JP2009236482A - Air conditioner - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an air conditioner for maintaining the comfort inside a room even without the provision of a dedicated discharge vent. <P>SOLUTION: The air conditioner includes an indoor unit casing having vent outlets 224a, 224b formed therein, flaps 222a, 222b for switching between a first airflow direction for blowing air in a first airflow direction range B1 and a second airflow direction for blowing air in a second airflow direction range B2, and a controller for determining whether the temperature inside the room has stabilized, and in the case of a first condition in which condition the temperature inside the room has not stabilized, the controller controls the switching of the flaps 222a, 222b so that the first airflow direction is achieved. Additionally, in the case of a second condition in which condition of the temperature inside the room is stabilized, the controller controls the switching of the flaps 222a, 222b so that the second airflow direction is achieved. A second airflow direction A8 closest to a wall face which is an airflow within the second airflow range B2 is an airflow directed further toward the fall face than a first airflow direction A6 closest to the wall face which is an airflow within the first airflow range B1. A second room side airflow direction A7 which is an airflow within the second airflow direction range B2 is an airflow directed further toward the wall face side than a first room side airflow direction A5 which is an airflow within the first airflow range B1. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to an air conditioner having a function of forming an air barrier.

  In the room space, there is a central space (hereinafter referred to as interior zone) that is less susceptible to outdoor temperature throughout the year, and a space near windows and wall surfaces (hereinafter referred to as perimeter zone) that is susceptible to outdoor temperature. Exists. When the perimeter zone is affected by the outdoor temperature, the air affected by the outdoor temperature advances from the perimeter zone to the interior zone, so that the air in each space is diffused. For this reason, for example, when there is a person to be air-conditioned in the interior zone, even if air conditioning is performed in the room, the air affected by the outdoor temperature will enter the interior zone and contact the person to be air-conditioned. This may impair comfort.

  Therefore, some recent air conditioners have a function of forming an air barrier in the vicinity of a window or a wall surface in order to prevent air affected by outdoor temperature from entering the interior zone. For example, an air conditioner disclosed in Patent Document 1 (Japanese Patent Laid-Open No. 2000-337651) blows conditioned air from a dedicated outlet for forming an air barrier toward a window or a wall surface, thereby allowing a perimeter. An air barrier is formed in the zone. In this air conditioner, the risk of air in the vicinity of windows and wall surfaces entering the interior zone is reduced. This maintains the comfort in the room.

  By the way, in the air conditioner disclosed in Patent Document 1, in order to form an air barrier in the perimeter zone, a dedicated outlet for forming the air barrier is provided.

  Then, the subject of this invention is providing the air conditioner which can maintain the comfort in a room, without providing a dedicated outlet.

  The air conditioner according to the first aspect of the present invention includes a casing, a wind direction adjusting unit, and a control unit. A blowout opening is formed in the casing. The wind direction adjusting unit can switch between the first wind direction state and the second wind direction state. In the first wind direction state, air is blown out from the blowout opening into the first wind direction range. In the second wind direction state, air is blown out from the blowout opening into the second wind direction range. The control unit determines whether or not the temperature in the room is stable. Further, in the first state where the temperature is not stable, the control unit controls the switching operation of the wind direction adjusting unit so as to be in the first wind direction state. Further, in the second state, which is a state different from the first state and in which the temperature is stable, the control unit performs a switching operation of the wind direction adjusting unit so that the second wind direction state is obtained. Control. The 2nd wind direction which is the blowing direction of the air which blows in in the 2nd wind direction range is a wind direction which blows off along the wall surface of a room. The second outermost wall side wind direction is a wind direction toward the wall surface rather than the first outermost wall side wind direction. The second outermost wall side wind direction is the wind direction blown out most toward the wall surface side of the room among the second wind directions that are the blowing direction of the air blown into the second wind direction range. The first outermost wall direction wind direction is a wind direction blown out to the most wall surface side among the first wind directions that are the blowing direction of air blown into the first wind direction range. Further, the second room-side wind direction is a wind direction toward the wall surface rather than the first room-side wind direction. The second room side wind direction is a wind direction blown out farthest from the wall surface side among the second wind directions. The first room side wind direction is a wind direction blown out farthest from the wall surface side among the first wind directions.

  In the air conditioner according to the first aspect of the present invention, when the control unit is in the second state, which is a state in which the temperature is stable, the switching of the wind direction adjusting unit is performed so that the state of the wind direction adjusting unit becomes the second wind direction state. Control the behavior. Further, the second outermost wall side wind direction is a wind direction toward the wall surface side rather than the first outermost wall side wind direction, and the second room side wind direction is a wind direction toward the wall surface side rather than the first room side wind direction. For this reason, when the state of a wind direction adjustment part is a 2nd wind direction state, air blows off to the wall surface side of a room rather than the case where it is a 1st wind direction state. Therefore, by changing the blowing direction of the air blown out from the blowing opening, air can be blown out to the wall surface side of the room from the first wind direction range, and an air barrier can be formed in the perimeter zone. For this reason, the possibility that the air in the vicinity of the wall surface may advance into the interior zone can be reduced. In addition, in the first state where the temperature in the room is not stable, the control unit controls the switching operation of the wind direction adjusting unit so that the wind direction adjusting unit is in the first wind direction state. Therefore, when the temperature in the room is not stable, the state of the wind direction adjusting unit cannot be switched from the first wind direction state to the second wind direction state, so that more air blows into the interior zone than the perimeter zone. Will be.

  Thereby, the comfort in the room can be maintained without providing a dedicated blowing opening.

  An air conditioner according to a second aspect of the present invention is the air conditioner of the first aspect, wherein a suction opening is formed in the casing separately from the blowout opening. The suction opening is an opening for taking in air in the room. The suction opening is provided on the wall surface side with respect to the blowing opening. For this reason, compared with the air conditioner in which the blowing opening is provided on the wall surface side of the room from the suction opening, the conditioned air can be efficiently blown into the interior zone.

  Thereby, the comfort in the room can be improved.

  An air conditioner according to a third aspect of the present invention is the air conditioner of the first aspect, wherein the casing is attached to the wall surface of the room. For this reason, in this air conditioner, conditioned air can be blown out from the vicinity of the wall surface of the room to the interior zone.

  An air conditioner according to a fourth aspect of the present invention is the air conditioner according to any one of the first to third aspects, further comprising an acquisition unit. The acquisition unit has a function of acquiring temperature information in the room. In addition, the control unit can put the acquisition unit into a function stop state in which the function is stopped when the air blowing direction from the blowout opening is the second wind direction during the heating operation. .

  For example, in an air conditioner in which the suction opening is provided closer to the wall surface in the room than the blowout opening, immediately after the conditioned air is blown out from the blowout opening in the second wind direction in which air is blown out to the wall surface in the room There is a possibility that a phenomenon (hereinafter referred to as a short circuit phenomenon) is taken in from the suction opening. In addition, when the heating operation is performed and the air blowing direction from the blowing opening is the second wind direction, there is a concern that the casing periphery may be warmed by the conditioned air blown below the blowing opening. For this reason, when the acquisition unit is always functioning, there is a possibility that the temperature information in the room cannot be accurately acquired due to occurrence of a short circuit phenomenon or warming of the casing periphery. However, in this air conditioner, when the heating operation is performed and the blowing direction of the air is the second wind direction, the acquisition unit can be in a function stop state. For this reason, a possibility that inaccurate temperature information may be acquired can be reduced.

  An air conditioner according to a fifth aspect of the present invention is the air conditioner according to the fourth aspect of the present invention, wherein the control unit performs the first predetermined operation when the air blowing direction from the blowing opening is switched from the second wind direction to the first wind direction. Until the time has passed, the acquisition unit can be deactivated.

  There is a possibility that a short circuit phenomenon may occur for a while from when the blowing direction of the conditioned air is switched from the second wind direction to the first wind direction. However, in the air conditioner according to the fourth aspect of the present invention, the acquisition unit can be deactivated until the first predetermined time elapses from when the air blowing direction is switched from the second wind direction to the first wind direction. For this reason, the possibility of acquiring inaccurate temperature information can be further reduced.

