CN109964041A - Air conditioner - Google Patents

Abstract

The air conditioner of the present invention includes: a suction port; a fan for sucking in air from the suction port; a heat exchanger for exchanging heat with the air sucked in from the suction port; an outlet for blowing out the air heat-exchanged by the heat exchanger; and The rear guide and the stabilizer are arranged on the downstream side of the fan, and form a ventilation path that guides air to the air outlet. A movable portion is provided on at least one of the stabilizer and the rear guide. The control device controls the movable portion to move based on the rotational speed of the fan.

Description

Air conditioner

technical field

The invention relates to an indoor ventilation path of an air conditioner.

Background technique

In the indoor unit of the conventional air conditioner, the lower part of the blower outlet is comprised by the diffuser (diffuser) pivotally supported by the pivot part so that rotation is possible. Furthermore, the front part of the blower outlet is expanded upward, and the opening and closing plate which is openable and closable partitioned between the expansion part and the air passage is pivotally supported by the support shaft part. Moreover, the wind deflector is rotatably supported by the support shaft part at the front end of the expansion part (for example, refer patent document 1).

prior art literature

Patent Literature

Patent Document 1: Japanese Patent Laid-Open No. 2000-146276

SUMMARY OF THE INVENTION

However, in the above-mentioned conventional structure, the movable diffuser increases and decreases the fan rotation speed by simply expanding and contracting the air outlet and by moving upward and downward, that is, it does not correspond to the increase or decrease of the air volume. Therefore, there is a problem that the air blowing performance is lowered.

The present invention is an invention for solving the above-mentioned conventional problems, and an object of the present invention is to provide an air conditioner capable of improving energy efficiency by making a movable part operate in accordance with a change in the rotational speed of the fan, that is, a change in the air volume, wherein the above-mentioned The movable part is provided in the stabilizer and the rear guide which form the indoor ventilation path.

In order to achieve the above object, an air conditioner of the present invention includes: a suction port; a fan for sucking air from the suction port; a motor for driving the fan; a heat exchanger for exchanging heat with the air sucked in from the suction port; The air outlet from which the heat-exchanged air is blown out by the heat exchanger; a rear guide and a stabilizer which are arranged on the downstream side of the fan and form a ventilation passage that guides the air to the air outlet; and a control device. A movable portion is provided on at least one of the stabilizer and the rear guide. The said control apparatus controls so that the said movable part may move based on the rotation speed of the said fan.

Thereby, the movable part provided in at least one of the stabilizer and the rear guide is movable based on the rotational speed of the fan. Therefore, the motor input can be reduced regardless of the change in the air volume obtained from the fan rotation speed. Therefore, energy saving can be achieved.

According to the present invention, it is possible to provide an air conditioner in which a movable portion is provided in a stabilizer and a rear guide that form an indoor ventilation path, in which a movable portion operates in accordance with a change in the rotational speed of the fan, that is, a change in the air volume. Thereby increasing energy efficiency.

Description of drawings

1 : is a figure which shows the outline of the longitudinal cross section when the fan of the indoor unit of the air conditioner in Embodiment 1 of this invention stops.

FIG. 2 is a diagram showing an outline of a vertical cross section when the indoor unit of the air conditioner is rotated (fan rotation speed: NL).

Fig. 3 is a diagram showing an outline of a vertical cross section when the indoor unit of the air conditioner is rotated (fan rotation speed: NM).

FIG. 4 is a diagram showing an outline of a vertical cross section when the indoor unit of the air conditioner is rotated (fan rotation speed: NH).

5 is a diagram showing an outline of a vertical cross section of a movable stabilizer and a movable rear guide of the indoor unit of the air conditioner.

Detailed ways

An air conditioner according to a first aspect of the present invention includes: a suction port; a fan for sucking air from the suction port; a motor for driving the fan; a heat exchanger for exchanging heat with the air sucked in from the suction port; The air outlet from which the heat-exchanged air is blown out; a rear guide and a stabilizer that are arranged on the downstream side of the fan and form a ventilation path that guides the air to the air outlet; and a control device. A movable portion is provided on at least one of the stabilizer and the rear guide. The said control apparatus controls so that the said movable part may move based on the rotation speed of the said fan.

