Range hood with disinfection function

Abstract

The utility model discloses a range hood with a disinfection function, which comprises a range hood main body, an air collecting cavity, a disinfection device, a disinfection device and a control device, and is characterized in that the range hood main body is provided with an air collecting cavity; the fan is arranged in the air collecting cavity; the ozone generating unit is arranged in the range hood main body and has a state of communicating with the air collecting cavity and a state of isolating from the air collecting cavity; wherein the range hood has an operation mode and a disinfection mode, and in the operation mode, the air collection cavity is in an open state, the fan operates, and the ozone generation unit is isolated from the air collection cavity; in the disinfection mode, the air collection cavity is in a closed state, the fan operates at the lowest gear, and the ozone generation unit is communicated with the air collection cavity; compared with the prior art, the range hood with the disinfection function has the advantages that ozone is fully diffused in the closed air collecting cavity, bacteria, viruses and other microorganisms are killed by utilizing the oxidation property of ozone gas, and the problem of disinfection and sterilization dead angles existing in ultraviolet disinfection and sterilization is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of range hoods, and particularly to a range hood with a disinfection function. Background Art

[0002] After a range hood is used for a long time, a lot of oil-water mixtures will accumulate inside. Existing range hoods can clean the oil-water mixtures inside the range hood, but cannot clean them completely. The long-term accumulated oil-water mixtures will breed a large number of harmful bacteria, endangering human health. Existing range hoods use ultraviolet rays for disinfection and sterilization, but there are the following problems with ultraviolet disinfection and sterilization: 1. It is easy to have disinfection dead corners in ultraviolet disinfection and sterilization, resulting in incomplete disinfection; 2. The ultraviolet lamp tubes installed inside the range hood are easily polluted and adsorbed by lampblack, affecting the light-emitting effect of the ultraviolet lamp tubes, thereby affecting the disinfection and sterilization effect; 3. When using ultraviolet disinfection, the power of the ultraviolet lamp tubes is relatively high, and the ultraviolet irradiation for sterilization requires a long action time, resulting in relatively high energy consumption during ultraviolet disinfection and sterilization; 4. The humidity inside the range hood is generally relatively high, and the high-humidity environment will directly reduce the effect of ultraviolet disinfection and sterilization. Summary of the Utility Model

[0003] The purpose of the utility model is to provide a range hood with a disinfection function, which is used to solve the above technical problems.

[0004] A range hood with a disinfection function includes:

[0005] A range hood main body, which has an air collecting cavity, and the air collecting cavity has an open state and a closed state;

[0006] A fan, which is arranged in the air collecting cavity;

[0007] An ozone generating unit, which is arranged in the range hood main body and has a state of being communicated with the air collecting cavity and a state of being isolated from the air collecting cavity;

[0008] Among them, the range hood has an operation mode and a disinfection mode. In the operation mode, the air collecting cavity is in an open state, the fan operates, and the ozone generating unit is isolated from the air collecting cavity; in the disinfection mode, the air collecting cavity is in a closed state, the fan operates at the lowest gear, and the ozone generating unit is communicated with the air collecting cavity.

[0009] According to an embodiment of the utility model, the user side of the range hood main body has a front panel and a movable panel. An air inlet communicating with the air collecting cavity is provided on the front panel. The movable panel can move relative to the front panel to open or close the air inlet; an air outlet is provided at the top of the range hood main body, and an electric check valve is arranged at the air outlet, and the electric check valve is used to open or close the air outlet.

[0010] According to an embodiment of the present utility model, the ozone generation unit includes an ozone generator, a switching valve assembly, and a housing. A communication hole communicating with the air collection cavity is provided at the top of the main body of the range hood. The switching valve assembly is used to open or close the communication hole. The housing is provided at the top of the main body of the range hood and covers the ozone generator and the switching valve assembly therein. When the switching valve assembly opens the communication hole, the interior of the housing communicates with the air collection cavity.

[0011] According to an embodiment of the present utility model, when the switching valve assembly opens the communication hole, the projection of the emission end of the ozone generator falls within the communication hole, and the extension line of the extending direction of the emission end of the ozone generator passes through the communication hole.