  An air conditioner according to a sixth aspect of the present invention is the air conditioner of the fourth aspect or the fifth aspect, wherein the control unit has a determination unit that determines whether or not the temperature in the room is stable. The determination unit determines that the temperature in the room is stable when at least one of the first condition, the second condition, the third condition, and the fourth condition is satisfied. The first condition is a condition that the difference between the temperature in the room calculated using the temperature information in the room and a preset temperature set in advance is within a predetermined range. The second condition is a condition that a second predetermined time or more has elapsed since the start of the operation of the air conditioner including the heating operation. Furthermore, the third condition is a condition that a third predetermined time or more has elapsed since the acquisition unit entered the function stop state. The fourth condition is a condition that a state where the blowing direction of the air from the blowing opening is the first wind direction has passed for a fifth predetermined time or more. For this reason, in this air conditioner, it can be determined whether the temperature in the room is stable.

  An air conditioner according to a seventh aspect of the present invention is the air conditioner according to the sixth aspect of the present invention, further comprising a heat exchanger. The heat exchanger exchanges heat with the air in the room taken in the casing. Further, the control unit adjusts the wind direction from the second wind direction to the first wind direction when at least one of the first switching condition, the second switching condition, the third switching condition, and the fourth switching condition is satisfied. Controls the switching operation of parts. The first switching condition is a condition in which the wind direction adjusting unit has passed for a fourth predetermined time or more after switching from the first wind direction to the second wind direction. The second switching condition is a condition that the temperature of the heat exchanger is equal to or higher than a predetermined temperature. Furthermore, the third switching condition is a condition that the difference between the temperature in the room calculated using the temperature information and the preset set temperature is outside a predetermined range. The fourth switching condition is a condition that the defrosting operation is performed. For this reason, in this air conditioner, the wind direction adjusting unit can be switched from the second wind direction to the first wind direction.

  An air conditioner according to an eighth aspect of the present invention is the air conditioner of the first aspect, wherein the control unit has a determination unit that determines whether or not the temperature in the room is stable. The determination unit determines that the temperature in the room is stable when at least one of the first condition, the second condition, the third condition, and the fourth condition is satisfied. The first condition is a condition that the difference between the temperature in the room calculated using the temperature information in the room and a preset temperature set in advance is within a predetermined range. The second condition is a condition that the sixth predetermined time or more has elapsed since the start of the operation of the air conditioner. Further, the third condition is a condition that the seventh predetermined time or more has passed since the function stop state in which the function of the acquisition unit having the function of acquiring the temperature information in the room is stopped. The fourth condition is a condition that a state where the blowing direction of the air from the blowing opening is the first wind direction has passed for the eighth predetermined time or more. For this reason, in this air conditioner, it can be determined whether the temperature in the room is stable.

  An air conditioner according to a ninth aspect of the present invention is the air conditioner according to the eighth aspect of the present invention, further comprising a heat exchanger. The heat exchanger exchanges heat with the air in the room taken in the casing. Further, the control unit adjusts the wind direction from the second wind direction to the first wind direction when at least one of the first switching condition, the second switching condition, the third switching condition, and the fourth switching condition is satisfied. Controls the switching operation of parts. The first switching condition is a condition in which the wind direction adjusting unit has passed for a ninth predetermined time or more after switching from the first wind direction to the second wind direction. The second switching condition is a condition that the temperature of the heat exchanger is equal to or higher than a predetermined temperature. Furthermore, the third switching condition is a condition that the difference between the temperature in the room calculated using the temperature information and the preset set temperature is outside a predetermined range. The fourth switching condition is a condition that the defrosting operation is performed. For this reason, in this air conditioner, the wind direction adjusting unit can be switched from the second wind direction to the first wind direction.

  An air conditioner according to a tenth aspect of the present invention is the air conditioner according to any of the first to ninth aspects of the present invention, further comprising a fan capable of generating an air flow blown from the blowout opening. The fan is accommodated in the casing. Further, the control unit controls the rotation of the fan so that the fan has a predetermined air volume at the time of the second wind direction. For this reason, for example, when the predetermined air volume is set to the minimum air volume required for forming the air barrier, the energy saving effect can be enhanced as compared with the case where the fan is rotated with an air volume more than necessary.

  An air conditioner according to an eleventh aspect of the present invention is the air conditioner according to the tenth aspect of the present invention, wherein the control unit is configured so that the fan has a predetermined air volume by changing the rotation speed of the fan in a plurality of times. Control the rotation of For this reason, for example, compared with the case where the number of rotations of the fan is not changed in a plurality of times, an abrupt change in fan rotation sound can be suppressed.

  As a result, user discomfort due to a sudden change in the rotational sound of the fan can be suppressed.

  An air conditioner according to a twelfth aspect of the invention is the air conditioner of the tenth aspect of the invention or the eleventh aspect of the invention, wherein the control unit controls the wind direction adjustment operation from the first wind direction to the second wind direction. Before controlling the switching operation of the adjusting unit, the rotation of the fan is controlled so that the fan has a predetermined air volume. For example, when the wind direction is switched from the first wind direction to the second wind direction, or when the wind direction is switched to the second wind direction, the wind direction adjustment unit blows out the wind direction when the wind direction is the first wind direction. When the opening area of the opening is small, the surging noise may increase due to the fan air volume becoming a predetermined air volume after the air direction is switched to the second air direction. For this reason, after controlling the rotation of the fan so that the fan has a predetermined air volume, the surging noise can be reduced by switching the wind direction adjusting unit so that the wind direction becomes the second wind direction.

  In the air conditioner according to the first aspect of the present invention, the comfort in the room can be maintained without providing a dedicated blowing opening.

  In the air conditioner according to the second aspect of the invention, the comfort in the room can be improved.

  In the air conditioner according to the third aspect of the invention, conditioned air can be blown out from the vicinity of the wall surface in the room to the interior zone.

  In the air conditioner according to the fourth aspect of the invention, it is possible to suppress the acquisition of inaccurate temperature information.

  In the air conditioner pertaining to the fifth aspect of the invention, it is possible to suppress inaccurate acquisition of temperature information.

  In the air conditioner pertaining to the sixth aspect of the invention, it can be determined whether or not the temperature in the room is stable.

  In the air conditioner according to the seventh aspect of the present invention, the wind direction adjusting unit can be switched from the second wind direction to the first wind direction.

  In the air conditioner according to the eighth aspect of the invention, it can be determined whether or not the temperature in the room is stable.

  In the air conditioner according to the ninth aspect of the present invention, the wind direction adjusting unit can be switched from the second wind direction to the first wind direction.

  In the air conditioner according to the tenth aspect, the energy saving effect can be enhanced.

  In the air conditioner according to the eleventh aspect of the invention, the user's discomfort can be suppressed.

  In the air conditioner according to the twelfth aspect, surging sound can be reduced.

1 is a schematic refrigerant circuit diagram of an air conditioner according to an embodiment of the present invention. External perspective view of an indoor unit (ceiling is omitted). It is a longitudinal cross-sectional view of an indoor unit, Comprising: The figure which shows the operation stop state of an air conditioner (equivalent to the III-III cross section of FIG. 2). The schematic plan view which looked at the indoor unit from the decorative panel side. It is a longitudinal cross-sectional view of an indoor unit, Comprising: The figure which shows the driving | running state of an air conditioner (equivalent to the VV cross section of FIG. 2). The figure which shows the (a) closed state of a flap, (b) swing state, and (c) perimeter angle state. The enlarged view of the 2nd opening of a decorative panel. The control block diagram of the air conditioner which concerns on embodiment of this invention. The figure which is the determination conditions of a determination part, Comprising: The figure which shows the predetermined range at the time of heating operation. The figure which is the determination conditions of a determination part, Comprising: The figure which shows the predetermined range at the time of cooling operation. The flowchart which shows the state of the flap after the operation start of the air conditioner which concerns on embodiment of this invention. The flowchart which shows the flow of the determination by the determination part in the temperature stability conditions of an interior zone. The flowchart which shows the flow of judgment by the control part in switching conditions. In a modification (B), the schematic perspective view of an indoor unit when the state of a flap is a closed state. The side view of the indoor unit which shows an example when the state of a flap is a swing state in a modification (B). The longitudinal cross-sectional view of the indoor unit which shows an example when the state of a flap is a swing state in a modification (B). The side view of the indoor unit which shows the case where the state of a flap is a perimeter angle state in a modification (B). The longitudinal cross-sectional view of an indoor unit which shows the case where the state of a flap is a perimeter angle state in a modification (B). In the modification (E), the schematic which shows the wind direction range when a flap state is a swing state, and the wind direction range when a flap state is a perimeter angle state.

