JP2019184091A - Air conditioner - Google Patents

Abstract

To provide an air conditioner capable of suppressing a rustling sound while minimizing a decrease in ventilation performance, smoothing an air flow, and preventing dew / dropping due to intermittent backflow. An indoor fan (6) that sucks air from an inlet (2), an indoor heat exchanger (5) that exchanges heat with the air sucked from the inlet (2), an outlet (9) through which the heat-exchanged air is blown out, and an indoor fan (6). Indoor heat exchange with the indoor unit 1 having a rear guider 7, a stabilizer 8, and a movable portion 7 a provided on the rear guider 7 and / or the stabilizer 8, which is arranged on the downstream side and forms a ventilation path 14 that guides air to the air outlet 9. The control device 15 changes the arrangement position of the movable part 7 a based on the humidity of the air sucked from the suction port 2 and the temperature of the indoor heat exchanger 5. An air conditioner characterized by determining whether or not. [Selection diagram] FIG.

Description

  The present invention relates to an air conditioner.

  A conventional air conditioner of this type includes a heat exchanger, a cross flow fan, a rear casing, and a stabilizer in a box, and a triangular prism is formed in the blowing air passage formed by the rear casing and the stabilizer. The shaped wedge is arranged with its apex facing upstream.

  In other words, by arranging triangular prism-shaped wedges for the air flow blown by the cross flow fan, the axial flow disturbance such as backflow is suppressed, the air flow is rectified, and the rustling noise is suppressed. The flow is made high in static pressure (see, for example, Patent Document 1).

Japanese Patent Application Laid-Open No. 2004-271044

  However, in the configuration of the conventional air conditioner, due to the effect of the wedge, the axial disturbance of the air flow is suppressed, the air flow is rectified to suppress the rustling noise, and the air flow is smooth and intermittent. Although dew condensation and dripping due to the backflow can be prevented, there is a problem that the ventilation resistance of the blowout port is always increased.

  The present invention solves the above-described conventional problems, and suppresses the sound of dripping, smoothes the flow of air, and prevents exposure and dripping due to intermittent backflow while minimizing a decrease in air blowing performance. An object is to provide an air conditioner.

  In order to achieve the above object, an air conditioner according to the present invention includes a suction port, an indoor fan that sucks air from the suction port, a motor that drives the indoor fan, and a room that exchanges heat with the air sucked from the suction port. A heat exchanger, a blower outlet through which the air heat-exchanged by the indoor heat exchanger is blown out, a rear guider that is disposed on the downstream side of the indoor fan and forms a ventilation path that guides air to the blower outlet, the stabilizer, A refrigeration cycle apparatus comprising a rear guider and / or a movable unit provided in the stabilizer, a compressor, the indoor heat exchanger, a decompression device, and an outdoor heat exchanger, and a refrigerant circulating therein, and a control device Whether the control device changes the arrangement position of the movable part based on the humidity of the air sucked from the suction port and the temperature of the indoor heat exchanger. It is characterized in that determining whether.

  By this, by changing the arrangement position of the movable part provided in the stabilizer and / or the rear guider based on the humidity of the air sucked from the suction port and the temperature of the indoor heat exchanger, dew and dripping In the case where the possibility of airflow is large, while suppressing the deterioration of the air blowing performance to the minimum, the noise (surging) can be suppressed, the air flow can be smoothed, and the dew and dripping due to intermittent backflow can be prevented. When the possibility of dew and dripping is small, it is possible to prevent the ventilation resistance at the outlet from becoming large and to save energy.

  ADVANTAGE OF THE INVENTION According to this invention, the air conditioner which can suppress the noise from dripping, suppresses the noise and smoothes the flow of air, and prevents the dew and dripping due to intermittent backflow can be provided while minimizing the deterioration of the air blowing performance.

