JP6913859B2 - Air conditioner - Google Patents

Description

The present invention relates to an air conditioner provided with vertical wind direction changing blades.

Generally, in an air conditioner, the vertical wind direction changing blades are moved up and down to change the direction of air to cool or heat the room, but the vertical wind direction changing blades are liable to cause dew condensation during cooling. Therefore, dew condensation prevention measures are taken to prevent dew condensation (see, for example, Patent Document 1).

FIG. 20A shows the air conditioner described in Patent Document 1, which is a heat exchanger in which the vertical wind direction changing blades 102 provided at the outlet 101 of the main body 100 are pivotally supported in the outlet region. The cold air that has exchanged heat in 103 flows through both the upper and lower surfaces of the upper and lower wind direction changing blades 102 to prevent dew condensation.

Further, FIG. 20B shows a dew condensation prevention configuration of the vertical wind direction changing blades described in paragraph 0005 of Patent Document 1, and this configuration is such that the vertical wind direction changing blades 112 are formed in a hollow tubular shape to change the vertical wind direction. The temperature difference between the upper and lower surfaces of the blade 112 is reduced to prevent dew condensation.

Japanese Unexamined Patent Publication No. 2014-122750

However, according to the configuration of Patent Document 1 (a), since the vertical wind direction changing blade 102 is pivotally supported in the air outlet region of the air outlet 101, it serves as a blower resistor and the vertical wind direction changing blade 102 is a rear guider. The shape is not located on the extension of 105, and the rectifying effect of the vertical wind direction changing blade 102 is also deteriorated. Therefore, there is a problem that the air blowing performance of the air blown out from the outlet 101 deteriorates and a large air volume cannot be generated, and it is difficult to quickly and effectively cool or heat the air by the large air volume.

Further, in the hollow blade system configuration of Patent Document 1 (b), since the vertical wind direction changing blade 112 is made hollow by joining two parts on the upper and lower surfaces, dew condensation can be prevented, but Patent Document 1 Compared to a single piece of vertical wind direction changing blades as shown in (a), extra material costs and joining steps are required, and the weight of the vertical wind direction changing blades 112 increases, so a drive source for a motor or the like that drives them. There was a problem that it would lead to a significant cost increase, such as the need to increase the capacity of the engine or increase the torque by attaching a gearbox.

Among the above-mentioned problems, the problem of deterioration of the ventilation performance is as described in Japanese Patent Application Laid-Open No. 2014-196882 shown in FIG. This can be solved by arranging the changing blade 122 on the extension line of the rear guider 105. This is because the vertical wind direction changing blade 122 is located on the extension line of the rear guider 105 so that the rectifying effect and the diffuser function of the vertical wind direction changing blade 122 are maximized, and the ventilation performance is greatly improved and improved.

However, in this case, since it is difficult to allow cold air to flow along the lower surface of the vertical wind direction changing blade 122, the vertical wind direction changing blade 122 must be formed in a hollow tubular shape in order to prevent dew condensation. b) The problem of cost increase as described will remain.

The present invention has been made in view of these points, and provides a high-quality, high-performance air conditioner capable of preventing dew condensation on the vertical wind direction changing blades, suppressing a decrease in air volume, and increasing the air volume. The first purpose is to prevent dew condensation even when the decrease in air volume is suppressed, and to obtain an inexpensive, high-quality, high-performance air conditioner.

In order to achieve the first object, the present invention has a main body, a heat exchanger provided in the main body, a fan that blows air exchanged by the heat exchanger, and a blower that guides the air from the fan. The path, the air outlet that blows out air from the air passage, the vertical air direction changing blades provided at the air outlet, the link mechanism that pivotally supports the vertical air direction changing blade, and the vertical air direction change via the link mechanism. The link mechanism includes a driving means for driving the blades in the vertical direction and a control unit for controlling the driving means, and the link mechanism has a shaft so that the vertical wind direction changing blades can rotate up and down with the inside of the outlet region of the outlet as a shaft fulcrum. In addition to supporting the blades, the shaft fulcrum of the vertical wind direction changing blades can be displaced so that the vertical wind direction changing blades can be set on the rear guider extension line of the air passage.

