CN213701078U

CN213701078U - Cleaning device for ventilating duct

Info

Publication number: CN213701078U
Application number: CN201990000283.6U
Authority: CN
Inventors: 尹炳锡; 金圣中
Original assignee: Weihai Sono Environmental Protection Technology Co ltd
Current assignee: Weihai Sono Environmental Protection Technology Co ltd
Priority date: 2019-03-15
Filing date: 2019-05-03
Publication date: 2021-07-16
Anticipated expiration: 2029-05-03
Also published as: WO2020189841A1; KR102041751B1; JP2022524894A

Abstract

The ventilating pipeline cleaning device comprises a negative pressure generating device and a first connecting part connected to the ventilating pipeline, wherein the negative pressure generating device is used for providing a second connecting part of negative pressure, and a containing part of a negative pressure conducting line is formed between the first connecting part and the second connecting part.

Description

Cleaning device for ventilating duct

Technical Field

The utility model relates to an air pipe belt cleaning device and air pipe cleaning method, more specifically say about in order to clear away the air pipe that sets up in the building in the pollution sources, more convenient inside air pipe belt cleaning device and the air pipe cleaning method of washing air pipe.

Background

A ventilator for indoor air is generally provided only for a large building such as an office or a factory, but in a residential building newly built, a ventilator for adjusting the degree of indoor air pollution is often provided in addition to a cooling/heating temperature adjusting device. Air conditioners, thermostats and the like are frequently used indoors to adjust the air temperature, however, if the indoor activity is increased, the pollution degree of the indoor air is increased, and although the air purifier can reduce partial air pollution, the purification efficiency of the air purifier is low, and the concentration of pollutants which cannot be removed by the air purifier is increased along with the accumulation of time, so that outdoor fresh air needs to be periodically supplied indoors, and an indoor air ventilation device for removing the pollution needs to be added. Moreover, when the kitchen oil smoke, a new house and an old house are used, related ventilation devices are required to be equipped.

In order to realize such ventilation function in a residential building, a method of connecting ventilation ducts to each other indoors and outdoors may be used, but unlike the ventilation duct used in a large-sized office building or a factory, since the floor height of a residential space is low and the installation of the ventilation duct becomes complicated due to a narrow space, a general ventilation duct cannot be used, and a ventilation duct having a small diameter and a flexible shape that is easy to arrange should be used.

On the other hand, if the ventilation duct is installed in such a living space, the degree of contamination inside the ventilation duct increases if the ventilation duct is used for a long period of time. Ventilation using a contaminated ventilation duct is obviously not satisfactory for users who want clean outdoor air, but rather results in a more contaminated supply of air to the room. In order to achieve good ventilation, it is necessary to ensure that the ventilation duct is in a clean or sanitary state, and the pollutants inside the ventilation duct should be removed periodically.

But there is a lack of effective cleaning method for the inside of the ventilation duct in real life. Large buildings or factories are cleaned by manpower or robots, but household ventilating ducts have the characteristics of scattered structures, too small volume and complex layout. Although there is a common understanding of the need to frequently clean ventilation ducts and the necessity to replace them, the problem is that there is no apparatus and method for effectively cleaning ventilation ducts of residential buildings.

Although a method of inserting a cleaning ball into a vent hole to blow air has been described, moving the cleaning ball inside the ventilation duct cannot effectively remove substances such as dust and sludge adhered to the ventilation duct. In addition, after the cleaning ball is used, a considerable amount of pollutants still remain in the ventilation duct, and the method is not suitable for cleaning the ventilation duct of a residential building with long residence time.

SUMMERY OF THE UTILITY MODEL

The utility model relates to a clear away the pollution sources in the air pipe that sets up in the building, for the convenient inside washing that carries on air pipe, provide air pipe belt cleaning device and air pipe cleaning method.

