JP3425635B2 - Engine driven heat pump device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [0001] BACKGROUND OF THE INVENTION
Engine driven heat pump that drives the compressor
Use gas heat pump engine for equipment
In air conditioning equipment, for example, water-cooled engines, radiators,
Cooling system consisting of cooling water pumps and cooling water pipes between them
Engine driven heat pump with recirculating water circulation system
Related to the device. [0002] 2. Description of the Related Art An engine-driven heat pump device is
Suitable for air conditioning equipment using a heat pump engine
And disclosed in, for example, JP-A-63-247562.
There are things to be done. In this air conditioner, the outdoor unit
A heat converter room Kr is arranged at the upper part, and an engine room Er is arranged at the lower part.
ing. The cooling water circulation passage W of the engine E is
Are located. The cooling water circulation passage W
Waste heat recovery unit U, thermostat T1, radiator
R, cooling water pump Pm, exhaust gas heat exchanger G, manifold
Field Mn is provided. FIG. 1 shows that the cooling water pump P
m is arranged in the heat exchanger room Kr. On the other hand, from the ventilation fan 65 to the engine room Er
The air taken in is a gap opening formed in the top wall 56.
75 to the heat exchanger room Kr,
Are discharged to the outside by the fans F1 and F2.
ing. [0006] As described above, the engine
The air warmed in the chamber Er is supplied to the heat exchanger chamber Kr.
Therefore, the cooling water pump Pm in the heat exchanger room Kr
It is easy to heat except for the part that drives the cooling water pump Pm
The durability of the bearing may be reduced. In particular, electric cooling
When using a recirculating water pump, the electric cooling water pump
The conditions are more severe due to internal heat generation. The present invention has been made in view of the above points.
Provides an arrangement that does not reduce the durability of the cooling water pump.
Engine that improves the durability of the cooling water pump
With the purpose of providing a self-drive heat pump device
I have. [0008] [0008] [0009] [MEANS FOR SOLVING THE PROBLEMS]
An engine-driven heat pump according to claim 1
When the device is divided into upper and lower outdoor units by a partition plate
In both cases, the engine is located on the side of the partition wall that partitions the lower part of the outdoor unit.
And a compressor driven by this engineEngine room to house
Provided,At the other side of the partition wall, the discharge of the compressor during the cooling operation
The high-pressure refrigerant from the outlet is guided to the outdoor heat exchanger and expanded.
After passing through the expansion valve, the pressure becomes low and the refrigerant passes through the indoor heat exchanger.
Accommodates a pipeline with a four-way valve leading to the suction port of the compressor
Set up a plumbing room, Oil supply to the engine in this piping room
Oil supply tank and the piping
A plumbing room air intake for introducing outside air into the room is provided,
Refrigerant piping from the outdoor unit to the indoor unit is routed from the piping room to the outside.
Guiding, a refrigerant pipe from the indoor unit to the outdoor unit and the
I will lead the fuel line to the engine from outside to the piping room.
Sea urchin,A blower and a fan for outdoor heat exchange are located above the outdoor unit.
GietaAnd the outdoor heat exchangerOutdoor heat exchanger room with
Arrange the engine and the radiator in the cooling water passage
Contact the cooling water pump located in the middle of this cooling water passage
Cooling the outdoor unit so that cooling water is circulated by
Water circulation system and ventilation fan installed on the partition wall
From the departmentThe piping roomGuides fresh air introduced into the engine room
As well asSaidAir heated in the engine room,Previous
In the ventilation fanInner engine room and outdoor heat exchanger room of the partition plate
To the engine room side partition plate that definesEstablishedVentilation air exhaust
From the mouth to the outdoor heat exchanger room,
The air inside the outdoor heat exchanger is discharged to the outside by a wind fan
And a ventilation device configured to
On the way to the fresh air or in the engine room
Characterized in that the cooling water pump is arranged near a road
It is an engine-driven heat pump device. According to the first aspect of the present invention, the ventilation fan
Guides fresh air introduced into the lower part of the outdoor unit from the outside into the engine room
As it enters, the air warmed in the engine room is
Engine room side partition that defines the internal engine room and the outdoor heat exchanger room
The plate is led from the ventilation air outlet to the outdoor heat exchanger room,
The air inside the outdoor heat exchanger is blown out by the blower fan for outdoor heat exchange.
And use the suction effect of the blower fan for outdoor heat exchange
are doing. In addition, a path for introducing fresh air by a ventilation fan.
A cooling water pump is installed inside or near the introduction passage in the engine room.
To keep the temperature of the cooling water pump low.
And the durability of the cooling water pump is improved. [0012] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, an engine-driven heat pon of the present invention will be described.
Example of an engine-driven air conditioner to which a pump device is applied
Will be described with reference to the drawings. FIGS. 1 to 15 show an engine-driven air conditioner.
FIG. 1 is a diagram for explaining one embodiment of the apparatus.
FIG. 2 is a diagram showing the overall configuration of an engine-driven air conditioner, and FIG.
FIG. 3 is a front view of the outdoor air conditioning unit, and FIG.
Right side view, FIG. 4 is a plan view of the floor of the outdoor heat exchanger room, FIG.
Is a plan view of the pad, and FIG. 6 is a sectional view of the engine room and the piping room.
FIG. 7 is a schematic view, FIG. 7 is a sectional view of an electrical component box, and FIG. 8 is an engine.
Layout drawing of the cooling water inlet, FIG. 9 is a sectional view of the water inlet,
10 is a sectional view of the exhaust heat exchanger, and FIG. 11 is a cooling water circulation system.
FIG. 12 is a front view showing a stem, and FIG. 12 shows a cooling water circulation system.
FIG. 13 is a plan view of the cooling water circulation system, and FIG.
14 is a cross-sectional view of the thermostat, and FIG.
It is sectional drawing which shows schematic structure of the outer plate wall of a kit. First, the engine-driven air conditioner shown in FIG.
FIG. 1 is a diagram showing the overall configuration of an engine-driven air conditioner.
The device 1 is an outdoor air conditioning unit (hereinafter also referred to as an outdoor unit)
2 and an indoor air conditioning unit 3. Indoor
The conditioning unit 3 includes a refrigerant indoor heat exchanger 4 and an expansion for decompression.
A valve 18 and a fan for indoor heat exchange (not shown) are provided.
ing. The outdoor air conditioning unit 2 includes an engine 5, a compressor
The engine room 7 with 6 and 6 etc., and the main accumulator
(Hereinafter also referred to as waste heat recovery unit) 8, sub-accumulation
, The electrical component box 50 and the respective devices are connected to each other.
