JP2018151080A - Air conditioner indoor unit and air conditioner - Google Patents

Abstract

An indoor unit and an air conditioner capable of diffusing an airflow blown from a blower outlet using two wind direction plates. A wind direction plate is provided with a pair of an outer wind direction plate 31 and an inner wind direction plate 32 for each outlet. When opening the pair of wind direction plates, the wind direction plates are opened so that the distance between the wind direction plates gradually increases toward the tips 31c and 32e. The control unit is configured to open the pair of wind direction plates so as to expand toward the front end by operating the remote controller or the like, and to open both the wind direction plates 31 and 32 substantially parallel to the front end. Either one is selected to control the opening of the pair of wind direction plates. [Selection] Figure 6D

Description

  The present invention relates to an indoor unit of an air conditioner and an air conditioner.

  As a background art in this technical field, there is JP-A-2015-175549 (Patent Document 1). In this publication, “a first wind direction plate 40 having rotation support shafts 41 and 41 on one long side 34a side of the air outlet 34 and a second wind direction plate 40 having rotation support shafts 53 and 53 on the other long side 34b side. The second wind direction plate 50 is first rotated to a closed position in the air outlet 34 by a predetermined driving means when the air conditioning operation of the air conditioner is stopped, and then the first wind direction plate 40 is provided. Is turned to the closed position, and the second wind direction plate 50 is hidden by the first wind direction plate 40 ”(see summary).

Japanese Patent Laying-Open No. 2015-175549

The technology of Patent Document 1 uses two wind direction plates for one outlet. However, the technique disclosed in Patent Document 1 is that the two wind direction plates are made parallel to each other, or the tips of both are narrowed, and there is a problem that the air blowing range becomes narrow.
Then, this invention makes it a subject to provide the indoor unit and air conditioner which can diffuse the airflow which blows off from a blower outlet using two (a plurality) wind direction boards about each blower outlet.

  In order to solve the above problems, an embodiment of the present invention includes a housing, a suction port that sucks air into the housing, a blowout port that is provided on an outer peripheral portion of the bottom surface of the housing, and blows out air. A heat exchanger that exchanges heat between the air and the refrigerant, a blower fan that sends the air after the heat exchange to the blowout port, and a wind direction plate that is disposed at the blowout port and controls the flow of air blown from the blowout port A pair of the wind direction plates is provided for each of the air outlets, and when opening the pair of wind direction plates, the tip direction of the surfaces receiving the wind of both wind direction plates gradually increases toward the tip. It is the indoor unit characterized by opening so that.

  Another aspect of the present invention includes an outdoor unit and a plurality of indoor units connected to the outdoor unit by refrigerant piping, and each of the indoor units includes a housing and a suction port for sucking air into the housing. A blower outlet that blows out air, a heat exchanger that exchanges heat between the air sucked from the blower outlet and the refrigerant, and sends out the air after the heat exchange to the blower outlet. A blower fan, and a wind direction plate disposed at the air outlet and controlling a flow of air blown from the air outlet, and a pair of the air direction plates are provided for each of the air outlets, and the pair of air direction plates are opened. Is an air conditioner characterized in that the tip directions of the wind receiving surfaces of both wind direction plates open so that the distance between them gradually increases toward the tip.

ADVANTAGE OF THE INVENTION According to this invention, the indoor unit which can diffuse the airflow which blows off from a blower outlet using two (several) wind direction boards about each blower outlet, and an air conditioner can be provided.
Problems, configurations, and effects other than those described above will be clarified by the following description of embodiments.

