JP7432823B2 - dust collector - Google Patents

Description

The present invention relates to a dust collector that removes dust contained in air introduced indoors from outdoors.

BACKGROUND ART Dust collectors that remove dust contained in air introduced indoors from outdoors are conventionally known (for example, see Patent Document 1). These conventional dust collectors are often connected via ducts to a ventilation system that supplies outdoor air indoors, and are generally installed in the ceiling in order to secure indoor space. will be installed in

JP2019-173985A

However, with such conventional dust collectors, dust accumulates inside the device, causing problems such as a decrease in dust collection capacity or a decrease in ventilation capacity due to clogging, so it is necessary to periodically replace the dust collector. It was necessary to clean and remove the accumulated dust. Specifically, a user of a conventional dust collector climbs onto a step stool to reach the ceiling, opens the inspection door, takes out the dust collector installed in the ceiling, and cleans it using water, etc. This will remove the attached dust. Then, after the dust collector had sufficiently dried, the user had to return it to the attic.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned conventional problems, and an object of the present invention is to provide a dust collector that can improve cleaning and maintenance of the inside of the device.

In order to achieve this objective, the dust collector according to the present invention removes dust contained in outdoor air sucked in from the suction port and sends it out from the air outlet. The dust collector includes a dust collector that collects dust contained in outdoor air, a first injection part that is disposed between the dust collector and the air outlet, and that blows out compressed air toward the dust collector. a second injection part that is disposed between the suction port and the duct that communicates with the outdoors, and blows out compressed air that flows toward the outdoors in the duct; a control part that controls the operation of the first injection part and the second injection part; , is provided. The control unit operates the first injection unit and the second injection unit to control the flow rate of the compressed air blown out from the first injection unit when the dust collected in the dust collection unit is discharged outdoors from the suction port. It is characterized by controlling the amount to increase gradually, thereby achieving the initial objective.

According to the present invention, it is possible to provide a dust collector that can improve cleaning and maintenance inside the device.

A side view showing a ventilation system having a dust collector according to Embodiment 1 of the present invention Side sectional view showing the configuration of a dust collector used in a ventilation system Planar sectional view showing the internal structure of the dust collector A perspective view of the first injection part that constitutes the dust collector Side sectional view of the second injection part that constitutes the dust collector Diagram showing the connection between the control unit of the dust collector and each device Flowchart diagram of ventilation mode and cleaning mode in ventilation system (a) Plan view showing a state in which the third airflow from the first injection part is closer to the center, (b) Plan view showing a state in which the third airflow from the first injection part is closer to the right, (c) First injection part Plan view showing the third airflow from the left side

The dust collector according to the present invention removes dust contained in outdoor air sucked in through the suction port and sends it out from the air outlet. The dust collector includes a dust collector that collects dust contained in outdoor air, a first injection part that is disposed between the dust collector and the air outlet, and that blows out compressed air toward the dust collector. a second injection part that is disposed between the suction port and the duct that communicates with the outdoors, and blows out compressed air that flows toward the outdoors in the duct; a control part that controls the operation of the first injection part and the second injection part; , is provided. The control unit operates the first injection unit and the second injection unit to control the flow rate of the compressed air blown out from the first injection unit when the dust collected in the dust collection unit is discharged outdoors from the suction port. Controlled to increase gradually.

According to this configuration, the compressed air injected from the first injection part can remove the dust attached to the dust collection part, and the removed dust is generated by the compressed air injected from the second injection part. It can be discharged outdoors by following the flow toward the outdoors. In other words, it is possible to obtain a dust collector that can improve cleaning and maintenance performance inside the device. At this time, in the dust collector, by gradually increasing the flow rate of the compressed air blown out from the first injection part, it is possible to remove dust attached to the dust collection part while suppressing dust from rising inside the equipment. Therefore, it is possible to suppress dust from scattering toward the indoor side from the dust collecting section.

Further, in the dust collector according to the present invention, the first injection part has a pair of nozzles arranged to face each other across the air flow passage area of the dust collection part, and the first jet is blown from one of the nozzles. The airflow is configured to collide with a second airflow blown out from the other side of the nozzle to generate a third airflow toward the dust collecting section. Preferably, the control unit controls the flow rate of the third airflow to gradually increase. By doing this, in the dust collector, a third airflow is generated that is blown perpendicularly to the airflow passing surface of the dust collection section, and the third airflow containing the removed dust is sent to the suction port (second injection section). ) side, so that floating up inside the device is further suppressed, and the air can be efficiently discharged outdoors from the suction port.

