JPH10238825A - Outdoor machine unit of engine driven heat pump - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make compact the whole body of an outdoor equipment unit by making compact a power section housing case in an outdoor machine unit and laying out an air cleaner outside the power section housing case while using the space which is considered hitherto as a dead space. SOLUTION: In an outdoor machine unit of an engine-driven heat pump where an auxiliary case is set up in the upper part of a power unit housing case and a fan shroud, which covers a fan layout cavity, is provided in this auxiliary case, an air cleaner 31, an oil separator 35 an exhaust silencer 43 are laid out around the cavity of the auxiliary case. A side wall of a casing 80 which constitutes the air cleaner 31 and so forth, is formed in the shape of an arc surface along the aforesaid cavity so that this side wall 83 may serve as a part of the fan shroud in structure.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an outdoor unit in a heat pump device such as an engine driven air conditioner.

[0002]

2. Description of the Related Art Conventionally, an engine-driven heat pump device in which a compressor is driven by an engine is generally known in air conditioners and the like. When applied to an air conditioner, the engine-driven heat pump device includes an indoor unit disposed in one or more rooms and an outdoor unit connected to the indoor unit.

The above-mentioned outdoor unit accommodates a power section including a compressor and an engine in a power section storage case, and holds an outdoor heat exchanger and a blower fan for the outdoor heat exchanger above the power section storage case. Cases are installed, and the fuel system, the intake / exhaust system, the cooling system, and the lubrication system of the engine and a part of the refrigerant circulation system connected to the compressor are arranged in these cases. See JP-A-61-162861).

[0004]

In a conventional outdoor unit of this type of heat pump device, an air cleaner provided in an intake system of an engine is usually provided together with a power unit such as an engine in a power unit storage case. However, in this case, the power storage case becomes large, and it is difficult to make the outdoor unit compact. Further, since the inside of the power storage case where the engine is located is heated to a high temperature of about 60 to 70 ° C., if an air cleaner is disposed here, the intake air temperature rises, and the intake air density decreases accordingly, which is disadvantageous in terms of engine performance. There was also the problem of becoming.

Conventionally, in addition to the air cleaner, an oil separator for removing oil in blow-by gas guided from the engine to the intake system, and an exhaust silencer provided in the exhaust system are also arranged in the power storage case. Therefore, the power storage case tends to be larger.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problem, and it is an object of the present invention to reduce the size of a power storage case and to utilize an air cleaner or the like outside the power storage case by using a space which has conventionally been a dead space. It is an object of the present invention to provide an outdoor unit of an engine-driven heat pump device that can reduce the size of the entire outdoor unit by disposing.

[0007]

SUMMARY OF THE INVENTION The present invention relates to a power storage case for storing a power unit including a compressor and an engine, an outdoor heat exchanger installed above the power storage case, and a blower fan for the outdoor heat exchanger. In an outdoor unit of an engine-driven heat pump device provided with a fan shroud surrounding a cavity for arranging a fan, the air cleaner provided in the intake system of the engine is provided with the air cleaner. The air cleaner is arranged around the cavity of the auxiliary case, and the side wall of the air cleaner is formed in an arc shape along the cavity, so that the side wall also serves as a part of the fan shroud. .

According to this structure, the power storage case is reduced in size as compared with the conventional case where the air cleaner is arranged in the power storage case, and the auxiliary case is conventionally dead space. An air cleaner is arranged in the space on the side of the fan shroud, and its side wall also serves as a part of the fan shroud,
The whole outdoor unit is made compact. In addition, the suppression of the rise in the intake air temperature is advantageous in terms of engine performance, and is also advantageous in terms of maintainability.

In the present invention, in addition to the above configuration, an oil separator for separating oil in blow-by gas guided from the engine to the air cleaner is disposed below the air cleaner around the cavity of the auxiliary case. It is preferable that a residual heat introduction chamber is formed below the periphery of the separator, and that a window hole communicating with the residual heat introduction chamber is provided in an upper surface of the power storage case.

[0010] In this case, the oil separator in addition to the air cleaner is arranged in the auxiliary case outside the power unit storage case, so that the power unit storage case is downsized and the entire outdoor unit is further downsized. You. Further, in this case, heat in the power storage case is introduced into the residual heat introduction chamber through the window hole, whereby the oil separator is appropriately warmed, so that deterioration of the oil in the oil separator is prevented.

