Ozone disinfection device, ozone disinfection method and range hood

Abstract

The invention belongs to the technical field of range hoods, and discloses an ozone disinfection device, an ozone disinfection method and a range hood. The ozone disinfection device comprises an ozone generator, a three-way air pipe and an air pump, the ozone generator is arranged on the outer side of the top of a machine shell of the range hood, the machine shell is provided with a first inner cavity, a fan assembly is arranged in the first inner cavity, and the fan assembly is provided with a second inner cavity; a first port of the three-way gas pipe is connected with the gas supply end of the ozone generator, and a gas nozzle is arranged at a second port, assembled on the fan assembly and communicated with the second inner cavity; the air pump is arranged on the outer side of the machine shell, an air inlet of the air pump is provided with an air inlet pipe communicated with the first inner cavity, and an air outlet of the air pump is communicated with a third port of the three-way air pipe. The device is used for disinfecting the interior of the shell of the range hood, and is simple in sealing and mounting structure and easy to implement; the air pump provides power for one-way flowing of gas, so that the dispersion uniformity of ozone is facilitated, and the disinfection efficiency and the disinfection effect are improved.

Description

Technical Field

[0001] The present invention relates to the technical field of range hoods, and particularly to an ozone disinfection device, an ozone disinfection method, and a range hood. Background Art

[0002] The disinfection star rating represents the level of the disinfection effect of a disinfection cabinet. The national standard stipulates the disinfection requirements for two levels: one-star and two-star. One-star means that the disinfection cabinet can effectively kill bacteria with general resistance such as Escherichia coli and Staphylococcus aureus; two-star means that the disinfection cabinet can effectively kill stubborn viruses and bacteria such as hepatitis B virus.

[0003] During the operation of the range hood, a large amount of oil stains will adhere to the impeller and the inner wall of the volute. As time goes by, the amount of oil stains will increase, and even after cleaning, the oil stains cannot be completely cleaned. Due to the presence of oil stains, some bacteria or viruses will also grow on the surface or inside of the oil stains. During the cooking process, these bacteria or viruses will contaminate the cooking utensils, thus affecting human health. A range hood with one-star or two-star disinfection can perform one-star or two-star disinfection on the oil stains inside the range hood, thereby killing Escherichia coli and the like attached to the oil stains and preventing germs from entering the cooking utensils.

[0004] In the prior art, an ozone generator is integrated on the range hood to achieve ozone disinfection of the oil stains inside the range hood. When the ozone generator is arranged inside the housing, it has the advantage of a compact structure, but it is likely to cause relatively large noise during the operation of the fan; when the ozone generator is arranged outside the housing, a separate ozone purification chamber needs to be set up to seal the ozone generator, and the diffusion speed of ozone into the housing is slow and the uniformity is poor, affecting the disinfection efficiency. Starting the fan can increase the uniform dispersion efficiency of ozone. The problems are that the operating power of the fan is large, and a sealing valve plate needs to be set in the exhaust chamber or the air outlet chamber to achieve ozone sealing, and the sealing is difficult. Summary of the Invention

[0005] One of the technical problems to be solved by the present invention is to provide an ozone disinfection device that can effectively solve the problems of difficult sealing and low disinfection efficiency when the ozone generator is arranged outside the housing.

[0006] Another technical problem to be solved by the present invention is to provide an ozone disinfection method that can effectively solve the problems of poor sealing and low disinfection efficiency during ozone disinfection.

[0007] The third technical problem to be solved by the present invention is to provide a range hood that can effectively solve the problems of poor sealing and low disinfection efficiency during ozone disinfection.

[0008] The above first technical problem is solved by the following technical solutions:

[0009] An ozone disinfection device, comprising:

[0010] An ozone generator, which is arranged on the outer side of the top of the casing of the range hood. The casing has a first inner cavity, and a fan assembly is arranged in the first inner cavity. The fan assembly has a second inner cavity;

[0011] A three-way air pipe, the first port of the three-way air pipe is connected to the air supply end of the ozone generator, the second port of the three-way air pipe is provided with a nozzle, the second port of the three-way air pipe extends into the first inner cavity, the nozzle is assembled on the fan assembly, and the nozzle communicates with the second inner cavity;

[0012] An air pump, which is arranged on the outer side of the casing. The air inlet of the air pump is provided with an air inlet pipe, the air inlet pipe communicates with the first inner cavity, and the air outlet of the air pump communicates with the third port of the three-way air pipe.

