JP5732579B2 - Air conditioner - Google Patents

Description

  The present invention relates to an air conditioner.

  In a conventional air conditioner, an up-and-down wind direction plate is provided so as to close the blowing part when stopped and to open the blowing part during operation.

  In particular, recent air conditioners have been proposed in which an up-and-down wind direction plate having a wider width than an actual air outlet is provided in order to improve harmony and design of an indoor unit.

  For example, as disclosed in Patent Document 1, a rotation mechanism for shifting the rotation axis of the vertical wind direction plate and the rotation axis of the drive device thereof is installed, and a drive mechanism for coupling the rotation axis of the vertical wind direction plate and the rotation shaft of the drive device is provided. In addition to improving the design of the indoor unit, there is an effect that the ventilation width in the room can be expanded to improve the distribution of the ventilation in the room.

  On the other hand, in an air conditioner, in general, the vertical airflow direction plate of the air outlet is directed downward so that warm air is directed toward the feet during heating operation, and the vertical airflow direction plate is substantially horizontal during cooling operation so that the chilled air flows into the face and head. The comfort is ensured by flowing near. This is because natural convection warm air goes up and cold air goes down, so that the heating / cooling effect is spread throughout the room and the room becomes comfortable.

  At this time, especially in the cooling operation, the humid air is cooled on the solid surface lower than the ambient temperature at the end of the up-and-down wind direction plate and the outlet end of the blow-out port where the ambient air and the blow-out air are in contact with each other, resulting in condensation. Sometimes. Condensation may be dripped by long-time operation, which is a serious complaint for users. In order to prevent this, it is common to attach a member having a hygroscopic effect to a place where there is a possibility of causing condensation, or a member that insulates from the surrounding member. In some cases, dew condensation is prevented by providing an auxiliary wind direction plate that is fixed downward or rotatable downward at the air outlet with the vertical air direction plate provided at the air outlet facing downward.

JP 2002-106948 A Japanese Patent Laid-Open No. 7-77351

  However, in the configuration of the up-and-down air direction plate and the driving device described in Patent Document 1, there is a concern that the ventilation resistance increases because the rotation axis of the up-and-down air direction plate and the rotation axis of the driving device are inside the air path.

  Moreover, in order to prevent dew condensation due to cold air, such as the outlet end of the blower outlet, if another member having a moisture absorption effect is used, the separate member can be seen by the user at the time of use, resulting in a loss of design or an increase in cost. . Or even if it can prevent dew condensation with the composition of patent documents 2, it cannot constitute an up-and-down wind direction board whose width is longer than a blower outlet, without interfering with a main part outline.

An object of the present invention is to provide an air conditioner that can prevent the front vertical airflow direction plate from interfering with the main body during operation.

In the present invention, in order to solve the above-mentioned problem, an up-and-down wind direction plate that changes the air blown from the outlet in the up-and-down direction is provided, and the up-and-down wind direction plate is located on the front side of the rear up-and-down wind direction plate and the rear up-and-down wind direction plate. The front vertical wind direction plate is connected to the wind direction plate driving device via the arm, and the center of the rotation axis of the front vertical wind direction plate is above the same plane as the upper surface of the outlet. The upper surface of the air outlet has a convex portion, and during cooling operation, the gap between the upper surface of the air outlet and the front vertical wind direction plate is the upper surface of the air outlet and the front vertical air direction plate when there is no convex portion. Narrower than the gap between.

According to the present invention, the front vertical wind direction plate can be prevented from interfering with the main body during operation.

The perspective view which shows the driving | operation of the indoor unit of embodiment which concerns on this invention. The principal part longitudinal cross-sectional view which shows during operation | movement of the indoor unit of embodiment which concerns on this invention. FIG. 3 is a perspective view showing that the indoor unit according to the embodiment of the present invention is stopped. The principal part longitudinal cross-sectional view which shows the operation stop of the indoor unit of embodiment which concerns on this invention. The enlarged view of the blower outlet vicinity of FIG. 2 which concerns on embodiment of this invention. The enlarged view of the blower outlet vicinity of FIG. 4 which concerns on embodiment of this invention. The enlarged view which shows the time of the air_conditionaing | cooling driving | operation vicinity of the blower outlet of FIG. 2 which concerns on embodiment of this invention. The enlarged view which shows the flow state at the time of the air_conditionaing | cooling driving | operation around the front part up-and-down wind direction board 12 of FIG. 2 which concerns on embodiment of this invention. The enlarged view which shows the state at the time of the extremely weak air_conditioning | cooling near the blower outlet of FIG. 2 or heating operation which concerns on embodiment of this invention. The enlarged view which shows the state at the time of the heating operation of the blower outlet vicinity of FIG. 2 which concerns on embodiment of this invention.