A pipe chamber 10 in which pipes and the like are disposed, and a heat exchange outside the refrigerant chamber
Exchanger 11, refrigerant outdoor lower heat exchanger 12 and engine cooling
Radiator 1 as heat exchanger for hot water (hot water heat exchanger)
3 and the like, and an outdoor heat exchanger room 14 in which an outside heat exchanger room 3 is disposed.
As can be seen in FIG.
Are arranged side by side, and in FIG.
Is displayed as one. As the engine 5, a water-cooled gas fuel engine
The intake port of the engine 5 is used as an intake pipe 21a.
Mixer 21b and air cleaner 21c are connected via
The intake pipe 21a is connected to the top wall of the engine room 7 and the outdoor heat.
It opens through the top wall of the exchanger room to the outside. This sucking
The trachea 21a is opened in the engine room 7 as described later.
Is also good. The gas mixer 21b is connected to the fuel line 22 by a gas line.
The fuel line 22 is connected to a gas mixer 21.
b, the flow control valve 22a integrated with the zero governor (pressure reduction
Valve 22b and two solenoid valves 22c.
You. The exhaust port of the engine 5 has an exhaust pipe 23a.
Through the exhaust heat exchanger 23b, the exhaust silencer 23c,
The oil separator 23d is connected to the exhaust pipe 23.
a is open above the heat exchange chamber 14. Gasmiki
The heat exchanger 21b is connected to the heat exchanger
May be arranged outside the ceiling wall. The engine 5 has an oil supply tank.
The solenoid valve 24b is provided when the lubricating oil amount decreases.
Opens and lubrication oil is supplied by gravity
I have. The output shaft of the engine 5 has a clutch 6a,
The compressors 6, 6 are connected via 6a. Compressor 6
Is switched to the refrigerant line 16a and the cooling operation position.
Via the four-way valve 15 and the refrigerant line 16b
Connected to the external heat exchanger 11 and the outdoor lower heat exchanger 12 for refrigerant.
The heat exchangers 11 and 12 are connected to the refrigerant line 16c,
Heat exchange part 16e in the non-accumulator 8, the refrigerant pipe 1
7a is connected to the refrigerant indoor heat exchanger 4 via
The refrigerant chamber heat exchanger 4 is provided with a refrigerant line 17b, a four-way valve 1
5, refrigerant line 16d, main accumulator 8, sub
Inlet of compressors 6, 6 via accumulator 9
It is connected to the. In addition, 102 is a dryer, 103 is
This is a filter that bypasses the liquid. Reference numerals 300 and 301 denote capillaries;
10, 210 each combined temperature detector and capillary
The main space is detected by detecting the refrigerant temperature.
For detecting the level of the liquid-phase refrigerant in the accumulator 8.
Things. 302 is an on-off valve, and 303 is an oil drain.
The amount of oil stored at the bottom of the accumulator, which is the exit passage
Open or closed manually or automatically
Sub-accumulator from main accumulator 8
Flow to the data 9. In the middle of the refrigerant pipe 16a,
Oil separator 19a for separating the lubricating oil is provided.
And the amount of lubricating oil separated by the oil separator 19a.
Is larger than a predetermined value, the oil strainer 19b
Main accumulator via solenoid valve 19c which opens when value exceeds
Returned to the lator 8. Note that lubricating oil is
Data 9 is also returned. Also, the refrigerant pipe 16a is
Trainer 20a, solenoid valve that opens when pipe pressure is above a predetermined pressure
20b connected to the main accumulator 8
This prevents abnormal rise in refrigerant line pressure.
You. Reference numeral 90 denotes a solenoid valve, and 91 denotes an oil strainer.
In cooling, when the load on the indoor unit 4 becomes particularly small,
The magnetic valve 90 is opened, and the refrigerant bypasses the indoor unit 4 and
Flow to the accumulator 8 to balance the load.
I am trying to. Cooling of outdoor unit as outdoor air conditioning unit 2
A water circulation system S is provided. This cooling water circulation system
The stem S is used when the temperature of the cooling water is lower than a predetermined value.
The cooling water jacket 28b of the engine 5 and the thermostat
Circulating through the first cooling water pump 28a.
The circulation paths 29a1, 29a2, 29q, 29s and the engine
At the time of cooling, the exhaust heat exchanger 23b, the linear three-way valve 28d,
One is the radiator 13 and the other is the main accumulator
8 and the second cooling water pump 28e.
Second circulation paths 29e1, 29e2, 29r, 29
From b, 29c, 29d, 29f1, 29f2, 29p
When the cooling water temperature exceeds a predetermined value.
When the gin is warmed up, the exhaust heat exchanger 23b and the first cooling water pump
Pump 28a, cooling water jacket 28b of engine 5,
Mostat 28c, linear three-way valve 28d, one is radiator
Heat exchange in the main accumulator 8
Part 29g, the second cooling water pump 28e
3 circulation paths 29e1, 29e2, 29s, 29a1, 29
a2, 29b, 29c, 29d, 29f1, 29f2
29p. The first cooling water pump 28a will be described later.
To be close to the introduction passage opening in the engine room.
Or place it in the piping room. The radiator 13 has a reservoir for cooling water.
Reservoir tank 30a via water line 30c and inlet 30b.
Connected. Thermostat 2 in the inlet 30b
8c is also connected to the thermostat 28c
Is composed of a jiggle valve. Thermostat 28c
The port is always connected to the cooling water jacket 28b via a throttle.
Through the first circulation paths 29a1 and 29a when the engine is cold.
Air bleeding within 2, 29q, 29s is enabled. In addition,
Cooling water reservoir tank 30a also has water inlet 30d at the top
A communication path 30e between the air and the atmosphere is provided. The engine cooling water is supplied to the linear three-way valve 28.
d is switched, the main pipe is switched by the water pipe 29d.
The heat is supplied to the heat exchange section 29 g in the accumulator 8,
Gives heat to the refrigerant. Next, the specific structure of the outdoor air conditioning unit 2
Will be described in detail with reference to FIGS. The casing 31 of the outdoor air conditioning unit 2
The floor plate 33 is placed on a pair of bases 32 and fixed.
The pillars 34 are erected at the four corners, and on these four pillars 34
One end is not shown on each of the right side and the left side.
