JP2019015484A - Air conditioner - Google Patents

Abstract

To provide an air conditioner which includes an air purification function without making a constitution complex and which has high usability.SOLUTION: An air conditioner includes: suction ports 11A, 11B; a heat exchanger 30; a blowout port 12; and an air cleaning filter 80A. The air conditioner includes one piece of a panel 2 in which at least part can be separated from a body 1, and which changes arrangement position of the air cleaning filter 80A while holding the air cleaning filter 80A. The air conditioner includes: a first operation mode in which air form the suction ports 11A, 11B is heat-exchanged in the heat exchanger 30; and a second operation mode in which dust in the air from the suction ports 11A, 11B is collected in the air cleaning filter 80A. In the first operation mode, at least part of the panel 2 and the air cleaning filter 80A are separated from the body 1, and in the second operation mode, the air cleaning filter 80A is arranged in the position where a surface area of the air cleaning filter 80A in which air passes becomes larger than in the first operation mode.SELECTED DRAWING: Figure 3

Description

  The present invention relates to an air conditioner provided with an air purifying filter.

  Conventionally, this type of air conditioner is provided with a plurality of louvers that are opened and closed with air holes at the suction port of the indoor unit, and each of the plurality of louvers is integrated with an air purifying filter. In the air cleaning operation, the louver is in a closed state, and the air sucked into the suction port is sucked through the air purifying filter from the vent hole provided in the louver. On the other hand, at the time of air-conditioning operation (air-conditioning operation), the louver is in an open state, and the air that is sucked into the suction port does not pass through the air purification filter (see, for example, Patent Document 1).

JP 2001-116282 A

  However, since the conventional configuration includes a plurality of louvers integrated with the air purifying filter, the configuration is complicated.

  The present invention solves the above-described conventional problems, and an object thereof is to provide a highly usable air conditioner having an air purification function without complicating the configuration.

  In order to solve the conventional problems, an air conditioner of the present invention exchanges heat with a suction port provided in a main body, a fan that sucks air from the suction port, and air sucked from the suction port. A heat exchanger, an air outlet that is provided in the main body and blows out an air flow generated by the operation of the fan, and an air purifying filter, and is provided in the main body, and at least a part thereof can be separated from the main body. The first operation in which one panel for changing the arrangement position of the air purification filter is held while holding the air purification filter, and the air sucked from the suction port is heat-exchanged by the heat exchanger. Mode and a second operation mode in which dust contained in the air flow is collected by the air cleaning filter, and in the first operation mode, at least a part of the panel and the In the second operation mode, the air purifying filter is separated from the main body, and in the second operation mode, the air surface is located at a position where the surface area of the passage surface through which the air flow passes through the air purification filter is larger than in the first operation mode. The present invention is characterized in that a clean filter is arranged.

  Thereby, the surface area of the passage surface of the air cleaning filter through which the air flow generated by the operation of the fan passes can be increased during the air cleaning operation which is the second operation mode, so that high air cleaning performance can be obtained. it can. Further, in the air conditioning operation that is the first operation mode, the air purification filter is separated from the main body, so that the air blowing performance does not deteriorate during the cooling operation or the heating operation, and the cooling capacity or the heating capacity decreases. There is no deterioration in efficiency. Furthermore, since the arrangement position of the air purifying filter is moved by one panel, a highly usable air conditioner having an air purifying function can be provided without complicating the configuration.

ADVANTAGE OF THE INVENTION According to this invention, the air conditioner with high usability provided with the air purification function can be provided, without making a structure complicated.

The longitudinal cross-sectional view of the indoor unit of the air conditioner at the time of the operation stop in Embodiment 1 of this invention Vertical sectional view of the indoor unit of the same air conditioner in the first operation mode Vertical sectional view of the indoor unit of the same air conditioner in the second operation mode

  The first invention is provided in the main body, a suction port provided in the main body, a fan that sucks air from the suction port, a heat exchanger that exchanges heat with the air sucked from the suction port, An air outlet from which an air flow generated by the operation of the fan blows out, and an air purifying filter, provided in the main body, at least a part of which can be separated from the main body, while holding the air purifying filter, There is one panel for changing the arrangement position of the air purifying filter, the first operation mode in which the air sucked from the suction port is heat-exchanged by the heat exchanger, and the dust contained in the air flow is A second operation mode in which dust is collected by the air purification filter, and in the first operation mode, at least a part of the panel and the air purification filter are separated from the main body. In the second operation mode, the air purification filter is arranged at a position where a surface area of a passage surface through which the air flow passes through the air purification filter is larger than that in the first operation mode. It is a featured air conditioner.