<Outline of air conditioner configuration>
An air conditioner 100 according to an embodiment of the present invention includes a ceiling-embedded indoor unit 1 that is installed in a state of being embedded in a ceiling, and an outdoor unit 3 that is installed outdoors, and performs a cooling operation. Heating operation, defrosting operation, and the like can be performed. As shown in FIG. 1, the indoor unit 1 houses an indoor heat exchanger 4, and the outdoor unit 3 houses an outdoor heat exchanger 6, and each heat exchanger 4, 6 is connected by a refrigerant pipe. The refrigerant circuit is constituted by being connected. The refrigerant circuit mainly includes an indoor heat exchanger 4, an accumulator 14, a compressor 9, a four-way switching valve 8, an outdoor heat exchanger 6, and an electric expansion valve 12.

  In the indoor unit 1, in addition to the indoor heat exchanger 4, an indoor fan 5 and the like are accommodated. The detailed configuration of the indoor unit 1 will be described later.

  The outdoor unit 3 includes a four-way switching valve 8 connected to the discharge side of the compressor 9, an accumulator 14 connected to the suction side of the compressor 9, and an outdoor heat exchanger connected to the four-way switching valve 8. 6 and an electric expansion valve 12 connected to the outdoor heat exchanger 6 are accommodated. The electric expansion valve 12 is connected to the liquid communication pipe via the liquid closing valve 10, and is connected to one end of the indoor heat exchanger 4 via this liquid communication pipe. The four-way switching valve 8 is connected to a gas communication pipe via a gas closing valve 11 and is connected to the other end of the indoor heat exchanger 4 via this gas communication pipe. Further, the outdoor unit 3 accommodates a propeller fan 7 for discharging the air after heat exchange in the outdoor heat exchanger 6 to the outside. The propeller fan 7 is rotationally driven by an outdoor fan motor.

<Configuration of indoor unit>
As shown in FIGS. 2 and 3, the indoor unit 1 includes an indoor unit body 2 and a decorative panel 20. The indoor unit body 2 is arranged in the ceiling back space so as to face the opening O of the ceiling U. The decorative panel 20 is attached to the indoor unit main body 2 so as to face a suction side channel 19a and a blowout side channel 19b of the indoor unit main body 2 to be described later with the opening O interposed therebetween. Hereinafter, the indoor unit body 2 and the decorative panel 20 will be described.

(1) Indoor unit main body The indoor unit main body 2 includes an indoor unit casing 13, an indoor fan 5, an indoor heat exchanger 4, and the like, as shown in FIGS. The indoor unit casing 13 has a substantially rectangular parallelepiped shape, and has a box shape with an open bottom surface. The indoor unit casing 13 accommodates the indoor fan 5, the indoor heat exchanger 4, and the like.

  The indoor fan 5 is a cross-flow fan configured in a long and thin cylindrical shape, and is housed inside the indoor unit casing 13 such that the rotation shaft extends along the longitudinal direction of the indoor unit casing 13. The indoor fan 5 is driven to rotate by an indoor fan motor 5a (see FIG. 8), thereby generating an air flow in a direction intersecting with the rotation shaft. Further, the indoor fan 5 sucks air in the room into the indoor unit main body 2 and blows out air after heat exchange with the indoor heat exchanger 4 into the room.

  The indoor heat exchanger 4 includes a heat transfer tube that is bent back and forth at both ends in the longitudinal direction and a plurality of fins that are inserted through the heat transfer tube, and performs heat exchange between the air that contacts the heat transfer tube. The indoor heat exchanger 4 is disposed in the indoor unit casing 13 so as to extend obliquely upward as it moves away from the indoor fan 5 from a position below the indoor fan 5.

  As described above, an air flow path is formed in the indoor unit casing 13 until the sucked air in the room exchanges heat with the indoor heat exchanger 4 and is blown out into the room again. ing. In addition, the air flow path is again connected to the suction side flow path 19a which is a flow path portion from the room where the air sucked from the room reaches the indoor heat exchanger 4 and the indoor heat exchanger 4 via the indoor fan 5. It is comprised from the blowing side flow path 19b which is a flow-path part until it blows in the room.

(2) Decorative Panel The decorative panel 20 is a substantially rectangular member that is larger than the top surface of the indoor unit casing 13 in plan view, as shown in FIGS. 2, 3, and 4. The decorative panel 20 is provided with a first opening 23 (corresponding to a suction opening) and a second opening 30. In the present embodiment, the first opening 23 is provided closer to the wall surface W in the room than the second opening 30. The first opening 23 is a substantially rectangular opening disposed at a position that coincides with the suction side flow path 19 a of the indoor unit body 2. Further, the first opening 23 is provided so as to communicate with the interior of the indoor unit casing 13 through the suction side flow path 19a. The second opening 30 is a substantially rectangular opening disposed at a position that coincides with the blow-out side flow path 19b of the indoor unit body 2. Further, the second opening 30 is provided so as to communicate with the interior of the indoor unit casing 13 through the blowout side channel 19b.

  Further, the first opening 23 is provided with a panel 21 that can cover 90% of the first opening 23. The panel 21 is a plate-like member having a shape that is long in the longitudinal direction of the indoor unit body 2, and includes a rotation shaft that is parallel to the longitudinal direction of the indoor unit body 2 and a panel drive motor 21 a (see FIG. 8). ing. Further, as shown in FIGS. 3 and 5, the panel 21 can be shielded or opened by being rotated about the rotation axis by the panel drive motor 21a. The rotating shaft is provided in the vicinity of the edge of the first opening 23 located on the center side of the decorative panel 20 in the decorative panel 20. In the present embodiment, the panel 21 is in a state in which the first opening 23 is opened when flaps 22a and 22b described later are in a swing state or a perimeter angle state. Moreover, the panel 21 is the state which has shielded the 1st opening 23, when the state of flap 22a, 22b is the closed state mentioned later. Hereinafter, a state in which the panel 21 opens the first opening 23 is referred to as an open state, and a state in which the first opening 23 is shielded is referred to as a closed state.

  The second opening 30 includes blowout openings 24 a and 24 b and a gap opening 25. The blowing openings 24a and 24b and the gap opening 25 are substantially rectangular openings provided continuously, and the lengths of the long sides of the blowing openings 24a and 24b and the gap opening 25 are the same. The length of the short side of the gap opening 25 is 10 mm in a state in which flaps 22a and 22b described later close the blowing openings 24a and 24b. In the present embodiment, the blowing openings 24a and 24b and the gap opening 25 are provided continuously, but the blowing openings 24a and 24b and the gap opening 25 may be provided independently.

  Further, flaps 22a and 22b capable of covering 90% of the blowing openings 24a and 24b are provided in the vicinity of the blowing openings 24a and 24b. The flaps 22a and 22b are plate-like members having a shape that is long in the longitudinal direction of the indoor unit body 2. The flaps 22a and 22b include rotary shafts 28a and 28b that are parallel to the longitudinal direction of the indoor unit body 2 and a flap drive motor 22c. (See FIGS. 7 and 8). Further, as shown in FIGS. 3, 5, and 7, the flaps 22 a and 22 b are rotated around the rotary shafts 28 a and 28 b by the flap drive motor 22 c to shield or open the blowing openings 24 a and 24 b. . Further, by adjusting the inclination angle of the flaps 22a and 22b with respect to the horizontal plane, the flaps 22a and 22b can change the air direction of the air blown into the room from the blowing openings 24a and 24b. The inside of the room where the air is blown out from the air conditioner 100 includes an interior zone IZ that is a living space of the person to be air-conditioned and a perimeter zone PZ that is a space near the window and the wall surface W than the interior zone IZ. It is an indoor space. In the present embodiment, the flaps 22a and 22b can be in three states (a closed state, a swing state, and a perimeter angle state) according to the operation of the air conditioner 100 or the like. Next, the states of the flaps 22a and 22b will be described with reference to FIG. In this embodiment, since the inclination angle of the flap 22a with respect to the horizontal plane and the inclination angle of the flap 22b with respect to the horizontal plane in each state of the flaps 22a and 22b are equal to each other, the flap 22b will be described as an example here. Description is omitted.

