JPH01189438A - Blade guard fixing device for air-conditioning machine - Google Patents

Abstract

PURPOSE:To facilitate the fixing of a blade guard to a front panel as well as the removal of the same from the front panel, by a method wherein an outer end fixing part, formed on the radial frame of a blade guard, is inserted into respective L-shape holes and is turned forcibly along a sliding groove to fix the outer end fixing part by a recess, formed in two projected parts. CONSTITUTION:When a blade guard 18 is attached to a front panel 13, outer end fixing parts 23 are inserted by pushing them into L-shape holes 20, provided at positions, matching with respective radial frames. After pushing them forcibly, the whole of the blade guard 18 is turned right. In this case, the blade guard 18 is turned while being slid along a sliding groove 20a and the outer end fixing parts 23 are fitted into recesses 24, formed between projecting parts 21, 22 formed so as to be projected inward whereby the blade guard 18 is fixed. When the blade guard 18 is to be removed, the blade guard 18 is turned left strongly, the outer end fixing parts 23 are released from the recesses 24 by turning it from the sliding groove 20a to positions straight to the L-shape holes 20 and the blade guard 18 is pulled out to the side of an operator. It is not necessary to use any special tool to attach and detach the blade guard, the blade guard may be attached and detached simply and a time necessary for maintenance may be shortened.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a device for securing a safety vane guard of a propeller fan of an outdoor unit of an air conditioner.

2. Description of the Related Art Conventionally, for example, as shown in FIGS. 6 and 7, an outdoor unit of an air conditioner has a compressor 5 for compressing refrigerant on a bottom frame 1, and a heat exchanger for condensing or evaporating the refrigerant. 4, a propeller fan 7 for condensing or evaporating the heat exchanger 4, and a motor 6 for driving the propeller 77 are fixed vertically. A back cabinet 2 is provided to house the heat exchanger 4 and compressor 6.
A front panel 3 made of sheet metal is fixed to the frame 1 and has an orifice 9 provided for reducing air blowing noise, and is located in front of the propeller fan 7, and is joined to the back cabinet 2 to form a frame. It is fixed at 1.

This front panel 3 is provided with a 1° round hole shown in FIG. 6, into which a blade guard 8 for the propeller fan 7 to prevent danger is attached. Specifically, the blade guard 8 has a structure in which a guard frame 8b formed in a circular shape is joined to a vertical frame 8a, and each outer end 8C of the vertical frame 8a enters a round hole in the crondo panel 3. There is. That is, the outer end 8C of the vertical frame 8a of the blade guard 8 is L-shaped, and after being inserted into the round hole 1o of the front panel 3, it is bent in the direction of the arrow in FIG. 7 using a tool such as a bench. As a result, the blade guard 8 is fixed to the front panel 3.

In this way, conventionally, the blade guard 8 was fixed by inserting each outer end 8C of the vertical frame 8a into the round hole 1o at the tip and then bending it with a tool to prevent it from falling off from the front nozzle 3 or causing product vibration. This was done to prevent the chattering sound of the blade guard.

Problems to be Solved by the Invention In such a conventional configuration, the outer ends 8C of the blade guards 8 are inserted into the round holes 1o provided in the front panel 3 at various points, and the outer ends 8C are inserted from the back side of the front panel 3. The bending process requires a large amount of man-hours, and the bending process is difficult. Also, attach the feather guard 8 to the front of the product.
In other words, since it cannot be removed from the outside, when replacing the blade guard 8 due to a defect in the completed product, first remove the front blade/L/3 and then remove the back side of the front panel 3 with a tool. There are problems such as the blade guard 8 cannot be replaced unless the bent outer end 8C is returned to its original shape, and the front panel 3 must be removed when replacing the propeller fan. Was.

The present invention has been made to solve these problems, and an object of the present invention is to allow the blade guard to be installed and removed from the front surface of the front panel, thereby making it possible to fix and remove the blade guard without using any tools.

Means for Solving the Problems In order to solve the problems, the present invention connects a pack panel and a front panel to the main body of an outdoor unit, and the front panel has a Z-shaped outer end fixing part of the vertical frame of the blade guard. A large number of L-shaped holes with sliding grooves are formed along the circumferential side of the blade guard, and a hole protruding inwardly near the circular hole is parallel to the sliding groove. It has two convex portions, and these two convex portions form a concave portion into which the outer end fixing portion is fitted.

Function: With this configuration, the outer end fixing part formed on the vertical frame of the vane guard is inserted into each dove-shaped hole, the sliding groove is forcibly rotated, and the recess formed in the two convex parts by this rotation. The outer end fixing part is fixed. When removing the blade guard, the blade guard must be forcibly rotated to the left to remove the outer end fixing portion from the recess, and then pulled out toward the front through the L-shaped hole.

