JP2014211248A - Air conditioner - Google Patents

Abstract

An air conditioner to which a filter can be suitably attached is provided.
A heat exchanger (8), a blower fan (9), and a filter disposed upstream of the heat exchanger (8) and the blower fan (9) are provided, and the filter is disposed in a vertical direction at least in front of a casing (12). The front filter 5 is configured to be detachable by sliding in the left-right direction of the housing 12. In addition, the electrical equipment box 4 is further provided on the front side of the housing 12 so as to cover a part of the side surface side of the front filter 5 when viewed from the front.
[Selection] Figure 6

Description

  The present invention relates to a separate air conditioner in which an indoor unit and an outdoor unit are connected by a refrigerant pipe.

  The air conditioner circulates indoor air to a heat exchanger of the indoor unit, and makes it conditioned air by overheating, cooling, dehumidifying functions, etc., and blows this into the room to make the indoor environment comfortable. The indoor unit of the air conditioner is equipped with a filter that removes dust in the circulating air, preventing dust from adhering to the heat exchanger and deteriorating heat exchange performance, and conditioned air blown out indoors. The dust is reduced, the room is made clean, and the resident can spend comfortably.

  Thus, since indoor air is circulating in the indoor unit of the air conditioner, dust in the indoor air is accumulated in the filter. Therefore, an air conditioner equipped with a filter cleaning device that automatically cleans the filter is known.

  For example, Patent Document 1 (Japanese Patent Application Laid-Open No. 2008-57846) includes a filter provided upstream of a blower fan and a heat exchanger, and in the air conditioner that exchanges heat and blows air that has passed through the filter. A brush that contacts and slides on the upstream surface, a moving means that moves a relative position between the brush and the filter, and dust that slides on the brush and adheres to the brush from the brush. There is disclosed an air conditioner that includes a removal brush that removes and attaches dust, and a dust return prevention brush that slides on the removal brush and retains dust attached to the removal brush.

JP 2008-57846 A

  In this way, the air conditioner is equipped with an automatic cleaning function, and dust collected on the filter can be removed. However, the filter may need to be cleaned due to an increase in the amount of dust or adhesion of oil or the like. In this case, it is necessary to remove the filter from the indoor unit for cleaning, and attach the cleaned filter to the indoor unit. At this time, if the filter is not properly attached, the filter cleaning device may not function normally. In addition, a predetermined air circulation path is disturbed, which may cause a decrease in reliability and performance of the air conditioner.

  Then, this invention makes it a subject to provide the air conditioner which can attach a filter suitably.

  In order to solve such a problem, the present invention includes a heat exchanger, a blower fan, and a filter disposed upstream of the heat exchanger and the blower fan, and the filter includes at least a casing. The air conditioner includes a front filter disposed in a vertical direction at a front portion, and the front filter is configured to be slidable in and removed from the left and right directions of the casing.

  ADVANTAGE OF THE INVENTION According to this invention, the air conditioner which can attach a filter suitably can be provided.

It is a general view which shows the whole structure of the air conditioner which concerns on this embodiment. It is a longitudinal cross-sectional view which shows the internal structure of the indoor unit of the air conditioner which concerns on this embodiment. It is an expansion | deployment perspective view which shows the internal structure of the indoor unit of the air conditioner which concerns on this embodiment. It is a perspective view which shows the structure of the filter cleaning apparatus with which the indoor unit of the air conditioner which concerns on this embodiment is provided. It is a top view of the front casing to which a top filter is attached. (A) is a front view of the front casing where a front filter is attached, (b) is a perspective view which shows the removal | desorption method of a front filter. (A) is the front view of a front filter, (b) is the elements on larger scale which looked at the side surface side edge part of the front filter from the lower side. (A) is a front view of a front casing to which a front filter is attached, (b) is a cross-sectional view taken along line AA of FIG. 8 (a) when the front filter is attached, and (c) to (e) are It is a figure explaining the flow at the time of attaching a front filter. (A) is the front view of the front filter which concerns on a modification, (b) is the elements on larger scale which looked at the side surface side edge part of the front filter which concerns on a modification from the lower side. (A)-(b) is a figure explaining the flow at the time of attaching the front filter which concerns on a modification.

