JP2009103329A - Indoor unit of air conditioner - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an indoor unit of an air conditioner capable of increasing the amount of air passing through a suction opening and improving the heat exchanging performance of a heat exchanger in an indoor machine comprising a heat exchanger where a heat exchanging capacity of a front-side heat exchanger is larger than that of a top-side heat exchanger, and the air passing amount of a front-face suction opening is smaller than that of a top face suction opening. <P>SOLUTION: An indoor unit main body 1 receives the heat exchanger 8 composed of the front-side heat exchanger 8A and the top-side heat exchanger 8B, and a blower 10 inside thereof, the front-face suction opening 4 and the top-face suction opening 5 are formed on the front face and the top face portion of an indoor unit body in opposition to the heat exchanger, a fixed frame 16 is disposed between each suction opening and the heat exchanger, and supports a front-face air filter 17 and a top-face air filter 20 in opposition to the front-face suction opening and the top-face suction opening, an air filter cleaning mechanism S is disposed along a clearance between the front-face air filter and the top-face air filter for reciprocating the air filters to remove dust attached thereto, and further a flow-dividing guide opening 25 is formed on the fixed frame to divide and guide a part of the indoor air sucked from the top-face suction opening to the front-face suction opening side of the front-side heat exchanger. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to an indoor unit of an air conditioner having an improved indoor air suction guide structure.

  In an indoor unit of an air conditioner, a heat exchanger and a blower are housed in an indoor unit main body that is a casing, and the indoor air sucked from a suction port that opens to the indoor unit main body with the blowing action of the blower is heated. Conduct heat through the exchanger. The indoor air after the heat exchange is blown out from a blow-out opening that opens in the indoor unit main body, and performs indoor air conditioning.

  The heat exchanger is of a fin tube type in which a large number of fins are juxtaposed with a narrow gap and these fins are penetrated by a heat exchange pipe as a refrigerant tube. Initially, it was I-shaped in a side view and was a so-called flat plate, but recently it consists of a front heat exchanger part and an upper heat exchanger part, and is formed in a substantially inverted V shape in a side view. What is being done occupies the mainstream.

  Further, fine dust, dust, pollen, fungi, etc. floating in the room (hereinafter collectively referred to as “dust”) are sucked into the indoor unit body together with the indoor air and adhere to the heat exchanger. If left unattended for a long time, it accumulates and causes mold and odor, which leads to a decrease in heat exchange efficiency. Therefore, an air filter for capturing dust is attached to the suction port.

In this air filter as well, dust attached due to long-term use hinders the flow of room air, so the dust must be removed from the air filter as appropriate. However, many indoor units are wall-mounted types that can be mounted at high places on the wall, making maintenance work difficult. A solution to this problem is an indoor unit of an air conditioner described in, for example, [Patent Document 1].
JP 2007-155241 A

  [Patent Document 1] supports a front air filter and an upper air filter on a fixed frame, and includes an air filter cleaning mechanism between these air filters. The air filter cleaning mechanism alternately reciprocates each air filter, removes dust while passing through the cleaning mechanism, and discharges it to the outdoors. The air filter cleaning operation is automated and does not bother the user.

  However, there is also an effect due to the provision of an air filter cleaning mechanism. The heat exchanger having a substantially inverted V shape has a structure in which the front heat exchanger section has a larger heat exchange area and a larger heat exchange capacity than the upper heat exchanger section. On the other hand, in the indoor unit body, a front suction port is opened facing the front air filter, and an upper suction port is opened facing the top air filter.

  The front suction port is exposed to the room, and the aesthetic appearance will be lost if it is left as it is. During the air conditioning operation, the movable panel is protruded from the front panel, and indoor air is sucked and guided through the gap between the movable panel and the front panel. On the other hand, the upper surface suction port cannot be seen by the resident because the indoor unit main body is attached to the height of the wall surface.

Therefore, the upper surface suction port is opened over the entire surface. For this reason, it is easy to make the amount of air passing through the upper surface suction port larger than the amount of air passing through the front surface suction port, but on the front side, the amount of suction is determined by the opening area formed around the movable panel. .
Conventionally, the movable panel is projected largely from the front panel to increase the area of the suction port on the front side and secure the amount of air sucked from the front side. Therefore, the movable mechanism for supporting the movable panel has been enlarged.

