TW202135658A - Mosquito killing fan system delivering an atomized and supercharged mosquito killing liquid medicine to each positional space - Google Patents

Abstract

Provided is a mosquito killing fan system including a mosquito killing liquid medicine atomizing and supercharging apparatus; at least one delivery and connecting apparatus connected to the mosquito killing liquid medicine atomizing and supercharging apparatus; at least one diffusing and gas discharging apparatus connected to the other end of the delivery and connecting apparatus or connected, by a delivery and connecting apparatus of another unit, with a diffusing and gas discharging apparatus connected in series with each unit; and at least one control circuit apparatus connected between the mosquito killing liquid medicine atomizing and supercharging apparatus and the diffusing and gas discharging apparatus or connected, by a control circuit apparatus of another unit, with a diffusing and gas discharging apparatus connected in series with each unit. Therefore, an atomized and supercharged mosquito killing liquid medicine is delivered to each positional space.

Description

Anti-mosquito fan system

The present invention relates to a fan system, and refers to a mosquito-killing fan system.

The mosquito killer that uses water-based syrup is generally used, because it can only be fixed in a single place by a single unit, and it cannot extend to various locations and spaces. Moreover, the water-based syrup cannot be atomized and output through the device and spread, causing mosquitoes. Large-scale or narrow areas such as bushes, ditches, or damp areas in the flower gardens and green spaces cannot effectively achieve its mosquito-killing effect, which greatly reduces its practicality. This is where the industry and consumers are eager to break through.

In order to solve the above-mentioned shortcomings of the prior art, the main purpose of the present invention is to provide a mosquito-killing blower system, which utilizes the mosquito-killing liquid atomizing and pressurizing device and at least one diffusion outlet device to connect the at least one conveying connecting device and the At least one control circuit device in order to overcome the difficulties in the prior art.

The secondary objective of the present invention is to provide a mosquito-killing fan system that delivers the atomized and pressurized mosquito-killing potion to various locations and spaces and controls the diffuser to release the atomized and pressurized mosquito-killing potion or turn off the atomized and pressurized mosquito potion The anti-mosquito potion.

Another object of the present invention is to provide a mosquito-killing fan system, which effectively improves the convenience and reliability of use.

The problem to be solved by the present invention is that the conventional mosquito killer can only be fixed in a single place by a single machine, and cannot be extended to reach various positions and spaces, and the water-based medicine cannot be atomized and output and spread through the device, causing the mosquitoes to live in the flower garden. Large-scale or narrow areas such as bushes or water ditches or damp areas in green areas cannot effectively kill mosquitoes, which greatly reduces their practicality.

The technical means to solve the problem, in order to achieve the above-mentioned purpose, the present invention provides a mosquito-killing fan system, which is characterized in that it includes: An atomizing and pressurizing device for mosquito-killing potion, which provides the mosquito-killing potion to produce atomization and boosting; At least one delivery connection device is connected to the mosquito-killing potion atomizing and pressurizing device, and is provided to transport the mosquito-killing potion atomizing and pressurizing generated by the mosquito-killing potion atomizing and pressurizing device; At least one diffuser air outlet device is connected to the other end of the conveying connection device or connected to the diffuser air outlet of each unit connected in series through the conveying connection device of another unit, and provides the pressurized atomized atomized delivery through the conveying connection device The spraying and spreading of anti-mosquito potions; At least one control circuit device is connected between the mosquito-killing potion atomizing and pressurizing device and the diffusion air outlet device or is connected in series to the diffusion air outlet device of each unit through the control circuit device of another unit, and provides control of the The diffuser device releases the atomized and pressurized anti-mosquito syrup or turns off the atomized and pressurized anti-mosquito syrup; Thereby, the atomizing and pressurizing device of the anti-mosquito medicine is used to connect the at least one diffuser through the at least one conveying connecting device or through another unit, the conveying connecting device is connected in series with another unit and the diffuser, to pressurize the atomization The anti-mosquito potion is delivered to each location space.

Wherein, the diffusion air outlet device of the present invention is an unpowered diffusion air outlet device or a power diffusion air outlet device.

