CN110657467A

CN110657467A - Range hood and control method thereof

Info

Publication number: CN110657467A
Application number: CN201810686516.4A
Authority: CN
Inventors: 康作添; 梁海生
Original assignee: FOSHAN CITY SHUNDE DISTRICT HEJIE ELECTRICAL APPLIANCE INDUSTRIAL Co Ltd
Current assignee: FOSHAN CITY SHUNDE DISTRICT HEJIE ELECTRICAL APPLIANCE INDUSTRIAL Co Ltd
Priority date: 2018-06-28
Filing date: 2018-06-28
Publication date: 2020-01-07

Abstract

The invention discloses a control method of a range hood, wherein the range hood is provided with an airflow channel, the airflow channel comprises an air inlet and an air outlet, the range hood comprises a fan and an ozone generating device which are both arranged in the airflow channel, the ozone generating device comprises a frame and a plurality of turns of coils wound on the frame, the plurality of turns of coils are arranged at intervals, at least two turns of coils are used for ionizing air to form ozone after working voltage is applied, the fan is used for establishing airflow from the air inlet to the air outlet, and the control method comprises the following steps: acquiring the current air volume in the airflow channel; and controlling the ozone generating device to operate at the corresponding power according to the current air volume, wherein the current air volume and the corresponding power are in positive correlation. According to the control method of the range hood, the ozone generating device can be simply controlled to operate at the corresponding power according to the current air quantity in the air flow channel, the energy is saved, the purification effect is good, and the automation degree of the range hood for purifying air is improved.

Description

Range hood and control method thereof

Technical Field

The invention relates to the technical field of smoke exhaust, in particular to a range hood and a control method thereof.

Background

In the related art, the range hood absorbs oil smoke generated in a kitchen and then discharges the oil smoke to the outside, so that the harm of the oil smoke and other gases to the health can be prevented. However, in the related art, the range hood has a poor effect of purifying the soot.

Disclosure of Invention

The present invention is directed to solving at least one of the problems of the prior art. Therefore, the invention provides a control method of a range hood and the range hood.

The invention provides a control method of a range hood. Smoke ventilator is formed with airflow channel, airflow channel includes air intake and air exit, smoke ventilator including all set up in fan and ozone generating device in the airflow channel, ozone generating device includes the frame and winds and establishes multiturn coil on the frame, multiturn coil interval is arranged, wherein, two at least circles the coil is used for ionizing the air and forming ozone after applying operating voltage, the fan is used for establishing the follow the air intake extremely the air current between the air exit, control method includes the step:

acquiring the current air volume in the airflow channel; and

and controlling the ozone generating device to operate at a corresponding power according to the current air volume, wherein the current air volume and the corresponding power are in a positive correlation relationship.

The invention provides a range hood. Smoke ventilator is formed with airflow channel, airflow channel includes air intake and air exit, smoke ventilator including all set up in fan and ozone generating device in the airflow channel, ozone generating device includes the frame and winds and establishes multiturn coil on the frame, multiturn coil interval is arranged, wherein, two at least circles the coil is used for ionizing the air and forming ozone after applying operating voltage, the fan is used for establishing the follow the air intake extremely air between the air exit, smoke ventilator still includes:

a wind pressure sensor disposed in the airflow channel, the wind pressure sensor being configured to detect a wind pressure in the airflow channel; and

and the controller is used for acquiring the current air volume in the airflow channel according to the output signal of the wind pressure sensor and controlling the ozone generating device to operate with corresponding power according to the current air volume, and the current air volume and the corresponding power are in a positive correlation relationship.

According to the control method of the range hood and the range hood, the ozone generating device can be simply controlled to operate at corresponding power according to the current air quantity in the air flow channel, the energy is saved, the purification effect is good, and the automation degree of air purification of the range hood is improved.

In some embodiments, the step of obtaining the current air volume in the airflow channel comprises:

acquiring the current rotating speed of the fan; and

and calculating the current air volume according to the current rotating speed.

In some embodiments, the range hood includes a wind pressure sensor disposed in the airflow channel, the wind pressure sensor is configured to detect wind pressure in the airflow channel, and the step of obtaining the current amount of wind in the airflow channel includes: and calculating to obtain the current air volume according to the output signal of the wind pressure sensor.

In some embodiments, the control method further comprises, before the step of obtaining the current air volume in the airflow channel, the steps of:

judging whether wind pressure exists in the airflow channel or not; and

and when wind pressure exists in the airflow channel, the ozone generating device is started.

In some embodiments, the range hood includes a wind pressure sensor disposed in the airflow channel, the wind pressure sensor is configured to detect wind pressure in the airflow channel, and the step of determining whether wind pressure exists in the airflow channel includes: and judging whether the air pressure exists in the airflow channel according to the output signal of the air pressure sensor.

In some embodiments, the controller is configured to obtain a current speed of the fan; and calculating the current air volume according to the current rotating speed.

In some embodiments, the controller is configured to calculate the current air volume according to an output signal of the wind pressure sensor.

