JPH05272799A - Indoor unit for air conditioner - Google Patents

Abstract

PURPOSE:To reduce height of a body while procuring a sufficient length of a diffuser passage. CONSTITUTION:Diffuser prolonging members 9a and 9b to prolong a diffusing position are provided at an opening edge of a diffuser 3 in an indoor unit 1, so that they can advance in a diffusing direction. When these diffuser prolonging members 9a and 9b are operated, an advancing mechanism 8 is provided. By this, when an air conditioner is operated, as these diffuser prolonging members 9a and 9b advance, the diffusing position is prolonged in the diffusing direction, and a distance from an indoor fan 6 to the diffusing position A is also prolonged. As a result, recovery of static pressure of diffusing air can be made sufficiently.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an indoor unit of an air conditioner having an outlet for blowing cold air or warm air into a room.

[0002]

2. Description of the Related Art An indoor unit of a wall-mounted air conditioner has an elongated body a as shown in FIGS.
A flow path d that connects the suction port b on the front surface and the upper surface to the air outlet c on the lower front surface is provided inside the room, and the indoor heat exchanger e and the indoor fan f (the crossflow fan) are provided in the flow path d. ) Is provided. Then, the indoor air taken in through the suction port b is heat-exchanged by the indoor heat exchanger e, and the heat-exchanged air (cold air or warm air) is blown out into the room from the air outlet c.

By the way, there is a strong demand for such an indoor unit to be a unit having a small height so that the installation place is not restricted as much as possible. For example, recently, due to the adoption of a large sash window, the wall portion between the window and the ceiling has become quite narrow, so that even this portion can be installed.

However, since the indoor unit is provided with the flow passage d inside the main body a together with various devices, the length of the flow passage d is structurally reduced when the height of the main body a is reduced as described above. Must be short. The conventional indoor unit is
The height dimension is reduced while slightly sacrificing the point of the flow path d.

[0005]

By the way, the static pressure of the indoor air from the indoor fan f remains small when the distance of the blowout flow path of the flow path d (the distance from the indoor fan f to the blowout port c) is short. Is blown into the room, and as this distance becomes longer, the rate of conversion from dynamic pressure to static pressure increases and is blown into the room. However, for the reasons described above, the conventional indoor unit does not sufficiently recover the static pressure of blown air.

For this reason, as shown by reference numeral g in FIG. 11, the blown air is entrained at the vertical end of the outlet c and the widthwise end of the outlet c (only the vertical end is shown). May occur, and dew may be attached to the opening edge of the outlet c during the cooling operation (or the dehumidifying operation). Further, since the static pressure is not sufficiently recovered, the blowout air blown from the blowout port c may have a non-uniform blowout distribution, which may impair comfort. In addition, there is a problem in that the blowing that effectively utilizes the blowing area is impaired. Therefore, there is a demand for an indoor unit that satisfies the height dimension and the length of the flow path d.

The present invention has been made in view of such circumstances, and an object thereof is to secure a sufficient length of the blowout passage while reducing the height dimension of the main body. An object is to provide an indoor unit of an air conditioner that can be used.

[0008]

In order to achieve the above object, an indoor unit of an air conditioner according to the present invention is provided with an indoor unit for extending a blowout position to an opening edge of a blowout port that blows out conditioned air into a room. The present invention is to provide an outlet extension member so as to be capable of advancing from the opening edge in the outlet direction, and to provide an outlet means for advancing the outlet extension member during operation of the apparatus.

[0009]

According to the indoor unit of the air conditioner of the present invention, when the air conditioner is operated, the blowout extension member at the blowout port of the indoor unit advances in the blowing direction.

As a result, the blow-out position is extended in the blow-out direction, and by the extension, the distance from the indoor fan to the blow-out position,
That is, the blowout flow path can be set longer. That is, the static pressure of the blown air can be sufficiently recovered.

Therefore, the problem of the flow path length, which is an obstacle in reducing the height of the indoor unit, can be solved. Moreover, when not operating the air conditioner,
Since the blow-out extension member is retracted toward the main body side, the appearance of the indoor unit is not greatly impaired.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT The first embodiment of the present invention shown in FIGS.
A description will be given based on the embodiment of.

FIG. 5 shows the appearance of an indoor unit 1 which constitutes, for example, a wall-mounted air conditioner, and FIG. 1 shows a cross section of the indoor unit 1. The indoor unit 1 has a small height, and reference numeral 1a in the drawing is a main body of the indoor unit 1 having a horizontally long flat box shape.
Suction ports 2 are provided on the entire front surface and upper surface of the main body 1a, except for a part of the right side of the main body 1a. Further, an elongated air outlet 3 is provided in the lower part of the front surface which leaves a part of the right side portion of the main body 1a.