The technical scheme of the utility model as follows:

a cleaning device for a ventilation pipeline comprises a negative pressure generating device and a first connecting part connected to the ventilation pipeline, wherein the negative pressure generating device is provided with a second connecting part for providing negative pressure, and a containing part for forming a negative pressure conducting line is arranged between the first connecting part and the second connecting part.

In addition, the negative pressure generating device can directly provide the negative pressure to the second connecting part, and can also indirectly provide the negative pressure to the second connecting part through the closed space.

In the above cleaning device for the ventilation duct, the receiving portion further includes a main body portion having a closed space formed therein, and the second connecting portion is provided with an open port on one side thereof, and the open port is exposed in the closed space of the main body portion for obtaining the negative pressure provided by the negative pressure generating device.

The ventilating duct cleaning device comprises a main body part and a negative pressure generating device, wherein the main body part comprises a support part connected with the negative pressure generating device, a rubber sealing gasket is arranged at an outer ring port at the joint of the support part and the negative pressure generating device, and after the negative pressure generating device is connected with the support part, a closed space can be generated in the main body part.

In the above cleaning device for a ventilation duct, the height of the negative pressure generating port of the negative pressure generating device is lower than the height of the storage capacity of the storage portion, and the main body is formed in an L shape.

In the cleaning device for the ventilation duct as described above, the cleaning material is an irregular-shaped fabric.

In the above-described ventilation duct cleaning device, the cleaning material passes through the ventilation duct, and the length of the washing area occupied by the cleaning material in the ventilation duct is 1.4 times or more and 3.7 times or less of that of the ventilation duct.

In the ventilating duct cleaning device, when the diameter of the ventilating duct is less than 80mm and the length of the ventilating duct is less than 50m, the amount of water injected at one time is less than 5L.

The ventilating duct cleaning device is characterized in that the ventilating duct is made of resin materials, the outer shell of the ventilating opening is of an uneven corrugated structure, the internal structure of the ventilating opening is flat, and the negative pressure provided by the negative pressure generating device enables the vacuum degree inside the ventilating duct to reach 1500-7000 mmH 20.

In the above-described ventilation duct cleaning device, the negative pressure generating device may determine the time for which the use is stopped in advance after the washing water is sucked.

In the above cleaning device for ventilation duct, the negative pressure generating device is connected to the second connecting portion to directly supply the negative pressure, and the connecting portions of the first connecting portion and the second connecting portion with the receiving portion are provided with switches.

In addition, in order to solve the above problems, the present invention provides a cleaning method for a cleaning device of an air duct, which comprises a negative pressure generating device for generating a negative pressure to suck cleaning water, which is a cleaning water supplying stage; after the washing water supply stage, sucking the washing component with irregular fabric form from the other end of the ventilating duct by the negative pressure generator under the suction of the negative pressure at one end of the ventilating duct, which is a washing material supply stage; after the cleaning material supply stage, cleaning water and cleaning materials are used for cleaning the inner wall of the ventilation pipeline through the negative pressure generating device under the state of negative pressure at one end of the ventilation pipeline and are recovered into a recovery component along the ventilation pipeline, and the cleaning water and cleaning material recovery stage is realized.

In the washing water supply stage, when the diameter of the ventilation pipeline is below 80mm and the length of the ventilation pipeline is below 50m, the primary water injection amount can be below 5L.

The ventilation duct is made of a resin material, and the housing of the ventilation opening has a corrugated structure with concave and convex portions, and has a flat internal structure.

In the cleaning water supply stage, the cleaning material supply stage and the cleaning water and cleaning material recovery stage, the negative pressure provided by the negative pressure generating device can enable the vacuum degree in the ventilating duct to reach 1500-7000 mmH 20.

In the above-mentioned washing material supplying stage, the washing material passes through the ventilation duct, and the washing area length occupied by the washing material in the ventilation duct is more than 1.4 times and less than 3.7 times of the ventilation duct.

In addition, the negative pressure generating device can determine the stop time in advance after the washing water is sucked.

In this case, after the washing water and washing material recovery stage, the negative pressure generating device is started to dry the washed ventilation duct, which is the ventilation duct drying stage.