  Thereby, the surface area of the passage surface of the air cleaning filter through which the air flow generated by the operation of the fan passes can be increased during the air cleaning operation which is the second operation mode, so that high air cleaning performance can be obtained. it can. Further, in the air conditioning operation that is the first operation mode, the air purification filter is separated from the main body, so that the air blowing performance does not deteriorate during the cooling operation or the heating operation, and the cooling ability or the heating ability decreases. There is no deterioration in efficiency. In addition, since the arrangement position of the air purifying filter is moved by one panel, an air conditioner having a high usability having an air purifying function can be provided without complicating the configuration.

  According to a second aspect of the invention, in particular, in the first aspect of the invention, in the second operation mode, the air purification filter is disposed at a position that is not separated from the main body as compared with the case of the first operation mode. It is characterized by having a configuration.

  Thereby, when the second operation mode is executed, the surface area of the air purifying filter through which the air flow generated by the operation of the fan flows can be made larger than when the first operation mode is executed. In the air cleaning operation that is the second operation mode, high air cleaning performance can be obtained. Moreover, since the air volume can be ensured during the air conditioning operation that is the first operation mode, it is possible to suppress a decrease in the performance of the air conditioning operation (performance during the air conditioning operation).

  In a third aspect of the invention, particularly in the first or second aspect of the invention, in the second operation mode, the air purifying filter is not separated from the main body, and at least a part of the panel is separated from the main body. It is characterized by having the structure which does.

  Thereby, in the air cleaning operation which is the second operation mode, even if the panel is separated from the main body, the air purification filter is not separated from the main body. At the same time, since the air purification filter is disposed in the flow path of the air flow generated by the operation of the fan, the air blowing performance can be ensured and high air purification performance can be obtained.

In a fourth aspect of the invention, in particular, in any one of the first to third aspects of the invention, the air purifying filter is disposed to face the suction port.

  Thereby, before the air sucked from the suction port passes through the air purification filter before passing through the inside of the main body, high air cleaning performance can be obtained.

  According to a fifth aspect of the invention, in particular, in any one of the first to fourth aspects of the invention, the operation switch that instructs execution of the second operation mode is provided, and when the user operates the operation switch, the second operation mode is provided. The operation mode is executed.

  Thereby, when a user requires an air cleaning operation, the air cleaning operation which is a 2nd operation mode can be performed according to the instruction | indication. Also, when the air purification operation that is the second operation mode is not necessary, or when it is desired to prioritize the air conditioning operation capability and the energy saving performance that is the first operation mode over the air purification operation that is the second operation mode. Since the air cleaning operation which is the second operation mode can be stopped by operating the switch, usability can be improved.

  In a sixth aspect of the invention, in particular, in any one of the first to fifth aspects of the invention, a dust detection sensor that detects at least the presence or absence of dust contained in air is provided, and when the dust detection sensor detects dust, The second operation mode is executed.

  Thereby, the air purifying function which is a 2nd operation mode can be automatically made effective according to the air cleaning degree.

  In a seventh aspect of the present invention, in particular, in any one of the first to sixth aspects, the set rotational speed of the fan in the second operation mode is set to be at least lower than the minimum set rotational speed of the fan in the first operation mode. It is characterized by being enlarged.

  As a result, it is possible to prevent a decrease in the blown-out air volume due to an increase in the ventilation resistance by the air cleaning filter and to secure an air volume that can sufficiently exhibit the air cleaning function.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. Note that the present invention is not limited to the embodiments.

(Embodiment 1)
1 to 3 are longitudinal sectional views of the indoor unit of the air conditioner according to the first embodiment.

  The air conditioner according to the present embodiment includes an indoor unit and an outdoor unit. The indoor unit and the outdoor unit are connected by refrigerant piping and control wiring, and the indoor unit and the outdoor unit constitute a heat pump. The outdoor unit is provided with a compressor. The indoor unit is attached to a wall surface in the room.

  The indoor unit of the air conditioner according to the present embodiment includes a main body 1 that forms an inlet 11A, an inlet 11B, and an outlet 12, and a front panel 2 that is provided on the front surface of the main body 1 and opens and closes the inlet 11B. The front panel 2 has a front panel opening / closing means (not shown) for separating from the main body 1.