  Embodiments of the present invention will be described below with reference to the accompanying drawings. In addition, the same site | part, an arrow, etc. are shown with the same code | symbol, and the overlapping description is abbreviate | omitted.

  The indoor unit configuration, function, and operation of the air conditioner according to the present invention will be described.

  First, with reference to FIGS. 1 to 6, the configuration of the indoor unit of the air conditioner according to the embodiment of the present invention will be described in detail. Here, in the indoor unit of the air conditioner according to the present invention, FIG. 1 is a perspective view during operation, and FIG. 2 is a longitudinal sectional view of a main part during operation. FIG. 3 is a perspective view when the operation is stopped, and FIG. 4 is a longitudinal sectional view of the main part when the operation is stopped. 5 is an enlarged view 100 of the air outlet near the air outlet 4 in FIG. 2, and FIG. 6 is an enlarged view 101 of the air outlet near the air outlet 4 in FIG.

  First, the schematic structure of the air conditioning apparatus according to the present embodiment will be described. The air conditioner according to the present embodiment includes a compressor, an outdoor heat exchanger, an outdoor blower, a four-way valve, and an expansion valve, and an outdoor unit (not shown) installed outdoors and the indoor heat exchange shown in FIGS. The room 5 is provided with the indoor cross-flow fan 6 and is connected to an indoor unit attached to the wall surface of the room via a refrigerant pipe (not shown) to enable indoor air conditioning.

  In FIG. 1, the indoor unit includes a horizontally long casing 1 having a height dimension larger than the depth dimension and a width dimension larger than the height dimension. The housing 1 has an air outlet 4 formed at the front of the lower surface of the housing 1 with air taken in from an upper suction portion 2 formed on the upper surface of the housing 1 and a front suction portion 3 formed on the front upper portion of the housing 1. The air flow path which blows out from is formed in the inside. As shown in FIG. 2, the indoor cross-flow fan 6 is arranged in the center of the air flow path with a length that matches the longitudinal direction of the air flow path in the housing 1. Further, as shown in FIG. 1, a front drain tray 7 and a rear drain tray 8 are provided before and after the indoor cross-flow fan 6, and the indoor cross-flow fan straddling the front drain tray 7 and the rear drain tray 8. An indoor heat exchanger 5 is arranged so as to cover the upper part of 6.

  Moreover, the indoor air intake port of the present embodiment includes an upper suction portion 2 that is always opened and a front suction portion 3 that is provided so that the movable panel 9 can be opened and closed. As shown in FIG. 2, the upper suction portion 2 is provided on a substantially horizontal upper surface, and the front suction portion 3 is formed with a size of about 3/5 of the front surface of the substantially vertical housing 1. And the structure which opens and closes the front suction part 3 formed in the upper part of the front surface of the housing 1 with the movable panel 9 is provided. The movable panel 9 is formed of a plate-like member, and the lower end portion of the movable panel 9 is rotatably attached via a panel rotation shaft 10, and the upper portion of the movable panel 9 is connected to a panel drive mechanism unit 11 provided in the housing 1. It is connected.

  According to this structure, by operating the panel drive mechanism 11, the movable panel 9 is swung around the panel rotation shaft 10, and the front suction part 3 is opened as shown in FIGS. As shown in FIGS. 3 and 4, the front suction portion 3 can be closed.

  As shown in FIG. 2, the air outlet 4 is formed along the longitudinal direction of the housing 1 so that the air flow generated by the indoor once-through fan 6 can be efficiently blown forward. The lower part of the front drain pan 7 is largely opened.

  Further, the blower outlet 4 is provided with a plate-like wind direction plate including a front vertical wind direction plate 12 and a rear vertical wind direction plate 13. The front vertical wind direction plate 12 functions as a guide for the airflow blown from the blowout port 4 (deflects the vertical wind direction of the airflow blown from the blowout port 4), and the panel rotation shaft 10 of the movable panel 9. It has the function of a decorative member that makes the vicinity inconspicuous.