The floor panel 33 is bent at the front and rear ends,
33a, and the left and right sides are left and right side plates 37c, 37
d, the ceiling surface is covered with a top plate 37e, respectively.
You. The top plate 37e is formed by bending the front, rear, left and right ends, and
a to 37d or a connecting portion with the column 34 is formed.
You. Further, the front side is folded as shown in FIG.
The bent engine room side partition plates 41a and 41b
Right and left front side plates 37a, 37a with bent upper ends
Are fastened by a tightening screw 35. Similarly, the rear side,
The bent piping chamber side partition plates 42a and 42b
Right and left rear sides as viewed from the front with their upper ends bent
Plates 37b, 37b are attached. The front and rear side plates 37a and 37b are
Cover the lower part of the front and rear sides of the rear side below the partition plate 39 described later.
Front, rear, left and right side plates 37a to 37d
Is detachable to ensure maintainability of each device.
You. Also, the front side of the front and rear side surfaces of the casing 31
Upper portions of the plate 37a and the rear side plate 37b are openings for introducing outside air.
Each opening has a wire mesh 38a functioning as a filter,
38b are detachably mounted on the upper and lower sides of the horizontal frames 36a and 36b.
Is being worn. In addition, the outside air introduced into the top plate 37e is
A discharge opening 37f for discharging the water upward is formed.
The outside air is supplied to the outlet opening 37f by a wire mesh inside the outdoor heat exchanger room 14.
Outdoor heat sucked from 38a, 38b and discharged upward
A replacement blower fan 44 is provided. Discharge opening 37
A wire mesh 38c is erected around f. The partition plate 39 is provided between the outdoor heat exchanger room 14 and the machine.
It is for defining the seki room 7 and the plumbing room 10,
Central partition plate 40 constituting the ceiling of engine room 7 and engine room side
The partition plates 41a and 41b and the ceiling of the piping room 10 are formed.
It is composed of piping chamber side partition plates 42a and 42b. Machine
Seki room side partition plate 41a, 41b and piping room side partition plate 42
a and 42b are detachable upward. At the time of removal, the front and rear side plates 37a, 37
b is also removed, and the engine room 7 has a ceiling side, a front side and
Both parts are open, and the piping room 10 is on the ceiling side, the rear side and
Both parts are open and the maintenance work of the equipment in each room is
Easy to do business. The center partition plate 40 and the piping room side partition plate 4
2a and 42b and the front wall of the engine room 7
After forming, on the outside upper part of the middle plate 44a (upper part on the piping room 10 side)
The horizontal gutter 48 (drainage passage) is the center of these
It can be disassembled with the plates 40, 42a and 42b, that is,
It is arranged to be exchangeable with the one. The horizontal gutter 48 is an outdoor air conditioning unit.
Longitudinal direction of knit 2 (horizontal direction in FIG. 1), that is, heat exchanger
The groove extends in the direction of the placement surface, and the lower the left side
It is inclined to become. Located at the highest point of the gutter 48
The right end 48b is removed by removing the right side plate 37d.
Or by providing an opening (cleaning hole)
It is possible to go out. The center partition plate 40 forms a V-shaped gutter 48.
Cover the V-shaped bottom above the gutter 48
A hole for water dropping may be provided. The left end located at the lowest part of the gutter 48
A tubular downspout (drainage pipe) 43 is detachably connected to the portion 48a.
Has been continued. This downspout 43 is connected to the inner surface of the left side plate 37c.
The outer wall of the rear middle plate 44a constituting the front side wall of the
The lower part of the corner extends downward
The drain port 43a is located below the floor plate 33 and
Suitable for The downspout 43 removes the left side plate 37c.
As a result, it can be exchanged for a new one. Further, the engine room side partition plates 41a, 41b,
The tube chamber side partition plates 42a and 42b and the center partition plate 40
It is inclined so that it becomes lower toward the gutter 48 side. for that reason,
Rainwater and the like that has entered the outdoor heat exchanger room 14 immediately
8 and is discharged to the outside through the downspout 43. Ma
In addition, the engine room side partition plates 41a and 41b, the piping room side partition plate 4
2a, 42b and the inclination of the center partition plate 40 to the engine room side
Partition plates 41a and 41b and piping room side partition plates 42a and 42
b, the position of the outer end portion becomes higher, and the front and rear side plates 37a, 37
Large opening when inspecting and maintaining the inside by removing 7b
It's getting worse. The central partition plate 40 is provided with ventilation air.
So that the discharge port 40b opens into the outdoor heat exchanger chamber 14.
It is formed in two places. The outlet 40b is a silence box
40c. Opening of muffling box 40c
40d is located above the gutter 48 and has an outlet.
It is located downstream of the gutter 48 with respect to 40b.
Thereby, rainwater etc. which entered into the outdoor heat exchanger room 14
Alternatively, rainwater or the like flowing in the gutter 48 is discharged from the outlet 40b.
It prevents entry into the engine room 7. Note that there is no sound inside the silencer box 40c.
A sound-absorbing sheet in the form of a stick is attached. The side wall of the engine room 7 includes a front side plate 37a and a left side plate.
37c, rear middle plate 44a, right middle plate 44b, top wall is engine room
The side dividers 41a and 41b and the center divider 40,
The wall is a bottom plate 45 spaced apart from the floor plate 33.
It is comprised by each. Rear middle plate 44a, right middle plate 44
b, the upper and lower end surfaces are in airtight contact with the partition plate 39 and the floor plate 33.
The engine room 7 is thus constructed in a soundproof structure.
Has been established. The rear middle plate 44a and the right middle plate 44b are in the engine room 7
And a partition wall of the piping room 10. The space between the bottom plate 45 and the floor plate 33 is a box.
The ventilation plate 46 has a rectangular shape, and the bottom plate 45 has an engine
There are many outlets 45a that blow air for ventilation into chamber 7,
It is arranged and formed substantially evenly over the surface. Also, ventilation
2 which opens into the piping chamber 10 on the right middle plate 44b side of the passage 46
One engine room air inlet 46a is formed, and each air
A ventilation fan 47 is provided in the intake 46a. Vertical
The drain 43a of the gutter 43 is opposite to the engine room air intake 46a.
Side, that is, at a position separated from the air intake 46a by charge and separation
Is provided. On the inner surface side of the rear side plate 37b in the piping chamber 10,
Electrical box containing various control devices
50 are provided. On the bottom of this electrical box 50
Is an air inlet 50a and an outlet 50b is on the upper side.