Furthermore, in the dust collector according to the present invention, the second injection part blows out the compressed air flowing toward the outdoors in the duct at a constant flow rate, thereby generating an induced airflow from the suction port toward the outdoors. preferable. By doing this, the dust collector can generate a flow rate larger than the flow rate of the compressed air injected from the second injection part, so that the dust removed by the compressed air injected from the first injection part can be removed. can be discharged outdoors more reliably.

Further, in the dust collector according to the present invention, the air outlet is configured to communicate with a blower for taking outdoor air indoors or a ventilation device having a blower. This makes it possible to provide a ventilation system that purifies outdoor air and supplies it indoors.

Embodiments of the present invention will be described below with reference to the drawings.

(Embodiment 1)
First, a ventilation system 40 according to Embodiment 1 of the present invention will be outlined with reference to FIGS. 1, 2, and 3. FIG. 1 is a diagram showing the configuration of a ventilation system 40. FIG. 2 is a diagram showing the configuration of the dust collector 2. As shown in FIG. FIG. 3 is a plan sectional view showing the internal structure of the dust collector 2. As shown in FIG.

In the ventilation system 40 according to the present embodiment, in a typical house, the dust collector 2 is incorporated into a ventilation device that sends air from the outdoors 42 into the indoor room 41, and as shown in FIG. The equipment is installed at the back. In the ventilation system 40, devices are arranged in this order from the outdoor 42 side: an outdoor hood 1, a dust collector 2, a blower 3, and an outlet grill 4. The outdoor hood 1 and the dust collector 2 are communicated by a first duct 5A, the dust collector 2 and the blower 3 are communicated by a second duct 5B, and the blower 3 and the blower grill 4 are communicated by a third duct 5C. communicated by.

In the ventilation system 40, by operating the blower 3, air from outdoors 42 flows in from the outdoor hood 1 as shown by the white arrow in FIG. Air is supplied to.

Specifically, as shown in FIG. 1, the ventilation system 40 includes an outdoor hood 1, a first duct 5A, a dust collector 2, a second duct 5B, a blower 3, a third duct 5C, A blow-off grill 4 is provided.

The outdoor hood 1 is provided on a wall or under the eaves of a house, and prevents rain or wind from entering an opening (not shown) for taking in air from the outdoors 42. In the following, the outdoor hood 1 will be described as including an opening for taking in air from outdoors 42. Note that the opening here also has the role of discharging dust from the dust collecting section 9 (see FIG. 2) when cleaning the dust collecting device 2.

The first duct 5A is a duct that communicates the outdoor hood 1 and the dust collector 2.

The dust collector 2 is a device that removes dust contained in the outdoor air 42 introduced from the outdoor hood 1. Details of the dust collector 2 will be described later.

The second duct 5B is a duct that communicates the dust collector 2 and the blower 3.

The blower 3 is connected to a second duct 5B that communicates with the dust collector 2, and rotates blades using a motor to generate wind (airflow). The wind (air current) generated by the blower 3 is sent out from the outlet grille 4 to the indoor room 41 via the third duct 5C.

The third duct 5C is a duct that communicates the blower 3 and the outlet grille 4.

The blowout grill 4 is a grill provided on the ceiling or wall of a living room or the like in the indoor room 41 so as to cover an opening for blowing out the air treated by the ventilation system 40 into the indoor room 41. In the following, the blowout grille 4 will be described as including an opening for blowing out the air treated by the ventilation system 40 into the room 41.

Next, the configuration of the dust collector 2 will be explained using FIG. 2.

The dust collector 2 is a device that has a function of removing dust from the air introduced into the device to purify the air, and a function of discharging the collected dust to the outdoors 42. Specifically, the dust collector 2 includes a casing 6, a suction port 7, an outlet 8, a dust collection section 9, a first injection section 10, a second injection section 11, and a control section 29. , and is configured with the following.

The housing 6 constitutes an outer frame of the dust collector 2. A suction port 7 and a blowout port 8 are formed on the outer peripheral side surface of the housing 6 at positions facing each other. Further, inside the housing 6, a dust collection section 9 and a first injection section 10 are formed.

The suction port 7 is an opening provided on the side surface of the casing 6, into which air from the outdoors 42 introduced from the outdoor hood 1 flows. A second injection section 11 is installed outside the suction port 7 (on the outdoor hood 1 side).

The air outlet 8 is provided on a side surface of the casing 6 opposite to the side surface on which the suction port 7 is provided, and is an opening through which air purified by the dust collector 9 flows out. An adapter 12 is installed outside the air outlet 8 (on the side of the air outlet grille 4).