  Hereinafter, modes for carrying out the present invention (hereinafter referred to as “embodiments”) will be described in detail with reference to the drawings as appropriate. In each figure, common portions are denoted by the same reference numerals, and redundant description is omitted.

≪Air conditioner≫
The air conditioner A according to the present embodiment will be described with reference to FIGS. 1 to 3. FIG. 1 is an overall view showing an overall configuration of an air conditioner A according to the present embodiment. FIG. 2 is a longitudinal sectional view showing the internal structure of the indoor unit 1 of the air conditioner A according to this embodiment. FIG. 3 is an exploded perspective view showing the internal structure of the indoor unit 1 of the air conditioner A according to the present embodiment.

  In FIG. 1, an air conditioner A includes an indoor unit 1 installed on the wall surface of the room (air-conditioned space), an outdoor unit 2 installed outside the room (outside the air-conditioned space), and a remote controller 3. The indoor unit 1 and the outdoor unit 2 are connected by a refrigerant pipe (not shown).

  The remote controller 3 is operated by a user (not shown) and can transmit an infrared signal to a signal receiving unit (not shown) of the indoor unit 1. The signal is a command such as an operation request, a change in set temperature, a timer, an operation mode change, or a stop request. The air conditioner A performs air conditioning operations such as a cooling mode, a heating mode, and a dehumidifying mode based on these signals.

  During the operation of the air conditioner A, the refrigerant is circulated between the indoor unit 1 and the outdoor unit 2 via a refrigerant pipe (not shown). The refrigerant flows through the heat transfer pipe 8a in the heat exchanger 8 of the indoor unit 1 shown in FIG. 2, and heats or cools the air taken in by the blower fan 9 in the indoor unit 1.

  When the blower fan 9 shown in FIG. 2 rotates, the indoor air is sucked from the air suction port 13 provided in the indoor unit 1, and the sucked air exchanges heat with the refrigerant flowing through the heat transfer pipe 8 a in the heat exchanger 8. Thus, the air conditioner A can air-condition the room by heating or cooling it and blowing out the heated or cooled air into the room from the air outlet 14. In addition, about the detail of the operation | movement at the time of the driving | running of the air conditioner A, the description is abbreviate | omitted.

  As shown in FIG. 3, the indoor unit 1 of the air conditioner A includes an electrical box 4, a front filter 5, a top filter 6, a filter cleaning device 7, a heat exchanger 8, a blower fan 9, and a back surface. A casing 10, an installation plate 11, and a front casing 12 are provided. The indoor unit 1 contains a drain pan (not shown), a dew tray (not shown), a camera (not shown), and the like, and the description thereof is omitted.

  In the heat exchanger 8, a plurality of fins 8b (see FIG. 2) through which a plurality of heat transfer tubes 8a (see FIG. 2) pass are stacked at a predetermined interval, and the indoor unit 1 is viewed in a side view and is inverted V-shaped. Molded into a mold. In addition, the heat exchanger tube 8a (refer FIG. 2) is connected with the outdoor unit 2 (refer FIG. 2) through refrigerant | coolant piping (not shown).

  The blower fan 9 is a cross-flow fan type fan formed in a cylindrical shape, and includes a cylindrical partition plate (not shown) that can be received at both ends and a plurality of locations in the central axis direction of the fan, and one partition plate. A plurality of wings (not shown) extending toward the other partition plate and arranged on the circumference. The blower fan 9 is configured to rotate around the central axis and perform a blowing operation.

  The casing (housing) of the indoor unit 1 is constituted by a front casing 12 and a rear casing 10, air suction ports 13 (see FIG. 2) are formed on the front and upper surfaces of the front casing 12, and the lower surface of the front casing 12 is formed. An air outlet 14 (see FIG. 2) is formed. The casing of the indoor unit 1 is formed by fitting the front casing 12 to the rear casing 10 from the front of the indoor unit 1 after installing each of the above devices (the heat exchanger 8 and the blower fan 9) on the rear casing 10. Is done. The installation plate 11 fixes the indoor unit 1 to the wall surface by fixing the back casing 10 to the wall surface.