And an air passage between the bottom surface and the floor plate 33.
There is a gap. The outside air is supplied to the floor plate 33 in the piping room 1.
0 to form a piping chamber air inlet 33b
The outside air passes through the air inlet 33b,
10 is introduced. Some of the introduced outside air is empty.
It is introduced into the electrical equipment box 50 from the air intake 50a,
It is discharged from the outlet 50b and ventilates the inside of the electrical box 50.
You. In addition, the drain port 43a of the downspout 43 is an air inlet for the plumbing room.
33b and located below. A floor plate 33 is provided below the terminal room 22.
And no ceiling. The terminal room 22 is connected to the piping room 10
It is a communication passage connecting the outside of the ring 31. Also, the terminal
The chamber 22 is opened to the rear outside with the rear side plate 37b removed.
It is. Respective joints 100a, 10 of refrigerant pipes 100, 101
1a and the fuel line 22dendIs located in this terminal room 22
And external piping introduced from below the terminal chamber 22 respectively.
Connected. Connected to external power supply. The upper part of the front and rear side surfaces in the outdoor heat exchanger room 14
The upper outdoor heat exchangers 11 and 11 for the refrigerant are
A refrigerant outdoor lower heat exchanger 12 is provided at the lower front side.
Radiators 13 as heat exchangers for cooling water
It is arranged. The outdoor outdoor heat exchangers 11, 11 for the refrigerant
To be vertical and along the wire mesh 38a, 38b
Whereas the lower outdoor heat exchanger 12 and
And the radiator 13 is inclined so that the lower part is located on the inside
The upper end right end of the radiator 13
The part is provided with an inlet 30b. The injection port 30b is shown in FIGS. 8, 9 and 11.
As shown, the horizontal frame 36 forming the side wall of the casing 31 is shown.
a facing the injection door 63 provided on the right end and the support 34
Of the radiator 13 that is arranged diagonally upward
The water supply cylinder 60 connected to the upper end of the
A cap 61 for opening and closing the opening 60a of the water supply cylinder 60;
Pressure valve 62 provided in cap 61
And The opening 60a is provided with the housing of the outdoor air conditioning unit 2.
Obliquely toward the wire netting 38a forming the side wall of the sawing 31.
It is open upward. The pressure valve 62 is
Valve seat formed in the middle part of the water supply cylinder 60 by the valve body 62b
60b is opened and closed.
It is urged in the closing direction by a ring 62a. The pressure valve 62 is used for both circulations of the cooling water.
Specifies the maximum internal pressure of the circuit. That is, the internal pressure of the circulation circuit
When the pressure exceeds the valve opening pressure, the pressure valve 62 opens and the remaining
Air, steam or hot water to be retained
Link 30a, and the circuit components
It is possible to protect even if it occurs. Pressurer
The lube 62c has a predetermined pressure difference between the outside and the inside of the circulation circuit.
When open, allow flow from outside to inside. The engine 5 stops, the cooling water temperature decreases,
Water vapor in the circulation circuit condenses and the internal pressure falls below atmospheric pressure
When the differential pressure between the outside and inside increases, the pressure
The valve 60c is opened and the water in the cooling water reservoir tank 30a is opened.
Is boosted by atmospheric pressure and replenished in the circulation circuit.
You. When the cap 61 is removed for checking the cooling water,
The airtightness of the seal 61a is lost, and the water pipe 30c
Water returns to the cooling water reservoir tank 30a.
No, the water level drops. Water vapor and pre-pressurized water in the circuit
Water reservoir even after passing through the washer valve 62
Moved to battan 30a, moved due to engine stop
By repeatedly raising the water level by the amount of water equivalent to the amount of water vapor
The water level rises gradually and can be refilled in the circulation circuit
However, in the meantime, the amount of cooling water may be insufficient.
However, in this embodiment, the position of the water supply cylinder 60 is lower.
The water level rises quickly and the amount of cooling water is unlikely to be insufficient. That's Mei
Heat exchange in the accumulator 8 or radiator 13
Replacement can be sufficiently performed. Ie heat exchange
Until refilling is possible even if the generated vapor pressure drops due to
This is because the period becomes shorter. The lower end of the radiator 13 is an engine room side partition plate.
Central partition plate 40 and muffling box beyond 41a and 41b
40c is located on the upper corner portion. Also, refrigerant
The lower end of the lower outdoor heat exchanger 12 is connected to the pipe room side partition plate 42.
a, 42b and further over the gutter 48, the central partition 40
And the muffling box 40c are located on the lower corners.
You. Radiator 13, refrigerant heat exchanger 11, 1
2 and each pipe line 29c, 2 connected to each device in the pipe room 10.
9d, 16b, 16c and 30c are on the right side of the piping chamber 10.
On the plate 37d side and in the center in the front-rear direction,
One sealing pad disposed on the left end of the partition plate 40
49, and thus a plurality of conduits
Sealed by pad. Each sealing hole 49 has a pipe hole 49a.
Cuts 49b connecting the side end of the left side plate 37c with the
You. After the piping is completed, remove the right side plate 37d.
With the sealing pad 49 inserted into the pipe from the right side
Can be taken. Center partition around sealing pad 49
Forming the plate 40 and the right side plate 37d in a sealed state
Thus, the piping chamber 10 and the heat exchange chamber 14 are partitioned. Further, each of the heat exchangers 11 to 13 was connected.
The pipe is oblique to the lower heat exchanger 12 and radiator 13.
It is routed diagonally along the arrangement. As described above, the outdoor air conditioning unit 2
In the longitudinal direction of the outdoor unit, the engine room 7 and the piping room 10
Side by side, the ventilation passage 46 is arranged at the lower part of the engine room 10, and
A ventilation fan 47 is arranged between the ventilation passage 46 and the piping room 10.
It is location. The rear side in the piping chamber 10 is
Side accumulator 8 and sub accumulator 9
In a position facing the ventilation fan 47 in the piping room 10.
The tank has an oil supply tank 24a and a cooling water reserve.
The tank 30a is arranged, and the temperature of the oil deteriorates.
Can be prevented. A recess on the front side of the oil supply tank 24a
24a1, the cooling water reserve tank 30a is located
I have. Further, the inlet 24a of the oil supply tank 24a
2. The supply port 30a1 of the cooling water reserve tank 30a,
All the supply ports 30a2 to the radiator 13 are tilted forward.
Side, that is, in front of the outdoor unit 2 in the front-rear direction
The engine 5 is aligned by removing the front side plate 37a.