Thereby, the movable part provided in at least one of the stabilizer and the rear guide is movable based on the rotational speed of the fan. Therefore, the motor input can be reduced irrespective of the change in the air volume obtained from the fan rotation speed, so that energy saving can be achieved. In addition, by smoothing the flow of air, turbulence can be reduced and noise reduction can be achieved regardless of changes in the fan rotational speed. Furthermore, by increasing the static pressure to stabilize the flow field, it is possible to prevent intermittent abnormal sounds such as "hula hula" and dew condensation and dripping due to reverse flow.

In the second invention, in particular, in the first invention, the control device controls the movable operation of the movable portion so that when the air volume of the air blown from the outlet is Q and the input to the motor is W, Q /Wmax. Here, "maximum" includes "substantially maximum".

This makes it possible to maximize the energy efficiency of the air volume obtained from the fan rotation speed, so that the motor input can also be minimized (including substantially the smallest). Thereby, energy saving can be effectively achieved.

In the third invention, particularly in the first invention or the second invention, the movable stabilizer provided in the movable portion of the stabilizer is configured such that the rotational speed of the fan is larger than when the rotational speed of the fan is smaller. It is movable so that the said ventilation passage which goes out to the said blower outlet is enlarged from time to time.

Thereby, with the movable stabilizer, the motor input can be reduced according to the magnitude of the air volume obtained from the fan rotation speed, so that energy saving can be achieved.

According to a fourth invention, in any one of the first to third inventions in particular, the movable rear guide provided in the movable portion of the rear guide is such that, compared with the case where the rotation speed of the fan is smaller, When the rotation speed of the said fan is large, the said ventilation path which goes to the said blower outlet is made movable so that it may expand.

Thereby, since the motor input can be reduced according to the magnitude of the air volume obtained from the fan rotation speed by the movable rear guide, energy saving can be achieved.

In the fifth invention, particularly in the third invention, the movable stabilizer is configured such that one end on the upstream side of the ventilation passage is rotatably supported, and the other end on the downstream side of the ventilation passage is movable.

Thereby, when the rotational speed of the fan is high, the movable stabilizer can be moved so as to expand the ventilation passage to the blower outlet than when the rotational speed of the fan is low.

In the sixth invention, particularly in the fourth invention, the movable rear guide is configured such that one end on the upstream side of the ventilation passage is rotatably supported, and the other end on the downstream side of the ventilation passage is movable.

Thereby, when the rotational speed of the fan is relatively high, the movable rear guide can be moved so as to expand the ventilation passage to the air outlet than when the rotational speed of the fan is small.

In the seventh invention, particularly, in any one of the first to fourth inventions, the movable angle of the movable portion is preset by the control device based on the rotation speed of the fan. Thereby, it is possible to provide an air conditioner that can realize energy saving at low cost.

Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. In addition, this invention is not limited by this embodiment.

(Embodiment 1)

The air conditioner according to Embodiment 1 of the present invention is a so-called separate type air conditioner in which an indoor unit and an outdoor unit are connected to each other by refrigerant piping, 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 of the present embodiment is a wall-mounted indoor unit that can be mounted on a wall surface of a room.

FIG. 1 is a longitudinal cross-sectional view showing a schematic configuration of the air conditioner according to Embodiment 1 when the indoor unit operation is stopped. 2 is a longitudinal cross-sectional view showing a schematic configuration of the air conditioner in a state where the fan rotation speed is small (fan rotation speed=NL) at the time of air conditioning operation in the air conditioner. 3 is a longitudinal sectional view showing a schematic configuration in a state where the fan rotation speed (NM) is in the middle (fan rotation speed=NM) during the air conditioning operation in the air conditioner. 4 is a longitudinal cross-sectional view showing a schematic configuration of the air conditioner in a state where the fan rotation speed is large (fan rotation speed=NH) during the air-conditioning operation in the air conditioner. The magnitude relationship of the fan speed is NH>NM>NL.

As shown in FIGS. 1 to 4 , the indoor unit 1 includes: a front opening 2a and an upper opening 2b serving as an air intake port; a main body 2 having an air outlet 2c capable of blowing out heat-exchanged air; and a front panel 3.

