TWM615355U - Air cleaning device - Google Patents

Abstract

This creation intends to solve the following problem: When the air containing dust is passed through the detection hole of the dust sensor to detect the concentration of the dust, the dust will accumulate in the detection hole of the dust sensor, which may easily lead to false detection of dust. The air cleaning device 100 includes a housing 1, a dust collecting filter 2, a dust sensor 3, and one prefilter 4. A first air duct 21 and a second air duct 22 are formed inside the housing. The first air duct 21 has a first air suction port 11 at one end, and the second air duct 22 has a second air suction port 12 at one end. The dust collecting filter 2 is arranged in the first air duct 21. The dust sensor 3 is arranged in the second air duct 22 to measure the concentration of dust below a specific size. The pre-filter 4 is arranged on the upstream side of the air flow sucked from the first air suction port 11 and the second air suction port 12 to prevent dust of a certain size or larger from entering the first air passage 21 and the second air passage 22.

Description

Air cleaning device

This creation is about an air cleaning device.

Previously, in order to accurately measure the concentration of dust in the air, the air was sucked through the detection hole of the dust sensor to determine the concentration of dust. (Patent Document 1 (Chinese Utility Model 203920341)). [Prior Technical Literature] [Patent Literature]

[Patent Document 1] Chinese Utility Model 203920341

[Problem to be solved by creation]

Currently, there is a problem as follows: when air containing dust is passed through the detection hole of the dust sensor to detect the concentration of the dust, the dust will accumulate in the detection hole of the dust sensor, which makes it easy to detect the dust by mistake. [Technical means to solve the problem]

The air cleaning device of the first aspect includes a housing, a dust collecting filter, a dust sensor, and a pre-filter. A first air duct and a second air duct are formed inside the housing. The first air duct has a first air suction port at one end, and the second air duct has a second air suction port at one end. The dust collection filter is arranged in the first air duct. The dust sensor is arranged in the second air duct to measure the concentration of dust below a certain size. The pre-filter is arranged on the upstream side of the air flow sucked in from the first air suction port and the second air suction port, and prevents dust of a certain size or larger from entering the first air duct and the second air duct.

In the air cleaning device, when the dust sensor is used to detect the concentration of dust, false detection of dust can be reduced.

The air purifying device of the second aspect is the device of the first aspect, and its housing has a plurality of surfaces. The first air suction port and the second air suction port are formed on the same surface of the housing.

In this air cleaning device, the first air suction port and the second air suction port can be easily covered by one pre-filter.

The air cleaning device of the third viewpoint is the device of the first viewpoint or the second viewpoint, and further includes a fan that generates air flow. The outer shell further forms a third air channel formed by the confluence of the first air channel and the second air channel on the downstream side of the first air channel and the second air channel. The air sucked in from the first air suction port and the second air suction port flows from the third air duct toward the suction port of the fan.

In this air cleaning device, the air passing through the first air passage and the air passing through the second air passage can be combined and sent to the fan.

The air cleaning device of the fourth aspect is the device of the first aspect or the second aspect, in which the pre-filter is in the shape of a mesh or sponge.

The air cleaning device of the fifth viewpoint is the device of the first viewpoint or the second viewpoint, in which the dust sensor measures the concentration of dust with a particle size of 10 μm or less. The pre-filter prevents dust with a particle size of 100 μm or more from entering the first and second air ducts.

In the air cleaning device, before the air passes through the first air duct and the second air duct, the large dust contained in the air can be removed by the pre-filter.

The air cleaning device of the sixth viewpoint is the device of the first viewpoint or the second viewpoint, wherein the distance between the first air suction port and the second air suction port is 50 mm or less.

In this air cleaning device, the first air suction port and the second air suction port can be easily covered by one pre-filter.

The air cleaning device of the seventh aspect is the device of the first aspect or the second aspect, in which the area of the first air suction port is larger than the area of the second air suction port.

The air purifying device of the eighth aspect is the device of the first aspect or the second aspect, wherein the area of the first air suction port is more than 50 times the area of the second air suction port.