Further, in the present invention, an exhaust silencer provided in an exhaust system of an engine is disposed above the air cleaner around the cavity of the auxiliary case, and a side wall of the exhaust silencer is attached to the air cleaner. It is preferable that the side wall of the exhaust silencer besides the side wall of the air cleaner also function as a part of the fan shroud by being formed in an arcuate surface shape along the cavity portion so as to be continuous with the side wall.

[0012] In this case, the exhaust silencer is disposed in the space beside the fan shroud of the auxiliary case in addition to the air cleaner (and the oil separator), so that the size of the power unit storage case can be reduced, and the overall outdoor unit unit can be made compact. Is further promoted.

[0013]

Embodiments of the present invention will be described with reference to the drawings.

1 to 3 show an outdoor unit and its internal structure in an air conditioner as an example of a water-cooled engine driven heat pump device. As shown in FIGS. 1 and 2,
The outdoor unit has a framework including a power unit storage case 1 and an auxiliary case 10 disposed above the power unit storage case 1, and has a structure in which the components of the outdoor unit are incorporated in this framework.

The power unit storage case 1 stores and holds a power unit including a compressor of a heat pump device and an engine for driving the heat pump unit. The power unit storage case 1 has a substantially rectangular box shape.
In this embodiment, the frame 2 which is a main part of the case 1 has at least upper and lower surfaces, one side surface, and a back surface 4.
It is constituted by a casting in which the wall of the surface is integrally formed.

More specifically, the frame 2 is
As shown in FIG. 4, an opening 3 is provided on almost the entire front side, and an opening 4 is partially provided on one side (the right side when viewed from the front). Each wall of the back part 2c and the left side part 2d, a column 2e provided at a corner between the front and right sides, and a horizontal part 2f of the right side are integrally formed by aluminum die casting. The interior surrounded by the wall is an engine room 5 that houses the power unit. The bottom surface portion 2b projects outward from the left side surface portion 2d of the frame 2, and a small chamber for mounting a refrigerant circulation system pipe or the like is formed above the projecting portion 2g.

The front panel 2 covers the front opening 3 of the frame 2, the right panel covers the right opening 4, and the overhanging portion 2g extends outside the left side 2d.
The power unit storage case 1 is formed by detachably attaching various covers and panels (partially not shown) such as a side cover 201 surrounding the small chamber 200 above and a lower back cover covering the lower rear side with bolts or the like. Is configured.

On the other hand, the auxiliary case 10 has a synthetic resin main body 11 having a fan placement cavity 12 surrounded by a fan shroud 13. Ceiling cover 132,
The right side cover 131, the fan guard 130a forming a part of the front cover 130, and the like are detachably attached (see FIGS. 9 and 10).

The main body 11 of the auxiliary case 10 is installed and fixed on the frame 2 of the power storage case 1, and the above-mentioned various panels and covers are attached thereto. By attaching the outdoor heat exchanger 15 and the radiator 56 located on the front side thereof, a frame portion of the outdoor unit is configured. In FIGS. 1 and 2, for convenience, both cases 1 and 2 are used.
The inside is shown with the cover and panel removed.

A power unit including a compressor 21 of a heat pump device and an engine 22 for driving the compressor 21 is stored in an engine room 5 formed by the frame 2 of the power unit storage case 1. In this embodiment, the engine 22 is a water-cooled gas engine.
2 and a rotating shaft of the compressor 21 are connected via a drive belt 23, and the housing of the compressor 21 is connected to the crankcase of the engine 22, and the engine 22 and the compressor 21 are mounted. 24 and mount bracket 25
And is installed on the bottom surface 2b of the frame 2 via the.

The auxiliary case 10 has a blower fan 14 disposed in a hollow portion 12 thereof. And
An intake system, a fuel system, an exhaust system, a lubrication system, and a cooling system of the engine, and a part of a refrigerant circulation system connected to the compressor 21 are disposed over the two cases 1 and 10.

The intake system of the engine is an air cleaner 31.
And an intake pipe 32 for introducing outside air to the air cleaner 31 and an intake pipe 33 for guiding the air passing through the air cleaner 31 to the engine. The air cleaner 31 and the intake pipe 32 are arranged in the auxiliary case 10 as described later in detail. The intake pipe 33 extends downward from the air cleaner 31, extends into the engine room 5 through a window 105 described later, and is connected to the mixer 30 installed above the head portion 22 b of the engine 22. Then, the air and the fuel are mixed by the mixer 30, and the air-fuel mixture is supplied to the engine 22.

