JPH0247377Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Field of Application) This invention relates to a residential air conditioner, particularly an indoor unit for air conditioning that is suitable for a duct type and is suspended from a ceiling or the like.

(Prior Art) Conventionally, as an indoor unit of a duct type air conditioner, there is one disclosed in, for example, Japanese Patent Application Laid-Open No. 61-91425.
In this case, a blower unit and a heat exchanger are housed in a case, which is suspended from the ceiling.

(Problems to be Solved by the Invention) However, in the past, the internal components could not be taken out without taking down the entire indoor unit. Therefore, for example, when performing maintenance on just the blower unit, it is necessary to take down the entire indoor unit, disassemble the case, and take out the blower unit, which is a troublesome task.

Therefore, this idea solves the above problems and
The object of the present invention is to provide a hanging indoor air conditioning unit that can be easily maintained.

(Means for solving the problem) The gist of this invention is to provide an outer case in which upper and lower outer case members are removably connected, and an upper and lower inner case that is housed in this outer case. The device has an inner case formed by removably connecting members, and a blower unit and a heat exchanger that are removably housed in the inner case.

(Function) Therefore, when performing maintenance on the blower unit or heat exchanger, first remove the lower case member of the outer case, then remove the lower case member of the inner case, and inspect the internal components. Furthermore, replacement and repair can be performed from below, thereby achieving the above-mentioned problems.

(Example) In FIGS. 1 to 3, the indoor unit for air conditioning is
The upper and lower outer case members 1 are fixed to the ceiling of the house as they are or are embedded and suspended, or are suspended via wires, etc.
It has an outer case 1 consisting of parts a and 1b. The upper outer case member 1a has a first
A bracket 2 is provided in place around its upper end. Further, a flange portion is formed around the lower end of the upper outer case member 1a by being bent inward, and a flange portion is formed around the upper end of the lower outer case member 1b by being bent outward. The flanges are removably fixed at a plurality of locations by first screws 3.

The inner case 4 includes upper and lower inner case members 4a,
4b, and is housed within the aforementioned outer case 1. The projected area of the lower inner case member 4b is smaller than the opening area of the upper outer case member 1a, and the lower inner case member 4b can be taken out from the opening of the upper outer case member 1a. The upper inner case member 4a is provided with a second bracket 5 at a suitable position around the upper end thereof to be fixed to the inner surface of the upper outer case member 1a. Also,
Upper inner case member 4a and lower inner case member 4
A flange portion is bent outward around the upper and lower ends of b, and a second screw 6 is formed between the flange portions.
It is removably fixed at multiple locations.

The inner case 4 includes blower units 7 and 2.
Two heat exchangers 8a and 8b, a drain pump 9, and a humidification tank 10 are housed. The blower unit 7 includes a fan case 7a, a fan 7b housed in the fan case 7a, and a fan 7b.
The motor 7c is attached to the fan case 7a to rotate the fan case 7a. The fan case 7a is removably fixed to the inner surface of the upper inner case member 4a via screws. Further, the outlet of the fan case 7a is connected to an air outlet duct 1 provided through the outer case 1 and the inner case 4.
Connected to 1.

One heat exchanger 8a constitutes a heat pump cycle with a compressor of an outdoor unit (not shown), and operates as an evaporator during cooling and as a condenser during heating, and is opposed to an inlet 12 formed in the inner case 4. This entrance 12
is the air inlet duct 1 provided in the outer case 1
Connects with 3. The other heat exchanger 8b circulates cooling water for the engine of the outdoor unit, and is arranged in parallel to the back of the one heat exchanger 8b. The inlet and outlet pipes of the heat exchangers 8a and 8b pass through the outer case 1 and the inner case 4, respectively, and are connected to piping. Both heat exchangers 8a and 8b, like the blower unit 7, are detachably fixed to the inner surface of the upper inner case member 4a via screws.

The drain pump 9 is for draining condensed water from the heat exchanger 8a stored in the lower inner case member 4b (the lower inner case member 4b serves as a drain pan) when it exceeds a certain level.
Further, water to be mixed with the air to be blown is stored in the humidifying tank 10, and the water is sucked by the blower unit 7.

Furthermore, between the aforementioned outer case 1 and inner case 4, there are two electronic device storage boxes 14a and 14b.
is located. First electronic device storage box 14a
A drive circuit for driving the drain pump 9 described above is housed therein, and is detachably fixed to the outer case 1 via the first cover 15a. Further, the second electromagnetic equipment storage box 14b houses a drive circuit for driving a solenoid valve 16 that is detachably provided on the inner surface of the outer case 1, and is also detachable via the second cover 15b. It is freely fixed to the outer case 1. The solenoid valve 16 is opened when water is supplied to the humidifying tank 10 described above.

A duct 17 is connected to the air inlet of another indoor unit, and is connected to the upstream side of the blower unit 7 through the outer case 1 and the inner case 4.

In an indoor unit having such a configuration, when the screws 3 are removed and the lower outer case member 1b of the outer case 1 is removed, the state shown in FIG. 2 is obtained, and the cover 15a,
By removing 15b, the electronic equipment storage box 14a,
14b, as well as the humidifying tank 10 and the solenoid valve 16. Next, remove the screws 6 and remove the lower inner case member 4b of the inner case 4, and the blower unit 7,
Heat exchangers 8a, 8b and drain pump 9 appear,
These can be maintained.

(Effects of the invention) As described above, according to this invention, there is an outer case in which the upper and lower outer case members are removably connected, and the upper and lower inner case members are housed in this outer case and are detachably connected to each other. It has a combined inner case, and a blower unit and heat exchanger that are removably housed in the inner case, so when performing maintenance on the blower unit, for example, the lower outer case member and the lower inner case member can be removed. This can be done from below, making maintenance operations easier.

[Brief explanation of drawings]

Figure 1 is an exploded perspective view of an indoor unit according to an embodiment of this invention, Figure 2 is a bottom view of the above indoor unit with the lower outer case member removed, and Figure 3 is a cross-sectional view of the same indoor unit. It is a diagram. 1...Outer case, 1a...Upper outer case member, 1b...Lower outer case member, 4...Inner case, 4a...Upper inner case member, 4b...Lower inner case member, 7...Blower unit, 8
a, 8b... Heat exchanger.

Claims (1)

[Scope of utility model registration request] an outer case made up of upper and lower outer case members removably connected; an inner case housed in the outer case and made up of upper and lower inner case members removably connected; A hanging indoor unit for air conditioning that has a blower unit and a heat exchanger.