[0013] The ozone disinfection device of the present invention, compared with the background technology, has the beneficial effects as follows:

[0014] The ozone disinfection device of the present invention is used to disinfect the inside of the casing of the range hood. The ozone disinfection device includes an ozone generator, a three-way air pipe and an air pump. The ozone generator and the air pump are both arranged on the outer side of the top of the casing. The air outlet of the air pump communicates with the third port of the three-way air pipe. The air supply end of the ozone generator is connected to the first port of the three-way air pipe. The second port of the three-way air pipe is provided with a nozzle and communicates with the second inner cavity of the fan assembly. The air pump communicates with the first inner cavity of the casing through the air inlet pipe to form a gas circulation pipeline. The air pump inhales gas from the first inner cavity and sends the gas into the connection of the three-way air pipe to be mixed with ozone, so that the ozone-containing gas does not pass through the smoke exhaust cavity of the range hood and directly enters the fan assembly through the second port. Therefore, there is no need to additionally set a sealing valve plate in the smoke exhaust cavity, and the sealing and installation of the three-way air pipe and the air inlet pipe are simpler and easier to implement; the air pump provides the power for the unidirectional flow of gas, which is beneficial to the circulation of the ozone-containing gas in the gas circulation pipeline, improves the dispersion uniformity of ozone in the first inner cavity and the second inner cavity, and cooperates with the ozone generator to maintain a constant ozone concentration in the first inner cavity and the second inner cavity, improving the disinfection efficiency and disinfection effect; the air pump is only used for the flow and premixing of gas, and can operate with a power smaller than that of the fan of the range hood, generating a small gas pressure, so the sealing difficulty is greatly reduced.

[0015] In one embodiment, the ozone disinfection device further includes a check valve, and the check valve is arranged between the air outlet of the air pump and the third port of the three-way air pipe. The check valve can make the gas conduct unidirectionally from the air pump to the three-way air pipe.

[0016] In one embodiment, the check valve includes:

[0017] A valve body, the valve body is provided with a valve cavity, the valve cavity extends along the axial direction of the valve body, and both ends of the valve cavity are respectively communicated with an inlet end and an outlet end;

[0018] A piston, the piston is slidably arranged in the valve cavity. When gas flows in from the inlet end, the gas pressure can drive the piston to slide away from the inlet end to open the inlet end;

[0019] A spring, one end of the spring is connected to the side of the piston facing away from the inlet end, the other end of the spring is connected to the valve body, and the elastic force of the spring can abut the piston against the inlet end. When the gas pressure at the inlet end is greater than the elastic force of the spring, the piston slides away from the inlet end and opens the inlet end.

[0020] In one embodiment, the fan assembly includes a volute and an impeller arranged in the volute. The impeller includes blades, and the outlet of the air nozzle is obliquely arranged opposite to the blades, so that the air flow flowing out of the air nozzle can drive the impeller to rotate reversely when impacting the blades.

[0021] In one embodiment, a limiting disc is arranged at the outlet of the air nozzle, and the limiting disc is in smooth transition fit with the inner wall of the volute with the same radian.

[0022] The above second technical problem is solved by the following technical solution:

[0023] An ozone disinfection method, using the ozone disinfection device provided by the present invention for disinfection, the ozone disinfection method includes:

[0024] Controlling the ozone generator and the air pump to run simultaneously, so that ozone sequentially passes through the first port, the second port and the air nozzle of the three-way air pipe and enters the second inner cavity and mixes with the gas in the cavity;

[0025] When the ozone concentration in the second inner cavity reaches a specified concentration, controlling the ozone generator to work intermittently to maintain the ozone at the specified concentration for disinfection;

[0026] After the disinfection process lasts for a preset duration, the disinfection ends.