A blow-by gas passage 34 is provided between the engine 22 and the intake system.
4 is provided with an oil separator 35. And
The oil in the blow-by gas flowing out of the engine 22 is separated by the oil separator 35, and the blow-by gas after the oil separation is guided to the air cleaner 31, while the separated oil flows back on the wall surface of the blow-by gas passage 34, and The oil is collected in an oil tank 45 through the return passage 34a.

The fuel system of the engine includes a fuel supply pipe 36 connected to the mixer 30.
Of the frame 2 extends through the left side surface 2d of the frame 2 to the small chamber 200 outside the frame 2 and is connected to an external fuel gas supply source (not shown). 37 and 38 and a zero governor 39 serving as a pressure-reducing control valve are interposed, and these are arranged in the small chamber 200.

The exhaust system of the engine includes an exhaust pipe 4 derived from an exhaust gas heat exchanger 42 connected to the side of the engine 22.
The exhaust pipe 41 extends upward, reaches the inside of the auxiliary case 10 through a hole (not shown) provided on the upper surface of the frame 2, and is connected to the exhaust silencer 43 disposed above the air cleaner 31. It is connected. Reference numeral 44 denotes a neutralizer for neutralizing acidic drain water flowing down the drain hose 91 from the exhaust gas heat exchanger 42, the exhaust silencer 43, and the like, and is disposed at the lower end of the side in the engine room 20.

The lubrication system of the engine has an oil tank 45. The oil tank 45 is disposed on the side of the engine 22 and below the horizontally arranged cylinder block and the head portion 22b.
6 is connected to the oil pan of the engine 22.

The cooling system of the water-cooled engine is provided with a cooling water pipe 50a for guiding the cooling water discharged from the water pump 51 to the engine 22, and the cooling water pipe 50a is supplied from the exhaust gas heat exchanger 42 via the water pump 52 to the engine 22. Is connected to the cooling water inlet of the water jacket 53, and the thermostat 5 is connected to the cooling water outlet of the water jacket 53.
The cooling water pipe 50b led out through the line 4 is a linear three-way valve 5
5 is connected. Further, two cooling water pipes 50c, 50d are led out from the linear three-way valve 55, and the cooling water pipes 50c, 50d are arranged in a radiator 56 arranged behind the fan 14 and a double pipe heat exchange arranged above the fan shroud 13. Cooling water pipes 50e and 50f respectively connected to the radiator 56 and the double-tube heat exchanger 57 and connected to the cooling water pump 5
1 connected. In addition, a recovery tank 58 and a pressure cap 59 are connected to the cooling water pipe 50f.

The radiator 56 and the outdoor heat exchanger 15
Is disposed behind the blower fan 14. Also,
The double-tube heat exchanger 57, the recovery tank 58, and the pressure cap 59 are disposed above the auxiliary case 10.

On the other hand, a refrigerant circulation system connected to the compressor 21 includes a discharge side refrigerant pipe 60a having an upstream end connected to a discharge port of the compressor 21 via a flexible tube 61a, and a flexible tube connected to a suction port of the compressor 21. A suction side refrigerant pipe 60b is connected to the downstream end side via a 61b. The downstream end of the discharge side refrigerant pipe 60a and the upstream end of the suction side refrigerant pipe 60b are connected to the four-way valve 62. An oil separator 63 is interposed in the discharge side refrigerant pipe 60a, and an accumulator 64 is interposed in the suction side refrigerant pipe 60b. The oil separator 63
The accumulator 64 is disposed on the left side of the auxiliary case 10.

From the four-way valve 62, the refrigerant pipes 60c, 60e
Is derived. The refrigerant pipe 60c extends downward to reach the small chamber 200 outside the left side surface part 2d of the frame 2, and in this small chamber 200, the refrigerant pipe 60c is branched into a plurality through a packed valve 65 and a strainer 66. 60
A flange 67 is provided at the tip of d.

The refrigerant pipe 60e reaches the outdoor heat exchanger 15 via the double pipe heat exchanger 57 disposed above the fan shroud 13, and further reaches the refrigerant pipe 60f led out of the outdoor heat exchanger 15. Is the left side 2 of the frame 2
d, and reaches the branch 71 through the filter dryer 68, the sight glass 69, and the packed valve 70 in the small chamber 200. The branch pipe 60g led out of the branch 71 is subjected to electronic expansion. A valve 72 and a strainer 73 are provided, and a flange 74 is provided at the tip of each branch pipe 60g.