Equipment can be easily replenished. In the engine room 7, the outdoor air conditioning unit 2 is stored.
The inspection board 400 used at the time of maintenance inspection is
a, and can be easily operated by removing the front side plate 37a.
Can be made. In the engine room 7,
The engine 5 and the compressor 6 are arranged side by side. An air cleaner 21c is disposed above the compressor 6.
The exhaust silencer 23c and the oil separator
23d are arranged side by side. Air cleaner 21c
The intake pipe 21a connected to the upstream side of the engine room 7
The central partition plate 40 and the top wall of the outdoor heat exchanger room 14
Through the top plate 37e constituting the
The gas mixer 21b connected to the downstream side of the
It is connected to the intake port of the engine 5. Oil separation
The exhaust pipe 23a connected to the upstream side of the
7 and a central partition plate 40 constituting the ceiling wall and an outdoor heat exchanger room
14 through the top plate 37e constituting the top wall and open to the outside
And an exhaust system connected downstream of the oil separator 23d.
The exhauster 23c is connected to the exhaust heat exchanger 23b.
You. The exhaust heat exchanger 23b is provided on the front side of the engine 5.
And is disposed on the compressor side in the longitudinal direction of the exhaust heat exchanger 23b.
Arrange the air outlet 23b1 and slide it beside the cylinder head 5a.
A gas mixer 21b containing a roto-lut is arranged,
The mixer 21b and the intake silencer 21c are connected to the intake pipe 21a1.
Connected. The compressor 6 is an extension of the crankshaft of the engine 5
And the entire cylinder head 5a of the engine 5
Is located at a lower position, thereby increasing the space above the compressor 6.
It can be used effectively, air cleaner 21c, and exhaust
Side by side silencer 23c and oil separator 23d
The engine room 7 can be made smaller by arranging it. Also, exhaust heat exchanger
Exhaust pipe 23a between 23b and oil separator 23d
1 can be shortened, and the workability of attaching and detaching the exhaust pipe 23a1 is improved.
You. The exhaust gas is connected to the exhaust pipes 23a and 23a1 and the exhaust pipe.
Cooled when flowing through the lens 23c and separated from the exhaust
To form drain water with an acidic content. Mist separator
Also in 23e, the desorbed gas having an acid content is separated from the exhaust gas.
Len water is formed. Each of these drain waters is connected to a pipe 40
1, 402, 403, and is led to the neutralizer 104.
Neutralizes the drain water with the neutralizer 104 of
And drain. Oil separator 23d is oil return
It communicates with the oil pan of the engine 5 through the passage 106,
Through the breather passage 107 to the cylinder head 5a.
Through. Engine at a position other than above engine 5
The space above the compressor 6 connected to the engine 5 in the chamber 7
Air cleaner 21c, exhaust silencer 23c and mistake
And a neutralizer 1 under the compressor 6.
04, and their positional relationship is higher than that of the neutralizer 104.
The exhaust heat exchanger 23b is arranged at a position
Air cleaner 21c, exhaust silencer 23c and
The mist separator 23e is arranged, and the height of the engine room 7 is reduced.
Can be lowered. In addition, the condensed water in the exhaust heat exchanger 23b is checked.
In fact, it can be led to the neutralizer 104. In addition, mist separator 2
The condensed water in 3e can be reliably guided to the neutralizer 104. The exhaust silencer 23c, the mist separator
The radiator 23 e and the neutralizer 104 are provided for the indoor air conditioning unit 2.
Located on the right side, the drain port of the exhaust heat exchanger 23b is also on the right side
, Drain water piping 401, 402,
403 is short and drain water does not stay. Air near the intake port of the engine 5
The cleaner 21c and the oil separator 23d are adjacent to each other.
The oil separated by the oil separator 23d is
The conduit 108 leading to the cleaner 21c can be shortened. Also,
The air cleaner 21c and the gas mixer 21b of the engine 5
Between the intake pipes 21a1 can be shortened. Next, the exhaust heat exchanger 23b will be described.
You. The exhaust heat exchanger 23b is configured as shown in FIG.
It is. The exhaust heat exchanger 23b is on the exhaust side of the engine 5.
Engine 5 and the exhaust heat exchanger 23b
It is integrated. The exhaust heat exchanger 23b has an expansion chamber of an exhaust passage.
The upstream heat exchange section 210 having irregularities in the
Downstream heat exchange composed of screw pipe with non-circular surface
A part 211 is provided. The upstream heat exchange section 210 is
A U-shaped exhaust passage expansion chamber 212 is formed therein.
Fins 213 and projections 214 inside the expansion chamber 212
Are formed. Inside this expansion chamber 212 is one side
From 207c, the partition wall 207d is close to the other side 207e.
The upper inflation chamber 2 extending in contact with and communicating with the side 207e.
12a and a lower expansion chamber 212b are formed. Upward expansion of the exhaust passage of the upstream heat exchange section 210
An upper cooling water passage 215a is formed around the chamber 212a.
The upper cooling water passage 215a extends to the partition wall 207d.
It is growing. In addition, the lower cooling chamber is provided around the lower expansion chamber 212b.
A water passage 215b is formed, and enters through a cooling water inlet 226.
The cooling water flows rightward in the downstream heat exchange section 211 and then
After entering the cooling water passage 215b, the lower cooling water passage 215b
Flows into the upper cooling water passage 215a,
Flow to the right through the water passage 215a, above the casing 207
It is discharged from the cooling water outlet 215c formed at the right end,
Enter the cooling water pipe 29e2. The upstream heat exchange section 210 is
A connecting portion (not shown) is formed on the engine 5.
It can be connected directly to the exhaust side of the car. Engine 5 exhaust
Exhaust gas is formed at four points of the casing 207 from the air side.
Exhaust gas inlet 216 into the upper expansion chamber 212a.
This exhaust gas is guided to the lower expansion chamber 212b and further
To the downstream heat exchange unit 211. As described above, mixing in the combustion chamber of the engine 5
High-temperature, high-pressure exhaust gas generated by combustion of gas
The heat is introduced into the heat exchanger 210 on the upstream side of the heat exchanger 23b.
Here, it exchanges heat with cooling water and is cooled. The expansion of the exhaust passage of the upstream heat exchange section 210
Exhaust gas from the exhaust side of the engine 5 by the tension chamber 212
Exhaust resistance is reduced, exhaust efficiency is improved,
In addition, the exhaust pressure is reduced, and the silencing effect is improved. Only
Also, the fin 2 is provided in the expansion chamber 212 of the upstream heat exchange section 210.
