JP3348970B2 - Engine driven 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 engine-driven air conditioner in which a compressor is driven by an engine.

[0002]

2. Description of the Related Art As an engine-driven air conditioner, there is one conventionally disclosed, for example, in JP-A-3-213929. In this air conditioner, as a structure for supplying cooling water for the engine, an opening / closing opening is formed in a top wall of a package of the engine heat pump, and a radiator cap is disposed in the opening. When replenishing the cooling water, water is injected into the radiator cap from the opening of the top wall.

[0003]

However, since the top wall of the heat pump package is generally located at a considerably higher position than the ground, there is a problem that the workability of water injection work is poor.

The present invention has been made in view of the above-mentioned conventional problems, and has as its object to provide an engine-driven air conditioner capable of improving workability of replenishing engine cooling water.

[0005]

According to a first aspect of the present invention, there is provided an engine room in which an engine is disposed, and a pipe for connecting each device.
And outdoor heat exchange for refrigerant at the top of the side
Outdoor heat exchange with cooling water heat exchanger at the bottom
And the air is disposed at the upper end opening of the outdoor heat exchange chamber and
In an engine-driven air conditioner equipped with an outdoor air-conditioning unit having a blower fan for heat exchange that blows air upward from above, a partition plate is used to separate the engine room and piping room from the outdoor heat exchange room.
And a heat exchanger for cooling water at the bottom of the outdoor heat exchange chamber
From the vicinity of the side surface so that it inclines inward toward the bottom.
Below the heat exchanger for cooling water, which is inclined above the partition plate
The parts corresponding to the above are removable, and the heat exchanger for cooling water
The metal mesh located outside the metal mesh is detachable, and the cooling water inlet of the engine is provided in the heat exchanger for cooling water, and is arranged so as to open obliquely upward toward the inner surface of the metal mesh. I have.

According to a second aspect of the present invention, there is provided an engine room in which an engine is provided, and a pipe in which piping for connecting respective devices is provided.
Outdoor heat exchanger for refrigerant at the top of the chamber and side, cooling at the bottom
An outdoor heat exchange compartment heat exchanger is disposed for water, the outdoor heat exchanger
It is located at the upper end opening of the switching room and blows air upward from below.
That in the engine driving type air conditioner equipped with an outdoor air conditioning unit having an air blowing fan for the heat exchanger, the engine room
And a piping board and an outdoor heat exchange chamber are defined by a partition plate.
Remove the heat exchanger for cooling water at the lower part of the outdoor heat exchange chamber from near the side
Arrange so that it inclines inward toward the bottom, and above the partition plate
The part corresponding to the lower part of the cooling water heat exchanger
Removable and located outside the heat exchanger for cooling water
To wire mesh and a detachable, cooling water injection port of the engine provided with a heat exchanger for the cooling water, the infusion Minakuchi
It is characterized by opening and closing windows that face each other. The invention according to claim 3 is the invention according to claim 1 or 2, wherein
Cut the plate to the ceiling of the engine room and the ceiling of the plumbing room.
Incline so that it becomes lower toward the boundary with the component
And raise the position of the end of the partition plate outside the engine room.
In addition, a side plate of the engine room can be removed .

[0007]

According to the first and second aspects of the present invention, the cooling water inlet for the engine cooling water is disposed so as to open diagonally upward toward the inner surface of the wire mesh of the outdoor air conditioning unit or the opening / closing window. Although there is a restriction that the position is higher than the height, the height position can be freely set within the range, and therefore the water injection port can be arranged at a lower position than the conventional device, thereby improving the workability of water injection of engine cooling water. be able to.

[0008] In addition, the heat exchanger in which the partition plate is inclined is arranged.
The lower part is removable so that the engine
When checking from above, remove the corresponding part
Thus, this inspection work can be easily performed .
Furthermore, in the invention according to claim 3, the partition plate has a low boundary side.
And raised the outside end of the engine room.
Therefore, the opening when the side plate is removed becomes large.

[0009]

Embodiments of the present invention will be described below with reference to the accompanying drawings. FIGS. 1 to 13 illustrate an engine-driven air conditioner according to an embodiment of the present invention. FIGS. 1 and 4 are front and rear views, and FIGS.
FIG. 5 is a plan view of a floor of an outdoor heat exchange chamber, FIG. 6 is a plan view of a pad, FIG. 7 is a schematic plan view of a cross section of an engine room and a piping room, FIG. 9 is a front view of the electrical box, FIG. 9 is a cross-sectional view taken along line IX-IX of FIG. 8, FIG. 10 is a left side view of the cross section in the engine room, FIG. 11 is a layout view of a water inlet of engine cooling water, and FIG. And FIG. 13 is a view showing the overall configuration.