A pipe for connection to a plurality of indoor heat exchangers (not shown) is detachably connected to the flanges 67 and 74 at the ends of the branch pipes 60d and 60g.

As shown in FIGS. 9 and 10, the lower part of the main body 11 of the auxiliary case 10 is fixed to the upper part of the frame 2 of the power storage case 1 with bolts, and the outdoor heat exchange is The lower part of the heat exchanger 15 is fixed with bolts, and the side surface and the upper surface of the
5 and the radiator 56 with bolts. A stay 135 is provided near the left side of the auxiliary case 10.
The stay 135 has a lower portion fixed to the front upper portion of the frame 2 and an upper portion fixed to the upper rear portion of the outdoor heat exchanger 15 by bolts. An accumulator 64 is fixed to the stay 135, and the accumulator 64 is fixed to the stay 135. The oil separator 63 is fixed with bolts, and a double-pipe heat exchanger 57 is fixed above the stay 135 so as to hang downward. The right side of the double tube heat exchanger 57 is fixed to the upper side of the casing 80 with bolts.

The blower fan 14 has a fan motor 14a fixed to a stay 14b with bolts, and the stay 14b is fixed to the rear of the main body 11 at the top and bottom. Outdoor heat exchanger 1
5, a rear upper cover 136 and a square cover 137 are fixed to the rear corners of both sides with bolts.
6, 137 is fixed to the frame 2 with bolts. The left side cover of the auxiliary case 10 is formed by fixing the electrical box 138 to the rear upper cover 136 with bolts. Further, the right side cover 131 and the front cover 130 are arranged on the right side and the front of the auxiliary case 10. The ceiling cover 132 includes the heat exchanger 15 and the stay 1
35, are fixed to the upper ends of the electrical box 138 and the front cover 130 with bolts.

The structure of such an outdoor unit in which an air cleaner or the like is disposed in the auxiliary case 10 will be described with reference to FIGS.

The main body 11 of the auxiliary case 10 includes
One side (right side when viewed from the front) of the cavity 12, an air cleaner 31, an oil separator 35 located below the air cleaner 31, a residual heat introduction chamber 79 located below the periphery of the oil separator 35, and an upper part of the air cleaner 31. The exhaust silencer 43 is disposed along the periphery of the cavity 12.

The exhaust silencer 43 and the air cleaner 3
1. The oil separator 35 and the residual heat introduction chamber 79 are composed of a casing 80 integrally formed with the main body 11 of the auxiliary case 10, a cover member 81 attached to the front side of the casing 80, And a cap member 82 that covers an opening partially provided on the front side. The side wall portion 83 of the casing 80 on the side of the hollow portion 12 is formed in an arc shape along the hollow portion 12 so as to also serve as a part of the fan shroud 13.

More specifically, the casing 80 is formed in an arc shape along one side of the hollow portion 12 and in a box shape opened forward, and a chamber constituting the exhaust silencer 43 is provided above the casing 80. Is formed so as to be surrounded by the surrounding wall 80a.
Ob, and a lower part of the chamber constituting the oil separator 35 is formed by being surrounded by a cylindrical surrounding wall 80c. Further, a residual heat introduction chamber 79 which is partitioned by a part of the surrounding walls 80b and 80c and both side walls 80d and whose lower side is opened is formed below the periphery of the chamber constituting the oil separator 35.

Then, the surrounding walls 80a, 80b and the wall 80d
Of these, a portion along the hollow portion 12 is constituted by an arc-shaped side wall portion 83 so as to also serve as a part of the fan shroud 13. Each of the surrounding walls 80a, 80b, 80c has
A flange having a bolt hole 84 is provided.

In the casing 80, a partition wall 85 for partitioning the inside into four expansion chambers 43a, 43b, 43c, 43e and a rib 86 are provided in a portion inside the surrounding wall 80a constituting the exhaust silencer 43. . Further, an exhaust outlet 87 is formed in the expansion chamber 43e at the upper left end, and an exhaust inlet 88, a drain outlet 89, and a pressure equalizing hose connection port 90 are provided at the lower back of the right expansion chamber 43a. The exhaust pipe 41 led from the exhaust gas heat exchanger 42 is connected to 88, and the drain outlet 91 and the equalizing hose connection port 90 are connected to the drain hose 91 and the equalizing hose 92 provided between the neutralizer 44. It has become. A space is provided behind the right rear portion of the casing 80 for passing the exhaust pipe 41, the drain hose 91, and the equalizing hose 92 (see FIG. 2).