As a result, the vertical wind direction changing blade is usually rotated with its shaft fulcrum located in the air outlet region, and the air after heat exchange flows through the upper and lower surfaces of the vertical wind direction changing blade to prevent dew condensation. Moreover, if the shaft fulcrum of the vertical wind direction changing blade is displaced, the vertical wind direction changing blade can be positioned on the rear guider extension line of the air passage to exert a high rectifying effect, improve the air blowing performance, and increase the air volume. It is possible to realize air conditioning such as cooling with a large air volume.

The present invention provides a high-quality, high-performance air conditioner capable of preventing dew condensation on the vertical wind direction changing blades and at the same time suppressing a decrease in air volume to improve air blowing performance and realize air conditioning with a large air volume. be able to.

A perspective view showing an indoor unit of the air conditioner according to the first embodiment of the present invention. Cross section of the indoor unit Cross-sectional view of the indoor unit during cooling operation Cross-sectional view of the indoor unit during large air volume operation Perspective view showing the shaft support components of the main vertical wind direction changing blades provided at the air outlet of the indoor unit. An exploded perspective view of the shaft support component of the same main vertical wind direction changing blade. Perspective view of the link mechanism that pivotally supports the main vertical wind direction changing blades of the indoor unit. An exploded perspective view of the link mechanism The figure for demonstrating the operation of the link mechanism Control block diagram of the main vertical wind direction changing blades of the air conditioner A control flow diagram showing the control of the main vertical wind direction changing blades during large air volume operation of the air conditioner. A control flow diagram showing the control of the main vertical wind direction changing blades in the automatic operation mode of the air conditioner. Cross-sectional view of the indoor unit of the air conditioner when the air outlet is closed A cross-sectional view showing an oblique downdraft mode during cooling operation of the indoor unit of the air conditioner. Cross-sectional view showing the ceiling airflow mode during the cooling operation of the indoor unit of the air conditioner. (A) (b) (c) Cross-sectional view showing the rotation transition of the main vertical wind direction changing blades at the time of shifting to the large air volume operation of the indoor unit of the air conditioner. Cross-sectional view showing the downdraft mode during the heating operation of the indoor unit of the air conditioner. A perspective view showing a shaft support component of a vertical wind direction changing blade provided at an outlet of an indoor unit of an air conditioner according to a second embodiment of the present invention. An exploded perspective view of the shaft support component of the vertical wind direction changing blade. (A) Cross-sectional view showing the outlet configuration in the conventional air conditioner, (b) Cross-sectional view showing the other outlet configurations. Cross-sectional view of the outlet configuration in yet another conventional air conditioner

The first invention is from a main body, a heat exchanger provided in the main body, a fan that blows air exchanged by the heat exchanger, an air passage that guides air from the fan, and the air passage. The vertical wind direction changing blades are driven in the vertical direction via the air outlet, the vertical wind direction changing blades provided at the air outlet, the link mechanism that pivotally supports the vertical wind direction changing blades, and the link mechanism. The link mechanism includes a drive means and a control unit that controls the drive means, and the link mechanism pivotally supports the vertical wind direction changing vanes so as to be vertically rotatable with the inside of the air outlet area of the air outlet as a shaft fulcrum, and the vertical wind direction. The shaft fulcrum of the changing blade is displaced so that the vertical wind direction changing blade can be set on the rear guider extension line of the air passage.

As a result, the vertical wind direction changing blade is usually rotated with its shaft fulcrum located in the air outlet region, and the air after heat exchange flows through the upper and lower surfaces of the vertical wind direction changing blade to prevent dew condensation. Moreover, if the shaft fulcrum of the vertical wind direction changing blade is displaced, the vertical wind direction changing blade can be positioned on the rear guider extension line of the air passage to exert a high rectifying effect, improve the air blowing performance, and increase the air volume. It is possible to realize air conditioning such as cooling with a large air volume.

In the second invention, in the first invention, the control unit has a configuration in which the temperature of the blown air is set to the dew point temperature or higher when the vertical wind direction changing blades are positioned on the rear guider extension line of the air passage.

As a result, when the vertical wind direction changing blades are positioned on the rear guider extension line of the air passage to increase the air volume, the temperature of the blown air is set above the dew point temperature to prevent dew condensation, and a single piece of lightweight, simple and inexpensive vertical wind direction can be prevented. As a changing blade, it is possible to realize air conditioning such as cooling with a large air volume while preventing dew condensation.

