JPS589712Y2 - Air blower - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to an air blowing device such as a window ventilation fan equipped with a cross-flow fan, and is an attempt to improve the air blowing efficiency by an inexpensive means.

Hereinafter, the present invention will be explained in detail with reference to drawings, taking as an example a so-called window fan, which is a window ventilation fan whose main purpose is to take fresh outside air into the room and perform ventilation and cooling of the room.

First, in FIGS. 1 and 2, reference numeral 1 indicates a vertically elongated cylindrical cabinet, 2 a motor, and 3 a cross-flow fan connected to the motor 2 and rotated.

The motor 2 and crossflow fan 3 are arranged inside the cabinet 1 in its longitudinal direction.

The cabinet 1 is composed of a pair of cabinet components 4.5 made of resin molded products and each having a semicircular cross section. It has a configuration in which it is divided into left and right halves on the surface including 3.

Further, the upper and lower cabinet components 4 and 5 are integrally molded with upper and lower wall parts, respectively, so that the cabinet 1 is formed into a cylindrical shape having a clay wall and a bottom wall.

Furthermore, a suction port 6 is formed in one of the cabinet components 4 and 5, and a discharge lower is formed in the other.
, 7 open at opposite positions of the cabinet 1.

The motor 2 is disposed at the inner bottom of the cabinet 1, and is connected to one end of the cross-flow fan 3 with a joint 8 made of an elastic material such as rubber.

The other end of the cross-flow fan 3 is supported by a bearing 9 located at the top of the cabinet 1.

The bearing 9 is fixed to a bearing plate 10 supported by a bearing wall 11 (one not shown) integrally molded on both cabinet components 4 and 5.

The supporting wall 11 has an L-shaped holding piece 12 on its lower surface to form a fitting groove 13. The bearing plate 10 is fitted into this fitting groove 13, and the other supporting wall (holding piece and Has a fitting groove.

), and by fixing the bearing plate 10, the bearing 9 is placed in a predetermined position.

Partition walls 14 and 15 are integrally molded on the inner surfaces of both cabinet components 4 and 5, and protrude near both upper and lower ends of the cross flow fan 3 to partition the interior of the cabinet l-1 in the longitudinal direction, that is, into upper and lower ends.

The partition walls 14 and 15 are set so that their wall surfaces are flush with the end surfaces of the cross flow fan 3.

Reference numeral 16 denotes a support wall (one of which is not shown) integrally molded on the inner surfaces of both cabinet components 4 and 5, and is positioned opposite to the lower end surface of the cross flow fan 3 with a small gap therebetween.

17 is a casing placed inside the cabinet 1, 18 is also a stabilizer, 19 is a filter grill provided at the suction port 6, 20 is a front grill provided at the discharge lower,
21 indicates a rotatably pivoted wind direction plate.

In a wind fan with such a configuration, motor 2
When the crossflow fan 3 is rotated, fresh outside air purified by the filter grille 19 is guided inside the cabinet 1 without backflowing, and is blown into the room from the discharge lower.

That is, when the cross flow fan 3 rotates, the pressure is high on the discharge side and low on the suction side, so the partition wall 14.
15 and there is a large space on the end side of the cross-flow fan 3, air flows backward through the space from the high-pressure discharge side to the low-pressure suction side, resulting in a decrease in air blowing efficiency. In this case, the partition walls 14 and 15 prevent backflow of air and achieve high air blowing efficiency.

Note that the partition walls 14 and 15 may be provided flush with the holding piece 12 and the support wall 16.

In addition, the holding piece 12 and the support wall 16, which face the end face of the cross-flow fan 3 with a small gap, receive the cross-flow fan 3 with a wide surface when the product falls, thereby preventing damage to the cross-flow fan 3 or damage to the bearing. This prevents the user from slipping out of the 9.

In other words, since the motor 2 and the cross-flow fan 3 are connected by a joint 8 made of an elastic material so as to absorb the misalignment of the axes, the cross-flow fan 3 will move in the axial direction due to the impact caused by the fall. There is a risk that the bearing 9 may fall out of the bearing 9 and be damaged, and this is prevented by the holding piece 12 and the support wall 16.

3 and 4 show other examples of the bearing support part, in which support walls 22 and 23 are integrally molded on the inner surfaces of both cabinet components 4 and 5, and one of the support walls 22 has a split surface. An insertion groove 24 with one end open on the side and a cut groove 25 located at the bottom of the groove 24 are formed, and the other support wall 23 has the insertion groove 24 formed therein.
4 is provided with a protruding presser portion 26 that fits into the portion 4.

First, the bearing 9 is fitted onto the shaft 3' of the cross flow fan 3, and the shaft 3' and the bearing 9 are inserted into the cut groove 25 and the insertion groove 2.
4 through its open end to a predetermined position, and then connect both cabinet components 4 and 5 to form the presser part 2.
6 closes the open end of the insertion groove 24 and simultaneously pushes and fixes the bearing 9.

Therefore, according to this structure, the bearing plate 10 can be omitted.

Alternatively, the holding part 26 may be omitted and a separate part may be used to replace the bearing 9.
may be fixed within the insertion groove 24.

As described above, the present invention provides an air blower in which a motor and a cross-flow fan connected to the motor are arranged in the longitudinal direction inside a cabinet having a suction port and a discharge port. A combination of these creates a left and right bipartite configuration along the longitudinal direction, and a partition wall is integrally molded on the inner surface of both cabinet components to protrude near the end of the cross flow fan and partition the inside of the cabinet in the longitudinal direction. Because it is a product, it is possible to prevent backflow of air inside the cabinet and improve ventilation efficiency, and the partition wall that prevents backflow can be molded integrally with the cabinet structure, making it cheaper in terms of cost. In addition, by molding the partition wall separately into both cabinet components, the motor and crossflow fan, which are placed across the partition wall, can be assembled inside the cabinet in a connected state, making it easier to assemble. It is convenient and extremely practical.

[Brief explanation of drawings]

Fig. 1 is a cross-sectional view showing one embodiment of the proposed device, Fig. 2 is a cross-sectional view taken along the line A-A in Fig. 1, Fig. 3 is a component country showing another example of the bearing support part of the above, and Fig. 4 a. , l) is a cross-sectional view of a main part of the upper cabinet structure. 1: Cabinet, 2: Motor, 3: Cross flow fan, 4, 5: Cabinet structure, 6: Suction port, 7:
Discharge ports, 14, 15: Partition wall.

Claims (1)

[Scope of utility model registration request] In an air blowing device in which a motor and a cross-flow fan connected to the motor are arranged in the longitudinal direction inside a cabinet having a suction port and a discharge port, the cabinet is arranged in the longitudinal direction by a combination of a pair of cabinet components made of resin molded products. The present invention is characterized in that the cabinet structure is divided into left and right parts along the same axis, and a partition wall is integrally formed on the inner surface of each of the cabinet components to protrude near the end of the cross flow fan and partition the interior of the cabinet in the longitudinal direction. Air blower.