[0012] According to an embodiment of the present utility model, the switching valve assembly includes a driving motor, a driving plate, and a switching valve plate. The driving plate has a first connection position connected to the output end of the driving motor and a second connection position connected to the switching valve plate. The driving motor drives the driving plate to rotate, so that the driving plate drives the switching valve plate to rotate and open the communication hole.

[0013] According to an embodiment of the present utility model, the length of the line connecting the midpoint of the edge of one end of the switching valve plate close to the second connection position and the midpoint of the first connection position is L1, and the length of the line connecting the midpoint of the edge of the other end of the switching valve plate far from the second connection position and the midpoint of the first connection position is L2, and L1 < L2. When the communication hole is in the closed state, the switching valve plate is in the lowest position and seals the communication hole. When the driving motor drives the driving plate to rotate, one end of the switching valve plate close to the second connection position rotates with a radius of L1, and the other end of the switching valve plate far from the second connection position rotates with a radius of L2.

[0014] According to an embodiment of the present utility model, the ozone generator is provided on the upper surface of the switching valve plate, and the emission end of the ozone generator extends to the edge of one end of the switching valve plate close to the second connection position.

[0015] According to an embodiment of the present utility model, it further includes a control module. The control module includes a main control unit, an ozone sensor detection unit, an air outlet detection unit, and an air inlet detection unit. The main control unit controls the states of the air collection cavity, the fan, and the ozone generation unit.

[0016] According to an embodiment of the present utility model, the control module further includes a smoke sensor, a timing module, and an air volume detection module. The smoke sensor detects the oil fume concentration during cooking. The timing module records the cooking time T of each user cooking. The air volume detection module detects the exhaust air volume Q of the range hood. The oil fume generation amount within the cumulative time is calculated based on the oil fume concentration, the cumulative cooking time, and the exhaust air volume. When the oil fume generation amount reaches the threshold, the main control unit controls the states of the air collection cavity, the fan, and the ozone generation unit to disinfect the air collection cavity.

[0017] According to an embodiment of the present utility model, the control module further includes a timing module and a TVOC sensor. The timing module records the cumulative working time T1 of the range hood and the cumulative standby time T2 of the range hood. The TVOC sensor detects the real-time TVOC concentration value C when the range hood is in the shutdown state. When T1≥T1max, or E≥Emax, or 0<T1<T1max and T2≥T2max, the main control unit controls the states of the air collecting cavity, the fan, and the ozone generating unit to disinfect the air collecting cavity.

[0018] Compared with the prior art, the range hood with a disinfection function of the present utility model has the following advantages:

[0019] 1. When disinfecting the air collecting cavity of the range hood, the range hood with a disinfection function of the present utility model closes the air collecting cavity to form a relatively closed space. The ozone generating unit is communicated with the air collecting cavity and delivers ozone gas into the air collecting cavity. The fan runs at a low speed to disturb the air, so that the ozone is evenly distributed in the air collecting cavity, and the ozone concentration in the air collecting cavity is maintained within a certain range for a certain period of time, so as to achieve the effect of ozone disinfection and sterilization.

[0020] 2. The range hood with a disinfection function of the present utility model generates a certain amount of ozone gas in the closed air collecting cavity, allows the ozone to fully diffuse in the air collecting cavity, and uses the oxidation property of the ozone gas to kill bacteria, viruses and other microorganisms, and quickly decomposes organic or inorganic substances with odors and other odors to achieve the deodorization effect. There is no peculiar smell, no dead angle and comprehensive disinfection, overcoming the problem of dead angles in ultraviolet disinfection and sterilization.