The air cleaning device of the ninth viewpoint is the device of the first viewpoint or the second viewpoint, and further includes a second sensor different from the dust sensor. An air suction space is further formed inside the casing, and the air suction space has a third air suction port at one end. The second sensor is a carbon dioxide sensor that measures the concentration of carbon dioxide or an odor sensor that detects odors in the air. The second sensor is arranged in the air suction space.

The air cleaning device of the tenth aspect is the device of the ninth aspect, in which the pre-filter prevents dust of a certain size or more from entering the air suction space.

(1) The overall structure of the air cleaning device Fig. 1 shows a perspective view of the appearance of the air purifying device 100 of this embodiment. Fig. 2 shows the configuration of the air purifying device 100 of this embodiment when viewed from the left side face.

The air cleaning device 100 is installed in a space to be cleaned of air. The air cleaning device 100 has an air cleaning function of removing dust in the air from the air sucked into the inside.

As shown in FIGS. 1 and 2, the air cleaning device 100 includes a housing 1, a dust collecting filter 2, a dust sensor 3, a pre-filter 4, a fan 5, and a cover 8. In the air cleaning device 100, the cover 8 is attached to the housing 1.

(2) The detailed structure of the air cleaning device (2-1) Shell The housing 1 houses a dust collecting filter 2, a dust sensor 3, a pre-filter 4, and a fan 5 inside.

The housing 1 is formed with a first air suction port 11 and a second air suction port 12 for sucking in air from a space to be cleaned. In addition, an air blowing port (not shown) is formed in the housing 1, and the air blowing port is used to blow dust-removed air to the installation space of the air cleaning device 100.

The housing 1 mainly has a top surface portion 1a, a bottom surface portion 1b, a left side surface portion 1c, a right side surface portion 1d, a front surface portion 1e, and a rear surface portion 1f. The top surface portion 1a constitutes the top surface portion of the air cleaning device 100. The bottom portion 1b has a substantially rectangular shape that is relatively short in the left-right direction, and constitutes the bottom portion of the air purifying device 100. The left side face 1c represents the left side part of the air purifying device 100. The right side face 1d represents the right side part of the air purifying device 100. The front face portion 1e represents the front portion of the air purifying device 100. The rear part 1f shows the rear part of the air purifier 100. As shown in FIG.

The first air suction port 11 and the second air suction port 12 are formed on the top surface portion 1a of the housing 1. The first air suction port 11 is formed at a position close to the upper surface side of the dust collecting filter 2. The second air suction port 12 is formed at a position close to the upper surface side of the dust sensor 3. The air blowing ports are formed in the left side surface 1c and the right side surface 1d of the housing 1.

The housing 1 has a first air duct 21 and a second air duct 22 formed therein. The first air duct 21 has a first air suction port 11 at one end, and the second air duct 22 has a second air suction port 12 at one end. In the housing 1, a third air channel 23 in which the first air channel 21 and the second air channel 22 merge are further formed on the downstream side of the first air channel 21 and the second air channel 22. The air sucked in from the first air suction port 11 and the second air suction port 12 flows from the third air passage 23 toward the suction port of the fan 5.

The distance d between the first air suction port 11 and the second air suction port 12 is 50 mm or less. Here, as shown in FIG. 2, the distance d between the first air suction port 11 and the second air suction port 12 is referred to as the shortest distance between the first air suction port 11 and the second air suction port 12.

The area S1 of the first air suction port 11 is more than 50 times larger than the area S2 of the second air suction port 12.

(2-2) Pre-filter The pre-filter 4 is a filter used to capture the larger dust in the air.

An example of the prefilter 4 is shown in FIG. 3. The first part 4a of the prefilter 4 covers the first air suction port 11, and the second part 4b of the prefilter 4 covers the second air suction port 12. In this way, the air cleaning device 100 can cover the first air suction port 11 and the second air suction port 12 with one prefilter 4.

The pre-filter 4 is arranged on the upstream side of the air flow sucked in from the first air suction port 11 and the second air suction port 12, and prevents dust with a particle size of 100 μm or more from entering the first air passage 21 and the second air passage 22.

The prefilter 4 has a mesh shape. The prefilter 4 has a structure in which a mesh sheet is sandwiched by a resin frame from both sides.

