Air suction equipment

Abstract

The invention relates to the technical field of kitchen appliances, in particular to air suction equipment which comprises a fan and a purification assembly, at least a first output channel is formed in the air suction equipment, the input end of the fan is arranged indoors, one end of the first output channel communicates with the output end of the fan, and the other end of the first output channel communicates with the indoor space. The purification assembly is at least arranged between the first output channel and the output end of the fan. By means of the structure, at least part of aerosol sucked by the air suction equipment can be treated through the purification assembly, the treated aerosol is discharged into a room, the indoor air pressure is not reduced too fast compared with the outdoor air pressure, the working pressure of the draught fan can be reduced, the probability of occurrence of adverse conditions such as smoke backflow can be reduced, and the usability of the air suction equipment is improved.

Description

Technical Field

[0001] The invention relates to the technical field of kitchen appliances, and in particular to an 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 aerosols to the outdoors, causing a gradual pressure difference between indoors and outdoors, resulting in serious indoor negative pressure, making it more likely that the range hood will 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 invention provides an air suction device capable of alleviating 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 in the present application is: to provide an air intake device, including a fan and a purification component, wherein at least a first output channel is formed in the air intake device, the input end of the fan is arranged indoors, one end of the first output channel is connected to the output end of the fan, and the other end is connected to the indoors, and the purification component is at least arranged between the first output channel and the output end of the fan.

[0006] In a specific embodiment, a second output channel is further formed in the air suction device, one end of the second output channel is connected to the output end of the fan, and the other end is connected to the outside of the room.

[0007] In a specific embodiment, the air inhalation device includes a sensor component, a diverter valve and a control component. The diverter valve is arranged between the output end of the fan and the first output channel and the second output channel. The control component connects the sensor component and the diverter valve. The sensor component is used to detect the air pressure difference between outdoor and indoor and output the detection result to the control component. When the detection result is greater than a specified parameter, the control component drives the diverter valve to increase the proportion of aerosol output by the fan to the first output channel.

[0008] In a specific embodiment, the purification component is disposed between the second output channel and the output end of the fan.

[0009] In a specific embodiment, an intake channel is also formed in the air intake device, one end of the intake channel is connected to the input end of the fan, and the other end is connected to the room, an air intake port facing a first direction is formed at one end of the intake channel away from the fan, and at least one air outlet is formed at one end of the first output channel away from the fan, and the air outlet is arranged around the intake port.

[0010] In a specific embodiment, the number of the air outlets is at least two, at least two of the air outlets are evenly arranged around the air inlet, and the angle between the orientation of the air outlet and the first direction is greater than or equal to 90°.

[0011] In a specific embodiment, the number of the air outlets is at least two, at least two of the air outlets are evenly arranged around the air inlet, and the air outlets are arranged toward the first direction.

[0012] In a specific embodiment, the purification component includes at least one layer of condensation net, the condensation net is provided with a plurality of through holes, and the aerosol output by the fan enters the first output channel through the through holes.

[0013] In a specific embodiment, the purification component includes a condenser, one end of the condenser is connected to the output end of the fan, and the other end is connected to the first output channel, and the condenser is coiled.

[0014] In one embodiment, the purification component includes an adsorbent material.

[0015] The beneficial effects of the present application include: by arranging a purification component in the air intake device, the purification component is used to purify at least part of the aerosol inhaled by the fan, and the treated aerosol can be output back to the room using the first output channel, while reducing the oil fume content in the indoor aerosol, the purified aerosol can be discharged back to the room to balance the pressure reduction in the room caused by the fan's air intake, alleviate the obvious indoor and outdoor air pressure difference, thereby reducing the fan's intake pressure, reducing the probability of adverse conditions such as smoke backflow, and improving the availability of the air intake device. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solution of the embodiment of the present invention, the drawings required for use in the implementation mode will be briefly introduced below. Obviously, the drawings described below are some implementation modes of the present invention. 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 by the present invention;

[0018] Figure 2 A schematic diagram of the structure of the fan provided by the present invention;

[0019] Figure 3 A schematic structural diagram of an embodiment of an air intake device provided by the present invention;

[0020] Figure 4 A schematic structural diagram of another embodiment of the air intake device provided by the present invention;

[0021] Figure 5 A cross-sectional structure and a schematic diagram of aerosol flow direction of an embodiment of an air inhalation device provided by the present invention;

[0022] Figure 6 A cross-sectional structure and aerosol flow diagram of another embodiment of the air inhalation device provided by the present invention.

