JP2004069157A - Air cleaner - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To remove dust widely in the vicinity of floor surface of a room where an air cleaner is installed. <P>SOLUTION: In this air cleaner, air sucked into a body case 1 is cleaned by a pre-filter 29, a dust collecting filter 30 and a deodorizing filter 31 and blown out of the body case. A lower suction port 7 for taking in air to the windward side of the pre-filter 29 is formed on the front lower part of the body case 1, and a passage 24 for taking in air to the windward side of the pre-filter 29 from the side lower part and the back lower part of the body case 1 is formed. Air in the vicinity of the floor surface on the body case front side and air in the vicinity of the floor surface on the body case side or that on the back side via the passage can be respectively sucked into the body case and the vicinity of the floor surface can be widely cleaned. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to an air purifier that purifies air sucked into a main body case and blows the air out of the main body case.
[0002]
[Prior art]
Conventionally, as this type of air purifier, the air in the installed room is sucked in from the air inlet formed in the front of the main unit case, and the sucked air is passed through a dust collection filter and a deodorizing filter to remove dust and remove odor components. An air purifier that removes and purifies air is known.
[0003]
Such an air purifier can remove dust floating in the air by sucking air from the front side into the main body case, but also remove dust near the floor, especially on the side and back sides of the main body case. hard. For this reason, when a baby crawls on the floor, there is a problem that dust or the like on the floor is sucked.
[0004]
[Problems to be solved by the invention]
SUMMARY OF THE INVENTION It is an object of the present invention to provide an air purifier capable of removing dust and the like near the floor of an installed room over a wide range.
[0005]
[Means for Solving the Problems]
Means for solving the above-mentioned problem is that, in an air purifier that purifies air sucked into the main body case with a filter and blows out the outside of the main body case, air is taken into the windward side of the filter at a lower front part of the main body case. And a passage for taking in air from the lower side surface or the lower rear surface of the main body case to the windward side of the filter.
[0006]
Thereby, the air near the floor on the front side of the main body case from the lower intake port, and the air near the floor on the side surface side of the main body case or the air near the floor surface on the back side of the main body case through the passage are respectively filled in the main body case. Since it can be purified by sucking into the floor, it is possible to purify the vicinity of the floor surface over a wide range, and it is possible to reduce the danger of sucking dust and the like when the infant crawls on the floor surface.
[0007]
In the above configuration, a leg is provided at a lower portion of the main body case, and the passage is formed by utilizing a space in the leg.
[0008]
Accordingly, even if a space for separately forming a passage is not provided in the main body case, the passage can be formed by using the inside of the leg supporting the main body case, and the enlargement of the main body case can be prevented.
[0009]
Further, air can be taken into the passage from the lower portions on both side surfaces of the main body case.
[0010]
As a result, the air near the floor is not sucked in from only one side of the main body case, but is sucked in from both sides. Over time.
[0011]
Further, air can be taken into the passage from the lower part on both sides and the lower part on the back side of the main body case.
[0012]
Thereby, the air near the back surface is sucked in from the both side surfaces and the back surface, so that the air near the floor surfaces on the both side surfaces and the back surface can be purified, and the vicinity of the floor surface can be purified over a wider range.
[0013]
A decorative plate is provided on the front of the main body case, and an opening for taking in air to the windward side of the filter is formed at the bottom of the decorative plate.
[0014]
As a result, air near the floor can be taken in from this opening, and the amount of air taken in can be increased to purify the air more efficiently.
[0015]
Further, a bulging portion bulging toward the front side from the back side peripheral edge of the opening is formed in the main body case.
[0016]
Thus, the air near the floor is guided by the bulging portion and can be smoothly taken in from the opening.
[0017]
Further, the lower intake port is formed at the bottom of the bulging portion, and the leg is formed with an inclined surface descending toward the front side at a position facing the lower intake port.
[0018]
Thus, the air is smoothly taken in from the lower intake port by being guided by the inclined surface formed on the leg.