[0027] The ozone disinfection method of the present invention, compared with the background technology, has the beneficial effects of:

[0028] The ozone disinfection method of the present invention enables the simultaneous initiation of the ozone generator and the air pump, allowing for the simultaneous intake and premixing of ozone. The gas circulates in the first inner cavity and the second inner cavity through the intake pipe and the tee pipe, without passing through the smoke exhaust cavity. The gas pressure in the first inner cavity and the second inner cavity is low, facilitating sealing and the uniform dispersion of ozone, resulting in high ozone disinfection efficiency and good effects.

[0029] The above-mentioned third technical problem is solved by the following technical solutions:

[0030] An oil fume extractor includes a housing and an ozone disinfection device provided on the housing.

[0031] The oil fume extractor of the present invention has the following beneficial effects compared with the background technology:

[0032] For the oil fume extractor of the present invention, by disposing the ozone generator of the ozone disinfection device on the housing, the external placement of the ozone generator is realized. The ozone generator is connected to the second inner cavity of the fan assembly through a tee pipe, and the air pump is connected to the first inner cavity of the housing through an intake pipe. The air pump continuously extracts gas from the first inner cavity and sends it into the second inner cavity through the tee pipe. The ozone generator is connected to the tee pipe, thereby realizing ozone circulation and mixing. By providing the intake pipe and the tee pipe, the sealed connection is simplified and it is more conducive to achieving sealing; the air pump provides the power for gas circulation, which is conducive to accelerating the uniform dispersion of ozone, and thus conducive to improving the ozone disinfection efficiency and effect.

[0033] In one embodiment, an electrical box is provided at the top of the housing, and the ozone disinfection device is provided outside the housing and within the electrical box.

[0034] In one embodiment, a wall hanging hole is provided on the back of the housing for hanging the housing on a wall, and a sealing cover is provided on the wall hanging hole.

[0035] In one embodiment, the oil fume extractor further includes a check valve assembly. The check valve assembly includes a body and a valve flap. The body has an air outlet, and a circumferential boss is provided on the inner wall of the air outlet. The valve flap is rotatably disposed on the inner wall of the body. When the impeller rotates forward, the valve flap rotates to open; when the impeller rotates in the reverse direction, the valve flap rotates to close and abuts against the boss. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 Schematic structural diagram of the closed state of the movable panel assembly of the oil fume extractor provided by the present invention;

[0037] Figure 2 Schematic structural diagram of the open state of the movable panel assembly of the oil fume extractor provided by the present invention;

[0038] Figure 3 Schematic diagram of the structural composition of the ozone disinfection device provided by the present invention;

[0039] Figure 4 Schematic diagram of the structures of the back and top of the range hood provided by the present invention;

[0040] Figure 5 For Figure 4 Enlarged schematic diagram of area A in

[0041] Figure 6 Schematic diagram of the structure of the one-way valve in the ozone disinfection device provided by the present invention;

[0042] Figure 7 Schematic diagram of the installation position of the air nozzle on the volute in the ozone disinfection device provided by the present invention;

[0043] Figure 8 For Figure 7 Enlarged schematic diagram of area B in

[0044] Figure 9 Schematic diagram of the structure of the air nozzle in the ozone disinfection device provided by the present invention;

[0045] Figure 10 Schematic diagram of the structure of the casing of the range hood provided by the present invention;

[0046] Figure 11 Schematic diagram of the structure of the check valve assembly of the range hood provided by the present invention.

[0047] Label description:

[0048] 100, casing; 101, first inner cavity; 102, wall mounting hole; 103, sealing cover;

[0049] 200, upper panel assembly; 300, lower panel assembly; 400, movable panel assembly;

[0050] 500, check valve assembly; 501, body; 502, valve disc; 503, boss;

[0051] 600, fan assembly; 601, volute; 6011, second inner cavity; 602, impeller; 6021, blade; 603, motor; 700, electrical box;

[0052] 1, ozone generator; 2, three-way air pipe; 3, air pump; 31, intake pipe; 4, air nozzle; 41, limit disc; 5, one-way valve; 51, valve body; 511, valve cavity; 512, inlet end; 513, outlet end; 52, piston; 53, spring; 531, bracket; 54, end cover. Detailed implementation manners

[0053] Next, the technical solutions in the embodiments of the present application will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present application.

