JP4957858B1 - Electric vacuum cleaner - Google Patents

Abstract

【Task】
In conventional vacuum cleaners, a deodorizing filter having a photocatalyst layer has been installed in a ventilation path through which a main stream of suction air flows in a dust collection chamber. As a result, fine dust that could not be collected is deposited and accumulated on the deodorizing filter, preventing light from reaching the photocatalyst layer, blocking the photocatalyst pores, and preventing odor adsorption and decomposition. There was a problem that it could not be fully demonstrated.
[Solution]
An electric vacuum cleaner according to the present invention includes a suction port, a dust collecting unit that contains a dust storage unit that holds dust sucked from the suction port, a deodorizing member, an electric blower that sucks air from the suction unit, and holds these The deodorizing member has a shape that allows ventilation in at least the suction direction, is disposed downstream of the dust accumulation portion of the dust collection chamber and upstream of the electric blower, and faces the intake portion. At least a part of the surface is configured to be opposed to the inner wall forming the main body or the dust collecting portion.
[Selection] Figure 9

Description

  The present invention provides an electric device having means for reducing the amount of unpleasant odor caused by odor generated from dust or the like accumulated in a dust collection chamber inside the main body and being released to the outside of the room together with exhaust when starting the main body. It is about a vacuum cleaner.

  In the conventional vacuum cleaner, after the main body is stopped, an unpleasant odor is generated from the dust collected in the dust collecting portion in the main body, and the unpleasant odor stays in the main body of the vacuum cleaner. This staying unpleasant odor is discharged out of the vacuum cleaner along with the exhaust flow when the vacuum cleaner is started. Therefore, conventionally, in order to reduce this unpleasant odor, a deodorizing function has been installed in the exhaust port, which is the ventilation path through which the mainstream of the intake air, which is the wind that flows inside the vacuum cleaner, or in the rear stage of the dust collection chamber A configuration has been proposed. Among these, in recent years, a deodorizing function using a photocatalyst has attracted attention, and an electric vacuum cleaner having a deodorizing function that does not require long-term maintenance by decomposing odor by using this function has been developed. (For example, refer to Patent Document 1). In addition, said main flow shows the main flow of attraction | suction wind, and means that the flow of a part of wind disperse | distributed from the main flow of said attraction | suction air | flow is not included by spreading | diffusion or a vortex.

JP-A-9-1222049

  However, in the related art disclosed in Patent Document 1 described above, a deodorizing filter having a photocatalyst layer is installed in a ventilation path through which a main stream of suction air flows in a dust collection chamber. As a result, fine dust of nano-order size that could not be collected in the previous stage adhered to and accumulated on the deodorizing filter, preventing light from reaching the photocatalyst layer. At the same time, the pores of the photocatalyst are blocked to prevent the adsorption and decomposition of odors, so that there is a problem that the deodorizing performance cannot be sufficiently exhibited.

  The present invention has been made to solve the above-mentioned problems, and it is necessary to maintain the dust collecting part by suppressing the adhesion of fine dust to the deodorizing part and minimizing the deterioration of the deodorizing performance. The purpose is to provide a vacuum cleaner with a longer period.

The vacuum cleaner according to the present invention includes a main body casing, a dust collecting unit that is provided in the main body casing and cleans air containing dust, and is provided in the main body casing. An electric blower for introducing dust-containing air from the suction portion into the dust collecting portion and discharging the purified air discharged from the dust collecting portion from the main body housing exhaust port, and in the main body housing An internal space for storing the dust collecting portion, and the back surface is provided in the internal space, the back surface does not overlap the opening surface of the air intake portion of the electric blower, and at least a part of the back surface is in the internal space. A deodorizing member provided close to the inner wall surface and having at least a part of the surface opened, and at least a part of the back surface of the deodorizing member is provided close to the front wall surface of the electric blower in the inner space. The dust collecting part having an area smaller than the opening surface. Constructed in the same plane as the intake filter for capturing fine dust that has passed through, has a shape that allows ventilation in only one direction, and supports a photocatalyst that responds from the ultraviolet region to the visible light region. An adsorbent is attached, or either a metal oxide or an adsorbent is attached, arranged so as to face the deodorizing member from the electric blower toward the dust collecting unit, and the deodorizing member It is comprised so that it may have a light source which irradiates .

  The vacuum cleaner according to the present invention employs the above-described configuration, thereby suppressing the adhesion of dust to the deodorizing portion and minimizing the deterioration of the deodorizing performance. Thereby, the period which requires the maintenance of a dust collection part can be made longer.