[0019]
BEST MODE FOR CARRYING OUT THE INVENTION
An air purifier according to an embodiment of the present invention will be described with reference to FIGS. Hereinafter, the front cover 3 side is referred to as a front side, and the rear case 2 side as a back side.
[0020]
Reference numeral 1 denotes a main body case of an air purifier made of synthetic resin, which comprises a rear case 2 having an open front side as shown in FIG. 4, and a front cover 3 detachably attached to the rear case 2. Have been.
[0021]
An operation portion 39 (FIG. 6) described later is formed on the upper portion of the front cover 3, and a decorative plate 4 having a light-transmitting property is provided substantially at the center of the front surface as shown in FIG. As shown in FIGS. 4 and 5, openings 5 communicating with the back surface of the front cover 3 are formed in the left and right side surfaces and the bottom of the decorative plate 4. In addition to the above, air is taken into the main body case 1 from these openings 5.
[0022]
Below the decorative plate 4 in the front cover 3, a bulging portion 6 bulging forward from the periphery of the opening 5 at the bottom of the decorative plate 4 is formed. A horizontally long lower intake port 7 is formed over substantially the entire cover 3.
[0023]
In addition, side intake ports 8, 8 are respectively formed by cutouts on one opposing side surface (left side surface) and the other side surface (right side surface) of the front cover 3. In the vicinity of these side air inlets 8, turning parts 9 for guiding the air sucked from the side air inlets 8 to the back side of the front cover 3 are attached by screws 10.
[0024]
In addition, a plurality of ribs 11 are formed on the rear surface of the front cover 3 from the periphery of each side intake port 8 toward the inside as shown in FIGS. Further, a plurality of ribs 12 are formed from the bottom toward the upper side from the lower intake port 7.
[0025]
A first guide portion 13 inclined obliquely upward is formed at an intermediate position between the ribs 11 on one side surface, and a second guide portion 14 inclined obliquely downward is formed at an intermediate position between the ribs 11 on the other side surface. I have. Further, the rib 12 on the bottom side of the front cover 3 is formed with a third guide portion 15 which is bent from the vicinity of the lower intake port 7 to one side and inclined obliquely upward.
[0026]
As shown in FIG. 4, a locking portion 17 is formed at the bottom of the front cover 3 to be inserted into a locking hole 16 formed at a lower portion on the front side of the rear case 2. Is formed with a locking claw (not shown) which is detachably locked to a partition plate 27 described later by operating the push button 18 shown in FIGS.
[0027]
A leg 19 is formed integrally with a lower portion of the rear case 2. An inclined surface 20 is formed on the front side of the leg 19 at a position facing the lower intake port 7 of the front cover 3 and descends toward the front side. A communication port 21 communicating between the inside and outside of the leg is formed on the inclined surface 20, and a side auxiliary air intake port 22 communicating between the inside and outside of the leg 19 is formed at a lower portion of both sides of the rear case 2. In addition, a rear sub intake port 23 is formed in a lower portion of the rear surface of the main body case 1 to communicate the inside of the leg 19 with the outside of the main body case 1 through a space outside a fan casing 26 to be described later and a hole 1a on the bottom surface of the main body case 1. Have been. A passage 24 is formed between the side sub intake port 22 and the rear sub intake port 23 and the communication port 21 by utilizing the space in the leg 19.
[0028]
A lattice-shaped exhaust port 25 is formed on the upper surface of the rear case 2, and a handle (not shown) and a spiral fan casing 26 are formed on the rear surface. It is communicated with outside.
[0029]
Reference numeral 27 denotes a partition plate for partitioning the inside of the main body case 1 into front and rear portions, and a hole 27a communicating the front and rear space is formed in the center of the partition plate. The partition plate 27 is formed with a concave storage portion 28 that opens on the front cover 3 (front) side. In this storage portion 28, a pre-filter 29, a dust collecting filter 30, and a deodorizing filter 31 are leeward. Are stored sequentially.
[0030]
The pre-filter 29 has a structure in which a filter material (not shown) made of non-woven fabric is held on a lattice-shaped synthetic resin frame, and the upper end thereof is formed with ribs 32 formed on the upper wall of the storage section 28. And the dust collecting filter 30, and the lower end thereof is locked and attached to a hole 33 formed in the lower wall of the storage section 28.