  As shown in FIG. 3, the movable panel 9 of this embodiment has a structure that covers the entire upper part of the front so that the front is divided into upper and lower parts, so that the gap near the panel rotation shaft 10 is full of the width of the casing 1. To occur. Therefore, in this embodiment, the lateral width of the front vertical wind direction plate 12 is set to a size that covers the housing surface formed adjacent to the lower portion of the movable panel 9, that is, substantially the same as the lateral width of the housing 1. .

  Further, the depth dimension of the front vertical wind direction plate 12 is formed smaller than the depth dimension of the rear vertical wind direction plate 13, and the front vertical wind direction plate 12 is closed between the front suction part 3 and the outlet 4. It has a size that covers the surface of the body to be formed.

  Further, as shown in FIG. 1, the front vertical airflow direction plate 12 has a front vertical airflow direction plate rotating shaft 17 disposed in front of the air outlet 4 by a plurality of arms 16 in the lateral direction (longitudinal direction) of the air outlet 4. And is rotatably provided by a wind direction plate driving device (not shown).

  On the other hand, the rear vertical wind direction plate 13 has a function of guiding the air flow blown from the blower outlet 4 and a function of concealing the blower outlet 4 when closed. For this reason, the lateral width of the rear vertical wind direction plate 13 is set to a size that can cover the front portion of the outlet 4. The depth dimension of the rear vertical wind direction plate 13 is large enough to cover the vicinity of the front vertical wind direction plate rotating shaft 17 (the rear end of the front vertical wind direction plate 12) with the rear vertical wind direction plate 13 closed. . The rear vertical wind direction plate 13 is connected to a wind direction plate driving device (not shown) by a plurality of arms in the lateral direction of the air outlet 4, and is rotatable around a rear vertical air direction plate rotating shaft 18 disposed behind the air outlet 4. Provided.

  Here, the structure of the blower outlet 4 is demonstrated in detail using FIG. A front auxiliary wind direction plate 15 connected to an arm 16 of the front vertical wind direction plate 12 is installed on the front vertical wind direction plate 12 provided in front of the air outlet 4. When the front auxiliary wind direction plate 15 is in an upward wind direction such as cooling operation, the front vertical wind direction plate 12 is at an upward angle, and the front auxiliary wind direction plate 15 is in a downward direction such as heating operation so that the front auxiliary wind direction plate 15 is horizontal with respect to the floor surface. The front upper wind direction plate 12 'is at a downward angle and the front auxiliary wind direction plate 15 is at an angle that is substantially perpendicular to the floor surface. The extension line is installed at an angle that intersects the front vertical wind direction plate 12.

  Further, a convex portion 14 is provided at the outlet upper end corner of the outlet 4. The convex portion 14 is formed such that the top portion is opposite to the flow path with respect to the air outlet upper surface 200, and the flow path of the air outlet upper surface 200 is smoothly expanded upward. Moreover, the convex part 14 is provided in the whole cross-sectional width of the blower outlet 4 with the same cross section.

  Next, the center position of the front vertical wind direction plate rotating shaft 17 will be described in detail with reference to FIG. In FIG. 6, the point C is the center of the front vertical wind direction plate rotating shaft 17. The point D1 is the windward end of the front vertical wind direction plate 12 at the operation stop angle position, and is on the side opposite to the wind path with respect to the blower outlet upper surface 200. Point D2 is the windward end of the front vertical wind direction plate 12 'at the maximum angular position for guiding the blown wind downward. Furthermore, the surface Y shows the same surface as the air outlet upper surface 200, and the surface Z shows the main body lower surface outer shape.

  Here, the point C is provided at a position where the relationship between the distance L1 from D1 to C and the shortest distance L2 between the point D2 and Y where the front vertical wind direction plate 12 'rotates until it contacts Z is L1> L2. It is done.

  By providing the center C of the front vertical airflow plate rotating shaft 17 at a position satisfying the above-described relationship, for example, as in the present embodiment, the horizontal width of the front vertical airflow direction plate 12 is made approximately the same size as the housing 1. And an indoor unit with high design can be realized.

  In the present embodiment, the drive mechanisms of the indoor cross-flow fan 6 and the movable panel 9 and the drive mechanisms of the front vertical wind direction plate 12 and the rear vertical wind direction plate 13 are controlled by a control unit (not shown) provided in the housing 1. In addition, the control unit can accept an operation instruction by a remote operation device (not shown). For this reason, a signal transmission / reception unit for transmitting / receiving an operation signal to / from a remote controller (not shown) is provided on one side of the housing 1 surface.