  First, in the closed state, as shown in FIG. 6A, the flap 22b is in a state in which the blowout opening 24b is substantially closed, that is, the gap between the blowout opening 24b and the flap 22b is the smallest. In this embodiment, the inclination angle α of the flap 22b with respect to the horizontal plane (omitted in FIG. 6A) is 0 degree.

  In the swing state, as shown in FIG. 6B, the flap 22b is within an angle range in which the blowing direction of the air blown from the blowing opening 24b faces the interior zone IZ (for example, the inclination angle α of the flap 22b with respect to the horizontal plane However, both the cooling operation and the heating operation are within a range of 38 to 70 degrees), and the rotation shafts 28a and 28b are varied. For this reason, in the swing state, air is blown out from the blowing openings 24a and 24b to the interior zone IZ within a predetermined wind direction range. In FIG. 6B, an arrow A1 shows an example of the wind direction (corresponding to the first wind direction) of the air blown out from the blowing openings 24a and 24b in the swing state.

  In the perimeter angle state, as shown in FIG. 6C, the flap 22b has an angle at which the blowing direction of the air blown from the blowing opening 24b faces the perimeter zone PZ (for example, the inclination angle α of the flap 22b with respect to the horizontal plane is 100). Degree). For this reason, in the perimeter angle state, more air is blown out from the blowing openings 24a and 24b to the perimeter zone PZ than to the interior zone IZ. In FIG. 6C, the air direction (corresponding to the second air direction) of the air blown out from the blowing openings 24a and 24b in the perimeter angle state is indicated by an arrow A2.

  Further, in the present embodiment, as shown in FIG. 7, the length of the short side of the gap opening 25 changes as the flaps 22a and 22b rotate. For example, the length L2 of the short side of the gap opening 25 when the blowing openings 24a and 24b are opened by the flaps 22a and 22b is the case where the blowing openings 24a and 24b are shielded by the flaps 22a and 22b. It becomes shorter than the length L1 of the short side of the gap opening 25. The rotating shafts 28 a and 28 b are provided in the vicinity of the edges of the blowing openings 24 a and 24 b located on the center side of the decorative panel 20 in the decorative panel 20.

  In the indoor unit 1 having the above configuration, for example, when the indoor fans 5 are rotated when the flaps 22a and 22b are in the swing state, the air in the room is first as shown in FIG. The air is sucked from the opening 23 and sent to the indoor heat exchanger 4 through the filter 40 and the suction-side flow path 19a. When the air sent to the indoor heat exchanger 4 passes through the indoor heat exchanger 4, the temperature is adjusted to become conditioned air. The conditioned air that has passed through the indoor heat exchanger 4 is supplied to the interior zone IZ in the room mainly from the blowout openings 24a and 24b of the second opening 30 of the decorative panel 20 through the blowout side channel 19b.

<Control unit>
As shown in FIG. 8, the control unit 60 includes various devices such as an indoor fan motor 5 a, an indoor heat exchanger 4, and an indoor heat exchanger thermistor housed in the indoor unit 1, and a compressor housed in the outdoor unit 3. 9, connected to various devices such as the four-way switching valve 8, the electric expansion valve 12, the outdoor heat exchanger 6 and the outdoor heat exchanger thermistor, and based on the operation command from the air conditioning subject via the remote controller 50 or the like Thus, operation control of various devices is performed according to each operation such as cooling operation and heating operation. The remote controller 50 is provided with a “powerful operation setting” button. When the “powerful operation setting” button is pressed by a person to be air-conditioned, the control unit 60 sets the cooling operation or heating operation to the powerful operation mode. Switch. The powerful operation mode here refers to temporarily improving the air conditioning processing capability of the air conditioner 100 by temporarily increasing the rotational speed of the indoor fan 5, the operating frequency of the compressor 9, and the like. It is a mode that can be.

  The control unit 60 is connected to the panel drive motor 21a and the flap drive motor 22c, and switches the state of the panel 21 and the flaps 22a and 22b by controlling the rotation of the panel 21 and the flaps 22a and 22b. Can do. Further, when the operation of the air conditioner 100 is stopped, the control unit 60 switches both the panel 21 and the flaps 22a and 22b to the closed state. Further, when the air conditioner 100 is in operation, the panel 21 is opened, and the states of the flaps 22a and 22b are switched to the swing state or the perimeter angle state. Furthermore, when there is an angle setting command from the air conditioning subject via the remote controller 50 or the like during the operation of the air conditioner 100, the control unit 60, based on the angle setting command, the panel 21 and the flap 22a. , 22b can be controlled to adjust the inclination angle of the panel 21 and the flaps 22a, 22b with respect to the horizontal plane.

  The control unit 60 includes an acquisition unit 61 having a function of acquiring temperature information of the interior zone IZ in the room detected by the room temperature thermistor 33. The control unit 60 stops the function of the acquisition unit 61 when the heating operation is being performed and the flaps 22a and 22b are in the perimeter angle state. In addition, the control unit 60 determines whether the flaps 22a and 22b are switched from the perimeter angle state to the swing state until a predetermined time (corresponding to the first predetermined time, for example, 150 seconds) elapses. Stop function. In the present embodiment, the room temperature thermistor 33 is disposed in the vicinity of the first opening 23 inside the indoor unit 1.

  Further, the control unit 60 functions as the determination unit 62. The determination unit 62 determines whether or not the following conditions are satisfied.

(1) The difference between the temperature of the interior zone IZ in the room and the set temperature is within a predetermined range. (2) A predetermined time (corresponding to the second predetermined time and the sixth predetermined time) has passed since the start of operation. 3) A predetermined time or more has elapsed since the start of thermo-on (4) Not in defrosting operation (5) Not in powerful operation (6) State in which acquisition unit 61 is functioning from a stopped state (7) More than a predetermined time has passed since the operation content was changed from the defrosting operation to the heating operation. What is the determination as to whether the above condition is satisfied? , (1), the determination unit 62 is set in advance by the temperature of the interior zone IZ in the room calculated by using the temperature information acquired by the acquisition unit 61 and the person to be air-conditioned in advance. Difference from set temperature Is calculated. Specifically, the determination unit 62 calculates a value obtained by subtracting the temperature of the interior zone IZ from the set temperature during the heating operation, and calculates a value obtained by subtracting the set temperature from the temperature of the interior zone IZ during the cooling operation. And the determination part 62 determines whether the value is in the range of A to E shown in FIG. 9 at the time of heating operation, and whether it is in the range of A to E shown in FIG. 10 at the time of cooling operation. Determine whether. 9 and 10, “when rising” means when the temperature in the interior zone IZ is rising, and “when falling” means when the temperature in the interior zone IZ is falling. For this reason, when the heating operation starts, the operation starts from “up”, and when the cooling operation starts, the operation starts from “down”. If the difference is within the above range, the determination unit 62 determines that the condition (1) is satisfied. For example, at the start of the heating operation, if the value obtained by subtracting the temperature of the interior zone IZ from the set temperature is within the range from A to E shown in FIG. 9, the determination unit 62 satisfies the condition (1). judge.

  Regarding (2), in the air conditioner 100, when a predetermined time (for example, 5 minutes) or more has elapsed since the start of each operation such as the cooling operation and the heating operation, the determination unit 62 determines (2 ) Is satisfied.

  As for (3), when a predetermined time (for example, 5 minutes) or more has elapsed since the start of thermo-on in the air conditioner 100, the determination unit 62 determines that the condition of (3) is satisfied. To do.

  Regarding (4), in each operation of the air conditioner 100, when an operation other than the defrosting operation is performed, the determination unit 62 determines that the condition (4) is satisfied. The defrosting operation is an operation that is performed during the heating operation, and is an operation that is automatically performed to melt the frost on the outdoor heat exchanger.

  As for (5), when the powerful operation mode is not set by the operation instruction of the air conditioning subject or the like, the determination unit 62 determines that the condition of (5) is satisfied.

  Regarding (6), when a predetermined time (for example, 150 seconds) has elapsed since the acquisition unit 61 has changed from the function stop state to the function state, the determination unit 62 satisfies the condition (6). It is determined that In other words, when a predetermined time (corresponding to the third predetermined time and the seventh predetermined time) has elapsed since the acquisition unit 61 is in a function stop state, the determination unit determines that the condition (6) is satisfied. judge.