  In addition, even if the whole front panel 2 is not separated from the main body 1 as in the present embodiment, a part of the front panel 2 is pivotally supported by the main body 1 so that the front panel 2 is rotated. Another part may be configured to be separated from the main body 1.

11 A of suction inlets are formed in the upper surface of the main body 1, 11 B of suction inlets are formed in the front surface of the main body 1, and the blower outlet 12 is formed in the lower surface of the main body 1. FIG. The rear surface 13 of the main body 1 becomes a wall surface, and the main body 1 is attached to this wall surface. Inside the main body 1, a fan 20 that sucks air from the suction ports 11A and 11B and a heat exchanger 30 that exchanges heat with the air sucked from the suction ports 11A and 11B are provided. A cross-flow fan (cross flow fan) is suitable for the fan 20. The fan 20 has a fan motor connected to any one of the left and right rotating shafts (not shown).

  A downstream air flow path 40 extending from the downstream side of the fan 20 to the upstream side of the air outlet 12 includes a rear guider 41 that is arranged downstream of the fan 20 and guides the flow of air, and a stabilizer 42 that faces the rear guider 41. And both side walls (not shown) of the main body 1.

  The air outlet 12 is provided with an up / down air direction changing blade 51 and a left / right air direction changing blade 52. The left and right wind direction changing blades 52 are arranged upstream of the up and down wind direction changing blades 51. The up-and-down air direction changing blade 51 opens and closes the air outlet 12 and changes the air blowing up and down. The left / right wind direction changing blade 52 changes the air blowing in the left / right direction.

  A heat exchanger 30, an air filter 70, and an air purification filter 80 </ b> A are disposed in the air flow paths 60 and 61 on the upstream side of the fan 20. The air cleaning filter 80 </ b> A is formed as a separate body from the air filter 70. The air filter 70 is a filter for coarse dust for the purpose of capturing relatively large dust. On the other hand, the air purification filter 80A is a filter that has a larger ventilation resistance than the air filter 70 and aims to capture fine particles that pass through the air filter 70, and is preferably a pleated type or a non-woven type.

  The air purification filter 80A is supported by one or both of a main body side filter support member (not shown) provided in the main body 1 and a panel side air purification support member 81 provided in the front panel 2, and the air flow It arrange | positions in the position facing the suction inlet 11B of the path | route 60. FIG. The main body side filter support member and the panel side air purification support member 81 hold or open the air purification filter 80A as necessary.

  The air purification filter 80 </ b> A is disposed in the air flow path 60 on the upstream side of the air filter 70. Compared to the case where the air purification filter 80A is arranged in the air flow path 61 between the air filter 70 and the heat exchanger 30 by arranging the air purification filter 80A in the air flow path 60 on the upstream side of the air filter 70. Thus, it is possible to prevent the performance of the air cleaning filter 80A from being deteriorated due to condensation during cooling operation.

  The air conditioner according to the present embodiment can perform at least the cooling operation, the heating operation, and the air cleaning operation, which are air conditioning operations. Switching between these operations is performed by the user using the operation device 100. This can be done by instructing.

  The operation device 100 includes an operation switch 101 for instructing a cooling operation, an operation switch 102 for instructing a heating operation, and an operation switch 103 instructing an air cleaning operation. When the user operates the operation switch 101 for instructing the cooling operation or the operation switch 102 for instructing the heating operation, the front panel 2 is moved away from the main body 1, that is, the front panel 2 is opened. A cooling operation or a heating operation is performed.

  At this time, the air purifying filter 80 </ b> A moves in a direction away from the main body 1 with the opening operation of the front panel 2. Then, when the same operation switches 101 and 102 are operated once again to stop the operation, the front panel 2 is closed. At this time, the air purifying filter 80A moves to a position facing the suction port 11B of the air flow path 60 which is the original position together with the closing operation of the front panel 2, and the cooling operation or the heating operation is stopped.

Further, when the user operates the operation switch 103 for instructing the air cleaning operation, the air cleaning filter 80A is not moved, and the front panel 2 alone is placed in a position facing the suction port 11B of the air flow path 60. Open and move away from the main body 1. As a result, it is possible to execute an air cleaning operation that makes the air cleaning function effective.