A third aspect of the invention is the first or second aspect, wherein the link mechanism includes a drive arm that is rotationally driven around the rotation axis of the drive means and a vertical wind direction changing blade arm that is driven by the drive arm. A link arm for supporting the vertical wind direction changing blade arm is provided, and the link arm is formed in a substantially shape so that one end side portion thereof is pivotally supported by the main body of the air conditioner and the other end side portion is described above. The vertical wind direction changing blade arm is pivotally supported in the middle portion in the longitudinal direction of the vertical wind direction changing blade arm, and the vertical wind direction changing blade arm is rotatably supported around the shaft fulcrum, and the vertical wind direction changing blade arm is the tip portion thereof. Is pivotally supported by the drive arm, and the tip portion of the vertical wind direction changing blade arm is rotated by the drive arm.

As a result, the shaft fulcrum of the vertical wind direction changing blade arm pivotally supported by the link arm can be positioned within the air outlet region of the air outlet as the drive arm rotates, and the downward wind direction changing blade can be rotated, and the vertical wind direction can be rotated. The shaft fulcrum of the changing blade arm can be displaced to position the vertical wind direction changing blade on the extension line of the rear guider, and a simple link mechanism can surely prevent dew condensation and increase the air volume by improving the ventilation performance.

The fourth invention is the third invention, in the link mechanism, the rotation center of the drive arm is X, the axial fulcrum between the drive arm and the tip of the vertical wind direction changing blade arm is Y, and the longitudinal length of the vertical wind direction changing blade arm. Assuming that the axial fulcrum between the middle of the direction and the link arm is Z, the distance between X and Y is A, and the distance between Y and Z is B, B = A × (1.2 to 1. 5).

As a result, the link mechanism facilitates the smooth movement of the shaft fulcrum between the vertical wind direction changing blade arm and the link arm, and increases the downward rotation range of the vertical wind direction changing blade to widen the air conditioning range. It can be a higher quality, higher performance air conditioner.

Fifth invention is the first to fourth inventions, wherein the drive means is directly connected to the drive means by pivotally supporting the blade arm of the vertical wind direction changing blade without passing through the drive arm to the rotation shaft. It is configured so that the vertical wind direction changing blades can be attached.

As a result, it is possible to provide an air conditioner capable of large air volume operation by locating the vertical wind direction changing blades on the extension line of the rear guider and a popular type air conditioner that does not have a large air volume operation function. Two types of air conditioners can be provided reasonably and inexpensively.

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

(Embodiment 1)
The air conditioner according to the first embodiment of the present invention is composed of an outdoor unit and an indoor unit connected to each other by a refrigerant pipe.

FIG. 1 is a perspective view showing an indoor unit of the air conditioner according to the first embodiment, FIG. 2 is a cross-sectional view of the indoor unit, FIG. 3 is a cross-sectional view of the indoor unit during cooling operation, and FIG. 4 is the indoor unit. It is a cross-sectional view at the time of a large air volume operation of.

As shown in FIGS. 1 and 2, the indoor unit 1 according to the present embodiment includes a main body 2 and a front panel 3 that closes the front opening 2a of the main body 2.

Inside the main body 2, as shown in FIGS. 2, 3 and 4, a heat exchanger 5 for heat exchange of indoor air taken in from the upper surface opening 2b through the filter 4 and heat exchanger 5 heat the inside. It is equipped with a fan 6 which is a wind source for blowing the exchanged air into the room.

The fan 6 is, for example, a cross-flow fan, and blows air into the room from an air outlet 8 provided below the main body via an air passage 7 in the main body 2.

Further, the air passage 7 includes a rear guider 9 arranged on the downstream side of the fan 6 to guide the air flow, a stabilizer 10 arranged facing the rear guider 9, and both side walls of the main body 2 (not shown). It is formed by and forms a passage from the downstream side of the fan 6 to the upstream side of the air outlet 8.

Further, the air outlet 8 is provided with vertical wind direction changing blades 11 for changing the air blowing direction up and down. Further, a left / right wind direction changing vane 12 (see FIG. 5) that can change the air blowing direction to the left or right is also provided inside the air outlet 8.