The projections and depressions 13 and the projections 214 form irregularities.
Therefore, the surface area increases, and high heat exchange efficiency can be obtained.
it can. The exhaust gas passage of the downstream heat exchange section 211 is disconnected.
The surface is composed of a non-circular screw pipe 220,
One end of each of the plurality of screw pipes 220 is closed
And a gasket 222 on the other side.
In addition, a guide plate 223 is provided
224. This screw pipe 220
Has a cross-shaped cross-section, and radially protrudes
The two convex portions 220a extend the outer circumference of the screw pipe 220.
I draw a spiral along the direction. The pipe unit 224 includes the casing 207
The cooling water chamber 225 formed in the
A cooling water inlet 226 is formed below the cooling water inlet 225, and a cooling water inlet 226 is formed above the cooling water inlet 226.
A water drainage outlet 227 is formed. Cooling from engine 5
Water is supplied from the cooling water inlet 226 to the cooling water chamber 225,
Circulating through the cooling water chamber 225, the cooling water exit 227
The heat is supplied to the lower cooling water passage 215b of the upstream heat exchange unit 210.
You. The closing plate 22 of the pipe unit 224
1 is sealed with an O-ring 228,
29 and the cover 230 is bolted to the casing 231
It is fastened and fixed to the lower part of the side part 207e of the 207.
A collective exhaust chamber 232 is formed by the cover 230 and the cover 2
An exhaust gas outlet 233 is provided at the center of
A drain water outlet 234 is provided below the bar 230.
I have. The other of the pipe units 224 is a gasket
222 is a bolt 235 to the side 207 of the casing 207.
c Tighten to the lower part, and
The bar 236 is bolted 237 to the side 2 of the casing 207.
07c. With this cover 236
A communication collective exhaust chamber 238 is formed.
238 is the lower expansion chamber 212b of the upstream heat exchange section 210
Exhaust gas is introduced. This exhaust gas is a communication collective exhaust
Screw pipe of pipe unit 224 from chamber 238
The air is guided to the collective exhaust chamber 232 through the
The gas is exhausted from the air chamber 232 through an exhaust gas outlet 233. As described above, the exhaust of the downstream heat exchange section 211
Since the passage is constituted by the screw pipe 220,
The exhaust gas is swirling in the screw pipe 220
Flow to the exhaust gas cooling water due to the turbulence effect of the exhaust gas
The heat transfer coefficient is increased, and high heat exchange efficiency is obtained. In the exhaust heat exchanger 23b, the upstream side
The exhaust gas is exchanged between the heat exchange unit 210 and the downstream heat exchange unit 211.
Heat exchanges with the cooling water and the heat
As soon as it is collected, its temperature and pressure are reduced and
Air noise is reduced. Next, a specific example of the cooling water circulation system S will be described.
An example will be described with reference to FIGS. The engine 5 is disposed in the engine room 7 and
An exhaust heat exchanger 23b is disposed in front of the engine 5 and
A thermostat 28c is arranged above the gin 5,
At a predetermined temperature, for example, 60 ° C. or lower, the valve 28c5 closes,
c6 is open. The thermostat 28c is shown in FIG.
As shown, the valve body 28c1 communicates with the pipe 29b.
The valve seat 28c2 communicates with the pipe 29q side.
3 are formed. A wax part is provided in the valve body 28c1.
28c4, and the valve 2c is provided on one side of the wax portion 28c4.
8c5 is provided with a valve 28c6 on the other side. The cooling water temperature around the wax part 28c4
At a constant temperature of, for example, 60 ° or less, the valve 28c5
8c2 is closed while valve 28c6 opens valve seat 28c3 fully.
are doing. When the cooling water temperature exceeds 60 °, the valve seat 28c2
Starts to open, while closing the valve seat 28c3. temperature
As the opening increases, the opening degree of the valve seat 28c2 increases.
The degree of opening of the seat 28c3 decreases, and the water temperature exceeds 75 °.
And the valve seat 28c2 is fully opened, and the valve seat 28c3 is fully closed.
You. Air is vented above the valve casing 28c7.
The hole 28c8 is opened, and the inlet 30
b. Further, the left side plate 37c below the engine 5
The first cooling water pump 28a for warming up the engine is
In the vicinity of the introduction passage opening that constitutes the ventilation passage in the engine room 7
It is arranged and cooled by the introduced air. Also, the first cold
The recirculating water pump 28a may be disposed in the piping chamber 10,
Also in case of cooling in the piping room 10 constituting the ventilation passage
Is done. The main accu
A murator 8 is disposed, and a second cooling water is provided below the right front side.
Pump 28e is arranged, and linear three-way valve 28d is
It is arranged above the accumulator 8. Second cold
The recirculating water pump 28e is also installed in the piping room 10 constituting the ventilation passage.
And cooled. Thus, the exhaust heat exchanger 23b and
The second for driving circulation of the hot water circulating in the accumulator 8
Cooling water pump 28e is placed in the pipe room 10 to be ventilated.
In addition, by disposing it near the ventilation fan 47,
Main accumulator 8 for storing liquid-phase refrigerant
Are arranged, which allows for more effective cooling
You. A radiator is provided on the front side in the outdoor heat exchanger room 14.
Data 13 is arranged. For operation of the linear three-way valve 28d
Therefore, the pipe 29b is different from the pipe 29c or the pipe 29f1.
It is designed to communicate with somebody. The pipe 29a1 is a jacket for cooling water of the engine 5.
The first cooling water pump 28a communicates with the first cooling water pump 28a.
It is arranged along the plate 37c. Pipe 29e1 is exhaust
The lower side of the heat exchanger 23b is connected to the second cooling water pump 28e.
Through the lower part of the engine 5 and into the ventilation passage 46,
Further, it is arranged in the ventilation passage 46. 29s piping
The first cooling water pump 28a and the thermos are connected via a pipe 29q.
Tat 28c communicates with the engine room from below the front side plate 37a.
While rising along the right side in 7, the pipe 29q is compressed
It is arranged above the machine 6. The pipe 29e2 is exhausted.
The right side of the air heat exchanger 23b communicates with the pipe 29s, and the compressor
6 above. The piping 29b is connected to the thermostat 28c
A The three-way valve 28d communicates with the compressor 6 from above the engine 5.
