JP2008051430A - Indoor unit for air conditioner - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an indoor unit for an air conditioner provided with a fan cleaning device automatically carrying out removal of dust of an indoor cross flow fan. <P>SOLUTION: The indoor unit for the air conditioner is provided with the fan cleaning device cleaning the cross flow fan arranged in a draft duct communicating an air suction opening and a blow-out opening of an indoor unit body. The fan cleaning device is provided with a fan dust remover moving in a rotation axis direction along a blade of the cross flow fan and removing dust attached to the blade, a moving device moving the fan dust remover, an exhaust device provided in one end side of the indoor unit body and communicated with a one side side face space of the cross flow fan, and an exhaust duct communicated with the exhaust device. Dust removed by the fan dust remover is exhausted to the exterior via the exhaust device and the exhaust duct. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to an indoor unit of an air conditioner, and more particularly to an indoor unit of an air conditioner provided with a fan cleaning device for an indoor crossflow fan.

  When the indoor unit of the air conditioner is used for a long time, dust accumulates in the air filter and the indoor cross-flow fan arranged in the air passage connecting the air suction port and the air outlet of the indoor unit body.

  For this reason, an air conditioner that is provided with an air filter, removes dust from the conditioned air, and cleans the air filter using an air filter cleaning device when dust accumulates in the air filter is disclosed in Patent Document 1. Is disclosed.

  Moreover, fine dust and mold spores that are not captured by the air filter and are contained in the air that has passed through the air filter are likely to adhere to the cross-flow fan constituting the blower. Long-term use may cause dust and mold to adhere to and accumulate on the surface of the cross-flow fan, resulting in a reduction in air conditioning capability and an increase in power consumption.

Therefore, in recent years, drying operation to remove moisture in the main body that causes mold generation, sterilization operation to fill the inside with ozone to kill mold spores, and dirty air and moisture present in the machine to the outside Patent Document 2 discloses an air conditioner in which an in-machine clean operation for performing an exhaust operation for discharging or the like is performed after the end of the air conditioning operation.
JP 2002-340395 A JP 2002-349891 A

  Employing the techniques of Patent Document 1 and Patent Document 2 described above has an advantage of eliminating the need for in-machine cleaning over a long period of time. By the way, by performing the air filter cleaning operation with the air filter cleaning device according to Patent Document 1, the air filter can be automatically cleaned. In addition, the removal of mold spores adhering to the fan is sterilized by filling the entire inside of the main body with ozone, but in reality, the outflow of ozone to the outside of the machine is suppressed, and the ozone sterilization effect inside the machine is achieved. In order to increase this, the ozone generator is operated with the cross-flow fan in a stopped state so that ozone is filled inside the main body. For this reason, it took time to spread ozone to every corner inside the main body.

  Further, such an in-machine clean operation for performing ozone sterilization is set to be automatically executed after stopping the normal air conditioning operation. However, since the air conditioner continues to operate for a predetermined long time (around one hour) after the stop button is stopped, this in-machine clean operation continues without stopping the air conditioning operation among users. It may be misunderstood, and it may be forcibly stopped during the clean operation.

  If the air conditioner is used for a long period of time when the in-machine clean operation is not sufficiently performed, the sterilization in the main body becomes insufficient, and in particular, it is arranged on the downstream side of the indoor heat exchanger. Insufficient sterilization of the crossflow fan. Therefore, depending on the use conditions, mold spores adhering to the fan surface may propagate and accumulate due to the attachment of fine dust, which may cause a reduction in blowing efficiency.

  The present invention has been made in consideration of the above-described circumstances. An air conditioner equipped with a fan cleaning device that automatically removes dust from an indoor crossflow fan in a short time without taking up space in the indoor unit. The purpose is to provide indoor units.

  It is another object of the present invention to provide an indoor unit for an air conditioner having a space-efficient fan cleaning device that automatically removes dust from an indoor crossflow fan and an air filter cleaning device that automatically removes dust from an air filter. Objective.

  In order to achieve the above-described object, an indoor unit of an air conditioner according to the present invention includes an air filter, an indoor heat exchanger, and an indoor heat exchanger in an air passage that communicates an air inlet and an outlet of an indoor unit body. An air conditioner indoor unit in which a cross-flow fan along the longitudinal direction is arranged on the ventilation secondary side of the fan includes a fan cleaning device that cleans the cross-flow fan, and the fan cleaning device rotates along the blade of the cross-flow fan A fan cleaning unit having a fan dust remover that moves in the axial direction to remove dust attached to the blade, and a moving device that moves the fan cleaning unit are provided.