Wherein, the mosquito-killing potion atomizing and pressurizing device of the present invention is provided with a housing on the outer side and a plurality of air inlet holes in the lower section, and at least one mosquito-killing potion containing device is provided inside the housing. At least one atomization device is arranged on the upper end of the mosquito-killing potion containing device. In order to provide capillary phenomenon, the device for containing mosquito-killing potion is provided with at least one cotton swab to provide the mosquito-killing potion to be delivered to the atomizing device. The device is provided with a motor inhalation and pressurization device that provides atomized mosquito killing potion for pressurization, the housing is provided with a control device connected to the motor inhalation and pressurization device, and the motor inhalation and pressurization device is connected with Provide at least one inner conveying device for conveying pressurized atomized mosquito killer syrup.

Wherein, the motor inhalation and pressurization device of the atomization and pressurization device for the anti-mosquito medicine of the present invention includes an air pump and a motor connected to each other, and the air pump sucks in the atomized anti-mosquito medicine and provides pressure.

Wherein, the upper section of the housing interior of the mosquito-killing medicine atomizing and pressurizing device of the present invention has an air cavity to provide the motor inhalation and pressurizing device on the upper section of the housing when the water is submerged. The air cavity forms an air bag. Prevent water immersion and protect the motor suction booster device.

Wherein, the unpowered diffusion air outlet device of the diffusion air outlet device of the present invention is provided with a housing on the outside, and an air inlet device connected to the conveying connection device and an air outlet device communicated with the air inlet device are arranged inside the housing. The air outlet device is connected with a motor control device, and the upper section of the housing is provided with an air pocket to prevent water flooding and protect the motor control device. The motor control device includes an electromagnet and a valve connected to each other, and the door valve is pulled through the electromagnet To provide release and close the air outlet device.

Wherein, the power diffusion air outlet device of the diffusion air outlet device of the present invention is provided with a housing on the outside, and the housing is provided with an air inlet device connected to the conveying connecting device and an air outlet device communicating with and connected to the air inlet device. There is a motor control device. The upper section of the housing is provided with a motor diffusion air outlet device and adjacent to the air outlet device. The upper section of the housing is provided with an air cavity to prevent water intrusion and protect the motor control device and the motor diffusion air outlet device. The motor controls The device includes an electromagnet and a valve connected to each other, and the door valve is pulled through the electromagnet to provide the release and close the air outlet device.

Wherein, the motor diffusion air outlet device of the power diffusion air outlet device of the present invention includes a motor and a turbofan connected, and a plurality of upper and lower through holes are provided in the middle and lower sections of the housing, and the turbofan is parallel to Located in the upper through hole.

Wherein, the motor diffusion air outlet device of the power diffusion air outlet device of the present invention includes a motor and a fan connected to each other.

Wherein, according to the present invention, the lower end of the casing inside the casing where the power is diffused and the air outlet is provided with an outwardly expanding inclined lower air port, and the lower end of the lower air port is connected to the lower end of the casing and has a plurality of suction holes communicating with the fan.

In contrast to the effect of the prior art, the atomization and pressurization device of the anti-mosquito syrup and the at least one diffusion outlet device are used to connect the at least one conveying connection device and the at least one control line device by connecting the at least one conveying connection device and the at least one control line device; thereby achieving the atomization and pressurization The mosquito-killing potion is delivered to each location and space and the diffuser is controlled to release the atomized and pressurized mosquito potion or turn off the atomized and pressurized mosquito-killing potion; effectively improving the convenience and reliability of use will greatly expand the industry The utility is novel and progressive.

The present invention is described in detail in the form of embodiment with the accompanying drawings as follows. The drawings used in the text are only for illustration and auxiliary description, and may not be the true proportions and accuracy of the present invention after implementation. Therefore, the scope of the patent for actual implementation of the present invention should not be limited by the ratio and configuration relationship of the attached drawings, which shall be explained first.

Please refer to the first, second, third, fourth, fifth, sixth, seventh, eighth, ninth, tenth, eleventh, and twelfth pictures Shown in the figure are the system block diagram of the present invention (1), the system block diagram of the present invention (2), the system block diagram of the present invention (3), the system block diagram of the present invention (4) and the present invention Fig. 1 shows a three-dimensional exploded view of the system where the mist escort device and the air outlet valve are connected through the air pipe, the three-dimensional combined view of the fifth figure of the present invention, the combined three-dimensional partial cross-sectional view of the fifth figure of the present invention, and the first fan of the air outlet device of the present invention The three-dimensional view of the present invention, the three-dimensional partial cross-sectional view of the eighth figure of the present invention, the three-dimensional view of the second fan of the air outlet device of the present invention, the three-dimensional partial cross-sectional view of the tenth figure of the present invention, the fourth figure of the present invention, the mist escort device and the air outlet valve and The three-dimensional combination diagram of the first fan and the second fan connected through the air pipe and the control line. In a preferred embodiment, the mosquito-killing fan system of the present invention is characterized in that it includes: a mosquito-killing potion atomizing and pressurizing device 1 , At least one conveying connection device 2, at least one diffusion air outlet device 3, and at least one control line device 4.

