JP5268668B2 - Air conditioner - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To obtain an air conditioner providing a comfortable air current for each of a plurality of persons in a room. <P>SOLUTION: The air conditioner 1 includes: a casing 20 constituting an outer shell of the air conditioner 1 and having a suction port 2 for sucking indoor air and a blowout port 8 for blowing out conditioned air; a cross flow fan 5 provided within the casing 20, sucking the indoor air and blowing out the conditioned air; a heat exchanger 4 arranged within an air duct formed by the cross flow fan 5 and conditioning the sucked indoor air to generate the conditioned air; vertical wind direction control plates 9 provided at the blowout port 8 and vertically controlling the wind direction of the air current blown out of the blowout port 8; lateral wind direction control plates 10 provided at the blowout port 8 and laterally controlling the wind direction of the air current blown out of the blowout port 8; and an air quantity control plate 11 provided on the air course between the cross flow fan 5 and the lateral wind direction control plates 10, controlling the air quantity of the air current blown out of the blowout port 8 and divided into a plurality of sections laterally. <P>COPYRIGHT: (C)2010,JPO&amp;INPIT

Description

  The present invention is capable of independently controlling the airflow at the outlet divided into a plurality of left and right parts in spite of the air conditioner using one cross flow fan, and each of a plurality of persons in the room. The present invention relates to an air conditioner that can provide a comfortable airflow. In addition, an airflow means the conditioned air by which the wind direction, the air volume, and temperature which were blown out from an air conditioner were controlled.

  Conventionally, a vertical wind direction control plate divided into three and a left and right wind direction control plate corresponding to the vertical wind direction control plate have been provided, and the wind direction of the conditioned air is controlled using these vertical wind direction control plate and left and right wind direction control plate. And the air conditioner which blows off from a blower outlet is proposed. Specifically, the upper and lower airflow direction control plates other than the center are set in the direction in which the outlet is closed, and the left and right airflow direction control plates are set in the direction in which the outlet flow is narrowed down to the center. The comfort of a person in the room can be improved by increasing the wind speed of the airflow (see, for example, Patent Document 1).

JP 2001-153428 A

  The conventional air conditioner is provided with an up / down air direction control plate and a left / right air direction control plate divided into three parts, and only controls the air direction of the conditioned air blown out using these up / down air direction control plates and the left / right air direction control plates. As a result, there is a problem that, even if the wind direction of the blown air flow of conditioned air can be controlled at each of the divided outlets, the air volume cannot be controlled.

  For example, when there are a plurality of people in a room and the positions where the respective people exist are different, there is a problem in that the airflow requested by each of the plurality of people cannot be blown.

  The present invention has been made to solve the above-described problems, and an object thereof is to obtain an air conditioner that can provide a comfortable airflow to each of a plurality of persons in a room.

An air conditioner according to the present invention constitutes an outline of the air conditioner, and includes a housing having a suction port for sucking indoor air and a blower outlet for blowing conditioned air,
A cross flow fan that is provided in the housing and sucks indoor air and blows out conditioned air;
A heat exchanger that is arranged in an air passage formed by a cross flow fan and that harmonizes sucked room air and generates conditioned air;
An up-and-down air direction control plate that is provided at the air outlet and controls the air direction of the airflow blown from the air outlet in the up and down direction;
A left and right airflow direction control plate that is provided at the air outlet and controls the airflow direction of the airflow blown from the air outlet in the left and right direction;
An air volume control plate provided in an air path between the cross flow fan and the left and right air direction control plate and divided into a plurality of right and left portions for controlling the air volume of the air flow blown out from the outlet.

Further, the air conditioner according to the present invention constitutes an outer shell of the air conditioner, and includes a housing having a suction port for sucking in indoor air and a blowout port for blowing out the conditioned air,
A cross flow fan that is provided in the housing and sucks indoor air and blows out conditioned air;
A heat exchanger that is arranged in an air passage formed by a cross flow fan and that harmonizes sucked room air and generates conditioned air;
An up-and-down air direction control plate that is provided at the air outlet and controls the air direction of the airflow blown from the air outlet in the up and down direction;
A left and right airflow direction control plate that is provided at the air outlet and controls the airflow direction of the airflow blown from the air outlet in the left and right direction;
An indoor air ventilation path that is provided on the back side of the housing and takes in room air sucked from the suction port and opens to the air path so that the taken room air merges with the conditioned air downstream of the crossflow fan And.

  An air conditioner according to the present invention includes an air volume control plate that is provided in an air passage between a cross-flow fan and a left and right air direction control plate, and is divided into a plurality of right and left portions that control the air volume of an air flow blown out from an air outlet. It is configured or provided on the back side of the housing and takes in the indoor air sucked from the suction port, and the air flow so that the taken indoor air merges with the conditioned air downstream of the cross flow fan Since the indoor air ventilation path that opens is provided, there is an effect that a comfortable airflow can be provided to each target person in the room.