  In the indoor unit of the air conditioner according to the present invention, an air filter cleaning unit that cleans the air filter is disposed in the air passage, and the air filter cleaning unit is further provided in the air passage. The air filter cleaning unit includes a dust removing unit including a dust removing member for removing dust from the air filter and a dust containing unit for containing the removed dust, and is arranged in a direction of the rotation axis of the cross-flow fan. The air filter is configured to be movable along the outer peripheral surface of the air filter, and is configured integrally with the fan cleaning unit, and the drive device operates the fan cleaning unit and the air filter cleaning unit in conjunction with each other. It is characterized by making it.

  According to the indoor unit of an air conditioner according to the present invention, it is possible to provide an indoor unit of an air conditioner including a fan cleaning device that automatically removes dust from a cross-flow fan that constitutes an indoor fan.

  Further, according to the indoor unit of the air conditioner according to the present invention, the fan cleaning device that automatically removes dust from the indoor crossflow fan and the air filter cleaning device that automatically removes dust from the air filter are space efficient. A well-equipped indoor unit for an air conditioner can be provided.

  An indoor unit of an air conditioner according to a first embodiment of the present invention will be described with reference to the accompanying drawings.

  FIG. 1 is a side sectional view of an indoor unit of an air conditioner according to a first embodiment of the present invention, and FIG. 2 is a view of the indoor unit main body from which the front panel of the air conditioner according to the first embodiment of the present invention is removed. FIG. 3 is a perspective view with a part cut away, and FIG. 3 is a side sectional perspective view of an air filter cleaning unit and a dust removing unit of the indoor unit of the air conditioner according to the first embodiment of the present invention.

  As shown in FIGS. 1 to 3, the indoor unit 1 of the air conditioner according to the first embodiment has an indoor unit body 2, and the indoor unit body 2 has a front suction port on the front surface thereof. 2a is opened, an upper suction port 2b is opened in the upper surface portion, and a blower outlet 2c is opened in the lower portion.

  An air filter 4, an indoor heat exchanger 5, and a cross-flow fan 6 constituting an indoor fan are arranged in the air passage 3 that communicates both the suction ports 2 a and 2 b and the air outlet 2 c, and one end side of the indoor unit body 2 An electrical component storage box 14 is arranged in the box.

  The air filter 4 is made up of an air filter vertical portion 41 and an air filter horizontal portion 42 that are arranged in a L shape when viewed from the side, with a filter net made of metal or a metal vapor deposited on the surface. The air filter horizontal portion 42 is arranged between the suction port 2a and the front-side heat exchanger 5a constituting a part of the indoor heat exchanger 5, and removes dust contained in the conditioned air sucked from the front suction port 2a. Is arranged between a part of the front suction port 2a and the upper suction port 2b and the rear side heat exchanger 5b constituting a part of the indoor heat exchanger 5, and is included in the conditioned air sucked from the upper suction port 2b Remove dust.

  Further, an air filter cleaning unit 8 is disposed facing the air filter 4, and a fan cleaning unit 7 is disposed facing the cross flow fan 6.

  The air filter cleaning unit 8 is a combination of a moving device 9 that moves together with the fan cleaning unit 7 and an exhaust device 10 and an exhaust duct 11 for discharging the dust removed by the air filter cleaning unit 8 to the outside. A filter cleaning device is configured.

  The air filter cleaning unit 8 removes, for example, scrapes dust adhering to the air filter 4. The air filter cleaning unit 8 has an L shape in side view like the air filter 4 and scrapes dust adhering to the vertical portion 41 of the air filter. It consists of a vertical part 81 of the unit and a horizontal part 82 of the cleaning unit that scrapes dust adhering to the horizontal part 42 of the air filter.

  As shown in FIGS. 4 to 5, the cleaning unit 8 includes a case vertical portion 81 a and a case horizontal portion 82 a, each of which has an outer shape of a vertical portion 81 and a horizontal portion 82 that is formed in a rectangular parallelepiped hollow L-shape. Consists of.