It is explanatory drawing which shows the system configuration | structure of the air conditioner which is Example 1 of this invention. It is a longitudinal cross-sectional view of the indoor unit which is Example 1 of this invention. It is a plane sectional view of the indoor unit which is Example 1 of the present invention. It is the perspective view which looked at the decorative panel of the indoor unit which is Example 1 of this invention from the lower side. It is a block diagram explaining the control system of the indoor unit which is Example 1 of this invention. It is a longitudinal cross-sectional view of one blower outlet (and an outer wind direction board, and an inner wind direction board) in the indoor unit which is Example 1 of this invention. It is a longitudinal cross-sectional view of one blower outlet (and an outer wind direction board, and an inner wind direction board) in the indoor unit which is Example 1 of this invention. It is a longitudinal cross-sectional view of one blower outlet (and an outer wind direction board, and an inner wind direction board) in the indoor unit which is Example 1 of this invention. It is a longitudinal cross-sectional view of one blower outlet (and an outer wind direction board, and an inner wind direction board) in the indoor unit which is Example 1 of this invention. It is the perspective view which looked at the decorative panel of the indoor unit which is Example 2 of this invention from the lower side. It is a longitudinal cross-sectional view of one blower outlet (and an outer wind direction board, and an inner wind direction board) in the indoor unit which is Example 2 of this invention. It is a longitudinal cross-sectional view of one blower outlet (and an outer wind direction board, and an inner wind direction board) in the indoor unit which is Example 2 of this invention. It is a longitudinal cross-sectional view of one blower outlet (and an outer wind direction board, and an inner wind direction board) in the indoor unit which is Example 2 of this invention. It is a longitudinal cross-sectional view of one blower outlet (and an outer wind direction board, and an inner wind direction board) in the indoor unit which is Example 2 of this invention. It is a longitudinal cross-sectional view of one blower outlet (and an outer wind direction board, and an inner wind direction board) in the indoor unit which is Example 2 of this invention.

  Embodiments of the present invention will be described below with reference to the drawings.

  FIG. 1 is an explanatory diagram showing a system configuration of an air conditioner 1000 according to the present embodiment. The air conditioner 1000 includes an outdoor unit 200, and a plurality of ceiling-embedded indoor units 100 that are connected to the outdoor unit 200 through a refrigerant pipe 300 and electric wiring and are installed on the ceiling of each room. . The air conditioner 1000 performs operations such as cooling and heating by a known refrigeration cycle. The indoor unit 100 is connected to a remote controller 400 that performs air conditioning operations.

  FIG. 2 is a longitudinal sectional view of the indoor unit 100, and FIG. 3 is a plan sectional view thereof. In FIG. 2, an indoor unit 100 includes a housing 1 embedded in a ceiling, and a decorative panel 2 (housing 1) attached to the housing 1 so as to cover the lower surface of the housing and disposed at a ceiling surface position. A part of). The decorative panel 2 is provided with a suction port 2a at the center thereof, and a suction grille 7 is provided at the suction port 2a. Furthermore, the blower outlet 5 provided with the wind direction board 3 (31, 32) is arrange | positioned around the suction grille 7 of the decorative panel 2. As shown in FIG.

  A centrifugal fan 6a and a centrifugal fan (blower fan) 6 including a motor 6b for rotating the centrifugal fan 6a are installed in the housing 1, and the centrifugal fan 6a rotates by operating the motor 6b. Then, as indicated by an arrow 15 in FIG. 2, the indoor air passes through the suction grill (suction port) 3 and the filter 16 installed in the suction grill 7, and the bell mouth installed in the housing 1. 10, the air is sucked into the suction port of the centrifugal fan 6 a, and is discharged from the discharge port of the centrifugal fan 6 a as indicated by the white arrow 18.

  An indoor heat exchanger (heat exchanger) 8 is disposed in the housing 1 so as to surround the centrifugal blower 6, and the air discharged from the centrifugal fan 6 a is passed through the indoor heat exchanger 8. After the heat exchange, as shown by an arrow 17, it passes through the blowout flow path 20 formed by the outer peripheral surface side of the indoor heat exchanger 8 and the inner surface of the housing 1 (the upper inner surface and the side inner surface of the housing 1). Then, the air is blown out into the room from the air outlet 5. A drain pan 9 for receiving dew condensation water generated in the indoor heat exchanger 8 during cooling is installed below the indoor heat exchanger 8.