An element stay 94 for holding the air cleaner element 93 between the cap member 82 and the air cleaner element 93 is provided in a portion of the casing 80 inside the surrounding wall 80b constituting the air cleaner 31. An enclosure 80 e for isolating air from fresh air before filtration is provided integrally with the casing 80. Further, a rib 95 for increasing the rigidity of the air cleaner 31 is provided. Further, a pipe-shaped intake / outflow portion 96 penetrating from the inside of the air cleaner 31 and penetrating the surrounding wall 80b and protruding downward is continuously provided, and the intake pipe 33 is connected to the intake / outflow portion 96. A communication passage 97 serving as a blow-by gas passage is formed between a portion forming the air cleaner 31 and a portion forming the oil separator 35. The oil separator 35 has a surrounding wall 80c.
Blow-by gas introduction part 1 projecting through
20 are provided.

On the other hand, the cover member 81 is formed so that the front shape corresponds to the casing 80, and
a, 80b, 80c and enclosure 81 coupled to wall 80d
a, 81b, 81c and a wall.
Flanges having bolt holes are provided on the walls 81b and 81c and on the wall, and are fixed to the casing 80 with bolts. A partition wall 98 corresponding to the partition wall 85 is provided in a portion of the cover member 81 that constitutes the exhaust silencer 43, and these partition walls 85 and 9 are provided.
An exhaust passage 99 and an insertion hole 100 for the second pressure equalizing hose 92a are formed at the corresponding positions of the reference numeral 8 in FIG. One end of the second equalizing hose 92a is opened in the expansion chamber 43e, the other end is connected to one end of the equalizing hose connection port, and both ends of the equalizing hose 92 are equalized. The other end of the pressure hose connection port and the neutralizer 44 are connected to each other, and the expansion chamber 43e and the upper part inside the neutralizer 44 communicate with each other. As a result, the pressure in the exhaust silencer 43 and the inside of the neutralizer 44 become equal, and the drain flows down the drain hose 91 without flowing backward.

An intake air inlet 101 is formed at an upper portion of a portion of the cover member 81 constituting the air cleaner 31.
The intake inlet pipe 101 is connected to the intake inlet 101. Further, openings 102 and 10 for maintenance and the like are provided at locations corresponding to the air cleaner element 93 and the oil separator 35 in the cover member 81.
3 are formed. The cap members 82 are detachably attached to the front side of the cover member 81 with bolts or the like, so that the openings 102 and 103 are closed. An outlet 121 that guides dew water in fresh air to the outside is arranged below the air cleaner 31.

A window hole 105 is provided at a position corresponding to the preheating chamber 79 in the upper surface 2a of the frame 2 of the power storage case 1, and a lower opening of the preheating chamber 79 is formed in the window hole 105. When the parts match, heat in the engine room 5 is introduced into the residual heat introduction chamber 79. Furthermore, the intake pipe 33 and the blow-by gas passage 3
A pipe such as 4 is passed through the window hole 105. The window hole 105 is provided with a waterproof wall 106 composed of an edge frame projecting upward. Even when rainwater enters the gap between the frame 2 and the auxiliary case, the waterproof wall 106 blocks the waterproof wall 106 so that the inside of the engine room 5 can be prevented. So that it does not flow into

The oil separator 35 has a built-in element made of non-woven fabric (not shown) for adsorbing and separating mist oil in blow-by gas. As the oil separator 35 is heated by the residual heat, the viscosity of the oil to be separated is kept low and drips down due to gravity, and flows down the blow-by gas introduction part 120 and the wall of the hose-shaped blow-by gas passage 34 as a wall film flow. I do. Further, since the separated oil is preheated at an appropriate temperature in the power unit storage case 1, it is not excessively heated and carbonized to form a gum.

In the portion between the air cleaner 31 and the exhaust silencer 43, a groove 122 is provided in the casing 80 and the cover member 81 to block heat with a layer of air, which lowers the efficiency of charging fresh air. I try not to.