[0021] 3. After the ozone in the air collecting cavity of the range hood with a disinfection function of the present utility model disinfects the air collecting cavity, the ozone decomposes into oxygen by itself after disinfection, without harmful residues and no secondary pollution. Description of the Drawings

[0022] Figure 1 is a schematic structural diagram of the range hood with a disinfection function of the present utility model;

[0023] Figure 2 is a sectional view of the range hood with a disinfection function of the present utility model;

[0024] Figure 3 is a partial enlarged view when the communication hole on the range hood body of the range hood with a disinfection function of the present utility model is in the closed state (the housing of the ozone generating unit is hidden);

[0025] Figure 4 is Figure 3 an enlarged view of A in

[0026] Figure 5Partial enlarged view when the communication hole on the main body of the range hood with a disinfection function of the present utility model is in an open state (the housing of the ozone generation unit is hidden);

[0027] Figure 6 is Figure 5 Enlarged view of B in

[0028] In the figure: 1. Range hood main body, 11. Front panel, 111. Air inlet, 12. Movable panel, 13. Electric check valve, 2. Fan, 3. Ozone generation unit, 31. Ozone generator, 32. Switch valve assembly, 321. Driving motor, 322. Driving plate, 323. Switch valve plate, 33. Housing.

[0029] The realization and advantages of the present utility model will be further described with reference to the accompanying drawings in combination with embodiments. Specific embodiments

[0030] The following will disclose multiple embodiments of the present utility model in the form of diagrams. For the sake of clarity, many practical details will be described together in the following narrative. However, it should be understood that these practical details are not used to limit the present utility model. That is to say, in some embodiments of the present utility model, these practical details are unnecessary. In addition, for the purpose of simplifying the diagrams, some well-known and commonly used structures and components will be shown in a simple schematic manner in the diagrams.

[0031] It should be noted that all directional indications (such as up, down, left, right, front, back...) in the embodiments of the present utility model are only used to explain the relative positional relationship and movement conditions between components in a specific posture (as shown in the accompanying drawings). If this specific posture changes, then the directional indications will also change accordingly.

[0032] In addition, in the present utility model, descriptions such as "first", "second", etc. are only for descriptive purposes, and do not particularly refer to the order or sequence. Nor are they used to limit the present utility model. They are merely used to distinguish components or operations described with the same technical terms, and cannot be understood as indicating or implying their relative importance or implicitly indicating the quantity of the indicated technical features. Thus, features defined with "first", "second" may explicitly or implicitly include at least one of such features. In addition, the technical solutions between various embodiments can be combined with each other, but it must be based on the fact that those of ordinary skill in the art can implement them. When the combination of technical solutions results in contradictions or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by the present utility model.

[0033] To further understand the content, features and effects of the present utility model, the following embodiments are exemplified and described in detail with the accompanying drawings as follows:

[0034] Please refer to Figures 1 to 6 , the present utility model discloses a range hood with a disinfection function. The range hood with a disinfection function disclosed by the present utility model is used for a range hood, and includes a range hood main body 1, a blower 2 and an ozone generating unit 3. The range hood main body 1 has an air collecting cavity, and the air collecting cavity has an open state and a closed state; the blower 2 is arranged in the air collecting cavity; the ozone generating unit 3 is arranged in the range hood main body 1, and it has a state of communicating with the air collecting cavity and a state of being isolated from the air collecting cavity; wherein, the range hood has an operation mode and a disinfection mode. In the operation mode, the air collecting cavity is in an open state, the blower 2 operates, and the ozone generating unit 3 is isolated from the air collecting cavity; in the disinfection mode, the air collecting cavity is in a closed state, the blower 2 operates at the lowest gear, and the ozone generating unit 3 communicates with the air collecting cavity. For the range hood of the present utility model, when the range hood is in the operation mode, the air collecting cavity of the range hood main body 1 is in an open state, the blower 2 operates, and the cooking fumes generated are introduced into the air collecting cavity and discharged by the exhaust blower. During the process of the fumes entering the air collecting cavity, since the ozone generating unit 3 is in a state of being isolated from the air collecting cavity, the fumes in the air collecting cavity will not contaminate the ozone generating unit 3 and will not affect the ozone release amount of the ozone generating unit 3. After the range hood operates for a period of time, the fumes accumulate in the air collecting cavity, and the range hood can enter the disinfection mode to disinfect the interior of the air collecting cavity. When the range hood enters the disinfection mode, the air collecting cavity of the range hood main body 1 is closed, so that the air collecting cavity forms a relatively enclosed space. The ozone generating unit 3 communicates with the air collecting cavity and conveys ozone gas into the air collecting cavity. By operating the blower 2 at a low speed to disturb the air, the ozone is evenly distributed in the air collecting cavity. The ozone generating unit 3 maintains the ozone concentration in the air collecting cavity within a certain range and for a certain period of time, so as to achieve the effect of ozone disinfection and sterilization.