The dust collector 9 is a unit that removes dust from the air introduced into the dust collector 2 and purifies the air. In this embodiment, the dust collection unit 9 performs dust collection using an electrostatic collection method. The electrostatic precipitator method uses corona discharge to charge dust in the air, and when the charged dust passes through a space where an electric field is generated, it receives Coulomb force and is attracted to the electrode plate 13, where the dust adheres. It collects dust. For this reason, the dust collecting section 9 is configured by stacking a plurality of electrode plates 13 vertically with predetermined intervals.

As shown in FIG. 3, the first injection parts 10 are arranged in pairs (two sets) facing each other across the air flow passage area of the dust collection part 9. In other words, the first injection section 10 includes a first injection section 10R and a first injection section 10L. Here, "R" and "L" attached to the reference numerals of the first injection part 10 are "R" for the one located on the right side when looking at the first injection part 10 from the suction port 7 side, The one placed on the left side was designated as "L". The first injection section 10 blows compressed air toward the dust collection section 9 when cleaning the dust collection section 9 . At this time, the first injection unit 10 blows out the compressed air so that the flow rate of the compressed air gradually increases.

The second injection part 11 is connected to the first duct 5A communicating with the outdoor hood 1, and is installed adjacent to the suction port 7. When cleaning the dust collecting section 9, the second injection section 11 blows compressed air flowing toward the outdoors 42 into the first duct 5A at a constant flow rate, thereby attracting it from the suction port 7 toward the outdoors 42. Create airflow.

The adapter 12 is provided adjacent to the air outlet 8 and is connected to a second duct 5B that communicates with the blower 3.

The control unit 29 has a function of controlling supply of compressed air to the first injection unit 10 and the second injection unit 11. It also controls the operation of the blower 3. Details of the control unit 29 will be described later. Note that for the blower 3, a separate control unit may be prepared as the ventilation system 40.

Next, the arrangement of the first injection part 10 will be explained using FIG. 3. In addition, FIG. 3 shows a state in which the dust collector 2 is in operation (a state in which air from outside is taken in, dust is removed by the dust collector 9, and purified air is sent into the room 41), and a state in which the dust collector 2 is in operation (a state in which air from outside is taken in, dust is removed by the dust collector 9, and purified air is sent into the room 41); mode).

As shown in FIG. 3, the dust collection unit 9 includes supports 14 on both left and right sides to support the electrode plates 13 that generate an electric field. The space through which the air flows is the space where the electrode plate 13 is located, and no air flows into the region of the support body 14. The first injection parts 10 are arranged in pairs on the left and right outer sides of the electrode plate 13 so as to sandwich the path (airflow passage area) of the air (processed air) passing through the electrode plate 13 . The dust collection rate of the dust collection section 9 is often not 100%, and the dust that cannot be removed is scattered downstream. However, since the processing air does not directly hit the first injection section 10, which is disposed to face the dust collection section 9 across the air flow passage area, the adhesion of dirt to the first injection section 10 is suppressed. Ru.

Next, the detailed configuration of the first injection section 10 will be explained using FIG. 4. FIG. 4 is a perspective view of the first injection section 10L that constitutes the dust collector 2. As shown in FIG.

As shown in FIG. 4, the first injection section 10L includes a first joint section 15, a pipe 16, a nozzle 17, and a rotary motor 18. The first injection part 10L has a first joint part 15 connected to one end of the pipe 16, a rotary motor 18 connected to the other end of the pipe 16 in a sealed manner so that air does not leak, and three parts on the side of the pipe 16. The nozzle 17 is connected. The first injection section 10L blows out compressed air from the nozzle 17 toward the dust collection section 9.

The first joint portion 15 connects a tube or the like for supplying compressed air to the pipe 16.

The pipe 16 has a hollow structure, and one end communicates with the first joint part 15. Compressed air is introduced into the pipe 16 from the outside via the first joint portion 15 .

Three nozzles 17 are connected along the vertical direction (longitudinal direction) on the side surface of the pipe 16. The nozzle 17 includes a first injection port 19 at its tip, which is a circular hole through which compressed air is injected. The first injection ports 19 are arranged in two rows, and the three nozzles 17 are arranged so that the first injection ports 19 are long in the vertical direction (longitudinal direction). As a result, the first injection ports 19 are arranged in two rows in the vertical vertical direction. Note that a plurality of holes may be provided so that the holes are directly formed in the pipe 16 without using the nozzle 17, and the holes are arranged vertically in the up and down direction.

Rotary motor 18 is a stepping motor. The one-dot chain line shown in FIG. 4 is the central axis 20 of the pipe 16, and indicates an axis along the vertical up-down direction. The rotary motor 18 can rotate the pipe 16 around the central axis 20, and can change the direction of jet flow (first air flow 30 described later) jetted from the first jet port 19.