According to the structure of this embodiment as described above,
A power section including the compressor 21 and the engine 22 is housed in the power section storage case 1 and connected to components and pipes of the engine such as a fuel system, an intake / exhaust system, a cooling system, a lubrication system, and the compressor 21. The components and piping of the refrigerant lubrication system are rationally arranged in the power unit storage case 1 and the auxiliary case 10 installed above the power unit storage case 1.

In particular, since the air cleaner 31, the oil separator 35, and the exhaust silencer 43 are disposed in the auxiliary case 10 outside the power storage case 1, the power storage case 1 can be downsized. . When the power unit storage case 1 is miniaturized in this way, the rigidity is increased, which is advantageous in suppressing vibration and reducing vibration noise. As in the present embodiment, the frame 2 of the power unit storage case 1 is formed by casting. (Aluminum die-casting) is more advantageous due to improved rigidity.

Further, the side wall portion 83 of the casing 80 constituting the air cleaner 31 and the like also serves as a part of the fan shroud 13 provided in the auxiliary case 10, so that the side of the fan shroud 13 which has conventionally been a dead space is provided. Since the air cleaner 31 and the like are disposed in the other space, the air cleaner 31 and the like do not take an extra place outside the power storage case 1 and the entire outdoor unit is made compact.

The air cleaner 31 is arranged outside the power storage case 1 so that the engine room 5
Since the intake air temperature is lower than in the case where the air cleaner 31 is disposed inside, the amount of intake air is increased, which is advantageous in terms of engine performance.

Further, as described above, the air cleaner 31,
By arranging the oil separator 35 and the exhaust silencer 43 in the auxiliary case 10, maintenance of the air cleaner 31 and the oil separator 35 is facilitated, and connection pipes to the outside of the outdoor unit, that is, from the intake port to the air cleaner 31 are provided. Intake pipe 32
And the pipe from the exhaust silencer 43 to the exhaust port can be shortened. Further, the engine 22 is placed horizontally so that the head portion 22b provided with the intake / discharge passage is on the right side, and the air cleaner 31 for the intake system and the exhaust silencer 43 for the exhaust system are arranged on the right side which is the same side of the fan shroud 13. The intake pipe 3 between the engine 22
3. There is also an advantage that the exhaust pipe 41 can be shortened.

The compressor 21 is disposed on the left side of the engine 22 in the horizontal direction, while the fan shroud 13
The oil separator 63 and the accumulator 64 of the refrigerant piping system are disposed on the left side of the compressor 21. The four-way valve 62 and the packed valve 6 are disposed in the small chamber 200 on the left side of the compressor 21.
5, 70, an electronic expansion valve 72, a cooling water pump 51, a linear three-way valve 55, and the like.
Inlet and outlet of the refrigerant of the double heat exchanger 57 disposed above the
The inlet and outlet of the cooling water are both arranged on the left side, and the inlet and outlet of the refrigerant of the outdoor heat exchanger 15 arranged behind the fan shroud 13 and the inlet and outlet of the cooling water of the radiator 56 are also arranged on the left side. Thereby, the length of the refrigerant pipe and the length of the cooling water pipe can be shortened.

The auxiliary case 10 can be made compact by effectively utilizing the spaces on both sides, the upper part, and the rear part of the fan shroud 13. Since the inside of the small chamber 200 is exposed when the side cover 201 surrounding the small chamber 200 is removed, the four-way valve 62, the packed valve 6
5, 70, the electronic expansion valve 72, the cooling water pump 51, the three-way valve 55, etc., are easy to assemble and maintain.

In the auxiliary case 10, the main body 11, the outdoor heat exchanger 15, the stay 135 and the stay 14b are fixed to the upper part of the frame 2 integrally formed with the aluminum die casting by bolts, and the main body 11 and the outdoor heat exchanger are fixed. 15, the main body 11 and the stay 14b, and the main structure formed by fixing the outdoor heat exchanger 15 and the stay 135 with bolts respectively, a ceiling cover 132, a rear upper cover 136, a square cover 137, an electrical box 138, The right side cover 131 and the front cover 130 are assembled and formed. In addition,
The accumulator 64, the oil separator 63 and the double tube heat exchanger 57 are attached to the stay 135 before the covers are assembled.
Is assembled. With the above configuration, the electrical box with lid 1
33 also serves as the left side cover, the number of parts is reduced, and the ceiling cover 132, the rear upper cover 1
36, corner cover 137, electrical box 138, right side cover 1
It is possible to operate as a part of the heat pump device in a state where the front cover 31 and the front cover 130 are removed, and the inspection work during the operation becomes easy.

