WO2014199590A1 - Air conditioner - Google Patents

Abstract

In order to provide a high-performance air conditioner in which the amount of blown air is not reduced by the blown air current diffusing in the longitudinal direction of a blade (the horizontal direction relative to the air flow), on at least one end of the blade that controls in the up/down direction the flow of air blown from the blow port, an air blocking member is provided which blocks air that flows along a rear guider from flowing in the longitudinal direction of the blade. By this means, the air blocking member prevents the air flowing from along the rear guider from dispersing to the sides even if said air flows to the downstream portion not covered by the side walls provided on the main body of the air conditioner, thus preventing reduction of the amount of air and making it possible to improve the air blowing performance.

Description

Air conditioner

TECHNICAL FIELD The present invention relates to an air conditioner, and more particularly to an indoor unit with improved air blowing performance.

Air conditioners generally used in homes generally have a large noise source such as a compressor and a vibration source disposed in an outdoor unit in order to suppress indoor noise and vibration, so that noise and vibration are small. The separator type | mold which arrange | positioned the fan, the heat exchanger, etc. in the indoor unit is used. The indoor unit configured in this way is installed on a wall surface or the like in the room to perform an air conditioning operation so that the room has a desired temperature. The outdoor unit and the indoor unit are mechanically and electrically connected to each other by the refrigerant pipe and the control wiring, and perform the air conditioning operation in cooperation with each other.

The indoor unit of the air conditioner is provided with an outlet for blowing out the temperature-controlled air into the room, and the outlet is provided with a wind direction changing means for changing the direction of the air to be blown out. ing. As the wind direction changing means, in order to send out the air blown out from the air outlet toward the desired region in the room, the up and down wind direction changing vanes which change the flow of the air blown out from the air outlet in the vertical direction There is used a wind direction changing blade constituted by a left and right wind direction changing blade for changing the flow of blown air in the left and right direction.

For example, in order to increase the amount of air blown out from the air outlet, the up and down air direction changing blades in the conventional air conditioner are disposed on the extension of the rear guider that constitutes the lower part of the air outlet, There is one that is configured (see, for example, Patent Document 1).

Japanese Patent Application Laid-Open No. 09-287807

However, in the above-described conventional configuration, the air flowing out from the rear guider to the up and down wind direction change vanes is not covered by the side walls as it extends downstream from the portion covered by the side walls provided on both sides of the air conditioner main body. The pressure drops sharply. Then, there is a problem that air is diffused in the longitudinal direction (lateral direction with respect to the flow of the wind) of the up and down wind direction changing blade, and the air volume is reduced.

The present invention solves the above-mentioned conventional problems, and an object of the present invention is to provide an air conditioner that prevents the air blown out from the blowout port from being diffused to reduce the air flow rate.

In order to solve the above-mentioned conventional problems, the air conditioner of the present invention comprises a main body having an air inlet and an outlet, a heat exchanger for exchanging heat with air taken from the inlet, and heat exchange using the heat exchanger. A fan for blowing out the air from the air outlet, a rear guider disposed downstream of the fan to guide the flow of air to the air outlet, and a blade for changing the direction of the air flowing along the rear guider up and down The blade is provided downstream of the rear guider in a continuous and rotatable manner with the rear guider, and at least at one end in the longitudinal direction of the blade, the air shield which prevents air flowing along the rear guider from flowing in the longitudinal direction of the blade The member is provided along the short direction of the blade.

Thereby, a blade | wing can be utilized as extension of a rear guider, and ventilation performance can be improved. Furthermore, even if the air flowing out of the rear guider into the blades can flow downstream from the portion covered by the side wall provided in the air conditioner main body, there is no lateral diffusion. As a result, the air flow rate is not reduced, and the air blowing performance can be further improved.

In the air conditioner according to the present invention, a main body having an inlet and an outlet for air, a heat exchanger for exchanging heat with air taken from the inlet, and air exchanged with heat by the heat exchanger from the outlet The fan includes a fan for blowing out, a rear guider disposed downstream of the fan to guide the flow of air to the blowout port, and a blade for changing the direction of air flowing along the rear guider up and down, the blade being of the rear guider An all-noise preventing member is provided downstream of the rear guider continuously and rotatably and at least at one end of the blade in the longitudinal direction to prevent noise generated at the time of blowing along the blade's short direction. It is.