[0054] In the description of the present application, it should be understood that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present application.

[0055] The terms "first" and "second" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present application, unless otherwise specified, the meaning of "a plurality" is two or more.

[0056] In the description of the present application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected, or indirectly connected through an intermediate medium, and it may be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific situations.

[0057] The present invention provides an ozone disinfection device, an ozone disinfection method and a range hood. The ozone disinfection device and the ozone disinfection method are used for disinfecting the interior of the range hood. Among them, the range hood is as Figures 1 - 3As shown in the figure, the range hood includes a housing 100, an upper panel assembly 200, a lower panel assembly 300, a movable panel assembly 400, a check valve assembly 500, and a blower assembly 600. The housing 100 has a first inner cavity 101. The movable panel assembly 400 is located between the upper panel assembly 200 and the lower panel assembly 300. The movable panel assembly 400 can be rotated to open and close the first inner cavity 101, and the first inner cavity 101 is also the smoke collecting cavity of the range hood. A check valve assembly 500 is provided at the top of the housing 100, and the check valve assembly 500 is used to connect the exhaust pipe. A blower assembly 600 is provided in the first inner cavity 101 of the housing 100. The blower assembly 600 includes a volute 601, an impeller 602, and a motor 603. The volute 601 has a second inner cavity 6011. The impeller 602 is arranged in the second inner cavity 6011. The motor 603 is used to drive the impeller 602 to rotate forward. The impeller 602 includes blades 6021, and the first inner cavity 101 communicates with the second inner cavity 6011.

[0058] Combined with Figures 3 - 5 , the ozone disinfection device provided by the present invention includes an ozone generator 1, a three-way air pipe 2, and an air pump 3. The ozone generator 1 is arranged outside the top of the housing 100 of the range hood. The first port of the three-way air pipe 2 is connected to the air supply end of the ozone generator 1. A nozzle 4 is provided at the second port of the three-way air pipe 2. The second port of the three-way air pipe 2 extends into the first inner cavity 101. The nozzle 4 is assembled on the blower assembly 600, and the nozzle 4 communicates with the second inner cavity 6011. The air pump 3 is arranged outside the housing 100. An intake pipe 31 is provided at the air inlet of the air pump 3. The intake pipe 31 communicates with the first inner cavity 101. The air outlet of the air pump 3 communicates with the third port of the three-way air pipe 2.

[0059] The ozone disinfection device of the present invention is used to disinfect the interior of the casing 100 of the range hood. The ozone disinfection device includes an ozone generator 1, a three-way air pipe 2, and an air pump 3. The ozone generator 1 and the air pump 3 are both arranged outside the top of the casing 100. The air outlet of the air pump 3 is connected to the third port of the three-way air pipe 2. The air supply end of the ozone generator 1 is connected to the first port of the three-way air pipe 2. The second port of the three-way air pipe 2 is provided with a nozzle 4 and is connected to the second inner cavity 6011 of the fan assembly 600. The air pump 3 is connected to the first inner cavity 101 of the casing 100 through an air inlet pipe 31 to form a gas circulation pipeline. The air pump 3 sucks in gas from the first inner cavity 101 and sends the gas to the connection of the three-way air pipe 2 to be mixed with ozone, so that the ozone-containing gas does not pass through the smoke exhaust cavity of the range hood and directly enters the fan assembly 600 through the second port. Therefore, there is no need to additionally set a sealing valve plate in the smoke exhaust cavity, and both the three-way air pipe 2 and the air inlet pipe 31 are pipe fittings passing through the casing 100, so the sealing and installation are simpler and easier to implement; the air pump 3 provides the power for the unidirectional flow of gas, which is beneficial to the circulation of the ozone-containing gas in the gas circulation pipeline, improves the dispersion uniformity of ozone in the first inner cavity 101 and the second inner cavity 6011, and cooperates with the ozone generator 1 to maintain a constant ozone concentration in the first inner cavity 101 and the second inner cavity 6011, improving the disinfection efficiency and disinfection effect; the air pump 3 is only used for the flow and premixing of gas and can operate at a power less than that of the motor 603 of the range hood, generating a small gas pressure, so the sealing difficulty is greatly reduced.

