JP3348957B2 - Air conditioner - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an air conditioner.

[0002]

2. Description of the Related Art As an air conditioner, there is an air conditioner disclosed in, for example, JP-A-1-200131. The air conditioner includes an engine room in which an engine and the like are arranged, an outdoor heat exchanger for refrigerant provided above the engine room,
And an outdoor air-conditioning unit having an outdoor heat exchange chamber provided with a heat exchanger (radiator) for engine cooling water. The heat exchangers for the refrigerant and the engine cooling water are overlapped and arranged vertically on the front and rear side surfaces of the outdoor heat exchange chamber. In this air conditioner, outside air is introduced into the outdoor heat exchange chamber from the front and rear side surfaces to exchange heat between the outside air and the refrigerant or the engine cooling water.

[0003]

In order to improve the heat exchange capacity of the outdoor air conditioning unit, it is effective to increase the heat exchange area of the outdoor heat exchanger. It is also desirable that the flow rate of air introduced into the outdoor heat exchanger is uniform over the entire surface of the outdoor heat exchanger, and for that purpose, it is important that air flows in a direction perpendicular to the heat exchange surface. .

[0004] On the other hand, a heat exchange fan for sucking outside air into the outdoor heat exchange chamber is disposed at an upper end opening of the heat exchange chamber. When the heat exchanger is simply vertically arranged as in the above-described conventional apparatus and the heat exchanger is extended in the vertical direction to increase the heat exchange area, the airflow flowing into the heat exchanger becomes At the upper part of the heat exchanger, the air flows at a right angle to the heat exchanger, but at the lower part, the air flows obliquely toward the position where the fan is arranged, so that the amount of air introduced into the lower part decreases. , Heat exchange efficiency is reduced.

In the above-mentioned conventional apparatus, the outdoor heat exchangers are simply arranged up and down along the front and rear sides of the outdoor heat exchange chamber. Need to be larger. However, if the front and rear sides are made larger, the outdoor heat exchange chamber, and hence the outdoor air conditioning unit, becomes larger, which causes a problem of an increase in weight and an increase in a space for arrangement.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned conventional problems, and it is possible to increase the heat exchange area while suppressing the size of the air conditioning unit, and to introduce the heat exchange area into the heat exchanger while increasing the heat exchange area. It is an object of the present invention to provide an air conditioner capable of equalizing a flow rate of air to be supplied and improving heat exchange capacity.

[0007]

According to the first aspect of the present invention, there is provided a portable telephone.
The engine room in which the engine is located and the equipment
A piping chamber in which pipes for connecting the heat exchangers are disposed, an outdoor heat exchange chamber in which heat exchangers are disposed on the front and rear side surfaces, and an air disposed in an upper end opening of the outdoor heat exchange chamber to move air from below. An air conditioner having an outdoor air-conditioning unit having a heat exchange blower fan for blowing air to the engine room and the piping room and the outdoor heat
An exchange chamber is defined by a partition plate, the heat exchanger is composed of an upper heat exchanger and a lower heat exchanger, and the upper and lower heat exchangers before and after the front and rear sides of the outdoor heat exchange chamber. The lower heat exchanger is disposed so as to be inclined inward downward from the position near the front and rear sides, and the lower heat exchanger is disposed on the partition plate.
For ventilation so that it is located between the lower ends of the lower heat exchanger
An exhaust port is formed, and outside air is exhausted by the ventilation fan in the engine room.
Into the outdoor heat exchange chamber from the ventilation outlet
It is characterized by being discharged . According to a second aspect of the present invention, in the first aspect, the ventilation outlet is silenced.
And pass the exit of the muffling box through the partition plate
Each connecting the outdoor heat exchanger with each device in the piping room
Allow air to flow out of the pipeline and in the opposite direction
It is characterized by having been provided so that.

[0008]

According to the air conditioner according to the present invention, before the upper heat exchanger of the outdoor heat exchange chamber, along the rear side are arranged in the vertical direction, front, before the lower heat exchanger after, Arrange so that it inclines inward from the position near the rear side as you move downward.
Ventilation so that the plate is located between the lower ends of the heat exchanger
The exhaust port allows hot air in the engine room to exchange heat.
Avoids adverse effects on heat exchange efficiency without passing through the heat exchanger
it can.