The utility model discloses for prior art gained beneficial effect lie in: the utility model discloses air pipe belt cleaning device not only makes the pollution sources who eliminates in the air pipe become easy, has improved the efficiency of cleaing away the pollution sources moreover.

Drawings

The aspects and advantages of the present application will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the invention.

In the drawings:

fig. 1 is a schematic structural view for explaining a ventilation system of embodiment 1;

fig. 2 is an oblique view of the ventilation duct cleaning device of embodiment 1;

fig. 3 is a schematic structural view of a recovery member of the ventilation duct cleaning apparatus;

fig. 4 is a schematic structural view of the main body of the ventilating duct cleaning device with the negative pressure generating device removed;

FIG. 5 is a schematic structural diagram of the negative pressure generating device;

fig. 6 is a schematic structural view of a duct of the ventilation duct cleaning apparatus;

fig. 7 is a cleaning flowchart of the ventilation duct cleaning device;

fig. 8 is a flow chart of cleaning of the ventilation duct cleaning apparatus according to embodiment 2;

Detailed Description

Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. It should be noted that these embodiments are provided so that this disclosure can be more completely understood and fully conveyed to those skilled in the art, and the present disclosure may be implemented in various forms without being limited to the embodiments set forth herein.

Example 1

Fig. 1 is a schematic structural view of a ventilation system, and a ventilation duct cleaning device of the present embodiment is used for cleaning a ventilation duct 130 in a ventilation system 90, wherein the ventilation system 90 comprises a ventilation device 100 and the ventilation duct 130.

Further, the ventilation device 100 is installed on the ceiling of the working room as, a ventilation duct 130 is provided at one end of the interface area 110 of the ventilation device 100, and an outdoor sealing cover is connected to the other end of the ventilation device. The outdoor closure includes a supply outdoor closure 121 and a discharge outdoor closure 122, which are opened to supply outdoor air into a living space of a room while discharging indoor air to the outside of the room.

Further, the ventilation duct 130 includes a ventilation duct 131 for air supply and a ventilation duct 132 for air exhaust, and referring to fig. 1 in particular, the ventilation duct 130 is connected to each room in the room, such as a living room, a bathroom, a bedroom, etc.

Further, one side of the ventilation duct 130 passes through the ceiling of each room in the room, supplies outdoor air supplied from the ventilation apparatus 100 to the room, and sucks indoor air, and is connected to an indoor flap, which is divided into a supply indoor flap 141 and a discharge indoor flap 142, for being discharged to the outside through the ventilation apparatus 100. Of course, air supply and air exhaust can be performed simultaneously through one sealing cover, but the preset purpose of the implementation of the invention is not needed to be repeated.

In this embodiment, various pipes or ducts may be used for the ventilation duct 130, and a non-toxic PVC material having strong chemical resistance, a hose for facilitating construction, or the like may be used, but in this embodiment, in order to prevent the ventilation duct 130 from being deformed, an uneven corrugated structure or a corrugated pipe structure is used for the outer circumferential surface of the ventilation duct 130, and in order to improve the cleaning performance, the inner structure is as flat as possible, and even if fine uneven waves exist inside, the size of the uneven waves is smaller than that of the outer circumferential surface thereof.

Preferably, the ventilation duct 130 is an inner diameter duct having a diameter of 50 to 160mm, and when the inner diameter of the ventilation duct 130 is less than 50mm, the ventilation duct 130 is easily clogged with laundry in a fabric form having an irregular shape, and when the inner diameter is more than 160mm, the power requirement for the movable cleaning device in the ventilation duct 130 is large, and the connection between the cleaning device and the duct made of a resin material is difficult.

Referring still to fig. 1, in the construction of a building, the ventilation apparatus 100 and the plurality of ventilation ducts 130 connected to the ventilation apparatus 100 are generally installed on the ceiling of the building, and only the flaps (141, 142) are exposed in each partitioned space such as bedroom or bathroom.