  The air conditioner according to the present embodiment includes a dust detection sensor 110 that detects at least the presence or absence of dust contained in the air. Based on the result of the degree of air cleaning detected by the dust detection sensor 110, when the air conditioning operation and the air cleaning operation are stopped, the air cleaning filter 80A is not moved and the air flow path 60 is opposed to the suction port 11B. The front panel 2 is opened and the air cleaning operation is started while being placed at the position where the air purification is performed.

  When the air cleaning operation is not performed at the same time as the air conditioning operation, only the air cleaning filter 80A has the air on the main body 1 side from the state where the air cleaning filter 80A is separated from the main body 1 together with the front panel 2. It moves to a position facing the suction port 11B of the flow path 60. According to the present embodiment, it is possible to automatically execute the air cleaning operation for enabling the air cleaning function according to the degree of air cleaning detected by the dust detection sensor 110, that is, when dust is present.

  As described above, in the air conditioner according to the present embodiment, the air purifying filter 80A and the front panel 2 are both separated from the main body 1, and the air sucked from the suction ports 11A and 11B passes through the air filter 70. In the first operation mode (air conditioning operation) for exchanging heat with the heat exchanger 30, the air purification filter 80A is disposed at a position facing the suction port 11B of the air flow path 60, and only the front panel 2 is removed from the main body 1. A second operation mode (air purification) in which all or part of the air that is separated and sucked from the suction ports 11A and 11B passes through the air purification filter 80A, the air filter 70, the air purification filter 80A, and the heat exchanger 30. At least. The first operation mode (air conditioning operation) and the second operation mode (air cleaning operation) can be simultaneously operated.

  The set rotation speed of the fan 20 in the second operation mode is set to be larger than at least the minimum set rotation speed of the fan 20 in the first operation mode. For example, when the rotation speed of the fan 20 in the first operation mode can be changed to “weak”, “medium”, and “strong”, the set rotation speed of the fan 20 in the second operation mode is at least the “medium” rotation speed. Or, the rotation speed is larger than the “weak” rotation speed and smaller than the “medium” rotation speed.

  As described above, by setting the set rotational speed of the fan 20 in the second operation mode to be larger than at least the minimum set rotational speed of the fan 20 in the first operation mode, the air outlet is increased due to an increase in ventilation resistance by the air cleaning filter 80A. Therefore, it is possible to prevent a decrease in the amount of air blown from 12, and to secure an air amount that can sufficiently exhibit the air cleaning function. The main body 1 is provided with a display means (not shown) during air cleaning operation indicating that the air cleaning function which is the second operation mode is operating. The display means during the air cleaning operation may be provided in the operating device 100 other than the main body 1 or in both the main body 1 and the operating device 100.

  About the air conditioner comprised as mentioned above, the operation | movement is demonstrated below. In both the first operation mode and the second operation mode, the up-and-down air direction changing blade 51 is in a state in which the air outlet 12 is open. However, in FIGS. All show only the operation of the front panel 2 and the air purifying filter 80A.

  FIG. 1 is a longitudinal sectional view of an indoor unit of an air conditioner when an air conditioning operation that is a first operation mode and an air purification operation that is a second operation mode are stopped.

  When the air conditioning operation is stopped, the air purification filter 80A is provided by either or both of a main body side filter support member (not shown) provided in the main body 1 and a panel side air purification support member 81 provided in the front panel 2. It is supported and arranged at a predetermined position, that is, a position facing the suction port 11B of the air flow path 60 that is sucked from the suction ports 11A and 11B. The main body side filter support member and the panel side air purification support member 81 can select a support state in which the air purification filter 80A is held and a release state.

  FIG. 2 is a longitudinal sectional view of the indoor unit in the first operation mode of the air conditioner.

  In FIG. 2, the front panel 2 and the air purification filter 80A are separated from the main body 1, that is, the front panel 2 is open while being integrated with the air purification filter 80A. At this time, the main body side filter support member is the air purification filter. 80A is released without being held, and the panel-side air cleaning support member 81 is in a state of holding the air cleaning filter 80A, and the front panel 2 performs the opening operation in this state. The opening / closing operation of the front panel 2 is performed by the front panel opening / closing means.