Thereby, a blade | wing can be utilized as extension of a rear guider, and a ventilation performance can be improved. Furthermore, an offensive abnormal sound generated near the outlet of the main body can be prevented.

FIG. 1 is a longitudinal sectional view showing an air conditioner according to Embodiment 1 of the present invention. FIG. 2 is a schematic view showing the air conditioning operation of the air conditioner according to the first embodiment. FIG. 3 is a schematic view showing an operation example of the up and down air direction changing blade at the time of air conditioning operation of the air conditioner in the first embodiment. FIG. 4 is a schematic view showing another operation example of the up and down wind direction changing blade at the time of air conditioning operation of the air conditioner in the first embodiment. FIG. 5 is a schematic view showing still another operation example of the up and down wind direction changing blade at the time of air conditioning operation of the air conditioner in the first embodiment. FIG. 6 is a perspective view showing the lower blade of the air conditioner according to Embodiment 1 for changing the vertical air direction. FIG. 7 is a perspective view showing the lower blade of the up and down air direction changing blade of the air conditioner according to Embodiment 2 of the present invention. FIG. 8 is a perspective view showing the lower blade of the air flow direction changing blade of the air conditioner according to Embodiment 3 of the present invention.

The air conditioner according to the first aspect comprises a main body having an air inlet and an outlet, a heat exchanger which exchanges heat with air taken in from the inlet, and blows out air, which is heat-exchanged by the heat exchanger, from the outlet. A rear guider disposed downstream of the fan to guide the flow of air to the outlet, and a blade for changing the direction of the air flowing along the rear guider, the blade being downstream of the rear guider A shield member is provided continuously and rotatably with the rear guider, and at least one end of the blade in the longitudinal direction is provided with a wind shield member for preventing air flowing along the rear guider from flowing in the longitudinal direction of the blade .

Thereby, a blade | wing can be utilized as extension of a rear guider, and a ventilation performance can be improved. Furthermore, even if the air flowing out from the rear guider into the blades can flow downstream from the portion covered by the side wall of the air conditioner main body, the blades are provided with the wind shield member, so diffusion in the lateral direction (longitudinal direction of the blades) And the air volume does not decrease. As a result, it is possible to further improve the air blowing performance.

In the air conditioner of the second aspect, in particular, in the air conditioner of the first aspect, the air conditioner is disposed adjacent to the inside of the wind shield member at any one end in the longitudinal direction of the blade, A noise preventing member is provided to prevent noise.

As a result, it is possible to prevent the generation of abnormal noise generated at the time of air blowing, and the comfort is improved.

In the air conditioner according to the third aspect, in particular, in the air conditioner according to the first aspect, the wind shielding member decreases in width from the downstream side to the upstream side at the upstream end.

As a result, the shape of the upstream end of the wind shield member is a shape that reduces the pressure loss of the air passage, so that the air blowing performance can be improved.

The air conditioner according to the fourth aspect is, in particular, the air conditioner according to the first aspect, wherein the wind shield member is rotatable in the longitudinal direction of the blade.

As a result, blow-off in the left and right direction can be performed, and comfortable air conditioning can be performed.

An air conditioner according to a fifth aspect comprises a main body having an air inlet and an outlet, a heat exchanger for exchanging heat with air taken from the inlet, and blowing out the air, which has been heat exchanged by the heat exchanger, from the outlet. A rear guider disposed downstream of the fan for guiding the flow of air to the outlet, and a blade for changing the direction of the air flowing along the rear guider, the blade being downstream of the rear guider An abnormal noise preventing member is provided along the short direction of the blade, which is provided continuously and rotatably with the rear guider, and which prevents abnormal noise generated at the time of blowing air, at at least one end in the longitudinal direction of the blade There is.

Thereby, a blade | wing can be utilized as extension of a rear guider, and a ventilation performance can be improved. Furthermore, abnormal noise generated at the time of blowing can be prevented, and comfortable air conditioning can be realized.

Hereinafter, embodiments of the present invention will be described with reference to the drawings. The present invention is not limited by the embodiments, and includes various air conditioners to which a configuration based on the same technical idea is applied.

