JP2001201115A - Air conditioner - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an air conditioner, in which a gas engine and a compressor are compactly housed in a machine chamber, so that the engine and compressor is easily serviced. SOLUTION: In the air conditioner provided with the machine chamber 60, housing the compressor 2 driven by means of the gas engine 3, the engine 3 and compressor 2 are arranged vertically in two stages in the chamber 60 and connected to each other through a drive belt 37. In addition, a maintenance space 61 is provided adjacent to the belt 37.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a structure of an air conditioner having a compressor driven by a gas engine in a machine room.

[0002]

2. Description of the Related Art In general, there is known an air conditioner having a machine room in which a compressor driven by a gas engine is housed.

In this type, in addition to various components constituting a compressor and a refrigeration cycle driven by a gas engine in a machine room, various components such as a DC power supply for a starter required for driving the gas engine, and a gas engine An air cleaner, an exhaust muffler, and the like that constitute the air supply / exhaust system are arranged.

[0004]

As described above, when a plurality of parts are stored in the machine room, no extra space is left inside the machine room. There is a problem that repair and maintenance become difficult.

In particular, in the conventional configuration, the output shaft of the gas engine is directly connected to the rotating shaft of the compressor by a coupler.
These extend horizontally in the machine room, and as a result, there is a problem that it is difficult to make the machine room compact.

It is an object of the present invention to provide an air conditioner which solves the above-mentioned problems of the prior art, stores a gas engine and a compressor compactly in a machine room, and also facilitates maintenance. It is in.

[0007]

According to the first aspect of the present invention,
In an air conditioner provided with a machine room containing a compressor driven by a gas engine, a gas engine and a compressor are arranged in upper and lower stages in this machine room, and these are connected by a drive belt. , A maintenance space is provided adjacent to.

In the present invention, the gas engine and the compressor are arranged in two stages, upper and lower, and are connected by a drive belt.
Compared with the conventional one, they do not extend long inside the machine room in the horizontal direction. As a result, the size of the machine room can be reduced.

Further, since the maintenance space is provided adjacent to the drive belt, maintenance becomes easy, for example, when the drive belt becomes loose.

According to a second aspect of the present invention, in the first aspect, a gas engine and a compressor are arranged in a substantially central portion of the machine room in two upper and lower stages, and these are connected by a drive belt. A maintenance space is provided adjacent to the drive belt, and various components constituting the refrigeration cycle are arranged in a deep portion of the maintenance space.

In the present invention, since various parts constituting the refrigeration cycle are arranged in the back of the maintenance space,
When a failure occurs in these parts, maintenance of these failed parts becomes easy.

According to a third aspect of the present invention, in the second aspect, various parts required for driving the gas engine are arranged on a side opposite to the maintenance space across the gas engine and the compressor. It is a feature.

In the present invention, since various parts required for driving the gas engine are arranged on the opposite side of the maintenance space with the gas engine and the compressor therebetween, the various parts can be efficiently and compactly stored in the machine room. Can be.

According to a fourth aspect of the present invention, there is provided the air cleaner and the exhaust muffler constituting the supply / exhaust system of the gas engine at the back of the gas engine and the compressor. Are arranged.

According to the present invention, since the air cleaner and the exhaust muffler constituting the gas supply / exhaust system of the gas engine are arranged at the back of the gas engine and the compressor, various parts can be efficiently and compactly stored in the machine room.

[0016]

An embodiment of the present invention will be described below with reference to the accompanying drawings.

In FIG. 1, reference numeral 1 denotes an outdoor unit. A refrigerant compressor 2 is stored in the outdoor unit 1. The compressor 2 has a gas engine 3 as described later.
Are connected. An oil separator 5 is connected to the compressor 2 via a pipe 4.
Is connected to a four-way valve 7 via a pipe 6. An outdoor heat exchanger 11 is connected to the four-way valve 7 via a pipe 9. 12 is an outdoor blower. An outdoor electric valve 15 is connected to the outdoor heat exchanger 11 via a pipe 13, and the outdoor electric valve 15 is connected to the receiver tank 19 via a pipe 17.
Are connected, and a pipe 21 is connected to the receiver tank 19.

A plurality of indoor units 2 are connected to the pipe 21.
3A to 23E are connected in parallel. The indoor units 23A to 23E include indoor electric valves 25A to 25E, indoor heat exchangers 27A to 27E, and indoor blowers 28A to 28E.
E, which are connected in parallel to the pipe 29.
The pipe 29 is connected to the four-way valve 7. The four-way valve 7 is connected to the double-pipe heat exchanger 33 via the pipe 31, and further connected to the accumulator 35 and the suction pipe of the compressor 2.

