JP2012083071A5 - - Google Patents

Description

Air conditioner indoor unit

  The present invention relates to an indoor unit of an air conditioner.

  Conventionally, an indoor unit of an air conditioner is pivotally supported by a suction panel to conceal the suction port in the first state, half-open in the second state, fully open in the third state, and back in the fourth state A plurality of suction louvers are arranged up and down so as to rotate until the front side faces obliquely upward, and a housing portion is continuously formed on the rear surface of the suction louver so that the suction port is closed in the second state. When the filter is detachably accommodated and the air cleaning operation is performed, the suction louver is set to the second state, and when performing the cooling operation or the heating operation, the suction louver is set to the third state, and the filter The invention which makes the said suction louver the said 4th state when inserting / removing is disclosed (for example, refer patent document 1).

JP 2001-147030 A (page 5, FIG. 2)

  However, in the conventional air conditioner indoor unit, when the air cleaning operation is performed, since the opening area of the suction port becomes narrow, the ventilation resistance when passing through the suction port increases, and the fan motor input increases. There was a problem that energy-saving efficiency deteriorated.

  The present invention has been made to solve the above-described problems, and provides an indoor unit that can efficiently remove dust depending on the configuration of the indoor unit of the air conditioner and the arrangement position of the air purifying filter.

An indoor unit of an air conditioner according to the present invention is disposed in front of the cross flow fan, a heat exchanger having a bent portion that is convex on the opposite side of the cross flow fan, located in front of the heat exchanger A structure, a first filter that is disposed above the heat exchanger and collects dust contained in air taken from the outside, and is disposed between the structure and the bent portion, and the dust And a second filter for collecting smaller dust.

An indoor unit of an air conditioner of the present invention is disposed in front of a cross flow fan, and includes a heat exchanger having a bent portion that protrudes on the opposite side of the cross flow fan, and a structure of the bent portion and the front structure. By arranging the second filter between them, air can be efficiently cleaned.

Sectional drawing which shows the whole indoor unit of the air conditioner which concerns on Embodiment 1 of this invention. The figure which shows the honey-comb filter which comprises the air purifying filter of the air conditioner which concerns on Embodiment 1 of this invention. Sectional drawing which shows the whole indoor unit of the air conditioner which concerns on Embodiment 2 of this invention. The figure which shows the honey-comb filter which comprises the air purifying filter of the air conditioner which concerns on Embodiment 2 of this invention. The perspective view which shows the air purifying filter which concerns on Embodiment 2 of this invention. The perspective view which shows the fixing position to the indoor unit of the air conditioner of the air purifying filter which concerns on Embodiment 2 of this invention. The perspective view of the state which removed the air purifying filter which concerns on Embodiment 2 of this invention from the indoor unit.

[Embodiment 1]
1 to 3 illustrate an indoor unit of an air conditioner according to Embodiment 1 of the present invention. FIG. 1 is a sectional view showing the indoor unit of the air conditioner, and FIG. 2 shows an air purifying filter. FIG. 2 (a) is an enlarged view of the air purification filter shown in FIG. 1, FIG. 2 (b) is an AA cross-sectional view of FIG. 2 (a), and FIG. The BB sectional view of Drawing 2 (b) is shown, respectively. Each figure is drawn schematically, and the shape and size of each member are not limited to the illustrated form. Moreover, in each figure, the same code | symbol is attached | subjected to the same part or an equivalent part, and a part of description is abbreviate | omitted.

  An indoor unit 1 of an air conditioner shown in FIG. 1 is attached to a wall of a room installed mainly to air-condition room air. The front surface of the indoor unit 1 is covered with the design panel 2, the upper surface is covered with the grill 3, and the suction port 4 covered with the grill 3 is provided from the upper front surface of the indoor unit 1 to the upper surface. An air outlet 5 whose opening direction and size are controlled by a vertical airflow direction variable vane 6 is provided from the front lower stage to the lower surface of the indoor unit 1. An air path leading to 5 is formed. A pre-filter 7 for removing dust from passing indoor air sucked into the indoor unit 1 is provided so as to cover the suction port 4 on the upper surface of the indoor unit 1. Inside the indoor unit 1, the passage room air has a finer pore on the downstream side of the pre-filter 7 and captures dust smaller than the dust captured by the pre-filter 7, and passes through the interior of the indoor unit 1. An air purifying filter 8 for purifying air, a heat exchanger 9 for exchanging heat with the passing room air, and a cross flow fan 10 are arranged on the downstream side of the heat exchanger 9. A prefilter cleaning device 11 that cleans the prefilter 7 is disposed along the design panel 2 between the heat exchanger 9 and the design panel 2. The upstream side of the cross flow fan 10 forms a suction air passage for the passing room air, and the downstream side of the cross flow fan 10 forms a blowout air passage defined by the nozzle portion 12 and the box portion 13.