FIG. 3 shows the first embodiment and is a longitudinal sectional view of the air conditioner 1. FIG. 3 is a diagram illustrating the first embodiment, and is a longitudinal sectional view of the air conditioner 1 in a state where an air volume control plate 11 is housed in an air volume control plate housing portion 15. FIG. 4 is an enlarged cross-sectional view of the air volume control plate 11 showing the first embodiment. FIG. 4 is a diagram showing the first embodiment, and is a perspective view showing a state where an air volume control plate 11 is attached to the rear guider 7. FIG. 5 is a diagram illustrating the first embodiment, and is a conceptual diagram illustrating an arrangement of an up / down air direction control plate 9, a left / right air direction control plate 10, and an air volume control plate 11. FIG. 3 shows the first embodiment and is a rear perspective view of the air conditioner 1; FIG. 5 shows the first embodiment and shows the rotation angle θ of the air volume control plate 11. FIG. 5 shows the first embodiment and is a diagram showing the relationship between the rotation angle θ of the air volume control plate 11 and the blown air volume. FIG. 3 is a diagram illustrating the first embodiment, and is a schematic diagram illustrating an air flow of a usage example 1 of the air volume control plate 11 of the air conditioner 1 ((a) is a front view, (b) is a left side view, and (c) is a right side view). The figure, (d) is the figure which looked at the room from the front of the air conditioner 1, (e) the figure which looked at the floor of the room). FIG. 3 is a diagram illustrating the first embodiment, and is a schematic diagram illustrating an airflow of a usage example 2 of the air volume control plate 11 of the air conditioner 1 ((a) is a front view, (b) is a left side view, and (c) is a right side view). The figure, (d) is the figure which looked at the room from the front of the air conditioner 1, (e) the figure which looked at the floor of the room). FIG. 3 is a diagram illustrating the first embodiment, and is a schematic diagram illustrating an air flow of a usage example 3 of the air volume control plate 11 of the air conditioner 1 ((a) is a front view, (b) is a left side view, and (c) is a right side view). The figure, (d) is the figure which looked at the room from the front of the air conditioner 1, (e) the figure which looked at the floor of the room). FIG. 3 is a diagram illustrating the first embodiment, and is a schematic diagram illustrating an airflow of a usage example 4 of the air volume control plate 11 of the air conditioner 1 ((a) is a front view, (b) is a left side view, and (c) is a right side view). The figure, (d) is the figure which looked at the room from the front of the air conditioner 1, (e) the figure which looked at the floor of the room). FIG. 3 is a diagram illustrating the first embodiment, and is a schematic diagram illustrating an airflow of a usage example 4 of the air volume control plate 11 of the air conditioner 1 ((a) is a front view, (b) is a left side view, and (c) is a right side view). The figure, (d) is the figure which looked at the room from the front of the air conditioner 1, (e) the figure which looked at the floor of the room). For comparison, a schematic diagram showing an air flow when the air conditioner 100 is not blown with the air volume control plate 11 ((a) is a front view, (b) is a right side view, and (c) is a room). The figure seen from the front of the air conditioner 1, (d) is the figure which looked at the floor of the room). FIG. 5 shows the second embodiment and is a longitudinal sectional view of the air conditioner 1. FIG. 16 shows the second embodiment, and is an enlarged view of a portion X in FIG. 15. It is a figure which shows Embodiment 2, and is a longitudinal cross-sectional view of the air conditioner 1 of the modification 1. FIG.

Embodiment 1 FIG.
FIGS. 1 to 13 are diagrams showing the first embodiment. FIG. 1 is a longitudinal sectional view of the air conditioner 1, and FIG. 2 is an air conditioner 1 in which the air volume control plate 11 is housed in the air volume control plate housing section 15. 3 is an enlarged cross-sectional view of the air flow control plate 11, FIG. 4 is a perspective view showing a state in which the air flow control plate 11 is attached to the rear guider 7, and FIG. 5 is a vertical air direction control plate 9 and a left and right air direction control plate. FIG. 6 is a perspective view of the rear surface of the air conditioner 1, FIG. 7 is a view showing a rotation angle θ of the air volume control plate 11, and FIG. 8 is a view of the air volume control plate 11. FIG. 9 is a diagram showing the relationship between the rotation angle θ and the blown air volume, FIG. 9 is a schematic diagram showing the air flow of the usage example 1 of the air volume control plate 11 of the air conditioner 1 ((a) is a front view, and (b) is the left side). (C) is a right side view, (d) is a view of a room as viewed from the front of the air conditioner 1, and (e) is a floor surface of the room from the air conditioner 1. FIG. 10 is a schematic diagram showing the airflow of the usage example 2 of the air volume control plate 11 of the air conditioner 1 ((a) is a front view, (b) is a left side view, and (c) is a right side view). FIG. 11D is a view of the room as viewed from the front of the air conditioner 1, FIG. 11E is a view of the floor of the room as viewed from the air conditioner 1, and FIG. 11 is an air flow control plate 11 of the air conditioner 1. (A) is a front view, (b) is a left side view, (c) is a right side view, and (d) is a view of a room as viewed from the front of the air conditioner 1. FIG. , (E) is a view of the floor of the room from the air conditioner 1), and FIGS. 12 and 13 are schematic views showing the airflow of the usage example 4 of the air volume control plate 11 of the air conditioner 1 ((a) is Front view, (b) is a left side view, (c) is a right side view, (d) is a view of the room from the front of the air conditioner 1, and (e) is a view of the floor of the room from the air conditioner 1. It is a view).

  FIGS. 14A and 14B are diagrams for comparison, and are schematic diagrams illustrating an air flow during down-blowing of the air conditioner 100 without the air volume control plate 11 ((a) is a front view, (b) is a right side view, ( (c) is the figure which looked at the room from the front of the air conditioner 1, (d) is the figure which looked at the floor of the room from the air conditioner 100).

  The air conditioner 1 according to the present embodiment is a separate type air conditioner including an indoor unit and an outdoor unit, and is particularly characterized in the configuration of the indoor unit. Hereinafter, the indoor unit will be described, and the outdoor unit will not be mentioned. An air conditioner refers to an indoor unit.

  Before starting a specific description, an outline of the present embodiment will be described. Assume that there are a plurality of people in a room and the positions of the plurality of people are different. The demand for conditioned air blown out from the air conditioner 1 varies from person to person. In the conventional air conditioner, the wind direction of the conditioned air can be controlled by the control of the up / down wind direction control plate and the left / right wind direction control plate, but the wind direction and the air volume at each outlet cannot be changed independently. For this reason, the conditioned air reaches a person existing in the room by controlling the wind direction of the conditioned air. However, it has not been possible to satisfy each person's request for the air volume.

  In order to satisfy each person's request for the air volume of conditioned air, it is necessary to provide a plurality of air outlets and blow out conditioned air of different air volumes from the air outlets.

  As a method for realizing this, for example, it is conceivable to provide a plurality of cross flow fans corresponding to a plurality of outlets, but the number of fan motors increases and the internal configuration of the air conditioner becomes complicated. This is not a preferable method.

  Although the air conditioner 1 of this embodiment uses one cross flow fan, by providing an air volume control plate between the cross flow fan and the vertical air direction control plate and the left and right air direction control plate, It is possible to blow out conditioned air having different air volumes from a plurality of air outlets.

  If there is a member that narrows the air passage on the downstream side in the vicinity of the cross flow fan, even if the air passage is not completely blocked, it is difficult for the wind to flow downstream from the narrowed portion. The air conditioner 1 of the present embodiment uses this property to provide an air volume control plate between the cross flow fan, the vertical air direction control plate, and the left and right air direction control plates, thereby allowing different air volumes from a plurality of air outlets. It is possible to blow out conditioned air.

  The left and right referred to in the present embodiment are the left and right when the air conditioner 1 is viewed from the front.