[0013] In FIG. 13 showing a schematic configuration of the apparatus of this embodiment, reference numeral 1 denotes an engine-driven air conditioner, which is composed of 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
Is an engine room 7 in which an engine 5, a compressor 6, 6 and the like are arranged.
And the main accumulator 8, the sub accumulator 9,
A piping chamber 10 in which an electrical box 50 and a pipe connecting each device are arranged, a refrigerant outdoor upper and lower heat exchangers 11 and 12, and an engine cooling water heat exchanger (hot water heat exchanger). 13 and the like are provided.

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. When the amount of the lubricating oil separated by the separator 19a exceeds a predetermined value, an oil strainer is provided. 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 through a water pipe 30c and an inlet 30b. The switching valve 28c is provided at the inlet 30b.
Is also connected. The port is always in communication with the cooling water jacket 28b via a throttle. That is, air can be removed from the low-temperature circulation circuit. When the three-way valve 28d is switched, the engine cooling water is supplied to the heater 29g in the main accumulator 8 through the water pipe 29d, thereby supplying heat to the refrigerant.

Next, the 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 has a floor plate 33 placed and fixed on a pair of bases 32 and supports 34 at four corners, and the upper ends of the four supports 34 are positioned on the right side and the left side. On the surface, each is connected by one ceiling beam (not shown), the floor plate is bent at the front and rear ends to form a floor beam 33a, and the front, rear, left, and right sides are front, rear, left, and right side plates 37a to 37a. 37d, the ceiling surface is covered with a top plate 37e. The ceiling plate is bent at the front, rear, left and right ends, and each plate or support 34
Is formed. The front and rear side plates 37a,
37b covers the front and rear sides of the casing 31 below the partition plate 39, which will be described later.
The left and right plates 37a to 37d are detachable to ensure maintainability of each device.

The front plate 37a on the front and rear sides of the casing 31 and the upper part of the rear plate, that is, the partition plate 39
The upper part is an outside air introduction opening, and wire meshes 38a and 38b functioning as filters are detachably attached to the openings. The top plate 37e is formed with a discharge opening 37f for discharging the introduced outside air upward, and the discharge opening 37f is provided in the outdoor heat exchange chamber 14
Inside, a blower fan 44 for outdoor heat exchange that sucks outside air from the wire meshes 38a and 38b and discharges the air upward. 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 cylindrical vertical gutter (drainage 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 spaced apart from the piping chamber air inlet 33b and is located below.

The upper and lower rear heat exchangers 11 and 11 for the refrigerant are disposed at the upper front and rear side surfaces in the outdoor heat exchange chamber 14, the lower outdoor heat exchanger 12 for the refrigerant is disposed at the lower rear and the lower heat exchanger 12 is disposed at the lower front. 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.

Here, as shown in FIG. 12, the water supply port 30b is provided with a water supply cylinder 60 connected to the upper end of the head pipe 13c of the cooling water heat exchanger 13 which is disposed obliquely upward and the water supply cylinder 60. The cap 61 includes a cap 61 for opening and closing the opening 60 a of the water bottle 60, and a pressure valve 62 provided in the cap 61. The opening 60a is a wire mesh 38 forming a side wall of the casing 31 of the outdoor air conditioning unit 2.
It opens diagonally upward toward a. The pressure valve 62 is connected to the water cylinder 60 by its valve body 62b.
The opening and closing of a valve seat opening 60a formed in an intermediate portion of the valve body 62b is performed, and the valve body 62b is urged in a closing direction by a spring 62a.

The pressure valve 62 regulates the maximum internal pressure of both circulation circuits of the cooling water. That is, when the internal pressure of the circulation circuit exceeds the valve opening pressure, the pressure valve 62 opens to guide the remaining air, steam or hot water to the cooling water reservoir tank 30a, thereby protecting the circulation circuit components even if an abnormal steam pressure is generated. It is possible.

