JP6480700B2 - Air blower - Google Patents

Description

  BACKGROUND OF THE INVENTION Field of the Invention The present invention relates to a blower that sucks in outdoor air and delivers it indoors.

  When building a building such as a house, it is obligated to always install a ventilation system to prevent sickness and health damage such as allergy. As a constant ventilation facility, a ventilation fan for exhausting indoor air to the outside and a blower for delivering outdoor air to the room can be mentioned.

  Patent Document 1 discloses a blower for delivering outdoor air indoors. In this air blower, the outside air suction port is opened at the back of the main body case installed on the indoor wall surface, and the air outlet is opened at the front. The outdoor air inlet and the air outlet are connected by a blower duct, and a blower is disposed in the blower duct. Moreover, the generator housing part which distribute | arranged the ion generator to the downward direction of the front surface of a main body housing | casing is provided. An ion delivery port is opened at the front of the generator housing, and an inside air suction port is opened at the bottom.

  In the air blower of the above configuration, when the air blower and the ion generator are driven, outdoor air flows from the outside air inlet into the main body casing and is delivered from the air outlet. This can ventilate indoors and prevent health hazards.

  In addition, a suction action occurs in the ion delivery port disposed below the blowout port by the air flow delivered from the blowout port. For this reason, indoor air flows into the generator housing from the inside air suction port, and the ions generated by the ion generator are sent out from the ion outlet. Ions delivered from the ion delivery port are diffused indoors to be disinfected or deodorized, and health damage can be further prevented.

JP 2005-214596 A (Page 8-Page 12 FIG. 1)

  However, according to the conventional blower, the air flows through the inside of the generator casing by the suction action of the air flow delivered from the outlet, and the ions are delivered. For this reason, the amount of air flowing in the generator casing is small, and a sufficient amount of ions can not be delivered indoors. Therefore, indoor sterilization and deodorization become inadequate, and there was a problem that the prevention effect of health damage was small.

  An object of this invention is to provide the air blower which can improve the prevention effect of health damage.

  In order to achieve the above object, according to the present invention, an external air suction portion into which outdoor air flows in is formed on a back wall installed on an indoor wall surface, and a housing in which an internal air suction port and an air outlet are open facing the indoor A fan casing opening an air inlet facing the outside air suction portion and an air outlet connected to the air outlet; an air blower disposed in the fan casing; a filter disposed opposite to the air inlet; And an ion generating device for generating ions and discharging between the blower and the blowout port, and the air flowing from the outside air suction portion and the inside air suction port by the drive of the blower through the filter. It is characterized by being guided to the intake port.

  According to this configuration, when the blower and the ion generator are driven, outdoor air flows into the housing from the outside air suction portion provided on the back wall of the housing, and indoor air flows into the housing from the inside air suction port. Do. The outdoor and indoor air flowing into the housing pass through the filter and circulate in the fan casing. The air flowing in the fan casing contains ions generated by the ion generator and is delivered from the outlet.

  Further, according to the present invention, in the air blower of the above configuration, a gap is provided between the back wall and the filter, and the inside air suction port is opened in a peripheral wall of the housing, and flows into the inside of the housing from the inside air suction port. Air is guided to the filter through the gap.

  Further, the present invention is characterized in that in the air blower of the above-mentioned configuration, the filter collects 94% or more of PM2.5.

  Further, according to the present invention, in the air blower of the above configuration, the shutter for opening and closing the outside air suction portion is provided.

  Further, the present invention is characterized in that the shutter is provided with a heat insulating material or an antibacterial agent in the air blower of the above configuration.

  Further, the present invention provides the air blower of the above configuration, comprising a holding member formed in a frame shape surrounding the circumferential surface of the filter to hold the filter, and the outlet through the opening in the peripheral wall of the casing. The filter is detachably formed with the holding member, and the holding member has a protrusion which forms a space adjacent to the filter inside.

