JPS6158998A - Blower in air-conditioning system - Google Patents

Abstract

PURPOSE:To facilitate and automatize the coupling process of the shaft of a motor with a boss section including, on its inner surface, a shape memory alloy liner having one end thereof exposed to the outside, by forming the end plate section of peripheral edge of the boss section from a rubber plate so that the coupling between the boss section and the motor shaft may be made only by heating. CONSTITUTION:A boss section 16 including on its inner surface a shape memory alloy liner 20 having one end exposed to the outside is arranged in the center section of an end plate section 15 which is attached to the other end of a fan 13. Further, a rubber plate 17 is provided on the peripheral edge of the boss section 16 so that the rubber plate 17 supports the boss section. A guide taper 18 is formed in an inserted section opening in the peripheral edge of the boss section 16. A shaft 19 is a shaft of a fan motor which is not shown and which is beforehand attached to a compartment unit body. With this arrangement, after the boss section 16 is inserted obliquely onto the motor shaft 19 while the rubber plate 17 of the end plate section 15 is flexibly deformed, the shaft 19 and the boss section 16 may be coupled together only by heating. Thereby it is possible to facilitate and automatize the coupling thereof.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a connection structure between a cross flow fan (hereinafter simply referred to as a fan) and a fan motor in an air conditioner.

Conventional Structure and Problems Conventionally, as shown in FIGS. 1 and 2, this type of fan and fan motor connection device has been installed in advance in the indoor unit main body 1 having a suction port 2 and a Suita port a. After the fan 4 was installed, the fan motor 5 was fixed with bolts after adjusting the dimensions of the fan 4 in the axial direction.

However, with this structure, it takes a lot of man-hours to fix the bolts,
Moreover, it has the disadvantage that it is difficult to automate.

OBJECTS OF THE INVENTION The present invention solves the above-mentioned conventional drawbacks, and aims to facilitate and automate the work of connecting a fan and a fan motor.

Structure of the Invention In order to achieve this object, the present invention extends one end of a shape memory alloy liner to the host part, provides a guide taper in the insertion end opening, and forms a rubber plate on the end plate part of the periphery of the boss part. It is formed by a ball.

With this configuration, the fan boss part is inserted obliquely into the fan motor shaft while the end plate part is flexibly deformed, and the connection can be completed by heating the boss part.

DESCRIPTION OF THE EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. 3 to 5 of the accompanying drawings. Here, the structure of the air conditioner is the same as that shown in FIGS. 1 and 2, and is well known, so a description thereof will be omitted.

Therefore, here, the configuration of the fan (cross flow fan) and the connection work between the fan and the fan motor will be explained.

In the figure, reference numeral 1 denotes a side wall constituting a wind circuit inside the indoor unit main body, and a shaft hole 12 is formed in a part of the side wall. Reference numeral 13 denotes a fan (cross flow fan) made of a synthetic resin material, and a shaft 14 that is rotatably inserted into the shaft hole 12 is integrally provided at one end. 15 is the fan 1
The liner 2 is made of a shape memory alloy and has a hysteresis nozzle in the center as shown in FIG.
A boss portion 16 having 0 on the inner surface is provided, and this host portion 16
A comb temporary 17 having appropriate flexibility is provided around the periphery of the boss portion 16 so as to support the boss portion 16. Reference numeral 18 denotes a guide taper provided at the periphery of the opening of the boss portion 16.

Reference numeral 19 denotes a shaft of a fan motor (not shown) fixed to the main body of the indoor unit, and is coaxial with the shaft hole 12. This shaft 19 is fitted and inserted into the boss portion 16.

Next, a procedure for attaching the fan 13 having the above configuration between the side wall 11 and the fan motor will be described.

First, the boss portion 16 is brought into contact with the fan motor shaft (~19), and the fan 13 is moved while adjusting the dimension in the axial direction.Next, the rubber plate 17 is deformed until the fan 13 is in a straight line with the shaft 19. Then, the shaft 14 is inserted into the shaft hole 12 of the side wall 11, and the rubber plate 17 is restored to its original state as shown in FIG.

When the boss portion 16 is heated with hot air, the liner 20 made of the shape memory alloy reaches the austenite transformation point (As to Af point) due to the deformability of the shape memory alloy at a temperature at which the shape changes (transformation temperature TI). A large restoring force is generated that tends to shrink toward the center of the circumference. As a result, the shape memory alloy liner 20 has a shape memory alloy at the boss portion 16. In order to attract the rubber plate 17, it is fixed to the boss portion 16 and the shaft 19, and the connection is completed.

Therefore, there is no need for the conventional bolt tightening work, and heating work is sufficient, making it easy to automate the process by automatically blowing warm air.
Since it can also serve as a moving space for the fan 13,
The space occupied by the air blower can be reduced.

In this embodiment, a separate type air conditioner has been described, but the present invention can be similarly implemented in a wide range of integrated air conditioners or a general shaft-and-hoss connection. 'Effects of the Invention As is clear from the above embodiments, the present invention extends one end of a liner made of shape memory alloy to the boss, provides a guide taper in the insertion end opening, and extends the end plate of the peripheral edge of the boss with rubber. By forming it from a plate, the shaft and boss part can be connected by simply heating the host part, making the connection work easier and automated.Furthermore, the shaft of the fan motor can be used as part of the insertion space for the crossflow fan. This has the effect of making it more compact.

[Brief explanation of drawings]

Fig. 1 is a partially cutaway perspective view of an air conditioner equipped with a conventional blower, Fig. 2 is a sectional view of the same air conditioner, and Fig. 3 is an embodiment of the present invention. Fig. 4 is a sectional view showing the state of the cross flow fan and fan motor in the same blower device before they are connected, and Fig. 5 is a cross-sectional view showing the state where the cross flow fan and fan motor are in the middle of being connected in the same air blower. FIG. 6 is a cross-sectional view showing a state in which the cross-flow fan and fan motor in the device have been connected, and is a hysterinoslobe diagram showing the relationship between temperature and displacement of the alloy. 13...Cross flow fan, 15...
End plate part, 16...Boss part, 17...Rubber plate, 18...Guiding taper, 19...Noyaft, 20...Made of shape memory alloy Raina. Name of agent: Patent attorney Toshio Nakao and 1 other person 1st
Figure 2

Claims (1)

[Claims] A wind circuit having an inlet and an outlet is provided inside the indoor unit main body, and within this wind circuit there is a cross flow fan whose one end is rotatably supported on the side wall of the wind circuit, and a cross flow fan whose one end is rotatably supported on the side wall of the wind circuit. and a fan motor having a shaft connected to the other end of the cross-flow fan, and connecting an end face of the cross-flow fan to the fan motor with a boss portion located at the center and into which the shaft fits, and the boss portion. and an end plate portion connecting the outer periphery of the cross flow fan, the end plate portion being formed of a flexible rubber plate, and furthermore, the means for fixing the boss portion and the shaft is made of a shape memory alloy. An air conditioner blower with one end of the liner extended.