  Regarding (7), when a predetermined time (for example, 5 minutes) or more has elapsed since the operation content was changed from the defrosting operation to the heating operation, the determination unit 62 satisfies the condition (7). It is determined that

  Based on the determination by the determination unit 62, the control unit 60 determines whether or not the temperature of the interior zone IZ in the room is stable. In the determination first performed by the control unit 60 from the start of the operation of the air conditioner 100, the control unit 60 determines that the conditions (1) to (5) are satisfied by the determination unit 62. It is determined that the temperature of the interior zone IZ in the room is stable. When the controller 60 determines that the temperature of the interior zone IZ in the room is stable at least once from the start of the operation of the air conditioner 100, the controller 60 determines that the above condition is satisfied by the determiner 62. When it is determined that the conditions (1) to (6) are satisfied, it is determined that the temperature of the interior zone IZ in the room is stable. The condition (7) is a condition that is included only when the defrosting operation is performed. For example, when the defrosting operation is performed during the heating operation, the control unit 60 determines that the interior zone IZ in the room is determined when the determination unit 62 determines that all the above conditions are satisfied. It is judged that the temperature of is stable.

  In the present embodiment, the determination unit 62 satisfies the above conditions (1) to (5), (1) to (6), or (1) to (7). When it is determined that the temperature of the interior zone IZ in the room is stable, the control unit 60 determines that the temperature is stable. However, the present invention is not limited to this. For example, when at least one of the conditions (1) to (7) is satisfied, the temperature of the interior zone IZ in the room is stabilized by the control unit. It may be determined that

  In the present embodiment, the control unit 60 stops the function of the acquisition unit 61 until a predetermined time elapses after the flaps 22a and 22b are switched from the perimeter angle state to the swing state. However, instead of this, when the flap state is switched from the perimeter angle state to the swing state during the heating operation, the control unit acquires until a predetermined time elapses after the flap state is switched. The function of the part may be stopped. That is, the control unit may stop the function of the acquisition unit only during the heating operation in which a short circuit phenomenon is likely to occur, and may not stop the function of the acquisition unit during the cooling operation. In this case, among the above conditions determined by the determination unit, the condition (6) is a condition determined only during the heating operation.

  Furthermore, when the controller 60 determines that the temperature of the interior zone IZ in the room is stable, the controller 60 switches the state of the flaps 22a and 22b from the swing state to the perimeter angle state. In addition, when the control unit 60 determines that the temperature of the interior zone IZ in the room is not stable, the control unit 60 maintains the states of the flaps 22a and 22b in the swing state.

  Further, when it is determined that at least one of the following switching conditions is satisfied, the control unit 60 switches the state of the flaps 22a and 22b from the perimeter angle state to the swing state.

(1) A predetermined time (corresponding to the fourth predetermined time and the ninth predetermined time) has elapsed since the state of the flaps 22a, 22b has changed to the perimeter angle state. (2) During the heating operation, the indoor heat exchanger 4 The temperature is equal to or higher than the predetermined temperature. (3) The defrosting operation is performed. (4) The difference between the temperature of the interior zone IZ in the room and the set temperature is outside the predetermined range. (5) The powerful operation is performed. For example, in the switching condition of (1), when a predetermined time (for example, 2 minutes) or more has elapsed since the state of the flaps 22a and 22b has changed to the perimeter angle state, the control unit 60 determines that (1) It is determined that the switching condition is satisfied.

  In the switching condition (2), the temperature of the indoor heat exchanger 4 is equal to or higher than a predetermined temperature using temperature information acquired from a heat exchanger thermistor that detects the temperature of the refrigerant flowing in the indoor heat exchanger 4 (for example, , 54 degrees), the control unit 60 determines that the switching condition (2) is satisfied. In addition, the switching condition of (2) is a switching condition only at the time of heating operation.

  In the switching condition (3), when the defrosting operation is performed, the control unit 60 determines that the switching condition (3) is satisfied.

  In the switching condition of (4), when it is determined that the value obtained by subtracting the temperature of the interior zone IZ from the set temperature calculated by the determination unit 62 is within the range of F to L shown in FIG. The control unit 60 determines that the condition (4) is satisfied. In the cooling operation, when it is determined that the value obtained by subtracting the set temperature from the temperature of the interior zone IZ calculated by the determination unit 62 is within the range of F to L shown in FIG. It is determined that the condition of 4) is satisfied.

  In the switching condition of (5), the control unit determines that the switching condition of (5) is satisfied when the powerful operation mode is set by the operation instruction of the air conditioning subject or the like.

<Flap state switching operation>
Next, the flap state switching operation by the control unit 60 during the cooling operation or the heating operation will be described with reference to FIGS. 11, 12, and 13. Here, the cooling operation or the heating operation is started, and the control unit 60 switches the state of the panel 21 from the closed state to the open state, and the states of the flaps 22a and 22b from the closed state to the swing state. .

  The determination unit 62 determines the temperature stability condition of the interior zone IZ (step S1). At this time, the control unit 60 first determines whether or not the state of the flaps 22a and 22b has been switched to the perimeter angle state from the start of operation of the air conditioner 100 to the present time (step S2). If the control unit 60 determines that the state of the flaps 22a and 22b has not been switched to the perimeter angle state from the start of operation of the air conditioner 100 to the present time, then the controller 60 defrosts from the start of operation of the air conditioner 100. It is determined whether or not driving has been performed (step S3). Then, the control unit 60 determines that the state of the flaps 22a and 22b has not been switched to the perimeter angle state from the start of operation of the air conditioner 100 to the present time, and the defrosting operation is started from the start of operation of the air conditioner 100. When it is determined that it has not been performed, the determination unit 62 determines whether or not the conditions (1) to (5) are satisfied (steps S4 to S8). If the determination unit 62 determines that all the conditions (1) to (5) are satisfied, the control unit 60 determines that the temperature of the interior zone IZ in the room is stable. Then, the states of the flaps 22a and 22b are switched from the swing state to the perimeter angle state (steps S11 and S12). Further, when the determination unit 62 determines that at least one of the conditions (1) to (5) is not satisfied, the control unit 60 indicates that the temperature of the interior zone IZ in the room is stable. The flaps 22a and 22b are maintained in the swing state. Then, after the predetermined time has elapsed, the determination unit 62 again determines whether or not the conditions (1) to (5) are satisfied. The determination of whether or not the conditions (1) to (5) are satisfied is repeated until all the conditions (1) to (5) are satisfied.

  Furthermore, when the control unit 60 determines in step S2 that the state of the flaps 22a and 22b has been switched to the perimeter angle state at least once since the start of the operation of the air conditioner 100, the determination unit 62 satisfies the condition (6). It is determined whether it is satisfied (step S9). When the determination unit 62 determines that the condition (6) is satisfied, the control unit 60 determines whether or not the defrosting operation has been performed from the start of the operation of the air conditioner 100 (step S3). ). At this time, when the control unit 60 determines that the defrosting operation has not been performed since the start of the operation of the air conditioner 100, it is determined whether or not the conditions (1) to (5) are satisfied by the determination unit 62. Determination is made (steps S4 to S8). If the determination unit 62 determines that all the conditions (1) to (5) are satisfied, the control unit 60 determines that the temperature of the interior zone IZ in the room is stable. Then, the states of the flaps 22a and 22b are switched from the swing state to the perimeter angle state (steps S11 and S12). Further, when the determination unit 62 determines that at least one of the conditions (1) to (5) is not satisfied, the control unit 60 indicates that the temperature of the interior zone IZ in the room is stable. The flaps 22a and 22b are maintained in the swing state. Furthermore, when the determination unit 62 determines that the condition (6) is not satisfied in step S9, the control unit 60 determines that the temperature of the interior zone IZ in the room is not stable, and the flap 22a. , 22b is maintained in the swing state. Then, after the predetermined time has elapsed, the determination unit 62 again determines whether or not the condition (6) is satisfied. The determination of whether or not the condition (6) is satisfied is repeated until the condition (6) is satisfied.