  A front filter 5 and a top filter 6 are installed at the air suction port 13 (see FIG. 2) of the front casing 12 to prevent floating substances such as dust from entering the interior of the indoor unit 1. The front casing 12 is provided with a filter cleaning device 7 for cleaning the front filter 5 and the upper filter 6.

  The electrical box 4 houses electrical equipment such as an AC-DC converter (not shown) and a control board (not shown). As shown in FIG. The electrical box 4 is arranged so as to overlap a part of the front filter 5 when viewed from the front. Incidentally, the electrical box 4 is disposed between the front casing 12 and the front panel 15 (see FIG. 2). Thus, by arranging the electrical equipment box 4 on the front surface, the width of the heat exchanger 8 can be expanded as compared with an indoor unit in which the electrical equipment box 4 is arranged on the side surface side, so that the performance can be improved. . Moreover, the electrical equipment box 4 can be air-cooled.

<Filter cleaning device 7>
Next, an outline of the filter cleaning device 7 will be described with reference to FIG. FIG. 4 is a perspective view illustrating a configuration of the filter cleaning device 7 provided in the indoor unit 1 of the air conditioner A according to the present embodiment.

  As shown in FIG. 4, an air suction port 13 (a front-side air suction portion 13 a and a top-side air suction portion 13 b) is formed on the upstream side of the heat exchanger 8 of the indoor unit 1. More specifically, on the upstream side of the heat exchanger 8, a front side air suction portion 13a is formed substantially vertically, and an upper surface side air suction portion 13b is formed substantially horizontally. A planar front filter 5 and a top filter 6 are attached to these air suction ports 13 (the front side air suction portion 13a and the upper surface side air suction portion 13b), respectively, and form two surfaces orthogonal to each other. .

  The filter cleaning device 7 includes cleaning brushes 71a and 71b, a brush support frame 72, a moving motor 73, and a dust collecting container 74. The cleaning brushes 71a and 71b are supported by a brush support frame 72 having an L-shaped cross section. The moving motor 73 can move the brush support frame 72 in the left-right direction along the propulsion shaft 73a. As a result, the cleaning brushes 71a and 71b can sweep off dust adhering to the surfaces of the front filter 5 and the upper filter 6. Thereafter, the cleaning brushes 71a and 71b move to the dust collecting container 74 disposed at the left end of FIG. The dust collection container 74 is provided with removal brushes 74 a and 74 b that remove dust adhering to the cleaning brushes 71 a and 71 b and store the dust inside the dust collection container 74.

  In this way, the filter cleaning device 7 sweeps the dust adhering to the surfaces of the front filter 5 and the upper filter 6 using the cleaning brushes 71a and 71b (brush support frame 72) and removes the dust that has been swept away. 74a, 74b can be used to house the dust container 74. In addition, the dust accommodated in the inside of the dust collecting container 74 can be collect | recovered from the discharge port 74c.

<Filter>
Thus, the indoor unit 1 of the air conditioner A according to the present embodiment includes the filter cleaning device 7 and can remove dust attached to the surfaces of the front filter 5 and the upper filter 6. . However, when dust, oil, or the like that cannot be removed by the filter cleaning device 7 adheres to the surfaces of the front filter 5 and the upper filter 6, the user removes the front filter 5 and the upper filter 6 to remove the front filter 5 and the upper filter 6. It is necessary to perform cleaning. Hereinafter, a method for detaching the front filter 5 and the top filter 6 will be described.

<Method for Desorbing Top Filter 6>
First, a method for detaching the top filter 6 will be described with reference to FIG. FIG. 5 is a top view of the front casing 12 to which the top filter 6 is attached.

  The upper surface side air suction portion 13b (see FIG. 4) of the front casing 12 is covered with two upper surface filters 6A and 6B (6). Since the upper surface filter 6A and the upper surface filter 6B have the same structure, the method for detaching the upper surface filter 6A will be described, and the description of the method for detaching the upper surface filter 6B will be omitted.

  The upper surface filter 6A includes a grid-like filter frame 60, a lock 61 at the front of the filter frame 60, a handle 62 at the front of the filter frame 60, and a filter that is provided and supported on the entire surface of the filter frame 60. (Not shown).

