discharge oil smoke to the outside 100 to the normal working state of exhausting oil smoke, which can improve the stability and availability of the suction device.

[0089] Mentioning "embodiment" and "implementation method" in this application means that the specific features, structures or characteristics described in conjunction with the embodiment may be included in at least one embodiment of the present application. The appearance of the phrases in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described in this application can be combined with other embodiments. In addition, it should also be understood that the features, structures or characteristics described in the various embodiments of the present application can be arbitrarily combined to form another embodiment that does not deviate from the spirit and scope of the technical solution of the present application, if there is no contradiction between them.

[0090] Finally, it should be noted that the above implementation modes are only used to illustrate the technical solution of the present application and are not intended to limit it. Although the present application has been described in detail with reference to the above preferred implementation modes, a person of ordinary skill in the art should understand that the technical solution of the present application may be modified or replaced by equivalents without departing from the spirit and scope of the technical solution of the present application.

Claims

1. A suction device, characterized in that: Aerosols for inhalation indoors, including: The device body (1) is formed with an air inlet channel (2), an air outlet channel (3) and a return air channel (4); one end of the air inlet channel (2) is an indoor air inlet (21); one end of the air outlet channel (3) is used to communicate with the outside (100); the other end of the air outlet channel (3) is connected to the other end of the air inlet channel (2) away from the indoor room; one end of the return air channel (4) is connected to the other end of the air inlet channel (2) away from the indoor room; and the other end of the return air channel (4) is used to communicate with the indoor room; A detection component, arranged in the air inlet channel (2), and used for detecting aerosol in the air inlet channel (2); A first diverter valve (61), signal-connected to the detection assembly; The air inlet channel (2), the air outlet channel (3) and the return air channel (4) are connected via the first diverter valve (61); when the detection component detects that the aerosol is qualified, the first diverter valve (61) connects the air inlet channel (2) and the return air channel (4).

2. The air suction device according to claim 1, characterized in that The air intake device further comprises a purification component (11), the detection component comprises a first detection component (51), the purification component (11) is arranged in the air inlet channel (2), and the purification component (11) is closer to the indoor air intake port (21) relative to the first detection component (51).

3. The air suction device according to claim 2, characterized in that The air intake device further comprises a second diverter valve (62), the device body (1) further comprises a connecting channel (12), one end of the connecting channel (12) is connected to the outside (100), the air inlet channel (2) is provided with a diverter connection part (22), the diverter connection part (22) is located between the purification component (11) and the indoor air intake port (21), and the other end of the connecting channel (12), the diverter connection part (22) is connected to the second diverter valve (62).

4. The air suction device according to claim 3, characterized in that The air intake device further comprises a first air pressure detection component (81) and a controller, wherein the controller is connected to the first air pressure detection component (81) and the second diverter valve (62), the first air pressure detection component (81) is used to detect the external air pressure and the indoor air pressure, and the controller is used to obtain the air pressure difference between the external air pressure and the indoor air pressure.

5. The air suction device according to claim 4, characterized in that The detection assembly further comprises a second detection member (52), the second flow diverter valve (62) being a three-way valve, the second flow diverter valve (62) being connected to the air inlet channel (2), the connecting channel (12) and the room, the second detection member (52) being arranged in the air inlet channel (2) corresponding to the second flow diverter valve (62) and being used for detecting aerosol entering the air inlet channel (2), and the controller being further connected to the second detection member (52); When the second detection element (52) detects that the aerosol is qualified, the second diverter valve (62) connects the air inlet channel (2) with the room.

6. The air suction device according to claim 4, characterized in that The air intake device further comprises a second air pressure detection component (82) and a suction fan (9), wherein the suction fan (9) is arranged in the air inlet channel (2) between the diversion connection portion (22) and the indoor air intake port (21), and the second air pressure detection component (82) is connected to the controller, and the second air pressure detection component (82) is used to detect the air pressure output by the suction fan (9).

7. The air suction device according to any one of claims 1 to 6, characterized in that: The detection component includes a particle concentration sensor.

8. A method for controlling an air suction device, characterized in that: Utilizing the air suction device according to any one of claims 1 to 7, the control method of the air suction device comprises: Acquiring first detection data from a first detection element (51), wherein the first detection data includes the oil smoke content of the aerosol; comparing the first detection data with qualified data; In response to the first detection data being greater than the qualified data, the first diverter valve (61) is controlled to connect the air inlet channel (2) with the air outlet channel (3); or, in response to the first detection data being less than or equal to the qualified data, the first diverter valve (61) is controlled to connect the air inlet channel (2) with the return air channel (4).

9. The control method of the air suction device according to claim 8, characterized in that: Also includes: Acquiring air pressure difference data, and comparing the air pressure difference data with a preset value, the air pressure difference data comprising a difference between the outside air pressure and the indoor air pressure, the outside air pressure and the indoor air pressure being measured by a first air pressure detection element (81); In response to the air pressure difference data being less than the preset value, the second diverter valve (62) is controlled to connect the connecting channel (12) with the air inlet channel (2).

10. The control method of the air suction device according to claim 9, characterized in that: The method further comprises: obtaining air pressure difference data from the first air pressure detection element (81), and comparing the air pressure difference data with a preset value; In response to the air pressure difference data being greater than or equal to the preset value, obtaining wind pressure data from the second air pressure detection element (82), and obtaining external air pressure data from the first air pressure detection element (81), wherein the wind pressure data includes the wind pressure output by the suction fan (9); Comparing the air pressure difference data with the wind pressure data; In response to the wind pressure data being greater than the external air pressure data, the second diverter valve (62) is controlled to connect the connecting channel (12) and the air inlet channel (2); or, in response to the wind pressure data being less than the external air pressure data, the second diverter valve (62) is controlled to isolate the connecting channel (12) from the air inlet channel (2).

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