The vertical part 81 of the cleaning unit is provided with a brush opening 81b ₁ in the case vertical part 81a, and a dust removing part 81b that accommodates a brush 81c as a dust scraper as dust removing means along the longitudinal direction. When communicates adjacent to the dust removal unit 81b, the dust containing portion 81d is provided to form a space for accommodating the dust removed with an inlet 81d ₁ intake air, and the brush 81c is rotatably bearing member 81e It is pivotally supported between the drive motor 81g.

The horizontal portion 82 of the cleaning unit, the brush opening 82b ₁ is provided in the case the horizontal portion 82a, the inner, dust removal for accommodating the brush 82c as dust scraper is a dust removing means along the longitudinal direction A dust accommodating portion 82d that communicates adjacent to the dust removing portion 82b and that has an air discharge port 82d ₁ to form a space for accommodating the removed dust is provided, and the brush 82c is rotatable so as to be a bearing member. It is pivotally supported between 82e and a driving motor 82g.

  In the fan cleaning unit 7, an arm 7a is integrally extended from the case vertical portion 81a, and an elongated plate-like brush short in the width direction shown in FIG. 7 or a ring-like brush shown in FIG. A fan dust remover 7b such as is attached. This fan dust remover 7b is a combination of a moving device 9 that moves together with the air filter cleaning device, and an exhaust device 10 and an exhaust duct 11 for discharging the dust removed by the fan cleaning unit 7 to the outside. A fan cleaning device is configured.

  Further, as shown in FIG. 2, the moving device 9 includes a ball screw 9a attached to the indoor unit body 2 and a ball screw 9a attached to the indoor unit body 2 along the longitudinal direction of the indoor unit body 2. A screw drive motor 9b for rotational driving and a guide groove 9c attached to the indoor unit main body 2 along the longitudinal direction thereof are provided.

A ball screw 9a is screwed into a screw member 9d provided near the intersection of the vertical portion 81 and the horizontal portion 82 of the air filter cleaning unit 8, and a guide pin 9e provided at an end of the horizontal portion 82 is slid into the guide groove 9c. rotatably in engagement grooves engaged refracts portion 7a ₁ and slidably abutting the back and arm 7a of the indoor unit of the main body 2 angle portion 2d for supporting the air filter 4, by driving the screw driving motor 9b Then, the air filter cleaning unit 8 and the fan dust remover 7b are moved horizontally through the ball screw 9a.

As shown in FIG. 9, the exhaust device 10 disposed on the side of the indoor unit main body 2 opposite to the installation position of the electrical component storage box 14 has a cross-flow fan 6 facing the suction port 10 a of the exhaust device 10. side space 6b are communicated, further, dust accommodating portion 81d of the exhaust system 10 and the air filter cleaning unit 8, when the communication between the 82d, the discharge port 10b is communicated with the air inlet 81d ₁ and the exhaust device 10 of the dust receiving portion 81d and, through connection port 11a is communicated to the air outlet 82d ₁ and the exhaust duct 11 of the dust receiving portion 82d, the air of the blades 6a near the cross flow fan 6 is drawn into the exhaust system 10 through the side space 6b and the suction port 10a is, the discharge port 10b of the exhaust device 10, the inlet 81d ₁ intake air of dust accommodating section, the dust containing portion 81d, 82d, air outlet 82d ₁ of the dust containing portion, is discharged to the outdoor through the exhaust duct 11.

  When the air filter cleaning unit 8 and the fan cleaning unit 7 are not operating, the air filter cleaning unit 8 and the fan dust remover 7b stand by at a standby position P in front of the electrical component storage box 14 indicated by a dotted line in FIG. . The air filter cleaning unit 8 is supplied with power by a wire (not shown) that is wound freely.

  Next, the function of the air filter cleaning unit 8 will be described.

  As shown in FIGS. 1 to 3, the room air sucked into the main body 2 through the front suction port 2 a and the upper suction port 2 b has dust removed by an air filter 4 disposed in the air blowing path 3, The air is conditioned by the indoor heat exchanger 5 and blown out from the outlet 2c through the crossflow fan 6.