[0023] Description of reference numerals:

[0024] 1. Air suction equipment; 11. Fan; 12. Purification component; 13. First output channel; 131. Air outlet; 14. Second output channel; 15. Intake channel; 151. Air intake; 16. Sensor component; 17. Diverter valve. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0026] The terms "first", "second", etc. in the specification and claims of the present invention 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 may optionally include steps or units that are not listed, or may optionally include other steps or units that are inherent to these processes, methods, products or devices.

[0027] References to "embodiments" or "implementations" herein mean that a particular feature, structure, or characteristic described in conjunction with the embodiments or implementations may be included in at least one embodiment of the present invention. 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 of 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.

[0028] 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.

[0029] Common range hoods currently use fans to directly inhale smoke from indoors and then exhaust it outdoors, thus preventing smoke from being inhaled by cooks to a certain extent. However, range hoods set up in this way will continue to exhaust indoor aerosols to the outdoors, causing a gradual pressure difference between indoors and outdoors, resulting in serious indoor negative pressure. The range hood is 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.

[0030] 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.

[0031] See also Figure 1 , Figure 2 , Figure 3 , Figure 1 This is a schematic diagram of the assembly structure of the air intake device provided by the present invention. Figure 2 This is a schematic structural diagram of the fan provided by the present invention. Figure 3 The structure diagram of an embodiment of an air suction device 1 provided by the present invention. The embodiment of the present application provides an air suction device 1 for sucking aerosol in a specified space and discharging the aerosol to a specified position. The air suction device 1 may include a fan 11 and a purification component 12.

[0032] At least a first output channel 13 is formed in the air inhalation device 1, the input end of the fan 11 is arranged indoors, one end of the first output channel 13 is connected to the output end of the fan 11, and the other end is indoors. The purification component 12 is at least arranged between the first output channel 13 and the output end of the fan 11, so that the first output channel 13 can discharge the aerosol purified by the purification component 12 into the room under the action of the fan 11.

[0033] In the structure provided in this embodiment, by arranging a purification component 12 in the air intake device 1, the purification component 12 can be used to purify at least part of the aerosol inhaled by the fan 11, and the treated aerosol can be output back into the room by using the first output channel 13. While reducing the oil fume content in the indoor aerosol, the purified aerosol can be discharged back into the room to balance the pressure reduction in the room caused by the air intake of the fan 11, alleviate the situation where the indoor and outdoor air pressure difference is obvious, thereby reducing the air intake pressure of the fan 11, reducing the probability of adverse conditions such as backflow of smoke, and improving the availability of the air intake device 1.

[0034] In the air suction device 1, in order to ensure a good effect of suctioning and removing oil smoke, the air volume of the fan 11 is usually large, which brings a certain processing pressure to the purification component 12. When the purification component 12 is difficult to purify all the inhaled aerosols in a timely and effective manner, it may cause the working efficiency of the fan 11 to decrease, or cause the aerosols still containing a lot of oil smoke to be discharged back into the room. In either case, it is not conducive to the normal operation of the range hood.

[0035] In one embodiment of the present application, a second output channel 14 may be formed in the air inhalation device 1. One end of the second output channel 14 is connected to the output end of the fan 11, and the other end is connected to the outside. Through the structure provided in this embodiment, the air inhalation device 1 can discharge the aerosol back to the room after treatment, and can also use the second output channel 14 to discharge the aerosol to the outside, which can relieve the working pressure of the purification component 12, effectively remove the oil smoke in the indoor aerosol, and relieve the pressure difference between the indoor and outdoor.

[0036] In one embodiment of the present application, the air suction device 1 includes a sensor component 16, a diverter valve 17 and a control component. The diverter valve 17 is arranged between the output end of the fan 11 and the first output channel 13, and between the output end of the fan 11 and the second output channel 14. The control component connects the sensor component 16 and the diverter valve 17. The sensor component 16 is used to detect the pressure difference between the outdoor and indoor air pressures, and output the detection result to the control component.