One of the aforementioned mosquito-killing potions atomizing and pressurizing device 1 is to provide the contained mosquito-killing potions to generate atomization and pressurization (as shown in Figures 1 to 4 and 5 to 7 and 12) .

The aforementioned at least one delivery connecting device 2 is connected to the mosquito-killing potion atomizing and pressurizing device 1, and provides for transporting the mosquito-killing potion atomized and pressurized by the mosquito-killing potion atomizing and pressurizing device 1 (such as the first Figures to the fourth and fifth to the seventh and twelfth diagrams).

The aforementioned at least one diffuser gas outlet device 3 is connected to the other end of the conveying connection device 2 or connected to the diffuser gas outlet device 3 of each unit connected in series through the conveying connection device 2 of another unit, and provided through the conveying connection device 2 The spraying and diffusion of the pressurized and atomized anti-mosquito syrup is an air pipe in this embodiment, but the invention is not limited by this (as shown in the first to the twelfth figures).

The aforementioned at least one control circuit device 4 is connected between the mosquito spray atomizing and pressurizing device 1 and the diffusion air outlet device 3 or connected to the diffusion air outlet of each unit in series through the control circuit device 4 of another unit The device 3 is provided to control the diffusion and air outlet device 3 to release the atomized and pressurized mosquito syrup or turn off the atomized and pressurized mosquito syrup. In this embodiment, the control circuit device 4 is a control circuit, but not Therefore, the present invention is limited; using the mosquito-killing potion atomizing and pressurizing device 1 to connect the at least one diffusion outlet device 3 through the at least one delivery connection device 2 or through another unit the delivery connection device 2 to connect another unit the diffusion outlet device 3 in series , The atomized and pressurized mosquito-killing potion is delivered to each location and space, and it is provided for use in large or narrow areas such as bushes or ditches or wet areas in flower gardens and green spaces to effectively achieve the purpose of mosquito-killing (as shown in the first picture) To the fourth and fifth to the seventh and twelfth pictures).

The diffusion air outlet device 3 of the present invention is an unpowered diffusion air outlet device 31 (as shown in Figures 1 to 2 and 5 to 7 and 12) or a power diffusion air outlet device 32 (as shown in the first As shown in Figures, Figures 3, 4, and Figures 8 to 12), the power diffusion air outlet device 32 of the diffusion air outlet device 3 in this embodiment is a first fan 321 (as shown in Figures 8 and 12) Figure 9) or the second fan 322 (as shown in Figure 10 and Figure 11), but the present invention is not limited to this; please refer to Figure 1, as shown in Figure 1, the system is through the mosquito killer The atomization booster device 1 and the at least one diffuser air outlet device 3 are connected through at least one conveying connecting device 2 to form a system; The at least one diffusion air outlet device 3 of the air outlet device 31 is connected through at least one conveying connecting device 2 to form a system; the system shown in Figure 3 passes through the mosquito killer spray atomizing and pressurizing device 1 and at least one power diffusion air outlet device 32 The first fan 321 is connected to a system formed by at least one conveying connection device 2; the system shown in Figure 4 is connected to the second fan 322 of at least one power diffusion and air outlet device 32 through the mosquito spray atomizing and pressurizing device 1 The system is connected through at least one conveying connection device 2.