[0035] For the range hood with a disinfection function of the present utility model, a certain amount of ozone gas is generated by the ozone generating unit 3 in the closed air collecting cavity, and the ozone is fully diffused in the air collecting cavity. The oxidation property of the ozone gas is used to kill bacteria, viruses and other microorganisms, and quickly decompose organic or inorganic substances with odors and other odors, achieving a deodorization effect. There is no peculiar smell, no dead angle and comprehensive disinfection, overcoming the problem of disinfection dead angles existing in ultraviolet disinfection and sterilization. And after the ozone in the air collecting cavity disinfects the air collecting cavity, the ozone decomposes into oxygen by itself after disinfection, without harmful residues and without secondary pollution.

[0036] Please refer to Figure 2, for the range hood with a disinfection function of the present utility model, the user side of the range hood body 1 is provided with a front panel 11 and a movable panel 12. An air inlet 111 communicating with the air collecting cavity is provided on the front panel 11. The movable panel 12 can move relative to the front panel 11 to open or close the air inlet 111. An air outlet is provided at the top of the range hood body 1, and an electric check valve 13 is arranged at the air outlet. The electric check valve 13 is used to open or close the air outlet. When the range hood is in the operating state, the movable panel 12 moves relative to the front panel 11 and opens the air inlet 111, the electric check valve 13 opens the air outlet, the fan 2 operates, and the cooking fumes are introduced into the air collecting cavity through the air inlet 111 and then discharged from the air outlet. When it is necessary to disinfect the air collecting cavity, the movable panel 12 moves relative to the front panel 11 and closes the air inlet 111, the electric check valve 13 closes the air outlet, the air collecting cavity is in a closed state, the ozone generating unit 3 is in a state of communicating with the air collecting cavity and starts to deliver ozone into the air collecting cavity, the fan 2 operates at a low speed, the fan 2 operates at a low rotational speed and disturbs the air, so that the ozone is evenly distributed in the air collecting cavity. The ozone generating unit 3 maintains the ozone concentration in the air collecting cavity within a certain range and for a certain period of time, so as to achieve the effect of ozone disinfection and sterilization.

[0037] In some embodiments of the range hood with a disinfection function, the moving mode of the movable panel 12 relative to the front panel 11 can be up and down sliding. When the range hood enters the operating mode, the movable panel 12 slides down along the front panel 11 and opens the air inlet 111. When the range hood enters the disinfection mode, the movable panel 12 slides up along the front panel 11 and closes the air inlet 111. When the range hood is in the normal shutdown state, the movable panel 12 is also in a state of closing the air inlet 111, which can prevent the backflow of cooking fumes.

[0038] In other embodiments of the range hood with a disinfection function, the movable panel 11 can rotate relative to the front panel 12. When the range hood is in the normal shutdown state, the movable panel 11 and the front panel 12 are in the same plane and close the air inlet 111. When it is necessary to open the air inlet 111, the movable panel 12 rotates relative to the front panel 11, and the gap formed between the movable panel 12 and the front panel 11 forms the air inlet 111.

[0039] In Figure 2In the illustrated embodiment, the lower end of the movable panel 12 is rotatably connected to the lower end of the range hood main body 1. When it is necessary to open the air inlet 111, a force for inward rotation is applied to the movable panel 12, and the upper end of the movable panel 12 flips inward into the range hood main body 1. The movable panel 12 enters the air collecting cavity through the air inlet 111 on the front panel 11, and the air inlet 111 is opened; when it is necessary to close the air inlet 111, a force for outward rotation is applied to the movable panel 12, and the upper end of the movable panel 12 flips outward out of the range hood main body 1. The movable panel 12 moves out of the air collecting cavity through the air inlet 111 on the front panel 11. Finally, the movable panel 12 and the front panel 11 are in the same plane, and the air inlet 111 is closed.