[0037] When the detection result output by the sensor component 16 is greater than the specified parameter, the control component drives the diverter valve 17 to increase the proportion of the aerosol output by the fan 11 to the first output channel 13 .

[0038] Through the structure provided in this embodiment, the sensor component 16 can be used to detect the air pressure difference between outdoor and indoor, so as to adjust the ratio of aerosol output to the first output channel 13 and the second output channel 14 according to the change of the air pressure difference. When the air pressure difference between indoor and outdoor is too large, the aerosol of the fan 11 is made to flow more through the first output channel 13 and the purification component 12, so as to discharge more aerosol into the room, alleviate the negative pressure in the room, and improve the availability of the air inhalation device 1.

[0039] Optionally, in plain areas with lower altitudes, the outdoor air pressure usually fluctuates in a small range around a standard atmospheric pressure. The sensor component 16 can use a standard atmospheric pressure as the default outdoor air pressure, so that the sensor component 16 can only detect the current indoor air pressure, and subtract it from a standard atmospheric pressure to obtain an approximate indoor and outdoor air pressure difference.

[0040] On this basis, the control component may include a human-machine interface, through which the user can input commands to the control component, so that the control component modifies the default outdoor air pressure in response to the command to adapt to different usage environments of the air intake device 1, thereby improving the versatility of the air intake device 1.

[0041] Optionally, part of the sensor component 16 can be arranged indoors, and the other part can be arranged at the end of the second output channel 14 away from the fan 11. The two parts of the sensor component 16 are connected to each other. The sensor component 16 can be used to detect the indoor and outdoor air pressures respectively and make a difference between the two, thereby calculating the indoor and outdoor air pressure difference.

[0042] In an embodiment of the present application, the purification component 12 can be disposed between the second output channel 14 and the output end of the fan 11. The purification component 12 can be used to process the aerosol output to the outside to reduce the oil fume content therein, thereby reducing the oil fume discharged to the outside without affecting the indoor oil fume removal effect, reducing the pollution to the external environment, and improving the usability of the air inhalation device 1.

[0043] See also Figure 5 , Figure 6 , Figure 5 A cross-sectional structure and aerosol flow diagram of an embodiment of an air inhalation device provided by the present invention. Figure 6 This is a cross-sectional view of another embodiment of the air inhalation device provided by the present invention and a schematic diagram of the aerosol flow direction. In one embodiment of the present application, an inhalation channel 15 may also be formed in the air inhalation device 1.

[0044] One end of the suction channel 15 is connected to the input end of the fan 11, and the other end is connected to the room. The end of the suction channel 15 away from the fan 11 is provided with a suction port 151 facing the first direction. The end of the first output channel 13 away from the fan 11 is provided with at least one air outlet 131, and the air outlet 131 is arranged around the suction port 151.

[0045] Through the structure provided in this embodiment, the aerosols processed by the purification component 12 can be discharged around the air intake port 151, and these aerosols are used to form a protective or guiding airflow, so that the aerosols that have not yet been inhaled by the fan 11 can enter the suction channel 15 through the air intake port 151, thereby reducing the probability of aerosols with a large amount of oil fume content escaping to positions outside the air intake port 151, reducing the probability of oil fume contacting cooking operators, and improving the efficiency of removing indoor oil fume and the availability of the air intake device 1.

[0046] At the same time, if Figure 5 , Figure 6 The structure in which the air outlet 131 is arranged at the lower side of the air suction device 1 can be applied to a hidden air suction device 1. For the sake of lightness and beauty, the hidden air suction device 1 usually has only the lower side panel exposed indoors, and the rest of the main body is embedded in the wall and / or cabinet, and the air suction port 151 is arranged toward the cooking area below the air suction device 1. Since the aerosol near the cooking area usually moves upward naturally due to the high temperature, the air outlet 131 is arranged at the lower side, which not only meets the installation requirements of the hidden air suction device 1, but also can effectively act on the air suction port 151 at the lower side to help it inhale the aerosol near the cooking area.

[0047] Alternatively, if Figure 3 , Figure 4 As shown, Figure 4 The air outlet 131 can be directly arranged on different sides of the main body of the air inhalation device 1, and the number of the air outlet 131 can also be multiple, so as to discharge the purified aerosol back into the room.