Further, since the lower heat exchanger is arranged to be inclined inward, in the case of the same heat exchange area, the heat exchanger arrangement surface of the outdoor heat exchange chamber is smaller than that of the upper and lower heat exchangers. The unit can be kept from becoming larger, increasing its weight,
The problem of an increase in arrangement space can be avoided. Furthermore
According to the second aspect of the present invention, there is provided a method for discharging air from the engine room.
Surround the mouth with a muffling box and partition the opening of the muffling box.
At a distance from each conduit through the plate and in the opposite direction
The exhaust air from the engine room
Does not heat each of the pipelines, and has good corrosion resistance
The heat exchange effect of the heat exchanger
Nothing.

[0010]

Embodiments of the present invention will be described below with reference to the accompanying drawings. 1 to 12 illustrate an air conditioner driven by an engine according to an embodiment of the present invention. FIGS. 1 and 4 are a front view and a rear view, and FIGS.
5 is a plan view of a floor of an outdoor heat exchange chamber, FIG. 6 is a plan view of a pad, and FIG. 7 is a schematic plan view of a cross section of an engine room and a piping room. 8 is a front view of the electrical box,
9 is a cross-sectional view taken along the line IX-IX of FIG. 8, FIG. 10 is a left side view of the cross section in the engine room, FIG. 11 is an enlarged view of a water inlet of engine cooling water, and FIG.

In FIG. 12, which shows a schematic configuration of the apparatus of this embodiment, reference numeral 1 denotes an engine-driven air conditioner, which comprises an outdoor air conditioning unit 2 and an indoor air conditioning unit 3. The indoor air-conditioning unit 3 includes a refrigerant indoor heat exchanger 4, a decompression expansion valve 18, and a not-shown indoor heat exchange blower fan. The outdoor air-conditioning unit 2 includes an engine room 7 in which an engine 5, a compressor 6, 6, and the like are disposed, a main accumulator 8, a sub-accumulator 9, an electrical box 50, and a pipeline connecting each device. A piping chamber 10 is provided, and an outdoor heat exchange chamber 14 in which a refrigerant outdoor upper and lower heat exchangers 11 and 12 and an engine cooling water heat exchanger 13 and the like are disposed.

The engine 5 is a water-cooled gas fuel engine. A gas mixer 21b and an air cleaner 21c are connected to an intake port of the engine 5 via an intake pipe 21a. It is open to the outside through the wall and the top wall of the outdoor heat exchange chamber. The intake pipe 21a may be opened in the engine room 10 as described later.

The gas mixer 21b is connected to a gas fuel source by a gas line 22. A flow control valve 22a, governor 22b, and solenoid valve 22c are provided in the gas pipeline 22. An exhaust heat exchanger 23b, an exhaust silencer 23c, and a mist separator 23d are connected to an exhaust port of the engine 5 via an exhaust pipe 23a, and the exhaust pipe 23a opens above the heat exchange chamber 14. . Reference numeral 24a denotes a lubricating oil tank. When the amount of lubricating oil decreases, the solenoid valve 24b opens to supply lubricating oil by gravity.

A clutch 6a,
The compressors 6, 6 are connected via 6a. The discharge port of the compressor 6 is connected to the refrigerant outdoor upper and lower heat exchangers 11 and 12 through a refrigerant line 16a, a four-way valve 15 switched to a cooling operation position, and a refrigerant line 16b. The heat exchangers 11 and 12 are connected to the refrigerant indoor heat exchanger 4 via a refrigerant line 16c, a heat exchanger in the main accumulator 8, and a refrigerant line 17a, and the heat exchanger 4 is connected to the refrigerant line 17b. , A four-way valve 15, a refrigerant pipe line 16d, a main accumulator 8, and a sub-accumulator 9, which are connected to the suction ports of the compressors 6, 6.

An oil separator 19a for separating the lubricating oil in the refrigerant is provided in the middle of the refrigerant line 16a. 19b, it is returned to the main accumulator 8 via a solenoid valve 19c which is opened when the predetermined value is exceeded. The lubricating oil is also returned to the sub accumulator 9. The refrigerant line 16a is connected to the main accumulator 8 via an oil strainer 20a and a solenoid valve 20b that opens when the pressure in the tube is equal to or higher than a predetermined pressure, thereby avoiding an abnormal increase in refrigerant line pressure.