  The present invention has been made on the basis of the above circumstances, and its object is a heat exchanger formed in a substantially inverted V shape, in which the heat exchange capacity of the front heat exchanger part is that of the upper heat exchanger part. While it is larger than the heat exchange capacity, the amount of heat exchange per unit area can be increased by increasing the amount of air flowing to the front heat exchanger without increasing the front feed amount of the movable panel at the front suction port. It is intended to provide an indoor unit of an air conditioner that can improve the heat exchange performance as a heat exchanger.

  In order to satisfy the above object, the indoor unit of the air conditioner according to the present invention has an indoor unit body that includes a front heat exchanger part and an upper heat exchanger part and is formed in an inverted V shape in a side view. The front air inlet and the upper air inlet are opened on the front and upper surfaces of the indoor unit body so as to face the heat exchanger. Each sucks and guides indoor air as the blower operates, and the fixed frame is interposed between the front suction port, top suction port, and heat exchanger of the indoor unit body, and faces the front suction port and top suction port, respectively. The front air filter and the upper air filter are supported, and the air filter cleaning mechanism is provided between the front air filter and the upper air filter supported by the fixed frame, and each air filter is reciprocated to move each air filter. Adhere to And dust was removed and shunting guide port shunt guides a part of the indoor air sucked from the upper surface intake port provided in the fixed frame to the front surface intake port side of the front heat exchanger section in the heat exchanger.

  According to the present invention, it is possible to increase the amount of air flowing to the front heat exchanger section to increase the amount of heat exchange per unit area, and to obtain an effect of improving the heat exchange performance as a heat exchanger. .

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
FIG. 1 is a schematic longitudinal sectional view relating to an indoor unit of an air conditioner, and FIG. 2 is a perspective view in a state where a movable panel of the indoor unit of the same air conditioner is opened. (Note that parts not marked in the description are not shown. The same applies hereinafter.)
The indoor unit main body 1 is composed of a front panel 2 and a rear plate casing 3 that constitute a front casing, and is horizontally long in the width direction with respect to the vertical direction. A front suction port 4 is opened at a part of the front side of the indoor unit body 1, and a movable panel 2 </ b> A supported by an opening / closing drive mechanism is fitted into the front panel 2 facing the front suction port 4.

  When the operation is stopped as shown by a solid line in FIG. 1, the movable panel 2 </ b> A is joined to the surface of the front panel 2 to become the same surface and closes the front suction port 4. During air-conditioning operation, it is indicated by a two-dot chain line in FIG. 1, and the movable panel 2A protrudes toward the front side as shown in FIG. 2, so that the front suction port 4 opens to the room through a gap with the front panel 2. Be controlled.

  An upper surface suction port 5 is provided in the upper part of the indoor unit body 1. A frame-like crosspiece is fitted into the upper surface suction port 5 and is partitioned into a plurality of spaces. In other words, the upper surface suction port 5 is always a suction part that is opened entirely. On the other hand, in the front suction port 4 described above, the gap between the projecting movable panel 2A and the front panel 2 is a substantial suction portion.

On the other hand, the upper surface suction port 5 cannot be seen by the resident because the indoor unit body 1 is attached to a wall surface high place. Therefore, in general, the movable panel 2 </ b> A is always opened without being attached like the front suction port 4.
However, during the air conditioning operation, due to the above-described configuration, the upper surface is entirely open and the entire surface forms a suction portion rather than the amount of air flowing through the front suction port 4 through the gap between the movable panel 2A and the front panel 2. The amount of air flowing through the suction port 5 can be easily increased.

  A blow-out port 6 is opened at the lower front portion of the indoor unit body 1, and two blow-out louvers 7a and 7b are provided in parallel at the blow-out port 6. The blowout louvers 7a and 7b can open and close the blowout opening 6 according to their respective rotation postures and set the blowout direction of the heat exchange air according to operating conditions.