Of course, the installation of the ventilation device 100 shown in fig. 1 is described only by way of example in which the ventilation device 100 is installed in living spaces such as apartments and houses, and the ventilation device 100 may be installed in other work spaces, and the ducts connecting the ventilation device 100 and the work spaces are arranged at equal lengths of 1:1 according to the division of the work spaces, and this installation is suitable for various facilities such as hospitals, schools, administrative offices, and offices other than residential buildings.

Further, when the cleaning apparatus is installed, the required ventilation amount can be determined according to the size of each divided space, and further the selection diameter of the ventilation duct 100 can be determined, and the output power of the negative pressure generating device 210 in the cleaning apparatus can be determined according to the diameter and the length of the ventilation duct 100.

When the installation mode is used in reality, the installation mode is not only suitable for living space, but also suitable for various building spaces such as commercial space, and the following describes in detail the cleaning device of the ventilating duct and the cleaning method of the ventilating duct according to the present invention with reference to the attached drawings 2-5.

Fig. 2 is an oblique view of the ventilation duct cleaning device 300, fig. 3 is a drawing of a recovery member of the ventilation duct cleaning device 300 in fig. 2, fig. 4 is a schematic structural view of a main body of the ventilation duct cleaning device 300 with the negative pressure generating device 210 removed, and fig. 5 is a schematic structural view of the negative pressure generating device 210 removed from the ventilation duct cleaning device 300 in fig. 2.

As shown in fig. 2 to 5, ventilation duct cleaning device 300 in the present embodiment includes negative pressure generating device 210, recovery member 220, and main body 200 constituting an outer frame portion.

Since the body portion 200 is an external frame structure of the present device, it may be formed in any form using various materials. Although fig. 2 shows that the connection portion and the recovery portion of the negative pressure generating apparatus 210 are at different heights, i.e., in a stepped shape, the embodiment of the present invention is not particularly limited to that.

In this embodiment, the main body 200 includes a recovery member 220 for recovering the washing object at a recovery portion, and preferably, the recovery member 220 is further provided with an opening and closing door in the form of a switch.

In addition, the main body 200 further includes a connection member connected to the recovery member 220, and the other end of the connection member is connected to the ventilation duct 130 of fig. 1. Preferably, the connecting member includes the hose 205 and the duct 230 in this embodiment.

Referring to fig. 3, the flexible tube 205 may be made of a resin material, and the guide tube 230 may be made of iron (Fe), SUS, or the like. The duct 230 includes a first connection pipe 230a and a second connection pipe 230b, the first connection pipe 230a is connected to the hose 205 at one end and is connected to the recovery member 220 at the other end, and a first open region 221 is formed at a connection position of the first connection pipe 230a and the recovery member 220. One end of the second connection pipe 230b is connected to the recovery member 220, and a second open region 222 is formed at the connection position of the second connection pipe 230b and the recovery member 220.

Further, a second connection pipe 230b connected to the second open region 222 is connected to the inner space of the recovery member 220, and is connected to the negative pressure generating device 210 through the second connection pipe 230b, the negative pressure generated by the negative pressure generating device 210 is transmitted to the inner space of the recovery member 220, and water and the cleaning member can be recovered from the first connection pipe 230a by the negative pressure.

Of course, even if the second open area 222 of the recovery member 220 is kept open, the negative pressure is not transmitted in a state where the recovery member 220 is sealed. Preferably, the second connection pipe 230b is highly supported by the upper frame surface of the main body 200, so that the main body 200 or the main body internal recovery member 220 may be prevented from being raised by vibration generated when the negative pressure generating device 210 operates.

As a further preference, the main body 200 may be formed as a frame having an L-shaped cross-sectional shape in a side direction so as to minimize a height deviation of the entire recovery member 220 and the negative pressure generating device 210 when they are installed.