  The upper filter 6A has a mechanism that slides in the horizontal front-rear direction (arrow direction in FIG. 5). That is, rails 126R and 126L are formed on the left and right of the upper surface of the front casing 12, and the right end 60R of the filter frame 60 and the rail 126R are engaged, and the left end 60L of the filter frame 60 and the rail are engaged. By engaging 126L, the upper surface filter 6A can be slid in the horizontal front-rear direction (arrow direction in FIG. 5).

  For removing the upper filter 6A, first, the lock 61 is slid rightward to release it, and then the upper filter 6A is slid forwardly while holding the handle 62 and removed.

  First, the left and right end portions 60R and 60L of the filter frame 60 are engaged with the rails 126R and 126L, and the upper surface filter 6A is inserted backward. Then, the lock 61 is slid rightward and fixed.

<Desorption method of front filter 5>
Next, a method for detaching the front filter 5 will be described with reference to FIGS. FIG. 6A is a front view of the front casing 12 to which the front filter 5 is attached, and FIG. 6B is a perspective view showing a method for attaching and detaching the front filter 5. FIG. 6A shows a state where the electrical box 4 is removed. FIG. 7A is a front view of the front filter 5, and FIG. 7B is a partially enlarged view of the side surface side end portion 50s of the front filter 5 as viewed from below. 8A is a front view of the front casing 12 to which the front filter 5 is attached, and FIG. 8B is a cross-sectional view taken along line AA of FIG. 8A when the front filter 5 is attached. 8 (c) to FIG. 8 (e) are diagrams for explaining the flow when the front filter 5 is attached.

  The front air suction portion 13a (see FIG. 4) of the front casing 12 is covered with two front filters 5A and 5B (5). Since the front filter 5A and the front filter 5B have the same structure except that the left and right directions are different, the method for detaching the front filter 5A will be described, and the description of the method for detaching the front filter 5B will be omitted. .

  As shown in FIGS. 3 and 8 (a), the indoor unit 1 of the air conditioner A according to the present embodiment has an electrical box on the front right side (right side) of the casing (rear casing 10, front casing 12). 4 is arranged, and a part of the front filter 5A is hidden by the electrical box 4.

  For this reason, as in the case of the upper surface filter 6, if the rails extending in the vertical direction are provided on the left and right sides and the front filter 5 is slid in the vertical direction, the rail on the right side of the front filter 5 A hidden by the electrical box 4 is provided. Since the front filter 5A cannot be seen from the front and the insertion of the front filter 5A into the rail cannot be confirmed, the mounting reliability of the front filter 5A is lacking.

  If the operation of the air conditioner A is started in a state where the filter is not mounted at a predetermined position, the filter cleaning device 7 may not function normally. In addition, a predetermined air circulation path is disturbed, which may cause a decrease in reliability and performance of the air conditioner A.

  On the other hand, the front filter 5A of the present embodiment has a mechanism that slides in the left-right direction from the center of the front casing 12.

  Specifically, as shown in FIGS. 7A and 7B, the front filter 5 </ b> A is provided on the side of the lattice-shaped filter frame 50 and the center side end 50 c of the upper side of the filter frame 50. The lock receiving portion 51 formed, the lock receiving portion 52 formed on the side of the center side end portion 50c of the lower side of the filter frame 50, the guide rib 53, the guide rib 54, and the filter frame 50 are provided on the entire surface. And a supported filter (not shown).

  The guide rib 53 is formed in a columnar shape protruding upward on the side surface side end portion 50 s on the upper side of the filter frame 50. Further, the guide rib 54 is formed in a columnar shape (see FIG. 7B) projecting downward on the side surface side end portion 50s of the lower side of the filter frame 50.

  Further, as shown in FIG. 6A, the front casing 12 is provided with locks 121 and 122 on the upper and lower sides on the center side of the front surface portion, and rails 123 and 124 on the upper and lower sides on the side surface side of the front surface portion. It has been. In addition, since the rail 123 and the rail 124 are the same structures, the structure of the rail 124 is demonstrated and description of the rail 123 is abbreviate | omitted.