  Furthermore, the present invention is characterized in that, in the air blower of the above-described configuration, the holding member has a handle portion that is gripped through the outlet.

  Further, according to the present invention, in the air blower of the above-mentioned configuration, a heat insulating material is provided on the back wall.

  Further, the present invention is characterized in that, in the air blower of the above-mentioned configuration, a heat insulating material or an antibacterial agent is provided on a wall surface of the fan casing.

  According to the present invention, the air which has flowed in from the outside air suction portion into which the outdoor air flows in and the inside air suction port facing the room is guided to the air suction port of the fan casing through the filter. As a result, dust contained in the outdoor and indoor air is collected by the filter, and clean air is delivered indoors for ventilation. Moreover, the volume of the airflow carrying the ions can be increased, and the ions delivered indoors increase to improve the sterilization effect and the deodorizing effect. Therefore, the prevention effect of health damage can be improved. At this time, since the air flow ratio between the outdoor air and the indoor air does not change due to the clogging of the filter, it is possible to prevent the insufficient ventilation due to the user's mistake.

The perspective view which shows the air blower of 1st Embodiment of this invention. Front view showing a blower according to a first embodiment of the present invention Side surface sectional view showing a blower according to a first embodiment of the present invention Bottom cross-sectional view showing the air blower of the first embodiment of the present invention Front view showing a filter of a blower according to a first embodiment of the present invention Bottom cross-sectional view showing a blower according to a second embodiment of the present invention Bottom cross-sectional view showing a state in which the shutter of the air blower of the second embodiment of the present invention is opened The perspective view which shows the air blower of 3rd Embodiment of this invention. Front view showing a filter of a blower according to a third embodiment of the present invention

First Embodiment
Hereinafter, embodiments of the present invention will be described with reference to the drawings. 1 to 4 show a perspective view, a front view, a side sectional view and a bottom sectional view of the air blower of the first embodiment. A ventilation port 51 is opened in an outer wall 50 of a building or the like, and a muffling box 41 covering the ventilation port 51 is attached to a wall on the outdoor side of the outer wall 50. The blower 1 for covering the ventilation port 51 is attached to the wall surface of the outer wall 50 on the indoor side.

  An exhaust duct 42 inserted into the ventilation port 51 is provided on the back of the muffling box 41 so as to project therefrom. A suction port 43 is opened at one end in the left-right direction on the bottom wall 41 a of the muffling box 41, and partition plates 44 and 45 are provided in the muffling box 41. A sound absorbing material (not shown) such as a sponge is attached to the inner wall of the muffling box 41 and the partition plates 44, 45.

  The partition plate 44 is horizontally disposed with a gap at an end separated from the suction port 43 in the left-right direction, and partitions the upper portion and the lower portion of the muffling box 41 where the exhaust duct 42 is disposed. A plurality of partition plates 45 are provided, standing from the bottom wall 41 a and the partition plate 44 and disposed in a staggered manner.

  Outdoor noise entering the muffling box 41 from the suction port 43 proceeds in a meandering manner by the partition plates 44 and 45. As a result, the muffling box 41 mutes the noise by the sound absorbing material, and the intrusion of the noise into the room through the ventilation port 51 is prevented.

  The blower 1 is covered by a housing 2, and a back wall 2 a of the housing 2 is installed on an indoor wall surface. In the back wall 2a, a suction duct 3 which is internally fitted to the ventilation opening 51 and externally fitted to the exhaust duct 42 of the muffling box 41 is provided so as to protrude. The suction duct 3 forms an outdoor air suction portion into which outdoor air flows. The open air suction portion may be formed by an opening provided in the back wall 2 a so as to face the ventilation opening 51.

  A heat insulating material 18 such as an antibacterial felt is attached to the outer surface of the back wall 2a. When low temperature outdoor air flows into the housing 2 in winter or the like, the heat insulating material 18 prevents dew condensation on the rear surface of the housing 2. This makes it possible to prevent the growth of mold and fungus due to condensation between the housing 2 and the outer wall 50. In addition, by the heat insulating material 18 having the antimicrobial property, it is possible to more reliably prevent the growth of mold and fungus. The heat insulating material 18 may be provided on the inner surface of the back wall 2a.