  The suction grill 7 is configured to be detachable from the decorative panel 2 together with the filter 16, and has a structure in which the filter 16 can be easily cleaned. On the lower surface of the bell mouth 10, an electrical component box 11 containing a control board for controlling the operation of the indoor unit 100 is installed. By opening the suction grill 7, maintenance of the electrical component box 11 can be performed. It has an easily possible structure. The bell mouth 10 is attached to the inner peripheral portion of the drain pan 9, and is configured so that maintenance such as replacement of the centrifugal fan 6a and the motor 6b can be easily performed by opening the suction grille 7 and removing the bell mouth 10. Yes. Reference numeral 28 denotes a heat insulating material provided on the inner surface of the housing 1.

  FIG. 3 is a plan cross-sectional view of the indoor unit 100 shown in FIG. 2 as viewed from the top plate 1a side of the housing 1, and shows a cross section of a portion passing through the discharge port of the centrifugal fan 6a. As shown in FIG. 3, the indoor heat exchanger 8 is configured to surround the centrifugal fan 6a. Reference numeral 22 denotes a machine room for housing piping and auxiliary equipment connected to the indoor heat exchanger 8.

  FIG. 4 is a perspective view of the decorative panel 2 as viewed from below. In FIG. 4, the suction grill 7 is not shown. The decorative panel 2 has a quadrangular shape when viewed from below, and a blower outlet 5 is provided in the vicinity of the outer edge (near each of the four sides of the quadrangular shape). The blower outlet 5 is an elongate opening, and the longitudinal direction thereof is parallel to each side of the square shape of the decorative panel 2.

  Each air outlet 5 is provided with two wind direction plates 31 and 32. A pair of wind direction plates 31, 32 are arranged side by side from the inner side of the lower surface of the decorative panel 2 (the lower surface of the housing) to the outer side of each of the air outlets 5, and the wind direction plate 31 is located outside the wind direction plate 32. Therefore, the wind direction plate 31 will be appropriately referred to as the outer wind direction plate 31. Further, since the wind direction plate 32 is located inside the wind direction plate 31, the wind direction plate 32 will be appropriately referred to as an inner wind direction plate 32. When the outer wind direction plate 31 and the inner wind direction plate 32 are closed, the air outlet 5 is covered. In this example, the lateral width of the outer wind direction plate 31 is longer than that of the inner wind direction plate 32, and the outlet 5 also has a shape that matches the outer wind direction plate 31 and the inner wind direction plate 32. When the outer wind direction plate 31 and the inner wind direction plate 32 are opened, the outer wind direction plate 31 and the inner wind direction plate 32 rotate with their tips directed from the outside to the inside of the decorative panel 2. As shown in FIG. 6A and the like which will be described later, the rotation shafts 31b and 32b of the outer wind direction plate 31 and the inner wind direction plate 32 are in a position biased to the inner side (center side) of the decorative panel 2.

By the way, the structure by which the two wind direction boards 3 (31, 32) are provided in each blower outlet 5 is also indicated by the said patent document 1. FIG.
However, since the technique disclosed in Patent Document 1 makes two wind direction plates parallel or narrows the tips of both, there is a problem that the air blowing range becomes narrow. When the air blowing range becomes narrow, the air blowing speed increases or local air blowing, which causes discomfort (draft feeling) when the wind directly hits the user. Also, smudging cannot be suppressed during cooling.
Therefore, the following describes the outer wind direction plate 31, the inner wind direction plate 32, and the like that can expand the blowing direction during cooling and heating.