Reference numeral 62c denotes a pressure valve which opens when the differential pressure between the outside and the inside of the circulation circuit becomes a predetermined value or more, and allows a flow from outside to inside. When the engine is stopped, the temperature of the cooling water drops, the water vapor in the circulation circuit condenses and the internal pressure drops below the atmospheric pressure, and when the pressure difference between the outside and the inside increases, the pressure valve 60c opens and the reservoir tank for the cooling water The water inside is pushed up by the atmospheric pressure and replenished in the circulation circuit.

When the cap 61 is removed to check the cooling water, the airtightness of the seal 61a is lost and the pipe 30c
The water inside returns to the reservoir tank 30a, and the water level drops. The water level gradually rises due to the repetition of the evaporation of water in the circuit due to the operation of the engine, the movement of water vapor through the pressure valve 62 to the reservoir tank 30a, and the increase in the water level corresponding to the amount of water vapor moved by stopping the engine. Then, replenishment can be performed in the circulation circuit, but in the meantime, the amount of cooling water may be insufficient. However, in this embodiment, the water level rises quickly when the position of the water supply cylinder 60 is lower, and the cooling water amount is less likely to be insufficient. The heat exchange in the accumulator 8 or the heat exchanger 13 for cooling water can be sufficiently performed accordingly. This is because, even if the generated steam pressure is lowered by heat exchange, the time required for replenishment becomes shorter.

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 connected.
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 high-temperature, high-pressure refrigerant gas compressed by the compressors 6, 6 is supplied to the refrigerant outdoor heat exchangers 11, 12 through the refrigerant line 16a, the four-way valve 15, and the refrigerant line 16b. Is cooled by outside air and liquefied. 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 is supplied to the refrigerant line 17.
b, passes through the four-way valve 15, the refrigerant pipe 16d, the main accumulator 8, the sub-accumulator 9, and returns to the compressor 6, and the same cycle is repeated.

At the time of 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 through the refrigerant pipes 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 the present 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.

In the operation of injecting the engine cooling water, after removing the wire mesh 38a, the cap 61 of the water inlet 30b is removed. Then, water is injected into the opening 60a from the rear surface of the air conditioning unit 2. In this case, since the water injection port 30b is provided at the upper end of the head pipe 13c of the cooling water heat exchanger 13 that is arranged on the lower side and inclined, the height position is provided on the top wall, for example. This is lower than the conventional example, and the cooling water can be easily injected. In addition, since the water injection opening 60a is opened obliquely upward, water injection is also easy from this point.

Furthermore, since the lower heat exchangers 12 and 13 are inclined and the lower end is disposed on the center 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.

Here, when the refrigerant outdoor heat exchanger is used as an evaporator (at the time of heating), atmospheric water vapor condenses on the surface of the heat exchanger, but as described above, the lower heat exchangers 12, 13 are condensed.
The condensed water flows mostly along the inclined surface of the heat exchanger 12, and the condensed water flows into the gutter 48 or the gutter 48. Fall to a position close to. 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.

Furthermore, 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 above-mentioned partition plate 39 are inclined so that the above-mentioned 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.

Since the partition plate 39 constituting the ceiling of the engine room 7 and the piping room 10 is 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.

Since the horizontal gutter 48 and the vertical gutter 43 are arranged outside the engine room 10 and drainage is provided below the engine room, rainwater and the like enter the engine room even if these gutters have holes. 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 drainage port 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 air inlet 33b of the pipe room, and the air inlet 36a of the engine room 7 is connected to a drain 43a.
Would be further away from

If the horizontal gutters 48 and the vertical gutters 43 are made of synthetic resin, the corrosion resistance can be improved accordingly, and the floor gutters 48 and the vertical gutters 43 can be replaced 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. 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. Also, rainwater splashes enter the piping chamber 10 from the air inlet 36a to the piping chamber 10, but do not enter the engine room 7.

The main and sub accumulators 8 and 9 arranged in the piping chamber 10 store liquid-phase refrigerant, 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.

The 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. .

In the above embodiment, at the time of water injection, the wire mesh 3
In order to make the removal work unnecessary, as shown in FIG. 14, an opening / closing window 63 may be provided in the wire mesh 38a facing the water inlet 30b. The workability of water injection can be further improved.