In this example, the vertical wind direction changing blades 11 are above the main vertical wind direction changing blade 11a that changes the blowing direction up and down and also opens and closes the air outlet 8, and when the air outlet is closed. It is composed of an auxiliary vertical wind direction changing blade 11b covered by the main vertical wind direction changing blade 11a, and is configured to rotate in the vertical direction in conjunction with both.

The main vertical wind direction changing blades 11a and the auxiliary vertical wind direction changing blades 11b are axially supported by positioning their upstream end portions within the air outlet region of the air outlet 8, which is the subject of the present invention. The vertical wind direction changing blades are the main vertical wind direction changing blades 11a, and the shaft fulcrums of the main vertical wind direction changing blades 11a are located in the air outlet region of the air outlet 8 and in the air passage 7 by the link mechanism 14 that pivotally supports the main vertical wind direction changing blades 11a. It is configured to be displaced to the position near the tip of the rear guider 9 forming the above.

Hereinafter, the axial support configuration of the main vertical wind direction changing blade 11a by the link mechanism 14 will be described with reference to FIGS. 5 to 9.

FIG. 5 is a perspective view showing a shaft support component of the main vertical wind direction changing blade provided at the air outlet of the indoor unit, FIG. 6 is an exploded perspective view of the shaft support component of the main vertical wind direction changing blade, and FIG. 7 is an exploded perspective view of the shaft support component of the main vertical wind direction changing blade. A perspective view of a link mechanism that pivotally supports the main vertical wind direction changing blades of the machine, FIG. 8 is an exploded perspective view of the link mechanism, and FIG. 9 is a diagram for explaining the operation of the link mechanism.

In FIGS. 5 to 9, reference numeral 15 denotes a blade drive motor that serves as a driving means for rotating the main vertical wind direction changing blade 11a up and down, and is attached to the outlet frame 16 (see FIGS. 6 and 8) of the outlet 8. The rotating shaft 15a penetrates the shaft hole 16a of the air outlet frame 16 and projects into the air outlet 8.

Reference numeral 17 denotes a drive arm driven by the rotary shaft 15a of the blade drive motor 15, which is formed in a substantially L shape, and the root side end thereof is fitted to the rotary shaft 15a of the blade drive motor 15 and connected. It is done.

Reference numeral 18 denotes a vertical wind direction changing blade arm connected to the other end side of the drive arm 17, which is rotationally driven by the drive arm 17. The vertical wind direction changing blade arm 18 is bent at an obtuse angle in the longitudinal direction, and the first pin shaft 18a provided at the tip thereof is fitted into the arm pin shaft hole 17a on the other end side of the drive arm 17. A second pin shaft 18b provided at a bent portion in the middle of the longitudinal direction is fitted to the link arm 19 and is pivotally supported by the link arm 19. The vertical wind direction changing blade arm 18 is integrally molded or integrally attached and fixed to the main vertical wind direction changing blade 11a.

The link arm 19 that pivotally supports the vertical wind direction changing blade arm 18 is formed in a substantially abbreviated shape that bends at an acute angle, and as described above, the link pin shaft hole 19a provided on one end side thereof is used to change the vertical wind direction. The bearing portion 20 is fitted to the second pin shaft 18b of the blade arm 18 to support the shaft, and the link pin shaft 19b provided on the other end side is integrally molded or integrally attached to and fixed to the air outlet frame 16. It is fitted in the bearing hole 20a of the above and is pivotally supported.

As a result, in the link mechanism 14, the link pin shaft hole 19a of the link arm 19 serves as a shaft fulcrum, that is, the center of rotation, and the main vertical wind direction changing blade 11a rotates up and down, and the main vertical wind direction changing blade The shaft fulcrum, which is the center of rotation of 11a, is displaced.