Inside the main body 2, a control device (not shown) for controlling the operation of the following components is provided: a filter 4 for removing dust contained in indoor air; The heat exchanger 5; the fan 6 as a cross-flow fan capable of generating an air flow is used for the heat exchange of the indoor air taken in through the filter 4 from the front opening 2a and the upper opening 2b in the heat exchanger 5 It blows out into the room from the blower outlet 2c; and a motor (not shown) capable of driving the fan 6 .

In addition, in the main body 2 of the indoor unit 1, the ventilation passage 10 is formed from the downstream side of the fan 6 to the upstream side of the air outlet 2c, and the rear guides 7, The stabilizer 11 arranged to face the rear guide 7 and both side walls (not shown) of the main body 2 are formed.

In the air conditioner according to the first embodiment, the air outlet 2c for blowing out the heat-exchanged air into the room is provided with an up-and-down air direction changing blade 8 as an up-down air direction changing means, which can open and close the air outlet 2c and open and close the air outlet 2c. Direction Changes the blowing direction of the air.

Left and right wind direction changing blades 9 are provided as left and right wind direction changing means, which can change the blowing direction of the air inside the outlet 2c or in the vicinity of the up and down wind direction changing blades 8 to the left and right. Moreover, the movable rear guide 7a and the movable stabilizer 11a which are movable parts which can perform a rotation operation are respectively provided in a part of the blowing side of the rear guide 7 and the stabilizer 11. The movable rear guide 7a and the movable stabilizer 11a are each movable in accordance with the rotational speed of the fan. However, in the control device, the rotation angles of the movable rear guide 7a and the movable stabilizer 11a are preset in accordance with the respective rotational speeds of the fan 6 . Then, the control device moves the movable rear guide 7a and the movable stabilizer 11a so that the driving rotational speed of the fan 6 becomes a predetermined rotation angle. Specifically, the rotation angle of the movable portion is preset in accordance with each rotation speed of the fan 6 so that the rotation angle of the movable rear guide 7a and the movable stabilizer 11a increases as the rotation speed of the fan 6 decreases. Rotation angle.

As shown in FIG. 2 , when the rotation speed of the fan is low during operation, the movable rear guide 7a and the movable stabilizer 11a are made movable so that the ventilation passage 10 is narrowed. As shown in FIG. 3 , when the rotational speed of the fan is in the middle during operation, the movable rear guide 7a and the movable stabilizer 11a are moved so that the ventilation passage 10 is slightly narrowed. As shown in FIG. 4 , the fan rotation speed is high during operation, and the movable rear guide 7 a and the movable stabilizer 11 a are arranged along the rear guide 7 and the stabilizer 11 so as to be immovable. In this way, the movable stabilizer 11a and the movable rear guide 7a are made movable in accordance with the rotation speed of the fan to form the optimal ventilation path 10 to improve performance.

In addition, when the air volume is small and dust and dust are accumulated in the filter 4, there is a tendency for intermittent abnormal sound such as "hula hula" to be generated. At this time, the ventilation passage 10 is narrowed by the movable rear guide 7a and the movable stabilizer 11a to increase the static pressure and form a stable flow field. Thereby, intermittent abnormal sound can be prevented from being generated.

Moreover, when the air volume is small and dust and dust are accumulated in the filter 4, the air may flow back from the blowing part, and dew condensation and dripping may occur. In this regard, the ventilation passage 10 is narrowed by the movable rear guide 7a and the movable stabilizer 11a to increase the static pressure, form a stable flow field, and suppress the reverse flow to prevent dew condensation and dripping.

In addition, as shown in FIGS. 2 to 4 , at each fan rotation speed NL, NM, and NH, the movable rear guide 7a is controlled and the movable stabilizer 11a is moved so as to maximize the fan efficiency defined by the following equation .