It is an external appearance perspective view which shows the whole vacuum cleaner which concerns on Embodiment 1 of this invention. 1 is a perspective view of a main body of a vacuum cleaner according to Embodiment 1 of the present invention. It is a top view of the main body of the vacuum cleaner which concerns on Embodiment 1 of this invention. It is a side view of the main body of the vacuum cleaner which concerns on Embodiment 1 of this invention. It is AA sectional drawing of FIG. 3 which concerns on Embodiment 1 of this invention. It is BB sectional drawing of FIG. 3 which concerns on Embodiment 1 of this invention. It is CC sectional drawing of FIG. 5 which concerns on Embodiment 1 of this invention. It is a schematic cross section of the diagonal direction of the deodorizing part 51 vicinity which concerns on Embodiment 1 of this invention. It is a top view of the cleaner body 5 in a state in which the dust collection unit 50 according to Embodiment 1 of the present invention is removed. It is AA sectional drawing of the cleaner body 5 of FIG. 3 in the state which removed the dust collecting part 50 which concerns on Embodiment 1 of this invention. It is the perspective view of the dust collection part 50 which concerns on Embodiment 1 of this invention, a front view, and a rear view. It is the perspective view of the folder which accommodated the intake filter 52 and the deodorizing member 51a which concern on Embodiment 1 of this invention, a front view, and a rear view.

Hereinafter, the configuration, operation / action, and effect of the electric vacuum cleaner according to Embodiment 1 of the present invention will be described with reference to the drawings.

(Configuration of the entire vacuum cleaner)
FIG. 1 is a perspective view showing an appearance of a vacuum cleaner 100 according to the present invention. First, the configuration of the electric vacuum cleaner 100 according to Embodiment 1 will be described with reference to FIG.
The vacuum cleaner 100 includes a suction port body 1, a suction pipe 2, a connection pipe 3, a suction hose 4, and a cleaner body 5.
The suction port body 1 is for sucking in dust, dust on the floor surface, ambient air, that is, dust-containing air, etc., when the user cleans the suction port which is one surface of the suction port body 1 It is. The outlet side of the suction port body 1 has a structure that extends straight up to the position of the user's hand so that the user can work in an easy-to-use posture, and is connected to, for example, one end of a cylindrical suction pipe 2. The other end of the suction pipe 2 is connected to one end of a connection pipe 3 that is bent slightly in the middle. The connecting pipe 3 is provided with a handle portion 3 a provided with an operation switch for controlling the operation of the vacuum cleaner 100. The other end of the connection pipe 3 is connected to one end of a suction hose 4 having a bellows shape and flexibility. The other end of the suction hose 4 is connected to the main body suction port 56 of the cleaner body 5. In this way, the suction port body 1, the suction pipe 2, the connection pipe 3, and the suction hose 4 are one path for allowing dust, dust, and dust-containing air to flow into the main body suction port 56 of the cleaner body 5. Part.

(Overall configuration of the vacuum cleaner body 5)
Next, the overall configuration of the cleaner body 5 will be described. FIG. 2 is a perspective view of the cleaner body 5, FIG. 3 is a top view of the cleaner body 5, and FIG. 4 is a side view of the cleaner body 5.
2 to 4, the cleaner body 5 separates the main body housing 90 that stores the main parts of the cleaner, the main body suction port 56, and dust, dust, and the like sucked from the suction port body 1. A dust collecting portion 50 for storing the dust, a handle 58 for gripping the user when carrying it, a wheel 55 for moving the room when used, and a cord reel portion (not shown) for storing the power cord Etc.

(Internal structure of the vacuum cleaner body 5)
Next, the internal configuration of the cleaner body 5 will be described. 5 is a cross-sectional view taken along line AA of the cleaner body 5 of FIG. 3, FIG. 6 is a cross-sectional view taken along line BB of the cleaner body 5 of FIG. 3, and FIG. 7 is a cross-sectional view taken along line CC of FIG. is there. As shown in FIG. 5, inside the main body housing 90, the main body suction port 56, a suction air passage 49 for allowing dust and dust sucked from the main body suction port 56 to pass through, and the dust collection 50, a deodorizing part 51 (shown in FIG. 7) for decomposing odors such as dust and dust collected in the dust collecting part, and a motor having a fan inside, thereby rotating the inside of the ventilation passage of the cleaner body 5 And an electric blower 53 for sucking dust, dust and the like from the suction port of the suction port body 1 into the dust collecting unit 50, and other sucked air leaving dust and dust in the dust collecting unit 50. And a suction exhaust space 57 which is a space before the exhaust gas is discharged to the outside.
The main body suction port 56 forms an opening to the space outside the main body housing 90 with the suction hose 4 removed.

