JPH0948230A - Ceiling-mounted air conditioner for vehicles - Google Patents

Abstract

(57) [Abstract] [PROBLEMS] To provide a rooftop air conditioner for a vehicle, which enables inspection and maintenance of an air filter without removing an indoor panel, and has improved maintainability and handleability. SOLUTION: A filter support girder having grooves facing each other is provided in an air intake port of an indoor panel that is connected to an air conditioning unit mounted on a ceiling of a vehicle, and a frame portion of an air filter is moved into the groove. The interior panel is provided with the notch for inserting the air filter as much as possible.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a ceiling-mounted air conditioner for a vehicle which is installed and used above the ceiling of a special vehicle such as a camper, a medical vehicle, a welfare vehicle, and a broadcast vehicle.

[0002]

2. Description of the Prior Art For air conditioning of special vehicles such as campers, medical vehicles, welfare vehicles, broadcast vehicles, etc., an AC generator installed on the ceiling of the vehicle and mounted on the vehicle while the vehicle is running. In addition, a ceiling-mounted air conditioner for a vehicle (commonly called a rooftop air conditioner for a vehicle) that air-conditions the inside of the vehicle by using a commercial power source while the vehicle is stopped at a campsite or the like is used.

A conventional example of this type of air conditioner is shown in FIGS. 3 is a transverse sectional view thereof, FIG. 4 is a longitudinal sectional view thereof, FIG. 5 is a sectional view taken along the line CC of FIG. 3, and FIG. 6 is a plan view of an indoor panel.

3 to 6, a rectangular opening 101 for guiding the air inside the vehicle to an indoor unit 1 which will be described later is formed in the ceiling 100 of the vehicle, and the opening 101 is sandwiched on the outside of the vehicle on the upper surface of the ceiling 100. An outdoor unit 1 and an indoor panel 2 are installed on the inside of the lower surface of the vehicle.

The outer shell of the outdoor unit 1 is formed of a horizontal casing 3, and the interior of the casing 3 is partitioned by a partition plate 4 into an air conditioning room 5 and a machine room 6.
An intake passage 7 is formed in the lower surface of the air conditioning chamber 5, an outside air intake port 8 is formed in the rear surface and the left side surface of the machine room 6, and an outside air outlet port 9 is formed in the right side surface.

An indoor heat exchanger 10 and an indoor sirocco fan 11 are arranged in the air conditioning room 5, and the machine room 6 is also provided.
Inside, a compressor 12, an outdoor heat exchanger 13, an outdoor sirocco fan 14 and an electric motor 15 are arranged. The compressor 12, the outdoor heat exchanger 13, and the indoor heat exchanger 10 are connected to each other via a refrigerant pipe via a four-way switching valve (not shown), a throttle mechanism, an accumulator, and the like.
Further, the rotor 11A of the indoor sirocco fan 11 and the rotor 14A of the outdoor sirocco fan 14 are the electric motor 1
5 are connected to the tips of both output shafts.

As shown in FIGS. 5 and 6, the indoor panel 2 is formed in a rectangular shallow dish shape, and has a blown air passage 21 formed at the center thereof and an upper end opening thereof. The blown air connection port 22 and the lower surface opening serve as an air blowout port 23. Further, two suction ports 24 are formed on the lower surface of the indoor panel 2 along two opposite left and right sides. Further, the outlet louver 25 is provided at the outlet 23.
However, a suction grill 26 is installed at the suction port 24, and an air filter 27 is attached inside the suction grill 26.

In the installed state of the air conditioner, the blowout air connection port 22 is connected to the blowout port 11C of the fan casing 11B of the indoor sirocco fan 11 of the outdoor unit 1.

While the vehicle rooftop air conditioner is operating, the vehicle is driven by an engine (not shown) to be energized by an AC generator (not shown) that generates electric power, and the vehicle is stopped at a campsite or the like. Is energized from a commercial power source to drive the compressor 12 and the electric motor 15.