In the first injection part 10L, as shown by the white arrow in FIG. 4, when compressed air is supplied from the first joint part 15, the compressed air passes through the inside of the pipe 16 and is injected from the first injection port 19. Note that the compressed air is obtained by compressing air using a compressor, and the pressure is approximately 0.1 MPa to 0.7 MPa.

Although the first injection section 10L has been described here, the first injection section 10R is also the same except that it has a laterally symmetrical configuration with the first injection section 10L, so the explanation will be omitted.

Next, the detailed configuration of the second injection section 11 will be explained using FIG. 5. FIG. 5 is a side sectional view of the second injection section 11 that constitutes the dust collector 2. As shown in FIG.

As shown in FIG. 5, the second injection section 11 includes a second joint section 21, an outer cylindrical section 22, an inner cylindrical section 23, and a second injection port 24. The second injection part 11 includes an outer cylindrical part 22 to which the second joint part 21 is connected, and an inner cylindrical part 23 inside thereof.

The second joint portion 21 is a portion for connecting a tube or the like for supplying compressed air to the outer cylindrical portion 22.

The outer cylindrical portion 22 is provided on the side surface of the housing 6 in which the suction port 7 is provided. Further, a second joint part 21 is connected to the outer cylindrical part 22, and compressed air is introduced from the outside via the second joint part 21.

The inner cylindrical portion 23 has a penetrating cylindrical shape, and one end communicates with the first duct 5A, and the other end communicates with the suction port 7 on the side surface of the housing 6. The inner cylindrical portion 23 can allow air taken in from the outdoors 42 to pass through when the blower 3 is operated. On the other hand, the inner cylindrical part 23 can allow air to pass from the suction port 7 side to the outdoor hood 1 side when cleaning the dust collecting part 9.

The second injection part 11 is installed adjacent to the suction port 7, and on the suction port 7 side of the second injection part 11, a second injection part 11 is provided with a slight gap between the outer cylindrical part 22 and the inner cylindrical part 23. Two injection ports 24 are provided. In the second injection part 11, compressed air is injected into the first duct 5A from the second injection port 24.

The second injection port 24 is arranged so as to surround the suction port 7, and has a ring-shaped slit. Note that the end shape of the inner cylindrical portion 23 has a trumpet-shaped opening that widens toward the suction port 7 side.

In the second injection part 11, when compressed air is supplied from the second joint part 21, as shown by the white arrow in FIG. As shown by the black arrow, it is bent along a trumpet-like shape due to the Coanda effect, and is injected toward the outdoor hood 1 (outdoor 42) inside the first duct 5A. At this time, surrounding air is attracted, and a flow rate larger than the flow rate of the compressed air supplied from the second joint part 21 flows backward in the first duct 5A, and is sent out from the outdoor hood 1 to the outdoors 42.

Next, the configuration of the control section 29 will be explained using FIG. 6. FIG. 6 is a diagram showing the connection between the control unit 29 of the dust collector 2 and each device. In FIG. 6, the connection between the control unit 29 and each device is shown by dotted lines, and the flow of compressed air is shown by solid lines.

As shown in FIG. 6, in the dust collector 2, the compressed air supplied from the compressor 25 flows through the gate valve 26, the pressure reducing valve 27, and the flow rate adjustment valve 28 in this order, and flows through the pair of first injection parts 10 (first injection part 10). The first injection section 10R and the first injection section 10L are respectively sent out. In the dust collector 2 , compressed air supplied from the compressor 25 flows through the gate valve 26 and the pressure reducing valve 27 in this order, and is sent to the second injection section 11 .

Here, the gate valve 26 is a valve that supplies or stops compressed air from the compressor 25 by opening and closing operations. Further, the pressure reducing valve 27 is a valve that reduces the pressure of the compressed air that has passed through the gate valve 26 to a predetermined pressure. Further, the flow rate adjustment valve 28 is a valve that adjusts the flow rate of the compressed air that has passed through the pressure reducing valve 27 depending on the degree of opening of the valve.

The control unit 29 is connected by wire or wirelessly between the blower 3, the rotary motor 18, the gate valve 26, and the flow rate adjustment valve 28, respectively. Then, the control unit 29 issues commands to the blower 3 to start and stop operation. Further, the control unit 29 issues a command to the rotary motor 18 for rotational operation. The control unit 29 then issues commands to open and close the gate valve 26 to control supply or stop of compressed air. Further, the control unit 29 issues an opening/closing command to the flow rate regulating valve 28 including the opening degree.