  In FIG. 1, an air conditioner 1 is installed in a casing 20, a cross flow fan 5 that sucks indoor air and blows the sucked air into the room, and a wind formed by the cross flow fan 5. A heat exchanger 4 that is arranged in the road and harmonizes the sucked indoor air to generate conditioned air, a filter 3 that captures dust contained in the sucked air, and an up-and-down air direction control that controls the blowing air direction of the conditioned air The board 9 and the right / left air direction control board 10 and the air volume control board 11 for controlling the air volume of the cross flow fan 5 are provided at least. Hereinafter, each component will be described individually.

  The casing 20 has a cylindrical shape in which both end surfaces (not shown) are closed, a part of the top surface (upper side in the figure) is opened, and the opening portion forms a suction port 2 for sucking room air. doing. Then, the indoor air sucked from the suction port 2 exchanges heat with the refrigerant in the heat exchanger 4 to become conditioned air, and a blowout formed by opening a part of the bottom surface (lower side in the figure) of the housing 20. This conditioned air is blown out from the outlet 8. The front surface (left side in the figure) of the housing 20 is opened, and a front panel 21 that opens and closes the opening is provided. The back surface (right side in the figure) is closed.

  The cross flow fan 5 is disposed slightly below the central portion in a side view of the housing 20, and is installed in an air path extending from the suction port 2 to the air outlet 8. The air outlet side air passage between the cross flow fan 5 and the air outlet 8 is formed by the stabilizer 6, the rear guider 7, and both end faces of the housing 20. The cross flow fan 5 is rotationally driven by a motor (not shown).

  The air outlet 8 is provided with an up / down air direction control plate 9 that controls the air direction of the airflow (conditioned airflow) blown out from the air outlet 8 in the vertical direction and a left / right airflow direction control plate 10 that controls the airflow in the left / right direction. The up / down air direction control plate 9 and the left / right air direction control plate 10 are divided into two parts on the left and right sides, and can be independently controlled to rotate. However, it is not limited to two on the left and right. There may be more than one.

  The heat exchanger 4 includes a front side lower heat exchanger 4a located at the lower front side, a front side upper heat exchanger 4b located at the upper front side, and a back side heat exchanger 4c located at the rear side. Is done. The heat exchanger 4 is disposed between the suction port 2 and the cross flow fan 5 so as to surround the cross flow fan 5, and harmonizes (cools, heats, dehumidifies, etc.) the indoor air sucked from the suction port 2. , Produce conditioned air. Further, the front-side lower heat exchanger 4 a is disposed above the stabilizer 6. The front lower heat exchanger 4a side opposite to the outlet side air passage of the stabilizer 6 is a dew receiving portion (drain pan) that receives the dew condensation water (drain water) generated in the heat exchanger 4.

  In the figure, the heat exchanger 4 is arranged so as to surround the top surface side and the front surface side of the cross flow fan 5, but this embodiment is not limited to the arrangement form, for example, The back side heat exchanger 4c may not be provided.

  Further, as shown in FIG. 1, the filter 3 is disposed so as to cover the entire surface of the suction port 2 along the suction port 2 side between the suction port 2 of the housing 20 and the heat exchanger 4, and is not shown in the drawing. An automatic cleaning device is installed between the front side lower heat exchanger 4a and the front panel 21.

  The air flow control plate 11 for controlling the air flow of the cross flow fan 5 is divided into two parts corresponding to the up / down air direction control plate 9 and the left / right air direction control plate 10. The air volume control plate 11 is not limited to two on the left and right. A plurality of vertical and vertical airflow direction control plates 9 and left and right airflow direction control plates 10 may be used.

  The single air volume control plate 11 has a substantially rectangular flat plate shape as a whole. The longitudinal direction of the plurality of air volume control plates 11 in this embodiment is substantially the same as the left and right direction of the air conditioner 1 (as viewed from the front). Is rotatably attached to the housing 20.

  Further, the length L (see FIG. 3) in the blowing direction in a side view of the air flow control plate 11 is a length that does not come into contact with the left and right air flow control plates 10 when the air flow control plate 11 rotates in the vertical direction. The length is such that the air volume can be controlled by rotating up and down.

  In the example shown in FIG. 1, the air volume control plate 11 includes rotating shafts (not shown) at both ends in the longitudinal direction (the left-right direction of the air conditioner 1). The rotating shaft is pivotally supported by the rear guider 7 on the outlet side air passage downstream of the cross flow fan 5 so as to be rotatable in the vertical direction.

  As will be described later, the attachment position of the air flow control plate 11 to the housing 20 may be anywhere between the cross flow fan 5, the up / down air direction control plate 9, and the left / right air direction control plate 10 as long as they do not interfere with them.

  In the example of FIG. 1, the air volume control plate 11 is pivotally supported by the housing 20 (rear guider 7) so as to be rotatable in the vertical direction, but may be slid. This point will also be described later.

  When the air volume control plate 11 is not used to control the air volume, the air volume control plate 11 is housed in the air volume control plate housing section 15 which is a recess formed in the rear guider 7.

  As shown in FIG. 2, the air volume control plate 11 has a cross-sectional shape that forms a smooth air outlet side air passage with the rear guider 7 in a state where the air volume control plate 11 is stored in the air volume control plate storage portion 15 in the rear guider 7.

  That is, as shown in FIG. 3, the cross-sectional shape of the air flow control plate 11 is such that the rear surface 11d on the rear guider 7 side is slightly convex on the rear guider 7 side, and the airway surface 11c is slightly concave on the airway side. It is an arc. This arc is smoothly connected to the arc of the rear guider 7 in a state where the air volume control plate 11 is stored in the air volume control plate storage portion 15 of the rear guider 7. Thereby, in the state where the air volume control plate 11 is stored in the air volume control plate storage portion 15 of the rear guider 7, it is possible to prevent the ventilation resistance in the blowing side air passage.

  The state in which the air volume control plate 11 is housed in the air volume control plate housing portion 15 of the rear guider 7 is defined as “the air volume control plate 11 is housed”, and the air volume control plate 11 is blown out from the air volume control plate housing portion 15. The air volume control plate 11 is defined as “rotating in the air path” when it moves in a direction that suppresses the flow of conditioned air.