(2-3) Dust sensor The housing 1 is provided with a dust sensor 3 on the front face 1e side. The dust sensor 3 measures the concentration of dust in the air. The dust sensor 3 is arranged in the second air duct 22 and measures the concentration of dust with a particle size of 10 μm or less.

The air cleaning device 100 further includes a carbon dioxide sensor 6 for measuring the concentration of carbon dioxide in the air as a second sensor different from the dust sensor 3. A carbon dioxide sensor 6 is provided on the side of the front face 1e in the housing 1. As described below, the carbon dioxide sensor 6 is disposed in the air suction space 24 to measure the concentration of carbon dioxide in the air.

4A shows the partial structure of the top surface 1a of the air cleaning device 100 after the prefilter 4 is removed, and FIG. 4B shows the partial structure of the top surface 1a of the air cleaning device 100 when the prefilter 4 is installed. In Figures 4A and 4B, the cover 8 is removed. As shown in FIGS. 4A and 4B, the dust sensor 3 and the carbon dioxide sensor 6 are arranged side by side on the side of the front face 1e in the housing 1.

(2-4) Fan A fan 5 is provided on the bottom surface 1b in the housing 1. The fan 5 has a suction port 5a for sucking in air on the surface opposite to the dust collecting filter 2. In addition, the fan 5 has a blowing port (not shown) for blowing air. The fan 5 generates air flow.

(2-5) Cover The cover 8 has fine holes on one side. The cover 8 allows air to pass through. However, the pores of the cover 8 are larger than the pores of the prefilter 4.

(3) Action of the air cleaning device 100 As shown in FIG. 2, the air F1 is sucked into the inside of the housing 1 from the first air suction port 11. In addition, the air F2 is sucked into the inside of the housing 1 from the second air suction port 12.

The pre-filter 4 removes the larger dust contained in the air F1 and the air F2, and the dust with a particle size of 100 μm or more. The air F1 passing through the pre-filter 4 flows in the first air duct 21. The air F2 passing through the pre-filter 4 flows in the second air duct 22.

The dust collecting filter 2 is arranged in the first air duct 21. The air F1 flowing in the first air duct 21 after passing through the pre-filter 4 passes through the dust collecting filter 2. The dust collecting filter 2 captures the fine dust in the air passing through the pre-filter 4. The dust in the air is mainly removed by the pre-filter 4 and the dust collecting filter 2.

The dust sensor 3 is arranged in the second air duct 22. The air F2 flowing in the second air duct 22 after passing through the pre-filter 4 passes through the detection hole of the dust sensor 3. The dust sensor 3 measures the concentration of dust with a particle size of 10 μm or less contained in the air F2.

The air F1 passing through the dust collecting filter 2 and the air F2 passing through the detecting hole of the dust sensor 3 merge to form an air F3. The air F3 flows to the third air passage 23 where the first air passage 21 and the second air passage 22 merge. The third air passage 23 is formed between the dust collecting filter 2 and the fan 5 on the downstream side of the first air passage 21 and the second air passage 22 in the casing 1. The air F3 flows from the second air duct 23 toward the suction port 5a of the fan 5.

Fig. 5 shows a partial structure of the air purifying device 100 viewed from the left side face 1c. In FIG. 5, illustration of the air F1 flowing from the first air duct 21 is omitted. Also, in FIG. 5, the cover 8 is removed. As shown in FIG. 5, a dust sensor 3 is provided on the left side of the front face 1e in the housing 1. The prefilter 4 covers the second air suction port 12. The air F2 sucked in from the second air suction port 12 flows in the second air duct 22 and passes through the detection hole of the dust sensor 3, and the concentration of dust with a particle size of 10 μm or less can be measured.

Fig. 6 shows a partial structure of the air purifying device 100 viewed from the right side face 1d. In FIG. 6, illustration of the air F1 flowing from the first air duct 21 is omitted. Also, in FIG. 6, the cover 8 is removed. As shown in FIG. 6, a carbon dioxide sensor 6 is provided on the right side of the front face 1e in the housing 1. The prefilter 4 covers the second air suction port 13. The air F4 sucked from the third air suction port 13 is sucked into the air sucking space 24, and the carbon dioxide sensor 6 measures the concentration of carbon dioxide in the air.