Each device (blower 3, rotary motor 18, gate valve 26, flow rate adjustment valve 28) executes its respective operation based on commands (control signals) from the control unit 29.

The ventilation system 40 as described above has a ventilation mode and a cleaning mode. The ventilation mode is a state in which the blower 3 is operated to purify outdoor air 42 and supply it to indoor air 41. The cleaning mode is a state in which the operation of the blower 3 is stopped, dust attached to the dust collecting section 9 is removed, and the dust is discharged to the outdoors 42.

If the dust collector 2 continues to operate in the ventilation mode, dust will gradually accumulate in the dust collector 9, resulting in a decrease in dust collection performance or a decrease in air volume due to dust clogging. Therefore, the control section 29 operates to periodically stop the blower 3 and shift to a cleaning mode in which compressed air is supplied to the first injection section 10 and the second injection section 11. .

Next, the operation of the ventilation mode and cleaning mode in the dust collector 2 will be explained using FIG. 7. FIG. 7 is a flowchart diagram of the ventilation mode and cleaning mode in the ventilation system 40.

In the ventilation system 40, when the ventilation system 40 is operated, it becomes a ventilation mode, the blower 3 is operated, and the air from the outdoors 42 continues to be supplied to the indoors 41.

Then, in the ventilation system 40, when a preset time has elapsed, the mode shifts to the cleaning mode.

In the ventilation system 40, when shifting to the cleaning mode, the control unit 29 stops the blower 3 and opens the gate valve 26. As a result, compressed air flowing toward the outdoors 42 is injected from the second injection part 11 into the first duct 5A, and an induced airflow is generated from the suction port 7 toward the outdoors 42. As a result, in the first duct 5A, a reverse airflow is generated from the indoor air 41 toward the outdoor air 42.

Next, the control unit 29 turns on the rotary motor 18 and adjusts the flow rate using the flow rate adjustment valve 28 according to the angle of the nozzle 17. This control will be explained using FIG. 8. FIG. 8(a) is a plan view showing a state in which the third airflow 32 from the first injection part 10 is closer to the center. FIG. 8(b) is a plan view showing a state in which the third airflow 32 from the first injection part 10 is on the right side. FIG. 8(c) is a plan view showing a state in which the third airflow 32 from the first injection part 10 is on the left side. Here, in FIG. 8, the jet jetted from the first jetting port 19 of the first jetting section 10R is referred to as a first airflow 30, and the jet jetted from the first jetting port 19 of the first jetting section 10L is referred to as a second airflow 31. do. Then, the airflow in which the first airflow 30 and the second airflow 31 are combined is defined as a third airflow 32. Note that the third airflow 32 is the same as the first airflow 30 and the second airflow 31 considered by combining vectors.

In the case of FIG. 8A, the control section 29 controls the first injection section 10R and the first injection section 10L so that the first airflow 30 and the second airflow 31 collide near the center in the left-right direction of the dust collection section 9. Adjust the angle. When the same amount of compressed air is injected from either side, the third airflow 32 passes through the airflow passage surface 9a of the dust collection section 9 (the dust collection section 9 The air flows in a direction perpendicular to the side surface facing the blow-off port 8) and flows toward the suction port 7 (second injection part 11).

In the case of FIG. 8(b), the control unit 29 controls the angle between the first injection part 10R and the first injection part 10L so that the position where the first airflow 30 and the second airflow 31 collide is on the first injection part 10R side. Adjust. In this case, by increasing the flow rate of the second air flow 31 than the first air flow 30, the third air flow 32 can be arranged in the dust collection part 9 on the right side when the dust collection part 9 is viewed from the suction port 7 side. The airflow becomes perpendicular to the airflow passing surface 9a and flows toward the second injection part 11.

In the case of FIG. 8(c), the control unit 29 controls the angle between the first injection part 10R and the first injection part 10L so that the position where the first airflow 30 and the second airflow 31 collide is on the first injection part 10L side. Adjust. In this case, by increasing the flow rate of the first air flow 30 than the second air flow 31, the third air flow 32 can be arranged in the dust collection part 9 on the left side when the dust collection part 9 is viewed from the suction port 7 side. The airflow becomes perpendicular to the airflow passing surface 9a and flows toward the second injection part 11.