Referring to fig. 4, the negative pressure generating device 210 is mounted on a bracket 201 formed at one side of the main body 200. A ring of rubber sealing gasket 203 is arranged outside the bracket part 201. When the opening/closing door of the main body 200 is closed after the negative pressure generating device 210 is mounted on the holder 201, the inside of the main body 200 is kept in a closed state.

Further, when the main body 200 is kept in the closed state, the negative pressure generated by the negative pressure generating device 210 can be easily conducted to the ventilating stage of the ventilating system 90 through the hose 205. In other words, fig. 3 shows that one side of the recovering member 220 is connected to the hose 205 by the conduit 230, and the other side of the recovering member 220 is connected to the negative pressure generating device or directly opened to be exposed to the outside. This allows the negative pressure on the other side of the recovery member 220 to be transmitted to the hose 205 and the ventilation duct 130 through the inner space of the recovery member 220. Therefore, the cleaning liquid (e.g., water) and the cleaning material (e.g., towel) provided at the other side of the ventilation duct 130 are easily recovered into the recovery member 220 by the negative pressure generated by the negative pressure generating means 210.

In this embodiment, the negative pressure generating device 210 includes a vacuum pump 211 and the like, and may further include a control unit for controlling the vacuum pump 211. As shown in fig. 4, the vacuum pump 211 may provide an external power source and operate. Of course, the vacuum pump may also be operated with an internal battery. The control part of the vacuum pump 211 can be opened and closed to control the operation of the vacuum pump 211 or adjust the magnitude of the negative pressure. The control may also interface with other interfaces to receive user instructions to control the vacuum pump 211.

Preferably, when the length of the ventilation duct 130 is less than 50 meters and the diameter is 50mm to 160mm, the power of the negative pressure generating device 210 is less than 9000 watts, and the vacuum degree inside the ventilation duct 130 is preferably maintained between 1500mmH20 and 7000mmH 20.

Experiments prove that when the vacuum degree in the ventilation pipeline 130 is less than 1500mmH20, the textile washing material cannot be recovered, the inside of the ventilation pipeline 130 is blocked by the washing material, or when the washing material is transferred under the action of negative pressure, enough collision energy or kinetic energy is not available to ensure that the inside of the ventilation pipeline 130 is clean, and the washing process needs to be repeated.

Further, it is expected that the greater the degree of vacuum in the above-mentioned ventilation duct 130, the easier the cleaning performance and the recovery of the washing material will be. However, when the vacuum degree inside the ventilation duct 130 exceeds 7000mmH20, the water first introduced to clean the duct may not sufficiently soak the inside of the ventilation duct 130, and may be withdrawn, or the ventilation duct 130 may be narrowed, thereby causing a clogging problem. Therefore, the vacuum degree inside the ventilation duct 130 is best maintained between 1500mmH20 and 7000mmH 20.

In the test process of the cleaning device, the used negative pressure generating device 210 is a vacuum pump 211, the parameters of the vacuum pump are 3600W/4.8HP, the voltage is 220V/60Hz, and the vacuum degree which can be achieved during working is 2700mmH 20. Of course, the negative pressure generator 210 can work continuously, and the cleaning water and the cleaning material can be repeatedly put into the opening of the ventilation duct 130 for 2-3 times. Furthermore, the negative pressure generating device 210 may be used for drying the ventilation duct 130 after the cleaning process is finished.

In this embodiment, the first open region 221 of the recycling member 220 may be connected to the ventilation duct 130 through the conduit 230, more specifically, through the first connection pipe 230a and the hose 205, and the second connection pipe 230b of the second open region 222 of the recycling member 220 is directly connected to the vacuum pump 211, but of course, the main body 200 may be open toward the inner sealed space.

Further, the negative pressure provided from the second open region 222 side of the recovery member 220 is transmitted into the ventilation duct 130 through the duct 230 and the hose 205, and absorbs the water and the washing material.