The mosquito-killing medicine atomizing and pressurizing device 1 of the present invention (as shown in the fifth, sixth, seventh and twelfth figures) is provided with a housing 10 on the outer side and a plurality of air inlet holes in the lower section 100. The housing 10 is provided with at least one mosquito-killing potion containing device 11 provided therein. In this embodiment, the mosquito-killing potion containing device 11 is a tank, but the present invention is not limited to this. At least one atomization device 12 is provided at the upper end of the device 11 containing the mosquito killer liquid. In this embodiment, the atomizer 12 is an ultrasonic oscillator, but the present invention is not limited by this, in order to provide capillary phenomenon in the device 11 for mosquito killer. The potion device 11 is provided with at least one cotton swab 111 to provide anti-mosquito potion to be delivered to the atomizing device 12, and the device 11 for containing mosquito anti-mosquito potions is provided with a motor for inhalation and pressure boosting to provide atomized anti-mosquito potion for pressurization. Device 13, in this embodiment, the motor inhalation and pressurization device 13 of the mosquito-killing medicine atomizing and pressurizing device 1 includes an air pump 131 and a motor 132 connected to each other. The air pump 131 sucks the atomized mosquito-killing medicine and To provide pressurization, the housing 10 is provided with a control device 15 connected to the motor suction and boost device 13, which is a control board in this embodiment, but the invention is not limited by this. The motor suction and boost device 13 At least one inner conveying device 14 for delivering pressurized atomized mosquito killer liquid is connected to it. In this embodiment, the inner conveying device 14 is an inner air pipe, but it does not limit the present invention. The upper section of the housing 10 of the medicine atomizing and pressurizing device 1 has an air cavity 101 to provide the motor suction and pressurization device 13 in the upper section of the housing 10 when the housing 10 is submerged. The air cavity 101 forms an air bag to prevent Water immersion and protection of the motor suction booster device 13.

The unpowered diffuser 31 of the diffuser 3 of the present invention (as shown in the fifth, sixth, seventh and twelfth figures) is provided with a housing 310 on the outside, and the housing 310 is provided with An air inlet device 312 connected to the conveying connecting device 2 and an air outlet device 313 communicating with the air inlet device 312. The air outlet device 313 is connected with a motor control device 314. In this embodiment, the motor control device 314 includes a phase Connect an electromagnet 3141 and a valve 3142. Pull the valve 3142 through the electromagnet 3141 to release and close the air outlet device 313. The upper section of the housing 310 of the unpowered diffusion air outlet device 31 is provided with an air pocket 311 to prevent The motor control device 314 is submerged in water and protected.

The first fan 321 of the power diffusion air outlet device 32 of the present invention (as shown in the eighth, ninth and twelfth figures) is provided with a housing 3211 on the outside, and the housing 3211 is provided with the conveying connection device inside the housing 3211 2 It is connected to an air inlet device 3212 and an air outlet device 3213 communicating with the air inlet device 3212 and connected to a motor control device 3214. The upper section of the housing 3211 is provided with a motor diffuser air outlet device 3215 and is adjacent to the air outlet device 3213, The motor control device 3214 includes an electromagnet 32141 and a valve 32142 connected to each other. The gate valve 32142 is pulled through the electromagnet 32141 to release and close the air outlet device 3213; the motor diffusion air outlet device 3215 includes a motor connected to it. 32151 and a turbofan 32152, and a plurality of upper through holes 32111 and lower through holes 32112 are provided in the middle and lower sections of the casing 211, the turbofan 32152 is located in the upper through hole 32111, and the casing 3211 of the first fan 321 The upper section is provided with an air cavity 32110, which can prevent water ingress and protect the motor from spreading out the air device 3215 and the motor control device 3214.

The second fan 322 of the power diffusion air outlet device 32 of the present invention (as shown in the tenth, eleventh, and twelfth figures) is provided with a housing 3221 on the outside, and the housing 3221 is provided inside with the conveying connection Device 2 is connected to an air inlet device 3222 and an air outlet device 3223 communicating with the air inlet device 3222 and is connected with a motor control device 3224. The upper section of the housing 3221 is provided with a motor diffusion air outlet device 3225 and adjacent to the air outlet device 3223 The motor control device 3224 includes an electromagnet 32241 and a valve 32242 connected to each other. The gate valve 32242 is pulled through the electromagnet 32241 to release and close the air outlet device 3223. The motor diffusion air outlet device 3225 includes a connected one Motor 32251 and a fan 32252. The lower end of the casing 3211 of the second fan 322 has an outwardly expanding inclined lower air port 32211. The lower end of the lower air port 32211 is connected to the lower end of the casing 3211 and communicated with the fan 32252. There are a plurality of air suction holes 32212, and the upper section of the housing 3221 of the second fan 322 is provided with an air cavity 32210, which can prevent water ingress and protect the motor control device 3224 and the motor diffuser 3225.