[0060] In one embodiment, the ozone disinfection device further includes a one-way valve 5. The one-way valve 5 is arranged between the air outlet of the air pump 3 and the third port of the three-way air pipe 2. The one-way valve 5 can unidirectionally conduct gas flowing from the air pump 3 to the three-way air pipe 2.

[0061] As Figure 3 and Figure 5 shown, the function of the one-way valve 5 is that under the action of the gas pressure in the gas circulation pipeline, the gas can only flow unidirectionally from the air pump 3 to the three-way air pipe 2 and can effectively prevent the high-concentration ozone from flowing back from the three-way air pipe 2 to the air pump 3. By controlling the air pump 3, the gas pressure in the gas circulation pipeline can be controlled to obtain a better ozone mixing effect and disinfection effect.

[0062] In one embodiment, the one-way valve 5 includes a valve body 51, a piston 52 and a spring 53. The valve body 51 is provided with a valve cavity 511 which extends along the axial direction. The two ends of the valve cavity 511 are respectively communicated with an inlet end 512 and an outlet end 513. Gas can enter from the inlet end 512, pass through the valve cavity 511 and then be discharged from the outlet end 513. The piston 52 is slidably arranged in the valve cavity 511. When the gas flows in from the inlet end 512, the gas pressure can drive the piston 52 to slide away from the inlet end 512 to open the inlet end 512, forming an air flow channel. One end of the spring 53 is connected to the side of the piston 52 facing away from the inlet end 512, and the other end of the spring 53 is connected to the valve body 51. The elastic force of the spring 53 can abut the piston 52 against the inlet end 512. When the gas pressure at the inlet end 512 is greater than the elastic force of the spring 53, the piston 52 slides away from the inlet end 512 and opens the inlet end 512.

[0063] As Figure 6 shown, the gas flows from left to right. In the initial state, under the elastic force of the spring 53, the piston 52 elastically abuts against the inlet end 512 to seal the inlet end 512. After the ozone generator 1 is started, the ozone generator 1 is connected to the side of the outlet end 513. The pressure of ozone and the elastic force of the spring 53 act on the piston 52 at the same time. Therefore, the piston 52 can closely abut against the inlet end 512 to prevent ozone from passing through, realizing one-way cut-off. After the air pump 3 is started, the gas enters the valve cavity 511 from the left. When the gas pressure on the left side of the piston 52 is greater than the elastic force of the spring 53 and the static pressure of ozone, the spring 53 is compressed, and the piston 52 slides to the right and then leaves the air flow channel of the inlet end 512, and the air flow flows smoothly. During the flow process, the gas has a certain pressure cycle. For the ozone generated by the ozone generator 1, since the pressure of the ozone gas on the right side of the piston 52 is in the same direction as the elastic force of the spring 53, if reverse flow occurs, the piston 52 will be pressed tightly against the inlet end 512 under the action of the gas pressure of the ozone gas and the elastic force of the spring 53, and the air flow channel will be sealed and blocked, thereby effectively preventing air flow backflow and realizing one-way conduction and reverse cut-off. It should be noted that for the convenience of installation, the valve body 51 can be of a split type, and the two ends of the valve body 51 can be sealed and connected by end caps 54. The air pump 3 and the three-way water pipe 2 are respectively connected through the end caps 54 at both ends, which is convenient for connection and sealing. A bracket 531 for installing the spring 53 is arranged in the valve body 51 to ensure good coaxiality between the spring 53 and the piston 52.

[0064] In one embodiment, the outlet of the air nozzle 4 is obliquely arranged opposite to the blade 6021, so that the air flow flowing out of the air nozzle 4 can drive the impeller 602 to rotate reversely when impacting the blade 6021.

