JPH0413530Y2 - - Google Patents

Description

[Detailed description of the invention] (a) Industrial application field The present invention relates to an air blower equipped with a cross flow fan.

(b) Prior Art An example of the structure of a blower device equipped with a cross flow fan is disclosed in Japanese Utility Model Application Publication No. 59-98218.

According to this content, the support plate to which the bearing of the crossflow fan is fixed is provided with a hole for positioning the fan casing. On the other hand, this fan casing was molded from styrofoam, and a projection was provided on the top surface to be inserted into a hole in the support plate.

Then, the bearing of the crossflow fan is received by the support plate, and the protrusion of the fan casing is inserted into the hole of the support plate, and the crossflow fan, fan casing, and support plate are assembled to form a blower. Ta.

(c) Problems that the invention aims to solve In such blower devices, the fan casing is made of styrofoam, so it easily deforms, and the accuracy of the gap size between the fan and the fan casing cannot be maintained, resulting in poor air volume and noise levels. There was a problem with variations in the results.

The purpose of the present invention is to improve the accuracy of the gap size between the styrofoam fan casing and the fan, thereby reducing variations in air volume and noise levels.

(d) Means for solving the problem In order to achieve this objective, the present invention has a hole for holding the bearing of the cross flow fan in the support plate, and a hole that is larger than the outer diameter of the cross flow fan around this hole. An annular guide piece having an inner diameter is provided, and the bearing of the cross flow fan is mounted in the hole of the support plate, and the inner circumferential surface of the styrofoam fan casing is placed against the outside of the guide piece.

(E) Function A hole in which the bearing of the crossflow fan is arranged in the support plate to which the arc-shaped fan casing is attached, and an annular guide piece with an inner diameter larger than the outer diameter of this fan centered around this hole. Since the arc-shaped inner surface of the fan casing is placed against the outside of this guide piece, the dimension from the center of the hole to the inner surface of the guide piece is larger than the radius dimension of the crossflow fan, and this fan This ensures that the gap with the casing can be maintained.

(F) Example Figure 1 shows an integrated air conditioner 1 installed in a window.
FIG. Reference numeral 2 denotes a partition plate that partitions the interior of the air conditioner into front and rear parts, and is placed on a rising piece 3 (see FIG. 2) that runs approximately diagonally on the bottom plate. 4 is a condenser, and 5 is an outdoor cross-flow fan, which sucks air through a ventilation grille 7 of an exterior body 6, exchanges heat with the condenser 4, and then discharges it from a discharge port 8.

Reference numeral 9 denotes a fan casing that is placed on a horizontal partition plate 10 while touching the front side of the partition plate 2. This horizontal partition plate 10 separates the front side of the air conditioner from the upper indoor chamber 11 and the lower machine room 12 (lower machine room 12). (See Figure 2). 13 is an evaporator, and 14 is a drain receptacle formed by recessing the horizontal partition plate 10 below the evaporator 13 to receive drain water dripping from the evaporator 13. A drain guide 15 is integrally formed in the drain receiver 14, and this drain guide 15 extends to the outdoor chamber 16 through the fan casing 9 and the partition plate 2.
The tip 17 of is in contact with the fin 18 of the condenser 4. Reference numeral 19 denotes an indoor cross flow fan supported by a horizontal plate 10 and a support plate 20 (see Figure 3). It is guided by the casing 9 and discharged from the discharge port 22.

FIG. 2 is a cross-sectional view showing the internal structure of the lower part of the air conditioner 1. As shown in FIG. 23 is a compressor that performs a cooling function by sending the refrigerant radiated and liquefied in the condenser 4 to the evaporator 13; 24 is a motor for driving the rotary plate 25;
A rotary plate 25 is supported on the outside of the rotary plate 25. A rising piece 28 is formed on the bottom plate 27 so as to surround the lower part of the outdoor cross flow fan 5, and this rising piece 28 is connected to the above-mentioned rising piece 3 running on the diagonal line, and a trailing edge 28 (FIG. 3) is formed on the bottom plate 27. ) and the drain pan 29 surrounded by the rising pieces 3 and 28
is formed. This drain pan 29 is provided with a condenser 4 and a rotary plate 25, while an evaporator 13
The drain water dripped from the condenser 4 is guided through the drain receiver 14, the drain guide 15, and the fins 18 of the condenser 4. Most of the drain water from the evaporator 13 is heated and evaporated by the heat of the condenser 4 before flowing into the drain pan, but the drain water that has not been completely evaporated is received by the drain pan 29 of the bottom plate 27.
When drain water accumulates in the drain pan 29 in this way, it is scraped up by the rotation of the rotary plate 25 and sprayed onto the condenser 4.