In some embodiments, the controller is configured to determine whether a wind pressure exists in the airflow channel; and turning on the ozone generating device when wind pressure exists in the airflow channel.

In some embodiments, the controller is configured to determine whether a wind pressure exists in the airflow channel according to an output signal of the wind pressure sensor.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

fig. 1 is a schematic perspective view of a range hood according to an embodiment of the present invention;

FIG. 2 is a schematic cross-sectional view of the range hood of FIG. 1 taken along direction II-II;

FIG. 3 is an exploded schematic view of an air purification module according to an embodiment of the present invention;

FIG. 4 is a schematic perspective view of an air purification module according to an embodiment of the present invention;

FIG. 5 is a schematic cross-sectional view of the range hood of FIG. 4 taken along the direction V-V;

figure 6 is the embodiment of the invention of the ozone generating device three-dimensional schematic diagram;

figures 7-9 are schematic circuit diagrams of ozone generation devices of embodiments of the present invention for producing ozone;

FIG. 10 is a schematic diagram showing the sterilization (natural bacteria) efficiency of the air purification module according to the embodiment of the present invention in relation to the ozone generator;

FIG. 11 is a schematic diagram showing the relationship between the ammonia removal rate and the ozone generation device of the air purification module according to the embodiment of the present invention;

FIG. 12 is a schematic diagram showing the relationship between the benzene removal rate and the ozone generating device of the air purification module according to the embodiment of the present invention;

FIG. 13 is a schematic diagram showing the relationship between the PM2.5 removal rate of the air purification module and the ozone generation device according to the embodiment of the present invention;

figures 14-16 are plan view schematic diagrams of an ozone generator according to an embodiment of the present invention;

FIG. 17 is a schematic perspective view of an activated carbon module according to an embodiment of the present invention;

FIG. 18 is a schematic plan view of an activated carbon module according to an embodiment of the invention;

fig. 19 is a flowchart schematically illustrating a control method of the hood according to the embodiment of the present invention;

fig. 20 is a flowchart illustrating a method of controlling the range hood according to another embodiment of the present invention.

Description of the main element symbols:

the range hood 1000, the air purification module 100, the purification housing 10, the cylinder 11, the purification air duct 12, the purification air inlet 122, the purification air outlet 124, the upper cover element 14, the upper cover plate 141, the upper grid structure 1412, the upper mounting ring 144, the lower cover element 16, the lower cover plate 161, the lower grid structure 1612, the lower mounting ring 164, the ozone generating device 20, the frame 22, the connecting plate 222, the connecting column 224, the coil 24, the high-voltage transformer 50, the switch 60, the button 62, the switch box cover 70, the activated carbon purification unit 80, the activated carbon module 802, the filter hole 8022, the fixing ring 804, the fan 200, the power socket 300, the housing 400, the air flow channel 401, the air inlet 402, the air outlet 403, the power supply device 500, the wind pressure sensor 600, the controller 700, the length a, the width B, the spacing C, the thickness D, the diameter E, the sectional.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be considered as limiting the present invention. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", may explicitly or implicitly include one or more of the described features. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; may be mechanically connected, may be electrically connected or may be in communication with each other; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

The following disclosure provides many different embodiments or examples for implementing different features of the invention. To simplify the disclosure of the present invention, the components and arrangements of specific examples are described below. Of course, they are merely examples and are not intended to limit the present invention. Furthermore, the present invention may repeat reference numerals and/or letters in the various examples, such repetition is for the purpose of simplicity and clarity and does not in itself dictate a relationship between the various embodiments and/or configurations discussed. In addition, the present invention provides examples of various specific processes and materials, but one of ordinary skill in the art may recognize applications of other processes and/or uses of other materials.

Referring to fig. 1 and 2, a range hood 1000 according to an embodiment of the present invention includes an air purification module 100 and a blower 200.

Referring to fig. 3, 4 and 5, an air purification module 100 according to an embodiment of the present invention includes a purification housing 10 formed with a purification air duct 12, and an ozone generating device 20 and an activated carbon purification unit 80 disposed in the purification air duct. The purification air duct 12 is formed with the purification air inlet 122 and purifies the air outlet 124, and ozone generating device 20 and active carbon purification unit 80 set up along purifying air inlet 122 to purifying the direction of air outlet 124 at the interval in proper order, and active carbon purification unit 80 includes active carbon module 802, and active carbon module 802 is formed with a plurality of filtration holes 8022 that communicate purification air inlet 122 and purify air outlet 124, and a plurality of filtration holes 8022 are the array and arrange. The fan 200 is used to suck and discharge the gas to the purge air duct 12.

The air purification module 100 of the embodiment of the invention has a simple structure and better effects of removing peculiar smell and purifying air by arranging the activated carbon purification unit 80.

The activated carbon is a very fine carbon particle having a large surface area, and thus, the activated carbon can be sufficiently contacted with air. In addition, there are finer pores, capillaries, in the carbon granules. The capillary has strong adsorption capacity, and impurities in the air can be adsorbed when contacting the capillary, so that the air is purified. The activated carbon adsorption method has the advantages of wide application, mature process, safety, reliability and more types of absorbed substances, and the activated carbon purification unit 80 is arranged on the air purification module 100, so that the method is simple and convenient, and is beneficial to further evolution of air and removal of peculiar smell.