[0065] As Figure 7 and Figure 8As shown in the figure, the air nozzle 4 is arranged on the volute 601 and communicates with the second inner cavity 6011. The outlet direction of the air nozzle 4 is obliquely opposite to the blade 6021. That is, when the gas is ejected from the air nozzle 4, the blade 6021 can rotate reversely under the action of the air flow pressure. Since the blade 6021 rotates reversely, the check valve assembly 500 on the smoke exhaust cavity can play a good sealing role, without the need for an additional sealing structure, and the sealing pressure is small, which is easy to achieve. After the blade 6021 rotates reversely, it will disturb the gas in the second inner cavity 6011, accelerating the gas flow in the second inner cavity 6011 and the first inner cavity 101, thus facilitating the mixing of ozone and air, improving the mixing uniformity, and being conducive to improving the ozone disinfection effect and disinfection efficiency.

[0066] In one of the embodiments, the outlet of the air nozzle 4 and the inner wall of the volute 601 are installed with a smooth transition fit of the same radian.

[0067] As Figure 8 and Figure 9 shown in the figure, the air nozzle 4 is fixed on the volute 601. The part of the air nozzle 4 located inside the volute 601 has a limiting disc 41. One side of the limiting disc 41 can be attached to the inner wall of the volute 601. There is a smooth transition connection between the side of the limiting disc 41 facing the blade 6021 and the inner wall of the volute 601. As Figure 8 shown, after the air flow leaves the air nozzle 4, it obliquely faces the blade 6021 to form a reverse rotation driving force for the blade 6021. When the motor 603 starts and the blade 6021 rotates forward, this smooth transition connection method effectively reduces the resistance of the limiting disc 41 to the air flow, thereby avoiding the noise generated during the operation of the impeller 602.

[0068] Based on the ozone disinfection device provided in the above embodiments, the embodiment of the present invention also provides an ozone disinfection method, specifically as follows:

[0069] The ozone generator 1 and the air pump 3 are started and operated simultaneously. Ozone sequentially enters the second inner cavity 6011 through the first port, the second port and the air nozzle 4 of the three-way air pipe 2 and mixes with the gas in the cavity. The mixed gas flows through the first inner cavity 101 and the air inlet pipe 31 under the action of the air pump 3 to the third port of the three-way air pipe 2 to realize circulation;

[0070] When the ozone concentration in the second inner cavity 6011 reaches the specified concentration, control the ozone generator 1 to work intermittently to maintain the ozone at the specified concentration;

[0071] After the disinfection process lasts for a preset duration, the disinfection ends.

[0072] The ozone disinfection method of the present invention starts the ozone generator 1 and the air pump 3 simultaneously, enabling the simultaneous intake and premixing of ozone. The gas circulates in the first inner cavity 101 and the second inner cavity 6011 through the intake pipe 31 and the three-way air pipe 2. The gas does not pass through the smoke exhaust cavity. The gas pressure in the first inner cavity 101 and the second inner cavity 6011 is low, which is conducive to sealing and the uniform dispersion of ozone. The ozone disinfection efficiency is high and the effect is good.

[0073] It should be noted that in this embodiment, the ozone generator 1 is an air pump type ozone generator. When the ozone concentration reaches 20 mg / m 3 -40 mg / m 3 , the ozone generator 1 is intermittently started and maintained at this ozone concentration for 30 - 60 min, which can achieve the one-star disinfection of the range hood. When the ozone concentration reaches 40 mg / m 3 or above, control the ozone generator 1 to work intermittently and maintain the ozone at this concentration for more than 60 min, which can achieve the two-star disinfection of the range hood. During the ozone disinfection process, all other functions of the range hood are disabled, unless the disinfection function is cancelled. When the disinfection is completed, immediately start the impeller 602 to rotate to discharge the ozone in the first inner cavity 101 and the second inner cavity 6011, and then other functions of the range hood can be started.

[0074] The present invention also provides a range hood, including a casing 100 and an ozone disinfection device provided on the casing 100.