  In addition, as shown in FIG. 6, in the main body housing 90, an intake filter 52 for capturing fine dust and the like that has passed through the dust collecting unit 50, and air that has passed through the exhaust space 57 are vacuumed. And an exhaust port 54 for discharging to the outside of the main body 5.

(Configuration of the dust collector 50)
Next, the structure of the dust collection part 50 is demonstrated.
As shown in FIG. 3, the upper surface of the dust collection unit 50 constitutes a part of the upper surface of the main body housing 90, and a handle 58 is provided at the center thereof. The dust collecting unit 50 has a structure that can be removed by the user holding the handle 58 on the upper surface of the main body housing 90 and pulling the handle 58 upward and rearward. In a state where the dust collecting part 50 is removed, the shape of the dust collecting part 50 shown in FIG. 9 as shown in the top view of the cleaner main body 5 and the AA cross-sectional view of the cleaner main body 5 shown in FIG. It becomes various shapes.
As shown in FIG. 10, a space for storing the dust collection unit 50 in the main body housing 90 is referred to as a main body internal space.

As shown in FIG. 5, a dust collection case 50 b for collecting dust and the like having a cubic box shape is attached to the back side of the upper surface of the dust collection unit 50. FIG. 11A is a perspective view of the dust collection case 50b when viewed from the left side when the main body suction port 56 of the cleaner body 5 is front, and FIG. 11B is a front view thereof. FIG. 11C is a rear view thereof. Inside the dust collection case 50b is stored a dust storage unit 50a provided for storing dust, dust, and the like sucked from the suction port 1. The dust accumulation part 50a is made of a filter material having air permeability and is formed in a bag shape. The dust accumulation part 50a separates and collects dust, dust, and the like from the dust-containing air taken in the inside.
The dust storage unit 50a can be replaced. As a result, when the dust collecting case 50b swells to the full and the user feels that the dust repair performance has deteriorated, the dust collecting portion 50a is removed when the user grasps the handle 58 and takes out the dust collecting portion 50. For example, the maintenance can be easily performed, such as replacement.

As shown in FIG. 5 and FIG. 11, the dust collection case 50 b has a dust collection portion intake opening that opens in a substantially circular shape for introducing suction air sucked from the suction air passage 49 into the dust collection portion 50. 50c and the dust collecting unit 50 have a dust collecting unit exhaust port 50d for separating dust, dust and the like and guiding the remaining air to the electric blower 53.
As shown in FIGS. 5 and 11, the dust collecting portion intake port 50 c is provided so as to communicate with the suction air passage 49 and guides the suction air to the dust accumulation portion 50 a. Therefore, for example, it has the same shape and the same size as the suction air passage 49, and is configured so as not to cause pressure loss.
Further, as shown in FIGS. 6 and 7, the dust collecting unit exhaust port 50d passes the filter material forming the outer shape of the dust accumulating unit 50a, so that the suction air cleaned to some extent is supplied to the electric blower 53. Lead.

Further, as shown in FIGS. 6 and 11, the dust collecting portion exhaust port 50d faces a wall surface 53c inside the cleaner body 5 where an intake filter 52 and a deodorizing member 51a, which will be described later, are installed, and the deodorizing member 51a. It is formed so as to have an area larger than that of the intake filter 52, and is disposed so as to communicate with the intake filter 52. No pressure loss member is provided between the dust accumulation part 50a and the deodorizing member 51a, and there is no hindrance to air circulation.
Further, the dust collecting portion exhaust port 50d is formed so as to form an opening in a lattice shape as an air path substantially parallel to the suction direction. By forming the openings in a lattice shape in this way, the air from the dust collecting portion is rectified so as to flow in parallel along the lattice. Thereby, the air which came out of the dust collection part comes to flow toward an intake filter. (
7 is a cross-sectional view taken along the line C-C of the cleaner body 5 of FIG. 5. As shown in FIG. 7, the dust collecting unit exhaust port 50d has an intake unit 53a having an intake filter 52 from the direction of the deodorizing member 51a. It is formed to become thicker as it approaches the direction. That is, the flow on the intake filter 52 side is more rectified than the deodorization member 51a by shortening the lattice on the deodorizing member side 51a (lower side in FIG. 7) and lengthening the lattice on the intake filter 52 side (upper side in FIG. 7). Thus, the air that has flowed out of the dust collecting portion acts so as to flow toward the intake filter 52. Thereby, it acts so that the flow of the air from the dust collection part to the deodorizing part 51a surface may be reduced.