[0040] For the range hood with a disinfection function of the present utility model, the technology of the electric check valve 13 for opening and closing the air outlet adopts the prior art. To make the text concise, it will not be repeated here.

[0041] Please refer to Figures 1 to 6 , for the range hood with a disinfection function of the present utility model, the ozone generating unit 3 includes an ozone generator 31, a switching valve assembly 32 and a housing 33. A communication hole communicating with the air collecting cavity is provided at the top of the range hood main body 1. The switching valve assembly 32 is used to open or close the communication hole. The housing 33 is provided at the top of the range hood main body 1 and covers the ozone generator 31 and the switching valve assembly 32 therein. When the switching valve assembly 32 opens the communication hole, the inside of the housing 33 communicates with the air collecting cavity. When the range hood is in the operation mode, the switching valve assembly 32 closes the communication hole at the top of the range hood main body 1, so that the inside of the housing 33 is isolated from the air collecting cavity. When the fan 2 operates and the oil fume passes through the air collecting cavity, the oil fume cannot enter the housing 33 through the communication hole, and the ozone generator 31 will not be polluted by the oil fume; when the range hood enters the disinfection mode, the switching valve assembly 32 opens the communication hole at the top of the range hood main body 1, the inside of the housing 33 communicates with the smoke collecting cavity, the ozone generator 31 starts to generate ozone, and the ozone enters the air collecting cavity through the communication hole and is evenly distributed in the air collecting cavity under the action of the fan 2. After the ozone in the air collecting cavity reaches a certain concentration and is maintained for a period of time, the ozone generator 31 stops generating ozone, and the switching valve assembly 32 closes the communication hole again, and the range hood ends the disinfection mode.

[0042] Please refer to Figure 5 and Figure 6, for the range hood with a disinfection function of the present utility model, when the switching valve assembly 32 opens the communication hole, the projection of the emission end of the ozone generator 31 falls within the communication hole, and the extension line of the extending direction of the emission end of the ozone generator 31 passes through the communication hole. Since the density of ozone is greater than that of air, when ozone is emitted from the emission end of the ozone generator 31, the ozone begins to sink. By making the projection of the emission end of the ozone generator 31 fall within the communication hole and making the extension line of the extending direction of the emission end of the ozone generator 31 pass through the communication hole, when ozone is emitted from the emission end of the ozone generator 31, more ozone can directly enter the air collecting cavity through the communication hole, and the ozone concentration in the air collecting cavity can quickly reach the required concentration.

[0043] Please refer to Figures 3 to 6 , for the range hood with a disinfection function of the present utility model, the switching valve assembly 32 includes a driving motor 321, a driving plate 322 and a switching valve plate 323. The driving plate 322 has a first connection position connected to the output end of the driving motor 321 and a second connection position connected to the switching valve plate 323. The driving motor 321 drives the driving plate 322 to rotate, so that the driving plate 322 drives the switching valve plate 323 to rotate and open the communication hole. When the range hood enters the disinfection mode, the air collecting cavity is closed, the driving motor 321 is started, the output shaft of the driving motor 321 drives the driving plate 322 to rotate, the driving plate 322 rotates and makes the switching valve plate 323 rotate, and the switching valve plate 323 opens the communication hole, and the ozone generated by the ozone generator 31 can enter the air collecting cavity through the communication hole.

[0044] In some embodiments, when the switching valve plate 323 is located below the top of the range hood main body 1 and within the air collecting cavity, when the range hood is in the operating mode, both ends of the switching valve plate 323 are at the highest position. At this time, the switching valve plate 323 is closely attached to the top of the range hood main body 1 and seals the communication hole; when the driving motor 321 drives the switching valve plate 323 to rotate through the driving plate 322, the switching valve plate 323 begins to rotate downward. While the switching valve plate 323 rotates, it descends relative to the top of the range hood main body 1, so that the communication hole is opened, and the ozone generated by the ozone generator 31 can enter the air collecting cavity through the communication hole.