By adjusting the injection angle and injection flow rate of the first injection part 10R and the first injection part 10L in this way, the third airflow 32, which is the collision between the first airflow 30 and the second airflow 31, always reaches the dust collection part 9. The flow is perpendicular to the airflow passage surface 9a and heads toward the suction port 7 (second injection part 11). By moving the position where the first airflow 30 and the second airflow 31 collide between the first injection part 10R side and the first injection part 10L side, the position where the third airflow 32 is generated can be changed from left to right. Since the dust collecting section 9 can be moved in the direction, all the dust attached to the dust collecting section 9 can be removed. At this time, the jet stream injected by the second injection part 11 creates a flow from the indoor 41 side to the outdoor 42 side through the dust collection part 9, so the removed dust rides the flow and goes to the outdoor 42 side. is discharged to. Note that the third airflow 32 does not necessarily need to be blown perpendicularly to the dust collecting section 9 . In other words, even if the injection flow rate of compressed air from the first injection part 10R and the first injection part 10L is always the same and only the angle is adjusted, the third airflow 32 will head toward the second injection part 11 side. no problem.

In addition, when adjusting the injection flow rate of the first injection part 10R and the first injection part 10, the control unit 29 gradually increases the flow rate of the third airflow 32 where the first airflow 30 and the second airflow 31 collide. controlled to do so. Specifically, when the maximum flow rate of the third air flow 32 is "100%", the control unit 29 controls the flow rate of the third air flow 32 to be "20%", "40%", "60%", and "80%". %" and "100%", and is controlled to increase by 20% at regular intervals. As a result, in the dust collector 2, compared to the case where the third air flow 32 is blown onto the dust collection part 9 at a constant flow rate (maximum flow rate) immediately after the start of cleaning, the dust collection device 2 can suppress dust from flying up inside the device. Dust attached to the portion 9 can be removed.

In the ventilation system 40, when a preset time has elapsed, the control unit 29 turns off the rotary motor 18, closes the gate valve 26 and the flow rate adjustment valve 28, and shifts to ventilation mode.

As described above, in the dust collector 2 that constitutes the ventilation system 40, the ventilation mode and the cleaning mode are periodically switched, so that it is possible to prevent dust from continuing to accumulate in the dust collection section 9, and the dust collection performance is improved. Deterioration or clogging can be prevented. In addition, the dust removed from the dust collecting section 9 can be discharged outdoors 42 by the backflow airflow generated by the second injection section 11. This cleaning mode eliminates the need for the user or the like to take out the dust collecting section 9 and clean it manually, making it possible to improve the ease of cleaning and maintenance inside the device.

Further, the same first duct 5A can be used in both the ventilation mode and the cleaning mode. Since there is no need to install separate ducts for each mode, a space-saving automatic cleaning mechanism can be achieved.

As described above, according to the dust collector 2 and the ventilation system 40 using the dust collector 2 according to the first embodiment, the following effects can be enjoyed.

(1-1) The dust collector 2 is arranged between a dust collector 9 that collects dust contained in the air outdoors 42, and between the dust collector 9 and the air outlet 8, and is directed toward the dust collector 9. a first injection part 10 that blows out compressed air; and a second injection part 10 that is arranged between the suction port 7 and the first duct 5A that communicates with the outdoors 42, and that blows out compressed air that flows into the first duct 5A toward the outdoors 42; It is configured to include an injection section 11 and a control section 29 that controls the operations of the first injection section 10 and the second injection section 11. When cleaning the dust collection section 9, the control section 29 operates the first injection section 10 and the second injection section 11 to send the dust collected in the dust collection section 9 from the suction port 7 to the outdoors 42. The discharge was controlled. Thereby, the compressed air injected from the first injection part 10 can remove the dust attached to the dust collection part 9, and the removed dust is generated by the compressed air injected from the second injection part 11. It can be discharged to the outdoors 42 along with the flow toward the outdoors 42. In other words, the dust collector 2 can improve the cleaning and maintenance performance inside the device.

(1-2) In the dust collector 2, the second injection unit 11 blows out compressed air flowing toward the outdoors 42 in the first duct 5A, thereby generating an induced airflow from the suction port 7 toward the outdoors 42. I tried to let him do it. As a result, it is possible to generate a larger flow rate than the flow rate of the compressed air injected from the second injection part 11, so that the dust removed by the compressed air injected from the first injection part 10 is more reliably delivered to the outdoors 42. Can be discharged.

(1-3) In the dust collector 2, the second injection part 11 is configured to have a ring-shaped second injection port 24 arranged so as to surround the suction port 7. Thereby, the second injection part 11 can blow out compressed air evenly into the first duct 5A.

(1-4) In the dust collector 2, the second injection part 11 was installed adjacent to the suction port 7. Thereby, since it can be configured integrally with the dust collector 2, it is possible to downsize the device.