[0031]
The dust collecting filter 30 is formed by processing an electretized polypropylene non-woven fabric into a fold-fold shape and fixing the periphery thereof to a paper frame, and removes dust in the air that has passed through the pre-filter 29. .
[0032]
The deodorizing filter 31 contains activated carbon or the like and adsorbs and removes odor components in the air.
[0033]
In addition, a dust sensor (not shown) is provided near the storage unit 28. The dust sensor irradiates light to the air sucked into the main body case 1 and detects the amount of reflected light. Then, the amount of dust having a diameter that is likely to include pollen is a predetermined value d or more (here, 1 μm or more), and the amount of dust that is unlikely to include pollen is less than a predetermined value d. The amount of a certain small dust is detected and output to a control unit described later.
[0034]
Reference numeral 34 denotes a blower disposed on the rear case 2 side of the partition plate 27, and includes a motor 35 attached to the partition plate 27 and a fan 36 driven by the motor 35.
[0035]
An ozone generator 37 is provided outside the pre-filter 29 and provided on the upper part of the main body case 1 as an ozone generator. The ozone generator applies a high voltage (DC 6 kV in this case) between electrodes covered with ceramic. To generate ozone.
[0036]
Reference numeral 38 denotes a control board provided on the upper part of the main body case 1, and a control unit such as a microcomputer (not shown) is provided. The control unit determines the amounts of the large dust, the small dust, and the odor component in three stages of A when the amount is small, B when the amount is medium, and C when the amount is large according to the outputs from the dust sensor and the gas sensor described later.
[0037]
Reference numeral 39 denotes an operation unit provided on the upper part of the main body case 1. As shown in FIG. 6, an operation time indicator light 40, an indicator light 41 which is displayed in a filter purification mode shown in FIG. , A dirt status indicator lamp 43, an operation mode indicator lamp 44, a receiver 45 for receiving a signal from a remote controller (not shown), a mode selection switch 46, and the like. A gas sensor (not shown) is provided inside the operation unit 39.
[0038]
The replacement time indicator 40 flashes when the total operation time reaches a predetermined value, and notifies the user of the replacement time of the dust collecting filter 30 and the deodorizing filter 31 by the flashing.
[0039]
The timer indicator light 42 lights and displays the time set by the signal from the remote controller (here, three types of 1 hour, 2 hours, and 8 hours) in three stages, and displays the time in steps according to the time until the operation is stopped. To turn off the light and let the user recognize the time until the operation is stopped.
[0040]
The dirt condition indicator lamp 43 includes a large dust indicator lamp 47 and a small dust indicator lamp 48 for displaying the dirt condition of the air sucked into the main body case 1 according to the output from the dust sensor, and according to the output from the gas sensor. And an odor display lamp 49 to be displayed.
[0041]
The large dust indicator lamp 47 is controlled by the control unit in accordance with the amount of large dust, and is lit green when the amount is small, yellow when the amount is medium, and red when the amount is large. On the other hand, the small dust indicator lamp 48 is controlled by the control unit according to the amount of small dust, and is lit green when the amount is small, yellow when the amount is medium, and red when the amount is large.
[0042]
The odor indicating lamp 49 is controlled by the control unit in accordance with the amount of the odor component detected by the gas sensor, and is lit green when the amount is small, yellow when the amount is medium, and red when the amount is large.
[0043]
The display of the large dust indicator 47, the small dust indicator 48, and the odor indicator 49 allows the user to recognize the dirty state of the room.
[0044]
The operation mode indicator light 44 and the automatic indicator light 50 for displaying the automatic mode, and the display area is gradually increased in the order of weak, weak, medium, strong, and extraordinarily strong airflow, and each airflow is displayed in a distinguishable manner. It is composed of an air volume indicator light 51, a turbo indicator light 52 for displaying the turbo mode, and a pollen indicator light 53 for displaying the pollen mode. The air volume indicator 51 can recognize each mode based on the air volume set in the weak mode, the weak mode, the medium mode, the strong mode, and the special mode.