Embodiment 1
The air conditioner according to the first embodiment is a so-called separate type air conditioner in which an indoor unit and an outdoor unit are connected to each other by a refrigerant pipe, a control wiring, and the like. The indoor unit and the outdoor unit constitute a heat pump, and the outdoor unit is provided with a compressor. The indoor unit in the air conditioner according to the first embodiment is a wall-mounted indoor unit attached to the wall of the room.

FIG. 1 is a longitudinal sectional view showing a schematic configuration of an indoor unit in an air conditioner according to Embodiment 1 of the present invention, and shows a state at the time of air conditioning operation stop.

As shown in FIG. 1, the indoor unit 1 includes a main body 2 having a front opening 2a and an upper opening 2b serving as an air intake, and an air outlet 2c for blowing out heat-exchanged air, and a front surface of the main body 2 A movable front panel 3 is provided to open and close the opening 2a. Inside the main body 2, a filter 4 for removing dust contained in the room air, a heat exchanger 5 for heat exchange of the taken-in room air, and a filter 4 taken from the front opening 2a and the top opening 2b The indoor air is heat-exchanged by the heat exchanger 5, and a fan 6 which is a cross-flow fan for generating an air flow for blowing out from the outlet 2c into the room is provided. Further, a ventilation passage 10 extending from the downstream side of the fan 6 to the upstream side of the air outlet 2c is disposed on the downstream side of the fan 6 to guide the flow of air, and a stabilizer disposed opposite to the rear guidance 7 11 and both side walls (not shown) of the main body 2. In addition, the term "stabilizer" mentioned above may be referred to as only a member located in the vicinity of the downstream of the fan 6 and having a curved surface shape for stabilizing vortices generated in the vicinity of the front of the fan 6 as a stabilizer. . In this embodiment, a wall portion located on the downstream side of this member and including the upper side of the air flow path of the air transported by the fan 6 is also referred to as a "stabilizer".

Up and down wind direction changing means capable of opening and closing the blowout port 2c to the blowout port 2c for blowing out heat-exchanged air into the room in the air conditioner according to the first embodiment and changing the blowout direction of the air up and down. An up and down wind direction changing blade 8 is provided. Further, inside the air outlet 2c, a left / right wind direction changing blade 9 which is a left / right wind direction changing means capable of changing the blowing direction of the air to the left or right is provided.

In the state at the time of air conditioning operation stop shown in FIG. 1, the front panel 3 closely contacts the main body 2 and closes the front opening 2a, and the up / down wind direction change blade 8 is accommodated inside the blowout port 2c to close the blowout port 2c. doing.

FIG. 2 is a schematic view showing the air conditioning operation of the air conditioner according to the first embodiment. As shown in FIG. 2, the front panel 3 moves in a direction away from the main body 2 by a predetermined distance to open the front opening 2 a.

The up and down wind direction changing blade 8 includes a lower blade 8a, which is an example of a first blade, and an upper blade 8b, which is an example of a second blade provided above the lower blade 8a. The upper and lower wind direction changing blades 8 cooperate with the lower blade 8a and the upper blade 8b to control the blowing direction of the air blown out from the air outlet 2c. The lower blade 8a is configured to rotate by a predetermined angle by the rotation operation of the lower blade drive shaft. The upper blade 8b is configured to rotate in a state of being held substantially parallel to the lower blade 8a by control, for example, and to move toward and away from the lower blade 8a.

A guide mini blade 8c, which is an example of a third blade, is provided on the upper blade 8b of the up and down wind direction changing blade 8. The guide mini blade 8c has a function of generating an air flow to protect the main flow formed by the lower blade 8a and the upper blade 8b. Thus, by providing the guide mini-blades 8c on the upper surface of the upper blade 8b, the mixing of the surrounding air with the main flow is prevented, and the flow attenuation in the main flow is suppressed.

The left and right wind direction changing blade 9 is composed of a plurality of blades, and is controlled so as to change the blowing direction of the air blown out from the blowout port 2c to the left and right direction.

In the above configuration, when the air conditioner starts the air conditioning operation, the front panel 3 separates from the main body 2 by a predetermined distance to open the front opening 2a, and the up / down wind direction changing blade 8 performs the opening operation to blow The outlet 2c is opened. Thus, the fan 6 is driven in a state where the front opening 2a and the air outlet 2c are open, and room air is taken into the interior of the indoor unit 1 through the front opening 2a and the top opening 2b. The room air taken in passes through the filter 4, is heat-exchanged in the heat exchanger 5, and is sucked into the fan 6. The air sucked into the fan 6 and subjected to heat exchange passes through the air passage 10 formed on the downstream side of the fan 6 and is blown out from the air outlet 2c.