  The prefilter 7 is disposed so as to cover the entire surface of the suction port 4 and is supported by a prefilter frame 7a. Since the pre-filter frame 7a is formed of a flexible material, the pre-filter 7 is formed in a flat plate shape at the time of molding, but when mounted on the indoor unit 1, an inverted U-shape as shown in FIG. It is held in a curved shape having a vertical cross section.

The heat exchanger 9 includes a front-side heat exchanger 9a disposed from the front to the top of the cross flow fan 10, and a back-side heat exchange disposed behind the front-side heat exchanger 9a and disposed above the cross flow fan 10. And a container 9b. The front-side heat exchanger 9a is bent at a bent portion 14 provided in the vicinity of the center in the vertical direction so that the side opposite to the cross flow fan 10, that is, the design panel 2 side is convex. The lower heat exchanger is disposed substantially vertically, and the heat exchanger above the bent portion 14 is disposed so as to incline from the front toward the rear and upward. The back-side heat exchanger 9b is disposed from the front end portion above the front-side heat exchanger 9a toward the back side.
The bent portion 14 is not limited to one formed by bending one front heat exchanger 9a, and a plurality of heat exchangers may be arranged such that the cross flow fan side is a valley and the opposite side is a mountain. Alternatively, the cross flow fan side may be flat and the opposite side may be raised.

The pre-filter cleaning device 11 has a built-in motor, removes dust from the rotary output device (not shown) provided so as to be positioned between the pre-filter 7 and the pre-filter 7, and this dust. It is comprised from the dust collection | recovery part 11a which accumulates. The dust collecting unit 11a is provided with a brush 11b at the top, and the periphery of the brush 11b is open.
The rotation output device incorporates a mechanism that reciprocally swings 180 degrees in conjunction with the rotation of the filter drive gear 11c by a transmission mechanism such as a motor and a gear. This is, for example, a mechanism that repeats the forward movement by connecting the forward rotation gear and the reverse gear and the reverse movement by disconnecting the forward rotation gear and the reverse gear, or the forward movement by connecting the forward gear and this gear. And a mechanism that repeats the backward movement using the reverse force of the flywheel provided in advance. When the rotation output device is driven, the filter drive gear 11c rotates. As a result, the pre-filter 7 moves around the filter drive gear 11c in the direction of the dashed arrow in FIG.
When the pre-filter 7 is moved in the direction of the broken line arrow in FIG. 1 by the rotation output device, the dust captured by the pre-filter 7 is collected by the dust collecting unit 11a by the contact between the brush 11b and the outer surface of the pre-filter 7. It is dropped and collected.
The dust collection part 11a is provided immediately behind the design panel 2, and when the design panel 2 is removed, the dust collection part 11a is exposed and can be taken out. When the user collects dust in the dust collecting unit 11a, the user can remove the dust and periodically discard the accumulated dust.
As described above, the dust adhering to the prefilter 7 is periodically removed, so that the interior of the indoor unit 1 can be kept clean, and the user can save time and effort for cleaning the prefilter 7. Further, since the prefilter cleaning device 11 prevents dust from accumulating on the prefilter 7, it is possible to prevent the prefilter 7 from being clogged due to the accumulation of dust and causing energy loss.

The air purifying filter 8 has a substantially horizontal direction between a frontmost position of the heat exchanger 9a on the front side and a dust collecting unit 11a that is a structure immediately in front of the heat exchanger 9a on the front side. Is held in. In the first embodiment, the frontmost portion of the front-side heat exchanger 9a is the vicinity of the bent portion 14 of the front-side heat exchanger 9a.
Further, when the air purifying filter 8 is disposed below the dust collecting portion 11a, particularly the brush 11b, the air purifying filter 8 captures dust that spills when the brush 11b removes the dust captured by the prefilter 7. Can do.