The cooling jacket 28 of the engine 5
b, when the cooling water temperature is lower than a predetermined value, the water pipe 29a
A low-temperature circulation circuit that circulates cooling water through a path of the cooling water pump 28a, the cooling jacket 28b, and the switching valve 28c is connected. The cooling jacket 28b
In the case where the cooling water temperature exceeds a predetermined value,
a to 29e, a cooling water pump 28a, a cooling jacket 28b, a switching valve 28c, a three-way valve 28d, a cooling water heat exchanger 13, a cooling water pump 28e, and an exhaust heat exchanger 23.
b, a high-temperature circulation circuit for circulating the cooling water through the path of the cooling water pump 28a is connected. Reference numeral 30a denotes a cooling water reservoir tank, which is connected to the cooling water heat exchanger 13 via a water supply pipe 30c and an inlet 30b. The switching valve 28 is provided at the inlet 30b.
One port of c is also connected. When the three-way valve 28d is switched, the engine cooling water is supplied to the water pipe 29d.
29 g of heater in the main accumulator 8
To supply heat to the refrigerant.

Next, a specific structure of the outdoor air conditioning unit 2 will be described with reference to FIGS. The casing 31 of the outdoor air-conditioning unit 2 mounts and fixes a floor plate 33 on a pair of bases 32, and stands uprights 34 at four corners. Each of the left side surfaces is connected by one ceiling beam (not shown), the floor plate is bent at the front and rear ends to form a floor plate 33a, and the front, rear, left, and right surfaces are front, rear, left, and right plates 37a to 37d. In this configuration, the ceiling surface is covered with a top plate 37e. In addition,
The ceiling board is bent at the front, rear, left and right ends, and each board or support 3
4 is formed. The front and rear side plates 37
Reference numerals a and 37b cover lower portions of the front and rear side surfaces of the casing 31 below a partition plate 39 described later.
Thereafter, the left and right plates 37a to 37d are detachable to ensure maintainability of each device.

The upper portion of the front and rear side plates 37a and 37b of the front and rear side surfaces of the casing 31, that is, the portion above the partition plate 39 is an outside air introduction opening, and each opening functions as a filter. Wire mesh 38a, 38b
Is detachably mounted. The top plate 37e is formed with a discharge opening 37f for discharging the introduced outside air upward. The discharge opening 37f allows the outside air to enter the outdoor heat exchange chamber 14 from the metal meshes 38a and 38b. An outdoor heat exchange blower fan 44 for sucking and discharging the air upward is provided. Reference numeral 38c denotes a wire net standing upright around the discharge opening 37f.

The partition plate 39 is for defining the outdoor heat exchange chamber 14, the engine room 7, and the piping room 10, and includes a central partition plate 40 constituting a ceiling of the engine room 7, and an engine room. It is composed of side partition plates 41a and 41b and piping room side partition plates 42a and 42b which form the ceiling of the piping room 10. The engine room side partition plates 41a and 41b and the pipe room side partition plates 42a and 42b are detachable upward.

Also, at the boundary between the central partition plate 40 and the pipe chamber side partition plates 42a and 42b, and outside the upper part of the front middle plate 44a constituting the front side wall of the engine room 7 (upper part on the side of the pipe chamber 10).
A gutter 48 (drain passage) is disposed in such a manner that it can be disassembled from the center and the pipe chamber side partition plates 40, 42a and 42b, that is, can be replaced with a new one. The gutter 48 is formed of a corrosion-resistant material, for example, a synthetic resin, and has a groove shape extending in the longitudinal direction (the left-right direction in FIG. 1) of the outdoor air-conditioning unit 2, that is, the direction in which the heat exchanger is disposed. It inclines so that it may become lower toward the right side (the right side in FIGS. 1 and 5).
The left end portion 48b located at the highest point of the gutter 48 can be exposed to the outside by removing the left side plate 37c or by providing an opening (cleaning hole).

A tubular vertical gutter (drain pipe) 43 is connected to the right end 48a located at the lowest part of the horizontal gutter 48 so as to be disassembled. The downspout 43 extends downward at a corner portion formed by the inner surface of the right side plate 37d and the outer surface of the front middle plate 44a constituting the front side wall of the engine room 10, and the drain port 43a opening at the lower end thereof is a floor plate. 36 and is directed outward. The downspout 43 can be replaced with a new one by removing the right side plate 37d.