When the air from the fan 6 passes through the air passage 10, the air from the fan 6 is guided by the rear guider 7 and the stabilizer 11 disposed downstream of the fan 6 and blown out from the air outlet 2c. The air from the fan 6, which is a cross flow fan, flows along the curved surface of the rear guider 7 provided on the outer periphery of the fan 6, and is blown out from the air outlet 2c.

The blow-off direction of the air blown out from the blowout port 2 c is controlled by the up and down wind direction changing blades 8 and the left and right wind direction changing blades 9. Operations such as angle adjustment of the up and down wind direction changing blades 8 and the left and right air direction changing blades 9 are controlled by a control device (not shown) that controls the air conditioner.

FIGS. 3 to 5 show an operation example of the up and down wind direction changing blade 8 at the time of air conditioning operation in the air conditioner according to the first embodiment, and the rotating operation of the lower blade 8a and the upper blade 8b forming the main flow is shown. FIG.

The upper and lower wind direction changing blades 8 are rotated together with the lower blade 8a by the rotation of the drive shaft for driving the lower blade 8a, and the upper blade 8b is rotated with the lower blade 8a fixed. It is also possible to do this.

The up and down air direction changing blades 8 in the air conditioner according to the first embodiment are provided at the outlet 2c which is the downstream end (downstream end) of the air passage 10, and the air blown out from the outlet 2c is desired smoothly. Can reach the area of In particular, the lower blade 8a is provided at the downstream end (downstream end) of the rear guider 7 and is located at an extended position of the rear guider 7 and functions as a diffuser that exerts a high rectifying effect on the air from the outlet 2c. Have.

FIG. 3 shows an operation example in which the blowout surface 13 of the lower blade 8a is driven to be linearly positioned so as to be substantially continuous with the surface of the downstream end of the guide surface 14 of the rear guider 7 There is. In the operation example shown in FIG. 3, the air from the blowout port 2c is blown out obliquely downward, and shows the state at the maximum air volume. The vertical wind direction changing blade 8 at this time exhibits the function as a diffuser at maximum. In addition, the blowing surface 13 of the lower blade | wing 8a is an upward surface in FIG. 3, and is a surface where the mainstream of the air which blows off from the blower outlet 2c flows along.

FIG. 4 shows an operation example in which the blowout surface 13 of the lower blade 8a is driven so as to be positioned at an obtuse angle with respect to the surface of the downstream end of the guide surface 14 of the rear guider 7. The blowing direction of the air from is substantially horizontal. FIG. 4 shows an operation example during a general cooling operation.

In FIG. 5, the blowout surface 13 of the lower blade 8a is directed vertically downward from the blowout direction of the guide surface 14 of the rear guider 7, that is, the direction of the blowout side extension G extending along 14 of the guide surface. The blowout direction of the air from the blowout port 2c is a substantially downward direction. FIG. 5 is an operation example during the normal heating operation.

In the air conditioner of Embodiment 1 configured as described above, the air blown out from the outlet 2c is diffused to the lower blade 8a of the up and down air direction changing blade 8 in the longitudinal direction of the lower blade 8a, A wind shielding member 12 is provided so that the air blowing performance does not deteriorate.

FIG. 6 is a perspective view showing a state in which the wind shielding member 12 (12a, 12b) is provided on the lower blade 8a of the up and down wind direction changing blade 8. As shown in FIG.

The wind shielding member 12 is provided on both sides of the lower blade 8 a in the direction in which air flows. More specifically, the wind shielding member 12 is formed along the short direction of the lower blade 8a at substantially both end portions in the longitudinal direction of the lower blade 8a. Further, the wind shield member 12 is formed from the lower blade 8a in a direction substantially orthogonal to the surface of the lower blade 8a. The height of the wind shield member 12 (the direction substantially orthogonal to the surface of the lower blade 8a) is larger than the thickness of the maximum thickness of the lower blade 8a.