(Configuration and arrangement of deodorizing unit 51 and intake filter 52)
Next, the configuration and arrangement of the deodorizing unit 51 and the intake filter 52 will be described. FIG. 8 is a schematic cross-sectional view in the oblique direction near the deodorizing unit 51. FIG. 12A is a perspective view of the folder containing the intake filter 52 and the deodorizing member 51a when viewed from the left rear when the main body suction port 56 of the cleaner body 5 is the front. 12 (b) is a front view thereof, and FIG. 12 (c) is a rear view thereof. As shown in FIGS. 8 and 9, the deodorizing unit 51 includes a deodorizing member 51a for deodorizing odors, and a light source 51b for irradiating the deodorizing member with light having a predetermined wavelength.

In the first embodiment, for example, the deodorizing member 51a is a corrugated base material such as a cardboard box material, a visible light responsive photocatalyst whose activity is increased in response from the ultraviolet region to the visible light region, such as titanium oxide. In addition, a member is used in which a metal oxide, which is a substance that holds odor when the photocatalyst cannot obtain light, and an adsorbent such as zeolite are mixed in advance. This metal oxide is called a thermal catalyst, and the decomposition action can be brought out by applying heat. Therefore, as shown in FIG. 5, by installing the deodorizing member 51a so as to be adjacent to the electric blower 53, heat can be applied to the deodorizing member 51a to extract the decomposition action.
The deodorizing member 51a is not necessarily a corrugated shape, but preferably has a shape with a large surface area, which can be sucked in only one direction and whose side surface is closed.
Further, the deodorizing member 51a may be a mixture of not only all of the ultraviolet responsive photocatalysts, visible light responsive photocatalysts, metal oxides, and adsorbents, but any of them.

  This deodorizing member 51a is casing and installed on the main body side so that it can be removed from the vacuum cleaner main body 50 and maintenance can be performed. As shown in FIGS. 8 and 9, the deodorizing member 51a is housed in the same holder together with the intake filter 52, for example.

As shown in FIG. 8, the intake filter 52 is installed facing the intake portion 53a, which is an opening that is sucked into the electric blower, and sucked air sucked from the intake portion 53a is ventilated. Further, as shown in FIGS. 8 and 12, both the opening surfaces of the deodorizing member 51 a and the intake filter 52 have openings so as to be substantially perpendicular to the suction direction of the electric blower 53. The deodorizing member 51a is adjacent to the intake filter 52 in the same plane as described above. However, the deodorizing member 51a is not in front of the intake portion 53a so that the suction air sucked from the intake portion 53a is not vented as much as possible. The opening of the intake portion 53a and the surface of the deodorizing member 51a are installed so as not to overlap. Further, a part of the surface of the deodorizing member 51a facing the air intake portion 53a is installed so as to be covered with the electric blower front wall surface 51c which is a part of the inner wall surface of the main body internal space.
The holder for storing the deodorizing member 51 a and the intake filter 52 is installed in a concave portion provided between the dust collection unit 50 and the electric blower 53.

(Light source 51b)
As shown in FIG. 7, the light source 51 b constituting the deodorizing unit 51 is provided adjacent to the electric blower 53. The light source 51b is installed so as to face the deodorizing member 51a so that light emitted from the light source 51b hits the deodorizing member 51a during operation of the main body.

The light source 51b uses an LED that emits blue light. In the configuration of the electric vacuum cleaner according to the first embodiment, since the photocatalyst attached to the deodorizing member 51a is a visible light responsive one, the light source is blue. However, even a visible light responsive one tends to have a higher decomposition effect when the light wavelength is shorter, and it is desirable to use a light having a wavelength of 500 nm or less. Therefore, for example, a blue LED having a main wavelength of 470 nm is used.
Moreover, it is desirable to disperse the light by providing a polarizing plate between the light source 51b and the deodorizing member 51a so that the deodorizing member 51a is irradiated with light in a wide range.

  As shown in FIGS. 9 and 10, the holder is installed obliquely so that the deodorizing member 51 a and the intake filter 52 face the top surface when the dust collecting unit 50 is taken out. That is, the deodorizing member 51a is not only irradiated by the light source 51b, but is also inclined and installed in an oblique direction with respect to the top surface direction, so that it is easy to obtain light irradiated from above the room. . Thereby, when the dust collection part 50 is removed, the deodorizing member 51a receives the fluorescent light of the ceiling and the light of the sun, and the photocatalyst of the deodorizing member 51a receives the visible light and the ultraviolet ray of the light, so that most deodorizing performance The structure is such that disassembly performance can be obtained even during maintenance when there is a high possibility that the material has deteriorated.