(1-5) In the dust collector 2, the air outlet 8 is configured to communicate with the blower 3 or a ventilation device having the blower 3 for taking air from the outdoors 42 into the indoors 41. Thereby, the ventilation system 40 can purify the air outdoors 42 and supply it indoors.

(2-1) In the dust collector 2, when cleaning the dust section 9, the first injection section 10 and the second injection section 11 are operated to remove the dust collected in the dust collection section 9 from the suction port 7 to the outside. It was made to be discharged at 42. In the dust collector 2, the first injection section 10 has a pair of nozzles (a first injection section 10R, a first injection section 10L) arranged to face each other across the air flow passage area of the dust collection section 9. The first airflow 30 blown out from one side of the nozzle (first injection section 10R) and the second airflow 31 blown out from the other side of the nozzle (first injection section 10L) are collided to form a dust collecting section. A third airflow 32 directed towards air 9 is generated. As a result, when the dust contained in the air introduced from the outdoors 42 is removed by the dust collecting section 9 and sent out from the air outlet 8 to the indoor 41, the airflow that has passed through the dust collecting section 9 is transferred to the first injection section. Since it does not directly hit the first injection part 10, it is possible to prevent dust from adhering to the first injection part 10. In addition, when cleaning the dust collection part 9, the third airflow 32, which is the collision of the first airflow 30 and the second airflow 31, is a jet flow in the opposite direction to the direction of the airflow flowing from the suction port 7 to the blowout port 8. Therefore, the jet stream can be applied from the dust collecting section 9 toward the suction port 7, and the dust attached to the dust collecting section 9 can be reliably removed.

(2-2) In the dust collector 2, the first jetting section 10 generates the third airflow 32 so as to spray the airflow passage surface 9a of the dust collection section 9 in a direction perpendicular to the airflow passage surface 9a. Thereby, dust adhering to the dust collecting section 9 can be effectively removed. Furthermore, since the third airflow 32 containing the removed dust flows toward the suction port 7 (second injection part 11), it is suppressed from rising inside the device, and is efficiently discharged from the suction port 7 to the outdoors 42. be able to.

(2-3) In the dust collector 2, each of the pair of nozzles (first injection part 10R, first injection part 10L) is configured to have a plurality of first injection ports 19 along the vertical vertical direction. , is rotatable around a central axis 20 in the vertical vertical direction. This makes it possible to easily adjust the position at which the first spray section 10 sprays onto the airflow passing surface 9a of the dust collection section 9 in the entire area of the dust collection section 9 in the vertical direction (longitudinal direction) and the horizontal direction.

(2-4) In the dust collector 2, the control unit 29 rotates the central shaft 20 to change the collision position between the first airflow 30 and the second airflow 31 to the first injection unit 10L side and the first airflow side. It was controlled to move between the injection part 10R and the injection part 10R side. As a result, the position where the third airflow 32 is generated is moved in the left-right direction of the dust collecting section, so that the dust attached to the dust collecting section 9 can be reliably removed.

(2-5) In the dust collector 2, the air outlet 8 is configured to communicate with the blower 3 or a ventilation device having the blower 3 for taking air from the outdoors 42 into the indoors 41. Thereby, the ventilation system 40 can purify the air outdoors 42 and supply it indoors.

(3-1) In the dust collector 2, the control unit 29 operates the first injection unit 10 and the second injection unit 11 to send the dust collected in the dust collection unit 9 from the suction port 7 to the outdoors 42. When discharging, the flow rate of the compressed air blown out from the first injection part 10 is controlled to gradually increase. This makes it possible to remove the dust adhering to the dust collecting section 9 while suppressing the dust rising inside the device, thereby suppressing the scattering of dust toward the indoor 41 side from the dust collecting section 9. can.

(3-2) In the dust collector 2, the first injection section 10 is connected to a pair of nozzles (a first injection section 10R, a first injection section 10L), by colliding a first airflow 30 blown out from one side of the nozzle (first injection part 10R) with a second airflow 31 blown out from the other side of the nozzle (first injection part 10L), It is configured to generate a third airflow 32 toward the dust collecting section 9. The control unit 29 then controlled the flow rate of the third airflow 32 to gradually increase. As a result, a third airflow 32 is generated that is blown perpendicularly to the airflow passing surface 9a of the dust collecting section 9, and the third airflow 32 containing the removed dust is directed toward the suction port 7 (second injection section 11). Since the flow is directed toward the outside, the air is further suppressed from rising inside the device, and the air can be efficiently discharged from the suction port 7 to the outdoors 42.