Through the right middle plate 44b
It is arranged above the murator 8. The pipe 29p is the second
Cooling water pump 28e, one of which is connected via a pipe 29c.
The other end communicates with the radiator 13 and the other
The pipe 29p communicates with the near three-way valve 28d and the right side plate 37d.
And the pipe 29c extends below the radiator 13.
Pipe 29f1 is connected to the linear three-way valve 28d
It is arranged above the in-accumulator 8. Piping
29d extends downward from the upper part of the radiator 13 and
f2 and communicates with the second cooling water pump 28e.
You. The water line 30c connected to the radiator 13
Cooling water reserve extending downward from above the radiator 13
It is connected to the tank 30a. Cooling water reserve tank
30a is arranged on the right front side of the piping room 10. Piping
29r communicates the pipe 29s and the pipe 29b,
It is located above. The radiator 13 is located inside the outdoor heat exchanger room 14.
And one of the radiators 13
Cooling water inlet 13a and cooling water outlet 13b
It is location. A cooling water inlet 13a and a cooling water outlet 13b are provided.
At one end in the left-right direction of the installed outdoor unit, and
A linear three-way valve 28d is provided below the exchanger room 14
Emulator 8 and second cooling water pump 28e, for cooling water
A reserve tank 30a is arranged,
By disposing them, the length of the pipe between them can be shortened. In the outdoor heat exchanger room 14,
In addition to the radiator 13, the refrigerant outdoor heat exchangers 11, 12
The refrigerant inlets of the outdoor heat exchangers 11 and 12 for the refrigerant
The medium outlet is the same as the cooling water inlet and cooling water outlet of the radiator 13.
At the right end. The outdoor heat exchanger room 14 and the lower piping room 10
A pipe penetrating the partitioning central partition plate 40 is provided at its end.
And adjacent each other. That is, the center partition plate 40
In the through hole, a resilient member (rubber) integrated sealing pad 4
9 to close the through hole and seal
Pipe 49 for the refrigerant, return pipe and cooling water,
At least four conduit holes 49a for the return pipe are provided.
Since pipes are concentrated, connection work of pipes is easy. Each sealing hole 49 has a pipe hole 49a.
Cuts 49b connecting the side end of the left side plate 37c with the
You. After the piping is completed, remove the right side plate 37d.
With the sealing pad 49 inserted into the pipe from the right side
Can be taken. Center partition around sealing pad 49
To form a sealed state with the plate 40 and the right side plate 37d.
Thus, the piping chamber 10 and the heat exchange chamber 14 are partitioned. The inlet 30b of the radiator 13 and the water inlet
Cooling reserve tank 30a having the same position at the same end
And make the front side plate 37a of the outdoor unit removable.
To the radiator 13 and the cooling reserve tank 30a.
Water supply work is easy. Also, the oil to engine 5
The oil supply tank 24a is also at the same end and the oil supply tank 24a.
The inlet 24a2 of the tank 24a is a reservoir tank for cooling water.
30a1 above the water inlet 30a1,
It is easy to supply ill. Oil supply tank
The injection port 24a2 of the opening 24a2 is kept open.
When pouring water, even if water spills, it may mix with oil.
Absent. As described above, the room which is the outdoor air conditioning unit 2
An engine room 7 for accommodating the engine 5 and a radiator
13 and an outdoor heat exchanger room 14 for accommodating heat with the refrigerant.
To accommodate the waste heat recovery unit that is the main accumulator 8
Three adjacent chambers of the plumbing chamber 10
Radiator 13 and main accumulator from engine 5
A cooling water circulation path leading to the
Immediately after reaching the piping room 10 from the engine 5 in the seki room 7
The pipe 29b is located below and to the right of the thermostat 28c.
Extending from the engine room 7 to a portion approximately at the middle height of the right middle plate 44b.
Through the pipe chamber 10 and into the linear three-way valve 28d.
Connected. Branch at the linear three-way valve 28d, one of which is piping
Radiation in the outdoor heat exchanger room 14 by 29c and 29d
Return to the piping chamber 10 via the
f1 and 29f2 are main accumulators in the piping chamber 10.
After arriving at the waste heat recovery unit, which is the mullet 8,
10 and then merge via pipes 29p and 29e1.
Cooling water circulation to return to the engine 5 in the engine room 7
Equipped with a system S to efficiently branch and join pipes
By doing so, the engine room 7, the piping room 10, and the outdoor heat exchanger
The number of cooling water pipes penetrating the partition wall
Can be minimal. The cooling water circulation system S in the piping chamber 7
Of the cooling water pipe in the piping chamber 10 constituting the pipe 29c, 2
9d, 29f1, and 29f2 as shown in FIGS.
As shown, the indoor unit is viewed from above and one end in the longitudinal direction.
(Right end), the piping length in the piping room 10
Shorter, lower costs and more cooling
The water pipe can be made compact. The piping 29c in the radiator 13
13a, which is connected to the valve, and a linear three-way valve as a branch portion
28d and waste heat recovery which is the main accumulator 8
Between the inlet 8a to which the pipe 29f1 in the vessel is connected
The position of each other in the height direction is the entrance 13a, the linear three-way
The radiator 1 is arranged in the order of the valve 28d and the inlet 8a.
3. The two-way linear valve 28d at the branch and the main accumulator
Radiator (waste heat recovery unit) 8 and radiator
An outlet 13b to which a pipe 29d of the filter 13 is connected;
A junction 29h of the pipe 29d and the pipe 29f2,
Outlet 8b of the accumulator (waste heat recovery unit) 8
The position in the height direction between the outlet 13b and the junction
29h, exit 8b in order
Between the heater 13 and the main accumulator (waste heat recovery unit) 8
Pipes 29c, 29d, 29f constituting the cooling water pipeline of
1,29f2 air can be removed. It should be noted that the thermostat 28c
In the middle of the pipe line 29 connecting the two-way valve,
However, after stopping the engine, valve 28c5
With the seat 29c2 open, the air flows through the pipe 29, the valve seat.
Air vent tube A passing through air vent hole 28c8 through 28c2
Through to the inlet 30b. In addition, water
The material of the racket 28b conduits 29a2 and 29a2 is the engine
Even during operation, air in line 29g is
-Extracting the air bleeding pipe D from the mostostat 28c
Can be. As described above, the engine room accommodating the engine 5
7 and an outdoor unit which is the outdoor air conditioning unit 2 in which
The gin 5 and the radiator 13 are connected with each other through a cooling water passage.