Further, by performing a repeated washing test using the present apparatus, it is possible to confirm the initial amount of water to be charged, and when the ventilation duct 130 having a diameter of 80mm or less is used, 5L or less of water may be used, and when the diameter is 160mm or less, 10L or less of water may be used. Tests confirm that the cleaning effect is not greatly different even if more water and cleaning materials are added at one time.

Preferably, in order to prevent the vent from being clogged, the vent is cleaned effectively, and it is confirmed through experiments that the length of the vent is optimally 50M or less.

Since the amount of washing water to be supplied may be variously changed depending on the length or diameter of the ventilation line, embodiments of the present invention are not particularly limited to one form. However, the washing water may be injected about 2 to 3 times based on the initial amount of the injected washing water, or the washing water may be repeatedly injected according to the washing state using an endoscope camera.

The cleaning flow of the ventilation duct cleaning device 300 is described below with reference to fig. 7:

the ventilating duct cleaning apparatus 300 generates negative pressure by the negative pressure generating apparatus 210 to suck cleaning water, which is a cleaning water supplying stage (S1000); after the washing water supply stage, the negative pressure generator 210 sucks the washing member with irregular fabric shape from the other end of the ventilation duct 130 by the negative pressure suction at one end of the ventilation duct 130, which is the washing material supply stage (S2000); after the cleaning material supplying stage, the negative pressure generating device 210 is used to clean the inner wall of the ventilation duct 130 by the cleaning water and the cleaning material under the negative pressure state at one end of the ventilation duct 130, and the cleaning water and the cleaning material are recovered into the recovery member 220 along the ventilation duct 130, which is a cleaning water and cleaning material recovery stage (S3000); after the washing water and washing material recovery stage, the negative pressure generator 210 dries the washed ventilation duct 130, which is a ventilation duct drying stage (S4000).

For a clearer understanding of the method of using the ventilating duct cleaning device 300, the following will specifically describe the working principle of the ventilating duct cleaning device 300 with reference to fig. 2:

first, the negative pressure generating device 210 is activated, and in a state where a negative pressure is generated at one end of the ventilation duct 130, a washing water supplying stage (S1000) may be performed, and washing water is sucked into the other end of the ventilation duct 130, and a certain time difference may be set between the supply of the washing water and the supply of the washing material in time series. That is, the washing water is supplied to the ventilation duct 130 first, so that the entire ventilation duct 130 can spray the water and soak the dust, dirt, and the like.

Further, in the washing water supply stage, if the diameter of the ventilation duct 130 is 80mm or less, the initial input amount of water may be 5L or less, and if the diameter of the ventilation duct 130 is 160mm or less, the initial input amount of water may be 10L or less. Further, in order to prevent the ventilation duct 130 from being clogged, the length of the ventilation duct 130 is preferably 50m or less in order to effectively clean the ventilation duct 130.

Then, after the washing water supply stage (S1000), the washing member having an irregular fabric shape is sucked into the other end of the ventilation duct 130 in a state where a negative pressure exists at one end of the ventilation duct 130, and the washing material supply stage (S2000) is performed. Preferably, the shape of the washing material is an amorphous shape, and the washing efficiency of the inside of the ventilating system 90 can be increased in a state that the washing material is wetted with washing water or the like.

In this embodiment, before the washing member is put in, the ventilating duct 130 is sufficiently soaked with the washing water, and the washing water is continuously supplied to a degree sufficient to generate a water flow of the washing water, at this time, a warm flow is generated inside the ventilating duct 130, and is uniformly soaked in the ventilating duct 130, and then the negative pressure is removed, so that a certain flowing water environment can be created in the duct, and at this time, an unfixed washing material, such as a towel, is put in, so that the dust or dirt in the duct can be washed by the water and the washing material remaining in the ventilating duct 130 under the action of friction force.

Preferably, the cleaning material put into the ventilation duct 130 should be maintained in an amorphous shape. After the device tests the cleaning materials in various forms, if the cleaning materials have certain regular forms, such as spherical or polygonal shapes, even if the materials are soft, areas which can not be cleaned still can be generated. As a result of the observation of the test results, the cleaning material can be clearly divided into the cleaning region and the other portions during the cleaning process inside the ventilation duct 130, and it can be confirmed that the entire area of the cleaning material cannot be completely used for cleaning.