In the above embodiment, the air cleaner 3
1. Although the three components of the oil separator 35 and the exhaust silencer 43 are disposed in the auxiliary case 10, even if both or any one of the oil separator 35 and the exhaust silencer 43 is disposed in the engine room, As compared with the case where the air cleaner 31 is disposed in the engine room, at least the air cleaner 31 is disposed in the auxiliary case 10 so that the power unit storage case 1 is downsized, the entire outdoor unit is downsized, and the intake air temperature is reduced. And the engine performance is improved.

[0056]

According to the present invention, the power unit storage case is
In an outdoor unit having an auxiliary case equipped with a blower fan, an air cleaner provided in an intake system of an engine is arranged around a fan shroud of the auxiliary case, and a side wall of the air cleaner also serves as a part of the fan shroud. As a result, the power storage case can be reduced in size, and the air cleaner can be disposed in the auxiliary case by using the space on the side of the fan shroud, which was previously dead space. The entire machine unit can be made compact. In addition, since the rise in intake air temperature can be suppressed to increase the intake air density, it is also advantageous in terms of engine performance,
Maintainability can also be improved.

In addition to the above configuration, an oil separator is arranged below the air cleaner around the fan shroud of the auxiliary case, and a residual heat introduction chamber communicating with the power storage case is formed below the air separator. If the power unit storage case is made smaller and the overall outdoor unit is made more compact,
In addition, the oil separator can be appropriately warmed to prevent oil deterioration.

Further, if an exhaust silencer is arranged above the air cleaner around the fan shroud of the auxiliary case, and the side wall of the exhaust silencer also serves as a part of the fan shroud, the outdoor unit unit can be improved. Effects such as compactness can be further enhanced.

[Brief description of the drawings]

FIG. 1 is a front view of an outdoor unit of an air conditioner according to an embodiment of the present invention.

FIG. 2 is a side view of the outdoor unit.

FIG. 3 is an explanatory diagram showing an internal configuration of the outdoor unit.

FIG. 4 is an exploded perspective view of main parts of a power unit storage case and an auxiliary case.

FIG. 5 is a front view showing a portion where an air cleaner or the like is provided in the auxiliary case with a cover member or the like removed.

6 is a cross-sectional view taken along line AA of FIG. 5 with a cover member and the like removed.

FIG. 7 is a side view of a cover member and a cap member.

FIG. 8 is a sectional view of a power unit storage case.

FIG. 9 is a schematic horizontal sectional view of the entire auxiliary case.

FIG. 10 is a sectional view taken along line BB of FIG. 9;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Power part storage case 2 Frame 4 Engine room 10 Auxiliary case 12 Fan arrangement cavity 13 Fan shroud 14 Fan 15 Outdoor heat exchanger 21 Compressor 22 Engine 31 Air cleaner 35 Oil separator 43 Exhaust silencer 79 Residual heat introduction chamber 80 Casing 81 Cover member 82 Cap member 83 Side wall part 105 Window hole

Claims (3)

[Claims] A power storage case for storing a power unit including a compressor and an engine, and an auxiliary case installed above the power storage case and holding an outdoor heat exchanger and a blower fan for the outdoor heat exchanger. In the auxiliary unit, in an outdoor unit of an engine-driven heat pump device having a fan shroud surrounding a cavity for arranging a fan, an air cleaner provided in an intake system of an engine is provided around the cavity of the auxiliary case. The side wall of the air cleaner is arranged in a circular arc shape along the cavity, so that the side wall also serves as a part of the fan shroud. Outdoor unit. 2. An oil separator for separating oil in blow-by gas guided from the engine to the air cleaner is disposed below the air cleaner around the cavity of the auxiliary case, and a residual heat is provided in a lower part around the oil separator. 2. The outdoor unit of an engine-driven heat pump device according to claim 1, wherein an introduction chamber is formed, and a window hole communicating with the residual heat introduction chamber is provided on an upper surface of the power storage case. 3. An exhaust silencer provided in an exhaust system of an engine is disposed above the air cleaner around the cavity of the auxiliary case, and a side wall of the exhaust silencer is connected to a side wall of the air cleaner. The side wall of the exhaust silencer, in addition to the side wall of the air cleaner, is also formed as a part of the fan shroud by being formed in the shape of a circular arc along the cavity. The outdoor unit of the engine driven heat pump device.