More specifically, the drive arm 17 is rotated by the drive of the blade drive motor 15, and the vertical wind direction changing blade arm 18 is fitted through the arm pin shaft hole 17a at the tip of the drive arm 17 and is pivotally supported via the first pin shaft 18a. Power is added to. When rotational power is applied to the vertical wind direction changing blade arm 18, the vertical wind direction changing blade arm 18 pivotally supports the second pin shaft 18b provided in the middle of the vertical wind direction changing blade arm 18 in the link pin shaft hole 19a of the link arm 19. , The link pin shaft hole 19a of the link arm 19, that is, the second pin shaft 18b in the middle of the vertical wind direction changing blade arm 18 rotates. Further, the link arm 19 that pivotally supports the second pin shaft 18b in the middle of the vertical wind direction changing blade arm 18 has the other end side portion pivotally supported by the bearing portion 20 of the air outlet frame 16, so that the link arm 19 is vertically supported. The second pin shaft 18b in the middle of the wind direction changing blade arm 18, that is, the shaft fulcrum, is displaced in position as the vertical wind direction changing blade arm 18 rotates due to the rotation of the drive arm 17.

Then, in this example, in the link mechanism 14 configured as described above, as shown in FIG. 9, the fitting portion of the drive arm 17 to the rotation shaft 15a, that is, the rotation center of the drive arm 17 is set to X. The distance between X and Y, where Y is the axial fulcrum between the drive arm 17 and the vertical wind direction changing blade arm 18, and Z is the axial fulcrum between the longitudinal direction of the vertical wind direction changing blade arm 18 and the link arm 19. Is A, and the distance between Y and Z is B, B = A × (1.2 to 1.5).

Next, the drive control of the main vertical wind direction changing blades 11a driven by the link mechanism 14 configured as described above will be described with reference to FIGS. 10 to 12.

FIG. 10 is a control block diagram of the main vertical wind direction changing blade, and FIGS. 11 and 12 are control flow diagrams thereof.

In FIG. 10, reference numeral 21 denotes a control unit that operates the link mechanism 14 via the blade drive motor 15 to move the main vertical wind direction changing blade 11a up and down, and air from the blade drive motor 15 that drives the link mechanism 14 and the air outlet 8. The fan motor 22 of the fan 6 that blows out the fan 6 is driven and controlled. This drive control is performed by the control unit 21 based on the outputs from the suction air temperature sensor 23, the blow air temperature sensor 24, and the humidity sensor 25. The control flow is as shown in FIGS. 11 and 12, and will be described in detail later.

Next, the operation and effect of the air conditioner configured as described above will be described with reference to FIGS. 13 to 16 by taking the operation during the cooling operation as an example. In the case of this example, the vertical wind direction control in the air conditioner is performed by the main vertical wind direction changing blade 11a and the auxiliary vertical wind direction changing blade 11b, but the subject of the present invention is the main vertical wind direction changing blade 11a. Since the wind direction is controlled, the operation of the main vertical wind direction changing blades 11a will be described with reference to FIGS. 13 to 16.

13 is a cross-sectional view when the air outlet is closed before the start of operation, FIG. 14 is a cross-sectional view in the oblique downdraft mode during the cooling operation, and FIG. 15 is a cross-sectional view in the ceiling airflow mode during the cooling operation, FIG. 16 (a). ) (B) and (c) are cross-sectional views showing the rotation transition of the main vertical wind direction changing blades at the time of shifting to the large air volume operation of the indoor unit of the air conditioner.

In the air conditioner, when the air outlet shown in FIG. 13 is closed, the air outlet 8 is closed by the main vertical wind direction changing blades 11a, and the vertical wind direction changing blade arm 18 pivotally supported by the link pin shaft hole 19a of the link arm 19. The second pin shaft 18b, that is, the shaft fulcrum Z is located within the air outlet frame area of the air outlet 8.

When the air conditioning operation is started and the blade drive motor 15 is driven, the main vertical wind direction changing blade 11a rotates around the shaft fulcrum Z of the link mechanism 14 to open the air outlet 8 and the operation set by the user. Set to the angle determined by the mode. Then, the fan 6 is driven, and the indoor air is taken into the indoor unit 1 from the upper surface opening 2b through the filter 4.

The taken-in indoor air is heat-exchanged in the heat exchanger 5 to become cold air, which is sucked into the fan 6. The cold air sucked into the fan 6 is guided by the rear guider 9 and the stabilizer 10 of the air passage 7 formed on the downstream side of the fan 6 and blown out from the air outlet 8.

The direction of the cold air blown out from the air outlet 8 is controlled by the main vertical wind direction changing blades 11a of the vertical wind direction changing blades 11, the auxiliary vertical wind direction changing blades 11b, and the left and right wind direction changing blades 12.