The engine room side partition plates 41a, 41b,
Piping chamber side partition plates 42a, 42b, and center partition plate 40
Are inclined so as to become lower toward the above-mentioned gutter 40a. Therefore, rainwater or the like that has entered the outdoor heat exchange chamber 14 is immediately collected by the horizontal gutter 48 and discharged to the outside through the vertical gutter 43. Also, due to the above inclination, the engine room side partition plate 41
The positions of the outer ends of the a, 41b and the pipe chamber side partition plates 42a, 42b are increased, and the opening for removing the front and rear plates 37a, 37b to inspect and maintain the inside is increased.

The center partition plate 40 has two vent holes 40b for ventilating air so as to open into the outdoor heat exchange chamber 14. The outlet 40b is surrounded by a silence box 40c. Also this silence box 4
The opening 40d of Oc is located above the horizontal gutter 48, and is located downstream of the horizontal gutter 48 with respect to the discharge port 40b. This prevents rainwater or the like entering the outdoor heat exchange chamber 14 or rainwater or the like flowing in the horizontal gutter 48 from entering the engine room 7 from the discharge port 40b.

The side wall of the engine room 7 is connected to the rear side plate 37b,
The right wall 37d, the front middle plate 44a, and the left middle plate 44b, and the top wall is composed of the engine room side partition plates 41a and 41b and the center partition plate 4.
0, and the bottom wall is constituted by a bottom plate 45 arranged at a distance from the floor plate 33. The upper and lower end surfaces of the front middle plate 44a and the left middle plate 44b are the partition plate 3
9. The engine room 7 is air-tightly connected to the floor plate 33, and thus the engine room 7 is configured to have a soundproof structure.

The space between the bottom plate 45 and the floor plate 33 is a box-shaped air introduction chamber 46, and the bottom plate 45
Is a spout 45a for blowing ventilation air into the engine room 7.
Are arranged substantially uniformly over the entire surface. A piping chamber 10 is provided on the left middle plate 44b side of the air introduction chamber 46.
There are formed two engine room air intakes 46a that open inside, and a ventilation fan 47 is disposed in each of the air intakes 46a. Here, the drain port 43a of the downspout 43 is provided on the opposite side of the engine room air inlet 46a, that is, at a position separated from the air inlet 46a by charging and separating.

An electrical box 50 in which various control devices and the like are accommodated is provided on the inner side of the front plate 37a in the piping chamber 10. An air inlet 50a is formed on the bottom surface of the electrical component box 50, and a discharge port 50b is formed on the upper side surface. A gap serving as an air passage is opened between the bottom surface and the floor plate 33. The floor plate 33 is formed with a piping chamber air intake 33b for introducing outside air into the piping chamber 10, and outside air is introduced into the piping chamber 10 through the air intake 33b. A part of the introduced outside air is supplied from the air inlet 50a to the electrical equipment box 50.
And is discharged from the outlet 50 to ventilate the inside of the box. In addition, the drain port 43a of the downspout 43 is separated from the piping chamber air inlet 33b and is located below.

In the outdoor heat exchange chamber 14, the upper outdoor heat exchangers 11 and 11 are provided at the upper front and rear side surfaces, the lower outdoor heat exchanger 12 is installed at the lower rear side, and the lower heat exchanger 12 is used at the lower front side. An engine cooling water heat exchanger 13 is provided. Here, the upper heat exchangers 11, 11 are arranged vertically and along the wire meshes 38a, 38b, whereas the lower outdoor heat exchanger 12 and the cooling water heat exchanger 13 The cooling water heat exchanger 13 is provided with the above-described water inlet 30b at the upper end thereof.

The lower end of the cooling water heat exchanger 13 is located above the engine room side partition plates 41a and 41b and on the upper corner of the center partition plate 40 and the sound deadening box 40c.
The lower end of the refrigerant outdoor lower heat exchanger 12 is located on the lower corner portion of the central partition plate 40 and the sound deadening box 40c, further from the piping room side partition plates 42a, 42b and beyond the horizontal gutter 48.

