JPH0569521U - Air conditioner blower - Google Patents

Abstract

(57) [Abstract] [Purpose] It is an object of the present invention to provide a structure of an air blower capable of obtaining a wide blown air flow as necessary by utilizing the characteristics of a cross flow fan and the influence of wind. It is a thing. [Structure] The cross flow fan 2 is provided in the air passage of the main body 1.
In the air conditioner in which the cross-flow fan 2 is divided into a plurality of parts, and the wind direction plate 4 is provided on the outlet side thereof, the cross-flow fan 2 is divided into a plurality of parts. The transmissions 5 and 6 configured to increase the rotational speeds of the left side fan 22 and the right side fan 23 on both sides are provided.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to an air blower for an indoor unit of an air conditioner.

[0002]

[Prior Art]

 As shown in FIG. 2, a conventional blower for an indoor unit of an air conditioner has a cross flow fan 12 integrally formed in a horizontal direction in an air flow path of a main body 11, and is provided at a lower end of a front surface thereof on an outlet side. The bearing frame 13 is provided, and a plurality of left and right wind direction plates 14 are pivotally supported to be swingable.

According to the air blower of the conventional air conditioner described above, the crossflow fan 12 is integrally formed in a horizontally long shape. Therefore, when the crossflow fan 12 is rotated during operation, its characteristic is that the arrow seen in a plane. As shown by, the wind blown from near the center of the fan 12 tends to be strong, and the wind blown from the left and right ends tends to be weak. Therefore, as shown in FIG. 2, the left and right wind direction plates 14 are directed in opposite directions, and even if an attempt is made to widen this blown-out airflow over the entire room, the area around the center of the crossflow fan 12 is Since the blowing air is strong, the blowing air on the left and right is pulled inward under the influence of this central wind, and it does not spread to the wind as in the case where the wind direction plate 14 is facing the front, It had a defect that it was only blown out.

[0004]

[Problems to be solved by the device]

 The present invention was devised in view of the above-mentioned problems of the conventional type, and it is possible to obtain a wide blown air flow as necessary by utilizing the characteristics of the cross flow fan and the influence of the wind. It is intended to provide a structure of a blower.

[0005]

[Means for Solving the Problems]

 The air blower for an air conditioner according to the present invention for solving the above problems has the following structure. That is, in an air conditioner in which a cross flow fan is provided in the air flow path of the main body and an air flow direction plate is provided on the outlet side, the cross flow fan is divided into a plurality of parts, and the number of revolutions of the fan at the center is lower than that of the fan. , The fans on both sides are connected via a transmission so that the number of rotations of the fans on both sides increases. In addition, a cross-flow fan is divided into multiple parts, and the gear transmission that connects the fans is equipped with a gear device configured so that the rotation speeds of the fans on both sides are higher than the rotation speed of the central fan. It will be.

[0006]

[Action]

 In the above structure, by dividing the cross flow fan into a plurality of parts, the strength of the air flow blown out through each fan during operation depends on the rotation speed of the fan. The drive unit is configured on one side of the divided cross-flow fan, but in order to transmit the power of this power unit to each fan, the power transmission shaft connecting the respective fans may be, for example, a gear unit. By providing the transmission including the above, the rotational speeds of the fans on both sides are higher than the rotational speed of the central fan when the drive device rotates. Here, the left and right fans are configured to have the same rotation speed during operation.

However, in the air flow blown out through the cross flow fan during operation, the air blown out from the central fan having a low rotation speed becomes weak, and the airflow blown from the fans on both sides having a higher rotation speed than this. Become stronger. As a result, unlike the conventional horizontally long crossflow fan, the blowing air around the center of the fan does not become strong during operation, but the blowing air near both sides of the crossflow fan is strengthened. Due to this tendency, the overall blow-out air is averaged, and by directing the left and right wind vanes in opposite directions as necessary, the blow-out winds from the fans on both sides are not attracted to the front side. It is divided into left and right along the direction of the board, and a wide airflow can be obtained.

[0008]

【Example】

 The present invention will be described below based on an embodiment shown in the drawing. In FIG. 1, reference numeral 1 is a main body of an indoor unit of an air conditioner, and two cross flow fans are provided in an air passage of the main body 1. A bearing frame 3 is provided on the lower side of the front surface on the side of the outlet, and a plurality of left and right airflow direction plates 4 are pivotally supported so as to be swingable. The cross flow fan 2 is divided into a central fan 21, a left fan 22 and a right fan 23, and the central fan 21 is connected to a power transmission shaft connecting these fans. The transmissions 5 and 6 including gear devices such as a planetary gear device are provided so that the rotation speeds of the left fan 22 and the right fan 23 on both sides are higher than the rotation speeds of the above. Moreover, the rotational speeds of the left fan 22 and the right fan 23 are configured to be the same during operation.

With the above structure, the cross flow fan 2 is divided into the central fan 21, the left fan 22 and the right fan 23, and the transmissions 5, 6 are respectively connected to the power transmission shafts connecting the respective fans. By providing it, the air flow blown out through the central fan 21 having a low rotation speed becomes weaker during the operation by the drive device, and the air flow blown out through the left fan 22 and the right fan 23 having a higher rotation speed is stronger. Become As a result, as shown by the arrow in the figure, the blowout air near the center of the crossflow fan 2 does not become strong, but the blowout air near both sides of the crossflow fan 2 tends to be strengthened. Accordingly, by directing the left and right wind direction plates 4 in opposite directions, the air flow on the front side blown out through the central fan 21 is weakened and the left side fan 22 and the right side fan 23 are not affected by this. The blown airflow is divided into right and left along the direction of each wind direction plate 4, and a wide blown airflow can be obtained.

[0010]

[Effect of the device]

 According to the blower of the air conditioner of the present invention, a transmission is provided on the power transmission shaft connecting the respective fans to the separately formed cross-flow fan, so that the rotation of the central fan during rotation by the drive device. The number of rotations of the fans on both sides is higher than the number of rotations. By utilizing the characteristics of the cross-flow fan due to the difference in the number of revolutions, it is possible to weaken the air blown from the central fan and to increase the air blown from the fans on both sides. As a result, unlike the conventional type, the blowout air near the center of the fan does not become strong, but the blowout air near both sides of the crossflow fan tends to be strengthened, so that the blowout air is concentrated on the front side. The airflow from the entire fan can be averaged to obtain a comfortable airflow, while the airflow from the fans on both sides can be adjusted by turning the left and right wind vanes in opposite directions as necessary. It is possible to obtain a wide blown air flow by splitting it into left and right along the direction of the wind direction plate.

[Brief description of drawings]

FIG. 1 is a cutaway plan view of a main part of an air conditioner blower according to an embodiment of the present invention.

FIG. 2 is a cutaway plan view of a main part of a blower for a conventional air conditioner.

[Explanation of symbols]

 1 main body 2 cross flow fan 3 bearing frame 4 left and right wind direction plate 5 transmission 6 transmission

Claims (2)

[Scope of utility model registration request] 1. An air conditioner in which a cross flow fan is provided in an air flow path of a main body, and an air flow direction plate is provided on the outlet side of the main body. The cross flow fan is divided into a plurality of parts, and the rotation speed of a central fan is set. An air conditioner blower characterized in that the fans on both sides are connected via a transmission so that the number of rotations of the fans on both sides is increased. 2. A gear configured such that a cross-flow fan is divided into a plurality of parts, and a power transmission shaft connecting these fans has a rotational speed of both fans higher than a rotational speed of a central fan. The air blower for an air conditioner according to claim 1, further comprising a device.