FIG. 14 shows the position of the main vertical wind direction changing blade that blows cold air diagonally downward, and FIG. 15 shows the position of the main vertical wind direction changing blade that blows cold air toward the front so that the room is sufficiently cold and the airflow is not directly applied to the user. The cold air from the air passage 7 is changed in a predetermined direction.

At this time, in each case, the link mechanism 14 that pivotally supports the main vertical wind direction changing blade 11a positions the shaft fulcrum Z of the main vertical wind direction changing blade 11a within the air outlet region of the air outlet 8. The cold air from No. 7 flows to the lower surface side as well as the upper surface side of the main vertical wind direction changing blade 11a. This prevents dew condensation from forming on the main vertical wind direction changing blades 11a.

That is, during normal cooling operation, the shaft fulcrum Z of the main vertical wind direction changing blade 11a is positioned within the air outlet region of the air outlet 8 and the main vertical wind direction changing blade 11a is rotated to rotate the main vertical wind direction changing blade 11a. Condensation is prevented by allowing cold air after heat exchange to flow on the upper and lower surfaces.

Next, the operation when operating with a large air volume will be described.

The operation with this large air volume is performed so that the air volume from the fan 6 is maximized by, for example, selecting the large air volume operation mode set in the control unit 21 by the user. If the shaft fulcrum Z of 11a is located in the air outlet region, it becomes an air passage resistor and a large air volume cannot be secured.

However, in the air conditioner of the present embodiment, when the large air volume operation mode is selected and the operation is started, the blade drive motor 15 moves the drive arm 17 of the link mechanism 14 from the normal position shown in FIGS. 14 and 15. Is also rotated further. As a result, as shown in (b) of the rotation transition of the main vertical wind direction changing blades 11a at the time of transition to the large air volume operation shown in FIG. 16, the main vertical wind direction changing blades 11a rotate largely downward and the shaft fulcrum Z becomes As shown in FIG. 16 (c), it moves to and displaces the tip portion of the rear guider 9 forming the air passage 7. Then, the main vertical wind direction changing blades 11a are located on the extension line of the rear guider 9.

Therefore, the main vertical wind direction changing blades 11a are located on the rear guider extension line of the air passage 7, exhibit a high rectifying effect, and greatly improve the air blowing performance. Therefore, compared to the case where the shaft fulcrum Z of the main vertical wind direction changing blade 11a is located in the outlet region of the outlet 8, the performance of the fan 6 can be increased as before, which is quick and effective. Air conditioning can be realized.

Then, in the present embodiment, when the main vertical wind direction changing blade 11a is positioned on the rear guider extension line of the air passage 7, the control unit 21 sets the temperature of the air on the upper and lower surfaces of the main vertical wind direction changing blade 11a to be equal to or higher than the dew point temperature. And. Therefore, the occurrence of dew condensation can be prevented. The operation will be further described with reference to the control flow diagram of FIG.

When the user starts the operation, if the large air volume operation mode is selected (S1-Y), the large air volume operation mode is executed (S2). That is, the main vertical wind direction changing blade 11a described above is positioned on the extension line of the rear guider 9.

Next, the suction air temperature sensor 23 detects the room temperature Ti (S3), the humidity sensor 25 detects the room humidity H (S4), and calculates the dew point temperature Th from the room temperature Ti and the room humidity H (S5). ). Further, the blowout air temperature sensor 24 detects the blowout temperature To (S6), compares the blowout temperature To with the dew point temperature Th, and if the blowout temperature To is equal to or higher than the dew point temperature Th (S7-Y), repeats the above operation. The large air volume operation mode is continued, and when the blowout temperature To becomes the dew point temperature Th or less (S7-N), the normal wind direction control mode is started (S8).

In this way, if the outlet temperature To is above the dew point temperature Th, in other words, if the temperature of the air on the upper and lower surfaces of the main vertical wind direction changing blades 11a is above the dew point temperature, a large air volume operation is performed, and dew condensation occurs during the large air volume operation. Is being prevented. Since dew condensation can be prevented, the main vertical wind direction changing blade 11a does not need to be formed in a hollow shape, and can be made into a single piece and lightweight. Therefore, it is possible to reduce the cost without requiring an increase in the capacity of the blade drive motor 15 or an increase in torque due to the attachment of a gearbox.