  FIG. 5 is a block diagram of a control system for the outer wind direction plate 31 and the inner wind direction plate 32. The control unit 41 is a microcomputer or the like that controls the rotation of the outer wind direction plate 31 and the inner wind direction plate 32. At least two motors 42 and 43 are connected to the control unit 41. Connecting mechanisms 44 and 45 for driving the outer wind direction plate 31 and the inner wind direction plate 32 are connected to the motors 42 and 43, respectively, and the outer wind direction plate 31 and the inner wind direction plate 32 are connected to the connection mechanisms 44 and 45, respectively. It is connected. Thereby, the outer side wind direction board 31 and the inner side wind direction board 32 can be rotationally driven separately. Here, only two motors and coupling mechanisms are shown, but the outer wind direction plates 31 of all the outlets 5 may be rotationally driven by one motor 42 and the coupling mechanism 44, or for each of the outlets 5. A motor 42 and a coupling mechanism 44 may be prepared for each of the outer wind direction plates 31 so that each of the outer wind direction plates 31 for each outlet 5 can be individually driven. The same applies to the inner wind direction plate 32.

6A to 6D are longitudinal sectional views of one outlet 5 (and the outer wind direction plate 31 and the inner wind direction plate 32).
In FIG. 6A, the outer wind direction plate 31 and the inner wind direction plate 32 are supported at the base end portions by the arms 31a and 32a, and the rotating panels 31b and 32b provided on both sides of the arms 31a and 32a, etc. And pivots about the rotation shafts 31b and 32b.

  FIG. 6B shows the case of the cooling operation. FIG. 6C shows the case of heating operation. When the rotation angle of the closed outer wind direction plate 31 and the inner wind direction plate 32 is set to 0 °, the control unit 41 sets the outer wind direction plate 31 and the inner wind direction plate 32 during the heating operation rather than during the cooling operation. Control to increase the rotation angle. In these cases, the outer wind direction plate 31 and the inner wind direction plate 32 open substantially in parallel. Further, when the outer wind direction plate 31 and the inner wind direction plate 32 are opened, the air paths 5 a, 5 b, and 5 c that are partitioned by the outer wind direction plate 31 and the inner wind direction plate 32 are formed as the air path from the outlet 5. The

FIG. 6D shows the state of the outer wind direction plate 31 and the inner wind direction plate 32 when the indoor unit 100 is set to a diffuser mode in which a wide range of blowing is performed with an expanded blowing direction. In this diffuser mode, when the outer wind direction plate 31 and the inner wind direction plate 32 which are a pair of wind direction plates are opened, the distance between the wind direction plates gradually increases from the base end side toward the tips 31c and 32e. Open as you want. This is executed by changing the rotation angles of the motors 42 and 43 under the control of the control unit 41. FIG. 6D shows an example of the cooling operation, but the diffuser mode is also possible during the heating operation.
Switching between the diffuser mode and the normal air conditioning operation can be switched by operating the remote controller 400.

Next, the operational effects of the indoor unit 100 and the air conditioner 1000 of the present embodiment will be described.
According to the indoor unit 100 and the air conditioner 1000 of the present embodiment described above, in the diffuser mode, the distance between the wind direction plates of the outer wind direction plate 31 and the inner wind direction plate 32 gradually increases toward the tips 31c and 32e. Open as you want. Therefore, a wide range of air can be blown by the wind flowing through the air passages 5a, 5b, 5c being in different directions. As a result, the discomfort is reduced because the air is diffused over a wide range even when the wind directly hits the user. Further, during cooling, the degree of wind sticking to the ceiling is reduced, and smudging can be suppressed.

  In addition, the normal cooling / heating operation and the diffuser mode can be switched, for example, by an operation of the remote controller 400, and when it is desired to blow air extensively, it can correspond to each other when it is not. The control in this case is performed by the control unit 41, but a switching operation between a normal air conditioning operation and a diffuser mode may be performed based on sensing by a sensor such as a temperature sensor or a human sensor.

  The second embodiment will be described with a focus on differences from the first embodiment. In the second embodiment, the same members and the like as those in the first embodiment are denoted by the same reference numerals, and detailed description thereof is omitted. FIG. 7 is a perspective view of the decorative panel 2 as viewed from below. Also in FIG. 7, illustration of the suction grille 7 is omitted. In the second embodiment, the lengths of the outer wind direction plate 31 and the inner wind direction plate 32 are substantially the same at each outlet 5. Therefore, it forms a rectangle that matches the shape of the outer wind direction plate 31 and the inner wind direction plate 32 in which the air outlets 5 are also arranged.