  In the indoor unit main body 1, a heat exchanger 8 formed in a substantially inverted V shape by the front heat exchanger portion 8A and the rear heat exchanger portion 8B is disposed. The front heat exchanger section 8A is formed in a substantially parallel curved shape with a gap with the front panel 2, and faces the front suction port 4 and the upper suction port 5. The rear heat exchanger portion 8B is formed in a straight shape, and is opposed to the upper surface suction port 5 with an inclination.

  An indoor blower 10 is disposed between the front heat exchanger portion 8A and the rear heat exchanger portion 8B constituting the heat exchanger 8. The indoor blower 10 includes a fan motor disposed in a space on one side end of the indoor unit main body 1 and a cross-flow fan in which one support shaft is connected to a rotation shaft of the fan motor.

  The lower end portion of the front heat exchanger portion 8A is placed on the front drain pan 12a, and the lower end portion of the rear heat exchanger portion 8B is placed on the rear drain pan 12b. The front and rear drain pans 12a and 12b receive drain water dropped from the respective heat exchanger portions 8A and 8B, and can drain the water to the outside through a drain hose (not shown).

  The front and rear drain pans 12a and 12b have partial outer wall surfaces that are provided close to the indoor blower 10 and constitute a nose for the crossflow fan of the indoor blower 10. The side wall portions of the front and rear drain pans 12a and 12b and the respective sides of the outlet 6 are connected by a partition member 14, and this space serves as an outlet air passage 15 that communicates the nose and the outlet 9.

  On the other hand, a fixed frame 16 is interposed between the front panel 2 and the heat exchanger 8, and the fixed frame 16 is attached to the front panel 2 via a fixture. The fixed frame 16 is formed of a peripheral frame body and an auxiliary frame body, and an opening area that opens to face the front suction port and the upper suction port is secured.

  A front air filter 17 and an air purifier unit 18 as a secondary air filter are attached to the front side of the fixed frame 16 and a secondary air filter. That is, the front air filter 17 and the air purifier unit 18 are interposed between the front suction port 4 and the front heat exchanger portion 8 </ b> A constituting the heat exchanger 8.

Further, an upper air filter 20 is attached to the upper surface portion of the fixed frame 16. The upper surface air filter 20 is interposed between the upper surface suction port 5, a part of the front heat exchanger portion 8A, and the rear heat exchanger portion 8B.
The air purifier unit 18 includes an electric dust collector and a dust collector power supply unit arranged side by side. Each electrostatic precipitator includes a charge side electrode that applies a charge to the dust in the flowing air, and a dust collection side electrode that captures the charged dust. Each electrode surface is coated with a deodorizing agent that adsorbs odorous components contained in the air, and has both a dust collecting function and a deodorizing function as an electric dust collector.

  On the other hand, the air filter cleaning mechanism S is attached between the upper end of the front air filter 17 and the front end of the upper air filter 20. This air filter cleaning mechanism S is formed in the width direction length same as the width direction length of the front air filter 17 and the upper surface air filter 20, and has a certain thickness dimension in the front-back direction.

  The air filter cleaning mechanism S is disposed at a portion between the front suction port 4 and the upper suction port 5 and is in a corner where the front surface portion and the upper surface portion of the front panel 2 intersect. Therefore, the air filter cleaning mechanism S is disposed in a dead space that is inevitably formed between the front panel 2 and the heat exchanger 8.

Further, the fixed frame 16 and the air filter cleaning mechanism S will be described.
FIG. 3 is a perspective view of the fixed frame 16, and FIG. 4 is a perspective view of the air filter cleaning mechanism S attached to the fixed frame 16 and a part of the periphery thereof. In FIG. 3, the front air filter 17, the top air filter 20, and the air filter cleaning mechanism S are schematically shown, but the air cleaner unit 18 is omitted.

  A front air filter 17 is supported on the fixed frame 16 so as to be movable upward, and an upper air filter 20 can be accommodated on the front side of the front air filter 17. An upper surface air filter 20 is supported in the upper surface side opening of the fixed frame 16 so as to be movable forward, and a front air filter 17 can be stored on the upper surface side of the upper surface air filter 20.