Here, the pipes 29c, 29d, 16b, 16c, and 30c connecting the heat exchangers 13 for cooling water, the heat exchangers 11 and 12 for refrigerant, and each device in the piping chamber 10 are provided.
Are arranged on the left side plate 37c side of the piping chamber 10 and at the center in the front-rear direction, and are disposed at the left end of the center partition plate 40.
It penetrates through one sealing pad 49, and thus a plurality of conduits are sealed by one pad.
The pipelines connected to the heat exchangers 11 to 13 are obliquely routed along the oblique arrangement of the lower heat exchangers 12 and 13.

Next, the operation and effect of this embodiment will be described.

During the cooling operation, the four-way valve 15 is switched to the outdoor heat exchanger side shown in FIG. The above compressors 6, 6
The refrigerant gas which has been compressed by the heat and has become high temperature and high pressure is supplied to the refrigerant outdoor heat exchangers 11 and 12 through the refrigerant line 16a, the four-way valve 15, and the refrigerant line 16b, where it is cooled by the outside air. Liquefy. The liquefied high-pressure refrigerant liquid passes through the main accumulator 8 through the refrigerant line 16c, and is decompressed by the expansion valve 18 in the refrigerant line 17a.
The decompressed low-pressure refrigerant liquid evaporates by removing heat from the indoor air in the indoor heat exchanger 4, and the evaporated heat causes a cooling effect to cool the room. The evaporated refrigerant gas passes through the refrigerant pipe 17b, passes through the four-way valve 15, the refrigerant pipe 16d, returns to the compressor 6 through the main accumulator 8, the sub accumulator 9, and the same cycle is repeated.

During the heating operation, the four-way valve 15 is switched to the indoor heat exchanger side, and the high-temperature, high-pressure refrigerant gas from the compressors 6, 6 is transmitted to the indoor heat exchanger 4 via the refrigerant lines 16a, 17b. The air is supplied and cooled by the room air to be liquefied. In this case, the heat of condensation heats the room air to obtain a heating effect. The liquefied refrigerant liquid is decompressed by the expansion valve 18. The decompressed low-pressure refrigerant liquid evaporates by removing the heat of the outside air in the outdoor heat exchangers 11 and 12, returns to the compressor 6 via the main accumulator 8 and the sub-accumulator 9, and the same cycle is repeated. .

The heat exchange in the outdoor heat exchange chamber 14 is performed as follows. The outdoor heat exchange blower fan 44
, The outside air is sucked into the outdoor heat exchange chamber 14 from the wire meshes 38a and 38b and discharged upward from the ceiling opening 37f. In this case, as shown in FIG. 2, air flows in a substantially horizontal direction in the upper part of the outdoor heat exchange chamber 14 because it is close to the blower fan 44. And upper heat exchanger 1
1 is arranged vertically, the air passing through the upper heat exchanger 11 flows in a direction substantially perpendicular to the upper heat exchanger 11 as shown by an arrow a.

On the other hand, in the lower part of the outdoor heat exchange chamber 14, air flows obliquely upward because it is far from the blower fan 44.
On the other hand, since the lower heat exchangers 12 and 13 are inclined so that the lower ends thereof are located inside, the air passing through the lower heat exchangers 12 and 13 has the lower heat exchange as indicated by the arrow b. It flows in a direction substantially perpendicular to the vessels 12,13.

As described above, in this embodiment, the upper heat exchanger 1
1 and the lower heat exchangers 12, 13
Is inclined, the air flow in any heat exchanger flows substantially perpendicular to the heat exchanger, whereby the air flow can be made substantially uniform over substantially the entire surface of each of the heat exchangers 11 to 13, Heat exchange efficiency can be improved. By the way, when the lower heat exchangers 12 and 13 are vertically arranged, the air passage of the heat exchanger becomes oblique with respect to the flow direction of the air, so that the resistance increases and the amount of air decreases.

As for the lower heat exchangers 12 and 13,
Since it is arranged to be inclined inward, in the case of the same heat exchange area, the heat exchanger arrangement surface of the outdoor heat exchange chamber 14 may be narrower than that in the vertical direction, and it is possible to suppress an increase in the size of the outdoor air conditioning unit 2, It is possible to avoid the problem of an increase in weight and an arrangement space.

Further, since the water inlet (cap) 30b is provided at the upper end of the cooling water heat exchanger 13 which is arranged on the lower side and is inclined, it is easy to inject the cooling water.