  When such air-conditioning operation is performed for a long time and dust accumulates on the blades 6a of the air filter 4 and the crossflow fan 6, the dust detection sensor detects this or calculates a predetermined operation time, and the crossflow fan 6 Rotate at a low speed. Further, the drive motor 81g of the air filter cleaning unit 8 in the vicinity of the standby position P is rotated to rotate the brush 81c, and the dust removal from the air filter vertical portion 41 is started by the rotating brush 81c as shown in FIG. Then, the drive motor 82g is rotated, and as shown in FIG. 6, removal of dust from the air filter horizontal portion 42 is started by the rotating brush 82c. At the same time, the screw drive motor 9b is rotated to rotate the ball screw 9a, and the air filter cleaning unit 8 is horizontally moved toward the exhaust device 10 via the screw member 9d to clean the air filter 4. At the same time, as shown in FIG. 3, the fan dust remover 7 b is moved in the lateral direction while abutting against the blade 6 a of the cross-flow fan 6 to remove dust from the blade 6 a of the cross-flow fan 6.

  The dust removed from the air filter vertical part 41 and the air filter horizontal part 42 by the brush 81c and the brush 82c is temporarily stored in the dust containing part 81d and the dust containing part 82d provided in the vicinity of the brush 81c and the brush 82c. On the other hand, the fan dust remover 7b cleans the cross-flow fan 6 and removes dust accumulated on the blade 6a of the cross-flow fan 6.

As shown in FIG. 9, when the air filter cleaning unit 8 continues to move horizontally and reaches a position where the air filter cleaning unit 8 contacts the exhaust device 10, the exhaust device 10 starts to rotate and is near the side space 6 b. The air is sucked into the exhaust device 10 from the suction port 10a of the exhaust device 10 together with the dust removed by the fan dust remover 7b, and the sucked air is discharged from the discharge port 10b of the exhaust device 10 to the dust container. air inlet 81d ₁ through to dust accommodating section 81d, fed to 82d, the dust containing portion 81d, with accumulated dust 82d, air outlet 82d ₁ of the dust containing portion, is discharged to the outdoor through the exhaust duct 11 .

  When a series of dust removal operations are completed, the air filter cleaning unit 8 and the fan dust removal tool 7b return to the standby position P and wait for the next dust removal operation. Since the air filter cleaning unit 8 and the fan dust remover 7b stand by avoiding the front ventilation path of the air filter 4 and the cross flow fan 6, the ventilation efficiency is not increased and the ventilation efficiency can be improved.

  By the dust removing operation as described above, dust accumulated on the air filter 4 and the blade 6a of the cross flow fan 6 is simultaneously removed and automatically cleaned, and the air conditioning capability of the air conditioner is maintained.

Since the air outlet 82d ₁ and the exhaust duct 11 of the dust containing portion communicates, by switches exhaust mode of the exhaust device 10, to discharge the dust accumulated in the blade 6a and the air filter cleaning unit 8 of the cross flow fan 6 efficiently Can do.

  The air filter cleaning unit 8 is unitized, and the fan cleaning unit 7 for the cross flow fan is provided integrally with the air filter cleaning unit 8, so that the efficiency of the space is improved.

  According to the indoor unit of the air conditioner of the first embodiment, the fan cleaning device that automatically removes dust from the cross-flow fan that constitutes the indoor blower, and the air filter cleaning that automatically removes dust from the air filter. An indoor unit of an air conditioner provided with a space efficient device is realized.

  Moreover, the indoor unit of the air conditioner of 2nd Embodiment of this invention is demonstrated.

  In the second embodiment, the first embodiment includes a fan cleaning device and an air filter cleaning device, whereas a fan cleaning unit is provided alone.

  For example, as shown in FIGS. 10 and 11, the indoor unit 1A of the air conditioner of the second embodiment includes a fan cleaning device 7A.

  The fan cleaning unit 7A includes an arm 7a and a fan dust remover 7b attached to the tip of the arm 7a, and the movement is controlled by a moving device 9 provided in front of the indoor unit main body. In this moving mechanism, the ball screw 9a of the moving device 9 is screwed into a threaded portion 9e provided at the end of the arm 7a, and the ball screw 9a is rotated by a screw driving motor 9b, whereby the fan dust removing tool 7b. Is moved along the cross flow fan 6 to remove dust adhering to the blade 6a of the cross flow fan 6.

  As a result, bacteria and dust such as mold spores adhering to the crossflow fan are removed and cleaned automatically.

  The other configuration is not different from the indoor unit of the air conditioner shown in FIG.

  Furthermore, an air conditioner indoor unit according to a third embodiment of the present invention will be described.

  In the third embodiment, the fan cleaning unit 7 </ b> A is provided in front of the indoor unit body 2 in the second embodiment, but is provided on the rear rear surface of the indoor unit body 2.