Inside the main body 1a, a suction port 2 and a blowout port 3 are provided.
A flow path 4 that communicates with and is provided. The flow path 4 is provided with an indoor heat exchanger 5 and an indoor fan 6 composed of a cross flow fan in this order from the upstream side. In addition, 7 is a node of the indoor fan 6 arranged in the lower part of the indoor heat exchanger 5.
It is a drain pan that doubles as the cutting portion 6a.

Although not shown, the indoor heat exchanger 5 is sequentially connected to an expansion valve (pressure reducing device) built in the outdoor unit, an outdoor heat exchanger, a cooling / heating switching four-way valve, and a compressor. Thus, a heat pump type refrigeration cycle capable of cooling and heating operation is configured. By the operation of the refrigeration cycle and the indoor fan 6, the indoor air taken in from the suction port 2 is heat-exchanged by the indoor heat exchanger 5, and cold air or warm air obtained by this heat exchange is blown into the room from the air outlet 3. I'm trying to put it out. Indoor unit 1 with reduced height
The outlet 3 is provided with an extension mechanism 8 for extending the outlet position of the outlet 3 forward.

As shown in FIG. 1 to FIG. 4, the extension mechanism 8 is a blower which opens and closes in an up-and-down manner in a double-opening manner at the upper and lower portions of the opening edge of the blowout opening 3 at the middle of the opening height of the blowout opening 3. It is configured to have walls 9a and 9b (corresponding to the blowing extension member of the present invention). Specifically, the upper outlet wall 9a
Is an elongated first portion corresponding to the opening shape of the upper half of the air outlet 3.
Plate member 10 and the plate member 1 at both ends of the plate member 10.
A pair of elongated second plate members 11, 11 provided at right angles to 0
It has a U shape that is constructed by combining and. The lower outlet wall 9b is composed of an elongated plate member 12 corresponding to the opening shape of the lower half of the outlet 3.

The rear end of the first plate member 10 has a recess 1 for a hinge provided on the entire upper edge portion of the opening of the air outlet 3.
In the inside of 3a, it is rotatably supported by the main body 1a by a hinge 14a in the vertical direction. Similarly, the rear end of the plate member 12 is supported by a hinge 14b so as to be vertically rotatable in a hinge recess 13b provided in the entire lower edge portion of the opening of the air outlet 3. By these, the first plate member 10 and the plate member 12 are supported by the opening edge of the outlet 3 so as to be vertically openable. Then, as shown by the solid line in FIG. 1, the point at which the first plate member 10 and the plate member 12 are rotated forward to a position continuous with the upper and lower wall surfaces 4a and 4b of the flow path 4 is the blowout extension position A, As shown in FIG. 2, the retracted position B is a point where the first plate member 10 and the plate member 12 are rotated to a position where the opening of the outlet 3 is closed.

When the first plate member 10 and the plate member 12 are rotated to the blow-out port extension position A, the recesses 13a and 13b are provided with the inner surface (back surface) of the plate member 10 and 12 and the flow path 4. The upper and lower wall surfaces 4a and 4b are set so as to be flush and continuous with each other. Further, each second plate member 1 of the outlet wall 9a
The sizes of 1 and 11 are the first plate member 10 and the plate member 1.
When the 2 is rotated to the blow-out extension position A, the plate member 10
And a plate member 12 are formed in a band shape that shields an opening formed between the plate member 12 and the plate member 12, and a mouth (a plate and a U-shaped plate) is formed at the blowout extension position A. I am doing it. With such a structure, the outlet walls 9a and 9b are provided so as to be able to advance to the opening edge of the outlet port 3.

One of the second plate members 11, 11, for example, the base side of the inner surface (back surface) of the right plate member 11 has a semicircle having teeth 15a on the outer peripheral portion as shown in FIG. The shaped gear body 15 is attached. Further, a semicircular gear body 16 having teeth 16a on the outer peripheral portion is provided upright on the inner surface portion on the right side of the plate member 12. The gear body 15 and the gear body 16 are meshed with each other so that the rotation of one plate member causes the rotation of the other plate member in synchronization. That is, simply by rotating one plate member, the plate member 10 and the plate member 12 are in the closed state at the retracted position B, and are in the open state (the configuration of the mouth) at the blowout extended position A. ..

Of these, for example, the drive motor is provided at the right end of the hinge shaft constituting the hinge 14a of the plate member 10.
A motor, for example, a pulse motor 17 is attached, and the plate member 10 and the plate member 12 can be opened and closed by driving the motor.