[0045]
Each time the mode selection switch 46 is pressed, the mode is switched among an automatic mode, a weak mode, a weak mode, a medium mode, a strong mode, an extraordinary mode, a turbo mode, a pollen mode, and an operation stop.
[0046]
In the automatic mode, the air volume of the blower 34 is automatically adjusted by the control unit based on the output detected by the dust sensor or the gas sensor. Specifically, when all of the large dust amount and the small dust amount detected by the dust sensor and the amount of the odor component detected by the gas sensor are small, the air volume is set to a weak air volume in A, and either of them is set. When the air volume is medium, the air volume is set to a low air volume in A when there are few other air volumes, and the air volume is set to a medium air volume in C when either air volume is large.
[0047]
In the weak mode, the weak mode, the medium mode, the strong mode, and the strong mode, the air volume increases in the order of the weak mode, the weak mode, the middle mode, the strong mode, and the strong mode regardless of the output from the dust sensor or the gas sensor. The operation is performed with the air volume set for each.
[0048]
In the turbo mode, the air conditioner is operated with an extremely strong air flow for a predetermined time (here, three minutes), and then driven with a strong air flow for a predetermined time (here, three minutes) and stopped. By performing this mode, even if the room is contaminated with a lot of dust and odor components, the dust and odor components can be quickly removed and the state can be quickly reduced to a predetermined amount or less.
[0049]
In the pollen mode, the air volume set by the amount of dust is one step larger than the normal air volume. Specifically, when the amount of dust is small, A is weak, when it is medium, B is medium, and when it is large, C is strong. Is set to Then, as in the automatic operation, the fan 36 is driven with the largest air volume among the air volume according to the amount of dust, the air volume according to the amount of dust, and the air volume according to the amount of the odor component. . By performing the operation in the pollen mode at a time when it is considered that a large amount of pollen is floating, the pollen that is anxious can be quickly removed by increasing the air volume more than usual.
[0050]
Next, the operation will be described.
[0051]
When an automatic mode or the like is selected by the mode selection switch 46, the fan 36 of the blower 34 is driven at an air volume according to the selected mode.
[0052]
When the fan 36 is driven, air is sucked into the windward side of the pre-filter 29 of the main body case 1 while being guided to the rib 11 side by the turning portion 9 from the side intake ports 8 on one side surface and the other side surface. It is. Then, the air sucked in from one side along the windward surface of the pre-filter 29 is guided by the first guide portion 13 formed on the rib 11 on one side, and the wind direction is oblique from the horizontal direction. The air that is changed upward is sucked from the other side and guided by the second guide portion 14 formed on the rib 11 on the other side, and the wind direction is changed obliquely downward.
[0053]
Then, from the lower intake port 7, the air near the floor surface is smoothly sucked by being guided by the inclined surface 20 of the leg 19, and is guided by the third guide portion 15 formed on the rib 12, and the wind direction is changed from one side to the upper side. Changed diagonally upward on the side.
[0054]
As described above, the wind direction is changed by the first guide portion 13, the second guide portion 14, and the third guide portion 15, so that the sucked air turns along the windward surface of the pre-filter 29. While moving toward the pre-filter 29 side.
[0055]
Air is also sucked into the main body case 1 from the opening 5 on the peripheral edge of the decorative board 4. In particular, air is smoothly taken in from the lower opening 5 by being guided to the bulging portion 6.
[0056]
Further, the air near the floor is sucked from the rear sub intake port 23 and the side sub intake ports 22 on the left and right sides by the flow of the air sucked from the lower intake port 7, and the communication port 21 from the passage 24. Flows into the windward side of the pre-filter 29 in the main body case 1 through the lower intake port 7.