8A to 8E are longitudinal sectional views of one outlet 5 (and the outer wind direction plate 31 and the inner wind direction plate 32).
FIG. 8A shows a state in which the outer wind direction plate 31 and the inner wind direction plate 32 are closed. Unlike the first embodiment, the outer wind direction plate 31 and the inner wind direction plate 32 have substantially the same length in the longitudinal direction, and the width in the short direction is greater in the inner wind direction plate 32 than in the outer wind direction plate 31. When the outer wind direction plate 31 and the inner wind direction plate 32 are closed, the outer wind direction plate 31 is hidden behind the inner wind direction plate 32 and cannot be seen from the outside.

The outer wind direction plate 31 is substantially linear in the longitudinal direction (width direction). This is the same as in the first embodiment. On the other hand, in the inner wind direction plate 32, the base end portion 32d has a convex shape on the lower side, and the tail end portion (tip end side) 32c in the width direction is substantially linear in the width direction.
FIG. 8B shows the case of the cooling operation, and the outer wind direction plate 31 and the inner wind direction plate 32 rotate in substantially parallel to the same manner as in the first embodiment.

  FIG. 8C shows the case of the heating operation. Here, the outer wind direction plate 31 and the inner wind direction plate 32 rotate in substantially parallel to the same manner as in the first embodiment. Here, the difference from the first embodiment is that the outer wind direction plate 31 is opened, and the rear end of the outer wind direction plate 31 is close to or in contact with the inner wall 5d of the blower outlet 5 so that the outermost wind passage of the blower outlet 5 is provided. 5a is to be closed.

  FIG. 8D shows a diffuser mode for cooling operation, and FIG. 8E shows a diffuser mode for heating operation. In these cases, when opening the outer wind direction plate 31 and the inner wind direction plate 32 which are a pair of wind direction plates, the wind direction plates are opened so that the distance between the wind direction plates gradually increases toward the tips 31c and 32e, This is executed by the control unit 41 changing the rotation angle between the motors 42 and 43. This is the same as in the first embodiment.

In this case, the difference from the first embodiment is that the opening of the tips 31c and 32e is different between the cooling operation and the heating operation. In the example of FIG. 8D, the tips 31c and 32e are different from each other. The opening is larger in the heating operation than in the cooling operation.
As described above with reference to FIG. 8B and FIG. 8C (or FIG. 6B and FIG. 6C), the rotation angle of the outer wind direction plate 31 and the inner wind direction plate 32 is larger in the heating operation than in the cooling operation. Since the air blowing direction is set downward, the distance of the blown air to the floor (position where the user is) is short. Therefore, by making the opening of the tips 31c and 32e larger than in the case of the cooling operation, it is possible to reduce the blowing speed and reduce the user's discomfort. However, if the air blowing speed is lowered too much, there is a possibility that a short circuit in which the blown air is immediately taken into the housing 1 may occur. Therefore, the air blowing speed that does not cause a short circuit is ensured.
On the other hand, the warm air warmed in the heating operation has a lower air density than the cold air in the cooling operation, and is therefore difficult to reach farther than the cold air. For this reason, in the case of heating operation, the opening between the tips 31c and 32e may be made smaller in the heating operation.

Next, the operational effects of the indoor unit 100 and the air conditioner 1000 of the present embodiment will be described.
Also in the present embodiment, the same operational effects as described in the first embodiment can be obtained. In addition, the present embodiment provides the following operational effects.

  First, in the heating operation of FIG. 8C, when the outer wind direction plate 31 is opened, the rear end of the outer wind direction plate 31 is brought close to or in contact with the inner wall 5d of the blower outlet 5 under the control of the control unit 41. The outermost air passage 5a is closed. Thereby, it can suppress that heating air escapes to the indoor ceiling side.