A pulley 3 is mounted on the output shaft 3A of the gas engine 3.
The V-belt 37 is hung on the pulley 36, and the V-belt 37 is hung on a pulley 38 fixed to the rotating shaft 2 </ b> A of the compressor 2.

At the time of heating operation, the refrigerant discharged from the compressor 2 driven by the gas engine is switched in flow path by the four-way valve 7 as shown by a dotted line, and
It is supplied to the indoor units 23A to 23E.

The refrigerant supplied here is supplied to the indoor heat exchanger 2
After heating the room by exchanging heat at 7A to 27E, pipe 2
1, a receiver tank 19, an outdoor electric valve 15, an outdoor heat exchanger 11, a pipe 9, a four-way valve 7, and then a double-pipe heat exchanger 3.
3 and is returned to the suction pipe of the compressor 2 via the accumulator 35.

In the cooling operation, the refrigerant discharged from the compressor 2 is supplied to the outdoor heat exchanger 11 through the pipe 9 after the flow path is switched by the four-way valve 7 as shown by the solid line. Then, the outdoor electric valve 15, the receiver tank 1
9, is supplied to the indoor units 23A to 23E via the pipe 21.

The refrigerant supplied here is supplied to the indoor heat exchanger 2
After cooling the room by exchanging heat at 7A to 27E, the piping 2
9, through the four-way valve 7, to the double-pipe heat exchanger 33, through the accumulator 35, and back to the suction pipe of the compressor 2.

The gas engine 3 is supplied with air fuel introduced through an air cleaner 41, a gas shutoff valve 42,
The gas fuel introduced via the zero governor 43 and the electric valve 44 is mixed and supplied. The exhaust of the gas engine 3 is performed via an engine exhaust heat exchanger 45 and an exhaust muffler 46.

An oil tank 80 is connected to a sub oil pan 47 via an electric valve 48. The sub oil pan 47 is connected to an oil pump 81.
Is connected to the gas engine 3. Oil from an oil tank 80 is supplied to the gas engine 3 via a sub oil pan 47, and the oil is used for lubrication of the gas engine 3.

Cooling water circulates through an engine water jacket (not shown) of the gas engine 3. The cooling water reaches the wax valve 50 via the water pipe 49 after cooling the gas engine 3.

The outdoor heat exchanger 11 is connected to the wax valve 50 via a water pipe 51. In the outdoor heat exchanger 11, the pipe through which the refrigerant flows and the water pipe 51 are separately provided as described above.

During the heating operation described above, the outdoor heat exchanger 1
When the refrigerant flowing through 1 is heated, the heating effect is increased correspondingly.

When the temperature of the hot water flowing through the water pipe 49 becomes equal to or higher than a predetermined temperature, the wax valve 50 reacts and the hot water is supplied to the outdoor heat exchanger 11 through the water pipe 51. Thereby, the refrigerant flowing through the refrigerant pipe is heated. Thereby, it becomes a heat source of the heat pump, and the heating effect is enhanced.

The hot water that has passed through the outdoor heat exchanger 11 reaches a motor-driven three-way valve 53 via a water pipe 52, from which it passes through a water pipe 54, a cooling water pump 55, and further through an engine exhaust heat exchanger 45. Returned to the engine jacket.

When the temperature of the hot water flowing through the water pipe 49 is equal to or lower than a predetermined temperature, the heating effect cannot be enhanced even when the hot water is supplied to the outdoor heat exchanger 11.

Then, the hot water reaches the suction pipe of the cooling water pump 55 via the water pipe 56 via the wax valve 50, and is returned directly to the engine jacket via the engine exhaust heat exchanger 45.

When the engine cooling water is insufficient, FIG.
Is replenished through a water pipe 70 from a reserve tank 69 shown in the upper middle.

In this embodiment, the outdoor unit 1 is constructed in two stages, the upper and lower stages, the lower stage as a machine room, and the upper stage as a heat exchange room.

FIG. 2 is a plan view of the lower machine room, and FIG.
FIG. 4 is a front view of the machine room, and FIG. 4 is a rear view of the machine room.