  When the user operates the operation switch 101 with the operation device 100, the cooling operation is started. When the user operates the operation switch 102, the heating operation is started. At this time, the front panel 2 and the air purifying filter are started. 80A changes from the stop state of FIG. 1 to the state of the first operation mode of FIG. 2, and before and after this, the fan 20 and the compressor are driven to start the cooling operation or the air conditioning operation of the heating operation. When the fan 20 starts driving, air is sucked from the suction ports 11 </ b> A and 11 </ b> B, passes through the air filter 70 and the heat exchanger 30, and then blows out from the air outlet 12.

  Here, the air sucked from the suction ports 11 </ b> A and 11 </ b> B passes through the air flow path 60 and the air filter 70 and passes through the heat exchanger 30, but the air purification filter 80 </ b> A is located outside the air flow path 60. Therefore, it does not pass through the air purification filter 80A, that is, the air purification filter 80A does not hinder ventilation. Therefore, the air blowing performance is not lowered during the cooling operation or the heating operation, and therefore the cooling ability or the heating ability is not lowered or the efficiency is not deteriorated.

  FIG. 3 is a longitudinal sectional view of the indoor unit in the second operation mode of the air conditioner.

  In FIG. 3, the air purifying filter 80 </ b> A is disposed only at the predetermined position of the main body 1, that is, at the position facing the suction port 11 </ b> B of the air channel 60 sucked from the suction ports 11 </ b> A and 11 </ b> B. Is separated from the inlet 11B of the main body 1, that is, the front panel 2 is opened. At this time, the main body side filter support member supports the air purification filter 80A, and the panel side air purification support member 81 is in a state of releasing the air purification filter 80A, and only the front panel 2 performs the opening operation in this state. .

  When the user operates the operation switch 103 with the operation device 100, the air purification operation is started. At this time, the front panel 2 and the air purification filter 80A are changed from the stopped state of FIG. Before and after this, the fan 20 is driven to start the air cleaning operation, and the air cleaning operation display means starts displaying.

  When the fan 20 starts driving, at least a part of the air sucked from the suction ports 11A and 11B passes through the air cleaning filter 80A and air cleaning is performed, and then passes through the air filter 70 and the heat exchanger 30. After that, the purified air blows out from the outlet 12. As a result, indoor air can be purified.

Here, although at least a part of the air sucked from the suction ports 11A and 11B passes through the air cleaning filter 80A, the ventilation resistance becomes higher than that in the first operation mode in FIG. By disposing the air purifying filter 80A at a position opposite to the suction port 11B, the surface area of the passage surface through which the air sucked from the suction ports 11A and 11B passes through the air purifying filter 80A is maximized, or the second in FIG. Since it can be made larger than that in the one operation mode, the air sucked from the suction port 11B can easily pass through the air cleaning filter 80A.

  Further, only the front panel 2 is separated from the suction port 11B of the main body 1, that is, the front panel 2 is in an open state, so that the ventilation resistance when air passes through the air purification filter 80A is minimized. Therefore, it becomes easy to secure the air volume during the air cleaning function, and high air cleaning performance can be obtained.

  In addition, when the first operation mode (air conditioning operation) and the second operation mode (air cleaning operation) are simultaneously performed, it is easy to secure the air volume, so that both the air purification capability and the air conditioning performance are improved. Is possible.

  Further, in the second operation mode alone operation or in the simultaneous operation of the first operation mode (air conditioning operation) and the second operation mode (air purifying operation), the fan 20 is more effective than in the first operation mode alone operation. It is also possible to increase the amount of air that has decreased due to the ventilation resistance of the air cleaning filter 80A by increasing the number of rotations of. In addition, as a form of the display means during the air cleaning operation, a method in which a lamp such as an LED is repeatedly turned on and off can be considered.

  When the user operates the operation switch 101 or the operation switch 102 with the operation device 100 during the air cleaning operation, the cooling operation or the heating is performed while the air cleaning operation is performed in the state of the second operation mode in FIG. Operation starts. That is, from the state where the fan 20 is driven in the air cleaning operation, the compressor starts driving, and the first operation mode (air conditioning operation) of the cooling operation or the heating operation is started, and the first operation mode (air conditioning operation). The second operation mode (air cleaning operation) is executed while performing the operation, and the indoor air can be cleaned while keeping the room at a comfortable temperature.

  Further, when the user operates the operation switch 103 with the operation device 100 during the cooling operation or the heating operation, the state of the second operation mode in FIG. 3 is changed from the state of the first operation mode in FIG. The state is switched to the second operation mode (air cleaning operation) while the first operation mode (air conditioning operation) is being operated.