The arrangement of the deodorizing member 51a is not particularly limited to the above arrangement, and may be installed in the dust collecting unit. However, if the deodorizing member 51a is in the dust collecting unit 50, the bag forming the dust accumulating unit 50a. When it becomes full, it may come into direct contact and prevent the spread of odors. In addition, dust leaking from the dust accumulation unit 50a is likely to adhere. In addition, there is a problem that the distance from the light source 51b is long and it is difficult to irradiate.
In the first embodiment, the deodorizing member 51a does not need to be actively maintained. However, for example, when an object that generates a strong odor, such as pet manure, is sucked in, the decomposition cannot catch up, and washing is performed. There are cases to do. In addition, when the bag forming the dust accumulation part 50a is damaged, it is sometimes impossible to suppress the adhesion of dust. Therefore, since the deodorizing member 51a is removable as described above, it can be removed and maintained.

(Overall operation description)
Next, operation | movement of the vacuum cleaner of Embodiment 1 is demonstrated.
As shown in FIG. 1, a power cord is connected to the cleaner body 5. When the user connects the power cord to an external power source such as an outlet, the cleaner body 5 is energized. Then, when the user turns on the operation switch of the handle portion 3a, the electric blower 53 is driven to perform a suction operation. Specifically, the user brings the suction port of the suction port body 1 into contact with the floor surface or the like and sucks dust, dust or the like on the floor surface. Thereby, the dust, dust, and the like flow from the main body suction port 56 into the cleaner body 5 through the suction port body 1, the suction pipe 2, the connection pipe 3, and the suction hose 4.

  As shown in FIG. 5, the dust-containing air containing dust, dust, and the like flowing into the cleaner body 5 reaches the dust collecting unit 50 through the suction air passage 49. The dust-containing air flows into the dust accumulation unit 50a from the dust collection unit intake port 50c. Since the dust accumulation part 50a is formed in a bag shape with a breathable filter material, it separates and collects dust from the dust-containing air taken in the inside. The remaining air passes through the dust accumulation part 50a and flows downstream from the dust collection part 50 through the dust collection part exhaust port 50d.

  As shown in FIG. 8, the air that has been separated from the dust-containing air and cleaned by the dust collection unit 50 of the dust accumulation unit 50 a flows toward the intake filter 52 and the deodorization unit 51 (FIG. 8). Indicated by white arrows). Then, when the air passes through the intake filter 52, fine dust and the like are captured by the filter, whereby the remaining air is purified. Then, as shown in FIG. 6, the electric blower 53, the exhaust space 57, and the exhaust port 54 are discharged to the outside of the cleaner body 5. On the other hand, since the dust accumulation part 50a is formed in a bag shape as described above, every time the user cleans, the dust is separated and collected from the dust-containing air taken in, and the dust is taken in. While swelling up to the dust collection case 50b full.

  Therefore, the larger the volume of the dust accumulation unit 50a and the dust collection case 50b, the longer the dust can be collected, and the number of maintenance of the dust collection unit 50 can be reduced. In general, the dust accumulation unit 50a and the dust collection case 50b are designed so that several months worth of dust can be accumulated. However, since the dust storage unit 50a is premised on ventilation, the dust collection performance cannot be 100%. Accordingly, it is generally known that at least fine dust having a particle size of several hundred nanometers or less is passed along with the suction air and the mainstream. In particular, in a state where a large amount of dust is accumulated, the dust that has been collected and accumulated from the front by the newly sucked dust is pushed out and passes through the dust accumulation unit 50a. For this reason, it is recognized that the more the dust is accumulated in the dust accumulation unit 50a, the lower the collection performance is. Accordingly, when the user feels that the dust collection performance has deteriorated, the dust collection unit 50 takes out the dust collection unit 50 by holding the handle 58 and pulling out the dust collection unit 50 in an obliquely upward direction. In addition, maintenance is performed by exchanging the dust storage unit 50a.

(Odor generated from the dust storage unit 50a)
Next, the odor generated from the dust accumulation unit 50a and the discomfort that the odor gives to the user will be described.
As described above, the garbage storage unit 50a has a volume that allows household garbage to be stored for several months and used. That is, even if the cleaner body 5 is operating or stopped for several months, the dust accumulating unit 50a is not installed and maintained in the cleaner body 5. Therefore, the trash is continuously generated without being removed from the cleaner body 5. In particular, when the vacuum cleaner is stopped, the air moves only by natural stagnation due to changes in temperature and humidity and gas component concentrations, and there is almost no fresh odorless air coming in and out. Continues to spread and accumulate. As described above, the accumulated odor is discharged to the outside at a time together with the operation when the cleaner body 5 is started up, and becomes an exhaust odor, resulting in discomfort to the user. As the amount of dust stored in the dust storage unit 50a increases, the odor of the generated dust increases, so that the exhaust odor at the start of the cleaner tends to become stronger.