The purification casing 10 of the air purification module 100 is substantially in the shape of a square cylinder. Thus, when the appearance of the range hood 1000 is more attractive, the structure of the range hood 1000 can be more compact, and the range hood 1000 is favorably miniaturized. It is understood that in other embodiments, the purification housing 10 may have other shapes such as a cylindrical shape, a polygonal cylindrical shape, etc. In addition, the purification case 10 and the blower case may be made of plastic.

Referring to fig. 6, the ozone generator 20 includes a frame 22 and a plurality of coils 24 wound on the frame 22, wherein the plurality of coils 24 are arranged at intervals, and at least two coils 24 apply a working voltage therebetween to ionize air to form ozone.

The hood 1000, the air purification module 100, and the ozone generating device 20 according to the embodiment of the present invention ionize air by the coil 24 to form ozone, so that the ozone generating device 20 has a simple structure and can generate sufficient ozone to remove odor.

It is understood that ozone is a strong oxidant, which can destroy the cell wall of the decomposing bacteria, thus diffusing into the cell and oxidizing glucose oxidase and the like necessary for the decomposing bacteria to oxidize glucose, and can also directly react with bacteria and viruses, thus destroying the metabolism and reproduction process of the bacteria. In addition, ozone can oxidize various odorous inorganic or organic substances, and for example, ozone can decompose odorous gases such as ammonia, benzene, hydrogen sulfide, and the like, thereby performing a deodorizing function. In a word, the time of ozone sterilization, disinfection and deodorization is short, the effect is strong, and the ozone generator 20 is used for ionizing air to form ozone so as to remove peculiar smell, so that a better effect can be achieved.

Fig. 7, 8 and 9 are schematic circuit diagrams of ozone generator 20 for producing ozone, and ozone generator 20 of the present embodiment produces ozone by corona discharge. Specifically, in ozone generating device 20, oxygen molecules are excited by electrons to obtain energy, and elastically collide with each other, and are polymerized into ozone molecules. The chemical equation for the ozone generator 20 to ionize air to form ozone is:

3O₂→2O₃

referring to fig. 10 and table 1 below, fig. 10 is a schematic diagram showing the relationship between the sterilization (natural bacteria) efficiency and the ozone generating device 20 of the air purification module according to the embodiment of the present invention, wherein the horizontal axis represents the power of the ozone generating device 20 in watts (W) and the vertical axis represents the sterilization (natural bacteria) efficiency in percentage (%). Table 1 shows the results of analysis and detection of the antibacterial (bacteria-removing) function of natural bacteria in the air purification module 100 according to the embodiment of the present invention. The detection test shows that the sterilizing (natural bacteria) efficiency of the ozone generating device 20 reaches 92.4% after 24 hours, and the sterilizing effect is good.

TABLE 1

Please refer to fig. 11, fig. 12 and table 2. Fig. 11 is a graph showing the relationship between the ammonia removal rate of the air purification module and the ozone generation device 20 according to the embodiment of the present invention, in which the horizontal axis represents the power of the ozone generation device 20 in watts (W) and the vertical axis represents the ammonia removal rate in percentage (%). Fig. 12 is a graph showing the relationship between the benzene removal rate and the ozone generating device in the air purification module according to the embodiment of the present invention, in which the horizontal axis represents the power of the ozone generating device 20 in watts (W) and the vertical axis represents the benzene removal rate in percentage (%). Table 2 shows the results of the analysis and detection of ammonia and benzene in the air purification module 100 according to the embodiment of the present invention. The detection test shows that after 24 hours, the air purification module 100 achieves 88.7% of ammonia removal rate and 97.6% of benzene removal rate, and the effect is good.

TABLE 2

Table 3 shows the results of the analysis and detection of the antibacterial (sterilizing) function of staphylococcus albus 8799 by the air purification module 100 according to the embodiment of the present invention. The detection test shows that after 1 hour, the antibacterial (degerming) rate of the air purification module 100 to the staphylococcus albus 8799 is about 95%, and the effect is good.

TABLE 3

Referring to fig. 13 and table 4, fig. 13 is a schematic diagram showing the relationship between the PM2.5 removal rate of the air purification module and the ozone generator 20 according to the embodiment of the present invention,

wherein the horizontal axis represents the power of the ozone generating device 20 in watts (W), and the vertical axis represents the PM2.5 removal rate in percentage (%). Table 4 shows the result of analyzing and detecting PM2.5 in the air purification module 100 according to the embodiment of the present invention. The detection test shows that the PM2.5 removal rate of the ozone generating device 20 within 4 hours reaches 96.3%, and the effect is good.

TABLE 4

Table 5 shows the analysis and detection results of the air purification module 100 according to the embodiment of the present invention with respect to the amount of the clean air of PM 2.5. The test showed that the amount of clean air for PM2.5 of the ozone generator 20 reached 15.5m³That is, the ozone generator 20 has a high removal rate and a large amount of clean air.