  In step S3, when the control unit 60 determines that the defrosting operation has been performed from the start of the operation of the air conditioner 100, the determination unit 62 determines whether or not the condition (7) is satisfied. (Step S10). When the determination unit 62 determines that the condition (7) is satisfied, the determination unit 62 further determines whether the conditions (1) to (5) are satisfied (step S4). -Step S8). At this time, if the determination unit 62 determines that all the conditions (1) to (5) are satisfied, the control unit 60 determines that the temperature of the interior zone IZ in the room is stable. Judgment is made, and the states of the flaps 22a and 22b are switched from the swing state to the perimeter angle state (steps S11 and S12). Further, when the determination unit 62 determines that at least one of the conditions (1) to (5) is not satisfied, the control unit 60 indicates that the temperature of the interior zone IZ in the room is stable. The flaps 22a and 22b are maintained in the swing state. Furthermore, when it is determined in step 10 that the condition (7) is not satisfied by the determination unit 62, the control unit 60 determines that the temperature of the interior zone IZ in the room is not stable, and the flap 22a. , 22b is maintained in the swing state. Then, after the predetermined time has elapsed, the determination unit 62 again determines whether or not the condition (7) is satisfied. The determination of whether or not the condition (7) is satisfied is repeated until the condition (7) is satisfied.

  When the state of the flaps 22a and 22b is switched to the perimeter angle state, the control unit 60 next determines whether or not a switching condition that is a condition for switching the state of the flaps 22a and 22b from the perimeter angle state to the swing state is satisfied. Is determined (step S13). When it is determined that at least one of the switching conditions (1) to (5) is satisfied, the control unit 60 switches the state of the flaps 22a and 22b from the perimeter angle state to the swing state (step S14 to step S19). In step S13, the control unit 60 sets the flaps 22a and 22b to the perimeter angle state until it is determined that at least one of the switching conditions (1) to (5) is satisfied. Maintain with.

  Further, when the state of the flaps 22a and 22b is switched from the perimeter angle state to the swing state, the control unit 60 repeats the above steps S1 to S19.

  In this manner, in the air conditioner 100, the interior zones of the flaps 22a and 22b are switched from the swing state to the perimeter angle state and from the perimeter angle state to the swing state during the cooling operation or the heating operation. Conditioned air can be supplied to the IZ and the perimeter zone PZ.

  In addition, when there is an instruction to stop the operation of the air conditioner 100 from the air conditioning subject, the control unit 60 controls the operation of the air conditioner 100 by controlling various devices in the indoor unit 1 and the outdoor unit 3. The panel 21 and the flaps 22a and 22b are both switched to the closed state.

<Features>
(1)
Some recent air conditioners have a function of forming an air barrier in the vicinity of a window or a wall surface in order to prevent air affected by outdoor temperature from entering the interior zone. For example, in the air conditioner disclosed in Japanese Patent Laid-Open No. 2000-337651, an air barrier is formed in the perimeter zone by blowing conditioned air from a dedicated outlet for forming the air barrier toward the window or near the wall surface. is doing. In this air conditioner, the risk of air in the vicinity of windows and wall surfaces entering the interior zone is reduced. This maintains the comfort in the room. By the way, in this air conditioner, in order to form an air barrier in the perimeter zone, a dedicated outlet for forming the air barrier is provided.

  Therefore, in the above embodiment, when the control unit 60 determines that the temperature of the interior zone IZ in the room is stable based on the determination of the determination unit 62, the state of the flaps 22a and 22b is changed from the swing state to the perimeter. Switch to the angle state. Further, when it is determined that at least one of the switching conditions is satisfied, the control unit 60 switches the state of the flaps 22a and 22b from the perimeter angle state to the swing state. Therefore, by changing the blowing direction of the air blown from the blowing openings 24a and 24b, the air is blown at an angle that faces the perimeter zone PZ rather than within the wind direction range in the swing state, and the air is blown to the wall, that is, at the perimeter zone PZ. Thus, an air barrier can be formed in the perimeter zone PZ. Therefore, it is possible to reduce the risk that air in the vicinity of the wall surface W will advance into the interior zone.

  As a result, when heating operation is performed in winter, cooling radiation and cold air intrusion from the window and wall surface can be suppressed, and when cooling operation is performed in summer, it is caused by solar radiation from the window and wall surface. The influence can be suppressed.

  Further, when the control unit 60 determines that the temperature of the interior zone IZ in the room is not stable based on the determination of the determination unit 62, the state of the flaps 22a and 22b is maintained in the swing state. For this reason, when the temperature of the interior zone IZ in the room is not stable, the conditioned air is blown out to the interior zone IZ rather than the perimeter zone PZ.

  As a result, the comfort in the room can be maintained without providing a dedicated blowing opening.

(2)
In the above embodiment, the control unit 60 includes the acquisition unit 61 having a function of acquiring temperature information of the interior zone IZ in the room detected by the room temperature thermistor 33. The control unit 60 stops the function of the acquisition unit 61 when the heating operation is being performed and the flaps 22a and 22b are in the perimeter angle state. Moreover, the control part 60 stops the function of the acquisition part 61 until predetermined time (for example, 150 seconds) passes since the state of flap 22a, 22b switched from the perimeter angle state to the swing state. Furthermore, the room temperature thermistor 33 is disposed in the vicinity of the first opening 23 inside the indoor unit 1. For this reason, even if a short circuit phenomenon occurs when the state of the flaps 22a and 22b is in the perimeter angle state or immediately after switching from the perimeter angle state to the swing state, there is a risk of obtaining inaccurate temperature information. It can be reduced.

  When the flaps 22a and 22b are in the perimeter angle state during the heating operation, warm air is mainly blown out to the lower side of the indoor unit body 2 as conditioned air. As described above, the warm air is blown out to the lower side of the indoor unit body 2 or the warm air blown out from the blowout openings 24a and 24b is accumulated in the upper part of the room, thereby warming the periphery of the indoor unit 1. There is a possibility that. At this time, if the room temperature thermistor is disposed in the vicinity of the indoor unit, inaccurate temperature information may be obtained.

  So, in the said embodiment, the control part 60 stops the function of the acquisition part 61 when it is at the time of heating operation, and the state of flaps 22a and 22b is a perimeter angle state. For this reason, the possibility of acquiring inaccurate temperature information can be reduced.

(3)
In the above embodiment, the first opening 23 provided so as to communicate with the interior of the indoor unit casing 13 through the suction side flow path 19a is disposed at a position that coincides with the blowout side flow path 19b of the indoor unit body 2. The second opening 30 is provided on the wall surface W side in the room. For this reason, compared with the case where the 2nd opening is provided in the wall side in the room rather than the 1st opening, it can make it easy to form an air barrier in perimeter zone PZ.

<Modification>
(A)
In the said embodiment, the air volume in case the state of flaps 22a and 22b is a perimeter angle state is an air volume equal to the air volume at the time of the operation of the air conditioner 100 currently implemented. However, the rotational speed of the indoor fan can be reduced by setting the minimum air volume that can form an air barrier in the perimeter zone PZ (for example, the air volume equal to the air volume when the thermo is off) to the air volume in the perimeter angle state. .

  Thereby, energy saving can be realized.

  In addition, when the air volume when the flap is in the perimeter angle state is set to a predetermined air volume, the control unit changes the rotation speed of the indoor fan in a plurality of times to change the air volume of the indoor fan to the predetermined air volume. Thus, the rotation of the indoor fan may be controlled. Specifically, when the air volume of the indoor fan when the flap state is the swing state is changed to a predetermined air volume, the control unit changes the rotation speed of the indoor fan by a predetermined speed every predetermined time. The rotation of the indoor fan is controlled so that a predetermined air volume is obtained. In this way, by gradually changing the rotation speed of the indoor fan, it is possible to reduce the possibility that the rotation sound of the indoor fan changes suddenly.

  As a result, it is possible to reduce the possibility of giving the user an unpleasant feeling.

  Furthermore, when the flap state is switching from the swing state to the perimeter angle state, or when the flap state is switched to the perimeter angle state, compared to the case where the flap state is the swing state. In the case where the area of the blowout opening is reduced, surging noise may occur. Therefore, the control unit may control the rotation of the indoor fan so that the indoor fan has a predetermined air volume before switching the flap state to the perimeter angle state.

  Thus, after the indoor fan reaches a predetermined air volume, the surging sound can be reduced by switching the flap state to the perimeter angle state.

  Further, in the air conditioner in which the panel covers 100% of the first opening and the flap covers 100% of the blowout opening, surging is likely to occur compared to the air conditioner 100 of the above embodiment. In the case of an air conditioner having a structure in which surging is likely to occur, noise such as vibration noise can be prevented by providing an upper limit for the air volume blown by the indoor fan.

