JPH10311607A - Filter of hot air heater - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve the maintainability by mounting a filter on a back plate while a knob is pressed by an upper surface part of the filter, and giving one push to the know when detaching the filter. SOLUTION: A knob 9 is fitted to a filter fixing groove 1a in an operation panel 1 while a spring 10 is urged. When a projected part 9a of the knob 9 is pushed in the direction of the arrow B, and a tip part 9b is approximately on the same plane as the outer circumference of the operation panel 1, an upper part 3a of a filter 3 is pulled in the direction of the arrow C, and a hooking claw 3b of the filter 3 is detached from a filter fixing hole 2a in a back plate 2 to detach the filter 3. The hooking claw 3b of the filter is inserted in the filter fixing hole 2a in the back plate 2 and at the same time, the tip part 9b of the knob 9 is pressed in the direction of the arrow B by a back side part of the filter 3, the filter 3 is pressed downward, the upper part 3a of the filter 3 is detached from the tip part 9b of the knob 9, and the filter 3 is mounted thereon.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a filter for a warm air heater.

[0002]

2. Description of the Related Art In most cases, a filter of a conventional warm air heater is mounted on a back plate, and is fixed to the back plate with screws 21 as shown in FIG.

[0003]

In the above configuration, periodic inspection and maintenance are required to avoid troubles related to safety and to sufficiently maintain the function as a hot air heater.

[0004] In addition, many of these filters can be easily removed by a child's mischief or the like, even when the filter is not being cleaned. There was fear.

[0005] As shown in Fig. 6, there is a filter in which the filter is screwed to take safety into consideration. However, when it is attempted to remove the filter, it takes time and effort to loosen the screw.

[0006]

According to the present invention, a knob is inserted into a filter fixing groove provided in a part of an operation panel on an outer periphery of a back plate, and is slid.
When mounting the filter, it is attached to the back plate while pressing the knob on the upper surface of the filter, and removal is possible by pushing the knob with one push.

[0007]

According to the first aspect of the present invention, an operation panel is fitted and positioned above a filter fitted with a claw fitted to a slit of a back plate and along an outer periphery of the back plate. A filter fixing groove is provided in a part of the filter, and a slidable knob is provided in the filter fixing groove with a spring. When the knob stops at a position outside the outer periphery of the operation panel, a part of the outer periphery of the filter is moved downward. It is made to hold down.

Then, the knob is housed in the filter fixing groove, the filter is attached to the back plate, and the knob is pulled out so as to be in contact with the upper part of the filter, and the filter is prevented from coming off and fixed.

According to the second aspect of the present invention, the knob is mounted via a spring in the filter fixing groove of the operation panel, and the fixing of the filter is released when the knob is pressed in a direction in which the spring is compressed. . Then, press the knob against the spring by pressing the knob against the filter, and then insert the claw into the slit.Then the knob springs out of the upper end of the filter by the spring force, stopping the upward movement of the filter and fixing it. .

According to the third aspect of the present invention, the tip of the knob is inclined from the lower surface to the upper surface in a direction opposite to the filter mounting surface. And
By providing this inclined surface, the frictional area where the filter and the knob slide is reduced, and the filter and the knob can be fitted smoothly.

An embodiment of the present invention will be described below with reference to the drawings. (Embodiment 1) FIGS. 1 and 2 are external views of a gas-fired hot air heater according to Embodiment 1 of the present invention. In FIG. 1, reference numeral 1 denotes an operation panel having an operation panel P on the upper surface of the device, 2 denotes a back plate having intake holes at a plurality of positions, and a dustproof filter 3 is mounted on the back surface thereof. Reference numeral 4 denotes a front plate, at the lower part of which a hot air outlet 5 is mounted. Reference numeral 6 denotes a stand.

Although not shown inside the device,
A heat exchanger that sucks room air and heats it with a burner, a blower fan that circulates room air, an electrical board that controls equipment, and the like are mounted.

A filter fixing groove 1a is provided in the lower portion of the rear surface of the operation panel 1, and a knob 9 is fitted into the filter fixing groove 1a by urging a spring 10. 4 and 5 show the details.

[0014] The room air 7 sucked by operating the equipment passes through the filter 3 and is heat-exchanged by the burner.
The hot air 8 is discharged from the outlet 5. This air 7
Part of the dust and dust in the course of the flow is removed by the filter 3 and adheres. When the amount of adhesion increases, the supply of air required for combustion is hindered, and the original performance of the device is impaired, causing trouble. Therefore, it is necessary to remove the attached dust and dust. Therefore, it is necessary to remove and mount the filter 3.

The operation method will be described with reference to FIGS. When removing the filter 3 attached to the device, as shown in FIG. 4, first, the convex portion 9a of the knob 9 was pushed in the direction of arrow B, and the tip 9b was almost flush with the outer periphery of the operation panel 1. At this time, the upper part 3a of the filter 3 is pulled in the direction of arrow C. Then the hook 3b of the filter 3
However, since it comes off from the filter fixing hole 2a of the back plate 2, the filter 3 can be removed.

Next, a method of mounting the filter 3 will be described. As shown in FIG. 5, hook 3b of filter 3
Is inserted into the filter fixing hole 2a of the back plate 2 and at the same time, the tip 9b of the knob 9 is pressed in the direction of arrow B by the back surface 3c of the filter 3, and the filter 3 is further lowered in the direction of arrow D.

That is, at this time, the force pressing the filter 3 becomes A which is a combination of B and D, and the force of A
Are fitted. Then, the upper portion 3a of the filter 3 comes off the tip 9b of the knob 9, and the knob 9 returns to the original state by the repulsive force of the spring 10, and the mounting of the filter 3 is completed in the state shown in FIG.

[0018]

As is apparent from the above description, the filter of the warm air heater according to the present invention has the following effects.

The attachment and detachment of the filter can be performed with one touch, and the maintenance property is improved. In addition, since the lock mechanism is integrated with the operation panel, the screws and the like are not lost as in the past, and the filter can be fixed without fail and safety can be ensured.

Further, since the tip of the knob has a partly inclined surface, when sliding on the operation panel, the resistance is reduced and smooth movement is obtained.

[Brief description of the drawings]

FIG. 1 is an external perspective view showing a filter of a hot air heater in Embodiment 1 of the present invention.

FIG. 2 is a rear perspective view of a filter of the hot air heater.

FIG. 3 is a side view of a filter of the hot air heater.

FIG. 4 is a partial cross-sectional view of a filter of the hot air heater.

FIG. 5 is another partial cross-sectional view of the filter of the hot air heater.

FIG. 6 is an external view showing a filter of a conventional hot air heater.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Operation panel 1a Filter fixing groove 2 Back plate 2a Filter fixing hole 3 Filter 3b Hook 9 Knob 9b Tip 10 Spring

Claims (3)

[Claims] 1. A filter fixing groove is provided in a part of an operation panel which is fitted and positioned above a filter fitted with a claw fitted to a slit of a back plate and along an outer periphery of the back plate.
This filter fixing groove is provided with a slideable knob,
When the knob stops at the position where it is pulled out from the outer periphery of the operation panel, a filter of the hot air heater that presses a part of the outer periphery of the filter downward. 2. The hot air heating system according to claim 1, wherein the knob is mounted in a groove of the operation panel via a spring, and the filter is unlocked when the knob is pressed in a direction in which the spring is compressed. Machine filter. 3. The filter for a warm air heater according to claim 1, wherein the tip of the knob is inclined in the direction opposite to the filter mounting surface from the lower surface to the upper surface.