TABLE 5

As can be seen from the above graph, the air purification module 100 according to the embodiment of the present invention has a removal rate of 92.4% for natural bacteria, 96.3% for PM2.5, 88.7% for ammonia, 97.6% for benzene, and about 95% for staphylococcus albus. That is, the detection test shows that the removal rate of the air purification module 100 according to the embodiment of the present invention for each removal object can reach over 88%, and the removal rate for most removal objects can reach about 95%, which has a good effect.

In some embodiments, the frame 22 includes two connecting plates 222 and a plurality of connecting posts 224, the two connecting plates 222 being disposed opposite and spaced apart. A plurality of connecting posts 224 connect the two connecting plates 222 and are spaced apart. The multi-turn coil 24 is wound on a plurality of connecting posts 224 and arranged at intervals along the axial direction of the connecting posts 224.

In one example, as shown in FIG. 6, there are four connection posts 224; in another example, there are six connecting posts 224; in yet another example, there are eight connecting posts 224. The number of connecting posts 224 is not limited herein.

In some embodiments, both connection plates 222 are insulators. In this way, the two connecting plates 222 can shield the electric field generated by the coil, and prevent the electric field from leaking to improve the safety of the ozone generating device 20. Specifically, the connection plate 222 may be made of an insulating material such as acryl. The two connection plates 222 may be symmetrically distributed about a central axis of the air purification module 100.

Referring to fig. 6, in some embodiments, each connection plate 222 has a rectangular cross section, the length a of the connection plate 222 is 145-150mm, and the width B is 150-160 mm.

It can be understood that, since the purifying housing 10 is in the shape of a square cylinder, the connecting plate 222 with a rectangular cross section can be adapted to the purifying housing 10, so that the air purifying module 100 is more compact, which is beneficial to the miniaturization of the air purifying module 100.

In addition, the length A of the connection plate 222 can be arbitrarily set within the range of 145-150mm, and the width B of the connection plate 222 can be arbitrarily set within the range of 150-160 mm.

In one example, the length A of the connection plate 222 is 145mm, and the width B is 150 mm; in another example, the web 222 has a length A of 150mm and a width B of 160 mm; in yet another example, the web 222 has a length A of 147mm and a width B of 155 mm.

In some embodiments, the plurality of connecting posts 224 enclose a rectangular parallelepiped space, and the plurality of turns of the coil 24 are uniformly spaced along the axial direction of the connecting posts 224. It can be understood that, since the purifying housing 10 is in a square cylinder shape and the cross section of the connecting plate 222 is in a rectangular shape, the connecting column 224 encloses a rectangular space which can be adapted to the purifying housing 10 and the connecting plate 222, so that the air purifying module 100 is more compact, which is beneficial to the miniaturization of the air purifying module 100. In addition, the multi-turn coils 24 are uniformly distributed at intervals along the axial direction of the connecting column 224, which is beneficial to the beauty and regularity of the product.

Referring to fig. 14, in some embodiments, an operating voltage is applied between any two adjacent turns of the coil 24, and a distance C between two adjacent turns of the coil is 10-15 mm. That is, the distance C between two adjacent turns of the coil may take any value between 10 and 15 mm.

In one example, the spacing C between two adjacent turns is 10 mm; in another example, the spacing C between two adjacent turns is 15 mm; in yet another example, the spacing C between two adjacent turns is 12.5 mm.

In one embodiment, the coils 24 to which a low potential is applied are alternately spaced from the coils 24 to which a high potential is applied in the arrangement direction of the multi-turn coils 24. Wherein the low potential is 0V, and the high potential is 3000-3500V. For example, in the direction in which the multi-turn coil 24 is arranged, the first turn coil 24 has a low potential (e.g., 0V), the second turn coil 24 has a high potential (e.g., 3000V), and the third turn coil 24 has a low potential … …, which are arranged in this order.

Referring to fig. 15, in another embodiment, the first turn coil 24 has a low potential (e.g., 0V), the second turn coil 24 has a low potential (e.g., 0V), the third turn coil 24 has a high potential (e.g., 3000V), the fourth turn coil 24 has a high potential (e.g., 3000V), the fifth turn coil 24 has a low potential (e.g., 0V), and the sixth turn coil 24 has a low potential (e.g., 0V) … ….

Note that the above phrases "first", "second", "third", and the like represent the relative positional relationship between the coils 24 to which the electric potentials are applied, not the sequence of the coils among all the coils 24. For example, in one example, the coil 24 has 18 turns, the first turn of the coil 24 has a low potential (e.g., 0V), the second turn of the coil 24 has a high potential (e.g., 3000V), and the third turn of the coil 24 has a low potential (e.g., 0V). The first turn of the coil 24 in this example is relative to the second and third turns of the coil 24, and may be the first turn of an 18 turn coil, the second turn of an 18 turn coil, or the third turn of an 18 turn coil. In addition, the terms "first", "second", "third", and the like do not denote that the coils 24 to which electric potential is applied are adjacent, and the coils 24 to which electric potential is not applied may be spaced therebetween. Further, as shown in fig. 16, the application of the electric potential to the multi-turn coil 24 may also be irregular.