As shown in FIG. 2, the gas engine 3 and the compressor 2 are installed at a substantially central portion of the machine room 60. The gas engine 3 and the compressor 2 are arranged in two stages, upper and lower, as shown in FIG.
6 is fixed, and a V-belt 37 is hung on the pulley 36, and the V-belt 37 is hung on a pulley 38 fixed to the rotating shaft of the compressor 2. Then, as shown in FIG. 2, the V belt 3 is exposed so that the V belt 37 is exposed.
7, a maintenance space 61 is provided, and in the interior of the maintenance space 61, the oil separator 5, the four-way valve 7, the outdoor electric valve 15, the accumulator 3
5 and the like are arranged.

The receiver tank 19 shown in FIG. 1 is an optional part among various parts constituting the refrigeration cycle.

In this embodiment, the maintenance space 6
In order to add this optional part to the additional space, it is sufficient to install it in the maintenance space 61.
This can easily be added to the equipment.

In this embodiment, the gas engine 3 and the compressor 2 are arranged in two stages, upper and lower, and they are connected by the V-belt 37. As a result, the machine room 60 does not extend long in the horizontal direction, and as a result, the size of the machine room 60 can be reduced.

Therefore, the surplus space is represented by V
Since the maintenance space 61 is provided adjacent to the belt 37, maintenance becomes easy when the V-belt 37 becomes loose, for example. In the case of the driving method using the V belt 37, the V belt 37
After about 000 hours of use, troubles such as slipping and breaking may occur, and the belt needs to be replaced.

In the present embodiment, since the maintenance space 61 is provided adjacent to the V-belt 37, the belt can be replaced without removing the gas engine 3 and the compressor 2 from the machine room 60 without removing them. Become.

Further, since various parts groups A constituting the refrigeration cycle are arranged at the back of the maintenance space 61,
When a failure or the like occurs in these parts, maintenance of the failed parts or the like can be easily performed.

As shown in FIG. 2, the sub oil pan 47, the DC power source 63 for the starter, the reserve tank 69, the cooling water pump 55 are located on the opposite side of the maintenance space 61 across the gas engine 3 and the compressor 2. Various component groups B required for driving the gas engine 3 are arranged. According to this configuration, the various component groups B can be efficiently and compactly stored in the machine room 60.

Further, as shown in FIG.
The engine exhaust heat exchanger 45, the air cleaner 41, the exhaust muffler 46, and the like, which are a component group C that constitutes the supply / exhaust system of the gas engine 3, are disposed on the side and the back of the compressor 2. Reference numeral 71 denotes an electrical box. In this configuration, the various component groups C can be efficiently and compactly stored in the machine room 60.

In this embodiment, the equipment such as the refrigerant piping system A, the equipment B required for driving the gas engine 3, the supply / exhaust system C of the gas engine 3, etc. are integrated for each system configuration and the machine room 6
Since they are arranged at zero, assembly work and the like are simplified.

Although the present invention has been described with reference to one embodiment, it is apparent that the present invention is not limited to this.

[0047]

According to the present invention, the gas engine and the compressor are arranged in two stages, upper and lower, and they are connected by a drive belt. It does not extend, and as a result, the machine room can be made compact.

Further, since the maintenance space is provided adjacent to the drive belt, maintenance becomes easy, for example, when the drive belt is loosened.

[Brief description of the drawings]

FIG. 1 is a circuit diagram showing an embodiment of an air conditioner according to the present invention.

FIG. 2 is a plan view of a machine room.

FIG. 3 is a front view of a machine room.

FIG. 4 is a rear view of the machine room.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Outdoor unit 2 Compressor 3 Gas engine 5 Oil separator 7 Four-way valve 19 Receiver tank 35 Accumulator 37 V belt 41 Air cleaner 45 Engine exhaust heat exchanger 46 Exhaust muffler 47 Sub oil pan 60 Machine room 61 Maintenance space 63 DC power supply for starter 69 Reserve tank

Claims (4)

[Claims] An air conditioner having a machine room in which a compressor driven by a gas engine is housed is provided with a gas engine and a compressor arranged in two stages in the machine room, and these are connected by a drive belt. And a maintenance space provided adjacent to the drive belt. 2. A gas engine and a compressor are disposed in a substantially central portion of the machine room in two stages, upper and lower, connected by a drive belt, and a maintenance space is provided adjacent to the drive belt. The air conditioner according to claim 1, wherein various components constituting the refrigeration cycle are arranged in a deep part of the space. 3. A gas engine and a compressor, wherein various parts required for driving the gas engine are arranged on a side opposite to a maintenance space with respect to the compressor.
The air conditioner as described in the above. 4. The gas engine according to claim 1, wherein an air cleaner and an exhaust muffler constituting a supply / exhaust system of the gas engine are arranged in a back portion of the gas engine and the compressor. Air conditioner.