  At the front of the bottom wall of the housing 2, an indoor air suction port 4 facing the room is opened, and at the rear, an outlet 7 of a filter 20 described later is opened. An air outlet 5 facing the room is opened in the upper wall of the housing 2 and a louver 6 for opening and closing the air outlet 5 is pivotally supported. The opening direction of the air flow sent out from the blowout port 5 is varied according to the opening angle of the louver 6.

  A fan casing 10 in which a blower 11 composed of a sirocco fan is installed is disposed in the housing 2. The fan casing 10 is disposed apart from the back wall 2 a by the support of the support portion 12 erected on the back wall 2 a of the housing 2. In the fan casing 10, an inlet 10a opens in the axial direction of the blower 11 facing the suction duct 3, and an outlet 10b connected to the outlet 5 opens at the upper end.

  A heat insulating material or an antibacterial agent may be provided on the wall surface of the fan casing 10. When low temperature outdoor air flows into the fan casing 10, the heat insulating material can prevent condensation on the outer surface of the fan casing 10. In addition, it is possible to prevent the growth of molds and fungi due to condensation on the outer surface of the fan casing 10 by an antibacterial agent such as an antibacterial paint.

  An ion generator 17 for emitting ions is attached to the fan casing 10 between the blower 11 and the air outlet 5. The ion generator 17 is detachable via an outlet (not shown) provided on the side wall of the housing 2. Thereby, exchange and maintenance of the ion generator 17 can be performed.

The ion generator 17 has a pair of discharge electrodes (not shown), and corona discharge is generated by application of a high voltage composed of an alternating current waveform or an impulse waveform. A positive voltage is applied to one of the discharge electrodes, and the corona discharge ionizes water molecules in the air to generate hydrogen ions. These hydrogen ions cluster with water molecules in the air by solvation energy. As a result, positive ions of air ions consisting of H ⁺ (H ₂ O) m (m is 0 or any natural number) are released.

A negative voltage is applied to the other discharge electrode, and corona discharge ionizes oxygen molecules or water molecules in the air to generate oxygen ions. The oxygen ions cluster with water molecules in the air by solvation energy. ^{_{Thus, O 2 - (H 2 O}} ) n (n is an arbitrary natural number) negative ion air ions consisting of is released. H ⁺ (H ₂ O) m and ^{_{O 2 - (H 2 O)}} n surrounds these aggregated on the surface of airborne bacteria and odor components in the air.

Then, as shown in the formulas (1) to (3), by collision, [· OH] (hydroxyl radical) and H ₂ O ₂ (hydrogen peroxide) which are active species are aggregated and formed on the surface of a microorganism or the like. Destroy airborne bacteria and odorous components. Here, m 'and n' are arbitrary natural numbers. Therefore, indoor sterilization and deodorization can be performed by generating positive ions and negative ions and sending them from the blowout port 5.

_{^{H + (H 2 O) m}} + O 2 - (H 2 O) n → · OH + 1 / 2O 2 + (m + n) H 2 O ··· (1)
_{^{H + (H 2 O) m}} + H + (H 2 O) m '+ O 2 - (H 2 O) n + O 2 - (H 2 O) n'
→ 2 · OH + O ₂ + (m + m '+ n + n') H ₂ O (2)
_{^{H + (H 2 O) m}} + H + (H 2 O) m '+ O 2 - (H 2 O) n + O 2 - (H 2 O) n'
→ H ₂ O ₂ + O ₂ + (m + m '+ n + n') H ₂ O (3)

  A filter 20 is disposed at the rear of the fan casing 10 so as to face the air inlet 10a. The filter 20 is a high performance pleated type corresponding to PM 2.5, and can collect PM 2.5 at 94% or more. The filter 20 may be formed by a HEPA filter.