The wind shield member 12 preferably has a smaller width at the upstream end from the downstream side to the upstream side. This prevents the windshield member 12 from becoming a large resistance when air flows.

The air shielding member 12 is provided on both sides of the lower blade 8a, so that air continuously flowing from the rear guider 7 to the blowing surface 13 of the lower blade 8a leaks to both sides in the longitudinal direction of the lower blade 8a at the maximum air volume. Since the air flows in the downstream direction, the function as the diffuser of the up and down wind direction changing blade 8 is further strengthened. As a result, the air blowing performance is improved, and the input to the motor for driving the fan 6 necessary to realize the same air volume can be reduced, so that energy saving can be realized. Furthermore, the reachability of air in space is also improved. Therefore, comfortable air conditioning can be realized.

The wind shield member 12 may be rotatable in the longitudinal direction of the lower blade 8a. The left and right wind direction changing blades 9 turn the wind shield member 12 in the left and right direction according to the blowoff direction of the air blown out from the blowout port 2 c in the left and right direction. It can prevent that a blowout is disturbed. This enables more comfortable air conditioning.

Moreover, the height of the wind shield member 12 does not necessarily have to be uniform height and uniform width. The height and width of the wind shield member 12 may be changed from the upstream side to the downstream side in consideration of the storability at the time of operation stop or in consideration of further improving the air blowing performance. Further, the wind shielding member 12 may be provided only on one or the other of both the left and right ends of the lower blade 8a.

Second Embodiment
FIG. 7 is a perspective view showing the lower blade 8a of the air flow direction changing blade 8 of the air conditioner according to the second embodiment of the present invention.

The lower blade 8a of this embodiment is provided adjacent to the inside of the wind shield member 12 (12a, 12b) and provided with a noise preventing member 15 for preventing abnormal noise generated during air blowing. It is done.

As in the first embodiment, the air sucked into the fan 6 is guided to the air passage 10 formed on the downstream side of the fan 6 by the rear guider 7 and the stabilizer 11 disposed on the downstream side of the fan 6, And it passes through the ventilation path 10, and is blown out from the blower outlet 2c (refer FIG. 2).

At this time, since the air flow causes friction with the side wall (not shown) formed in the main body 2, the wind speed of the air in the vicinity of the side wall becomes smaller than the other portions due to the friction loss. When air is blown out from the blowout port and discharged to the open area, the pressure drops sharply, and thus air flow turbulence such as unstable air flow or reverse suction (backflow of air) occurs near the side wall where the wind speed is slow. Due to the disturbance of the air flow, an offensive noise is generated, which makes the person in the space using the air conditioner uncomfortable.

However, according to the configuration of the present embodiment, since the noise suppressing member 15 (15a, 15b) functions to suppress the backflow of air in the vicinity of the wind shield member 12, reverse suction is prevented and air turbulence is eliminated. be able to. That is, a high rectification effect can be exhibited with respect to the air from the outlet, and an unpleasant abnormal sound can be suppressed.

Even if the noise suppressing member 15 is disposed in the rear guider 7, the noise suppressing effect can be achieved to a certain extent, but the noise suppressing member 15 provided on the lower blade 8a which is the final end from which air is blown out produces noise. The prevention effect is great. Moreover, when the noise suppressing member 15 is arrange | positioned on the rear guider 7, the noise suppressing member 15 becomes a hindrance of an air flow, and there is concern about the big deterioration of ventilation performance. On the other hand, when the noise suppressing member 15 is provided on the lower blade 8a which is the final end from which the air is blown out, the deterioration of the air blowing performance is minimized.

When the wind shielding member 12 is rotated in the longitudinal direction of the lower blade 8a, the abnormal noise preventing members 15a and 15b also rotate together with the wind shielding members 12a and 12b, and are blown out from the air outlet 2c. It can be prevented from obstructing the blowing direction of the air in the left and right direction.

In addition, an unpleasant abnormal sound may occur only on the left side toward the blower outlet 2c, may occur only on the right side, may occur on both sides, or one may be larger than the other. Therefore, the arrangement of the abnormal noise preventing member 15 may be either the case where both the left and right of the abnormal noise preventing member are required or the case where only one is required.