(Deodorizing action and deodorizing effect of the deodorizing part 51)
Next, the deodorizing action of the odor by the deodorizing part 51 is demonstrated.
As described above, odors are gradually released from the dust accumulated in the dust accumulation unit 50a with time after the vacuum cleaner is stopped. In general, it is known that gas flows from a thicker side to a thinner side due to a diffusion phenomenon caused by a concentration gradient. That is, a certain amount of dust odor is accumulated in the dust accumulation unit 50a, and then diffuses naturally from the dust accumulation unit 50a toward the outside of the dust collection unit 50. At this time, as shown in FIG. 5, when the deodorizing member 51a having the ability to remove odors is installed in a position where the dust collecting unit 50 communicates with the space, that is, in the same space, the odor is removed in the vicinity of the deodorizing member 51a. As a result, the odor concentration is kept low. Therefore, the odor is not diffused in the entire cleaner body 5 but remains only in the vicinity of the deodorizing member 51a, and is suppressed to a low concentration. Therefore, the deodorizing effect can be sufficiently obtained even when the dust-containing air does not ventilate the surface of the deodorizing member 51a during the operation of the cleaner body 5.

  It is generally known that there are two processes for removing odors, adsorption and decomposition. For adsorption, only the odor component itself is retained and not lost, so there is a limit, and if the limit is exceeded, the odor cannot be removed. Therefore, the adsorbed odor must be removed from the target by having the user perform maintenance such as cleaning. However, with regard to decomposition, since the odor can be made into a gas that does not smell, there is an advantage that the user does not need maintenance. Therefore, in the vacuum cleaner according to the present invention, attention is paid to the decomposition, and the deodorizing member attached with the photocatalyst is irradiated with light using a light source and natural light to decompose and remove the odor.

  However, if dust adheres to the surface of the deodorizing member 51a, the dust prevents light from being hit, the light does not hit the photocatalyst itself, and decomposition does not occur. Further, the pores for temporarily holding the odor to cause decomposition are buried with dust, and the odor holding performance cannot be obtained. That is, since the decomposition performance cannot be obtained, it is necessary to perform maintenance for removing dust.

Therefore, in the first embodiment, as shown in FIG. 8, the deodorizing member 51a is adjacent to the intake filter 52 in the same plane, but since there is such a background, the suction air sucked from the intake portion 53a is In order to prevent the deodorizing member 51a from being ventilated as much as possible, the deodorizing member 51a is installed so as not to be in front of the intake portion 53a and to be overlapped. Moreover, it installs so that a part of surface which opposes the intake part 53a in the deodorizing member 51a may be covered with the electric blower front wall surface 51c which is a part of the inner wall surface of the main body internal space. Accordingly, it is possible to suppress the mainstream ventilation of the suction air with respect to the deodorizing member 51a, and it is possible to suppress the minute dust contained in the suction air from slightly adhering to the surface of the deodorizing member 51a.
In addition, by installing the dust accumulation unit 50a upstream of the deodorizing member 51a, it is possible to eliminate the adhesion of large dust.

  In addition, since the deodorization of the odor in the cleaner main body 5 mainly occurs by natural diffusion when the cleaner is stopped as described above, it is desirable to suppress the ventilation to the deodorizing member 51a as much as possible. Therefore, in this configuration, the electric blower front wall surface 51c covers a part of the deodorizing member 51a. However, if the entire surface is covered, it is possible to prevent the suction air from being ventilated at all and to prevent fine dust from adhering. Can be suppressed.

  In addition, as shown in FIG. 8, the dust collection filters are adjacent to each other in the same plane, and are arranged so that the main flow of the suction air sucked from the intake portion 53a flows. While collecting dust, rectifying the main flow of the suction air and preventing scattering due to the formation of turbulent flow, it is possible to further suppress the adhesion of dust to the deodorizing member. Due to these effects, it is possible to reduce the shielding of dust on the surface of the deodorizing member 51a, keep the light from the light source sufficiently applied to the deodorizing member, and maintain the decomposition performance.

  The deodorizing member 51a must be open so that a part of the deodorizing member 51a is always in contact with the air present in the main body, and needs to be communicated with the dust accumulation unit 50a in space, that is, in the same space. As described above, the odor naturally diffuses, but if the deodorizing member 51a itself is partitioned so as not to be in the same space as the dust accumulation unit 50a that is the odor generating source, the odor is naturally not diffused and the deodorizing effect is also achieved. It will not be obtained. Therefore, the performance can be exhibited by increasing the open area of the deodorizing member 51a as much as possible and not being separated from the dust accumulating part 50a by the pressure loss body and communicating in space.

