JPH06330762A - Electrical equipment disposing structure in engine driven heat pump apparatus - Google Patents

Abstract

PURPOSE:To improve the life of electrical equipment by preventing the electric equipment from being heated by an engine even in the case that the unit composed of the engine, electric equipment, etc., is made compact. CONSTITUTION:An engine 19, a compressor 23 for refrigerant driven by the engine 9, electric equipment 25 for controlling these apparatus and a casing 2 for receiving these apparatus are provided. An intake path of the engine 19 is formed in a right chamber 10 of the casing 2. The electrical equipment 25 is disposed in the right chamber 10.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electric component arranging structure for arranging an electric component in a place where it is hard to heat in an engine driven heat pump device.

[0002]

2. Description of the Related Art Engine driven heat pump systems are usually
It has an outdoor unit, this unit is an engine,
A refrigerant compressor driven by the engine, electric components for controlling these devices, and a casing for housing these components are provided. An intake passage of the engine is formed in the casing.

When the compressor is driven by the engine, the refrigerant is compressed into high-temperature and high-pressure gas, and the heat of this gas is used to heat the interior of the room.

[0004]

By the way, if the respective components housed in the casing are brought close to each other in an attempt to make the unit as compact as possible, the respective components will be easily heated by the engine.

However, since the electrical components generally have low heat resistance, if the above-mentioned configuration is adopted, the electrical components may receive heat from the engine and their life may be significantly shortened.

[0006]

SUMMARY OF THE INVENTION The present invention has been made by paying attention to the above circumstances. Even when a unit including an engine and electrical components is made compact, the electrical components are prevented from being heated by the engine. The object is to improve the life of the above electrical equipment.

[0007]

The features of the present invention for achieving the above-mentioned object are that an engine, a compressor for a refrigerant driven by the engine, electric components for controlling these devices, and these In the engine-driven heat pump device including a casing for accommodating and forming the intake passage of the engine in the casing, the electric component is arranged in the intake passage.

[0008]

[Operation] The operation of the above configuration is as follows.

The terms in parentheses below correspond to the terms in the claims.

The engine 19, the refrigerant compressor 23 driven by the engine 19, the electric components 25 for controlling these devices, and the casing 2 for accommodating them are provided in the right chamber (the intake passage of the engine 19). In the engine-driven heat pump device in which the intake passage 10 is formed in the casing 2, the electric component 25 is arranged in the right chamber (intake passage) 10.

Therefore, the electric component 25 is prevented from being cooled by the outside air 17 flowing through the right chamber (intake passage) 10 and being heated by the engine 19.

[0012]

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

(Example 1)

1 and 2 show a first embodiment.

In the drawings, reference numeral 1 is an outdoor unit in an engine-driven heat pump device. The unit 1 has a rectangular casing 2 when viewed from the front, and the casing 2 is installed on the ground 3. The left and right described below means the direction toward the drawing.

The casing 2 is made of aluminum die casting, resin, or sheet metal, and an air exhauster 5 is provided at the center of the casing 2 in a front view. The exhaust fan 5 includes a cylindrical exhaust fan case 6 whose axis extends horizontally in the front-rear direction, and an axial flow rotor 7 provided in the exhaust fan case 6. Further, partition plates 8 and 8 are provided above and below the blower case 6, respectively, and the blower case 6 and the partition plates 8 and 8 are located inside the casing 2 in the left chamber 9 and the right chamber 1.
It is divided into 0s.

An opening for opening the left chamber 9 and the right chamber 10 toward the front side is formed. A left lid 12 and a right lid 13 are provided to open and close each of these openings.
The right lid 13 and the right lid 13 are detachably screwed to the opening edge of the opening by a bolt 11.

An intake port 15 is formed in the upper and lower middle portion of the right side wall 14 of the casing 2. On the other hand, a communication pipe 16 that connects the left chamber 9 and the right chamber 10 to each other is provided on the lower partition plate 8 of the two partition plates 8.

An air cleaner 2 is provided above the right chamber 10.
0 is provided. An engine 19 is supported on the bottom plate of the left chamber 9 via cushioning members 18, 18, and an exhaust silencer 21 and an oil tank 22 are provided in the left chamber 9 above the engine 19. Has been. A compressor 23 is directly connected to the engine 19. In addition, 24 is a refrigerant piping system, 25 is an electrical component, 26 is a first exhaust pipe, and 26a is a second exhaust pipe.