Further, the cleaning material having a regular shape is not easy to clean, dehydrate, or dry. However, when a cleaning material such as an amorphous cloth or a towel is used, the cleaning material is transferred into the ventilation duct 130 by negative pressure, and the cleaning material can be continuously changed along the trajectory form of the ventilation duct 130, so that a long-term washing area can be formed along the longitudinal direction of the ventilation duct 130, and the cleaning area can be sufficiently enlarged.

Furthermore, it was experimentally verified that, in the above-described cleaning material supplying stage (S2000), the cleaning material should pass through the above-described ventilation duct 130 and occupy a cleaning area length inside the ventilation duct 130 which is 1.4 times or more and 3.7 times or less the length of the ventilation duct 130.

When the length of the cleaning area is 1.4 times or less, the cleaning effect of the cleaning material is confirmed by an endoscope or the like, and after the same cleaning material is cleaned for 3 times or more, it is easily recognized by endoscopic photography that 10 contaminated areas (micro-measurement areas) having an area of 30mm or more are found in an interval of 1 m in the ventilation duct 130, and the cleaning effect is insufficient. On the other hand, when the length of the washing zone is 3.7 times or more the length of the ventilation duct 130, the washing member is easily clogged in the ventilation duct 130, resulting in difficulty in recovery.

It is finally confirmed that the cleaning material supplied in the above-mentioned cleaning material supply stage (S2000) should occupy a cleaning region length within the ventilation duct 130 which is 1.4 times or more and 3.7 times or less as long as the ventilation duct 130, and at this time, after the cleaning material is cleaned once, the number of contaminated regions (micro tube regions) having an area of 30mm or more is found to be less than 3 within a range of 1 m of the ventilation duct 130, so that a satisfactory cleaning effect can be obtained.

In addition, between the washing water supply stage (S1000) and the washing material supply stage (S2000), the negative pressure generating device 210 may be controlled to stop operating for a certain period of time, so that the water is sufficiently soaked in the pollutants, thereby improving the washing effect.

The negative pressure generating device 210 in this embodiment may be used to dry the washed ventilation duct 130 in addition to sucking wash water or wash material.

After the washing water and washing material recovery stage (S3000) is completed, the negative pressure generator 210 is activated to dry the washed ventilation duct 130 (S4000).

Further, the above-mentioned washing water supply stage (S1000), washing material supply stage (S2000) and washing water and washing material recovery stage (S3000) may be repeatedly performed according to the contamination condition of the ventilation duct 130. In order to confirm the cleaning state of the ventilation duct 130, an endoscopy stage of putting an endoscope into one end or the other end of the ventilation duct 130 may be added.

Example 2

Of course, the structure of the present ventilation duct cleaning device 300 may be various. Referring now to fig. 6, another ventilation duct cleaning apparatus 300 will be described.

Fig. 6 is another example of the duct 230 in the ventilation duct cleaning apparatus 300. Compared with the structure of fig. 3, the multiple paths of the conduit 230 of fig. 6 are connected to each other, and the conduit 230 includes a first connection pipe 230a 'for transmitting negative pressure and a second connection pipe 230 b' for guiding out water and cleaning material, and the first connection pipe 230a 'and the second connection pipe 230 b' are respectively provided with a first control switch 231a and a second control switch 231b inside thereof, and the opening or closing of the respective pipes can be controlled by the control switches.

Further, when the negative pressure generating means 210 supplies the negative pressure, the first control switch 231a is turned on to supply the negative pressure through the ventilation duct 130 for a certain period of time, and when the water or the cleaning material is recovered to the recovering member 220, the first control switch 231a is turned off and the second control switch 231b is turned on.