In some embodiments, the number of turns of coil 24 is 15-20 turns. That is, the number of turns of the coil 24 may take any value between 15 and 20 turns. In one example, the number of turns of the coil 24 is 15; in another example, the coil 24 has 20 turns; in yet another example, the number of turns of the coil 24 is 17 turns.

In some embodiments, the operating voltage is 3000-. As mentioned above, the oxygen can form ozone under the condition of discharging, and the efficiency of generating ozone can be higher when the working voltage is 3000-3500V. In one example, the operating voltage is 3000V; in another example, the operating voltage is 3500V; in yet another example, the operating voltage is 3200V.

Referring to fig. 17 and 18, in some embodiments, the activated carbon module 802 is cylindrical, the thickness D of the activated carbon module 802 is 38-45mm, and the diameter E is 145-150 mm; and/or the cross-sectional area S of each filtering hole 8022 is 20-30mm²The center-to-center distance F between two adjacent filtering holes 8022 is 5-8 mm.

Please note that "the thickness D of the activated carbon module 802 is 38-45mm, and the diameter E is 145-150 mm; and/or the cross-sectional area S of each filtering hole 8022 is 20-30mm²The center-to-center distance F between two adjacent filtering holes 8022 is 5-8 mm. "includes three cases:

in the first case, the thickness D of the activated carbon module 802 is 38-45mm, and the diameter E is 145-150 mm;

in the second case, the cross-sectional area S of each filtering hole 8022 is 20 to 30mm²The center distance F between two adjacent filtering holes 8022 is 5-8 mm;

in the third case, the thickness D of the activated carbon module 802 is 38-45mm, the diameter E is 145-150mm, and the cross-sectional area S of each filter hole 8022 is 20-30mm²The center-to-center distance F between two adjacent filtering holes 8022 is 5-8 mm.

In one example, the activated carbon module 802 has a thickness D of 38mm and a diameter E of 145 mm; in another example, the activated carbon module 802 has a thickness D of 45mm and a diameter E of 150 mm; in yet another example, the activated carbon module 802 has a thickness D of 41mm and a diameter E of 147 mm.

In one example, the cross-sectional area S of each filter hole 8022 is 20mm²The center distance F between two adjacent filtering holes 8022 is 5 mm; in another example, the cross-sectional area S of each filter hole 8022 is 30mm²The center distance F between two adjacent filtering holes 8022 is 8 mm; in yet another example, each filter hole 8022 has a cross-sectional area S of 25mm²The center-to-center distance F between two adjacent filtering holes 8022 is 6.5 mm.

In certain embodiments, the purification enclosure 10 includes a barrel 11, an upper cover member 14 disposed at an upper end of the barrel 11, and a lower cover member 16 disposed at a lower end of the barrel 11. The upper cover member 14 is used to connect components of the hood 1000 downstream of the air purification module 100, and the lower cover member 16 is used to connect components of the hood 1000 upstream of the air purification module 100.

Note that "upstream" and "downstream" herein are related to the flow direction of air in the hood 1000. In general, the air in the hood 1000 flows generally from the bottom to the top, and thus, the upstream components are spatially located below the air purification module 100, and the downstream components are spatially located above the air purification module 100.

Referring to fig. 2 and 3, the upper cover member 14 includes an upper cover plate 141 and an upper mounting ring 144 extending from the upper cover plate 141 in a direction away from the cylinder 11, the upper cover plate 141 is formed with an upper grill structure 1412 communicating with the purge air duct 12, the upper mounting ring 144 surrounds the upper grill structure 1412 and is formed with a purge air outlet 124, and the activated carbon purge unit 80 is disposed in the upper mounting ring 144. The lower cover member 16 includes a lower cover plate 161 and a lower mounting ring 164 extending from the lower cover plate 161 in a direction away from the cylinder 11, the lower cover plate 161 being formed with a lower grill structure 1612, and the lower mounting ring 164 surrounding the lower grill structure 1612 and being formed with the purge outlet 124.

The upper mounting ring 144 is used to connect the air purification module 100 with components downstream of the air purification module 100. The lower grid structure 1612 is used for filtering too big oil smoke granule, avoids too big oil smoke granule to get into air purification module 100 and influence air purification module 100's life.

Even more, the lower grid structure 1612 may cooperate with the fan 200 to divide some of the soot particles smaller, thereby improving the purification efficiency of the air purification module 100. The lower mounting ring 164 is used to connect the air purification module 100 with components upstream of the air purification module 100.

Specifically, the upper cover member 14 is used to connect parts such as an exhaust pipe of the hood 1000, and the lower cover member 16 is used to connect the air purification module 100 and the body of the hood 1000.

Further, the activated carbon purification unit 80 includes a fixing ring 804, the activated carbon module 802 is fixed in the fixing ring 804, and the activated carbon purification unit 80 is fixed in the upper mounting ring 144 by the fixing ring 804. In this way, the activated carbon purification unit 80 is fixed.