When the engine 19 operates, the blower 5 also operates in conjunction with this. Then, by the intake action of the engine 19 and the action of the exhaust fan 5, the outside air 17 outside the casing 2 is sucked into the right chamber 10 through the intake port 15, and the right chamber 10 and the communication pipe 16 are connected. Is sequentially inhaled into the left ventricle 9.

A part of the outside air 17 drawn into the left chamber 9 is taken into the engine 19 together with the gas fuel as intake air 39 for combustion, and its exhaust gas G passes through the first exhaust pipe 26. The sound is silenced by the exhaust silencer 21, and is further discharged to the outside of the casing 2 through the second exhaust pipe 26 a and the exhaust fan 5.

The air in the left chamber 9 is exhausted to the outside of the casing 2 by the exhaust fan 5, so that the inside of the casing 2 is entirely cooled. Further, due to the air exhausted to the outside of the casing 2 by the exhaust fan 5, the exhaust gas G of the engine 19 exhausted through the exhaust fan 5 is diffused to the outside of the casing 2 and exhausted.

Then, by the operation of the engine 19,
The compressor 23 is driven, whereby the refrigerant is compressed into high-temperature and high-pressure gas, and the heat of this gas is used for heating the interior of the room.

The right chamber 10 will be described in detail. The right chamber 10 is an intake passage for the exhaust fan 5 and an intake passage for the engine 19.

A first guide plate 27 is provided facing the inner surface of the upper portion of the right side wall 14 at a slight distance. The lower end of the first guide plate 27 is integrally connected to the right side wall 14 near the lower portion of the intake port 15. On the other hand, the upper end of the first guide plate 27 is slightly apart from the ceiling plate 28 of the casing 2, and the right side wall 14 and the first guide plate 27 are the same.
A first passage 29 is formed between and.

Secondly facing the ceiling plate 28 at a slight distance
A guide plate 31 is provided. This second guide plate 31
The right end of the first guide plate 27 is integrally connected at a position slightly lower than the upper end of the first guide plate 27. On the other hand, the left end of the second guide plate 31 is slightly bent from the upper partition plate 8 and is bent upward to form a water flow prevention piece 31a, and the second guide plate 31 has a second end between the ceiling plate 28 and the second guide plate 31. Passage 32
Are formed.

The air cleaner 20 is a frame 34.
And the element 35 attached to the frame 34
The frame 34 is detachably engaged with the ceiling plate 28 and the second guide plate 31. in this case,
The air cleaner 20 diagonally crosses the second passage 32 in a downward-sloping manner to the left, whereby a sufficient filtration area is secured in the element 35.

A third guide plate 33 is provided on the lower surface of the second guide plate 31 so as to face it at a slight distance. This third
The right end of the guide plate 33 is integrally connected to the first guide plate 27. On the other hand, the same as above, the left end of the third guide plate 33 is located to the right of the left end of the first guide plate 27 and is bent upward to form a lid portion 33a. The space between the third guide plate 33 and the left end is substantially closed.

A fourth guide plate 36 is provided on the lower surface of the third guide plate 33 so as to face it at a slight distance. This 4th
The left end of the guide plate 36 is integrally connected to the blower case 6. On the other hand, the same as above, the right end of the fourth guide plate 36 is slightly apart from the first guide plate 27, and a third passage 37 is formed between the third guide plate 33 and the fourth guide plate 36.

The electric component 25 includes a control board 38 for controlling a microcomputer and the like, and a power board 39 for supplying electric power to a transformer and a relay, and is attached to and detached from the lower surface of each of the boards 38 and 39. And a plurality of electric component bodies 40 that can be freely attached.

The control board 38 is detachably engaged with the lower surface of the second guide plate 31, and the control board 38 and the electrical component body 40 attached to the lower surface of the control board 38 are provided with the second guide. Board 31 and third
Surrounded by the guide plate 33, it is protected from being affected by the intake pulsation of the engine 19.