In addition, as described above, the deodorizing member 51a has a corrugated shape, such as a corrugated shape, so that the surface area is increased, the portion that is exposed to light is increased, the ratio of the adhesion area of dust is reduced, and the deodorizing member The flow of odor from the front surface (the dust collecting unit 50 side) to the back surface (the electric blower 53 side) can be improved.
At this time, the deodorizing member 51a is desirably of a type that allows ventilation in only one direction as in the first embodiment. For example, if it is formed in a fiber shape or the like, it is possible to ventilate from multiple directions, but a turbulent flow field is likely to be formed inside the deodorizing member 51a, and fine dust is likely to adhere. In addition, when the light is in one direction, it is difficult to generate a shadow portion that is not exposed to light by irradiating light from a direction that allows ventilation.

(Operation and effect of material with deodorizing member)
Next, the function and effect of the attached material will be described.
The photocatalyst has an action of decomposing odor by emitting electrons by obtaining light energy, generating radicals in the surroundings. By irradiating light from the light source 51b to the deodorizing member 51a to decompose the odor, the deodorizing performance does not deteriorate even when used for a long time. In particular, by obtaining light of a low wavelength mainly in the ultraviolet region, a high decomposition effect can be obtained. That is, it is theoretically possible to maintain the deodorizing performance permanently. However, in practice, the light is hindered by dust adhering or the like, causing deterioration. Therefore, the effect cannot be sufficiently obtained unless the installation shape is such that the dust adhesion is suppressed as in the first embodiment.

  When a photocatalyst is used in an electric vacuum cleaner, a method of increasing the activity of the photocatalyst using a light source is mainly taken. However, in practice, the effect of the photocatalyst can be obtained by collecting external light and irradiating the photocatalyst. Therefore, in the first embodiment, in addition to using the light source, the deodorizing member 51a is installed in the oblique direction to the top surface direction so that light emitted from above the room can be easily obtained. Therefore, when the dust collecting part 50 is removed, the deodorizing member 51a receives the fluorescent light and solar light on the ceiling, and the photocatalyst of the deodorizing member 51a receives visible light and ultraviolet rays in the light, so that the deodorizing performance is most deteriorated. It is possible to obtain the photocatalyst decomposition performance at the time of maintenance that is highly likely to be performed.

  In the case of using a normal photocatalyst, it is common to use a light source having an ultraviolet light as a main wavelength in order to increase the activity. However, there is a possibility that the light source 51b may be directly visually recognized when the dust collecting unit 50 is taken out, and there are cases where the ultraviolet rays give the user a symptom such as eye itchiness. Therefore, it is desirable to avoid the use of ultraviolet rays. Therefore, in the first embodiment, a so-called visible light responsive photocatalyst is used as the deodorizing member 51a, so that a light source having a visible light region as a main wavelength is used. Therefore, even when the light source 51b is viewed directly, the effect of increasing the activity as a photocatalyst of the deodorizing member 51a can be achieved while reducing the influence of the risk user when viewed directly.

  Further, the metal oxide and the adsorbent play a role of keeping the odor on the surface. The photocatalyst has a decomposing action, but the effect is only while the light source 51b is operating. Therefore, the odor cannot be decomposed when the power is not supplied, that is, when the light source 51b is not operating. Therefore, in the first embodiment, a metal oxide is mixed in the deodorizing member 51a in order to keep the odor when the photocatalyst cannot obtain light. Thereby, when the light source 51b is not irradiating the deodorizing member 51a, the deodorizing member 51a holds it by adsorbing the odor, and while the light source 51b is irradiating the deodorizing member, the adsorbed odor is decomposed. The process of cleaning the deodorizing member can be obtained, and the odor in the cleaner body 5 can be kept low.

  Note that the metal oxide is called a thermal catalyst, and the decomposition action can be brought out by applying heat. Therefore, in the vacuum cleaner according to the first embodiment, the deodorizing member 51a is installed adjacent to the electric blower 53 as shown in FIG. 51a can be heated. Thereby, not only the decomposition effect of the photocatalyst but also the decomposition effect by the metal oxide can be brought out.

(Operation and effect of light source 51b)
As mentioned above, it is better not to look directly at ultraviolet rays. Therefore, in the prior art, when removing the dust collection part 50, control, such as stopping irradiation of LED, was required. However, since the LED which does not contain ultraviolet rays is used in the first embodiment, the LED is continuously irradiated as long as the power is turned on and the decomposition action is continuously obtained regardless of the state of use by the user. I can do it. Specifically, the LED is irradiated simultaneously with the start of energization of the cleaner body, the LED is irradiated even when the dust collecting unit 50 is removed, and the end of the energization directly stops the LED.