Thereby, the atomization and pressurization device 1 of the anti-mosquito medicine and the at least one diffusion air outlet device 3 are used to connect the at least one conveying connection device 2 and the at least one control line device 4; The mosquito potion is delivered to each location and space and the diffusion and air outlet device 3 is controlled to release the atomized and pressurized mosquito potion or turn off the atomized and pressurized mosquito potion. Effectively improve the convenience and reliability of use, which will greatly expand the industry Utilization and novelty and progress.

From the above, it can be seen that the present invention has indeed achieved the desired enhancement effect under the breakthrough of the previous technical structure, and it is not easy to think of those who are familiar with the art. Furthermore, the present invention has not been disclosed before the application. Progressiveness and practicability show that it has met the requirements for an invention patent. I filed an invention application in accordance with the law. I implore your office to approve this invention patent application to encourage invention.

The above-mentioned embodiments are only to illustrate the technical ideas and features of the present invention, and their purpose is to enable those who are familiar with the art to understand the content of the present invention and implement them accordingly. When they cannot be used to limit the patent scope of the present invention, That is, all equal changes or modifications made in accordance with the spirit of the present invention should still be covered by the patent scope of the present invention.

1: Mosquito killing potion atomizing and pressurizing device 10: Shell 100: air inlet 101: Cavitation 11: Containing anti-mosquito potion device 111: cotton swab 12: Atomization device 13: Motor suction booster device 131: Air Pump 132: Motor 14: Inner conveying device 15: Control device 2: Conveying connection device 3: Diffusion air outlet device 31: Unpowered diffusion air outlet device 310: Shell 311: air pocket 312: Air intake device 313: Venting Device 314: Motor Control Device 3141: Electromagnet 3142: Valve 32: Power diffusion air outlet device 321: First Fan 3211: Shell 32110: Cavitation 32111: upper through hole 32112: Lower through hole 3212: intake device 3213: Venting Device 3214: Motor control device 32141: Electromagnet 32142: Valve 3215: Motor diffusion air outlet device 32151: Motor 32152: Turbofan 322: The second fan 3221: Shell 32210: Cavitation 32211: Downwind 32212: suction hole 3222: intake device 3223: Venting Device 3224: Motor control device 32241: Electromagnet 32242: Valve 3225: Motor diffusion air outlet device 32251: Motor 32252: Fan 4: Control circuit device

The first figure: is the system block diagram of the present invention (1). The second figure: is the system block diagram of the present invention (2). The third figure: is the system block diagram of the present invention (3). The fourth figure: is the system block diagram of the present invention (four). Figure 5: is an exploded perspective view of the mist escort device and the air outlet valve of the system in Figure 1 of the present invention connected through the air pipe. Figure 6: It is a three-dimensional combined view of Figure 5 of the present invention. Figure 7: is the combined three-dimensional partial cross-sectional view of Figure 5 of the present invention. Figure 8: is a three-dimensional view of the first fan of the air outlet device of the present invention. Figure ninth: is a three-dimensional partial cross-sectional view of Figure 8 of the present invention. Figure 10: is a three-dimensional view of the second fan of the air outlet device of the present invention. Figure 11: is a three-dimensional partial cross-sectional view of Figure 10 of the present invention. Figure twelfth: is a three-dimensional assembly diagram of the mist escort device and the air outlet valve of the fourth figure system of the present invention, and the first fan and the second fan are connected through the air pipe and the control line.

1: Mosquito killing potion atomizing and pressurizing device

2: Conveying connection device

3: Diffusion air outlet device

4: Control circuit device

Claims (10)