[0057]
In this way, the air flowing into the windward side of the pre-filter 29 passes through the pre-filter 29 while turning by changing the wind direction to the first guide portion 13, the second guide portion 14, and the third guide portion 15. The coarse dust is removed, the dust passing through the dust collection filter 30 and passing through the pre-filter 29 is removed, and the dust passing through the deodorizing filter 31 is removed. Then, the air purified by removing dust and odor components flows into the fan casing 26 from the hole 27a, is guided by the fan casing 26, and is blown out from the exhaust port 25.
[0058]
As described above, in addition to sucking the air near the floor on the front side of the main body case 1 from the lower intake port 7 toward the windward side of the pre-filter 29 in the main body case 1, the vicinity of the floor surface from both sides and the rear side By sucking the air through the passage 24, dust and the like near the floor can be removed not only from the front side but also from the side and back of the main body case 1 over a wide range. Thereby, when a baby crawls on the floor, it is possible to reduce the risk of inhaling dust and the like.
[0059]
Further, since the passage 24 is formed by utilizing the space in the leg 19, there is no need to provide a separate space for forming the passage 24, and the size of the main body case 1 can be prevented from increasing.
[0060]
By the way, during this operation, the accumulated operation time T is counted by the control unit, and the accumulated time is set to 0 which is an initial value every predetermined time t0 (here, 24 hours). When the accumulated time T is 0, the control section sets the filter purification mode shown in FIG.
[0061]
When the filter purification mode is set, the display unit 41 is turned on, and the fan 36 is driven by the weakest air volume regardless of the selected operation mode, the ozone generator 37 is operated, and ozone is generated. .
[0062]
Since the generated ozone is heavier than air, it is diffused by its own weight from the ozone generator 37 located above the pre-filter 29 to the pre-filter 29 side, and the first guide part 13, the second guide part 14, and the third guide The air is swirled by the part 15 and diffuses uniformly on the windward side of the pre-filter 29, and passes through the pre-filter 29, the dust collecting filter 30, and the deodorizing filter 31.
[0063]
At this time, by guiding the air sucked into the main body case 1 toward the first guide portion 13 and the second guide portion 14 by the deflection portion 9, a large amount of air can be swirled to diffuse ozone.
[0064]
The ozone is naturally decomposed within a short time to generate active oxygen and the like, which can sterilize various bacteria and decompose odor components with the active oxygen and the like. Therefore, even if various bacteria attach to the pre-filter 29, the dust collecting filter 30, and the deodorizing filter 31 or the odor components are adsorbed by the passage of the dirty air, ozone is generated on the windward side of the pre-filter 29 as described above. Thus, the adhered germs can be uniformly sterilized over a wide range to suppress the growth of the germs, and the adsorbed odor components can be decomposed uniformly over a wide range.
[0065]
The ozone generator 37 repeats the operation of operating for the first predetermined time t1 (here, 6 minutes) and then stopping for the second predetermined time t2 (here, 6 minutes). As described above, the ozone generator 37 is not operated continuously, but is repeatedly operated and stopped, so that the ozone can be generated again after the ozone is sufficiently decomposed, and excessive ozone can be generated. Does not occur.
[0066]
Further, since the fan 36 is driven by the weakest airflow, the ozone is sufficiently decomposed before being blown out from the exhaust port 25. Therefore, harmful ozone can be prevented from leaking out of the main body case 1.
[0067]
When this operation and the stop were repeated and a third predetermined time t3 (here, one hour) had elapsed, it was determined that the bacteria and odor components adhering to the pre-filter 29, the dust collecting filter 30, the deodorizing filter 31, and the like were sufficiently removed. Judge and stop the operation of the filter purification mode. Then, the operation in the operation mode selected by the mode selection switch or the remote controller is restarted. When the accumulated time T reaches the predetermined time t0 and is reset, the operation in the filter purification mode is performed again.
[0068]
As described above, by performing the operation of purifying the pre-filter 29, the dust collecting filter 30, and the deodorizing filter 31 at every predetermined time t0, it is possible to suppress the growth of various bacteria in the pre-filter 29, the dust collecting filter 30, and the deodorizing filter 31. In addition, the odor component can be removed, so that even after long-term operation, the multiplied bacteria can be used without being discharged from the exhaust port 25, and the odor component is discharged along with the exhausted wind. It can be used comfortably without any. In addition, when replacing the pre-filter 29 and the like, the germs proliferated from the pre-filter 29 and the dust collecting filter 30 are not scattered, and the operation can be performed hygienically.