  The air that is the original position on the main body 1 side from the state in which the air purification filter 80A is supported by the panel-side air purification support member 81 on the back surface of the front panel 2 while the fan 20 and the compressor are driven. It arrange | positions in the position facing the suction inlet 11B of the flow path 60, and an air purifying operation is performed, performing the air conditioning operation similar to the above-mentioned.

  Furthermore, when the first operation mode (air-conditioning operation) and the second operation mode (air purification operation) are simultaneously operated, the user operates the operation device 100 to stop only one of the operations. Is also possible. In addition, when the first operation mode (air conditioning operation) and the second operation mode (air cleaning operation) are operated simultaneously, the cooling efficiency and the heating efficiency are required, or the operation efficiency of the cooling operation and the heating operation is reduced. When it is desired to increase the energy-saving operation, the second operation mode (air cleaning operation) can be stopped by the user's operation.

The air conditioner according to the present embodiment is equipped with a dust detection sensor 110 to detect the degree of air cleanliness. For this reason, when the first operation mode (air-conditioning operation) is executed and the second operation mode (air cleaning operation) is stopped, if the degree of cleanness is detected to be low, the second operation mode is automatically set. The operation mode (air cleaning operation) can be started.

  Regardless of whether or not the first operation mode (air-conditioning operation) is being performed, when the dust detection sensor 110 detects that the degree of cleanliness of indoor air is high during the second operation mode (air purification operation), It is also possible to automatically stop the two operation mode (air cleaning operation). Further, the second operation mode (air purification operation) is not started or stopped according to the degree of indoor air purification, but the rotation speed of the fan 20 is set in the second operation mode (air purification operation). It is also possible to change the air cleaning capability.

  In the air conditioner according to the present embodiment, the air purifying filter 80A is disposed at a position facing the suction port 11B of the air flow path 60 and separated from the main body 1 together with the front panel 2. A top panel that opens and closes the suction port 11A may be provided at a position facing the suction port 11A of the air flow path 60, and the air purifying filter 80A may be separated from the main body 1 together with the top panel.

  As described above, the air conditioner according to the present invention can make the air purifying function effective as necessary, and can improve the durability of the air purifying filter. It can also be applied to a harmony machine.

DESCRIPTION OF SYMBOLS 1 Main body 2 Front panel 11A, 11B Suction opening 12 Outlet 13 Rear surface 20 Fan 30 Heat exchanger 40 Downstream air flow path 41 Rear guider 42 Stabilizer 51 Up-and-down air direction change blade 52 Right-and-left air direction change blade 60 Air flow path 70 Air filter 80A Air cleaning Filter 81 Panel side emptying support member 100 Operation device 101, 102, 103 Operation switch 110 Dust detection sensor

Claims (7)

A suction port provided in the main body;
A fan for sucking air from the suction port;
A heat exchanger for exchanging heat with the air sucked from the inlet;
An air outlet provided in the main body and from which an air flow generated by the operation of the fan blows;
An air purifying filter,
A panel provided on the main body, at least partially separable from the main body, and holding the air purification filter while changing an arrangement position of the air purification filter;
A first operation mode in which air sucked from the suction port is heat-exchanged by the heat exchanger, and a second operation mode in which dust contained in the air flow is collected by the air cleaning filter; Including,
In the first operation mode, at least a part of the panel and the air purifying filter are separated from the main body,
In the second operation mode, the air purification filter is arranged at a position where a surface area of a passage surface through which the air flow passes through the air purification filter is larger than that in the first operation mode. A featured air conditioner. In the second operation mode, the air purifying filter is arranged at a position not separated from the main body as compared with the case of the first operation mode. The air conditioner described. 3. The apparatus according to claim 1, wherein in the second operation mode, the air purifying filter is not separated from the main body, and at least a part of the panel is separated from the main body. 4. Air conditioner. The air conditioner according to any one of claims 1 to 3, wherein the air purification filter is disposed to face the suction port. An operation switch that instructs execution of the second operation mode is provided, and the second operation mode is executed when a user operates the operation switch. Item 1. An air conditioner according to item 1. 6. A dust detection sensor for detecting at least the presence or absence of dust contained in the air, and the second operation mode is executed when the dust detection sensor detects dust. The air conditioner of any one of Claims. The set rotational speed of the fan in the second operation mode is greater than at least the minimum set rotational speed of the fan in the first operation mode. Air conditioner.

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