Further, in the above-described embodiment, the case where the engine coolant heat exchanger 13 is disposed below the refrigerant heat exchanger 11 has been described. Can be applied to the case where the refrigerant heat exchanger 11 is disposed on the upper side, and in this case, a water inlet may be provided in the upper engine cooling water heat exchanger. In addition, although the water inlet 30b is attached to the heat exchanger 13 for engine cooling water, the water inlet may be attached independently of the heat exchanger 13 as a separate body. The degree of freedom in the location of the water inlet can be improved. In any case, the water inlet is opened obliquely upward toward the inner surface of the side wall of the air conditioning unit.

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.

[0057]

According to the engine driving type air conditioner according to the invention of claim 1 according to the present invention, the water inlet of the outdoor air conditioning unit
Since it was arranged to open diagonally upward toward the inner surface of the wire mesh or the opening / closing window , the water inlet can be placed at a low place,
There is an effect that the workability of cooling water injection can be improved.

Further , below the heat exchanger where the partition plate is inclined.
The part corresponding to the direction is removable, so the engine etc.
This has the effect of improving inspection workability . Further, according to claim 3
According to Ming, the end of the partition plate outside the engine room is raised,
The opening becomes larger when the unit is removed, making inspection and maintenance easier.
It becomes.

[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.

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 cross-sectional side view of a water supply port portion of the apparatus of the embodiment.

FIG. 13 is a schematic configuration diagram of the apparatus of the embodiment.

FIG. 14 is a schematic sectional view showing an example in which an opening / closing window is provided at a water supply port in the apparatus of the embodiment.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 engine driven air conditioner 2 outdoor air conditioning unit 5 engine 7 engine room 11 refrigerant outdoor upper heat exchanger 12 refrigerant outdoor lower heat exchanger 13 engine cooling water heat exchanger 14 outdoor heat exchange room 30b water inlet

Continuation of the front page (56) References JP-A-1-200131 (JP, A) JP-A-5-60344 (JP, A) JP-A-62-84237 (JP, A) JP-A-59-134474 (JP, A) , A) Japanese Utility Model Hei 2-80722 (JP, U) (58) Field surveyed (Int. Cl. ⁷ , DB name) F24F 5/00

Claims (3)

(57) [Claims] 1. An engine room in which an engine is arranged and each device
The piping room where the piping to connect each other is arranged, and the upper part of the side
The outdoor heat exchanger for refrigerant is located at the bottom, and the heat exchanger for cooling water is located at the bottom.
The outdoor heat exchange chamber is located at the upper end opening of the outdoor heat exchange chamber.
A blower for heat exchange that is provided and blows air upward from below
In an engine driving type air conditioner equipped with an outdoor air conditioning unit and a § emissions, the engine room and pipe chamber and the outside
The heat exchange chamber is defined by a partition plate, and the lower part of the outdoor heat exchange chamber is defined.
Of the cooling water heat exchanger is inclined inward from the vicinity of the side to the bottom.
Arranged so that the cooling of the partition plate is inclined
The lower part of the water heat exchanger is detachable,
The wire mesh outside the heat exchanger for cooling water can be detached.
And the water inlet of the cooling water of the engine provided with a heat exchanger for the cooling water, the engine driving type air conditioner, characterized in that arranged so as to open obliquely upward toward the wire mesh inside surface. 2. An engine room in which an engine is arranged and each device
The piping room where the piping to connect each other is arranged, and the upper part of the side
An outdoor heat exchanger for refrigerant, an outdoor heat exchange chamber in which a heat exchanger for cooling water is disposed at a lower portion, and an upper end opening of the outdoor heat exchange chamber.
A blower for heat exchange that is provided and blows air upward from below
In an engine driving type air conditioner equipped with an outdoor air conditioning unit and a § emissions, the engine room and pipe chamber and the outside
The heat exchange chamber is defined by a partition plate, and is located below the outdoor heat exchange chamber.
Of the cooling water heat exchanger in the section
Arranged so that it is inclined, and the partition plate is inclined
The part corresponding to the lower part of the heat exchanger for cooling water is removable
Then, remove and attach the wire mesh located outside the heat exchanger for cooling water.
Possible and to the cooling water injection port of the engine provided with a heat exchanger for the cooling water, open to face the infusion Mizuguchi
An engine-driven air conditioner having a closed window . 3. The partition plate according to claim 1, wherein
The ceiling of the engine room and the ceiling of the plumbing room
Tilt so that it becomes lower toward the boundary with the part to be
Position of the partition plate outside the engine room,
An engine-driven air conditioner, wherein a side plate of a seki room is removable .