The magnitude relationship of the rotational speed of each fan is NL<NM<NH. When dP is defined as the pressure loss (pressure loss in the air supply passage from the suction port to the air outlet), Q is the air volume from the air inlet in the air supply passage, n is defined as the fan rotation speed (NL, NM, NH), and T is defined as When defined as torque (output supplied from the motor to the fan), the fan efficiency η can be defined by η=(dP×Q)/(n×T)≈Q/W. In addition, the movable rear guides 7 a and the movable rear guide 7 a and the movable stabilizer 11 a are set in advance in accordance with the respective rotational speeds of the fan 6 so that the rotational angles of the movable rear guide 7 a and the movable stabilizer 11 a increase as the rotational speed of the fan 6 decreases. As for the rotation angle of the movable stabilizer 11a, the rotation angles of the movable rear guide 7a and the movable stabilizer 11a at which the fan efficiency η is the largest are preset for a certain rotation speed of the fan 6 .

In this way, at each fan rotation speed NL, NM, and NH, the movable rear guide 7a and the movable stabilizer 11a are movable to maximize the fan efficiency η, so that the motor input can be reduced, resulting in energy saving.

Here, since it is difficult to measure the pressure loss dP and the torque T, it is also possible to simply measure the air volume Q and the motor input W, and to evaluate using η≈Q/W. However, in this case, the fan efficiency η is substantially the largest.

In addition, when the rotational speed is low and dust and dust are accumulated in the filter 4, there is a tendency for intermittent abnormal sound such as "hula hula" to be generated. At this time, the ventilation passage 10 is narrowed by the movable rear guide 7a and the movable stabilizer 11a to increase the static pressure to form a stable flow field. Thereby, intermittent abnormal sound can be prevented from being generated.

In addition, when the rotation speed is low and dust and dust are accumulated in the filter 4, the air may flow backward from the blowing part, and dew condensation and dripping may occur. In this regard, the movable back guide 7a and the movable stabilizer 11a reduce the ventilation passage 10 in the same manner to increase the static pressure to form a stable flow field, suppress the reverse flow, and prevent dew condensation and dripping.

Next, the operation of the movable stabilizer 11 a will be described with reference to FIGS. 2 to 4 . When the fan rotation speed is high (n=NH), as shown in FIG. 4, the movable stabilizer 11a is moved upward, and the ventilation passage 10 is enlarged. When the fan rotation speed is small (n=NL), as shown in FIG. 2 , the movable stabilizer 11a is moved in the downward direction, and the ventilation passage 10 is narrowed. When the fan rotation speed is in the middle (n=NM, NL<NM<NH), as shown in FIG. 3 , the movable stabilizer 11a is moved between FIG. 2 and FIG. 4 to form the ventilation path 10 . At each fan rotation speed NL, NM, NH, the movable stabilizer 11a is made movable so that the fan efficiency is optimized, so that the input can be reduced and energy saving can be realized.

In addition, when the rotation speed is low and dust and dust are accumulated in the filter 4, intermittent abnormal noises such as "hula hula" tend to be generated, and air flows backward from the blowing part, causing condensation and dripping. tendency. The ventilation passage 10 is narrowed by the movable stabilizer 11a to increase the static pressure and form a stable flow field. Thereby, it is possible to prevent dew condensation and dripping while suppressing backflow while preventing the occurrence of intermittent abnormal sound.

Next, the operation of the movable rear guide 7a will be described with reference to FIGS. 2 to 4 . When the rotational speed of the fan is high (n=NH), as shown in FIG. 4 , the movable rear guide 7a is moved downward to expand the ventilation passage 10 . When the fan rotation speed is small (n=NL), as shown in FIG. 2 , the movable rear guide 7a is moved upward to reduce the ventilation passage. When the fan rotation speed is in the middle (n=NM, NL<NM<NH), as shown in FIG. 3 , the ventilation path 10 is formed by moving the movable rear guide 7a between FIGS. 2 and 4 . At each fan rotation speed NL, NM, NH, the movable rear guide 7a is made movable so as to optimize the fan efficiency, so that the input can be reduced and energy saving can be realized.

In addition, when the rotation speed is low and dust and dust are accumulated in the filter 4, intermittent abnormal noises such as "hula hula" tend to occur, and the air flows backward from the blowing part, causing condensation and dripping. tendency. The ventilation passage 10 is narrowed by the movable stabilizer 11a to increase the static pressure and form a stable flow field. Thereby, it is possible to prevent dew condensation and dripping while suppressing backflow while preventing the occurrence of intermittent abnormal sound.