[0075] For the range hood of the present invention, by providing the ozone disinfection device on the casing 100, the external placement of the ozone disinfection device is realized. The ozone generator 1 is connected to the second inner cavity 6011 of the fan assembly 600 through the three-way air pipe 2, and the air pump 3 is connected to the first inner cavity 101 of the casing 100 through the intake pipe 31. The air pump 3 continuously extracts gas from the first inner cavity 101 and sends it into the second inner cavity 6011 through the three-way air pipe 2. The ozone generator 1 is connected to the three-way air pipe 2, thereby realizing ozone circulation and mixing. By providing the intake pipe 31 and the three-way air pipe 2, the sealed connection is simplified and it is more conducive to achieving sealing; the air pump 3 provides the power for gas circulation, which is conducive to accelerating the uniform dispersion of ozone, and thus conducive to improving the ozone disinfection efficiency and effect.

[0076] In one embodiment, an electrical box 700 is provided at the top of the casing 100, and the ozone disinfection device is provided outside the casing 100 and located within the electrical box 700.

[0077] Such as Figure 1 and Figure 3As shown in the figure, an electrical box 700 is provided at the top of the housing 100. The electrical box 700 is arranged in parallel with the check valve assembly 500. The electrical box 700 is fixed on the housing 100. The ozone generator 1, the three-way air pipe 2, and the air pump 3 are all arranged in the electrical box 700, and the electrical box 700 can protect the ozone generating device.

[0078] In one embodiment, a wall hanging hole 102 is provided on the back of the housing 100. The wall hanging hole 102 is used to hang the housing 100 on the wall, and a sealing cover 103 is provided on the wall hanging hole 102.

[0079] As Figure 4 shown, two wall hanging holes 102 are provided on the back of the housing 100 to facilitate the installation and fixation of the housing 100. As Figure 10 shown, two sealing covers 103 are provided at positions inside the housing 100 corresponding to the wall hanging holes 102. The sealing covers 103 respectively seal the two wall hanging holes 102 to prevent ozone leakage from the first inner cavity 101.

[0080] In one embodiment, the range hood further includes a check valve assembly 500. The check valve assembly 500 includes a body 501 and a valve flap 502. The body 501 has an air outlet, and a circumferential boss 503 is provided on the inner wall of the air outlet. The valve flap 502 is rotatably arranged on the inner wall of the body 501. When the impeller 602 rotates forward, the valve flap 502 rotates to open; when the impeller 602 rotates in the reverse direction, the valve flap 502 rotates to close and abuts against the boss 503.

[0081] As Figure 1 and Figure 11 shown, the body 501 of the check valve assembly 500 is fixed on the top of the housing 100, and the air outlet is connected to the exhaust pipe to realize exhaust. The valve flap 502 is a check valve flap, which is beneficial for exhaust and has a check function. In this embodiment, a circle of bosses 503 is provided on the inner wall of the body 501, and the bosses 503 extend a little length towards the center of the body 501. When the valve flap 502 rotates to close, the valve flap 502 can overlap on the bosses 503 to achieve check valve sealing. Since the impeller 602 rotates in the reverse direction during the ozone disinfection process, the gas pressure generated during the rotation process does not have a turning driving force on the valve flap 502, and the valve flap 502 can well seal the ozone in the housing 100. It should be noted that during the disinfection process, when the movable panel assembly 400 rotates to close, it can seal the first inner cavity 101 of the housing 100 to meet the ozone sealing requirements.

[0082] In the specific content of the above specific implementation manners, the technical features can be combined arbitrarily without contradiction. For the sake of concise description, not all possible combinations of the above technical features are described. However, as long as the combinations of these technical features do not exist in contradiction, they should all be considered as the scope recorded in this specification.

[0083] The specific content of the above specific embodiments only expresses several embodiments of the present invention. Its description is relatively specific and detailed, but it cannot be understood as a limitation on the scope of the patent for the present invention. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several modifications and improvements can still be made, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent for the present invention shall be subject to the appended claims.