  In addition, in this Embodiment 1, although the indoor unit 1 provided with the dust collection | recovery part 11a is demonstrated, in the case of the indoor unit 1 without the dust collection | recovery part 11a, the arrangement place of the air purifying filter 8 is front side heat It is set as the structure provided between the bending part 14 and the design panel 2 of the exchanger 9a. That is, the structure located in front of the front heat exchanger 9a refers to the dust collection unit 11a, the design panel 2, or a control board (not shown), and is not limited to the dust collection unit 11a.

  2A is an enlarged view of the air purification filter 8 shown in FIG. 1, FIG. 2B is a cross-sectional view taken along the line AA in FIG. 2A, and FIG. 2C is a cross-sectional view taken along the line B- in FIG. B sectional views are shown respectively. The air cleaning filter 8 has a honeycomb structure configured by connecting a plurality of through holes 8a penetrating in order to suppress ventilation resistance. The ventilation hole 8a has a triangular shape in the cross-sectional view of FIG. 2C, but may be a polygonal shape such as a square or a hexagon or a circular shape. Here, the ventilation hole 8 a of the air purification filter 8 penetrates in a substantially vertical direction while being held by the indoor unit 1. The air purifying filter 8 plays a role of purifying air that passes through the air purifying filter 8 from upstream to downstream. In particular, in the first embodiment, air that flows downward from vertically above is purified.

For the honeycomb filter 8b constituting the honeycomb structure of the air cleaning filter 8, for example, an inorganic or organic base material such as ceramic paper, glass fiber, aluminum, polypropylene, polyolefin, activated carbon fiber, Japanese paper, or various nonwoven fabrics is used. Fine pores smaller than the pores of the pre-filter 7 are formed on the surface of the honeycomb filter 8b, and dust contained in the passing air is adsorbed by the pores.
In order to add a deodorizing action / antibacterial action to the air purification filter 8, for example, a catalyst such as titanium, manganese, silver, palladium, platinum, cobalt, copper is attached to the surface of the honeycomb filter 8b. Further, an adsorbent such as zeolite, silica, alumina, or activated carbon is attached to the substrate surface in order to add an adsorption action / water absorption action to the honeycomb filter 8b. Further, in order to add a dust collecting action to the honeycomb filter 8b, there is a case where an electric charge is kneaded to form an electret filter. In addition, an enzyme, an inorganic salt, or an organic salt may be attached to the honeycomb filter 8b to add an allele substance reducing action.

  Next, the operation will be described. In the air conditioner configured in this way, first, when the power is turned on and the compressor (not shown) compresses and discharges the refrigerant, the refrigerant flows into the heat exchanger 9 of the indoor unit 1 and crossflow When the fan 10 rotates, the room air sucked from the suction port 4 removes dust through the prefilter 7, and then a part of the air is located above the bent portion 14 in the front side heat exchanger 9a. After passing through the rear heat exchanger 9b and reaching the cross flow fan 10, the remaining air passes through the prefilter 7, and further passes through the air purifying filter 8 and is then removed from the dust, and then below the bent portion 14. Passes through the front heat exchanger 9 a and reaches the cross flow fan 10.

  The air sucked from the suction port 4 is heat-exchanged with the refrigerant flowing through the heat exchanger 9 and then blown out from the air outlet 5 into the room. At this time, air is blown out in a direction corresponding to the position of the up / down airflow direction variable vane 6. The user can set the position of the up / down airflow direction variable vane 6 with the remote controller. Further, the indoor unit can automatically determine the position of the up-and-down wind direction variable vane 6 by detecting the temperature distribution in the room and the position of a person with an infrared sensor (not shown). Thereafter, the room air is again sucked from the suction port 4. Since this series of operations is repeated, the indoor air is removed from the dust as a result.

  Here, attention is focused on the flow of air passing through the air cleaning filter 8. As shown in FIG. 1, the nozzle portion 12 extends from the lower portion of the design panel 2 of the indoor unit 1 to immediately before the front lower portion of the cross flow fan 10. The box portion 13 is provided from the rear upper side of the cross flow fan 10 to the lower portion of the nozzle portion 12 while expanding the air passage. By arranging the nozzle part 12 and the box part 13 in this way, the center of the vortex can be generated in the lower part of the cross flow fan 10, and the air passing through the heat exchanger 9 rotates clockwise around the center of the vortex. And the air is blown out from a blowout air passage that is divided by the nozzle portion 12 and the box portion 13. As described above, the air sucked from the suction port 4 of the indoor unit 1 of the air conditioner is directed to the heat exchanger 9, but the air flowing outside the front heat exchanger 9a toward the lower portion is the front heat exchanger. The region A in which the distance between 9a and the dust collecting portion 11a is the shortest, in the first embodiment, the current flows in the vicinity of the bent portion 14 and is rectified in a substantially vertical direction while increasing the wind speed. In FIG. 1, air passing through the region A is indicated by a solid line arrow. In addition, since it is the structure which covers the design panel 2 to the blower outlet 5, and is a structure which does not provide a suction inlet in the front lower part of the indoor unit 1, indoor air is directly inhaled toward the lower part of the front side heat exchanger 9a from the exterior. There is nothing.