  If the air volume control plate 11 has a structure that does not protrude into the blow-out side air passage and does not impede the flow of conditioned air in the state of being housed in the air volume control plate housing portion 15, the air volume control plate 11 is indented in the rear direction of the rear guider 7. May be stored in the air volume control plate storage section 15. However, when the air volume control plate 11 is housed in the air volume control plate housing section 15 and there is a recess (concave part) in the air volume control board housing section 15 facing the blow-out side air passage, the air volume control plate 11 flows therethrough. Since there is a possibility that conditioned air may be vortexed, in the state of being stored in the air volume control plate storage portion 15, the air flow side surface 11 c of the air volume control plate 11 is connected as smoothly as possible to the rear guider 7. It is desirable to configure so that the air volume control plate housing portion 15 cannot be recessed (not recessed) without projecting into the blowing side air passage and at the portion facing the blowing side air passage of the rear guider 7.

  The arrangement of the up / down air direction control plate 9, the left / right air direction control plate 10 and the air volume control plate 11 will be described with reference to FIGS.

  As shown in FIG. 4, the air volume control plate 11 is divided into an air volume control plate (left) 11a and an air volume control plate (right) 11b so that the left and right blown air volumes of the conditioned air can be independently controlled. The air flow control plate (left) 11a is longer in the left-right direction than the air flow control plate (right) 11b. This is because, when the air volume control plate 11 is divided at the substantially central portion of the air conditioner 1, an electrical component storage portion (not shown) is present at the right end of the air conditioner 1, and therefore the air volume control plate (right) 11b. This is because the air flow control plate (left) 11a becomes shorter. However, this is an example, and the present invention is not limited to this form.

  FIG. 5 schematically shows the arrangement of the up / down air direction control plate 9, the left / right air direction control plate 10, and the air volume control plate 11. As shown in FIG. 5, the up-and-down air direction control plate 9 is arranged substantially in the center of the air conditioner 1 in the left-right direction of the air conditioner 1, the up-and-down air direction control plate (left) 9 a and the up-and-down air direction control plate (right) 9 b. It is divided in parts.

  The left and right air direction control plate 10 is also divided into a left and right air direction control plate (left) 10 a and a left and right air direction control plate (right) 10 b in the left and right direction of the air conditioner 1 at a substantially central portion of the air conditioner 1. Yes.

  The arrows shown in FIG. 5 indicate the flow of conditioned air. In FIG. 5, the left and right wind direction control plate (left) 10a is directed to the left, and the left and right wind direction control plate (right) 10b is directed to the right, so that the conditioned air is blown right and left.

  In FIG. 5, the up / down airflow direction control plate 9, the left / right airflow direction control plate 10 and the airflow rate control plate 11 have the same left and right lengths. However, in actuality, like the airflow rate control plate 11 in FIG. Is different.

  When the flow of conditioned air is blocked using the air volume control plate 11, unlike the conventional case where the flow of conditioned air is blocked by the vertical wind direction control plate 9 and the left and right wind direction control plate 10, the stabilizer 6 and the rear guider 7 Even when the blowout side air passage formed by the both end faces of the housing 20 is not completely closed as shown in FIG. 1, the conditioned air can be prevented from blowing out toward the blowout port 8.

  This is because the ventilation resistance of the flow path formed between the stabilizer 6 and the air volume control plate 11 is increased by rotating the air volume control plate 11 to the blow-out side air path, and the air flow is close to the cross flow fan 5. This is because the path is closed, so that the indoor air sucked from the suction port 2 stays in the cross flow fan 5 and does not blow out from the flow path between the stabilizer 6 and the air volume control plate 11. That is, since the resistance to circulate in the cross flow fan 5 is smaller than the ventilation resistance of the flow path between the stabilizer 6 and the air flow control plate 11, it stays in the cross flow fan 5 and stays in the cross flow fan 5. 11 does not blow out from the flow path between the two.

  As shown in FIG. 6, the air volume control plate 11 is independently provided on the left and right sides of the rear guider 7 by the left and right stepping motors 12 a and 12 b positioned near the left and right ends of the air conditioner 1 using the link mechanism. It can be driven.

  The rotation range of the air volume control plate 11 is a range in which the air flow control plate 11 does not come into contact with the cross flow fan 5 as a rotating body from the state stored in the air volume control plate storage portion 15 on the rear guider 7.

  As shown in FIG. 7, the rotation position of the air volume control plate 11 is represented by a rotation angle θ [°] from the air volume control plate storage portion 15.

  Further, the distance (width) of the flow path between the tip 11e (see FIG. 3) of the air flow control plate 11 and the stabilizer 6 is set to w.

  Next, the operation will be described. In the air conditioner 1 configured as described above, when the cross flow fan 5 is driven and rotated by the fan motor, indoor air outside the air conditioner 1 is sucked from the suction port 2. The indoor air sucked from the suction port 2 exchanges heat with the refrigerant of the refrigeration cycle in the heat exchanger 4 to be harmonized. The indoor air is cooled by the refrigerant during the cooling operation and heated during the heating operation.

  The conditioned air heat-exchanged with the refrigerant in the heat exchanger 4 passes between the stabilizer 6 and the rear guider 7, the air volume and the wind direction are controlled by the air volume control plate 11, the left and right wind direction control plate 10, and the up and down air direction control plate 9. The air is blown out from the outlet 8 to the outside (indoor) of the air conditioner 1.

  The air volume control plate 11 has a rotation shaft provided on the rear guider 7 on the outlet side air passage downstream of the cross flow fan 5 and is pivotally supported so as to be rotatable in the vertical direction. Therefore, by rotating the air volume control plate 11 to the air outlet side air passage, the air flow from the air outlet 8 can be controlled by blocking or restricting the blowing of conditioned air from the air air volume control plate 11 to the downstream side.

  Also, as shown in FIGS. 4 and 5, the air flow control plate (left) 11a and the air flow control plate (right) 11b are divided and attached so that the left and right blown air flows of the conditioned air can be controlled independently. Yes. Therefore, by setting the rotation angle θ of the air volume control plate (left) 11a and the air volume control plate (right) 11b, the left and right blown air volumes of the conditioned air can be controlled respectively.

  FIG. 8 shows an example of the relationship between the rotation angle θ [°] of the air volume control plate 11 and the blown air volume ratio [%] of the conditioned air when the air volume control plate 11 is rotated to the blow side air path. Here, the blown air flow rate ratio [%] of the conditioned air means that the air flow control plate 11 with respect to the blown air flow of the conditioned air when the air flow control plate 11 is completely stored in the air flow control plate storage unit 15 (θ = 0). This is the ratio [%] of the blown air volume of conditioned air when it is rotated by θ.