[0045] In Figures 3 to 6 In the shown embodiment, the switching valve plate 323 is located at the top of the range hood main body 1 and within the housing 33. When the range hood is in the operating mode, both ends of the switching valve plate 323 are at the lowest position. At this time, the switching valve plate 323 is closely attached to the top of the range hood main body 1 and seals the communication hole; when the driving motor 321 drives the switching valve plate 323 to rotate through the driving plate 322, the switching valve plate 323 begins to rotate upward. While the switching valve plate 323 rotates, it rises relative to the top of the range hood main body 1, so that the communication hole is opened, and the ozone generated by the ozone generator 31 can enter the air collecting cavity through the communication hole.

[0046] For the range hood with a disinfection function of the present utility model, the length of the line connecting the midpoint of the edge of the end of the switch valve plate close to the second connection position and the midpoint of the first connection position is L1, and the length of the line connecting the midpoint of the edge of the end of the switch valve plate far from the second connection position and the midpoint of the first connection position is L2, where L1 < L2. When the communication hole is in the closed state, the switch valve plate 323 is in the lowest position and seals the communication hole. When the driving motor 321 drives the driving plate 322 to rotate, the end of the switch valve plate 323 close to the second connection position rotates with a radius of L1, and the end of the switch valve plate 323 far from the second connection position rotates with a radius of L2. In this way, when the driving motor 321 drives the switch valve plate 323 to rotate through the driving plate 322, the upward movement distance of the end of the switch valve plate 323 close to the second connection position is less than that of the end of the switch valve plate 323 far from the second connection position. While the switch valve plate 323 rotates, it changes from a horizontal setting to an inclined setting, and the end of the switch valve plate 323 close to the second connection position is located below. While opening the communication hole, the switch valve plate 323 will not interfere with the top plate of the range hood body 1.

[0047] Please refer to Figures 3 to 6 , for the range hood with a disinfection function of the present utility model, the ozone generator 31 is provided on the upper surface of the switch valve plate 323, and the emission end of the ozone generator 31 extends to the edge of the end of the switch valve plate close to the second connection position. When the driving motor 321 drives the switch valve plate 323 to rotate through the driving plate 322, the upward movement distance of the end of the switch valve plate 323 close to the second connection position is less than that of the end of the switch valve plate 323 far from the second connection position. While the switch valve plate 323 rotates, it changes from a horizontal setting to an inclined setting, and the end of the switch valve plate 323 close to the second connection position is located below. When the ozone generated by the ozone generator 31 sinks, it directly enters the air collecting cavity through the communication hole.

[0048] The range hood with a disinfection function of the present utility model further includes a control module. The control module includes a main control unit, an ozone sensor detection unit, an air outlet detection unit, and an air inlet detection unit. The main control unit controls the states of the air collection cavity, the fan 2, and the ozone generation unit 3. When the range hood enters the operation mode, the air outlet detection unit and the air inlet detection unit detect the states of the air outlet and the air inlet 111 to ensure that the movable panel 12 opens the air inlet 111, and at the same time, the electric check valve 13 opens the air outlet, so that when the fan 2 operates, the cooking fumes can enter the air collection cavity through the air inlet 111 and then be discharged from the air outlet, realizing the suction function of the range hood for fumes. When the range hood enters the disinfection mode, the air outlet detection unit and the air inlet detection unit detect the states of the air outlet and the air inlet 111 to ensure that the movable panel 12 closes the air inlet 111, and at the same time, the electric check valve 13 closes the air outlet, so that the air collection cavity is in a closed state. Then, the switch valve assembly 32 opens the communication hole at the top of the range hood main body 1 to connect the inside of the housing 33 to the air collection cavity. After that, the ozone generator 31 is started to generate ozone, and the fan 2 is started to operate at a low wind speed to disturb the air, making the ozone evenly distributed in the air collection cavity. At the same time, the ozone concentration in the air collection cavity is detected in real time through the ozone sensor detection unit, so that the ozone concentration in the air collection cavity is maintained within a certain range and for a certain period of time, thereby achieving the effect of ozone disinfection and sterilization.