Further, FIG. 12 shows a control flow diagram when the user selects the automatic operation mode. Even in this automatic operation mode, a large air volume operation is performed at the start of operation in which the difference between the room temperature and the set temperature is large ( S2), quick and effective air conditioning can be realized.

That is, if the operation is started and the operation is in the automatic operation mode (S11-Y), the room temperature Ti detected by the suction air temperature sensor 23 and the set temperature Ts are compared (S12), and the difference is equal to or greater than a predetermined value. If (S12-Y), the large air volume operation mode is executed. Then, when the blowing temperature To becomes the dew point temperature Th or less (S7-N), the rotation speed of the fan motor 22 is changed and controlled (S13) so that the blowing temperature becomes the dew point temperature or higher, and the process returns to the step (S12). Is repeated to continue the large air volume operation (S2). Then, when the difference between the indoor temperature Ti detected by the suction air temperature sensor 23 and the set temperature Ts becomes equal to or less than a predetermined value (S12-N), the mode shifts to the normal wind direction control mode (S8).

As a result, as described above, it is possible to quickly and effectively bring the indoor environment closer to the set temperature Ts by a large air volume while preventing dew condensation, and to realize comfortable air conditioning.

Further, in the present embodiment, the link mechanism 14 for driving the main vertical wind direction changing blade 11a has the rotation center of the drive arm 17 as X, and the shaft fulcrum between the drive arm 17 and the vertical wind direction changing blade arm 18 as Y. Assuming that the axial fulcrum between the vertical wind direction changing blade arm 18 and the link arm 19 in the longitudinal direction is Z, the distance between X and Y is A, and the distance between Y and Z is B, B = A × (1.2 to 1.5).

As a result, the movement of the shaft fulcrum Z between the vertical direction changing blade arm 18 and the link arm 19 can be made smooth, and the occurrence of prying can be prevented and the operation quality can be improved.

In addition, with the above configuration, the downward rotation range of the main vertical wind direction changing blade 11a can also be increased. For example, during heating or the like, the main vertical wind direction changing blade 11a is greatly downward as shown in FIG. It can be heated in a state of being rotated to. That is, the width of the wind direction change by the main vertical wind direction change blades 11a can be widened to expand the air conditioning range, and a high-quality, high-performance air conditioner can be obtained.

As described above, in the present embodiment, dew condensation can be prevented even during the large air volume operation, but this large air volume operation mode is performed not only during the cooling operation but also during the heating operation. Since the operation is the same as that during cooling, the description thereof will be omitted.

(Embodiment 2)
Next, the air conditioner according to the second embodiment will be described.

FIG. 18 is a perspective view showing a shaft support component portion of the vertical wind direction changing blade provided at the outlet of the indoor unit of the air conditioner according to the second embodiment, and FIG. 19 is an exploded perspective view of the shaft support component portion of the vertical wind direction changing blade. It is a figure.

The air conditioner of the second embodiment is a motor direct connection type main vertical wind direction changing blade (hereinafter, directly connected to the driving means) different from the main vertical wind direction changing blade 11a shown in the first embodiment in the indoor unit shown in the first embodiment. It is configured by mounting 111a (referred to as the mold main vertical wind direction changing blade). That is, the rotary shaft 15a of the blade drive motor 15 is pivotally supported by the vertical wind direction changing blade arm 118 of the main vertical wind direction changing blade 111a directly connected to the driving means without using the driving arm 17, and the main vertical wind direction is changed directly to the driving means. The blade 111a is attached.

As a result, it is possible to provide a popular air conditioner that does not have a large air volume operation function simply by switching the main vertical wind direction changing blade 11a of the first embodiment to the drive means direct connection type main vertical wind direction changing blade 111a. Two different types of air conditioners are available: an air conditioner that can operate with a large air volume by locating the main vertical wind direction changing blades 11a on the extension line of 9, and a popular air conditioner that does not have a large air volume operation function. It can be provided reasonably and inexpensively.

The air conditioner according to the present invention has been described above using the above-described embodiment, but the present invention is not limited thereto, and the scope of the present invention is indicated by the claims. It includes all changes within the meaning and range equivalent to the scope of.