The longitudinal cross-sectional view which shows schematic structure at the time of setting the movable rear guider of the indoor unit of the air conditioner in Embodiment 1 of this invention to a ventilation path reduced state The longitudinal cross-sectional view which shows schematic structure at the time of setting the movable rear guider of the indoor unit of the air conditioner to the normal state of a ventilation path Diagram of the refrigeration cycle device when the air conditioner is in cooling operation mode or dehumidifying operation mode Diagram of the refrigeration cycle device when the air conditioner is in the heating operation mode The figure which shows the operation | movement judgment of the movable rear guider of the indoor unit of the air conditioner

  According to a first aspect of the present invention, there is provided a suction port, an indoor fan that sucks air from the suction port, a motor that drives the indoor fan, an indoor heat exchanger that exchanges heat with the air sucked from the suction port, and the indoor heat exchanger A blower outlet through which heat-exchanged air is blown out, disposed on the downstream side of the indoor fan, and provided in a rear guider, stabilizer, the rear guider and / or the stabilizer that forms an air passage that guides air to the blower outlet An indoor unit having a movable part, a compressor, the indoor heat exchanger, a decompression device, an outdoor heat exchanger, a refrigeration cycle device in which a refrigerant circulates, and a control device, the control device, It is determined whether or not to change the arrangement position of the movable part based on the humidity of the air sucked from the suction port and the temperature of the indoor heat exchanger. A conditioner.

  By this, by changing the arrangement position of the movable part provided in the stabilizer and / or the rear guider based on the humidity of the air sucked from the suction port and the temperature of the indoor heat exchanger, dew and dripping In the case where the possibility of airflow is large, while suppressing the deterioration of the air blowing performance to the minimum, the noise (surging) can be suppressed, the air flow can be smoothed, and the dew and dripping due to intermittent backflow can be prevented. When the possibility of dew and dripping is small, it is possible to prevent the ventilation resistance at the outlet from becoming large and to save energy.

  In particular, according to a second invention, in the first invention, the indoor heat exchanger temperature detecting means for detecting the temperature of the indoor heat exchanger, and the humidity detecting means for detecting the humidity of the air sucked from the suction port, The control device determines the arrangement position of the movable part when the detection value of the humidity detection means is equal to or greater than a predetermined value and the detection value of the indoor heat exchanger temperature detection means is equal to or less than a predetermined value. It is characterized by changing.

  As a result, when indoor humidity with a high possibility of dew and dripping is high and the temperature of the indoor heat exchanger is low, air pressure is reduced while minimizing the deterioration of the air blowing performance, and air is suppressed. If the indoor humidity is low and the temperature of the indoor heat exchanger is high, the dew and dripping due to intermittent backflow can be prevented and the possibility of dew and dripping is small. It is possible to prevent the ventilation resistance at the air outlet from increasing and to realize energy saving.

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

(Embodiment 1)
The air conditioner in Embodiment 1 of this invention is comprised from the indoor unit 1 and the outdoor unit 58, as shown to FIG. 3, FIG. The indoor unit 1 and the outdoor unit 58 are connected by refrigerant piping and control wiring, and a refrigeration cycle apparatus in which the refrigerant circulates between the indoor unit 1 and the outdoor unit 58 is configured.

  The outdoor unit 58 includes a compressor 51 for circulating the refrigerant by compressing it, an outdoor heat exchanger 53 for exchanging heat between the outdoor air and the refrigerant, a decompression device 54 for reducing the pressure of the refrigerant, and an outdoor heat exchanger 53 for the outdoor air. The parts which constitute the refrigeration cycle device of the outdoor fan 57 and the four-way valve 52 to be sent to are provided.

  The indoor unit 1 is attached to a wall surface in the room. Also, as shown in FIGS. 3 and 4, the refrigeration cycle apparatus changes the flow direction of the refrigerant by switching the four-way valve 52. FIG. 3 shows the cooling operation mode and the dehumidifying operation mode. The flow direction of the refrigerant | coolant at the time of heating operation mode execution is shown.

  FIG. 1 is a longitudinal sectional view showing a schematic configuration in which the movable rear guider 7a of the indoor unit 1 in the air conditioner of Embodiment 1 is set in a reduced ventilation path. FIG. 2 is a longitudinal cross-sectional view showing a schematic configuration in which the movable rear guider 7a of the indoor unit 1 in the air conditioner is set to the normal ventilation path state.

  As shown in FIGS. 1 and 2, the indoor unit 1 includes an upper surface opening that is an air inlet 2 and an air outlet 9 that blows out heat-exchanged air, and includes a front panel 3.

  Inside the indoor unit 1 are a filter 4 for removing dust contained in the room air, an indoor heat exchanger 5 for exchanging heat of the taken room air, and the room air sucked through the filter 4 from the suction port 2. Are exchanged with the indoor heat exchanger 5 to generate an airflow for blowing out the air from the air outlet 9 into the indoor fan 6, a motor (not shown) for driving the indoor fan 6, and these A control device 15 for controlling the operation of these components is provided.