[0049] For the range hood with a disinfection function of the present utility model, the control module further includes a smoke sensor, a timing module, and an air volume detection module. The smoke sensor detects the fume concentration during cooking, the timing module records the cooking time T for each cooking by the user, and the air volume detection module detects the exhaust air volume Q of the range hood. The fume generation amount during the cumulative time is calculated based on the fume concentration, the cumulative cooking time, and the exhaust air volume. When the fume generation amount reaches the threshold value, the main control unit controls the states of the air collection cavity, the fan 2, and the ozone generation unit 3 to disinfect the air collection cavity. The fume concentration C during cooking is detected by the smoke sensor in the range hood; the cooking time T for each cooking by the user and the exhaust air volume Q of the range hood are recorded; the fume generation amount N1 during each cooking process can be calculated through the fume concentration C, the exhaust air volume Q, and the cooking time T; N1 = Q * C * T; by accumulating the fume generation amount N1 for each cooking, the total actual fume generation amount N is calculated; when the actual fume generation amount N reaches the set threshold value Nmax, the user is reminded to start ozone disinfection, and the range hood enters the disinfection mode.

[0050] For the range hood with a disinfection function of the present utility model, the control module further includes a timing module and a TVOC sensor. The timing module records the cumulative working time T1 of the range hood and the cumulative standby time T2 of the range hood. The TVOC sensor detects the real-time TVOC concentration value C when the range hood is in the shutdown state. When T1≥T1max, or E≥Emax, or 0<T1<T1max and T2≥T2max, the main control unit controls the states of the air collecting cavity, the fan 2 and the ozone generating unit 3 to disinfect the air collecting cavity. For users who cook less, since the daily cooking time is short and the generated oil fume or oil stain is less, but if these oil fume or oil stains are not cleaned for a long time, bacteria will still be generated and at the same time an irritating odor will be generated. Therefore, the irritating odor inside the range hood is detected by the TVOC sensor built in the range hood to trigger the ozone disinfection and sterilization function. The main control unit of the range hood records the cumulative working time T1 and the cumulative standby time T2 of the range hood; the TVOC sensor detects the real-time TVOC concentration value C when the range hood is in the shutdown state; the set threshold for the cumulative working time of the range hood is T1max, the set threshold for the cumulative standby time of the range hood is T2_max, and the set threshold for the TVOC concentration is Cmax; when T1≥T1max, or E≥Emax, or 0<T1<T1max and T2≥T2max, the main control unit controls the states of the air collecting cavity, the fan 2 and the ozone generating unit 3 to disinfect the air collecting cavity. That is to say, when the cumulative working time of the range hood reaches the threshold, or when the TVOC sensor detects that the TVOC concentration value reaches the threshold when the range hood is in the shutdown state, the range hood will enter the disinfection mode; in some cases, the user has used the range hood for a period of time. At this time, neither the cumulative working time nor the TVOC concentration value of the range hood reaches the threshold, but the cumulative standby time of the range hood reaches the threshold. At this time, the range hood will also enter the standby mode to disinfect the air collecting cavity.

[0051] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements or improvements made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A range hood with a disinfection function, characterized in that: include: A range hood body (1) has an air collecting chamber, the user side of the range hood body (1) having a front panel (11) and a movable panel (12), the front panel (11) being provided with an air inlet (111) connected to the air collecting chamber, the movable panel (12) being movable relative to the front panel (11) to open or close the air inlet (111); an air outlet is provided at the top of the range hood body (1), an electric check valve (13) is provided at the air outlet, the electric check valve (13) being used to open or close the air outlet; the air collecting chamber has an open state and a closed state; A fan (2) is arranged in the air collecting chamber; an ozone generating unit (3) disposed in the range hood body (1), and having a state of being connected to the air collecting chamber and a state of being isolated from the air collecting chamber; A control module, the control module comprising a main control unit, an ozone sensor detection unit, an air outlet detection unit, and an air inlet detection unit, the main control unit controlling the states of the air collecting chamber, the fan (2), and the ozone generating unit (3); The range hood has an operation mode and a disinfection mode. In the operation mode, the movable panel (12) moves relative to the front panel 11 and opens the air inlet (111), the electric check valve (13) opens the air outlet, the air collecting chamber is in an open state, the fan (2) operates, and the ozone generating unit (3) is isolated from the air collecting chamber; in the disinfection mode, the movable panel (12) moves relative to the front panel (11) and closes the air inlet (111), the electric check valve (13) closes the air outlet, the air collecting chamber is in a closed state, the fan (2) operates at the lowest gear, and the ozone generating unit (3) is connected to the air collecting chamber.