  As described above, in the indoor unit 1 of the air conditioner according to the first embodiment, by arranging the air purifying filter 8 in the region A where the distance between the front heat exchanger 9a and the dust collection unit 11a is the smallest, Since the air that has been compressed and the wind speed has increased passes through the air cleaning filter 8, dust can be efficiently removed. Further, the air purification filter 8 can be downsized.

  Furthermore, the air purification filter 8 has a honeycomb structure, and the direction in which the ventilation holes 8a penetrate is substantially vertical, so that the direction of the ventilation holes 8a and the flow direction of the air completely coincide with each other. be able to. Although the velocity of the rectified air rectified and rectified in this region A increases, the direction of the air flow coincides with that of the ventilation hole 8a, so that the ventilation resistance when the air passes through the air cleaning filter 8 is almost the same. Does not increase. Although the air cleaning capability of the air cleaning filter 8 is related to the passing air speed, the above arrangement can suppress an increase in the ventilation resistance even if the speed is increased. Capability can be increased.

[Embodiment 2]
In the first embodiment, the configuration in which the air purifying filter 8 is arranged substantially horizontally has been described. In the second embodiment, the user can easily take out the air purifying filter by arranging the air purifying filter at an inclination. A configuration that can increase the dust removal capability of the air purifying filter will be described.

  3 to 7 illustrate an air conditioner indoor unit according to Embodiment 2 of the present invention, and FIG. 3 is a cross-sectional view illustrating the entire indoor unit of the air conditioner according to Embodiment 2. 4 is a view showing a honeycomb filter constituting the air purifying filter, in which FIG. 4 (a) is an enlarged view of the air purifying filter 8 shown in FIG. 3, and FIG. 4 (b) is an A in FIG. 4 (a). -A sectional view, FIG. 4 (c) is a BB sectional view of FIG. 4 (b), FIG. 5 is a perspective view showing an air purifying filter, and FIG. 6 is fixing the air purifying filter to an indoor unit of an air conditioner. FIG. 7 is a perspective view showing a state in which the air purifying filter is removed from the indoor unit 1. Each figure is drawn schematically, and the shape and size of each member are not limited to the illustrated form. Moreover, in each figure, the same component as Embodiment 1 is attached | subjected, and description is abbreviate | omitted.

  In the second embodiment, the configuration is almost the same as in the first embodiment. However, as shown in FIG. 3, the air purifying filter 15 is tilted forward and downward in the region A and held in the indoor unit 1. ing. Region A is in the vicinity of the bent portion 14 as in the first embodiment, and is the region where the air path between the front heat exchanger 9a and the dust collecting portion 11a is the narrowest. In this region A, part of the air that has passed through the suction port 4 and the prefilter 7 is contracted, and the wind speed in the vertically downward direction increases. In FIG. 3, the air passing through the region A is indicated by a solid arrow.

Moreover, as shown in FIG. 4, the air purifying filter 15 has a honeycomb structure configured by connecting a plurality of through holes 15a penetrating in order to suppress ventilation resistance. As shown in FIGS. 5 (a) and 5 (c), a plurality of ventilation holes 15a are provided with an inclination, and each ventilation hole 15a penetrates in the vertical direction. The ventilation hole 15 a of the air cleaning filter 15 is fixed in a direction that penetrates in a substantially vertical direction while being held in the indoor unit 1.
As shown in FIG. 6, the air purification filter 15 includes a honeycomb filter 15b and an air purification filter frame 15c. A knob 15d that can be held by the user is provided at the front end of the air purification filter frame 15c. Moreover, the protrusion part 15e is provided in the right-and-left both ends of the air purifying filter frame 8a.