  In addition, in order to irradiate all the photocatalysts attached to the deodorizing member 51a and extract the decomposition effect, it is preferable that the light emitted from the light source 51b is irradiated to the entire deodorizing member 51a. Therefore, it is desirable to disperse light by providing a polarizing plate between the light source 51b and the deodorizing member 51a.

  Further, by adopting a configuration in which the light source 51b is installed so that light is irradiated from the side opposite to the surface facing the dust collecting portion 50, the side where fine dust leaking from the dust accumulation portion of the deodorizing member is difficult to adhere is emphasized. The photocatalytic performance can be obtained without being affected by fine dust contamination.

  In addition, the deodorizing member 51 a is installed in a recess provided in the cleaner body 5. As a result, the convex shape generated by the installation of the deodorizing member 51a is made smaller, and the catch when the dust collecting unit 50 is taken out is suppressed, and dust is prevented from accumulating in the convex portion, and the deodorizing member 51a is prevented from being contaminated. The effect to do.

  As described above, according to the first embodiment, by suppressing the adhesion of fine dust to the deodorizing member and minimizing the deterioration of the deodorizing performance, the exhaust does not smell even without performing maintenance for a long time. I can do it.

  In addition, although it becomes a form different from this Embodiment 1, you may install the said deodorizing member so that it may have a predetermined angle with respect to the irradiation axis | shaft of the said light source. By not making the irradiation angles of the deodorizing member 51a and the light source 51b vertical, the area irradiated with light can be increased. Thereby, it becomes easy to irradiate light to the whole deodorizing member, and decomposition | disassembly performance improves.

  In the first embodiment, the dust storage unit 50a is configured to use a dust collection bag. However, for example, a dust collection system such as a cyclone separator or a filter can provide the same effect. Further, the present invention is not limited to the canister type vacuum cleaner described in the embodiment.

  The present invention is not limited to the first embodiment described above, and many modifications can be made by those having ordinary knowledge in the art within the technical idea of the present invention.

DESCRIPTION OF SYMBOLS 1 Suction port body, 2 Suction pipe, 3 Connection pipe, 3a Handle part, 4 Suction hose, 5 Vacuum cleaner body, 49 Suction air path, 49a Release port, 50 Dust collection part, 50a Dust accumulation part, 50b Dust collection case, 50c Dust collector inlet,
50d Dust collecting part exhaust port, 51 Deodorizing part, 51a Deodorizing member, 51b Light source, 51c Electric blower front wall surface, 52 Intake filter, 53 Electric blower, 53a Intake part, 54 Exhaust port, 55 Wheel, 56 Main body suction port, 57 Exhaust Space, 58 handle, 90 body housing, 100 vacuum cleaner

Claims (4)

The main body housing,
A dust collecting part provided in the main body casing for cleaning air containing dust;
Air that is provided in the main body housing and that contains dust from the main body suction portion of the main body housing is introduced into the dust collection portion, and the purified air discharged from the dust collection portion is discharged into the main body housing exhaust port. An electric blower for discharging from the
An internal space provided in the main body housing for storing the dust collecting portion;
Provided in the internal space, the back does not overlap the opening surface of the intake portion of the electric blower, and
A deodorizing member in which at least a part of the back surface is provided close to the inner wall surface of the internal space, and at least a part of the surface is opened;
With
The deodorizing member is
At least a part of the back surface is provided close to the front wall surface of the electric blower in the internal space, has an area smaller than the opening surface, and is the same as an intake filter for capturing fine dust or the like that has passed through the dust collecting portion. It consists of a flat surface, has a shape that allows ventilation in only one direction, supports a photocatalyst that responds from the ultraviolet region to the visible light region, and is attached with metal oxide and adsorbent, or metal oxide or adsorption One of the materials is attached,
An electric vacuum cleaner , comprising: a light source that is disposed so as to face the deodorizing member from the electric blower toward the dust collecting unit and that irradiates the deodorizing member . The deodorizing member has a predetermined angle with respect to an irradiation axis of the light source.
The vacuum cleaner according to item 1 . The vacuum cleaner according to claim 1 or 2, wherein the dust collecting part is installed so as to be detachable in a substantially vertical direction, and the deodorizing member is installed in a concave part of a vacuum cleaner main body . The deodorizing member is provided in a state inclined at a predetermined angle with respect to the bottom surface of the main body housing,
4. The device according to claim 1, wherein the dust collector is exposed from the outside with the dust collecting portion removed.
The electric vacuum cleaner according to claim 1 .

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