Furthermore, since the lower heat exchangers 12 and 13 are inclined and the lower end is disposed on the central partition plate 40, the pipe compartment side partition plate 42a can be moved without moving the lower heat exchangers 12 and 13. , 42b and the engine room side partition plates 41a, 41
b can be attached and detached, and the work when inspecting the engine, each pipe, etc. from above is easy.

When used as an evaporator of the outdoor heat exchanger for a refrigerant (heating), water vapor in the atmosphere condenses on the surface of the heat exchanger, but the lower heat exchangers 12, 13 are condensed as described above. Since the heat exchanger 12 is disposed so as to be inclined and the lower end portion of the heat exchanger 12 exceeds the gutter 48, most of the condensed water flows along the inclined surface of the heat exchanger 12 and enters the gutter 48 or into the gutter 48. Fall to a nearby location. Therefore, the corrosion of the partition plates 41a and 41b and the piping room partition plates 42a and 42b can be suppressed to a lesser extent because condensed water is less likely to adhere to the partition plates.

Further, in the inclined arrangement of the heat exchangers 12, 13, the ventilation outlet 40b of the engine room 7 is located between the lower ends of the heat exchangers 12, 13.
High-temperature air in the engine room 7 does not pass through the heat exchanger, so that adverse effects on heat exchange efficiency can be avoided.

Drainage such as rainwater is performed as follows. When rainwater or the like that has entered the outdoor heat exchange chamber 14 from the wire meshes 38a and 38b falls on the partition plate 39, it flows into the horizontal gutter 48 from the partition plate 39, passes through the vertical gutter 43, and enters the outside through the drain port 43a. The water is drained below the floor plate 36 of the air conditioning unit 2.

In this case, the center, engine room side, and piping room side partition plates constituting the partition plate 39 are inclined so that the side gutter 48 side becomes lower. Can flow in. In this way, since rainwater and the like are drained in a short time without staying on the partition plate 39 constituting the floor member of the outdoor heat exchange chamber 14, the corrosion resistance of these floor members can be improved.

Further, since the partition plates 39 constituting the ceilings of the engine room 7 and the piping room 10 are arranged in an inclined manner,
The outside height of the front plate 10 can be increased, so that the opening when the front side plate 37a and the rear side plate 37b are removed can be enlarged, and the maintainability can be improved.

Further, since the horizontal gutter 48 and the vertical gutter 43 are arranged outside the engine room 10 and drained below the engine room, even if these gutters have holes, rainwater or the like enters the engine room. I will not do it. Therefore, rainwater or the like does not splash on a high-temperature engine or the like, and the heat shock resistance and corrosion resistance of the engine or the like can be improved. Drainage port 4 of downspout 43
Since 3a is located on the opposite side of the air inlet 36a of the engine room 7, rainwater or the like does not enter the engine room 7 and the failure of the engine due to water droplets being sucked into the engine can be prevented. The position of the drain 43a is lower than the piping room air inlet 33b, and since it is separated, rainwater does not enter the piping room 10. The air inlet 36a of the engine room 7 is separated from the pipe room air inlet 33b, and the air inlet 36a of the engine room 7 is
This means that it is further away from 3a.

If the horizontal gutter 48 and the vertical gutter 43 are made of synthetic resin, the corrosion resistance can be improved accordingly, and the floor gutter 48 and the vertical gutter 43 can be replaced as another part with other floor members, so that the overall durability can be improved. . This vertical gutter 43 can be replaced by removing the right side plate 37d, and the work is easy. Furthermore, since the left end portion 48b located on the upstream side of the gutter 48 can be exposed to the outside, cleaning from the outside is possible. The cleaning can be performed more efficiently by removing the right side plate 37c.

The ventilation of the piping room 10 and the engine room 7 is performed as follows. By the rotation of the ventilation fan 47, the outside air flows from the piping room air inlet 33 b of the floor plate 33 to the piping room 10.
Introduced within. At this time, a part of the introduced air ventilates the electrical equipment box 50, so that the electrical equipment can be cooled. The air introduced into the piping chamber 10 is supplied to the ventilation fan 47.
As a result, it is pushed into the air introduction chamber 46 formed between the bottom plate 45 and the floor plate 33 of the engine room 7, and is ejected from the ejection port 45 a into the entire engine room 7. The blasted air is exhausted into the outdoor heat exchange chamber 14 from the exhaust port 40b formed in the ceiling wall through the sound deadening box 40c while ventilating the engine room 7. In this case, since the air introduction chamber 46 is formed in a box shape extending over the entire bottom surface of the engine room 7 and a large number of ejection ports 45a are formed in the bottom plate 45, ventilation air can be introduced into substantially the entire area of the engine room 7 and ventilation. Can be performed reliably.