  FIG. 5 shows a front view of the filter 20. FIG. The filter 20 is formed in a rectangular shape in a plan view, and is held by a frame-shaped holding member 21 surrounding the circumferential surface. A grid-like crosspiece 21a for mounting the filter 20 is provided at one end of the holding member 21 in the thickness direction, and a claw 21b for locking the filter 20 is provided at the other end.

  Further, a handle portion 21 d is provided to protrude on one side of the circumferential surface of the holding member 21. On both sides of the handle portion 21d, a U-shaped protrusion 21c protruding from the circumferential surface of the filter 20 is provided. A space 22 directly adjacent to the filter 20 is formed inside the protrusion 21 c.

  As shown in FIG. 3, the filter 20 held by the holding member 21 is inserted through the outlet 7 that is opened to the lower surface of the housing 2 and locked to the fan casing 10. At this time, a gap S is formed between the filter 20 mounted in the housing 2 and the back wall 2a. At the time of replacement or cleaning of the filter 20, the handle 20d is held via the outlet 7 to take out the filter 20. Further, the filter 20 can be easily removed from the holding member 21 by putting the finger inserted into the space 22 on the filter 20.

  In the blower 1 of the above-described configuration, when the blower 11 and the ion generator 17 are driven, outdoor air flows into the muffling box 41 through the suction port 43 as indicated by the arrow A1. The air flowing through the muffling box 41 flows into the housing 2 through the exhaust duct 42 and the suction duct 3 as shown by the arrow A 2, and is guided to the filter 20 facing the suction duct 3.

  Further, indoor air flows into the housing 2 through the inside air suction port 4 as shown by the arrow B1. The air that has flowed into the housing 2 from the inside air suction port 4 flows laterally along the circumferential surface of the fan casing 10 and is guided to the filter 20 through the gap S as shown by the arrow B2.

  The air passing through the filter 20 is collected with dust including PM 2.5, and the air from which the dust is removed is guided to the air inlet 10 a and flows in the fan casing 10. The air flowing in the fan casing 10 contains ions generated by the ion generator 17 and is sent out indoors from the air outlet 5 as shown by the arrow C1.

  As a result, it is possible to ventilate by sending clean air from which dust is removed from the outdoors and indoors indoors. In addition, since the air sent from the blowout port 5 contains ions, it is possible to perform indoor sterilization and deodorization.

  At this time, since the ions are released between the blower 11 and the blowout port 5 by the ion generator 17, the volume of the air flow carrying the ions can be increased. For this reason, the ions generated by the ion generator 17 are sequentially carried to the air stream, and the neutralization and deactivation due to the retention of the ions are reduced. Thereby, the ion sent out indoors can be made to increase and a sterilizing effect and a deodorizing effect improve.

  Further, the air volume ratio between the outdoor air flowing into the housing 2 and the indoor air is a predetermined value (for example, 56% outdoor) depending on the opening area of the suction duct 3 and the inside air suction port 4 and the flow path resistance in the housing 2 , Indoors 44%). At this time, if a filter is provided in each of the suction duct 3 and the inside air suction port 4, the air volume ratio changes due to clogging. As a result, there is a risk that the user may misunderstand that ventilation is performed when indoor air is circulated without outdoor air being taken in, resulting in insufficient ventilation.

  However, since the outdoor and indoor air pass through the common filter 20, clogging of the filter 20 does not change the air volume ratio between the outdoor air and the indoor air. As a result, when air is blown from the blowout port 5, a predetermined amount of outdoor air is taken in, and it is possible to prevent the insufficient ventilation due to the user's misidentification.

  According to the present embodiment, the air flowing in from the suction duct 3 (outside air suction portion) into which outdoor air flows in and the inside air suction port 4 facing indoors is guided to the air suction port 10 a of the fan casing 10 via the filter 20. As a result, dust contained in the outdoor and indoor air is collected by the filter 20, and clean air is delivered indoors for ventilation.