  Further, in the inner wind direction plate 32, the base end portion 32d in the width direction has a convex shape downward, and the tail end portion 32c is substantially linear in the width direction. Therefore, the inner wind direction plate 32 is unlikely to be the resistance of the wind blown out in the heating operation.

  Further, in the diffuser mode, the control unit 41 controls the opening of the tips 31c and 32e so that the opening in the heating operation is larger than that in the cooling operation. The wind can diffuse widely. On the other hand, by controlling the control unit 41 so that the opening between the tips 31c and 32e is smaller in the heating operation than in the cooling operation, the air blowing distance can be secured while diffusing air. it can.

  Further, in a state where the outer wind direction plate 31 and the inner wind direction plate 32 are closed, the outer wind direction plate 31 is hidden behind the inner wind direction plate 32 and cannot be seen from the outside. Therefore, the design property in the state which closed the outer side wind direction board 31 and the inner side wind direction board 32 can be improved.

In addition, this invention is not limited to an above-described Example, Various modifications are included. For example, the above-described embodiments have been described in detail for easy understanding of the present invention, and are not necessarily limited to those having all the configurations described. Further, a part of the configuration of one embodiment can be replaced with the configuration of another embodiment, and the configuration of another embodiment can be added to the configuration of one embodiment. Moreover, it is also possible to add, delete, and replace other configurations for a part of the configuration of each embodiment.
For example, although a pair of wind direction plates has been described as two wind direction plates, a pair of three wind direction plates may be used.
Moreover, the wind direction board may be divided | segmented in the width direction (longitudinal direction).

DESCRIPTION OF SYMBOLS 1 Housing 2a Inlet 3 Wind direction board 5 Outlet 5a, 5b, 5c Air path 6 Centrifugal blower (blower fan)
7 Suction grill 8 Indoor heat exchanger (heat exchanger)
31 Outer wind direction plate (wind direction plate)
31c Tip 32 Inside wind direction plate (wind direction plate)
32c Tail end part 32d Base end part 32e Tip 41 Control part 100 Indoor unit 300 Refrigerant piping 1000 Air conditioner

Claims (7)

The body,
A suction port for sucking air into the housing;
An air outlet provided on the outer periphery of the lower surface of the housing, for blowing out air;
A heat exchanger for exchanging heat between the air sucked from the outlet and the refrigerant;
A blower fan that sends out the air after the heat exchange to the outlet;
A wind direction plate disposed at the air outlet and controlling the flow of air blown out from the air outlet;
The indoor unit is characterized in that a pair of the wind direction plates are provided for each of the air outlets, and when the pair of wind direction plates are opened, both the wind direction plates are opened so that the interval gradually increases toward the tip.   A control unit that controls the opening of the pair of wind direction plates by selecting one of the pair of wind direction plates opening to expand and the direction of the wind direction plates opening substantially in parallel toward the tip. The indoor unit according to claim 1, further comprising:   The indoor unit according to claim 2, wherein the control unit controls the size of the opening so that it is larger in a heating operation than in a cooling operation.   The indoor unit according to claim 2, wherein the control unit controls the size of the opening so that it is smaller in a heating operation than in a cooling operation. The pair of wind direction plates are arranged side by side from the inside to the outside of the air outlet,
Of the three air paths that are formed by partitioning the air outlet by opening the pair of air direction plates, the outermost air path of the air outlet is closed by opening the air direction plate outside during heating operation. The indoor unit according to claim 1. The pair of wind direction plates are arranged side by side from the inside to the outside of the air outlet,
2. The indoor unit according to claim 1, wherein the inner wind direction plate has a base end portion that is convex downward and a tail end portion that is linear. Outdoor unit,
An air conditioner comprising a plurality of indoor units according to any one of claims 1 to 6 connected to the outdoor unit by refrigerant piping.

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