This method may find an appropriate time setting through various experiments, and particularly, in order to determine whether water or a cleaning material is recovered, the on time of the first control switch 231a and the on time of the second control switch 231b may be effectively controlled using a sensor or the like, but the embodiment of the present invention is not particularly limited to one form. For example, when the cleaning material is applied for a certain time, the negative pressure supply channel can be blocked while the discharge channel of the water and the cleaning material is opened.

Referring to fig. 8, fig. 8 is a flow chart of the cleaning of the ventilation duct cleaning device 300 according to the present embodiment. The duct 230 is the duct 230 shown in fig. 6.

Unlike embodiment 1, in embodiment 2, only the first control switch 231a is turned on before the washing water supply stage (S1000) and the washing material supply stage (S2000), so as to provide negative pressure to the ventilation duct 130 for a certain time, thereby providing a power for transferring the washing water and the washing material; then, the first control switch 231a is turned off and the second control switch 231b is turned on before the washing water and the washing material are recovered to the recovery member 220 by the negative pressure, so that the washing water and the washing material are recovered by inertia.

Of course, this method may find a suitable time through various experiments, and particularly, in order to determine whether the recovery of water or the cleaning material is complete, a sensor or the like may be further provided, and the first control switch 231a and the second control switch 231b may be effectively controlled.

The above description is only a preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention should be covered by the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. The ventilation pipeline cleaning device is characterized by comprising a negative pressure generating device (210), a first connecting part connected to a ventilation pipeline (130), a second connecting part for providing negative pressure by the negative pressure generating device (210), and a containing part forming a negative pressure conducting line between the first connecting part and the second connecting part, wherein the containing part can recover water and cleaning materials absorbed from the outside of the ventilation pipeline (130) by the negative pressure generated by the negative pressure generating device (210).

2. A cleaning device for ventilation ducts according to claim 1, characterized in that said negative pressure generating device (210) can provide negative pressure to the second connecting portion directly or indirectly through the enclosed space.

3. The cleaning device for the ventilation duct according to claim 2, wherein the receiving portion further comprises a main body (200) forming a sealed space therein, the second connecting portion is provided with an opening on one side, and the opening is exposed in the sealed space of the main body (200) for obtaining the negative pressure provided by the negative pressure generating device (210).

4. The cleaning device for the ventilation duct according to claim 3, wherein the main body (200) comprises a bracket portion (201) connected with the negative pressure generating device (210), a rubber gasket is arranged at an outer ring port at a connection position of the bracket portion (201) and the negative pressure generating device (210), and after the negative pressure generating device (210) is connected with the bracket portion (201), a closed space can be generated inside the main body (200).

5. The cleaning device for ventilation ducts according to claim 4, characterized in that the negative pressure generating port of the negative pressure generating device (210) is lower than the receiving capacity of the receiving portion, and the main body (200) is formed in an L shape.

6. A cleaning device for ventilation ducts according to claim 1, characterized in that said cleaning material is an irregular shaped fabric.

7. The cleaning device for the ventilation duct according to claim 6, wherein the cleaning material passes through the ventilation duct (130), and the cleaning material occupies a washing area in the ventilation duct (130) with a length 1.4 times or more and 3.7 times or less than that of the ventilation duct (130).

8. The cleaning device for the ventilation duct according to claim 1, characterized in that the ventilation duct (130) has a diameter of 80mm or less and a length of 50m or less, and the amount of water injected at one time is less than 5L.

9. The cleaning device for the ventilation duct according to claim 8, wherein the ventilation duct (130) is made of resin, the outer shell of the ventilation opening is of an uneven corrugated structure, the internal structure of the ventilation opening is flat, and the negative pressure provided by the negative pressure generating device (210) can enable the vacuum degree in the ventilation duct (130) to reach 1500-7000 mmH 20.

10. A cleaning device for ventilation ducts according to claim 1, characterized in that said negative pressure generating means (210) is connected to the second connecting portion for directly supplying the negative pressure, and the connecting portions of the first and second connecting portions and the receiving portion are provided with switches.