  Moreover, the volume of the airflow carrying the ions can be increased, and the ions delivered indoors increase to improve the sterilization effect and the deodorizing effect. Therefore, the effect of preventing health damage such as sick house and allergy can be improved. At this time, since the air volume ratio between the outdoor air and the indoor air does not change due to the clogging of the filter 20, the insufficient ventilation due to the user's misidentification can be prevented.

  Further, the air flowing in from the inside air suction port 4 opened in the peripheral wall of the housing 2 is guided to the filter 20 through the gap S provided between the back wall 2 a of the housing 2 and the filter 20. As a result, indoor air can be easily guided to the filter 20 facing the suction duct 3 into which outdoor air flows.

  In addition, since PM 2.5 is collected by 94% or more by the filter 20, health damage to the user can be further prevented.

  Also, the filter 20 is formed detachably with the frame-shaped holding member 21, and the holding member 21 has a projecting portion 21 c that forms the space 22 adjacent to the filter 20 inside. Thus, when replacing or cleaning the filter 20, the finger inserted into the space 22 can be put on the filter 20 to easily remove the filter 20.

  In addition, since the holding member 21 has the handle portion 20d which is gripped through the outlet 7, the filter 20 can be easily attached and detached from the housing 2.

  Further, since the heat insulating material 18 is provided on the back wall 2 a of the housing 2, dew condensation on the outer surface of the back wall 2 a can be prevented, and the generation of mold and fungus between the outer wall 50 and the housing 2 can be prevented. .

  Further, when a heat insulating material or an antibacterial agent is provided on the wall surface of the fan casing 10, it is possible to prevent condensation on the outer surface of the fan casing 10 or to prevent the growth of molds and fungi.

Second Embodiment
Next, FIG. 6 shows a bottom sectional view of the air blower 1 of the second embodiment. For convenience of explanation, the same parts as those in the first embodiment shown in FIGS. 1 to 5 described above are given the same reference numerals. In the present embodiment, a pair of shutters 19 for opening and closing the suction duct 3 is provided. The other parts are the same as in the first embodiment.

  The pair of shutters 19 are respectively pivoted on both sides of the inner end of the suction duct 3. As shown in FIG. 7, when the shutter 19 is opened, outdoor air flows into the housing 2 via the suction duct 3 and indoor air is received via the inside air suction port 4 as in the first embodiment. Flow into body 2 As a result, the shutter 19 can be opened at a predetermined time to ventilate the room.

  As shown in FIG. 6, when the shutter 19 is closed, the inflow of outdoor air is stopped, and the indoor air flows into the housing 2 through the inside air suction port 4 and is sent out from the blowout port 5. As a result, indoor air is circulated, and air cleaning by the filter 20 and sterilization and deodorization by ions can be performed.

  The shutter 19 may be provided with a heat insulating material or an antibacterial agent. When the shutter 19 is closed, the outer surface is in contact with low-temperature outdoor air and the inner surface is in contact with indoor air, so that the heat insulating material can prevent condensation on the inner surface of the shutter 19. In addition, it is possible to prevent the growth of mold and fungus due to condensation on the inner surface of the shutter 19 by an antibacterial agent such as an antibacterial paint.

  According to this embodiment, the same effect as that of the first embodiment can be obtained. In addition, since the shutter 19 for opening and closing the suction duct 3 (the outside air suction portion) is provided, indoor air can be circulated to perform air cleaning, sterilization, and the like. As a result, it is possible to reduce the frequency of hot outdoor air flowing indoors in summer and the frequency of cold outdoor air flowing indoors in winter. Therefore, the indoor living environment can be improved.

  In addition, when the shutter 19 is provided with a heat insulating material or an antibacterial agent, it is possible to prevent condensation on the inner surface of the closed shutter 19 or to prevent the growth of mold and bacteria.