  As shown in FIG. 8, by rotating the air volume control plate 11 to the blowing side air passage, as the rotation angle θ of the air volume control plate 11 increases, the conditioned air blowing air flow ratio gradually decreases. When the rotation angle θ of the air volume control plate 11 is around 60 °, the ratio of the conditioned air blown air volume is about 5%. FIG. 7 is substantially equivalent to the state at this time. The stabilizer 6 and the air volume control plate 11 are separated by a distance w, and there is almost no conditioned air toward the air outlet 8 despite the presence of an air passage (flow path) communicating with the air outlet 8.

  In this way, by providing the air flow control plate 11 between the cross flow fan 5 and the left and right air direction control plates 10 and the up and down air direction control plate 9, the conditioned air is blown out by the left and right air direction control plates 10 and the up and down air direction control plate 9. In addition to the control of the wind direction, it is possible to control the amount of conditioned air blown.

  Since it is possible to control both the blowing direction and the air volume of the conditioned air, it is possible to provide a comfortable air flow to each of a plurality of persons in a room that could not be realized conventionally.

  A specific example will be described below. First, as usage example 1, it is assumed that the room temperature varies depending on the position of the room such as a window or a place where people come and go (near the door).

  FIG. 9 is a schematic diagram showing the airflow of the usage example 1 of the air volume control plate 11 of the air conditioner 1. There are two people, A and B, in the room. The person A is in a place where there is little heat coming and going near the wall. Also, the person B is in a place where there is a lot of heat coming and going, such as a window or a place where people come and go.

  The presence positions of the person A and the person B in the room are detected by scanning the infrared sensor 30 disposed in the vicinity of the air outlet 8 in the substantially central portion of the front surface of the air conditioner 1.

  The air volume of the conditioned air is reduced for the person A who is in a place where heat enters and exits near the wall, compared to the person B who is located in a place where much heat enters and exits, such as a place near the window or where people come and go.

  Since the temperature change is gentle in the place where the heat in and out of the wall is small, the air volume of the conditioned air may be smaller than the place where the heat goes in and out.

  The air volume of the conditioned air is increased for the person B who is in a place where there is a lot of heat going in and out, such as a window or a place where people come and go, compared to the person A who is in a place where the heat goes in and out near the wall.

  In order to reduce the air volume of the conditioned air to the person A who is in a place where the heat in and out of the wall is small, as shown in FIG. 9B, the air volume control plate (left) 11a is blown out by a predetermined angle θ. Turn to. Thereby, the airflow A blown out from the left side of the air outlet 8 is controlled by the airflow control plate (left) 11a because the airflow control plate (left) 11a is rotated to the airflow path by the predetermined angle θ. The air volume can be reduced as compared with the state stored in the plate storage unit 15.

  The person B who is in a place where there is a lot of heat coming and going, such as a window or a place where people come and go, blows out an airflow B having a larger air volume than the airflow A blown out from the left side of the outlet 8.

  In the example shown in FIG. 9C, the air volume control plate (right) 11b is stored in the air volume control plate storage section 15, and therefore the air volume is maximum.

  The airflow direction of the airflow A and the airflow B is determined by a control device (not shown) (mounted with a microcomputer) based on the position information of the person A and the person B detected by the infrared sensor 30. 9 and the left and right wind direction control plate 10 are controlled by transmitting a control signal to a drive unit (not shown). Similarly, the rotation of each of the left and right air flow control plates (left) 11a and the air flow control plate (right) 11b (including not rotating) is also controlled by this control device.

  Next, as Usage Example 2, when the distance from the air conditioner 1 to the person existing in the room is different, there are persons near the air conditioner 1 and persons far from the air conditioner 1 Is assumed.

  FIG. 10 is a schematic diagram illustrating the airflow of the usage example 2 of the air volume control plate 11 of the air conditioner 1. There are two people, A and B, in the room. The person A is near the air conditioner 1. The person B is at a position far away from the air conditioner 1.

  Also in this case, the presence positions of the person A and the person B in the room are detected by scanning the infrared sensor 30 disposed in the vicinity of the air outlet 8 in the substantially central portion of the front surface of the air conditioner 1.

  The air volume of the conditioned air may be less for the person A who is near the air conditioner 1 than for the person B who is far from the air conditioner 1.

  In order to reach the airflow from the air conditioner 1 to the person B who is far away, a certain amount of airflow is required.

  In order to reduce the air volume of the conditioned air to the person A near the air conditioner 1, as shown in FIG. 10B, the air volume control plate (left) 11a is turned to the blowing side air path by a predetermined angle θ. Move. Thereby, the airflow A blown out from the left side of the air outlet 8 is controlled by the airflow control plate (left) 11a because the airflow control plate (left) 11a is rotated to the airflow path by the predetermined angle θ. The air volume can be reduced as compared with the state of being stored in the plate storage portion 15.

  The person B who is far from the air conditioner 1 blows out the airflow B having a larger air volume than the airflow A blown out from the left side of the air outlet 8.

  As shown in FIG. 10 (c), the air volume control plate (right) 11b is housed in the air volume control plate housing section 15, so that the air volume is maximum. Further, in order to make the air flow reach the person B far away from the air conditioner 1, the air volume of the air flow B is increased, and the vertical air direction control plate (right) 9b is set to be upward from the vertical air direction control plate (left) 9a. (FIG. 10A).

  Also in this case, the wind directions of the airflow A and the airflow B are determined by the control device (not shown) based on the position information of the person A and the person B detected by the infrared sensor 30. Control is performed by transmitting a control signal to the drive unit (not shown).

  That is, the control device controls the up / down air direction control plate (left) 9a downward and the left / right air direction control plate (left) 10a leftward. Further, the vertical wind direction control plate (right) 9b is controlled by the control device slightly upward, and the left and right wind direction control plate (right) 10b is controlled by the control device.

  Similarly, the rotation of each of the left and right air volume control plates (left) 11a and the air volume control plate (right) 11b (including not rotating) is also controlled by the control device.

  When heating the floor of a room that is a person's feet during heating operation, a certain amount of airflow is required to allow the warm air to reach the floor. However, in the conventional air conditioner 100 without the air volume control plate 11 (see FIG. 14), the air volume is controlled by the number of rotations of the cross flow fan 5, but as shown in FIG. If the airflow is too large, the air flow is too wide to air-condition the wide area. If the airflow is reduced, the airflow D does not reach the floor. Even if the wind speed is increased by contracting with the left and right wind direction control plate 10 or the like, there is a problem that the amount of heat is insufficient and the floor surface of the room, which is a person's foot, is not warmed.