  As shown in FIGS. 1 and 2, the control unit according to the present embodiment controls the movable panel 9, the front vertical wind direction plate 12, and the rear vertical wind direction plate 13 to be opened, as shown in FIGS. Then, as shown in FIGS. 3 and 4, the movable panel 9, the front up / down wind direction plate 12, and the rear up / down wind direction plate 13 are closed, and the front suction unit 3 and the outlet 4 are concealed.

  Then, the detail of operation | movement in each driving | running state in a present Example is demonstrated. When the indoor unit is in an operating state, the indoor cross-flow fan 6 is operated to take in indoor air from the upper suction portion 2 and the front suction portion 3 that is largely open, and the indoor heat exchanger 5 performs temperature and humidity according to the operation mode. Then, the heat exchanged room air can be blown out according to the front vertical wind direction plate 13 and the rear vertical wind direction plate 13 which are opened at a predetermined angle corresponding to the operation mode.

  The state of the front vertical wind direction plate 12 and the rear vertical wind direction plate 13 during the cooling operation will be described with reference to FIG. FIG. 7 is an enlarged view 100 of the air outlet in the vicinity of the air outlet 4 in FIG. 2, in which the front vertical air direction plate 12 and the rear vertical air direction plate 13 are rotated to the position during the cooling operation.

  When the air conditioner is in cooling operation, the front vertical airflow direction plate 12 is used in a horizontal direction and the rear vertical airflow direction plate 13 is used in a direction substantially parallel to the air outlet upper surface 200 as shown in FIG. The cold air discharged from the blower outlet 4 is cooled and dehumidified by the upstream indoor heat exchanger 5, and therefore has a lower temperature and a higher density than the surrounding air, and flows downward. To be lifted. On the other hand, the air outlet upper surface 200 is guided forward by the front upper airflow direction plate 12 and the front auxiliary airflow direction plate 15 provided on the arm 16 to prevent the flow from being dissipated by the enlarged flow path at the air outlet 4 outlet. To guide the cold air.

  Here, the effect of using this embodiment with respect to the flow around the convex portion 14 provided at the outlet end of the outlet 4, the front auxiliary wind direction plate 15, and the front vertical wind direction plate 12 is shown in FIG. This will be described with reference to a) and (b). FIG. 8A shows the periphery of the outlet 4 when the outlet 4 has no convex portion 14 at the outlet end, and FIG. 8B shows the case where the convex portion 14 is provided at the outlet 4 outlet end of this embodiment. Show. In FIG. 8A, there is a gap between the outlet end of the outlet 4 and the rear end of the front auxiliary wind direction plate 15 for operating the wind direction plate. When the cold air flowing through the outlet 4 (blow air flow (cold air) 63) passes through this gap, part of the flow flows out, the flow velocity decreases at the outlet end of the outlet 4, and the outlet on the opposite side of the air passage A region X that is easy to mix with the ambient air flow 61 is formed near the end of the four outlets. The ambient air flow 61 is highly humid than the cooled and dehumidified cold air (blow air flow (cool air) 63), and when these are mixed, dew condensation occurs on the surface of the outlet 4 outlet end.

  On the other hand, in FIG. 8B, the gap described above is narrowed by the convex portion 14, so that the flow that flows out decreases, and further, the flow path shape is smoothed by the convex portion, so that part of the flow flows out. However, the flow velocity does not decrease, and it becomes difficult to mix with the flow 61 of the surrounding air, and the region X becomes small. As a result, condensation on the surface of the outlet end portion of the outlet 4 can be prevented.

  Further, the front auxiliary wind direction plate 15 is horizontal with respect to the floor, and is provided at an angle at which the extension line on the front end side connecting the front and rear ends intersects the front vertical wind direction plate 12 with respect to the front vertical wind direction plate 12. As a result, the cold wind does not immediately go downward, but it travels throughout the room and keeps the room at a comfortable temperature and humidity.

  Next, the state of the front up / down wind direction plate 12 and the rear up / down wind direction plate 13 in the upward wind direction will be described with reference to FIG. FIG. 9 is an enlarged view 100 of the air outlet in the vicinity of the air outlet 4 in FIG. 2. The upper front up / down wind direction plate 12 and the rear up / down air direction plate 13 are rotated to a position of extremely weak cooling or heating operation.