  If the front panel 2 of the indoor unit body 1 is opened, the front and upper air filters 17 and 20 can be easily detached from the fixed frame 16. Further, the pair of electrostatic precipitators constituting the air purifier unit 18 can be easily detached from the fixed frame 16. The air filter cleaning mechanism S is configured to be detachable from the fixed frame 16 except for a part thereof.

  In particular, as shown in FIG. 3, a drive unit 21 of the air filter cleaning mechanism S is attached to a portion of the fixed frame 16 facing the air filter cleaning mechanism S on one side. An exhaust unit is attached to the side of the fixed frame 16 opposite to the drive unit 21. The exhaust unit has a function of sucking the dust collected by the air filter cleaning mechanism S and automatically discharging it to the outdoors.

  Furthermore, the fixed frame 16 is provided with a partition portion 23 that is obliquely bent from a lower end portion of a portion that supports the air filter cleaning mechanism S between both side portions except for both side portions. The partition 23 forms a partition between a portion of the fixed frame 16 that faces the front suction port 4 and a portion that faces the upper surface suction port 5.

  The partition portion 23 in the fixed frame 16 is provided with a diversion guide port 25 having a plurality of rectangular holes extending in the vertical direction and extending in the width direction of the indoor unit body 1. The diversion guide ports 25 are integrally formed with louvers 26 each formed by cutting and raising. Each louver 26 protrudes from the partition 23 to the front suction port 4 side.

  That is, by providing the flow dividing guide port 25 in the partition part 23, the upper surface suction port 5 side and the front surface suction port 4 side are connected. Since the louver 26 is provided at the diversion guide port 25 so as to protrude to the front suction port 4 side, air flows smoothly from the upper suction port 5 side to the front suction port 4 side, but from the front suction port 4 side. Air flow is blocked to the upper surface inlet 5 side.

  Further, when high-temperature and high-humidity air passes through the upper surface inlet 5 of the front panel 2, dew that is moisture contained in the air may condense on the lattice portion, and the dew may be mixed in the intake air. When dew is mixed in the air guided from the upper surface suction port 5 side to the front surface suction port 4 side, the dew contacts the louver 26 and is blocked from passing, and only air smoothly flows to the front surface suction port 4 side.

  On the other hand, the air filter cleaning mechanism S includes a rotating brush 30 that is mechanically connected to a drive unit, a dust box 32 that houses the rotating brush 30 and includes a dust receiving passage 31, and an opening provided in the dust box 32. 33 is composed of a seal member 34 that can be freely opened and closed.

  The rotary brush 30 is rotationally driven by the drive unit 21 and is provided so as to come into contact with the front air filter 17 or the upper air filter 20 where the hair tip advances. The dust receiving passage 31 is formed along the rotary brush 30 and is in a position to receive the dust scraped off by the rotary brush 30, and one end thereof communicates with the exhaust unit described above.

  An opening 33 is provided on the lower surface of the dust box, from which a part of the rotating brush 30 is exposed. The seal member 34 is formed of a flexible elastic material such as synthetic rubber, and is supported by a lift mechanism. Normally, the seal member 34 is located at a position away from the portion of the rotating brush 30 exposed from the opening 33, and the opening 33 can be closed by operating the lift mechanism.

  A scraping projection 35 is provided between the dust receiving passage 31 and the rotating brush 30 in the dust box 32. The scraping protrusion 35 is always inserted into the bristles of the rotary brush 30 and is in a position where the bristles are in sliding contact with the rotation of the rotary brush 30 so that dust adhering to the rotary brush 30 can be efficiently removed. Can be scraped off.

Next, the operation of the indoor unit of the air conditioner configured as described above will be described.
When the user presses the operation button of the remote control (remote control panel), the movable panel 2A opens the front suction port 4, the indoor blower 10 is driven, and the air purifier unit 18 acts. At the same time, the compressor is driven in the outdoor unit communicating with the indoor unit, and the refrigeration cycle operation is started.

  The room air is guided into the indoor unit body 1 from the front suction port 4 and the upper surface suction port 5, and further passes through the front air filter 17 and the upper surface air filter 20. At this time, dust contained in the room air is captured by the front air filter 17 and the upper air filter 20. The room air from which the dust has been removed by the front air filter 17 passes through the air purifier unit 18, and finer dust is electrically collected and deodorized.