When the compressor 12 is driven, the refrigerant flows through the compressor 12, the four-way switching valve, the outdoor heat exchanger 13, the expansion mechanism, the indoor heat exchanger 10, and the compressor 12 in this order during the cooling operation. The gas-liquid two-phase refrigerant that circulates and is adiabatically expanded by the throttling mechanism and has a low pressure and low temperature flows into the indoor heat exchanger 10, cools indoor air and evaporates, and then flows out as a gas refrigerant.

During the heating operation, the refrigerant is the compressor 1
A high-pressure gas and a high-temperature gas discharged from the compressor 12 are circulated through the 2-, 4-way switching valve, the indoor heat exchanger 10, the throttle mechanism, the outdoor heat exchanger 13, and the compressor 12 in this order. The refrigerant flows in, heats the indoor air to condense and liquefy, and then flows out.

At the same time, when the electric motor 15 is operated,
The rotors 11A and 14A of the indoor sirocco fan 11 and the outdoor sirocco fan 14 are rotationally driven. Then, the air in the vehicle is sucked from the suction port 24 on the lower surface of the indoor panel 2, and the dust contained in the air is captured in the process of passing through the suction grill 26 and the air filter 27, and the air on the lower surface of the casing 3 of the outdoor unit is captured. It enters the air conditioning room 5 through the suction passage 7.

Then, in the process of passing through the gap between the fins of the indoor heat exchanger 10, this air is cooled or heated by being heat-exchanged with the refrigerant flowing in the tube to which the fins are fixed, so that the indoor sirocco fan 11 Is sucked into the fan casing 11B from the one side opening. The air in the sirocco fan 11 is urged by the rotor 11A, enters the outlet air air passage 21 through the outlet air connection port 22 of the indoor panel 2 from the outlet 11C, is guided to the outlet louver 25 from the outlet 23, and is inside the vehicle. To be blown out.

On the other hand, outside air is sucked into the machine room 6 through the outside air inlet port 8 and, in the process of passing through the fin gap of the outdoor heat exchanger 13, exchanges heat with the refrigerant flowing in the tube to which the fins are fixed. By doing so, the refrigerant is cooled, condensed (during cooling operation) or heated and evaporated (during heating operation), and is sucked into the fan casing 14B of the outdoor sirocco fan 14 through the openings at both ends thereof. Then, this air is urged by the rotor 14A, passes through an outlet (not shown), and is blown out from the outside air outlet 9.

[0015]

In the above conventional rooftop air conditioner for a vehicle, when the air filter 27 is inspected and cleaned, first the entire interior panel 2 is loosened, and the fastening screws or the like are loosened. Therefore, it is necessary to take out the air filter 27 from the indoor panel 2 after removing it downward.

Therefore, every time the air filter 27 is cleaned, the work of removing the indoor panel, which is heavy and has a large external dimension, is added, and the number of man-hours for cleaning the air filter is increased, and maintainability and handleability are deteriorated. I have a problem of doing.

The object of the present invention is to enable inspection and maintenance of the air filter without removing the interior panel,
It is intended to provide a rooftop air conditioner for a vehicle, which has improved handleability.

[0018]

SUMMARY OF THE INVENTION According to the present invention, a filter support girder having grooves facing each other is provided in an air inlet of an indoor panel connected to an air conditioning unit mounted on a ceiling of a vehicle. The gist is that the frame part of is movably fitted in the groove, and the notch for inserting the air filter is provided in the indoor panel, and the concrete means is to connect the inside to the air conditioning room and the machine room. An air conditioning unit including a partitioned casing, in which the indoor heat exchanger and the indoor fan are disposed on the air conditioning room side, and the compressor, the outdoor heat exchanger, and the outdoor fan are disposed on the machine room side. It is installed outside the vehicle on the ceiling upper surface of the vehicle, and on the inside of the vehicle lower surface of the ceiling of the vehicle, a dish-shaped indoor panel that has a suction port and an air outlet on the lower surface and is connected to the air conditioning unit is installed. , The indoor unit inside the air conditioning unit In the vehicle ceiling-mounted air conditioner that sucks in the vehicle interior air from the suction port of the indoor panel by the engine, passes through the indoor heat exchanger, and then blows into the vehicle from the air outlet of the indoor panel to perform air conditioning, A filter support girder having grooves facing each other is provided on the upper surface side of the suction port provided in the indoor panel along at least two opposite sides of the suction port, and the filter support is provided on the indoor panel. A ceiling mount type for a vehicle, comprising a notch for inserting an air filter for inserting the frame portion of the air filter into the groove of the girder and installing the air filter on the upper surface of the indoor panel suction port. In the air conditioner.