In some embodiments, the air purification module 100 includes a high voltage transformer 50, and the high voltage transformer 50 is used to convert an effective value 220V of a standard voltage most commonly used by residents into a high voltage, thereby being used by the air purification module 100. For example, the high voltage transformer 50 may achieve the purpose of boosting by changing the turns ratio of the inductor.

In some embodiments, the air purification module 100 includes a power supply device 500 secured to the outside of the purification enclosure 10, the power supply device 500 being used to provide a voltage to the multi-turn coil 24.

In some embodiments, the power supply device 500 includes a switch 60 and a switch cover 70, and the button 62 of the switch 60 is exposed from the switch cover 70. The user can control the turning on and off of the air purification module 100 through the button 62 of the switch 60. The switch box cover 70 encapsulates most of the switch 60, and only the button 62 is exposed, which is beneficial to the neatness and beauty of the air purification module 100.

In some embodiments, the switch 60 may adjust the power of the air purification module 100, and a user may select a lower power when the oil smoke is less and a higher power when the oil smoke is more, so that the user may conveniently control the air purification module 100.

In some embodiments, the main switch of the range hood 1000 and the switch 60 of the air purification module 100 are provided together, so that the user can use the range hood conveniently.

In some embodiments, the power of the range hood 1000 can be adjusted by the main switch of the range hood 1000, and a user can select a lower power when the oil smoke is less and a higher power when the oil smoke is more, so that the user can conveniently control the range hood 1000.

In some embodiments, the power device 500 includes an electrical outlet 300, the electrical outlet 300 being used to connect the range hood 1000 into a home circuit, thereby energizing the range hood 1000.

Generally, the fan 200 is disposed in an airflow channel 401 of a housing 400 of the range hood 1000, and is closer to a cooking bench than the air purification module 100, the range hood 1000 is provided with an air inlet 402, the range hood 1000 is installed above the cooking bench, and when a user cooks on the cooking bench, the range hood 1000 can be opened to operate the fan 200. During operation, the fan 200 may suck oil smoke generated during cooking into the airflow channel 401 of the range hood 1000 through the air inlet 402, and then discharge the oil smoke to the purifying air duct 12 of the air purifying module 100, so that the air purifying module 100 purifies the oil smoke and discharges the purified air. In addition, the fan 200 may also divide the soot particles smaller so that the soot particles are more easily processed within the air purification module 100.

To improve the life of the range hood 1000, a screen may be disposed at the intake vent 402. The filter screen can filter the oil smoke with larger particles to prevent the oil smoke with larger particles from directly entering the range hood 1000 to influence the normal work of the range hood 1000.

In some embodiments, the number of the activated carbon purification units 80 is two, two activated carbon purification units 80 are disposed in the purification air duct 12, and the ozone generating device 20 is disposed between the two activated carbon purification units 80, wherein one activated carbon purification unit 80 is disposed near the purification air inlet 122 and the other activated carbon purification unit 80 is disposed near the purification air outlet 124.

One of the activated carbon modules 802 is disposed in the upper mounting ring 144 and the other activated carbon module 802 is disposed in the lower mounting ring 164.

Further, each of the activated carbon purification units 80 includes a fixing ring 804, the activated carbon modules 802 are fixed in the fixing ring 804, one of the activated carbon purification units 80 is fixed in the upper mounting ring 144 by the fixing ring 804, and one of the activated carbon purification units 80 is fixed in the lower mounting ring 164 by the fixing ring 804.

In summary, the present invention provides an air purification module 100, which includes a purification housing 10 formed with a purification air duct 12, and an ozone generation device 20 and two activated carbon purification units 80 both disposed in the purification air duct 12, wherein the purification air duct 12 is formed with a purification air inlet 122 and a purification air outlet 124, the ozone generation device 20 is disposed between the two activated carbon purification units 80, one of the activated carbon purification units 80 is disposed near the purification air inlet 122, and the other activated carbon purification unit 80 is disposed near the purification air outlet 124.

The air purification module 100 of the embodiment of the invention has the advantages that the two activated carbon purification units 80 are arranged, so that the air purification module 100 has a simple structure, and the effects of removing peculiar smell and purifying air are better. It will be appreciated that the activated carbon purification unit 80 disposed adjacent to the purified air inlet 122 pre-purifies the air as it enters the air purification module 100, which facilitates mitigating subsequent purification pressure of the air purification module 100. The activated carbon purification unit 80 disposed near the purification air outlet 124 continues to purify the air when the air is discharged from the air purification module 100, facilitating further purification of the air discharged from the air purification module 100.

Referring to fig. 19, the present invention further provides a control method of the range hood. The range hood 1000 may be the range hood 1000 described above, and a method of controlling the range hood according to the present invention will be described in detail below by taking the range hood 1000 described above as an example.