For example, in the present embodiment, the air conditioner in which the indoor unit and the outdoor unit are separated has been described, but these may be integrated.

Further, the vertical wind direction changing blade 11 is exemplified by having the auxiliary vertical wind direction changing blades 11b together with the main vertical wind direction changing blades 11a and 111a, but this may be only the main vertical wind direction changing blades 11a and 111a. The vertical wind direction changing blades referred to in the present invention indicate the main vertical wind direction changing blades 11a and 111a.

As described above, the air conditioner according to the present invention can prevent dew condensation on the vertical wind direction changing blades, suppress the decrease in air volume, improve the ventilation performance, and enable air conditioning with a large air volume. It can be a high-performance air conditioner. Therefore, it can be widely applied to various air conditioners including air conditioners used in ordinary households.

1 Indoor unit 2 Main body 2a Front opening 2b Top opening 3 Front panel 4 Filter 5 Heat exchanger 6 Fan 7 Blower 8 Air outlet 9 Rear guider 10 Stabilizer 11 Vertical wind direction change blade 11a Main vertical wind direction change blade 11b Auxiliary vertical wind direction change Blades 12 Left and right wind direction changing blades 14 Link mechanism 15 Blade drive motor (driving means)
15a Rotating shaft 16 Air outlet frame 16a Shaft hole 17 Drive arm 17a Arm pin shaft hole 17b Arm pin shaft hole 18 Vertical wind direction change blade arm 18a 1st pin shaft 18b 2nd pin shaft 19 Link arm 19a Link pin shaft hole 19b Link Pin shaft 20 Bearing part 21 Control part 22 Fan motor 23 Suction air temperature sensor 24 Blow-out air temperature sensor 24a Inclined surface 25 Humidity sensor 111a Motor direct connection type main vertical wind direction change blade (Drive means direct connection type main vertical wind direction change blade)
118 Vertical wind direction change blade arm

Claims (4)

The main body, the heat exchanger provided in the main body, the fan that blows the air heat exchanged by the heat exchanger, the air passage that guides the air from the fan, and the air outlet that blows out the air from the air passage. A vertical wind direction changing blade provided at the air outlet, a link mechanism that pivotally supports the vertical wind direction changing blade, a driving means for driving the vertical wind direction changing blade in the vertical direction via the link mechanism, and the driving. The link mechanism includes a control unit for controlling the means, and the link mechanism pivotally supports the vertical wind direction changing blades so as to be vertically rotatable with the inside of the air outlet area of the air outlet as a shaft fulcrum, and also provides the shaft fulcrum of the vertical wind direction changing blade. By displacement, the vertical wind direction changing blade can be set on the rear guider extension line of the air passage .
The link mechanism includes a drive arm that is rotationally driven around the rotation axis of the drive means, a vertical wind direction changing blade arm that is driven by the drive arm, and a link arm that supports the vertical wind direction changing blade arm. The link arm is formed in a substantially shape, and one end side portion thereof is pivotally supported by the main body of the air conditioner, and the other end side portion is pivotally supported by an intermediate portion in the longitudinal direction of the vertical wind direction changing blade arm. The vertical wind direction changing blade arm is rotatably supported around the shaft fulcrum, and the vertical wind direction changing blade arm is pivotally supported by the drive arm at its tip to support the vertical wind direction changing blade. An air conditioner in which the tip of the arm is rotated by the drive arm. The air conditioner according to claim 1, wherein the control unit has a configuration in which the temperature of the blown air is equal to or higher than the dew point temperature when the vertical wind direction changing blades are positioned on the rear guider extension line of the air passage. In the link mechanism, the center of rotation of the drive arm is X, the axial fulcrum between the drive arm and the vertical wind direction changing blade arm is Y, and the axial fulcrum between the vertical direction changing blade arm and the link arm is Z. The air harmony according to claim 2 , wherein B = A × (1.2 to 1.5), where A is the distance between X and Y and B is the distance between Y and Z. Machine. Driving means according to any one of claims 1 to 3 as its through the drive arm to the rotary shaft and rotatably supporting the blade arms of the upper and lower air direction changing blade thereby enabling mounting the vertical air direction changing blade configuration Air conditioner.

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