In the previous air cleaning device, in order to accurately measure the concentration of dust and carbon dioxide in the air, fresh air is taken in and the concentration is measured. Previously, depending on the machine, a small sponge-like filter for the dust sensor was sometimes equipped.

In addition, a pre-filter is usually placed on the wind side above the dust collecting filter to remove larger dust.

In the previous air cleaning device, the air containing dust is passed through the detection hole of the dust sensor to detect the concentration of dust in the air. However, when the dust sensor is used repeatedly, the dust will accumulate and sometimes it will be detected by mistake. Measured to be more dusty. Here, since the dust sensor detects the dust of 0.3-10 μm, it is better to remove the dust of 10 μm or more before passing the air through the detection hole of the dust sensor. In the previous air cleaning device, the example of the small filter used for the dust sensor was cited. However, because the filter is small and not easy to remove, it is more troublesome to clean and easy to lose. And because it is another accessory, It will cost.

In this embodiment, it is assumed that the dust collecting filter 2 and the dust sensor 3 are arranged in the vicinity. In addition, by extending the shape of the pre-filter for the dust collecting filter 2 to form a shape that also covers the dust sensor 3, the pre-filter for the dust collecting filter 2 and the pre-filter for the dust sensor 3 are formed Integration. Because the dust sensor 3 detects PM10 and PM2.5 and other particles with a particle size of 10 μm or less, large particles will cause interference. Therefore, the mesh size of the pre-filter 4 is larger than the size of the above-mentioned large particles, which is set to hundreds of μm .

In this embodiment, the pre-filter 4 is used to capture the dust of hundreds of μm or more that causes the dust sensor 3 to be clogged, so as to improve the problem of dust clogging inside the dust sensor 3, which can be used in the process of long-term use. Measure the concentration stably in the medium.

In addition, by integrating the dust collecting filter 2 with the prefilter 4 of the dust sensor 3, the user can remove the prefilter 4 only once, and the removal operation becomes easy. Moreover, the dust in the pre-filter 4 can be simply sucked out using a dust collector or the like, so the cleaning operation becomes easy. In addition, since the pre-filter 4 is a large part, the probability of loss is greatly reduced. In addition, since the prefilter 4 is a large part, it can reduce the cost compared with two different parts, a prefilter for dust collection filters and a prefilter for dust sensors.

In addition, in this embodiment, the dust sensor 3 and the carbon dioxide sensor 6 are covered by the pre-filter 4, which can alleviate the decrease in the detection accuracy of the sensor due to the clogging of the carbon dioxide sensor 6 with dust.

(4) Features (4-1) The air cleaning device 100 of this embodiment includes a housing 1, a dust collecting filter 2, a dust sensor 3, and one prefilter 4. The housing 1 has a first air duct 21 and a second air duct 22 formed therein. The first air duct 21 has a first air suction port 11 at one end, and the second air duct 22 has a second air suction port 12 at one end. The dust collecting filter 2 is arranged in the first air duct 21. The dust sensor 3 is arranged in the second air duct 22 to measure the concentration of dust below a specific size. The pre-filter 4 is arranged on the upstream side of the air flow sucked from the first air suction port 11 and the second air suction port 12 to prevent dust of a certain size or larger from entering the first air passage 21 and the second air passage 22.

In this air cleaning device 100, since the pre-filter 4 is arranged on the upstream side of the air flow sucked in from the first air suction port 11 and the second air suction port 12, by using one pre-filter 4, it is possible to specify Dust larger than the size will not enter both the first air duct 21 equipped with the dust collection filter 2 and the second air duct 22 equipped with the dust sensor 3, so that the dust arranged in the second air duct 22 can be used When the sensor 3 detects the concentration of dust, it can reduce the false detection of dust.

(4-2) In the air cleaning device 100 of this embodiment, the housing 1 has a plurality of surfaces 1a, 1b, 1c, 1d, 1e, and 1f. The first air suction port 11 and the second air suction port 12 are formed on the same surface 1 a of the housing 1.

In this air cleaning device 100, since the first air suction port 11 and the second air suction port 12 are formed on the same surface 1a of the housing 1, the first suction port 11 and the second air suction port 11 can be easily covered by one prefilter 4. 2Inhalation port 12.