2. The range hood with disinfection function according to claim 1, characterized in that: The ozone generating unit (3) comprises an ozone generator (31), a switch valve assembly (32) and a housing (33); a communicating hole communicating with an air collecting chamber is provided at the top of the range hood body (1); the switch valve assembly (32) is used to open or close the communicating hole; the housing (33) is arranged at the top of the range hood body (1) and covers the ozone generator (31) and the switch valve assembly (32); when the switch valve assembly (32) opens the communicating hole, the interior of the housing (33) communicates with the air collecting chamber.

3. The range hood with disinfection function according to claim 2, characterized in that: When the switch valve assembly (32) opens the communicating hole, the projection of the emission end of the ozone generator (31) falls within the communicating hole, and an extension line of the extension direction of the emission end of the ozone generator (31) passes through the communicating hole.

4. The range hood with disinfection function according to claim 2, characterized in that: The switch valve assembly (32) comprises a drive motor (321), a drive plate (322) and a switch valve plate (323); the drive plate (322) has a first connection position connected to an output end of the drive motor (321) and a second connection position connected to the switch valve plate (323); the drive motor (321) drives the drive plate (322) to rotate, so that the drive plate (322) drives the switch valve plate (323) to rotate and open the connecting hole.

5. The range hood with disinfection function according to claim 4, characterized in that: The length of a line connecting the midpoint of the edge of the switch valve plate at one end close to the second connection position and the midpoint of the first connection position is L1, and the length of a line connecting the midpoint of the edge of the switch valve plate at one end away from the second connection position and the midpoint of the first connection position is L2, L1<L2, when the connecting hole is in a closed state, the switch valve plate (323) is in the lowest position and seals the connecting hole, when the drive motor (321) drives the drive plate (322) to rotate, the end of the switch valve plate (323) close to the second connection position performs a rotational motion with L1 as a radius, and the end of the switch valve plate (323) away from the second connection position performs a rotational motion with L2 as a radius.

6. The range hood with disinfection function according to claim 4, characterized in that: The ozone generator (31) is arranged on the upper surface of the switch valve plate (323), and the emission end of the ozone generator (31) extends to an edge of one end of the switch valve plate close to the second connection position.

7. The range hood with disinfection function according to claim 1, characterized in that: The control module further comprises a smoke sensor, a timing module and an air volume detection module, wherein the smoke sensor detects the oil fume concentration during cooking, the timing module records the time T of each cooking by the user, and the air volume detection module detects the exhaust air volume Q of the range hood, and calculates the oil fume generation amount within the accumulated time according to the accumulated cooking time and exhaust air volume of the oil fume concentration. When the oil fume generation amount reaches a threshold, the main control unit controls the states of the air collecting chamber, the fan (2) and the ozone generating unit (3) to disinfect the air collecting chamber.

8. The range hood with disinfection function according to claim 7, characterized in that: The control module further comprises a timing module and a TVOC sensor. The timing module records the cumulative working time T1 of the range hood and the cumulative standby time T2 of the range hood. The TVOC sensor detects when the range hood is in a powered-off state and detects the TVOC concentration value C in real time. When T1≥T1max, or E≥Emax, or 0<T1<T1max and T2≥T2max, the main control unit controls the states of the air collecting chamber, the fan (2) and the ozone generating unit (3) to disinfect the air collecting chamber.

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