Claims

1. Ozone disinfection device, characterized in that, it includes: an ozone generator (1), the ozone generator (1) is arranged outside the top of the housing (100) of the range hood, the housing (100) has a first inner cavity (101), a blower assembly (600) is arranged in the first inner cavity (101), and the blower assembly (600) has a second inner cavity (6011); a three-way air pipe (2), the first port of the three-way air pipe (2) is connected to the air supply end of the ozone generator (1), the second port of the three-way air pipe (2) is provided with an air nozzle (4), the second port of the three-way air pipe (2) extends into the first inner cavity (101), the air nozzle (4) is assembled on the blower assembly (600), and the air nozzle (4) communicates with the second inner cavity (6011); an air pump (3), the air pump (3) is arranged outside the housing (100), an air inlet pipe (31) is provided at the air inlet of the air pump (3), the air inlet pipe (31) communicates with the first inner cavity (101), and the air outlet of the air pump (3) communicates with the third port of the three-way air pipe (2).

2. The ozone disinfection device according to claim 1, characterized in that, it further includes a one-way valve (5), the one-way valve (5) is arranged between the air outlet of the air pump (3) and the third port of the three-way air pipe (2), and the one-way valve (5) can make the gas conduct unidirectionally from the air pump (3) to the three-way air pipe (2).

3. The ozone disinfection device according to claim 2, characterized in that, the one-way valve (5) includes: a valve body (51), the valve body (51) is provided with a valve cavity (511), the valve cavity (511) extends along the axial direction of the valve body (51), and the two ends of the valve cavity (511) are respectively communicated with an inlet end (512) and an outlet end (513); a piston (52), the piston (52) is slidably arranged in the valve cavity (511), when the gas flows in from the inlet end (512), the gas pressure can drive the piston (52) to slide away from the inlet end (512) to open the inlet end (512); a spring (53), one end of the spring (53) is connected to the side of the piston (52) facing away from the inlet end (512), the other end of the spring (53) is connected to the valve body (51), and the elastic force of the spring (53) can stop the piston (52) against the inlet end (512). When the gas pressure at the inlet end (512) is greater than the elastic force of the spring (53), the piston (52) slides away from the inlet end (512) and opens the inlet end (512).

4. The ozone disinfection device according to claim 1, characterized in that, The blower assembly (600) includes a volute (601) and an impeller (602) disposed within the volute (601). The impeller (602) includes blades (6021). The outlet of the air nozzle (4) is obliquely arranged opposite to the blades (6021) such that the airflow flowing out of the air nozzle (4) can drive the impeller (602) to rotate reversely when impinging on the blades (6021).

5. The ozone disinfection device according to claim 4, characterized in that, a limiting disk (41) is provided at the outlet of the air nozzle (4), and the limiting disk (41) is in smooth transition fit with the inner wall of the volute (601) with the same radian.

6. An ozone disinfection method, characterized in that, disinfection is performed using the ozone disinfection device according to any one of claims 1-5. The ozone disinfection method includes: controlling the ozone generator (1) and the air pump (3) to operate simultaneously so that ozone sequentially enters the second inner cavity (6011) through the first port, the second port of the three-way air pipe (2), and the air nozzle (4) and mixes with the gas in the cavity; when the ozone concentration in the second inner cavity (6011) reaches a specified concentration, controlling the ozone generator (1) to work intermittently to maintain the ozone at the specified concentration for disinfection; after the disinfection process lasts for a preset duration, the disinfection ends.

7. A range hood, characterized in that, it includes a housing (100) and the ozone disinfection device according to any one of claims 1-5 provided on the housing (100).

8. The range hood according to claim 7, characterized in that, an electrical box (700) is provided at the top of the housing (100), and the ozone disinfection device is provided outside the housing (100) and within the electrical box (700).

9. The range hood according to claim 7, characterized in that, hanging wall holes (102) are provided on the back of the housing (100). The hanging wall holes (102) are used for hanging the housing (100) on a wall, and a sealing cover (103) is provided on the hanging wall holes (102).

10. The range hood according to claim 7, characterized in that, the range hood further includes a check valve assembly (500). The check valve assembly (500) includes a body (501) and a valve flap (502). The body (501) has an air outlet, and a circumferential boss (503) is provided on the inner wall of the air outlet. The valve flap (502) is rotatably disposed on the inner wall of the body (501). When the impeller (602) rotates forward, the valve flap (502) rotates to open; when the impeller (602) rotates reversely, the valve flap (502) rotates to close and abuts against the boss (503).

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