  As shown in FIG. 8B, the rail 124 is a groove portion extending in the left-right direction, and has an opening (insertion opening) 124a on the left side, an inclined portion 124b, and a terminal end portion 124c on the right side. . The opening part 124a is provided in the center side rather than the area | region hidden in the electrical equipment box 4, when it sees from the front, and is formed in the position which can be visually observed from the front. An inclined portion 124b is provided between the opening 124a and the rail 124 extending in the left-right direction.

  The front filter 5A is attached in such a manner that the front filter 5A has a central end 50c (see FIG. 7), and guide ribs 53 and 54 of the front filter 5A extend from the opening (124a) along the inclined portion (124b) ( 8 (c)), inserted into the rails 123 and 124 of the front casing 12 (see FIG. 8 (d)), and the guide ribs 53 and 54 are moved to the right until they abut against the end portions (124c) of the rails 123 and 124. It is made to slide (refer FIG.6 (b) and FIG.8 (b)). Then, with the guide ribs 53 and 54 as rotation axes, the center side end portion 50c of the front filter 5A is swung to the front casing 12 side, and the locks 121 and 122 are moved to the center with the front filter 5A being housed in the front casing 12. The lock receiving portions 51 and 52 of the front filter 5A are engaged and fixed so as to be sandwiched between the locks 121 and 122 and the front casing 12.

  The front filter 5A is removed by sliding the locks 121 and 122 to the opposite side of the center, holding the center side end 50c (see FIG. 7) of the front filter 5A, and pulling it out in the center direction (left direction). Take out.

<Effect>
Hereinafter, the effect of the air conditioner A which concerns on this embodiment is demonstrated.

  As shown in FIGS. 8A and 8B, the guide ribs 53 and 54 of the front filter 5 are inserted into the rails 123 and 124 by using a slide mechanism in the left-right direction for attaching and detaching the front filter 5. Can be visually confirmed, and erroneous insertion can be prevented.

  When the front filter 5 is configured to be slid in the vertical direction to be detached, the indoor unit 1 is secured by securing a work space (distance from the ceiling) equal to the vertical length of the front filter 5 above the indoor unit 1. It is necessary to install. On the other hand, the air conditioner A according to the present embodiment can install the indoor unit 1 without opening a large space upward by using a slide mechanism in the left-right direction for removing the front filter 5. .

  The front filter 5 is divided into a right front filter 5A and a left front filter 5B. The right front filter 5A is removed in the center direction (left side), and the left front filter 5B is in the center direction (right side). It is designed to be removed. Thereby, the side surface of the indoor unit 1 can be installed close to the wall.

  Further, since the inclined portion 124b is formed in the opening 124a of the rails 123 and 124, the guide ribs 53 and 54 of the front filter 5 are slid from the vicinity of the center while sliding along the inclined portion (124b). It can be easily inserted into 124 and erroneous insertion can be prevented.

<Modification of Front Filter 5>
Next, modified examples of the front filter 5 will be described with reference to FIGS. FIG. 9A is a front view of a front filter 5C according to a modification, and FIG. 9B is a partially enlarged view of the side-side end portion 50s of the front filter 5C according to the modification as viewed from below. FIG. 10A to FIG. 10B are diagrams for explaining the flow when the front filter 5C according to the modification is attached.

  As shown in FIG. 9A, lock receiving portions 51 a and 52 b may be provided on the side opposite to the lock receiving portions 51 and 52. With this configuration, the front filter 5C (see front filter 5A in FIG. 8) mounted on the right side of the front casing 12 is engaged with the lock receiving portions 51 and 52 by sliding the locks 121 and 122 to the right. The front filter 5C (see front filter 5B in FIG. 8) mounted on the left side of the front casing 12 is engaged with the lock receiving portions 51a and 52b by sliding the lock to the right. Can be fixed together. That is, the locking direction of the front filter 5 and the top filter 6 can be unified in the right direction, and user convenience is improved.

  Further, as shown in FIG. 9A, extending ribs 55 and 56 extending from the guide ribs 53 and 54 are provided. In addition, since the extension rib 55 and the extension rib 56 are the same structures, the structure of the extension rib 56 is demonstrated and description of the extension rib 55 is abbreviate | omitted.

  As shown in FIG. 9B, the extending rib 56 has a rear parallel portion 56a, an inclined portion 56b, and a front parallel portion 56c.