The pulse motor 17 is also connected to a control unit 18 including, for example, a microcomputer and its peripheral equipment. An operation unit 19 is connected to the control unit 18 so that the air conditioner performs a predetermined operation, that is, a cooling operation, a heating operation, a dehumidifying operation, and the like. The control unit 18 has a function of causing each refrigeration cycle device and a device such as a fan attached to the refrigeration cycle device to operate in a predetermined manner according to an operation operation such as “cooling”, “heating”, and “dehumidification” input from the operation unit 19. Is set, and the air conditioner is made to perform a cooling operation, a heating operation, and a dehumidifying operation according to the input operation. Further, the control unit 18 is always set with a motor control function for positioning the plate member 10 and the plate member 12 at the retracted position B. Further, when an operation signal is output from the operation unit 19 to the control unit 18, the plate member 10 and the plate member 12 are blown out to the extended position A.
The motor control function for positioning the
When the operation of the air conditioner is stopped, the plate members 10 and 12 are kept in a good-looking state, and when the air conditioner is operated, the plate members 10 and 12 are advanced to a predetermined blowout extension position A in front of the air outlet 3 (this invention). Equivalent to the means of advancement). Next, the operation of the indoor unit 1 of the air conditioner thus configured will be described.

Here, when the air conditioner is not in operation, the plate members 10 and 12 of the indoor unit 1 are in the retracted position B as shown in FIGS.
At 12, the opening of the air outlet 3 is closed. The end portion of the plate member 11 at the retracted position B penetrates a through hole 4c with a damper (not shown) provided in the upper wall surface 4a of the flow path 4.

In such a state, for example, when performing cooling operation, the operation section 19 is operated to "cooling". Then, a control signal according to the operation information is output from the control unit 18, sets the four-way valve of the refrigeration cycle to the cooling side, and operates the compressor and various fans. This constitutes a cooling cycle in which the refrigerant discharged from the compressor circulates through the four-way valve, the outdoor heat exchanger, the expansion valve, and the indoor heat exchanger.

The control unit 18 also receives a driving signal from the previous operation unit 19 and outputs a control signal to the pulse motor 17. Then, along with the operation of the refrigeration cycle equipment, the pulse motor 17 is controlled and driven. Thereby, the plate member 1
0 is rotated clockwise around the hinge 14a as a fulcrum.
At the same time, this turning force is transmitted from the gear body 15 to the gear body 16 to rotate the plate member 12 counterclockwise. As a result, the plate members 10 and 12 gradually advance toward the blowing direction, and the closed blower outlet 3 gradually opens. When the plate members 10 and 12 advance to the blow-out extension position A as shown in FIG. 1, the pulse motor 17
Is stopped, and a mouth body composed of a U-shaped outlet wall 9a and an outlet wall 9b that shields the opening side of the outlet wall 9a is formed at the outlet extension position A as shown in FIG. .. At this time, the opening of the through hole 4c is closed by a damper (not shown).

As a result, as shown in FIG. 5, the blowing position extends from the original position in the blowing direction. This is
The distance from the indoor fan 6 to the blow-out position, that is, the blow-out flow path, is set longer by the length of the extension.
Then, the cold air obtained by the heat exchange of the indoor heat exchanger 5 is blown out into the room through this elongated blowout flow path.

This means that the height of the indoor unit 1 can be reduced and the length of the blowout passage can be sufficiently secured. That is, the static pressure of the blown air can be sufficiently recovered. Therefore, it is possible to solve the problem of the blowout flow path length, which is an obstacle in promoting the height reduction of the indoor unit 1.

Moreover, when the air conditioner is not in operation, the outlet walls 9a and 9b are arranged in a retracted state with respect to the main body side while closing the opening of the outlet 3, so that the appearance of the indoor unit 1 is also good. It doesn't hurt too much. Needless to say, the same applies to the heating operation and the dehumidifying operation.

In the above embodiment, the outlet walls 9a,
Although the example in which 9b is advanced to the front of the air outlet 3 has been given, the present invention is not limited to this, and the control unit 18 has the same function as the wind direction grill configured to change the vertical wind direction according to the load by the drive from the drive source. Is set according to the heating load and the cooling load.
The directions of the outlet walls 9a and 9b may be changed as shown by the chain double-dashed line in FIG. By doing so, there is an advantage that the blowout walls 9a and 9b for ensuring the length of the blowout flow path can be utilized as a wind direction grill. FIG. 6 shows a second embodiment of the present invention.