  FIG. 11 is a schematic diagram showing the airflow of the usage example 3 of the air volume control plate 11 of the air conditioner 1. There is one person in the room. And it is a case where an airflow is intensively blown out near the floor surface of the room which is the step of the person at the time of heating operation.

  As shown in FIG. 11 (b), the air flow control plate (left) 11a is blown out at an angle θ such that the conditioned air from the crossflow fan 5 does not blow out downstream of the air flow control plate (left) 11a. Turn to the road.

  Therefore, even if the up / down air direction control plate 9 is opened as shown in FIG. 11A, the conditioned air is not blown out from the left side of the outlet 8 (from the up / down air direction control plate (left) 9a side).

  As shown in FIG. 11 (c), the air volume control plate (right) 11 b is stored in the air volume control plate storage portion 15, so that the air volume is maximum.

  At this time, the wind speed of the conditioned air blown out only from the right side of the blowout port 8 is the same as that blown out from the entire blowout port 8 (both sides).

  Further, in the heat exchanger 4 (left side as viewed from the front) where the airflow is blocked by the air flow control plate (left) 11a, heat exchange between the indoor air and the refrigerant is not performed, and thus the temperature of the refrigerant rises. (During heating operation).

  Accordingly, the temperature of the heat exchanger 4 (right side as viewed from the front) corresponding to the air volume control plate (right) 11b stored in the air volume control plate storage portion 15 also rises.

  Therefore, the temperature of the airflow B blown from the right side of the air outlet 8 (during heating operation) can be raised, for example, higher than the temperature of the airflow D of FIG. It is possible to quickly warm the vicinity of the floor of a room.

  Ellipses indicated by broken lines on the floor of the room, which is the feet of the person in FIGS. 11D and 11E, indicate areas where the airflow D in FIGS. 14C and 14D reaches. Moreover, the ellipse drawn smaller than that on the inside indicates an area where the airflow B reaches. Furthermore, the difference in color density between the area where the airflow D in FIG. 14 reaches and the area where the airflow B in FIG. 11 reaches indicates a difference in the temperature of the airflow. The darker the color, the higher the temperature.

  As can be seen from a comparison between FIG. 11 and FIG. 14, in the usage example 3 of the air flow control plate 11 shown in FIG. 11, the air flow B is narrowed down compared to the air flow D of FIG. The temperature of B becomes high.

  An operation that warms the targeted place intensively and quickly is defined as “spot heating”.

  In FIG. 11, the air flow control plate (left) 11a is rotated to the air flow path at an angle θ so that the conditioned air from the cross flow fan 5 does not blow downstream of the air flow control plate (left) 11a. The air volume control plate (right) 11b is accommodated in the air volume control plate accommodating portion 15, but the opposite is also possible.

  FIG. 12 is a schematic diagram illustrating the airflow of the usage example 4 of the air volume control plate 11 of the air conditioner 1.

  When the air volume control plate (left) 11a is closed as shown in use example 3 in FIG. 11 so as not to emit air from one side of the air passage, it corresponds to one side of the heat exchanger 4 (air volume control plate (left) 11a). In part), heat exchange between the indoor air and the refrigerant is not performed. Therefore, the high pressure of a refrigerating cycle becomes high, the power consumption of a compressor increases, and the new subject that it becomes an inefficient operation arises.

  The usage example 4 shown in FIG. 12 solves such a problem, and in order to perform efficient operation, as shown in FIG. 12 (b), the air volume control plate (left) 11a is slightly opened to make a small amount. The air current A is generated. The rotation angle θ of the air volume control plate (left) 11a is about 50 °. For reference, the rotation angle θ of the air volume control plate (left) 11a shown in FIG. 11B is about 60 °.

  Then, as shown in FIG. 12A, the up / down air direction control plate (left) 9 a is closed, and the left / right air direction control plate (left) 10 a is directed to the right side of the outlet 8.

  Further, as shown in FIG. 12C, the air volume control plate (right) 11b is stored in the air volume control plate storage section 15, and therefore the air volume (air flow B) is the maximum.

  By doing in this way, as shown to Fig.12 (a), the airflow C which the airflow A merged with the airflow B is blown out from the right side of the blower outlet 8. FIG.

  The ellipses indicated by broken lines on the floor of the room, which is the foot of the person in FIGS. 12D and 12E, indicate the area where the airflow D in FIGS. 14C and 14D reaches. In addition, an ellipse drawn smaller than that inside indicates an area where the airflow C reaches. Furthermore, the difference in color density between the area where the airflow D in FIG. 14 reaches and the area where the airflow C in FIG. 11 reaches indicates the difference in the temperature of the airflow. The darker the color, the higher the temperature.

  By slightly opening the air flow control plate 11a to generate a small amount of airflow A, heat exchange between the indoor air and the refrigerant is performed in substantially the entire heat exchanger 4, so that the use example 3 shown in FIG. The high pressure of the refrigeration cycle is lowered, and the compressor can be operated efficiently.

  When the amount of heat J exchanged by the heat exchanger 4 is constant, the air volume Q passing through the heat exchanger 4 and the temperature change ΔT of the conditioned air due to passing through the heat exchanger are in an inversely proportional relationship, and the air volume Q is If it is less, the temperature change ΔT increases. That is, the temperature of the small amount of airflow A in FIG. 12A is higher than the temperature of the airflow D (FIG. 14). Further, since the air flow is restricted by the air volume control plate (left) 11a, the heat exchange between the indoor air and the refrigerant in the heat exchanger 4 is small, so the temperature of the refrigerant rises and is stored in the air volume control plate storage section 15. Since the temperature of the heat exchanger 4 (right side when viewed from the front) corresponding to the air volume control plate (right) 11b is also increased, the temperature of the airflow C is higher than the temperature of the airflow D (FIG. 14).

  Therefore, the control of the air flow control plate 11 remains the same as in FIG. 12, and the capacity of the air conditioner 1 (here, the heating capacity) is reduced by lowering the operating frequency of the compressor (not shown) driven by the inverter of the outdoor unit. ) Can be lowered to make the temperature of the airflow C substantially equal to the temperature of the airflow D (FIG. 14) (see FIG. 13).