  Here, when the front filter 5 </ b> C is mounted, the front filter 5 </ b> C is inserted into the rail 124 from the guide rib 54. Here, as shown in FIG. 10A, the rear parallel portion 56a which is the extending rib 56 on the guide rib 54 side is formed on the rear side (lower side in the paper surface of FIG. 10A), and the front filter Even if the 5C is inserted at an angle, it can be prevented from coming into contact with the front side wall surface of the rail 124. Further, the front parallel portion 56c, which is the extending rib 56 on the guide rib 54 side, is formed on the front side (upper side in the paper surface of FIG. 10A) so that it does not come into contact with the front casing 12. It has become.

  Further, by providing the extending rib 56 as described above, when the guide rib 54 is inserted to the end portion 124c of the rail 124, the rear parallel portion 56a and the rear side wall surface of the rail 124 are arranged as shown in FIG. Since the front parallel portion 56c is in contact with the front side wall surface of the rail 124, rattling after insertion can be suppressed.

≪Modification≫
The air conditioner A according to this embodiment is not limited to the configuration of the above embodiment, and various modifications can be made without departing from the spirit of the invention.

  Although the air conditioner A according to the present embodiment has been described by taking an example in which the electrical box 4 is disposed in the front part of the casing, the electrical box 4 may not be installed in the front part of the casing.

  Moreover, although the air conditioner A which concerns on this embodiment demonstrated as what was equipped with the filter cleaning apparatus 7, it is not restricted to this, The filter cleaning apparatus 7 does not need to be provided.

  In order to prevent erroneous insertion, when the guide ribs 53 and 54 are slid without being inserted into the rails 123 and 124, the guide ribs 53 and 54 are locked on the center side with respect to the end portions (124c) of the rails 123 and 124. A locking portion (not shown) may be formed. As a result, even if the guide ribs 53 and 54 are swung from the locked position as the rotation shaft, the lock receiving portions 51 and 52 of the front filter 5 cannot be fixed by the locks 121 and 122. Can know.

  In addition, since the top filter 6 is detached in the front-rear direction, the front filter 5 is detached in the left-right direction, it is desirable to instruct the user of the insertion direction. For example, the filter frame 50 may be molded by marking an arrow indicating the insertion direction. Further, the lattice shape may be formed into an arrow. In this way, by forming an instruction symbol such as an arrow without using an additional member such as an instruction nameplate, an increase in the number of parts can be prevented and the cost can be reduced.

A Air conditioner 1 Indoor unit 2 Outdoor unit 3 Remote control 4 Electrical box 5, 5A, 5B, 5C Front filter 6, 6A, 6B Top filter 7 Filter cleaning device 8 Heat exchanger 9 Blower fan 10 Rear casing (casing, housing) )
11 Mounting plate 12 Front casing (casing, housing)
13 Air Suction Port 13a Front Side Air Suction Portion 13b Top Surface Side Air Suction Portion 14 Air Blowout Port 15 Front Panel 50 Filter Frame 50s Side Side End 50c Center Side End 51, 52 Lock Receiving Portion 53, 54 Guide Ribs 55, 56 Extension rib 121, 122 Lock 123, 124 Rail 124a Opening (insertion slot)
124b Inclined portion 124c End portion 126R, 126L Rail

Claims (5)

A heat exchanger,
A blower fan,
A filter disposed upstream of the heat exchanger and the blower fan, and
The filter has a front filter disposed in a vertical direction at least at the front of the housing;
The air conditioner is characterized in that the front filter is configured to be detachable by sliding in the left-right direction of the casing. The air conditioner according to claim 1, further comprising an electrical box disposed on the front side of the housing so as to cover a part of the side of the front filter when viewed from the front. The housing further includes a rail capable of sliding the front filter in a left-right direction,
The air conditioner according to claim 2, wherein the insertion port of the rail is formed closer to the center of the housing than a region covered with the electrical box when viewed from the front. The air conditioner according to claim 3, wherein an inclined portion is formed at the insertion port of the rail. The front filter is divided into a right filter and a left filter in the left-right direction of the housing,
The air conditioner according to any one of claims 1 to 4, wherein the right filter and the left filter are configured to be removable by sliding in a central direction of the casing.

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