  The cleaned indoor air flows through the heat exchanger 8 and performs a heat exchange action with the refrigerant led to the room air. Thereafter, the heat exchange air is guided along the blowout air passage 15 and guided from the blowout opening 6 to the blowout louvers 7a and 7b and blown into the room. Therefore, an efficient air conditioning operation for the room is continued.

  Since the partition portion 23 is provided on the fixed frame 16, the partition portion 23 directly passes through the front air inlet 17 through the front air filter 17 and the room air through the front air inlet 17 and the upper surface air inlet 20 through the upper air filter 20. The indoor air thus led is separated and distributed to the heat exchanger 8. However, here, the diversion guide port 25 is provided in the partition part 23.

  As described above, the upper surface suction port 5 is opened entirely, whereas the front suction port 4 has a substantial opening between the front panel 2 and the movable panel 2A. Therefore, in the opening state of the movable panel 2 </ b> A that is generally performed, the amount of air guided from the upper surface inlet 5 into the indoor unit body 1 is greater than the amount of air guided from the front inlet 4 into the indoor unit body 1. Also configured to be larger.

  On the other hand, the heat exchanger 8 is formed in an inverted V shape in a side view by the front heat exchanger portion 8A and the upper heat exchanger portion 8B, and the heat exchange capacity is higher than that of the upper heat exchanger portion 8B. The exchanger unit 8A is configured to be larger. Since the heat exchange amount of the heat exchanger 8 is proportional to the amount of ventilation, in this state, the amount of air sucked only from the gap with the movable panel 2A per unit area of the front heat exchanger section 8A having a small amount of ventilation. The heat exchange amount is smaller than the heat exchange amount of the upper heat exchanger section 8B having a large ventilation amount.

  On the other hand, since the diversion guide port 25 is provided in the partition portion 23, part of the indoor air that has passed through the upper surface air filter 20 from the upper surface intake port 5 is diverted to the diversion guide port 25. Then, the air is guided from the diversion guide port 25 to the suction side of the front heat exchanger section 8 </ b> A, and merges with the room air guided from the front suction port 4 to the front air filter 17.

  As a result, the amount of air guided to the upper heat exchanger section 8B decreases, while the amount of air guided to the front heat exchanger section 8A increases. Although the amount of air sent to the upper heat exchanger section 8B decreases, the amount of air required by the upper heat exchanger section 8B can be sufficiently secured, so that the amount of heat exchange in the upper heat exchanger section 8B is not reduced. The heat exchange amount in the front heat exchanger section 8A can be improved, and the heat exchange performance of the heat exchanger 8 as a whole can be improved.

  On the other hand, the air filter cleaning mechanism is selected after the user selects the “air filter cleaning mode” of the remote control or after the air-conditioning operation is finished every predetermined period, or at a preset time or a predetermined time zone. S is activated. A drive signal is sent to the drive unit 21 to drive the front air filter 17 upward, and the rotary brush 30 is driven to rotate.

  The front air filter 17 passes through the air filter cleaning mechanism S, and at this time, the rotating brush 30 slidably contacts the front air filter 17 and scrapes dust adhering thereto. The front air filter 17 that has once moved to the uppermost end of the fixed frame 16 descends and passes through the air filter cleaning mechanism S. At this time, the adhering dust is scraped off.

  After the front air filter 17 reciprocates and all the dust adhering while passing through the air filter cleaning mechanism S is removed, similarly, the upper air filter 20 reciprocates while passing through the air filter cleaning mechanism S. All attached dust is removed. The removed dust is guided to the exhaust unit via the dust receiving passage 31 and is discharged to the outdoors.

  In the present invention, in the heat exchanger 8 in which the heat exchange capacity of the front heat exchanger section 8A is larger than the heat exchange capacity of the upper heat exchanger section 8B, the front side through the front air filter 17 from the front suction port 4 In addition to the amount of air guided to the heat exchanger section 8A, a part of the amount of air guided from the upper surface inlet 5 to the upper surface heat exchanger section 8B via the upper surface air filter 20 is guided to the front heat exchanger section 8A. Was configured.

