JPH04203715A - Fan guard of air conditioner - Google Patents

Abstract

PURPOSE:To raise the easiness in the installation work, install for sure, and miniaturizing an air conditioner by fixing a fan motor in the central section of a fan guard and fixing the fan guard by placing the outer circumferencial section of the spoke between a cabinet and an air blast guide. CONSTITUTION:The motor mounting base 9 is welded to the spoke 8 in the central section of a fan guard 6, and the fan motor 10 is fixed to a motor mounting base 9 by means of bolts 16, and the fan 11 is installed to the fan motor 10. In the center of a cabinet 13 an air blast port 13a is opened, and at the brim of the air blast port 13a an upright projection 13b is formed by drawing-out. The air blast guide 12 is formed in the shape of a bell mouth in order to raise the efficiency of blasting air by the fan 11, and a flange 12a surrounds the circumference on the side of the cabinet 13. The fan guard 6 is held by being placed between the cabinet 13 and the air blast guide 12. With this constitution the easiness of the work to install the fan guard 6 is improved and a stable strength in the mounting is given and an air conditioner that is small in size and low in cost is provided.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a guard for a fan for blowing air in an outdoor unit of an air conditioner.

[Conventional technology]

The conventional blower fan card is shown in Figure 3.
- As described in Publication No. 163758, fan guard 1
spokes 2 extending radially from the center of the spokes (2
), bend the tip of the spoke 2, and
The bent part 2a was formed, a burring hole 5a was made in the cabinet 5 surrounding the outer periphery of the air conditioner, and after the bent part 2a was inserted into the burring hole 5a, it was fixed by welding. Further, a fan motor 10 for rotating the fan 11 is mounted on a base 5b and is fixed to a stand 10a with bolts 16. 4 is a blower kite, and 15 is a heat exchanger.

[Problems to be Solved by the Invention] The conventional fan guard mounting structure described above has the following features: 1) The work of inserting the bent portion 2a into the mounting hole 5a takes 8 to 1 steps.
Since zero spokes 2 had to be aligned and inserted at the same time, the installation work took a lot of time.

2) In general, the cabinet 5 is made of a steel plate with a thickness of 1 mm or less, and the spokes 2 are made of a steel plate with a diameter of several strokes, so there is a large difference in heat mass, making welding difficult and making it impossible to obtain reliable welding strength. Ta. For this reason, the bent portion 2a may sometimes come out of the mounting hole 5a due to impact during transportation.

3) As mentioned above, since there is concern about the mounting strength, the fan motor 10 is mounted with the motor mount 10a installed inside the unit, resulting in an increase in the size and cost of the unit.

It had the following drawbacks.

SUMMARY OF THE INVENTION An object of the present invention is to provide a fan guard that is easy to install, can be installed reliably, and can downsize an air conditioner.

[Means for solving the problem] In order to achieve the above objective, we have developed a fan guard consisting of radially arranged spokes and intersecting guards, a cabinet that surrounds the air conditioner, a blower fan, and a fan. In an air conditioner, which consists of a fan motor that rotates the fan and a blower guide installed to blow air efficiently,
The fan motor is fixed to the center of the fan guard, and the fan guard is fixed by sandwiching the outer periphery of the spoke between the cabinet and the air guide.

[Function] The spokes of the fan guard are sandwiched between the cabinet and the air guide and are fixed by welding the cabinet and the air guide, so the fan guard can be securely fixed. This is because both the cabinet and the air guide are made of steel plates with a thickness of 1 mm or less, so the heat mass is almost the same and stable welding work can be performed. Further, since there is no work such as passing the tip of the spoke through a hole, workability is extremely good.

Furthermore, since stable strength is obtained, the fan motor can be attached to the fan guard, and there is no need to attach fan motor attachment parts inside the air conditioner, resulting in a small, low-cost air conditioner.

[Embodiment] An embodiment of the present invention will be described below with reference to FIGS. 1 and 2.

The fan guard 6 is made by welding together a guard 7 made of a circular steel plate and spokes 8 arranged radially. Generally, the card 7 has a diameter of about 2 mm, and the spokes 8 have a diameter of about 4 mm. Reference numeral 9 denotes a motor mounting base, which is welded to the spoke 8 at the center of the fan guard 6. The fan motor 9 is fixed to the motor mounting base 9 with bolts 16, and the fan 11 is attached to the fan motor 10.

The cabinet 13 has an air outlet 13a in the center, and an upright 13b is squeezed out at the edge of the air outlet 13a.

13c is a notch through which the spoke 8 passes.

Reference numeral 12 denotes an air blowing guide, which is shaped like a bell mouth so that the fan 11 can blow air efficiently, and has a flange 12a surrounding it on the cabinet side. The flange 12a has a constricted portion 12b at a position facing the spoke.
This is provided.

14 is a base, 15 is a heat exchanger, and 16 is a cover.

According to the present invention described above, since the fan guard 6 is held between the cabinet 13 and the blower guide 12, the installation work is extremely easy, and
3 and the blower guide 12 are made of steel plates with approximately the same thickness, so stable and reliable welding can be performed. Therefore, by disposing the motor attachment base 9 in the center of the fan guard 6, the fan motor 9 can be attached to the fan guard 6, and a small and low-cost air conditioner can be obtained.

〔Effect of the invention〕

Since the present invention is configured as described above, the fan guard 6 can be easily installed, stable installation strength can be obtained, and the fan motor 10 can also be installed in the center, reducing costs. There are also effects such as being able to achieve

[Brief explanation of the drawing]

Fig. 1 is a longitudinal cross-sectional view showing a fan guard mounting structure according to an embodiment of the present invention, Fig. 2 is an exploded perspective view of the main part of Fig. 1, and Fig. 3 is a longitudinal cross-sectional view of a fan guard mounting structure showing a conventional example. It is. 6...Fan guard, 9...Motor mounting base, 1
゜...Fan motor, 11...Fan, 12...
Air blow guide, 13...cabinet. Miscellaneous drawing 1

Claims (1)

[Claims] 1. Fan guard (6) composed of radially arranged spokes (8) and guards (7) intersecting the spokes
, a cabinet (13) that surrounds the air conditioner, a fan (11) for blowing air, a fan motor (10) that rotates the fan (11), and a blower guide (12) provided to blow air efficiently. In an air conditioner, the fan motor (10) is fixed in the center, and the spokes (8)
The outer periphery of the cabinet (13) and the ventilation guide (12)
A fan guard for an air conditioner characterized by being clamped and fixed with.