  And the indoor fan 6 and the indoor heat exchanger 5 are components which comprise a refrigeration cycle apparatus.

  In the indoor unit 1, a ventilation path 14 extending from the downstream side of the indoor fan 6 to the upstream side of the air outlet 9 is disposed on the downstream side of the indoor fan 6, and a rear guider 7 that guides the air flow, and the rear guider 7. Is formed by a stabilizer 8 disposed opposite to the inner wall 1 and both side walls (not shown) of the indoor unit 1.

  In the indoor unit 1, the air outlet 9 for blowing the heat-exchanged air into the room is a vertical air direction changing means that opens and closes the air outlet 9 and can change the air blowing direction up and down. A plurality of vertical wind direction changing blades 11 are arranged.

  Left and right wind direction changing blades 13 which are left and right air direction changing means capable of changing the air blowing direction to the left and right are provided in the vicinity of the air outlet 9 of the ventilation path 14 or on the side of the air outlet 9 of the up and down air direction changing blade 11. It has been.

  Furthermore, a movable rear guider 7a, which is a movable part, is disposed at the end of the rear guider 7 on the blow-out side, with the suction side end supported by the rotation support 7c by a drive source (not shown) such as a motor. Is provided. The movable rear guider 7a is a plate-like member arranged up to the vicinity of both side walls (not shown) of the ventilation path 14.

  Further, the movable rear guider 7a is rotated by a driving source (not shown) about the rotation support portion 7c that is the suction side end portion, and the blowing side end portion of the movable rear guider 7a toward the stabilizer 8. It is comprised so that the arrangement area can be changed and the flow-path area of the ventilation path 14 can be changed.

  In FIG. 1, the arrangement position is changed by rotating the blowing side end of the movable rear guider 7 a toward the stabilizer 8 around the rotation support portion 7 c that is the suction side end of the movable rear guider 7 a. It shows the state set to the ventilation path contracted state in which the flow path area of the ventilation path 14 is reduced.

  Further, FIG. 2 shows the rotation support portion 7c, which is the suction side end portion of the movable rear guider 7a, and the blowing side end portion of the movable rear guider 7a is rotated toward the opposite side of the stabilizer 8 to change the arrangement position. The state (initial setting state) in which the movable rear guider 7a and the rear guider 7 are changed to the same plane and set to the normal state of the ventilation path that maximizes the flow path area of the ventilation path 14 is shown.

  FIG. 3 is a diagram of the refrigeration cycle apparatus when the cooling operation mode and the dehumidifying operation mode are executed in the air conditioner of the first embodiment.

  In FIG. 3, the high-pressure gas refrigerant discharged from the discharge port of the compressor 51 flows into the outdoor heat exchanger 53 through the four-way valve 52 and is condensed by exchanging heat with the outdoor air conveyed by the outdoor fan 57. After becoming a high-pressure liquid refrigerant, decompressed by the decompression device 54 and becoming a low-pressure gas-liquid two-phase refrigerant, the refrigerant flows into the indoor heat exchanger 5 and evaporates by exchanging heat with the indoor air conveyed by the indoor fan 6. After becoming a gas refrigerant, it returns to the suction port of the compressor 51 through the four-way valve 52 again.

  The indoor unit 1 is provided with humidity detecting means 31 for detecting the humidity of the indoor air. Further, the indoor heat exchanger 5 is provided with an indoor heat exchanger temperature detecting means 32 to detect the temperature of the indoor heat exchanger 5.

  In the indoor unit 1 of FIGS. 1 and 2, the indoor air taken in from the suction port 2 through the filter 4 is cooled by the indoor heat exchanger 5, passes through the indoor fan 6 that is a cross-flow fan, and then the ventilation path. 14. While cooling the up-and-down air direction changing blade 11 and the left-and-right air direction changing blade 13, the air is sent into the room.

  Here, when the air volume is small and dust / dust is accumulated on the filter 4, surging occurs due to the characteristics of the indoor fan 6, and the moist air not heat-exchanged from the air outlet 9 flows backward, and the indoor fan 6 The air passage 14, the up / down air direction changing blade 11, and the left / right air direction changing blade 13 are cooled to cause condensation on the surface, and in some cases, dripping of water droplets may be caused.