Specifically, the range hood 1000 is formed with an air flow channel 401, the air flow channel 401 includes an air inlet 402 and an air outlet 403, the range hood 1000 includes a fan 200 and an ozone generating device 20 both disposed in the air flow channel 401, the ozone generating device 20 includes a frame 22 and a plurality of turns of coils 24 wound on the frame 22, the plurality of turns of coils 24 are arranged at intervals, wherein at least two turns of coils 24 are used for ionizing air to form ozone after applying a working voltage, the fan 200 is used for establishing an air flow from the air inlet 402 to the air outlet 403, and the control method includes the steps of:

s12: acquiring the current air volume in the airflow channel 401;

s14: the ozone generating device 20 is controlled to operate at the corresponding power according to the current air volume, and the current air volume in the airflow channel 401 and the corresponding power of the ozone generating device 20 are in a positive correlation relationship.

The hood 1000 includes a wind pressure sensor 600 and a controller 700 provided in the air flow passage 401. The wind pressure sensor 600 is used to detect wind pressure in the airflow passage 401. The controller 700 is configured to obtain a current air volume in the airflow channel 401 according to an output signal of the wind pressure sensor 600, and is configured to control the ozone generating device 20 to operate at a corresponding power according to the current air volume in the airflow channel 401, where the current air volume in the airflow channel 401 and the corresponding power of the ozone generating device 20 are in a positive correlation.

According to the control method of the range hood and the range hood 1000, the ozone generating device 20 can be simply controlled to operate at the corresponding power according to the current air quantity in the air flow channel 401, the energy is saved, the purification effect is good, and the automation degree of air purification of the range hood 1000 is improved.

It should be noted that the "airflow passage" herein refers to a passage from the air inlet 402 to the air outlet 403, through which airflow passes, and the blower 200 is used for sucking gas from the air inlet 402 and discharging the gas from the air outlet 403 after passing through the ozone generating device 20 and the activated carbon purifying unit 80 during operation. It is apparent that the air flow path 401 includes the purge air duct 12. In addition, in one example, the wind pressure sensor 600 is disposed in the purge air duct 12.

The positive correlation between the current air volume in the airflow channel 401 and the corresponding power of the ozone generating device 20 means that: the greater the current air volume in the air flow channel 401, the greater the corresponding power of the ozone generating device 20.

Table 6 shows the relationship between the wind pressure in the airflow passage 401, the amount of wind in the airflow passage 401, the power of the ozone generating device 20, and the purifying effect. Obviously, the air volume in the air flow channel 401 has a positive correlation with the power of the ozone generating device 20. By using the data of the air volume in the airflow channel 401 and the ozone generating device 20 in table 6, a relation curve can be fitted, so that the power of the ozone generating device 20 can be more accurately controlled according to the current air volume in the airflow channel 401.

In addition, from table 6, the relationship between the purifying effect and the air volume in the air flow path 401 and the power of the ozone generating device 20 can be obtained, thereby realizing the prediction of the purifying effect from the air volume in the air flow path 401 or the power of the ozone generating device 20. Also, a relationship curve can be fitted according to the data in table 6, so that the prediction of the purification effect is more accurate.

Also, in the event that the amount of air in the airflow path 401 is low, the range hood 1000 still maintains a high capacity to purify air.

TABLE 6

In certain embodiments, step S12 includes:

acquiring the current rotating speed of the fan 200;

and calculating to obtain the current air volume according to the current rotating speed.

In some embodiments, the controller 700 is configured to obtain a current speed of the wind turbine 200; and calculating the current air volume in the airflow channel 401 according to the current rotating speed of the fan 200.

In this way, the current air volume in the airflow channel 401 is obtained. It can be understood that, since the fan 200 realizes the air flow by the rotation of the impeller, the current rotation speed of the fan 200 has a corresponding relationship with the current air volume in the airflow channel 401. Therefore, once the current rotating speed of the fan 200 is obtained, the current air volume in the airflow channel 401 can be obtained, and the method is simple, convenient and easy to implement.

Of course, the corresponding relationship between the rotation speed of the blower 200 and the air volume in the airflow channel 401 may be calculated in advance, and the result may be stored. In this way, it is not necessary to perform calculation each time after acquiring the current rotation speed of the fan 200, and only after acquiring the current rotation speed of the fan 200, the stored result needs to be queried.

In some embodiments, the range hood 1000 includes a wind pressure sensor 600 disposed in the air flow passage 401, the wind pressure sensor 600 is used for detecting wind pressure in the air flow passage 401, and the step S12 includes: the current air volume in the airflow channel 401 is calculated according to the output signal of the wind pressure sensor 600.

In some embodiments, the controller 700 is configured to calculate the current air volume in the airflow channel 401 according to the output signal of the wind pressure sensor 600.

In this way, the current air volume in the airflow channel 401 is obtained. It can be understood that, as shown in table 6, the wind pressure in the airflow channel 401 has a corresponding relationship with the current wind volume in the airflow channel 401. Therefore, the current air volume in the airflow channel 401 can be calculated through the output signal of the wind pressure sensor 600.

Of course, the corresponding relationship between the output signal of the wind pressure sensor 600 and the air volume in the airflow channel 401 may be calculated in advance, and the result may be stored. Therefore, the current air volume in the airflow channel 401 does not need to be calculated according to the output signal of the wind pressure sensor 600 every time, and only after the output signal of the wind pressure sensor 600 is obtained, the stored result is inquired.