A mosquito-killing fan system is characterized by: An atomizing and pressurizing device for mosquito-killing potion, which provides the mosquito-killing potion to produce atomization and boosting; At least one delivery connection device is connected to the mosquito-killing potion atomizing and pressurizing device, and is provided to transport the mosquito-killing potion atomizing and pressurizing generated by the mosquito-killing potion atomizing and pressurizing device; At least one diffuser air outlet device is connected to the other end of the conveying connection device or connected to the diffuser air outlet of each unit connected in series through the conveying connection device of another unit, and provides the pressurized atomized atomized delivery through the conveying connection device The spraying and spreading of anti-mosquito potions; At least one control circuit device is connected between the mosquito-killing potion atomizing and pressurizing device and the diffusion air outlet device or is connected in series to the diffusion air outlet device of each unit through the control circuit device of another unit, and provides control of the The diffuser device releases the atomized and pressurized anti-mosquito syrup or turns off the atomized and pressurized anti-mosquito syrup; Thereby, the atomizing and pressurizing device of the anti-mosquito medicine is used to connect the at least one diffuser through the at least one conveying connecting device or through another unit, the conveying connecting device is connected in series with another unit and the diffuser, to pressurize the atomization The anti-mosquito potion is delivered to each location space. According to the mosquito-killing fan system described in the first item of the scope of patent application, the diffusion air outlet device is an unpowered diffusion air outlet device or a power diffusion air outlet device. For the mosquito-killing fan system described in item 2 of the scope of patent application, wherein the mosquito-killing medicine atomizing and pressurizing device is provided with a casing on the outside and a plurality of air inlets in the lower section, and the casing is provided with Provide at least one mosquito-killing potion device containing mosquito-killing potion. The upper end of the mosquito-killing potion device is provided with at least one atomizing device. In order to provide capillary phenomenon, at least one cotton swab is provided in the mosquito-killing potion device to provide anti-mosquitoes. The medicine is delivered to the atomization device. The opposite side of the device for containing the anti-mosquito medicine is provided with a motor inhalation and pressurization device for boosting the atomized anti-mosquito medicine, and the housing is provided with an inhalation and pressurization device connected to the motor A control device, the motor inhalation and pressurization device is connected with at least one internal conveying device for delivering the pressurized atomized mosquito killer liquid. The mosquito-killing fan system described in item 3 of the scope of patent application, wherein the motor suction and pressure-boosting device of the mosquito-killing medicine atomizing and boosting device includes an air pump and a motor connected to each other, and the air pump sucks in Atomize mosquito killer potion and provide pressurization. For the mosquito-killing fan system described in item 3 of the scope of patent application, wherein the upper section of the casing of the mosquito-killing medicine atomizing and pressurizing device has an air cavity to provide the motor to be installed in the upper section of the casing when the water is submerged The air suction and pressure boosting device forms an air bag with the air pockets, which can prevent water infiltration and protect the motor suction and pressure boosting device. For the mosquito-killing fan system described in item 2 of the scope of patent application, wherein the unpowered diffusion air outlet device of the diffusion air outlet device is provided with a housing on the outside, and an inlet connected to the conveying connection device is provided inside the housing An air device and an air outlet device communicating with the air inlet device. The air outlet device is connected with a motor control device. The upper section of the housing is provided with an air pocket to prevent water ingress and protect the motor control device. The motor control device includes a connected An electromagnet and a valve are used to pull the gate valve through the electromagnet to provide a device for releasing and closing the air outlet. For the mosquito-killing fan system described in item 2 of the scope of patent application, wherein the power diffusion air outlet device of the diffusion air outlet device is provided with an outer shell on the outside, and an air inlet connected to the conveying connecting device is provided inside the shell The device and an air outlet device communicating with the air inlet device and connected with a motor control device. The upper section of the housing is provided with a motor diffusion air outlet device and adjacent to the air outlet device. The upper section of the housing is provided with an air cavity to prevent water ingress and protect The motor control device and the motor diffusion air outlet device include an electromagnet and a valve connected to each other. The door valve is pulled through the electromagnet to release and close the air outlet device. The mosquito-killing fan system described in item 7 of the scope of patent application, wherein the motor diffusion and exhaust device of the power diffusion and exhaust device includes a connected motor and a turbofan, and is provided in the middle and lower sections of the housing A plurality of upper layer through holes and lower layer through holes, and the turbo fan is located in the upper layer through holes. According to the mosquito-killing fan system described in item 7 of the scope of patent application, wherein the motor diffusion and air outlet device of the power diffusion air outlet device includes a motor and a fan connected to each other. The mosquito-killing blower system described in item 9 of the scope of patent application, wherein the lower end of the casing where the power diffuses the air is provided with an outwardly expanding inclined lower air outlet, and the lower end of the lower air outlet is reflexedly connected to the lower end of the casing And has a plurality of suction holes communicating with the fan.

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