  When the cooling operation mode or the dehumidifying operation mode is executed, the air volume is as small as less than a predetermined value, the detection value of the humidity detection means 31 is not less than the predetermined value, and the detection value of the indoor heat exchanger temperature detection means 32 is not more than the predetermined value. In this case, the indoor air cooled by the indoor heat exchanger 5 causes the indoor fan 6, the ventilation path 14, the up / down air direction changing blade 11, and the left / right air direction changing blade 13 to become low temperature, which may cause condensation and dripping. Rise.

  At this time, by setting the movable rear guider 7a to the air passage reduced state as shown in FIG. 2, the air passage 14 is reduced, the static pressure is improved, a stable flow field is formed, and the backflow is suppressed. To prevent dew and dripping.

  On the other hand, even when the cooling operation mode is executed, when the air volume is large as a predetermined value or more and the ventilation path 14 does not become the dew point temperature of the air or when there is no possibility of condensation during the heating operation mode, The movable rear guider 7a is rotated to change the arrangement position, set to the normal state of the ventilation path as shown in FIG. 2, and does not increase the ventilation resistance of the air outlet 9, and forms the optimum ventilation path 14 and performance. Improve.

  FIG. 4 is a diagram of the refrigeration cycle apparatus when the heating operation mode is executed in the air conditioner of the first embodiment.

  In FIG. 4, the high-pressure gas refrigerant discharged from the discharge port of the compressor 51 flows into the indoor heat exchanger 5 through the four-way valve 52 and is condensed by exchanging heat with the indoor air conveyed by the indoor fan 6. After becoming a high-pressure liquid refrigerant, decompressed by the decompression device 54 and becoming a low-pressure gas-liquid two-phase refrigerant, the refrigerant flows into the outdoor heat exchanger 53 and evaporates by exchanging heat with the outdoor air conveyed by the outdoor fan 57. After becoming a gas refrigerant, it returns to the suction port of the compressor 51 through the four-way valve 52 again.

  The indoor unit 1 is provided with humidity detecting means 31 for detecting the humidity of the indoor air. Further, the indoor heat exchanger 5 is provided with an indoor heat exchanger temperature detecting means 32 to detect the temperature of the indoor heat exchanger 5.

  In this case, after passing through the indoor heat exchanger 5 and the indoor fan 6, the ventilation path 14, the up / down air direction changing blades 11, and the left / right air direction changing blades 13 become high temperature, so that moist air that has not exchanged heat from the air outlet 9. Even if the air flows backward, there is no possibility of condensation on the surfaces of the indoor fan 6, the air passage 14, the wall surfaces constituting the air outlet 9, the up / down air direction changing blades 11, and the left / right air direction changing blades 13.

  At this time, the movable rear guider 7a is rotated to change the arrangement position, and is set to the normal state of the ventilation path as shown in FIG. To improve the performance.

  FIG. 5 is a flowchart simply representing the operation determination of the movable rear guider 7a.

  As shown in FIG. 5, in the air conditioner of the first embodiment, the control device 15 absorbs indoor air in the indoor heat exchanger 5 when the operation mode is identified by the user from the remote controller 16 to execute the operation. The cooling operation mode or the dehumidifying operation mode, the cooling operation mode in which the indoor air is heated in the indoor heat exchanger 5 or the heating operation mode other than the dehumidifying operation mode is identified, and the indoor air is absorbed in the indoor heat exchanger 5. In the cooling operation mode or the dehumidifying operation mode, the direction is determined in which the movable rear guider 7a is set to the air passage reduced state.

  Next, it is identified whether the air volume mode set in the control device 15 is a mode in which the air volume is greater than or equal to a predetermined value or a mode in which the air volume is less than a predetermined value.

  And the air volume mode set in the control device 15 is a mode (for example, weak setting) in which the air volume is less than a predetermined value, and the detected value of the humidity detecting means 31 is not less than the predetermined value and the indoor heat exchanger temperature. When it is recognized that the detection value of the detection means 32 is equal to or less than the predetermined value, the control device 15 sets the movable rear guider 7a to the air passage reduced state.

  Further, in the heating operation mode other than the cooling operation mode and the dehumidification operation mode, or in the cooling operation mode and the dehumidification operation mode, the air volume mode set in the control device 15 is a mode (for example, a strong air volume) that is equal to or higher than a predetermined value. When it is recognized that the setting is set), the control device 15 sets the movable rear guider 7a to the normal passage state.