[0048] like Figure 5 As shown, in one embodiment of the present application, the number of air outlets 131 is at least two, and at least two air outlets 131 are evenly arranged around the air inlet 151, and the angle between the direction of the air outlet 131 and the first direction is greater than or equal to 90°. Thus, an airflow toward the inhalation channel 15 is formed near the air inlet 151, thereby increasing the aerosol flow rate near the air inlet 151, helping to inhale the aerosol, and also making the aerosol move more smoothly in the inhalation channel 15, the first output channel 13, and the second output channel 14, meeting the exhaust requirements. The airflow of the air outlet 131 can also play a guiding role, increase the capture distance of the air inhalation device 1, and improve the working efficiency of the air inhalation device 1.

[0049] like Figure 6As shown, in one embodiment of the present application, the number of air outlets 131 is at least two, and at least two air outlets 131 are evenly arranged around the air inlet 151, and the air outlets 131 are arranged toward the first direction. The multiple air outlets 131 form air curtains in different directions, so that the airflow near the cooking area mainly moves to the air inlet 151 between the multiple air curtains under the isolation of the air curtains, reducing the escape of oil smoke and improving the working efficiency of the air suction device 1.

[0050] Optionally, natural gas, liquefied petroleum gas, artificial gas, biomass fuel, electricity and other energy sources are common energy sources in daily cooking, among which natural gas, liquefied petroleum gas, artificial gas and electricity need to be continuously supplied through pipelines, and biomass fuels also mostly need chimneys to help supply oxygen, discharge exhaust gas and balance air pressure when burning. Pipelines, chimneys and other structures usually need to be installed on the wall, and the air intake device 1 itself usually needs the wall to bear the weight, which causes the oil smoke generated in the cooking area to easily condense and adhere to the wall, making it difficult to clean, affecting the appearance and easily breeding bacteria. Therefore, the air outlet 131 arranged along the first direction can be specifically arranged on the side of the air intake port 151 close to the wall, so as to form an air curtain to protect the wall and reduce the probability of oil smoke condensing and hanging on the wall.

[0051] Optionally, the air outlet 131 arranged along the first direction can also be arranged on the side of the air intake port 151 close to the operator of the cooking area to form an air curtain to protect the operator, which can reduce the adverse effects of oil smoke on the operator and improve the availability of the air intake device 1.

[0052] In one embodiment of the present application, the purification component 12 includes at least one layer of condensation net, which is provided with a plurality of through holes, and the aerosol output by the fan 11 enters the first output channel 13 through the through holes. The condensation net can cool the aerosol passing through it, so that the oil fume particles or liquid in the aerosol condenses on the condensation net, thereby achieving the purpose of removing the oil fume in the aerosol to a certain extent. And after the aerosol passes through the mesh of the condensation net, due to the small mesh size, the flow rate of the aerosol will increase to a certain extent, which is conducive to the subsequent movement of the aerosol in the first output channel 13.

[0053] In one embodiment of the present application, the purification component 12 may include a condenser, one end of which is connected to the output end of the fan 11, and the other end is connected to the first output channel 13, and the condenser is arranged in a coiled manner. The condenser can cool the aerosol passing through it, so that the oil fume particles or liquid in the aerosol condenses on the inner wall of the condenser, thereby achieving the purpose of removing the oil fume in the aerosol to a certain extent. In order to improve the purification effect of cooling and condensation, the length of the condenser can be set to be longer, and the radial dimension can be set to be smaller, so as to achieve the purpose of improving the purification effect and increasing the flow rate of the aerosol, which is beneficial to the subsequent movement of the aerosol in the first output channel 13.

[0054] In one embodiment of the present application, the purification component 12 may include an adsorption material. Among them, the adsorption material may include at least one of activated carbon, silicate, aluminosilicate, activated alumina, silica gel, calcium carbide, carbon molecular sieve, polyacrylamide, clay and the like. These adsorption materials may be arranged in the purification component 12 in the form of blocks, particles, films and the like, so as to perform adsorption and purification treatment on the aerosol passing through the purification component 12.