Since the present invention is constructed as described above, the air filter can be slid in the groove of the filter supporting girder at the both end edges of the frame, and if the air filter is pulled out in the horizontal direction. It can be removed from the interior panel.

Therefore, when inspecting and cleaning the air filter, with the indoor panel still attached to the air conditioning unit,
The air filter can be easily pulled out from the indoor panel by using the groove of the filter supporting girder as a guide, and after inspection and cleaning, the air filter can be attached to the indoor panel in the reverse order of the above.

A second means of the present invention is the first means according to the first means, wherein the air outlet is provided in a central portion of the indoor panel, and the suction ports are provided on both sides of the air outlet in the front-rear direction. The filter supporting girders are provided along the front and rear sides of the suction port, and the air filter insertion notches are provided on the left and right sides of the indoor panel.

According to this structure, the air filter can be attached and detached from the notches on both sides of the indoor panel, and the handleability is further improved. Further, since the air filter can be attached and detached in the horizontal direction, it does not fall off due to the vibration of the vehicle.

[0023]

Embodiments of the present invention will be described below in detail with reference to the drawings. FIG. 1 is a plan view of an interior panel of a vehicle rooftop air conditioner according to an embodiment of the present invention, and FIG. 2 is a sectional view taken along line BB of FIG. The arrangement of each device is the same as in FIG.

1 and 2, reference numeral 2'denotes an indoor panel. As shown in FIG. 4, an outer peripheral side plate 28 of the indoor panel is attached to the ceiling 100 of the vehicle, and the air connection port 22 of the air duct 21 is located outside the room. It is connected to the discharge port of the sirocco fan 11 of the air conditioning unit 1.

Reference numeral 24 is an air inlet of the indoor panel 2 ',
Reference numeral 26 is a suction grille, 21 is an air duct, and 22 is an air connection port for blown air. As shown in FIG. 1, the air connection port 22 for air blowout is provided at a substantially central portion of the indoor panel 2 '.
And an air passage 21 are provided, and the suction port 2 is provided on both sides of the air passage 21.
4, 24 are provided.

The interior panel 2 ', like the conventional one shown in FIGS. 3 to 6, has a rectangular shallow dish shape, and is provided on the left and right sides along the suction port 24 of the side plate 28 on the outer periphery. The notch 29 is provided. Further, a filter support girder 30 is fixed to the upper surface of the bottom plate of the indoor panel 2'along the front and rear sides of the suction port 24, and a slide groove 31 is opened in the filter support girder 30 toward the inside of the suction port 24. ，
31 is engraved.

On the other hand, the air filter 27 'is fixed to the filter material 27'A made of a resin net or the like and the opening 27'C formed in the resin plate-shaped frame 27'B by a method such as adhesion. The structure is as follows. A grip 27'D is integrally formed on the plate-shaped frame 27'B fitted in the groove 31. In addition, in the drawing near the suction port 24 on one side (the upper half of FIG. 1) of FIG.
7'is shown removed.

29 and 29 are side plates 28 of the interior panel 2 '.
Is a notch formed by opening a portion facing two sides facing the suction ports 24, 24.

Accordingly, the air filter 27 'enters the upper portions of the suction ports 24, 24 while being guided by the slide grooves 31 of the filter supporting girder from both the notches 29, 29, and covers the suction ports 24, 24. It will be fixed.

In the rooftop air conditioner for a vehicle constructed as described above, when the air filter 27 'is removed from the machine for inspection and cleaning, the handle 2 of the filter is used.
When the air filter 27 'is pulled toward you (outside the indoor panel 2') by holding 7'D, the plate-shaped frame 27'B of the air filter 27 'is guided by the slide groove 31 of the filter support girder 30 and separated from the suction port 24, It is removed from the interior panel 2 '.