  As described above, in the air conditioner according to the first embodiment, the control device 15 determines whether the air volume mode set when the cooling operation mode or the dehumidifying operation mode is executed is a mode in which the air volume is equal to or higher than a predetermined value, or a predetermined value. When the airflow mode set to the control device 15 is a mode in which the airflow mode set to the control device 15 is less than a predetermined value (for example, weak setting) when the airflow mode is less than the predetermined value. In this case, it is determined whether or not to change the arrangement position of the movable rear guider 7a based on the humidity of the air sucked from the suction port 2 and the temperature of the indoor heat exchanger 5.

  And the control apparatus 15 detects the humidity of the air sucked from the suction port 2, the detected value of the humidity detecting means 31 is a predetermined value or more, and the indoor heat exchanger temperature detection for detecting the temperature of the indoor heat exchanger 5 When the detection value of the means 32 is recognized as being equal to or less than the predetermined value, the control device 15 sets the movable rear guider 7a to the reduced ventilation path to prevent condensation and dripping of the ventilation path.

  On the other hand, in the control device 15, the air volume mode set in the control device 15 becomes an air volume of a predetermined value or more even in a heating operation mode other than the cooling operation mode or the dehumidifying operation mode, or in the cooling operation mode or the dehumidifying operation mode. When the mode (for example, strong setting) is recognized, the movable rear guider 7a is set to the normal state of the ventilation path, the ventilation resistance of the air outlet 9 is not increased, the optimum ventilation path 14 is formed, and the performance is improved. It is intended.

  In the first embodiment, the case where the movable part is provided as the movable rear guider 7a and provided only in the rear guider 7 is described. However, the movable part is used as a movable stabilizer (not shown) and the configuration of the movable rear guider 7a is described. Similarly, as a configuration in which a movable support (not shown) is provided with a rotation support portion and rotated around the rotation support portion in the direction of the rear guider 7, it may be provided only in the stabilizer 8 or the movable portion. May be provided in both the rear guider 7 and the stabilizer 8.

  As described above, the air conditioner according to the present invention includes the movable part provided in the stabilizer and the rear guider that form the ventilation path of the indoor unit, the humidity of the air sucked from the suction port, and the indoor heat exchanger. Because it can be moved based on the temperature of the airflow, it can suppress the sound of dripping while minimizing the deterioration of the blowing performance, smooth the air flow and prevent the exposure and dripping due to intermittent backflow. It is useful for air conditioners used in general households.

DESCRIPTION OF SYMBOLS 1 Indoor unit 2 Air inlet 3 Front panel 4 Filter 5 Indoor heat exchanger 6 Indoor fan 7 Rear guider 7a Movable rear guider (movable part)
7c Rotation support (rear guider side)
DESCRIPTION OF SYMBOLS 8 Stabilizer 9 Air outlet 11 Vertical wind direction change blade 13 Left and right wind direction change blade 14 Ventilation path 15 Control device 16 Remote control 31 Humidity detection means 32 Indoor heat exchanger temperature detection means 51 Compressor 52 Four-way valve 53 Outdoor heat exchanger 54 Decompression device 57 Outdoor fan 58 Outdoor unit

Claims (2)

An air inlet, an indoor fan that sucks air from the air inlet, a motor that drives the indoor fan, an indoor heat exchanger that exchanges heat with the air sucked from the air inlet, and air that is heat-exchanged by the indoor heat exchanger A room having an outlet to be blown out, a rear guider disposed on the downstream side of the indoor fan, and forming a ventilation path for guiding air to the outlet, a stabilizer, the rear guider and / or a movable part provided in the stabilizer. Machine,
A refrigeration cycle device comprising a compressor, the indoor heat exchanger, a decompression device, and an outdoor heat exchanger, in which a refrigerant circulates;
A control device,
The control device determines whether or not to change the arrangement position of the movable part based on the humidity of the air sucked from the suction port and the temperature of the indoor heat exchanger. Air conditioner. An indoor heat exchanger temperature detecting means for detecting the temperature of the indoor heat exchanger; and a humidity detecting means for detecting the humidity of the air sucked from the suction port; 2. The air conditioning according to claim 1, wherein when the detected value is equal to or greater than a predetermined value and the detected value of the indoor heat exchanger temperature detecting means is equal to or smaller than the predetermined value, the arrangement position of the movable part is changed. Machine.

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