EXAMPLE An example of the present invention will be described below with reference to FIGS. 1 to 4. In FIG. 1, the main body 12 of the outdoor unit of the separate air conditioner includes a compressor 16 for compressing refrigerant on a frame 11, a heat exchanger 14 for condensing or evaporating the compressed refrigerant, and a heat exchanger 14 for condensing or evaporating the compressed refrigerant. A propeller fan 17 for the heat exchanger 14 and a motor 16 for driving the propeller fan 17 are fixed vertically (not shown). A back cabinet 12a for housing the heat exchanger 14 and compressor 16 is fixed to the frame 11, and an orifice 19 is provided to serve as an air outlet for the propeller fan 17 and to reduce air blowing noise. frame 1 so that the front panel 13 with
1 and joined to the front panel 13.

A large number of L-shaped holes 2o are bored in this front panel 13 along the outer periphery of the blade guard 18, and the width A of the L-shaped holes 2o is slightly larger than the diameter of the tip of the blade guard 18. In addition, a sliding groove 20a is formed. That is, the blade guard 18 is composed of a circular guard frame 18a and a vertical frame 18b that extends outward and is welded and fixed at a point where the guard frame 18a intersects with the guard frame 18a. The tip of the vertical frame 18b forms a Z-shaped outer end fixing part 23 that is shallowly bent inward, and is inserted into one side of the slot-shaped hole 2o. Inner convex portions 21 and 22 for sandwiching the outer end fixing portion 23 are formed near the hole 2o and at a position in the rotational direction of the outer end fixing portion 23. A recess 24 into which the outer end fixing part 23 fits is formed between the parts 21 and 22.

In the above configuration, the blade guard 18 is attached to the front panel 1.
3, the outer end fixing part 23 is inserted into the L-shaped hole 20 provided at a position corresponding to each frame 18b while being pressed. After performing this forced holding, when the entire blade guard 18 is rotated to the right, it rotates while sliding in the sliding groove 20a, and the outer end fixing part 23
is fitted into and fixed in a recess 24 formed between a protrusion 21 and a protrusion 22 that are formed to protrude inward.

Next, if it is necessary to perform maintenance such as removing the propeller fan 17, etc., in the reverse order, strongly rotate the blade guard 18 to the left, remove the outer fixing part 23 from the recess 24, and remove the outer fixing part 23 from the sliding groove 20a. The blade guard 18 is rotated to the straight position of 2 degrees from the hole, and the blade guard 18 is pulled out toward the front side.

Effects of the Invention As is clear from the description of the above embodiments, the present invention provides an L-shaped front panel having a sliding groove at a position corresponding to the Z-shaped outer end fixing portion formed on the vertical frame of the blade. hole and
The outer end fixing part fits near this L-shaped hole, forming a recess formed by the two convex parts, and the outer end fixing part is fixed to these four parts, so it can be attached and detached using a tool. There is no need to do so, the blade guard can be easily attached and detached, maintenance time is shortened, and there is no need to remove the front panel as in the conventional case.

[Brief explanation of the drawing]

FIG. 1 is a plan view of a blade guard fixing device for an air conditioner according to an embodiment of the present invention, FIG. 2 is a front view of the blade guard fixing device for the air conditioner, and FIG. 3 is a plan view of the blade guard fixing device for the air conditioner. FIG. 4 is a sectional view of the blade guard fixing device in FIG. 2, FIG. 6 is a plan view of the conventional air conditioner blade guard fixing device, and FIG. FIG. 7 is a front view of a blade guard fixing device for a harmonizer, and a partial sectional view of a conventional blade guard fixing device. 12...Main body, 12a...Pack cabinet, 13...Front panel, 18...
...Blade guard, 18b... Vertical frame, 2o
......L-shaped hole, 20 a...Sliding groove,
21.22...Convex part, 23...Outer end fixing part, 24...Concave part. Name of agent: Patent attorney Toshio Nakao and 1 other person No. 5
figure

Claims (1)

[Claims] A back panel and a front panel are joined to the main body of the outdoor unit, and the front panel has an L-shaped hole that corresponds to the Z-shaped outer end fixing part of the vertical frame of the blade guard and has a sliding groove. A large number of holes are formed along the circumference, and near the L-shaped hole there are two holes protruding inward at positions parallel to the sliding groove.
A blade guard fixing device for an air conditioner, the blade guard fixing device having two protrusions forming a concave portion into which the outer end fixing portion is fitted.