The present embodiment shows an example in which there is a wind direction grill 20 which is driven by a drive source (not shown) to change the vertical wind direction according to the load. In this embodiment, the outlet walls 9a, 9a are interlocked with the wind direction operation of the wind direction grill 20.
The direction of b is changed (this point is set by setting the function of changing the vertical wind direction according to the load in the control unit 18). Figure 7
A third embodiment of the present invention will be described.

In this embodiment, each of the outlet walls 9a and 9b is composed of a pair of strip-shaped flat plates 25a and 25b, and is stored on the surface of the wall surface portion of the main body 1a adjacent to the upper and lower edges of the outlet port 3. Recesses 26a and 26b are provided, and flat plates 25a and 25b are provided.
However, the retracted position B is the position stored in each of the recesses 26a and 26b. In the present embodiment, the flat plates 25a and 25b are rotated between the blowout extension position A and the retreat position B by independent drive motors, for example, pulse motors 27a and 27b. .. 8 and 9 show a fourth embodiment of the present invention. The present embodiment shows an example of the structure of the outlet walls 9a and 9b that can be advanced by sliding instead of rotating.

That is, in the present embodiment, the storage openings 30a, 30b are formed in the wall surface portion of the main body 1a adjacent to the upper and lower edges of the air outlet 3.
And storage paths 31a, 31b are provided from the respective storage openings 30a, 30b toward the inside of the main body 1a, and a pair of strip-shaped flat plates in which racks 32 are formed on the upper and lower surfaces in the respective storage paths 31a, 31b. The racks 32a and 32b are slidably stored, and the racks 32 are driven by independent drive motors, for example, pulse motors 33a and 33b, to move the flat plates 32a and 32b to the blow-out extension position A and the retreat position B, respectively. It is designed to slide between. 34a
Indicates a pinion provided on the output shaft of each of the pulse motors 3a and 33b, which meshes with the rack 32.

Even with such driving, the same effect as that of the first embodiment can be obtained. 8 shows a state in which the flat plates 32a, 32b are stored in the storage paths 31a, 31b at the retracted position B, and FIG. 9 shows a state in which the flat plates 32a, 32b are advanced to the blowout extension position A.

In each of the above-described embodiments, the blowout walls 9a and 9b are provided at the upper and lower edges of the blowout port 3, but either one of the blowout wall 9a and the blowout wall 9b may be provided.

[0034]

As described above, according to the present invention,
It is possible to secure a sufficient length of the blowout flow path while reducing the height dimension of the main body. As a result, the static pressure of the blown air can be sufficiently recovered.

Therefore, it is possible to solve the problem of the outlet flow path length, which is an obstacle to the downsizing of the indoor unit. Moreover, when the air conditioner is not in operation, the blow-out extension member is arranged in a retracted state on the body side,
The appearance of the indoor unit will not be greatly impaired.

[Brief description of drawings]

FIG. 1 is a cross-sectional view showing an internal configuration of an indoor unit of a first embodiment of the present invention, together with a structure around a blowout extension member and a state in which the blowout extension member has advanced to a predetermined position.

FIG. 2 is a cross-sectional view showing a state in which the blow-out extension member is retracted from the main body.

FIG. 3 is a perspective view showing the structure of an outlet extension member together with an open state.

FIG. 4 is a perspective view of the same closed state.

FIG. 5 is a perspective view showing the entire indoor unit together with an extended blowing position.

FIG. 6 is a sectional view showing an essential part of a second embodiment of the present invention.

FIG. 7 is a sectional view showing an essential part of a third embodiment of the present invention.

FIG. 8 is a sectional view showing the essential parts of a fourth embodiment of the present invention together with a retracted state.

FIG. 9 is a sectional view showing a state where the same has advanced.

FIG. 10 is a perspective view showing the appearance of an indoor unit of a conventional air conditioner.

FIG. 11 is a cross-sectional view showing the internal configuration of the indoor unit.

[Explanation of symbols]

1a ... Main body, 3 ... Blowout port, 4 ... Flow path, 5 ... Indoor heat exchanger, 6 ... Indoor fan, 9a, 9b ... Blowout wall (blowout extension member), 15,16 ... Gear body, 17 ... Pulse mode 18
... control unit, A ... blowout extension position, B ... retracted position.

Claims (1)

[Claims] 1. An indoor unit of an air conditioner having an outlet for blowing out conditioned air into a room, wherein an opening edge of the outlet is provided for extending a blowing position in the blowing direction from the opening edge. An indoor unit for an air conditioner, which is provided with a blow-out extension member so that the blow-out extension member can be advanced toward the other side, and is provided with a push-out means for advancing the blow-out extension member when the apparatus is in operation.