In one example, the output signal of the wind pressure sensor 600 is 449.17Pa, and the corresponding wind volume in the airflow channel 401 is 140.45m 3/h; in another example, the output signal of the wind pressure sensor 600 is 437.94Pa, and the corresponding wind volume in the airflow channel 401 is 210.48m 3/h; in another example, the output signal of the wind pressure sensor 600 is 410.7Pa, and the corresponding wind volume in the airflow channel 401 is 279.96m 3/h.

Referring to fig. 20, in some embodiments, before step S12, the control method further includes the steps of:

s14: judging whether wind pressure exists in the airflow channel 401; and

s16: when wind pressure exists in the airflow channel 401, the ozone generating device 20 is turned on.

In some embodiments, the controller 700 is configured to determine whether there is wind pressure in the airflow channel 401; and turning on the ozone generating device 20 when wind pressure exists in the airflow passage 401.

Thus, the automatic opening of the ozone generating device 20 can be simply realized to enable the ozone generated by the ozone generating device 20 to purify the air, the purifying effect is good, and the automation degree of the purified air of the range hood 1000 is improved.

It is to be noted that "on" in step S12 means that an operating voltage is applied to at least two turns of the multi-turn coil 24, so that the two turns of the coil 24 ionize the air to form ozone after the operating voltage is applied.

In some embodiments, the range hood 1000 includes a wind pressure sensor 600 disposed in the air flow passage 401, the wind pressure sensor 600 is used for detecting wind pressure in the air flow passage 401, and the step S14 includes: and judging whether the air pressure exists in the air flow channel 401 according to the output signal of the air pressure sensor 600.

In some embodiments, the controller 700 is configured to determine whether there is wind pressure in the airflow channel 401 according to the output signal of the wind pressure sensor 600.

Therefore, the judgment of whether the air pressure exists in the airflow channel 401 is realized. Specifically, the standard static pressure may be obtained and stored by the wind pressure sensor 600, and when the output signal of the wind pressure sensor 600 is used to determine whether the wind pressure exists in the airflow channel 401, the output signal of the wind pressure sensor 600 at this time is compared with the output signal of the wind pressure sensor 600 used to obtain the standard static pressure, so as to determine whether the wind pressure exists in the airflow channel 401.

In the description herein, references to the description of the terms "one embodiment," "certain embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. The utility model provides a control method of smoke ventilator, its characterized in that, smoke ventilator is formed with airflow channel, airflow channel includes air intake and air exit, smoke ventilator is including all setting up in fan and ozone generating device in the airflow channel, ozone generating device includes the frame and winds and establish multiturn coil on the frame, multiturn coil interval is arranged, wherein, two at least circles the coil is used for ionizing the air and forming ozone after applying operating voltage, the fan is used for establishing from the air intake to the air current between the air exit, control method includes the step:

acquiring the current air volume in the airflow channel; and

2. The control method of the hood according to claim 1, wherein the step of obtaining the current amount of air in the airflow passage comprises:

acquiring the current rotating speed of the fan; and

and calculating the current air volume according to the current rotating speed.

3. The control method of the hood according to claim 1, wherein the hood includes a wind pressure sensor provided in the airflow passage, the wind pressure sensor detecting wind pressure in the airflow passage, and the step of obtaining a current amount of wind in the airflow passage includes:

and calculating to obtain the current air volume according to the output signal of the wind pressure sensor.

4. The control method of the hood according to claim 1, further comprising, before the step of obtaining the current air volume in the airflow passage, the steps of:

judging whether wind pressure exists in the airflow channel or not; and

5. The control method of the hood according to claim 4, wherein the hood includes a wind pressure sensor provided in the airflow path, the wind pressure sensor detecting wind pressure in the airflow path, and the step of determining whether wind pressure exists in the airflow path includes:

and judging whether the air pressure exists in the airflow channel according to the output signal of the air pressure sensor.

6. The utility model provides a smoke ventilator, a serial communication port, smoke ventilator is formed with airflow channel, airflow channel includes air intake and air exit, smoke ventilator including all set up in fan and ozone generating device in the airflow channel, ozone generating device includes the frame and winds and establishes multiturn coil on the frame, multiturn coil interval is arranged, wherein, two at least circles the coil is used for ionizing the air behind the applied operating voltage and forms ozone, the fan is used for establishing the follow the air intake extremely air between the air exit, smoke ventilator still includes:

7. The range hood of claim 6, wherein the controller is to:

acquiring the current rotating speed of the fan; and

and calculating the current air volume according to the current rotating speed.

8. The range hood of claim 6, wherein the controller is configured to calculate the current air volume based on an output signal of the wind pressure sensor.

9. The range hood of claim 6, wherein the controller is to:

judging whether wind pressure exists in the airflow channel or not; and

10. The range hood of claim 9, wherein the controller is configured to determine whether a wind pressure exists in the airflow channel according to an output signal of the wind pressure sensor.