(4-3) The air cleaning device 100 of this embodiment further includes a fan 5 that generates an air flow. In the housing 1, a third air channel 23 in which the first air channel 21 and the second air channel 22 merge are further formed on the downstream side of the first air channel 21 and the second air channel 22. The air sucked in from the first air suction port 11 and the second air suction port 12 flows from the third air passage 23 toward the suction port 5a of the fan 5.

In this air purifying device 100, since the third air channel 23 where the first air channel 21 and the second air channel 22 merge are formed on the downstream side of the first air channel 21 and the second air channel 22, it is possible to The air sucked in from the first air suction port 11 and flowing in the first air passage merges with the air sucked in from the second air suction port 12 and flowing in the second air passage, and is sent to the suction port 5a of the fan 5.

(4-4) In the air cleaning device 100 of this embodiment, the pre-filter 4 has a mesh shape or a sponge shape.

In this air cleaning device 100, since the material of the pre-filter 4 is made into a mesh or sponge shape, the pre-filter 4 can be manufactured at low cost. The pre-filter 4 can be cleaned easily.

(4-5) In the air cleaning device 100 of this embodiment, the dust sensor 3 measures the concentration of dust with a particle size of 10 μm or less. The prefilter 4 prevents dust with a particle size of 100 μm or more from entering the first air duct 21 and the second air duct 22.

In the air cleaning device 100, the air sucked in from the first air suction port 11 and the air sucked in from the second air suction port 12 can be passed through the pilot air passage 21 and the second air passage 22, respectively. The filter 4 removes the larger dust contained in the air.

(4-6) In the air cleaning device 100 of this embodiment, the distance d between the first air suction port 11 and the second air suction port 12 is 50 mm or less.

In this air purifying device 100, since the first air suction port 11 and the second air suction port 12 are arranged in close proximity to the housing 1 so that the distance d between them is 50 mm or less, it is possible to use one pilot The filter 4 easily covers the first air suction port 11 and the second air suction port 12.

(4-7) In the air cleaning device 100 of this embodiment, the area S1 of the first air suction port 11 is larger than the area S2 of the second air suction port 12.

In this air cleaning device 100, since the area S1 of the first air suction port 11 is larger than the area S2 of the second air suction port 12, it is different from the air sucked from the second air suction port 12 in order to detect the concentration of dust in the air. Compared with the amount, more air can be sucked in from the first air suction port 11 to clean the air.

(4-8) In the air cleaning device 100 of this embodiment, the area S1 of the first air suction port 11 is 50 times or more the area S2 of the second air suction port 12.

In the air cleaning device 100, since the area S1 of the first air suction port 11 is 50 times or more the area S2 of the second air suction port 12, it is necessary to detect the concentration of dust in the air from the second air Compared with the amount of air sucked in by the suction port 12, more air can be sucked in from the first air suction port 11 for air cleaning.

(4-9) The air cleaning device 100 of the present embodiment further includes a carbon dioxide sensor 6 different from the dust sensor 3, and the carbon dioxide sensor 6 measures the concentration of carbon dioxide. An air suction space 24 having a third air suction port 13 at one end is further formed inside the housing 1. The carbon dioxide sensor 6 is arranged in the air suction space 24.

In the air cleaning device 100, in addition to the dust sensor 3, a carbon dioxide sensor is further provided. Therefore, the dust sensor 3 can detect the concentration of dust in the air while using the carbon dioxide sensor 6 Measure the concentration of carbon dioxide in the air.

(4-10) In the air cleaning device 100 of this embodiment, the pre-filter 4 suppresses dust of a certain size or larger from entering the air suction space 24.

In the air cleaning device 100, by using the pre-filter 4, dust above a certain size can not enter the air suction space 24, thereby preventing the carbon dioxide sensor 6 from clogging due to the internal dust of the carbon dioxide sensor 6 The detection accuracy is reduced.

(5) Variation example (5-1) Variation 1A In the air cleaning device 100 of this embodiment, the case where the dust sensor 3 and the carbon dioxide sensor 6 are provided has been described, but it is not limited to this. The air cleaning device may only have the dust sensor 3. In addition, the air cleaning device may also be equipped with a dust sensor 3 and an odor sensor for detecting odors in the air.