The first cooling water pump 28a arranged in the middle of the water passage
Alternatively, the cooling water is circulated by the second cooling water pump 28e.
Cooling water circulation system S for the outdoor unit
The fresh air is led to the engine room 7 and the air in the engine room 7 is
A ventilator K for discharging to the outside is provided.
On the way to the passage of fresh air from the outside of the ventilation device K to the engine room 7
Or a first cooling water port near the opening of the introduction passage in the engine room 7.
A pump 28a or a second cooling water pump 28e,
As a result, the temperature of the cooling water pump is controlled by the fresh air introduction passage.
It can be kept low, and the durability of the cooling water pump improves.
You. Further, an engine room 7 for housing the engine 5,
The main accumulator of the liquid phase, which is partitioned from the engine room 7
8 and a piping chamber 10 for accommodating the sub-accumulator 9
An outdoor unit, which is the outdoor air conditioning unit 2 disposed, and an engine
5 and the radiator 13 are connected by a cooling water passage.
The first cooling water pump 28a disposed in the middle of the passage or
The cooling water is circulated by the second cooling water pump 28e.
And a cooling water circulation system S for the outdoor unit.
Cooling water pump 28a or second cooling water pump 28e
Is disposed in the piping chamber 10 and is operated by a liquid phase accumulator.
Temperature of the cooling water pump can be kept low.
The durability of the pump is improved. Also, an engine room 7 for housing the engine 5,
The main accumulator of the liquid phase, which is partitioned from the engine room 7
8 and a piping chamber 10 for accommodating the sub-accumulator 9
An outdoor unit, which is the outdoor air conditioning unit 2 disposed, and an engine
5 and the radiator 13 are connected by a cooling water passage.
The first cooling water pump 28a disposed in the middle of the passage or
The cooling water is circulated by the second cooling water pump 28e.
Cooling water circulation system S for outdoor units
Air to the engine room 7 via the piping room 10 and
Ventilation device K that discharges air in seki room 7 to the outside
The fresh air from outside of the ventilator K to the engine room 7 is provided.
In the introduction passage or near the opening of the introduction passage in the engine room 7
The first cooling water pump 28a or the second cooling water pump
28e, and the cooling water pump is
The temperature can be kept low, and the durability of the cooling water pump is
improves. [0095] As described above, the first aspect of the present invention is as described above.
Is a fresh air introduced into the lower part of the outdoor unit from outside with a ventilation fan
Was introduced into the engine room and was warmed in the engine room.
Air is used to define the inner engine room and the outdoor heat exchanger room of the partition plate.
Heat exchange from the ventilation air outlet to the engine room side partition plate
Led to the equipment room, and the outdoor heat exchanger room
Exhaust the air inside to the outside, and use the ventilation fan for outdoor heat exchange.
We use out effect. Further, the passage of the fresh air introduced by the ventilation fan
A cooling water pump is installed inside or near the introduction passage in the engine room.
To keep the temperature of the cooling water pump low.
And the durability of the cooling water pump is improved.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a diagram showing an overall configuration of an engine-driven air conditioner. FIG. 2 is a front view of the outdoor air conditioning unit. FIG. 3 is a right side view of the outdoor air-conditioning unit. FIG. 4 is a plan view of a floor of an outdoor heat exchanger room. FIG. 5 is a plan view of a pad. FIG. 6 is a schematic diagram of a sectional plane of an engine room and a piping room. FIG. 7 is a sectional view of an electrical component box. FIG. 8 is a layout diagram of a water inlet of an engine cooling water. FIG. 9 is a sectional view of a water inlet. FIG. 10 is a cross-sectional view of the exhaust heat exchanger. FIG. 11 is a front view showing a cooling water circulation system. FIG. 12 is a right side view showing the cooling water circulation system. FIG. 13 is a plan view of a cooling water circulation system. FIG. 14 is a sectional view of a thermostat. FIG. 15 is a sectional view showing a schematic configuration of an outer panel wall of the outdoor air conditioning unit. [Explanation of Signs] 2 outdoor air conditioning unit 5 engine 7 engine room 13 radiator 14 outdoor heat exchanger room 28a first cooling water pump 28e second cooling water pump 39 partition plate 40b ventilation air outlet 44 outdoor heat exchange Ventilation fan 47 Ventilation fan S Cooling water circulation system K Ventilation device

Continuation of the front page (56) References JP-A-2-37108 (JP, A) JP-A-3-213929 (JP, A) JP-A-5-34035 (JP, A) JP-A-60-134164 (JP) , A) (58) Fields investigated (Int. Cl. ⁷ , DB name) F24F 5/00 F25B 27/00

Claims (1)

(57) [Claims] [Claim 1] An upper part of an outdoor unit and a lower part of the outdoor unit are partitioned by a partition plate, and an engine and a compression driven by the engine are directed toward a partition wall partitioning a lower part of the outdoor unit. the engine room for accommodating the machine is provided, at the other of said partition wall, from the discharge port of the compressor during the cooling operation
High-pressure refrigerant to the outdoor heat exchanger and the expansion valve
The refrigerant passes through the indoor heat exchanger and becomes low pressure and passes through the indoor heat exchanger.
A plumbing chamber containing a pipeline with a four-way valve leading to the suction port
Oil supply for supplying oil to the engine in this piping room.
Tank and place outside air into the piping chamber.
A piping chamber air inlet for the inlet and a refrigerant pipe from the outdoor unit to the indoor unit
Guiding, a refrigerant pipe from the indoor unit to the outdoor unit and the
I will lead the fuel line to the engine from outside to the piping room.
In the upper part of the outdoor unit, a fan for outdoor heat exchange and a radiator
And an outdoor heat exchanger chamber having the outdoor heat exchanger, and communicating the engine and the radiator with a cooling water passage,
Fresh air introduced into the pipe chamber from outside the cooling water passages the outdoor unit cooling water circulation system which is adapted to circulate the cooling water by a cooling water pump disposed in the middle of the ventilation fan provided in the partition wall It is introduced into the engine room to the front
The air warmed in the engine room is cooled by the ventilation fan through the ventilating air discharge port provided on the engine room side partition plate which defines the inner engine room and the outdoor heat exchanger room of the partition plate. A ventilation device that guides the air into the exchanger room and discharges the air in the outdoor heat exchanger room to the outside with the outdoor heat exchange blower fan. An engine-driven heat pump device, wherein the cooling water pump is arranged near an introduction passage in a room.