  Compared to the case where the air volume control plate 11 of FIG. 14 is not used, the floor temperature of the person at the target position can be kept as it is, and the area can be narrowed and air-conditioned.

  At this time, the power consumption of the compressor is reduced due to the decrease in the operating frequency, and the load of the fan motor that drives the cross flow fan 5 is reduced due to the reduction in the air flow of the cross flow fan 5, thereby consuming the fan motor. Energy saving operation is achieved by reducing power consumption. The energy saving operation in which the area shown in FIG. 13 is narrowed and the operation frequency of the compressor is lowered is defined as “spot energy saving heating”.

  In the above description, the air volume control plate 11 is provided on the rear guider 7 so that the air volume control plate 11 is pivotally supported by the rear guider 7 so as to be rotatable in the vertical direction. Although the movement angle is controlled (including not rotating), the air volume control plate 11 may slide in the horizontal direction or the vertical direction (any direction) from the rear guider 7 (not shown). When it is desired to control the air volume using the air flow, the air volume control plate 11 is configured to project by sliding on the blowout side air passage. Even with such a configuration, the control device controls the slide amount of the air flow control plate 11 to control the distance (width) of the flow path between the tip of the air flow control plate 11 slid and the stabilizer 6. Thus, it is possible to control the air volume such as blocking or restricting the air volume, that is, setting an appropriate air volume ratio.

  Further, the air volume control plate 11 may be configured to be provided on the side of the stabilizer 6, and the same operation is performed by configuring so as not to affect the operations of the vertical air direction control plate 9 and the left and right air direction control plate 10. be able to.

  Furthermore, in the above description, the vertical wind direction control plate 9 and the left and right wind direction control plate 10 have been divided into left and right parts and can be rotated independently. However, the vertical wind direction control plate 9 and the left and right wind direction control plate 10 are left and right. Even when not divided, the above-mentioned “spot heating” is possible by using the air volume control plate 11.

  That is, in the case of “spot heating” shown in FIG. 11, the up / down air direction control plate 9 and the left / right air direction control plate 10 are not related to the control of the air flow B.

  When only the vertical wind direction control plate 9 is not divided into left and right, "spot energy saving heating" is possible.

  That is, in the case of “spot energy saving heating” shown in FIG. 13, even if the up / down air direction control plate (left) 9 a is open, the left / right air direction control plate (left) 10 a is directed to the right side of the air outlet 8, This is because an air flow substantially equivalent to the air flow C shown can be generated. In short, even if the up / down air direction control plate 9 is not divided into left and right, the left / right air direction control plate 10 may be divided into left and right and can be controlled independently.

Embodiment 2. FIG.
15 to 17 are diagrams showing the second embodiment. FIG. 15 is a longitudinal sectional view of the air conditioner 50, FIG. 16 is an enlarged view of a portion X in FIG. 15, and FIG. FIG.

  The air conditioner 50 shown in FIG. 15 takes in the room air sucked from the suction port 2 and passed through the filter 3 to the back side of the housing 20, and the taken room air is on the downstream side of the cross flow fan 5. An indoor air ventilation path 13 is provided that opens to the outlet side air path so as to merge with the conditioned air. Here, the blowout side air passage is the air passage between the cross flow fan 5 and the air outlet 8 as in the first embodiment, and is formed by the stabilizer 6, the rear guider 7, and both end faces of the housing 20. It is.

  Indoor air passing through the indoor air ventilation path 13 does not pass through the heat exchanger 4. The inlet of the indoor air ventilation path 13 is opened at a position where indoor air that does not pass through the heat exchanger 4 but passes through the filter 3 flows. Therefore, the temperature of the indoor air passing through the indoor air ventilation path 13 does not change. The temperature is higher than the temperature of the conditioned air during the cooling operation, and is lower than the temperature of the conditioned air during the heating operation.

  Therefore, the temperature of the conditioned air can be changed by joining the conditioned air downstream of the cross flow fan 5. The temperature of the conditioned air is raised during the cooling operation, and the temperature of the conditioned air is lowered during the heating operation.

  The indoor air ventilation path 13 opens to the blowout side air path as an outlet on the downstream side of the cross flow fan 5, but in the vicinity of the outlet, the indoor air ventilation path 13 has a function of opening and closing the communication with the air path. A door 40 is provided (see FIG. 16).

  The opening / closing door 40 is provided inside the indoor air ventilation path 13 and is configured such that the opening / closing door 40 does not protrude into the blow-out side air path when opening / closing. This is to prevent the ventilation resistance of conditioned air.

  The indoor air ventilation path 13 is divided into a plurality of right and left parts corresponding to the up and down air direction control plate 9 and the left and right air direction control plate 10.

  The air conditioner 50 shown in FIG. 15 does not include the air volume control plate 11. Since the other structure of the air conditioner 1 is the same as that of the air conditioner 1 shown in FIG. 1, description is abbreviate | omitted.

  The indoor air ventilation path 13 is used, for example, to eliminate the temperature unevenness when the room temperature is uneven. That is, an air flow in which room air is mixed with conditioned air is sent to an area where there is little change in temperature, such as near a wall, by opening the opening / closing door 40 of the indoor air ventilation path 13. Further, in an area where the temperature changes near the window or near the door, the open / close door 40 of the indoor air ventilation path 13 is closed to send conditioned air.

  Also, for example, if there are two people in the room, they have different feelings about the heat and cold, or one person has stayed in this air-conditioned room, while the other person When the person has just entered the room from the outside and the airflow required for the air conditioner 50 differs from person to person, an airflow having a different temperature can be sent to each person.

  When the open / close door 40 is open, the indoor air in the indoor air ventilation path 13 is pulled by the conditioned air flowing through the blow-out side air path and flows out into the air path. As a result, a flow of indoor air is generated in the indoor air ventilation path 13 from the inlet located in the upper part of the air conditioner 50 toward the outlet opening facing the blow-out side air path. The room air that has not passed continuously merges with the conditioned air in the blowing side air passage.

  In addition to controlling the airflow direction of the airflow by the up / down airflow direction control plate 9 and the left / right airflow direction control plate 10, by providing the indoor air ventilation path 13 provided with the opening / closing door 40, the temperature of the airflow can also be controlled. By controlling the opening / closing amount of the open / close door 40, it is possible to control the amount of indoor air that has not passed through the heat exchanger 4 that joins the conditioned air. Can be adjusted separately.