  For example, as shown in FIG. 12, the indoor unit 1B of the air conditioner of the third embodiment includes a fan cleaning unit 7B. The fan cleaning unit 7B includes a fan dust remover 7b and a moving device 9, and an arm 7a to which the fan dust remover 7b is attached moves through a slit-like through hole 2e provided in the indoor unit body 2. It is installed freely. The moving mechanism is the same as the configuration described in the air conditioner indoor unit of the second embodiment. The fan dust remover 7b is moved along the crossflow fan 6 to remove dust accumulated on the blade 6a of the crossflow fan 6.

  Thereby, the dust accumulated in the crossflow fan is removed and automatically cleaned.

The sectional side view of the indoor unit of the air conditioner of 1st Embodiment of this invention. The perspective view which cuts and shows a part of main body of the indoor unit which removed the front panel of the air conditioner of 1st Embodiment of this invention. The side cross-sectional perspective view of the air filter cleaning unit and dust removal part of the indoor unit of the air conditioner of 1st Embodiment of this invention. The side section perspective view which cuts and shows a part of air filter cleaning unit used for the indoor unit of the air harmony machine of a 1st embodiment of the present invention. Sectional drawing in alignment with the AA of FIG. Sectional drawing which follows the BB line of FIG. The perspective view of the dust removal tool for fans used for the indoor unit of the air conditioner of 1st Embodiment of this invention. The perspective view of the dust removal tool for fans of other embodiment used for the indoor unit of the air conditioner of 1st Embodiment of this invention. The conceptual diagram at the time of communication of the air filter cleaning unit used for the indoor unit of the air conditioner of 1st Embodiment of this invention, the dust removal tool for fans, and an exhaust device. The perspective view of the indoor unit of the air conditioner which removed the front panel of 2nd Embodiment of this invention. The perspective view of the dust removal tool for fans used for the indoor unit of the air conditioner of 2nd Embodiment of this invention. The sectional side view of the indoor unit of the air conditioner of 3rd Embodiment of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Indoor unit of air conditioner, 2 ... Indoor unit main body, 3 ... Air supply path, 4 ... Air filter, 5 ... Indoor heat exchanger, 6 ... Cross-flow fan, 7 ... Fan cleaning unit, 7b ... Dust removal tool for fans , 8 ... air filter cleaning unit, the vertical portion 81 ... cleaning unit, 81a ... case vertical section, 81b ... dust removal unit, 81b 1 _... brush opening, 81c ... brush, 81d ... dust receiving portion, 81d 1 _... dust receiving 82, horizontal part of the cleaning unit, 82a, horizontal part of the case, 82b, dust removing part, 82b ₁ ... opening for brush, 82c, brush, 82d, dust accommodating part, 82d ₁ ... of the dust accommodating part Air discharge port, 9 ... moving device, 10 ... exhaust device, 11a ... suction port, 11b ... discharge port, 11 ... exhaust duct, 11a ... connection port.

Claims (4)

The interior of an air conditioner in which an air filter, an indoor heat exchanger, and a cross-flow fan along the longitudinal direction are disposed on the ventilation secondary side of the indoor heat exchanger in the air passage that communicates the air inlet and outlet of the indoor unit main body. In the machine
A fan cleaning device for cleaning the crossflow fan;
The fan cleaning device includes a fan cleaning unit having a fan dust remover that moves in the direction of the rotation axis along the blade of the cross-flow fan to remove dust attached to the blade,
An air conditioner indoor unit comprising a moving device for moving the fan cleaning unit. The air passage further includes an air filter cleaning unit,
The air filter cleaning unit includes a dust removing unit that includes a dust removing member that removes dust from the air filter and a dust containing unit that contains the removed dust, and an outer periphery of the air filter in the direction of the rotation axis of the cross-flow fan. A configuration in which the fan cleaning unit is configured to be movable along the surface, and is configured integrally with the fan cleaning unit, and the drive device causes the fan cleaning unit and the air filter cleaning unit to operate in conjunction with each other. The indoor unit of the air conditioner according to claim 1. The indoor unit of an air conditioner according to claim 1 or 2, wherein the fan cleaning unit moves and stands by to a position outside the cross-flow fan when the fan cleaning operation is not performed. 2. The air conditioner according to claim 1, further comprising an exhaust device that communicates with one side surface space of the cross-flow fan and exhausts dust removed by the fan dust remover to the outside through an exhaust duct. Indoor unit of the machine.

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