(5-2) Variation 1B In the air cleaning device 100 of this embodiment, the case where the pre-filter 4 is a mesh shape is demonstrated, but it may be a sponge shape.

(5-3) Variation 1C Above, the implementation of this creation has been described, but it should be understood that various changes in methods or details can be made without departing from the spirit and scope of the creation described in the scope of the utility model patent application.

1: shell 1a: Top face 1b: bottom face 1c: left face 1d: right face 1e: front face 1f: Rear side 2: Dust collection filter 3: Dust sensor 4: prefilter 5: Fan 5a: suction port 6: Carbon dioxide sensor (2nd sensor) 8: Cover 11: The first air suction port 12: The second air suction port 13: The third air suction port 21: The first air duct 22: 2nd air duct 23: 3rd air duct 24: Air suction space 100: Air cleaning device d: distance F1: Air F2: Air F3: Air F4: Air

Figure 1 is a perspective view of the appearance of the air cleaning device. Fig. 2 is a diagram showing the structure of the air cleaning device. Figure 3 is a diagram of the pre-filter of the air cleaning device. Fig. 4A is a diagram showing a partial structure of the top face of the air purifying device. Fig. 4B is a diagram showing the partial structure of the top face of the air purifying device. Fig. 5 is a diagram showing the partial structure of the left side face of the air purifying device. Fig. 6 is a diagram showing the partial structure of the right side face of the air purifying device.

1: shell

1a: Top face

1b: bottom face

1e: front face

1f: Rear side

2: Dust collection filter

3: Dust sensor

4: prefilter

5: Fan

5a: suction port

11: The first air suction port

12: The second air suction port

21: The first air duct

22: 2nd air duct

23: 3rd air duct

100: Air cleaning device

d: distance

F1: Air

F2: Air

F3: Air

Claims (10)

An air cleaning device comprising: a housing (1) in which a first air passage (21) and a second air passage (22) are formed, and the first air passage (21) has a first air suction port at one end (11), the second air duct (22) has a second air suction port (12) at one end; a dust collection filter (2) arranged in the first air duct; a dust sensor (3), which Arranged in the second air duct to measure the concentration of dust below a specific size; and a pre-filter (4) arranged on the upstream side of the air flow sucked in from the first air suction port and the second air suction port , Prevent dust above a certain size from entering the first air duct and the second air duct. The air cleaning device of claim 1, wherein the housing has a plurality of surfaces (1a, 1b, 1c, 1d, 1e, 1f), and the first air suction port and the second air suction port are formed on the same surface of the housing (1a). For the air cleaning device of claim 1 or 2, further comprising a fan (5) for generating the air flow, and the housing is further formed with a third air passage (23) on the downstream side of the first air passage and the second air passage ), the third air duct (23) is formed by the confluence of the first air duct and the second air duct, and the air sucked in from the first air suction port and the second air suction port from the third air The channel flows toward the suction port (5a) of the above-mentioned fan. Such as the air cleaning device of claim 1 or 2, wherein the above-mentioned pre-filter is in the shape of a mesh or sponge. The air cleaning device of claim 1 or 2, wherein the dust sensor measures the concentration of dust with a particle size of 10 μm or less, and the pre-filter prevents dust with a particle size of 100 μm or more from entering the first air duct and the second air duct. The air cleaning device of claim 1 or 2, wherein the distance (d) between the first air suction port and the second air suction port is 50 mm or less. The air cleaning device of claim 1 or 2, wherein the area of the first air suction port is larger than the area of the second air suction port. Such as the air cleaning device of claim 1 or 2, wherein the area of the first air suction port is more than 50 times the area of the second air suction port. For example, the air cleaning device of claim 1 or 2, further comprising a second sensor (6) different from the above-mentioned dust sensor, and an air suction space (24) is further formed inside the above-mentioned housing, and the above-mentioned air suction space (24) There is a third air suction port (13) at one end. The second sensor is a carbon dioxide sensor that measures the concentration of carbon dioxide or an odor sensor that detects odors in the air. The second sensor is The device is arranged in the air suction space. Such as the air cleaning device of claim 9, wherein the above-mentioned pre-filter inhibits dust above a certain size from entering the above-mentioned air suction space.

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