(3-3) In the dust collector 2, the second injection unit 11 blows out a constant flow of compressed air flowing toward the outdoors 42 into the first duct 5A, thereby attracting it from the suction port 7 toward the outdoors 42. Created an airflow. As a result, it is possible to generate a larger flow rate than the flow rate of the compressed air injected from the second injection part 11, so that the dust removed by the compressed air injected from the first injection part 10 is more reliably delivered to the outdoors 42. Can be discharged.

(3-4) In the dust collector 2, the air outlet 8 is configured to communicate with the blower 3 or a ventilation device having the blower 3 for taking air from the outdoors 42 into the indoors 41. Thereby, the ventilation system 40 can purify the air outdoors 42 and supply it indoors.

The present invention has been described above based on the embodiments. Those skilled in the art will understand that these embodiments are merely illustrative, and that various modifications can be made to the combinations of their constituent elements or processing processes, and that such modifications are also within the scope of the present invention. By the way.

In the dust collector 2 according to the present embodiment, the ventilation system 40 is combined with the blower 3, but the present invention is not limited to this. For example, the blower 3 may be a ventilation device equipped with a heat exchange element. As a result, air supply and exhaust can be performed at the same time, and when there is a temperature difference between the outdoor 42 and indoor 41, the heat exchange element exchanges the heat contained in the supply and exhaust air, and the indoor 41 temperature changes can be minimized. Note that at this time, the dust collector 2 is installed in the air passage on the air supply side.

Further, in the dust collector 2 according to the present embodiment, the second injection part 11 is arranged adjacent to the suction port 7, but the invention is not limited thereto. For example, the second injection part 11 may be arranged near the middle of the first duct 5A. Even with this arrangement, it is possible to generate an airflow directed from the indoors 41 to the outdoors 42, so that the above-mentioned effects can be enjoyed. In addition, the position of the second injection part 11 is not limited to near the middle of the first duct 5A, but may be placed anywhere between the suction port 7 and the outdoor hood 1.

Further, in the dust collector 2 according to the present embodiment, even if dust is accumulated on the bottom of the casing 6 near the air outlet 8, the first injection part 10 is configured to inject the dust toward the air outlet 8 side. By having a configuration that allows rotation, accumulated dust can be thrown up. At this time, the raised dust can be discharged to the outdoors 42 by the backflow airflow directed toward the outdoors 42 side generated by the jet from the second injection part 11.

The dust collector according to the present invention is useful as an air purifying device used in a ventilation system, etc., since it is possible to improve cleaning and maintenance of the inside of the device.

1 Outdoor hood 2 Dust collector 3 Air blower 4 Blowout grill 5A First duct 5B Second duct 5C Third duct 6 Housing 7 Suction port 8 Air outlet 9 Dust collection section 9a Air flow passage surface 10 First injection section 10R First injection Part 10L First injection part 11 Second injection part 12 Adapter 13 Electrode plate 14 Support body 15 First joint part 16 Pipe 17 Nozzle 18 Rotating motor 19 First injection port 20 Central shaft 21 Second joint part 22 Outer cylindrical part 23 Inside Cylindrical part 24 Second injection port 25 Compressor 26 Gate valve 27 Pressure reducing valve 28 Flow rate adjustment valve 29 Control part 30 First air flow 31 Second air flow 32 Third air flow 40 Ventilation system 41 Indoor 42 Outdoor

Claims (4)

A dust collector that removes dust contained in outdoor air sucked in from an inlet and sends it out from an outlet,
a dust collection unit that collects dust contained in the outdoor air;
a first injection section that is disposed between the dust collection section and the air outlet and blows out compressed air toward the dust collection section;
a second injection part disposed between the suction port and the duct communicating with the outdoors, and blowing out compressed air flowing into the duct toward the outdoors;
a control unit that controls operations of the first injection unit and the second injection unit;
Equipped with
The control unit operates the first injection unit and the second injection unit to discharge the dust collected in the dust collection unit from the first injection unit to the outdoors from the suction port. A dust collector characterized by controlling the flow rate of compressed air blown out to gradually increase. The first injection section has a pair of nozzles that are arranged to face each other across the airflow passage area of the dust collection section, and the first airflow blown out from one of the nozzles and the first airflow blown out from the other nozzle. configured to collide with the blown out second airflow to generate a third airflow heading toward the dust collection section,
The dust collector according to claim 1, wherein the control unit controls the flow rate of the third airflow to gradually increase. 1 . The second injection unit generates an induced airflow from the suction port toward the outdoors by blowing compressed air flowing toward the outdoors into the duct at a constant flow rate. 1 . Or the dust collector described in 2. The dust collector according to any one of claims 1 to 3, wherein the air outlet is in communication with a blower for taking the outdoor air indoors or a ventilation device having the blower.

Images