The power board 39 is detachably engaged with the opening edge of the opening 33b so as to close the opening 33b formed in the third guide plate 33. The power board 39 and the electrical component body 40 attached to the lower surface of the power board 39 are apt to generate heat due to their functions.
These are exposed in the third passage 37 and are sufficiently cooled by the outside air 17 passing therethrough.

A fourth passage 41 extends from the third passage 37 to the communication pipe 16. Then, the first to the above
The fourth passages 29, 32, 37, 41 constitute the right chamber 10 which is an intake passage. In addition, the first to fourth passages 2 described above
9, 32, 37, 41 are the respective guide plates 27, 31, 3
Since it is partitioned by 3, 36, it also works as an intake silencer.

When the air blower 5 and the engine 19 are operated, the outside air 17 flows into the intake port 1 as shown by the arrow in FIG.
5, the first passage 29, the second passage 32, the third passage 37, and the fourth passage 41 to reach the communication pipe 16.

In the above case, since the first passage 29 faces upward, rainwater is prevented from entering the first passage 29.
In addition, the outside air 17 is discharged from the air cleaner 20 in the second passage 32.
It is filtered by passing through. Furthermore, the third passage 37
In, the outside air 17 cools the electric component 25.

The first portion is formed so as to cover the downstream end of the communication pipe 16.
A flame-extinguishing wire net 43 is provided, and a second flame-extinguishing wire net 44 is provided at the upstream end of the fourth passage 41. The first flame-extinguishing wire net 43 and the second flame-extinguishing wire net 44 reliably prevent the flame from heading toward the electric component 25 when the engine 19 backfires.

A drain hole 46 is formed in the first guide plate 27 at the connecting portion between the first guide plate 27 and the second guide plate 31. When the water drop 47 such as rain reaches the second guide plate 31 together with the outside air 17, the drain hole 46 drains the water drop 47 to the first passage 29 side. Further, the water droplet 47 passes through the intake port 15 from the first passage 29,
It is drained to the outside of the casing 2.

(Example 2)

FIG. 3 shows the second embodiment.

According to this, the air cleaner 20 has the second
It crosses the passage 32 diagonally to the left.

On the other hand, the upper and lower middle portions of the fourth passage 41 are vertically divided by a partition plate 48, and the partition plate 48 is integrally formed with the exhaust fan case 6 and the right side wall 14.

The upstream end of the communication pipe 16 is extended, and the extended end penetrates the partition plate 48 and is attached to the partition plate 48. Further, the same as the above partition plate 48, the socket 4
9 is attached, and an electric wire 50 connecting the engine 19 side and the electric component 25 passes through the socket 49 and penetrates the partition plate 48.

The communicating tube 16 may be constructed of a flexible tube in its entire middle part.

Since other structures and operations are the same as those of the first embodiment, common reference numerals are given to the drawings and the description thereof will be omitted.

[0045]

According to the present invention, the engine, the compressor for the refrigerant driven by the engine, the electric components for controlling these devices, and the casing for accommodating them are provided, and the intake passage of the engine is provided with the casing. In the engine-driven heat pump device formed inside, the electric components are arranged in the intake passage.

Therefore, the electric component is cooled by the outside air flowing through the intake passage.

Therefore, even if the components housed in the casing are brought close to each other in an attempt to make the unit composed of the engine and the electrical components compact, the electrical components are prevented from being heated by the engine, and The life of electrical components is improved.

[Brief description of drawings]

FIG. 1 is an entire front partial cross-sectional view of the first embodiment.

2 is a partially enlarged cross-sectional view of FIG. 1 in Embodiment 1. FIG.

FIG. 3 is a diagram corresponding to FIG. 2 in the second embodiment.

[Explanation of symbols]

 1 Outdoor unit 2 Casing 5 Exhaust fan 10 Right chamber (intake passage) 17 Outside air 19 Engine 23 Compressor 25 Electrical equipment

Claims (1)

[Claims] 1. An engine drive comprising an engine, a refrigerant compressor driven by the engine, electrical components for controlling these devices, and a casing for housing these components, wherein an intake passage of the engine is formed in the casing. A heat pump device of the engine type, wherein the electric components are arranged in the intake passage, and the electric components are arranged in the engine-driven heat pump device.