The ventilation air inlet 4 to the engine room 7
Since the opening 6a is opened in the piping chamber 10, the noise in the engine room 7 leaks into the piping chamber 10 but does not leak directly to the outside. In addition, since the piping chamber 10 has a large volume, the noise attenuating function is reduced. As a result, noise can be reduced. Further, an ejection port 45a formed in the bottom plate 45 of the engine room 7
Is opened in the box-shaped air introduction chamber 46, so that the air introduction chamber 46 also provides a damping function,
From this point, noise can be reduced. Although the rainwater splashes into the piping room 10 from the air inlet 33b to the piping room 10, it does not enter into the engine room 7.

Here, liquid refrigerant is stored in the main and sub accumulators 8 and 9 provided in the piping chamber 10, and a cooling function by the refrigerant is obtained. In this embodiment, the accumulators are arranged between the air inlet 33b to the pipe chamber 10 and the air inlet 46a to the engine chamber 7, so that the outside air is cooled in the pipe chamber 10 and then cooled. It will be introduced into the chamber 7. Therefore, since the inside of the engine room 7 is ventilated by air having a relatively low temperature, the engine room 7 is cooled more reliably. As for the refrigerant, energy is given by the heat of the air in the piping chamber 10, and the thermal efficiency is improved.

In the above ventilation, the air outlet 45a to the engine room 7 and the discharge port 40b from the engine room 7 are provided at a distance from each other, and the engine 5 is disposed between them. Air having a relatively low temperature will surely hit the engine 5, and in this respect, the cooling performance of the engine 5 is improved.

An exhaust port 40b for discharging air from the engine room 7 is surrounded by a muffling box 40c.
The opening 40d of 0c is provided at a position distant from each pipe passing through the pad 49 portion of the partition plate 39 and is arranged so as to flow out in the opposite direction, so that the exhaust air from the engine room heats each pipe. This is advantageous for the corrosion resistance of the pipeline, and does not adversely affect the heat exchange action of the heat exchanger.

Since the muffling box 40c and the discharge port 40b are positioned higher than the gutter 48, water flowing through the gutter 48 can be prevented from entering the engine room 7 through the opening 40d of the muffling box 40c. .

FIGS. 13 and 14 show modifications of the arrangement of the heat exchangers in the outdoor heat exchange chamber 14. FIG. In the modification of FIG. 13, the upper heat exchanger 11 for the refrigerant is arranged on the upper outer side, the upper heat exchanger 13 a for the engine cooling water is overlapped on the inner side, and arranged vertically (vertically). The lower heat exchanger 12 for engine cooling water is provided inside the lower heat exchanger 12 for engine cooling water.
3b are overlapped and arranged so as to be inclined such that the lower end is located inside.

In the modification shown in FIG. 13, the air flow rate can be made uniform over substantially the entire surface of the heat exchanger as in the above embodiment, and the heat exchange efficiency can be improved. In addition, heat exchanger outside,
The arrangement area can be further reduced while securing the same heat exchange area, since the arrangement is performed on the inner side.

In the modification shown in FIG. 14, one heat exchanger 1
The upper and lower heat exchangers 1 and 13 are arranged vertically in the upper and lower directions.
2 is inclinedly arranged. In this case, the air flow rate of the lower heat exchanger 12 can be made uniform with the air flow rate of the upper heat exchangers 11, 11, and the heat exchange efficiency can be improved as long as it is achieved.

Here, in the above embodiment, the intake pipe 21a is opened outside the ceiling of the outdoor heat exchange chamber 14, but this intake pipe 21a may be opened inside the engine room 7. In this way, the relatively low temperature air in the piping chamber 10 is supplied into the engine, and the charging efficiency is improved. When the engine 5 is taken out of the engine room 7 for inspection and maintenance, the engine 5 can be taken out without removing the intake pipe, so that the inspection and maintenance can be improved accordingly. The engine-driven air conditioner has been described above, but the present invention is similarly effective in a motor-driven air conditioner.