(B)
In the said embodiment, the air conditioner 100 is provided with the ceiling-embedded indoor unit 1 installed in the state embedded in the ceiling.

  Instead, the air conditioner may include a wall-mounted indoor unit 101 installed on the wall surface W1 in the room. Hereinafter, the wall-mounted indoor unit 101 installed on the wall surface W1 in the room will be described.

  As shown in FIGS. 14, 15, 16, 17, and 18, the indoor unit 101 has an indoor unit casing 113. The indoor unit casing 113 has a substantially rectangular parallelepiped shape, and its back surface is attached to the wall surface W1 of the room. In the indoor unit casing 113, an indoor heat exchanger 104, an indoor fan 105, and the like are accommodated.

  The indoor heat exchanger 104 exchanges heat with the air in the room in contact. The indoor fan 105 is a cross flow fan for sucking air in the room, passing it through the indoor heat exchanger 104, and discharging the air after heat exchange into the room. The indoor fan 105 has a long and thin cylindrical shape, and is arranged so that the central axis is parallel to the horizontal direction. Furthermore, the indoor fan 105 is rotationally driven by an indoor fan motor (not shown).

  A suction opening 123 for taking in the air in the room into the indoor unit casing 113 is formed on the upper surface of the indoor unit casing 113. For this reason, the air in the room taken in from the suction opening 123 is harmonized by the indoor heat exchanger 104 in the indoor unit casing 113 and the like.

  Further, a blowing opening 130 is formed in the lower front portion of the indoor unit casing 113. A flap 122 is provided in the vicinity of the blowing opening 130. The flap 122 is a plate-like member having a shape that is long in the longitudinal direction of the indoor unit casing 113, and includes a rotary shaft 128 that is parallel to the longitudinal direction of the indoor unit casing 113 and a flap drive motor (not shown). ing. The flap 122 shields or opens the blowing opening 130 by being rotated about the rotation shaft 128 by the flap drive motor. In addition, by adjusting the inclination angle of the flap 122 with respect to the horizontal plane, the flap 122 can change the air direction of the air blown into the room from the blowing opening 130. Note that the inside of the room where air is blown from the air conditioner includes an interior zone IZ that is a living space of the air-conditioning subject and a perimeter zone PZ that is a space near the window W2 and the wall surface W1 rather than the interior zone IZ. It is an indoor space. Further, the flap 122 can be in three states (a closed state, a swing state, and a perimeter angle state) according to the operation of the air conditioner. Next, each state of the flap 122 will be described.

  In the closed state, as shown in FIG. 14, the flap 122 is in a state where the blowing opening 130 is substantially closed.

  In the swing state, as shown in FIGS. 15 and 16, the flap 122 varies around the rotation axis 128 within an angular range in which the blowing direction of the air blown from the blowing opening 130 faces the interior zone IZ. Therefore, in the swing state, air is blown out from the blowout opening 130 to the interior zone IZ within a predetermined wind direction range. In FIG. 15, an example of a wind direction (corresponding to the first wind direction) of the air blown from the blowing opening 130 in the swing state is indicated by an arrow A3.

  In the perimeter angle state, as shown in FIGS. 17 and 18, the flap 122 has an angle at which the blowing direction of the air blown from the blowing opening 130 faces the perimeter zone PZ. For this reason, in the perimeter angle state, more air is blown out from the blowout opening 130 to the perimeter zone PZ than to the interior zone IZ. In FIG. 17, in the perimeter angle state, the air direction (corresponding to the second air direction) of the air blown out from the blowing opening 130 is indicated by an arrow A4.

  In the indoor unit 101 having the above configuration, for example, when the indoor fan 105 is rotated when the flap 122 is in a swing state, air in the room is drawn from the suction opening 123 as shown in FIG. The air is sucked and sent to the indoor heat exchanger 104. When the air sent to the indoor heat exchanger 104 passes through the indoor heat exchanger 104, the temperature is adjusted to become conditioned air. The conditioned air that has passed through the indoor heat exchanger 104 is supplied from the blowout opening 130 to the interior zone IZ in the room.

  Further, when the indoor fan 105 is rotated when the flap 122 is in the perimeter angle state, the air in the room is sucked from the suction opening 123 and sent to the indoor heat exchanger 104 as shown in FIG. It is done. When the air sent to the indoor heat exchanger 104 passes through the indoor heat exchanger 104, the temperature is adjusted to become conditioned air. The conditioned air that has passed through the indoor heat exchanger 104 is supplied from the blowout opening 130 to the perimeter zone PZ in the room.

  In the air conditioner including the wall-mounted indoor unit 101, the flap 122 is used when the controller determines that the temperature of the interior zone IZ in the room is stable, as in the above embodiment. Is switched from the swing state to the perimeter angle state, or when at least one of the switching conditions is satisfied, the flap 122 is switched from the perimeter angle state to the swing state. As a result, an air barrier can be formed in the perimeter zone PZ. Therefore, the possibility that the air in the window W2 and the wall surface W1 will advance into the interior zone IZ can be reduced.

  Thereby, when the heating operation is performed in winter, it is possible to suppress the cold radiation and the cold air intrusion from the window W2 and the wall surface W1, and when the cooling operation is performed in the summer, the window W2 and the wall surface W1. Can reduce the effects of solar radiation.

  15 and 17, reference numeral 133 indicates a room temperature thermistor for detecting temperature information of the interior zone IZ in the room.

(C)
In the above embodiment, the determination unit 62 determines whether or not the conditions (1) to (7) are satisfied. Further, the control unit 60 determines whether the temperature of the interior zone IZ in the room is stable based on the determination by the determination unit 62.

  Instead of this, in addition to the conditions (1) to (7), the following conditions can be determined by the determination unit to determine whether or not the temperature of the interior zone in the room is stable: It may be included.

(8) More than a predetermined time (corresponding to the fifth predetermined time and the eighth predetermined time) has elapsed since the flap state became the swing state. (9) The operating frequency (Hz) of the compressor is within the predetermined range. The heating operation or the cooling operation in the state is performed for a predetermined time or more. (10) The heating operation or the cooling operation in a state where the temperature of the indoor heat exchanger is within the predetermined range is performed for the predetermined time or more. A state where the opening degree of the electric expansion valve is within a predetermined range has passed for a predetermined time or more. (12) A state where the temperature of the interior zone in the room is within the predetermined range has passed for a predetermined time. (13) Predetermined The deviation between the temperature of the interior zone in the room and the set temperature within the time is within a predetermined range. Note that the control unit determines that the conditions (1) to (8) are satisfied by the determination unit, and From (9) If one of the conditions of 13) has been determined to have been met, the temperature of the interior zones in the room is determined to be stable. Further, the above conditions (9) to (13) are conditions that are determined during capability supply, that is, during operation of the compressor.

(D)
In the above embodiment, when the control unit 60 determines that at least one of the switching conditions (1) to (5) is satisfied, the state of the flaps 22a and 22b is swung from the perimeter angle state. Switch to state.

  In addition to this, conditions other than the conditions (1) to (5) may be included as switching conditions.

(6) The operation is stopped in the air conditioner (7) The operation mode is changed (8) The indoor heat exchanger more than a predetermined temperature from the temperature of the indoor heat exchanger when the flap state becomes the perimeter angle state When the controller determines that at least one of the switching conditions (1) to (8) is satisfied, the control unit changes the flap state from the perimeter angle state to the swing state. Switch. For example, when the condition (8) is satisfied, an excessive short circuit can be prevented.

(E)
In the above embodiment, in the perimeter angle state, the flap 22b is fixed at an angle at which the blowing direction of the air blown from the blowing opening 24b faces the perimeter zone PZ.

  Alternatively, the flap angle may not be fixed in the perimeter angle state. Moreover, a part of the range in which air is blown in the swing state and the range in which air is blown in the perimeter angle state may overlap.