5 and 6 show the relationship between a fan casing 9 made of expanded polystyrene and a support plate 20. The support plate 20 is provided with holes 30 and 31 at two locations. A bearing 32 of the cross-flow fan 19 on the indoor side is fitted into one hole 30, and a bearing of the cross-flow fan 5 on the outdoor side is fitted into the other hole 31, respectively. Reference numerals 33 and 34 are annular guide pieces extending downward around the holes 30 and 31. The inner diameter dimension a of this guide piece 33 is the cross flow fan 1
The outer diameter dimension b of No. 9 is set slightly larger than that of No. 9. On the other hand, the top plate 35 of the fan casing 9 has two
Two mounting holes 36 and 37 are formed, and the dimensions of one mounting hole 36 are the same as those of one guide piece 3 of the top plate 20.
3, and the dimension of the other mounting hole 37 is made to match the outer diameter dimension d of the other guide piece 34, respectively. Incidentally, an evaporator 13 is arranged on the front side of the fan casing 9.

Then, connect the outdoor cross flow fan 5 to the bottom plate 2.
7, the indoor cross flow fan 13 is installed on the horizontal plate 1.
0, the fan casing 9 is inserted from above, and the casing 9 is
The arc-shaped vertical plate 38 is placed in front of the front surface of the partition plate 2. In this way, the cross flow fans 5 and 19 are installed in the mounting holes 36 and 37 of the fan casing 9, respectively.
The upper end of the rotary shaft 39 is positioned to protrude from the mounting hole 36. Thereafter, the support plate 20 is assembled to the fan casing 9 while the outer circumferential surfaces 41 of the guide pieces 33 and 34 of the support plate 20 are applied to the inner circumferential walls 40 of the mounting holes 36 and 37 of the fan casing 9, and the bearing 32 is attached to the rotating shaft 39. After insertion, this bearing 32 is attached to the holes 30, 31 of the support plate 20.

When the cross flow fans 5, 19, fan casing 9, and support plate 20 are combined in this way,
As shown in FIG. 6, the guide piece 33 of the support plate 20
The vertical plate 38 of the fan casing 9 is located outward from the fan casing 9. That is, the fan casing 9 molded from a hard foam insulation material such as expanded polystyrene is connected to the cross flow fans 5 and 19 by the guide pieces 33 and 34.
This cross flow fan is located outside of
The dimension of the gap with the fan casing 9 can be maintained as designed.

(g) Effects of the invention As described above, according to the invention, the support plate of the crossflow fan has a hole for holding the bearing of this fan, and the diameter of the crossflow fan is An annular guide piece with a slightly larger inner diameter is provided, and the arc-shaped inner peripheral surface of the fan casing is brought into contact with this guide piece, so that the fan casing is molded from a hard foam insulation material such as expanded polystyrene. However, the gap between the fan and the casing can be maintained constant,
Variations in air volume and noise values can be reduced.

[Brief explanation of drawings]

The drawings show an embodiment in which the present invention is applied to an integrated air conditioner. Figure 1 is a cross-sectional view showing the upper structure of the air conditioner, and Figure 2 is a cross-sectional view showing the lower structure. Figure 3 is a vertical sectional view, Figure 4 is a rear view of the air conditioner, Figure 5 is a perspective view of the main parts showing the relationship between the support plate and fan casing of the air conditioner, and Figure 6 is the support plate and the fan casing. FIG. 6 is a sectional view taken along line AA in FIG. 5 and showing the relationship between the fan casing and the crossflow fan. 5, 19... Crossflow fan, 9... Fan casing, 20... Support plate, 30... Hole, 3
2... Bearing, 33, 34... Guide piece.

Claims (1)

[Scope of utility model registration request] In a blower device in which a cross flow fan and a fan casing of this fan are supported by a support plate,
The support plate is formed with a hole for holding the bearing of the cross flow fan, and an annular guide piece having an inner diameter slightly larger than the outer diameter of the cross flow fan around the hole, Meanwhile, the fan casing has a substantially arc-shaped inner surface surrounding the cross-flow fan, and the substantially arc-shaped inner surface of the fan casing is provided on the outside of the guide piece.