  That is, a diversion guide port 25 is provided in the fixed frame 16, and a part of the indoor air flowing through the upper surface air filter 20 </ b> B from the upper surface intake port 5 is diverted and guided to the intake side of the front heat exchanger section 8 </ b> A. As a result, the amount of air necessary for heat exchange of the upper surface heat exchanger 8B is secured, and the amount of heat exchange in the front heat exchanger 8A is increased, thereby improving the heat exchange performance of the heat exchanger 8 as a whole. Can be achieved.

  Furthermore, in this invention, the air cleaner unit 18 was arrange | positioned in the windward side of 8 A of front side heat exchanger parts which comprise the heat exchanger 8. FIG. That is, the air purifier unit 18 is for electrically capturing fine dust that has passed through the front air filter 17 and collecting the dust, but the dust collection amount is proportional to the ventilation rate.

  Therefore, the indoor air that has passed through the upper surface air filter 20 from the upper surface suction port 5 is guided to the air purifier unit 18 from the diversion guide port 25. As a result, the indoor air that has passed through the front suction port 4 and the front air filter 17 and the indoor air that is guided from the diversion guide port 25 are joined to the air purifier unit 18 and led to an increase in the amount of ventilation. Improves dust collection efficiency.

  Since the louver 26 is provided along the diversion guide port 25 that opens in the fixed frame 16, even if dew is included in the room air led from the upper surface suction port 5 to the upper surface air filter 20, it passes through the diversion guide port 25. When hitting, it collides with the louver 26 and falls. That is, the louver 26 circulates only the indoor air to the suction side of the front heat exchanger section 8A and prevents the dew from flowing, so that the dew does not scatter and keeps comfort.

  Note that the present invention is not limited to the above-described embodiment as it is, and can be embodied by modifying the constituent elements without departing from the scope of the invention in the implementation stage. Various inventions can be formed by appropriately combining a plurality of constituent elements disclosed in the above-described embodiments.

The schematic longitudinal cross-sectional view of the indoor unit which comprises the air conditioner based on Embodiment of this invention. The perspective view in the state which opened the movable panel of the indoor unit of the air conditioner based on the embodiment. The perspective view of the fixed frame based on the embodiment. Sectional drawing of the fixed frame based on the embodiment.

Explanation of symbols

  8A ... front heat exchanger part, 8B ... upper heat exchanger part, 8 ... heat exchanger, 1 ... indoor unit main body, 4 ... front air inlet, 5 ... upper air inlet, 17 ... front air filter, 20 ... upper air Filter, 16 ... fixed frame, S ... air filter cleaning mechanism, 25 ... shunt guide port, 18 ... air purifier unit, 26 ... louver.

Claims (3)

Inside, a heat exchanger composed of a front heat exchanger part and an upper heat exchanger part and formed in an inverted V shape in a side view, and a front heat exchanger part and an upper heat exchanger part of the heat exchanger, An indoor unit main body that houses a blower disposed between,
A front suction port and an upper suction port that are opened on the front surface and the upper surface of the indoor unit body so as to face the heat exchanger, and each sucks and guides indoor air in accordance with the operation of the blower.
A fixed frame that is interposed between the front suction port and the upper suction port and the heat exchanger, and faces the front suction port and the upper suction port, and supports the front air filter and the upper air filter,
An air filter cleaning mechanism that is provided between the front air filter and the upper air filter supported by the fixed frame, and reciprocates each air filter to remove dust adhering to each air filter;
A diversion guide port provided on the fixed frame and for diverting and guiding a part of the indoor air sucked from the upper surface suction port to the front suction port side of the front heat exchanger part in the heat exchanger. Air conditioner indoor unit.   The air purifier unit for purifying indoor air introduced through the front suction port and the diversion guide port is disposed on the windward side of the front heat exchanger part constituting the heat exchanger. The indoor unit of the air conditioner according to 1.   The indoor unit of an air conditioner according to claim 1, wherein a louver that prevents passage of dew contained in room air flowing through the branch guide port is provided at the branch guide port.

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