Next, a configuration in which the movable stabilizer 11a can reduce the ventilation passage 10 will be described with reference to FIG. 5 . That is, in the movable stabilizer 11a, the rotation support 11c which is one end of an upstream part is connected with the rotating shaft of an electric motor (not shown). Thereby, the rotary support 11c which is one end of the upstream portion is rotatably supported, and the one end of the downstream portion is movable upward and downward to expand and contract the air passage. FIG. 5 shows a state in which the ventilation passage 10 is operated to shrink, but it can be moved in the direction of expansion.

Next, based on FIG. 5, the structure which can reduce the ventilation passage 10 by the movable rear guide 7a is demonstrated. That is, in the movable rear guide 7a, the rotation support 7c which is one end of an upstream part is connected with the rotating shaft of a motor (not shown). Thereby, the rotary support 7c which is one end of the upstream portion is rotatably supported, and the one end of the downstream portion is movable upward and downward to expand and contract the air passage. FIG. 5 shows a state in which the ventilation passage 10 is operated to shrink, but it can be moved in the direction of expansion.

As described above, the air conditioner in Embodiment 1 achieves energy saving by maximizing the fan efficiency η and reducing the input at the variable fan rotation speeds during the cooling and heating operation. That is, at least one of the movable stabilizer 11a and the movable rear guide 7a is made movable in accordance with the rotational speed of each fan, and the optimum ventilation passage 10 is formed to improve performance.

[Industrial availability]

As described above, the air conditioner according to the present invention operates the movable portion provided in at least one of the stabilizer and the rear guide that form the indoor ventilation path in response to the change in the rotational speed of the fan, that is, the change in the air volume. . Thereby, since energy efficiency can be improved, the air conditioner of this invention can be used as an air conditioner used for business use, general households, etc.

Description of reference numerals

1 Indoor unit (shell)

2 main body

2a Front opening (suction port)

2b Top opening (suction port)

2c Air outlet

3 Front panel

4 filters

5 Heat Exchanger

6 Fans

7 rear guide

7a Movable rear guide

7c Swivel support (rear guide side)

8 Up and down wind direction changing blades

9 Left and right wind direction changing blades

10 Ventilation path

11 Stabilizer

11a Movable Stabilizer

11c Swivel bearing (stabilizer side).

Claims (7)

1. a kind of air conditioner characterized by comprising

Suction inlet；

From the fan of suction inlet sucking air；

Drive the motor of the fan；

The heat exchanger of heat exchange is carried out with the air sucked from the suction inlet；

The blow-off outlet of the air blowout of heat exchange will have been carried out by the heat exchanger；

Be configured at the downstream side of the fan, formed the air is guided to the rear guiding piece of the ventilation path of the blow-off outlet And stabilizer；With

Control device,

At least either of the stabilizer and the rear guiding piece is provided with movable part,

The control device is controlled in the movable mode of movable part described in the revolving speed based on the fan.

2. air conditioner as described in claim 1, it is characterised in that:

The control device controls the movable movement of the movable part, so that in the wind for setting the air blown out from the blow-off outlet Amount is Q, to when the input of the motor is W, and Q/W is maximum.

3. air conditioner as claimed in claim 1 or 2, it is characterised in that:

As the movable stabilizer for the movable part for being set to the stabilizer, so that when smaller with the revolving speed of the fan The widened mode of the ventilation path compare, gone when the revolving speed of the fan is larger to the blow-off outlet is movable.

4. air conditioner according to any one of claims 1 to 3, it is characterised in that:

As be set to it is described after guiding piece the movable part it is movable after guiding piece so that with the revolving speed of the fan compared with The widened mode of the ventilation path gone when hour is compared, the revolving speed of the fan is larger to the blow-off outlet is movable.

5. air conditioner as claimed in claim 3, it is characterised in that:

One end that the movable stabilizer is configured to the upstream side of the ventilation path is rotatably supported, and the ventilation path Downstream side the other end it is movable.

6. air conditioner as claimed in claim 4, it is characterised in that:

The one end for the upstream side that the movable rear guiding piece is configured to the ventilation path is rotatably supported, and the ventilation The other end in the downstream side on road is movable.

7. such as air conditioner according to any one of claims 1 to 6, it is characterised in that:

The movable angle of the movable part is the revolving speed based on the fan and is set in advance in the control device.