  The indoor unit 1 according to the second embodiment includes two dust collection portions 11a and two air purification filters 15 on the left and right in the longitudinal direction. FIG. 7 shows the design panel 2 and the dust collection portions 11a on the left and right. The state which removed the dust collection part 11a on the left side is shown in figure. In FIG. 7, the front end portion including the knob 15d of the air purifying filter 15 disposed behind the dust collecting portion 11a is exposed. Since the knob 15d is exposed by removing the design panel 2 and the dust collecting part 11a, the user can remove the air purifying filter 15 from the indoor unit 1 by holding the knob 15d and pulling it diagonally forward and downward. it can.

  FIG. 7 shows a state where the air purifying filter 15 is removed from the indoor unit 1. An air purifying filter holding rail 16 for fixing the air purifying filter 15 is provided in the front-rear direction of the indoor unit 1 on the side wall at the end in the longitudinal direction of the indoor unit 1 and the central part in the longitudinal direction of the indoor unit 1. The air purifying filter holding rail 16 is provided to be inclined from the rear to the front, and the front end portion has an open shape. Projections 8e provided on the left and right end faces of the air purification filter frame 15c are inserted into the air purification filter fixing rail 16 to fix the air purification filter 15. The air purification filter 15 is held inside the indoor unit 1 by an air purification filter holding rail 16 provided on the upstream side of the heat exchanger 9. The user can put the protrusion 15e of the air purifying filter frame 15c with the knob 15d along the air purifying filter holding rail 16 and put the air purifying filter 15 in and out from the front side of the indoor unit 1 in an oblique direction.

  As described above, the indoor unit according to Embodiment 2 is configured to be easily detached from the indoor unit 1 and attached when the user holds the knob 15d of the air purifying filter 15 and pulls it diagonally downward. In general, the indoor unit is installed at a height of about 1.8 m on the wall surface, so that the operation in the diagonally downward direction can be easily performed. Therefore, with the above configuration, maintenance and filter replacement are easy, and usability is improved. Moreover, since the air purifying filter 15 is inclined downward and is fixed to the indoor unit 1, the area of the air purifying filter can be made larger than when the air purifying filter 15 is fixed to the indoor unit 1 in the horizontal direction. And the air cleaning capability can be further increased. Further, the air purifying filter 15 is held between a frontmost heat exchanger 9a and a dust recovery unit 11a which is a structure immediately in front of the front heat exchanger 9a. Since the ventilation hole 15a of the air purification filter 15 is fixed to the indoor unit 1 so as to penetrate in a substantially vertical direction, as in the first embodiment, the air purification capability is suppressed while suppressing the energy loss due to the increase in ventilation resistance. Can be increased.

  The present invention can be used for an indoor unit of an air conditioner attached to an indoor wall.

DESCRIPTION OF SYMBOLS 1 Indoor unit, 2 design panel, 3 grill, 4 suction inlet, 5 blower outlet, 6 up-and-down air direction variable vane, 7 prefilter 7, 7a prefilter frame, 8 air purifying filter, 8a ventilation hole, 9 heat exchanger, DESCRIPTION OF SYMBOLS 10 Cross flow fan, 11 Pre filter cleaning apparatus, 11a Dust collection part, 11b Brush, 11c Filter drive gear, 12 Nozzle part, 13 Box part, 14 Bending part, 15 Air purifying filter, 15a Ventilation hole, 15b Honeycomb filter, 15c Air purifying filter frame, 15d knob, 15e protrusion, 16 air purifying filter holding rail.

Claims (5)

A heat exchanger disposed in front of the cross flow fan and having a bent portion that is convex on the opposite side of the cross flow fan;
A structure disposed in front of the heat exchanger;
A first filter that is disposed above the heat exchanger and collects dust contained in air taken from outside;
A second filter that is disposed between the structure and the bent portion and collects dust smaller than the dust;
Air conditioner indoor unit equipped with. The indoor unit of an air conditioner according to claim 1, wherein the second filter has a honeycomb structure having a plurality of ventilation holes, and the direction of the ventilation holes is a substantially vertical direction. The indoor unit of an air conditioner according to claim 1 or 2, wherein the second filter is provided to be inclined forward and downward. The indoor unit of an air conditioner according to any one of claims 1 to 3, wherein the structure is removable, and the second filter has a grip portion at a front end. The structure is a dust collecting unit that removes dust collected by the first filter and collects it from an upper opening, wherein the second filter is below the opening of the dust collecting unit. The indoor unit of the air conditioner according to any one of claims 1 to 4.