  For example, in the swing state (corresponding to the first wind direction state), as shown in FIG. 19, the flaps 222a and 222b are angles at which the blowing direction of the air blown from the blowing openings 224a and 224b mainly faces the interior zone IZ. The range is varied around the rotation axis. For this reason, in the swing state, air is blown out from the blowout openings 224a and 224b mainly within the predetermined wind direction range B1 with respect to the interior zone IZ. In FIG. 19, in the swing state, the direction of air blown out most toward the wall surface W1 and the window W2 of the room among the air directions blown out from the blowout openings 224a and 224b is indicated by reference numeral A6, and the blowout openings 224a and 224b The direction of the air blown out from the side of the room farthest from the wall surface W1 and the window W2 of the room, that is, the direction of the air blown out to the central space side in the room is indicated by reference numeral A5. In other words, the predetermined wind direction range B1 in the swing state is a range from the wind direction A5 to the wind direction A6.

  In the perimeter angle state (corresponding to the second wind direction state), as shown in FIG. 19, the flaps 222a and 222b are angles at which the blowing direction of the air blown out from the blowing openings 224a and 224b mainly faces the perimeter zone PZ. The range is varied around the rotation axis. For this reason, in the perimeter angle state, air is blown out from the blowing openings 224a and 224b mainly into the perimeter zone PZ within a predetermined wind direction range B2. In the perimeter angle state, more air is blown out to the perimeter zone PZ than in the interior zone IZ by blowing out air in the predetermined wind direction range B2. Further, in FIG. 19, in the perimeter angle state, among the air directions blown out from the blowout openings 224a and 224b, the wind direction blown out most toward the wall surface W1 and the window W2 of the room is indicated by A8, and the blowout openings 224a, 224a, Of the wind directions of the air blown from 224b, the wind direction blown to the side farthest from the wall surface W1 and the window W2 side of the room is indicated by reference numeral A7. In other words, the predetermined wind direction range B2 in the perimeter angle state is a range from the wind direction A7 to the wind direction A8. Further, in this modification, the wind direction A7 in the perimeter angle state is a wind direction toward the wall surface W1 and the window W2 of the room, compared to the wind direction A5 in the swing state. Further, the wind direction A8 in the perimeter angle state is a wind direction toward the wall surface W1 and the window W2 of the room rather than the wind direction A6 in the swing state.

  As described above, the air direction range B2 in the perimeter angle state is arranged closer to the perimeter zone PZ than the wind direction range B1 in the swing state, so that an air barrier can be formed in the perimeter zone PZ. Therefore, it is possible to reduce the risk that the air in the vicinity of the wall surface W1 and the window W2 advances into the interior zone.

  As a result, when heating operation is performed in winter, cooling radiation and cold air intrusion from the window and wall surface can be suppressed, and when cooling operation is performed in summer, it is caused by solar radiation from the window and wall surface. The influence can be suppressed.

  In FIG. 19, reference numeral 221 indicates a panel, and reference numeral 223 indicates a first opening.

  Since the present invention can maintain comfort in a room without providing a dedicated outlet, application to an air conditioner is effective.

20 Decorative panel (casing)
23 1st opening (suction opening)
60 control unit 61 acquisition unit 62 determination unit 100 air conditioner 113 indoor unit casing (casing)
4,104 Indoor heat exchanger (heat exchanger)
5,105 Indoor fan (fan)
22a, 22b, 122, 222a, 222b Flap (wind direction adjustment part)
24a, 24b, 124, 224a, 224b Outlet opening

JP 2000-337651 A

Claims (12)

A casing in which blowout openings (224a, 224b) are formed;
A first wind direction state in which air is blown into the first wind direction range (B1) from the blowing opening and a second wind direction state in which air is blown into the second wind direction range (B2) from the blowing opening can be switched. A wind direction adjustment unit (222a, 222b),
It is determined whether or not the temperature in the room is stable, and in the first state where the temperature is not stable, the switching operation of the wind direction adjusting unit is controlled so as to be in the first wind direction state. And a control unit for controlling the switching operation of the wind direction adjusting unit so as to be in the second wind direction state in the second state which is a state different from the first state and in which the temperature is stable. And comprising
The second wind direction, which is the blowing direction of the air blown into the second wind direction range, is the wind direction blown along the wall surface (W1) of the room,
Of the second wind direction, the second outermost wall side wind direction (A8) blown out most toward the wall surface side is the blowout direction of the air blown into the first wind direction range, and blows out most toward the wall surface side among the first wind directions. Is the wind direction toward the wall surface than the first outermost wall surface wind direction (A6),
The second room side wind direction (A7) blown out farthest from the wall surface side among the second wind directions is the first room side wind direction (A5) blown out farthest from the wall surface side among the first wind directions. Than the wind direction toward the wall surface,
Air conditioner. In the casing, apart from the blowout opening, a suction opening for taking in the air in the room is formed,
The suction opening is provided on the wall surface side with respect to the blowing opening,
The air conditioner according to claim 1. The casing is attached to the wall surface of the room,
The air conditioner according to claim 1. An acquisition unit having a function of acquiring temperature information in the room;
In the heating operation, when the air blowing direction from the blowing opening is the second wind direction, the control unit sets the obtaining unit to a function stop state in which the function is stopped. Is possible,
The air conditioner according to any one of claims 1 to 3. The control unit causes the acquisition unit to be in the function stop state until a first predetermined time has elapsed from when the air blowing direction from the blowing opening is switched from the second wind direction to the first wind direction. Is possible,
The air conditioner according to claim 4. The control unit has a determination unit that determines whether or not the temperature in the room is stable,
The determination unit includes the first condition that a difference between a temperature in the room calculated using temperature information in the room and a preset temperature set in advance is within a predetermined range, and the heating operation. A second condition that a second predetermined time or more has elapsed since the start of the air-conditioning operation, a third condition that has passed a third predetermined time or more after the acquisition unit has entered the function stop state, and The temperature in the room is satisfied when at least one of the fourth conditions that a state in which the air blowing direction from the blowing opening is the first wind direction has passed for a fifth predetermined time or more has been satisfied. Is determined to be stable,
The air conditioner according to claim 4 or 5. A heat exchanger for exchanging heat with the air in the room taken into the casing;
The control unit has a first switching condition in which a fourth predetermined time or more has elapsed since the wind direction adjusting unit was switched from the first wind direction to the second wind direction, and the temperature of the heat exchanger is equal to or higher than a predetermined temperature. A second switching condition that there is, a third switching condition that a difference between the temperature in the room calculated using the temperature information and a preset set temperature is outside the predetermined range, and defrosting Controlling the switching operation of the wind direction adjusting unit from the second wind direction to the first wind direction when at least one of the fourth switching conditions that the operation is being performed satisfies the switching condition;
The air conditioner according to claim 6. The control unit has a determination unit that determines whether or not the temperature in the room is stable,
The determination unit includes a first condition that a difference between a temperature in the room calculated using temperature information in the room and a preset temperature set in advance is within a predetermined range; The second condition that the sixth predetermined time or more has elapsed since the start, the seventh predetermined time from the function stop state in which the function of the acquisition unit having the function of acquiring the temperature information in the room is stopped At least one of the third condition that has passed above and the fourth condition that the state in which the air blowing direction from the blowout opening is the first wind direction has passed for an eighth predetermined time or more is satisfied. If it is satisfied, it is determined that the temperature in the room is stable.
The air conditioner according to claim 1. A heat exchanger for exchanging heat with the air in the room taken into the casing;
The control unit has a first switching condition that the ninth predetermined time has elapsed since the wind direction adjusting unit was switched from the first wind direction to the second wind direction, and the temperature of the heat exchanger is equal to or higher than a predetermined temperature. A second switching condition that there is, a third switching condition that a difference between the temperature in the room calculated using the temperature information and a preset set temperature is outside the predetermined range, and defrosting Controlling the switching operation of the wind direction adjusting unit from the second wind direction to the first wind direction when at least one of the fourth switching conditions that the operation is being performed satisfies the switching condition;
The air conditioner according to claim 8. A fan that is housed in the casing and capable of generating an air flow blown out of the blowout opening;
The control unit controls rotation of the fan so that the fan has a predetermined air volume at the time of the second wind direction.
The air conditioner according to any one of claims 1 to 9. The control unit controls the rotation of the fan so that the fan has the predetermined air volume by changing the rotation speed of the fan in a plurality of times.
The air conditioner according to claim 10. When the control unit controls the switching operation of the wind direction adjusting unit from the first wind direction to the second wind direction, the fan has the predetermined air volume before controlling the switching operation of the wind direction adjusting unit. To control the rotation of the fan,
The air conditioner according to claim 10 or 11.

Images