  During the actual operation, as shown in FIG. 9, the front vertical wind direction plate 12 is slightly upward, and the rear vertical wind direction plate 13 is substantially closed. As a result, a part of the blown air (the blown air flow (weak cold air or warm air) 71) becomes extremely weak wind (the blown air flow (weak cold wind or hot air) 72) and diffuses softly upward in the room. And perform weak cooling or heating. Furthermore, maintenance of the air conditioner such as drying operation of the heat exchanger and deodorizing operation inside the air conditioner is performed by performing a short circuit operation in which the blown wind is immediately sucked from the upper suction unit 2 and the front suction unit 3. It is also possible to perform the operation.

  Next, the state of the front vertical wind direction plate 12 and the rear vertical wind direction plate 13 during the heating operation will be described with reference to FIG. FIG. 10 is an enlarged view 100 of the air outlet near the air outlet 4 in FIG. 2, but the front vertical air direction plate 12 and the rear vertical air direction plate 13 are rotated to the heating operation position.

  When the air conditioner is operated for heating, the front upper and lower wind direction plates 12 and the rear upper and lower wind direction plates 13 are used in directions almost perpendicular to each other as shown in FIG. The warm air (blow air flow (warm air) 81) discharged from the outlet 4 has a lower density than the ambient air, and therefore tends to float upward. However, it is guided downward (blowing air flow (warm air) 82) by the front vertical wind direction plate 12 and the rear vertical wind direction plate 13. At this time, the front vertical wind direction plate 12 and the front auxiliary wind direction plate 15 provided on the arm 16 hold down the warm air (blowing air flow (warm air) 81) and move downward (blowing air flow (warm air) 82. ). As a result, the warm air is discharged from the air outlet 4 and does not immediately go upward, but reaches near the floor, warms the feet and makes the room a comfortable environment.

  The operation of the front vertical airflow direction plate 12 and the rear vertical airflow direction plate 13 in each operation mode has been described above. In addition to the above-described operation, the front vertical airflow direction plate 12 and the rear vertical airflow direction plate are appropriately selected according to the user's request. The direction of the wind direction plate 13 can also be changed with a remote controller.

DESCRIPTION OF SYMBOLS 1 Housing | casing 2 Upper suction part 3 Front suction part 4 Outlet 5 Indoor heat exchanger 6 Indoor through-flow fan 7 Front drain tray 8 Rear drain tray 9 Movable panel 10 Panel rotating shaft 11 Panel drive mechanism parts 12 and 12 ' Front vertical wind direction plate 13 Rear vertical wind direction plate 14 Convex portion 15 Front auxiliary wind direction plate 16 Arm 17 Front vertical wind direction plate rotating shaft 57 Front drain plate 61 without convex portion Ambient air flow 63 Blowing air flow (cold air)
71,72 Blowing air flow (weak cold or warm air)
81,82 Blowing air flow (hot air)
100, 101 Air outlet enlarged view 200 Air outlet upper surface

Claims (5)

Equipped with an up-and-down wind direction plate that changes the air blown out from the outlet in the vertical direction,
The up-and-down wind direction plate has a rear up-and-down wind direction plate and a front up-and-down wind direction plate located on the front side of the rear up-and-down wind direction plate
The front vertical wind direction plate is connected to a wind direction plate driving device via an arm,
The center of the rotation axis of the front vertical airflow direction plate is located above the same plane as the upper surface of the outlet ,
The upper surface of the outlet has a convex portion,
During cooling operation, an air conditioner in which a gap between the upper surface of the blower outlet and the front vertical wind direction plate is narrower than a gap between the upper surface of the blower outlet and the front vertical wind direction plate when there is no projection. .   The air conditioner according to claim 1, wherein the front vertical wind direction plate is wider than the air outlet. The distance L1 from the windward end of the front vertical wind direction plate to the center of the rotation axis of the front vertical wind direction plate at the operation stop position, and the position of the front vertical wind direction plate at the position rotated until it contacts the main body lower surface outer shape. The relationship between the windward end and the shortest distance L2 between the upper surface of the air outlet and the same surface is as follows:
L1> L2
2. The air conditioner according to claim 1, wherein a center of the rotation shaft of the front vertical airflow direction plate is located.   2. The air conditioner according to claim 1, wherein the front vertical airflow direction plate and the width of the air conditioner casing in the longitudinal direction are the same.   2. The air conditioner according to claim 1, wherein the front vertical wind direction plate at the operation stop position is located above the same plane as the upper surface of the outlet.