[0069]
In the above-described embodiment, the air near the floor can be taken in from the side auxiliary air inlets 22 on the lower sides of the main body case 1 and the rear auxiliary air inlet 23 on the lower rear side. One or two may be provided.
[0070]
Although it is desirable to form the passage 24 using the space in the leg 19, a separate passage may be formed.
[0071]
Further, air is sucked into the lower intake port 7 through the passage 24 and the communication port 21 from the side and the rear side by being attracted to the flow of the air sucked from the lower intake port 7. And may be directly taken into the windward side of the pre-filter through a passage.
[0072]
Although the filter provided with the pre-filter 29, the dust collecting filter 30, and the deodorizing filter 31 has been described, any one or two filters may be provided.
[0073]
【The invention's effect】
According to the present invention, air near the floor is taken in from the lower part on the front side of the main body case to the windward side of the filter, and one of the lower part on one side, the lower part on the other side, and the lower part on the back side of the main body case Alternatively, by taking in air near the floor from two or all of them, dust on the floor can be removed over a wide range from the front side to the side and back sides of the main body case, and the infant can crawl on the floor. In this case, it is possible to reduce the risk of sucking dust or the like.
[0074]
In addition, by forming a passage for taking in air from the lower side and lower part of the body case using the space in the legs, there is no need to provide a separate space for forming a passage, and the body case becomes larger. Can be prevented.
[0075]
In addition, a decorative plate is provided on the front of the main body case, an opening is formed at the bottom of the decorative plate to take in air to the windward side of the filter, and a bulging portion is formed from the rear side peripheral edge of the opening toward the front side. Thus, the air near the floor can be smoothly guided to the opening by the bulging portion, and more air can be taken in through the opening.
[0076]
In addition, a lower intake port is formed at the bottom of the bulging portion, and a portion facing the lower intake port of the leg is formed as a slope descending toward the front, so that the lower intake port is smoothly guided from the lower intake port. Can take in air.
[Brief description of the drawings]
FIG. 1 is a front view of an air purifier showing a first embodiment of the present invention.
FIG. 2 is a side view of the air purifier.
FIG. 3 is a front view of the air purifier with a front cover removed.
FIG. 4 is a side sectional view of the air purifier.
FIG. 5 is a plan sectional view of the air purifier.
FIG. 6 is a detailed view of the vicinity of an operation unit of the air purifier.
FIG. 7 is a diagram showing an operation state of the ozone generator of the air purifier.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Main body case 4 Decorative board 5 Decorative board opening 6 Swelling part 7 Lower intake port 19 Leg 20 Inclined surface 24 Passage 29 Pre-filter 30 Dust collection filter 31 Deodorizing filter

Claims (7)

In an air purifier that purifies air sucked into the main body case with a filter and blows the air out of the main body case, a lower intake port for taking in air to the windward side of the filter is formed in a lower front part of the main body case, An air purifier, wherein a passage for taking in air from a lower side surface or a lower rear surface of the main body case to the windward side of the filter is formed. The air cleaner according to claim 1, wherein a leg is provided at a lower portion of the main body case, and the passage is formed using a space in the leg. The air purifier according to claim 1 or 2, wherein air can be taken into the passage from lower portions on both side surfaces of the main body case. The air purifier according to claim 1 or 2, wherein air can be taken into the passage from a lower portion on both sides and a lower portion on a back surface of the main body case. The decorative plate is provided in front of the main body case, and an opening for taking in air to the windward side of the filter is formed in a bottom portion of the decorative plate. Air purifier. The air purifier according to claim 5, wherein a swelling portion swelling from a rear edge of the opening toward a front side is formed in the main body case. The lower intake port is formed at the bottom of the bulging portion, and the leg is formed with an inclined surface descending toward the front side at a position facing the lower intake port. An air purifier according to item 1.

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