[0056]

According to the air conditioner according to the first aspect of the present invention, the lower end of the lower heat exchanger that is inclined and disposed on the partition plate.
Form ventilation outlets so that they are located between
Air ventilated inside the room from the above outlet to the outdoor heat exchanger room
The hot air in the engine room
Through the heat exchanger, avoiding adverse effects on heat exchange efficiency
You.

Further, since the lower heat exchanger is arranged to be inclined inward, in the case of the same heat exchange area, the heat exchanger arrangement surface of the outdoor heat exchange chamber is smaller than that of the upper and lower heat exchangers. The unit can be kept from becoming larger, increasing its weight,
This has the effect of avoiding the problem of increasing the arrangement space. Sa
According to the invention of claim 2, the engine room is emptied from the engine room.
Surround the exhaust port for exhausting air with a silence box,
The openings of the pipes are located at a distance from each pipe passing through the partition plate.
And the water is discharged in the opposite direction.
Air discharged from the seki room does not heat each of the pipelines,
This is advantageous for the corrosion resistance of the pipeline and the heat exchange operation of the heat exchanger.
There is no adverse effect on use.

[Brief description of the drawings]

FIG. 1 is a partial cross-sectional front view of an engine-driven air conditioner according to an embodiment of the present invention.

FIG. 2 is a right side view, partially in section, of the apparatus of the embodiment (II in FIG. 1).
-II line cross section).

FIG. 3 is a right side view of a part of the apparatus of the embodiment (II in FIG. 1).
(I-III line sectional view).

FIG. 4 is a partial cross-sectional rear view of the apparatus of the embodiment.

FIG. 5 is a plan view of a floor member portion of the outdoor heat exchange chamber of the apparatus of the embodiment.

FIG. 6 is a plan view of a pad portion in FIG. 6;

FIG. 7 is a schematic cross-sectional plan view of an engine room and a piping room in the apparatus of the embodiment.

FIG. 8 is a front view of an electrical box part of the apparatus of the embodiment.

9 is a sectional view taken along line IX-IX in FIG.

FIG. 10 is a left side view (cross-sectional view taken along the line XX in FIG. 4) of a cross section of the engine room of the apparatus of the embodiment.

FIG. 11 is an enlarged view of a water inlet of the apparatus of the embodiment.

FIG. 12 is a schematic configuration diagram of the apparatus of the embodiment.

FIG. 13 is a modified example of the outdoor heat exchange chamber of the apparatus of the embodiment.

FIG. 14 is another modified example of the outdoor heat exchange chamber of the above embodiment.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Engine drive type air conditioner 2 Outdoor air conditioning unit 5 Engine 7 Engine room 11 Upper exchanger 12, 13 Lower exchanger 14 Outdoor heat exchange chamber 44 Fan for outdoor heat exchange

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Claims (2)

(57) [Claims] An engine is disposed in a casing.
Piping with the engine room and the piping connecting each device
A room , an outdoor heat exchange chamber having heat exchangers disposed on the front and rear side surfaces, and a heat exchange blower fan disposed at an upper end opening of the outdoor heat exchange chamber for blowing air upward from below. In an air conditioner having an outdoor air conditioning unit, the engine room
And a pipe chamber and an outdoor heat exchange chamber are defined by a partition plate, the heat exchanger is composed of an upper heat exchanger and a lower heat exchanger, and the upper and lower heat exchangers before and after the above outdoor heat exchange. It is arranged vertically along the front and rear sides of the chamber, and the lower heat exchanger is arranged so that it inclines inward downward from the position near the front and rear sides,
Place the partition plate between the lower ends of the lower heat exchanger.
Ventilation outlet so that it can be
Outside air is introduced into the engine room, and the ventilation outlet
An air conditioner characterized in that the air is discharged from the outdoor heat exchange chamber . 2. The ventilation outlet according to claim 1, wherein
Surround the muffler box and connect the outlet of the muffler box to the above specifications.
Through the cutting plate, the outdoor heat exchanger and each device in the piping room
Air at a distance from each connecting line and in the opposite direction
Air conditioner, characterized in that the air
Place.