  The opening / closing door 40 shown in FIG. 16 rotates to change the opening area of the outlet of the indoor air ventilation path 13, and adjusts the flow rate of the indoor air flowing through the indoor air ventilation path 13 (closes and does not allow the indoor air to circulate). However, it may be configured to change the opening area of the outlet by sliding. Also in this case, the slide amount is controlled to control the amount of room air that has not passed through the heat exchanger 4 that joins the conditioned air in the blow-out side air passage, thereby adjusting the temperature of the blown airflow.

  Further, the opening / closing door 40 may be provided between the inlet or the inlet and the outlet of the indoor air ventilation path 13 without being provided at the outlet of the indoor air ventilation path 13.

  The air conditioner 60 of Modification 1 shown in FIG. 17 is provided with the air volume control plate 11 described in Embodiment 1 in addition to the indoor air ventilation path 13 provided with the opening / closing door 40.

  In addition to the function described in the first embodiment, the air conditioner 60 of the first modification can also control the temperature of the airflow.

  That is, it is possible to control the airflow direction using the up / down airflow direction control plate 9 and the left / right airflow direction control plate 10, to control the airflow amount of the airflow using the airflow control plate 11, and to control the temperature of the airflow using the indoor air ventilation path 13 including the opening / closing door 40. It becomes.

  Regardless of the air conditioner 1 that uses a single crossflow fan 5, the airflow at the outlet 8 divided into a plurality of left and right can be controlled independently, and each of a plurality of persons in the room can be controlled. It is possible to provide comfortable conditioned air (air flow) in which the wind direction, air volume and temperature are controlled.

  DESCRIPTION OF SYMBOLS 1 Air conditioner, 2 Intake port, 3 Filter, 4 Heat exchanger, 4a Front side lower heat exchanger, 4b Front side upper heat exchanger, 4c Rear side heat exchanger, 5 Cross flow fan, 6 Stabilizer, 7 Rear guider , 8 Air outlet, 9 Vertical air direction control plate, 9a Vertical air direction control plate (left), 9b Vertical air direction control plate (right), 10 Left and right air direction control plate, 10a Left and right air direction control plate (left), 10b Left and right air direction control plate ( Right), 11 Air flow control plate, 11a Air flow control plate (left), 11b Air flow control plate (right), 11c Front surface, 11d Back surface, 11e Tip, 12a Stepping motor, 12b Stepping motor, 13 Indoor air ventilation path, 15 Air flow control Plate storage unit, 20 housing, 21 front panel, 30 infrared sensor, 40 door, 50 air conditioner, 60 air conditioner, 100 empty Conditioner.

Claims (11)

In air conditioners installed indoors,
The casing of the air conditioner is provided with a suction port for sucking indoor air, a blow-out port for blowing out conditioned air , a stabilizer, and a rear guider, and reaches the blow-out port from the suction port. as part of the air passage, a housing that form a blowing side air passage by the both end portions of the left and right and the stabilizer and the rear guider,
The housing provided in the body, the cross-flow fan to blow out the conditioned air in together when sucking the indoor air to the outlet side air passage,
Disposed air passage leading to the outlet from the inlet, and a heat exchanger for generating the conditioned air in harmony with the room air the cross flow fan is sucked,
An up-and-down air direction control plate that is provided at the air outlet and controls the air direction of the airflow blown out from the air outlet in the up and down direction;
A left and right air direction control plate that is provided at the air outlet and controls the air direction of the airflow blown from the air outlet in the left and right direction;
An air volume control plate that is rotatably or slidably provided on the stabilizer or the rear guider between the cross flow fan and the left and right air direction control plate, and controls the air volume of the airflow blown out from the air outlet. An air flow control plate that is divided into a plurality of portions and whose overall length in the left-right direction substantially matches the distance between the left and right ends of the housing;
An air conditioner characterized by comprising a. A control device that sets each rotation angle or slide amount of each of the air volume control plates divided into a plurality of air volume control plates.
The air conditioner according to claim 1, further comprising: The control device detects the position of a person in the room, and detects a rotation angle or a slide amount of the air volume control plate corresponding to the detected position of the air volume control board divided into a plurality of parts. It sets according to a person's position, The air conditioner of Claim 2 characterized by the above-mentioned. The stabilizer or the rear guider is provided with a recess for storing the air volume control plate,
If the detected person's position is near the window or near the door, the control device stores the air volume control plate corresponding to the detected person's position in the recess, and the detected person's position must be near the window or near the door. 4. The air conditioner according to claim 3, wherein the air volume control plate corresponding to the detected position of the person is caused to protrude into the air outlet side air passage. The stabilizer or the rear guider is provided with a recess for storing the air volume control plate,
If the detected person's position is far from the air conditioner, the control device stores the air volume control plate corresponding to the detected person's position in the recess, and the detected person's position is close to the air conditioner. 4. The air conditioner according to claim 3, wherein the air volume control plate corresponding to the detected position of the person is caused to protrude into the air outlet side air passage. The stabilizer or the rear guider is provided with a recess for storing the air volume control plate,
In the heating operation of the air conditioner, the control device stores any one of the air volume control plates divided into a plurality of the air volume control plates in the recess, and sends the other air volume control plates to the blowout air. The air conditioner according to claim 2, wherein the air conditioner is protruded into a side air passage. The controller controls the rotation angle or the slide amount of the other air volume control plate so that the conditioned air does not blow to the downstream side of the other air volume control plate during the heating operation of the air conditioner. The air conditioner according to claim 6, wherein the air conditioner is set to an angle or a slide amount. The stabilizer or the rear guider is provided with a recess for storing the air volume control plate,
The air volume control plate is configured so that a surface on the blowing side air passage side forms a smooth curved surface together with a surface on the air blowing side air passage side of the stabilizer or the rear guider while being housed in the recess. The air conditioner according to claim 1. The air conditioner according to any one of claims 1 to 8, wherein the up-and-down air direction control plate is divided into the same plurality as the air volume control plate on the left and right. Wherein the rear side of the housing, the takes in the indoor air sucked from the suction port, the outlet-side air passage to the fetched indoor air merges with the conditioned air at the downstream side of the cross flow fan The air conditioner according to any one of claims 1 to 9, wherein an indoor air ventilation path that opens to the inside is provided . The air conditioner according to claim 10, further comprising an opening / closing door provided in the indoor air ventilation path and opening / closing a portion of the indoor air ventilation path that opens to the blow-out air path .