The noise suppressing member 15 will be described more specifically. The noise suppressing member 15 is formed adjacent to the inside of the wind shielding member 12 along the short direction of the lower blade 8a. And the noise suppressing member 15 is formed in the direction substantially orthogonal to the surface of the lower blade 8a from the lower blade 8a. The height of the noise suppressing member 15 (the direction substantially orthogonal to the surface of the lower blade 8 a) is smaller than the height of the wind shielding member 12. More preferably, the height of the noise suppressing member 15 is smaller than the thickness of the maximum thickness of the lower blade 8a. Moreover, it is preferable that the noise suppressing member 15 increases the width from the upstream side to the downstream side.

Third Embodiment
FIG. 8 is a perspective view showing the lower blade 8a of the air flow direction changing blade 8 in the air conditioner according to the third embodiment of the present invention.

In this embodiment, the lower blade 8a is not provided with the air shielding member 12 (12a, 12b), and only the abnormal noise preventing member 15 (15a, 15b) for preventing an abnormal abnormal sound.

Even in the state where the wind shield member 12 is not present, it is possible to prevent reverse suction or disturbance of air in the vicinity of the side wall of the main body 2. This is particularly useful when the lower blade 8a is disposed close to the air outlet 2c.

In the state where the wind shield member 12 is not provided, it is preferable that the noise suppressing member 15 has one side surface of the noise suppressing member 15 on the same plane as the side surface of the lower blade 8 a.

In addition, although the shape of the noise suppressing member 15 was demonstrated as square pyramid in FIG. 7, FIG. 8, it is not restricted to this shape. As an example of the other shape, the shape of the noise suppressing member 15 may be a triangular weight or a square pole. The noise suppressing member 15 preferably has a width increased from the upstream side to the downstream side, but is not limited thereto. It may be any shape that can prevent reverse suction and air disturbance while preventing the noise reduction member 15 from causing pressure loss in the air passage as much as possible. Further, the left and right noise suppressing members may not have the same shape.

As described above, in the air conditioner according to the present invention, the diffusion of the jetted air flow in the lateral direction is eliminated, the air volume is not reduced, and the air blowing performance is improved. As a result, it becomes possible to blow out the air from the blowout port so as to reach a desired area with high performance, and comfortable air conditioning can be performed. Therefore, it is useful as an air conditioner used in business and home use etc. is there.

1 indoor unit 2 main body 2a front opening 2b top opening 2c air outlet 3 front panel 4 filter 5 heat exchanger 6 fan 7 rear guider 8 up / down wind direction changing blade 8a lower blade 8b upper blade 8c guide mini blade 9 left / right air direction changing blade 10 Ventilation path 11 Stabilizer 12 Wind shield member 13 Air outlet surface 14 Guide surface 15 Noise reduction member

Claims (5)

A body having an air intake and an outlet;
A heat exchanger that exchanges heat with air taken in from the inlet;
A fan for blowing out the air heat-exchanged by the heat exchanger from the outlet;
A rear guider disposed downstream of the fan to guide the flow of air to the air outlet;
And a blade for changing the direction of air flowing along the rear guider.
The blade is provided downstream of the rear guider in a continuous and rotatable manner with the rear guider.
At least one end in the longitudinal direction of the blade is provided with a wind shield member along the lateral direction of the blade that prevents air flowing along the rear guider from flowing in the longitudinal direction of the blade. Air conditioner. The noise suppressing member according to claim 1, further comprising: a noise preventing member disposed adjacent to the inside of the air shielding member at any one end in the longitudinal direction of the blade, for preventing noise generated at the time of air blowing. Air conditioner. The air conditioner according to claim 1, wherein the width of the air shielding member decreases from the downstream side to the upstream side at the upstream end. The air conditioner according to claim 1, wherein the wind shielding member is rotatable in a longitudinal direction of the blade. A body having an air intake and an outlet;
A heat exchanger that exchanges heat with air taken in from the inlet;
A fan for blowing out the air heat-exchanged by the heat exchanger from the outlet;
A rear guider disposed downstream of the fan to guide the flow of air to the air outlet;
And a blade for changing the direction of air flowing along the rear guider.
The blade is provided downstream of the rear guider in a continuous and rotatable manner with the rear guider.
An air conditioner, wherein an abnormal noise preventing member for preventing abnormal noise generated at the time of blowing air is provided along at least one end in the longitudinal direction of the blade along the short direction of the blade.

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