Therefore, the air filter 27 'can be removed while the interior panel 2'is still attached to the vehicle.

In order to install the air filter 27 'on the indoor panel 2'after checking and cleaning, the plate frame 27'B is fitted into the slide groove 31 of the filter supporting girder 30 and the handle D'is held.
When the air filter 27 'is pushed in until it comes into contact with the side plate 28 of the indoor panel 2', the air filter 27 'is fixed so as to cover the suction port 24.

As described above, in this embodiment,
The air filter can be removed and attached with one touch without touching the indoor panel 2 '.

[0034]

The present invention is configured as described above.
According to the invention of claim 1, at the time of inspecting and cleaning the air filter, the air filter can be easily pulled out from the indoor panel while the indoor panel is still attached to the air conditioning unit, using the groove of the filter supporting girder as a guide. After inspection and cleaning, the air filter can be attached to the indoor panel in the reverse order of the above.

As a result, the number of man-hours for inspecting and cleaning the air filter is greatly reduced, and since the indoor panel does not need to be removed unlike the conventional one, one worker can easily carry out the above work. Also from this aspect, the number of cleaning steps can be reduced. Therefore, it is possible to obtain a rooftop air conditioner for a vehicle, which is much easier to maintain and handle than conventional ones.

According to the second aspect of the present invention, in addition to the above, the air filter can be attached and detached from the notches on both sides of the indoor panel, and there is an effect that the handleability is further improved. Furthermore, since the air filter can be attached and detached in the horizontal direction, it does not fall off due to the vibration of the vehicle and can be used stably.

[Brief description of drawings]

FIG. 1 is a plan view of an indoor panel of a vehicle rooftop air conditioner according to an embodiment of the present invention.

FIG. 2 is a sectional view taken along line BB of FIG. 1;

FIG. 3 is a plan layout view of a conventional vehicle rooftop air conditioner.

FIG. 4 is a cross-sectional view corresponding to FIG.

5 is a cross-sectional view taken along line CC of FIG.

FIG. 6 is a plan view seen from the indoor panel side corresponding to FIG.

[Explanation of symbols]

 1 Outdoor Unit 100 Vehicle Ceiling 2'Indoor Panel 3 Casing 4 Partition Plate 5 Air Conditioning Room 6 Machine Room 22 Air Connection Port 24 Suction Port 27 'Air Filter 27'A Filter Material 27'B Plate Frame 27'D Handle 28 Side Plate 29 Notch 30 Filter support girder 31 Slide groove

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Hideo Honda 3-chome, Asahimachi, Nishibiwajima-cho, Nishikasugai-gun, Aichi Prefecture Mitsubishi Heavy Industries, Ltd. Air Conditioning Factory

Claims (2)

[Claims] 1. A casing having an interior partitioned into an air conditioning room and a machine room, an indoor heat exchanger and an indoor fan are provided on the air conditioning room side, and a compressor and outdoor heat are provided on the machine room side. An air conditioning unit including an exchanger and an outdoor fan is installed outside the vehicle on the ceiling upper surface of the vehicle, and has a suction port and an air outlet on the lower surface inside the vehicle ceiling lower surface. Install a dish-shaped indoor panel connected to the unit,
A vehicle ceiling installation that performs air conditioning by sucking in-vehicle air from the suction port of the indoor panel by the indoor fan in the air conditioning unit, passing through the indoor heat exchanger, and then blowing out from the air outlet of the indoor panel into the vehicle In a type air conditioner, a filter support girder having grooves facing each other is provided on the upper surface side of the suction port provided in the indoor panel along at least two opposing sides of the suction port,
The indoor panel is provided with an air filter insertion notch for inserting the frame portion of the air filter into the groove of the filter supporting girder and installing the air filter on the upper surface of the indoor panel suction port. A ceiling mounted air conditioner for vehicles. 2. The air outlet is provided in the central portion of the indoor panel, the suction ports are provided on both sides of the air outlet along the front-rear direction, and the filter support is provided along both front and rear sides of the suction port. 2. The ceiling mounted air conditioner for a vehicle according to claim 1, wherein a beam is provided and the notch for inserting the air filter is provided on both left and right sides of the indoor panel.