Third Embodiment
Next, FIG. 8 is showing the perspective view of the air blower 1 of 3rd Embodiment. For convenience of explanation, the same parts as those in the first embodiment shown in FIGS. 1 to 5 described above are given the same reference numerals. In the present embodiment, the inside air suction port 4 is provided on the side wall of the housing 2 and the shape of the holding member 21 of the filter 20 is different from that of the first embodiment. The other parts are the same as in the first embodiment.

  When the blower 11 and the ion generator 17 (both shown in FIG. 3) are driven, indoor air flows into the housing 2 from the inside air suction port 4 opened in the side wall of the housing 2. The air flowing into the housing 2 from the inside air suction port 4 flows along the side surface of the filter 20 and is guided to the filter 20 through the gap S (see FIG. 3). The air that has passed through the filter 20 contains the ions generated by the ion generator 17 and is delivered from the outlet 5.

  FIG. 9 shows a front view of the filter 20. FIG. On one side of the holding member 21 holding the filter 20, a U-shaped protrusion 21c protruding from the circumferential surface of the filter 20 is provided. A space 22 directly adjacent to the filter 20 is formed inside the protrusion 21 c. Further, the protrusion 21 c forms a handle 21 d which is gripped when the filter 20 is attached and detached.

  When replacing or cleaning the filter 20, the filter 20 is taken out by gripping the handle portion 21d via the outlet 7 (see FIG. 8). Further, the filter 20 can be easily removed from the holding member 21 by putting the finger inserted into the space 22 on the filter 20.

  According to this embodiment, the same effect as that of the first embodiment can be obtained. The inside air suction port 4 may be provided on the side wall and the bottom wall of the housing 2. Further, the same shutter 19 (see FIG. 6) as that of the second embodiment may be provided in the present embodiment.

  ADVANTAGE OF THE INVENTION According to this invention, it can utilize for the air blower which inhales the outdoor air and it sends out indoors.

DESCRIPTION OF SYMBOLS 1 air blower 2 housing 2a back wall 3 suction duct 4 inside air suction inlet 5 air outlet 6 louver 7 outlet 10 fan casing 10a air inlet 10b air outlet 11 blower 17 ion generator 18 heat insulating material 19 shutter 20 filter 21 holding member 21a Crosspiece 21b Claw 21c Protrusion 21d Handle 22 Space 41 Silencer box 42 Exhaust duct 43 Suction port 44, 45 Partition plate 50 Outer wall 51 Ventilation port S Clearance

Claims (4)

An outdoor air suction portion into which outdoor air flows in is formed on a back wall installed on a wall surface indoors, and a case having an indoor air suction port and an air outlet facing the indoor, and an air inlet facing the outdoor air suction portion A fan casing that opens the air outlet and an exhaust port connected to the air outlet, an air blower disposed in the fan casing, a filter disposed to face the air inlet, and ions to generate the air blower and the air outlet. And an ion generator for discharge between the outlet and the outlet, wherein the intake port is opened in the axial direction of the blower, and the filter is disposed to face the intake port in the axial direction,
A gap is provided between the back wall and the filter, and the inside air suction port opens forward of the filter on the peripheral wall of the housing and communicates with the gap on the outer peripheral side of the filter,
The air flowing et al or the outside air inlet portion by the driving of the blower is guided to the intake port through said filter, through the air the gap flowing from the inside air inlet, the air inlet through the filter A blower characterized in that it is guided . The air blower according to claim 1, further comprising a shutter that opens and closes the outside air suction portion. The holding member is formed in a frame shape surrounding the circumferential surface of the filter to hold the filter, and the filter is detachably formed together with the holding member via an outlet opening in a peripheral wall of the housing. The air blower according to claim 1 or 2 , wherein the holding member has a protrusion which forms a space adjacent to the filter inward. The air blower according to any one of claims 1 to 3 , wherein the back wall is provided with a heat insulating material.

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