[0055] Optionally, the adsorption material can also be in liquid state. The aerosol can enter the liquid surface on one side and pass through the adsorption material in the form of bubbles. The liquid adsorption material can quickly cool the bubbles, causing the oil smoke with a higher boiling point to condense and remain in the adsorption material. The remaining gas escapes from the liquid surface on the other side and enters the first output channel 13, thereby achieving the purpose of purification.

[0056] In addition, the purification component 12 may also include a centrifugal separation element, which performs a centrifugal operation on the aerosol entering therein, so that the droplets and particles therein are "thrown" onto the inner wall of the centrifugal separation element by centrifugal force. The centrifugal process can also achieve the purpose of increasing the aerosol flow rate and helping the aerosol to cool down. Optionally, an adsorption material can also be arranged in the centrifugal separation element to adsorb the separated oil smoke, making it difficult for it to adhere to the inner wall of the centrifugal separation element and affect the normal operation of the centrifugal separation element.

[0057] Mentioning "embodiment" and "implementation method" in the present invention 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 invention. The appearance of the phrases in various places 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 the present invention can be combined with other embodiments. In addition, it should be understood that the features, structures or characteristics described in the various embodiments of the present invention can be arbitrarily combined to form another embodiment that does not deviate from the spirit and scope of the technical solution of the present invention, provided that there is no contradiction between them.

[0058] Finally, it should be noted that the above implementation modes are only used to illustrate the technical solution of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the above preferred implementation modes, those skilled in the art should understand that the technical solution of the present invention can be modified or replaced by equivalents without departing from the spirit and scope of the technical solution of the present invention.

Claims

1. A suction device, characterized in that: It comprises a fan (11) and a purification component (12); At least a first output channel (13) is formed in the air intake device (1); the input end of the fan (11) is arranged indoors; one end of the first output channel (13) is connected to the output end of the fan (11), and the other end is connected to the indoors; the purification component (12) is at least arranged between the first output channel (13) and the output end of the fan (11).

2. The air suction device according to claim 1, characterized in that A second output channel (14) is also formed in the air intake device (1), one end of the second output channel (14) is connected to the output end of the fan (11), and the other end is connected to the outside of the room.

3. The air suction device according to claim 2, characterized in that The air intake device (1) comprises a sensor component (16), a diverter valve (17) and a control component, wherein the diverter valve (17) is arranged between the output end of the fan (11) and the first output channel (13) and the second output channel (14), and the control component is connected to the sensor component (16) and the diverter valve (17), and the sensor component (16) is used to detect the difference in air pressure between outdoor and indoor air pressure and output the detection result to the control component; When the detection result is greater than a specified parameter, the control component drives the diverter valve (17) to increase the proportion of aerosol output by the fan (11) to the first output channel (13).

4. The air suction device according to claim 2, characterized in that The purification component (12) is arranged between the second output channel (14) and the output end of the fan (11).

5. The air suction device according to claim 1, characterized in that The air intake device (1) also has an intake channel (15), one end of the intake channel (15) being connected to the input end of the fan (11), and the other end being connected to the interior of the room, an end of the intake channel (15) away from the fan (11) being provided with an air intake port (151) facing a first direction, and an end of the first output channel (13) away from the fan (11) being provided with at least one air outlet (131), and the air outlet (131) being arranged around the intake port (151).

6. The air suction device according to claim 5, characterized in that The number of the air outlets (131) is at least two, at least two of the air outlets (131) are evenly arranged around the air inlet (151), and the angle between the orientation of the air outlets (131) and the first direction is greater than or equal to 90°.

7. The air suction device according to claim 5, characterized in that The number of the air outlets (131) is at least two, at least two of the air outlets (131) are evenly arranged around the air inlet (151), and the air outlets (131) are arranged toward the first direction.

8. The air suction device according to any one of claims 1 to 7, characterized in that: The purification component (12) comprises at least one layer of condensation net, the condensation net is provided with a plurality of through holes, and the aerosol output by the fan (11) enters the first output channel (13) through the through holes.

9. The air suction device according to any one of claims 1 to 7, characterized in that: The purification component (12) comprises a condenser, one end of which is connected to the output end of the fan (11), and the other end of which is connected to the first output channel (13), and the condenser is arranged in a coiled manner.

10. The air suction device according to any one of claims 1 to 7, characterized in that: The purification component (12) includes an adsorbent material.

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