JP6634932B2 - Outdoor units for engine-driven air conditioners - Google Patents

Description

  The present invention provides a gas-liquid separation unit that separates a gas phase and a liquid phase contained in exhaust gas of an engine, and a wastewater purification process that performs a purification process on a liquid phase discharged from the gas-liquid separation unit. And an outdoor unit for an engine-driven air conditioner, comprising:

  Since the condensed water, which is the liquid phase of the exhaust gas of the engine, is acidic, it needs to be separated from the gas phase of the exhaust gas, and then neutralized and discharged in the wastewater purification section. Therefore, conventionally, the separation of the gaseous phase and the liquid phase contained in the exhaust gas of the engine is performed by swirling the exhaust gas in a cylindrical portion, and the separated liquid phase is exhausted containing a neutralizing agent. It was neutralized by the liquid purification processing section and discharged. (For example, refer to Patent Document 1.)

JP 2009-2307 A

  The exhaust gas of the engine may include carbide particles obtained by carbonizing the engine oil as described below. In addition to the air and fuel being supplied to the combustion chamber of the engine, a small amount of engine oil penetrates through the gap between the piston rings, and the infiltrated engine oil burns when the combustion temperature is high. However, when the load on the engine is low and the combustion temperature is low, the engine oil is discharged from the combustion chamber together with the exhaust gas from the combustion chamber as carbonized carbide particles. In a conventional structure in which the exhaust gas of an engine is swirled to separate a gas phase and a liquid phase contained in the exhaust gas of the engine, the carbide particles of the engine oil are initially dispersed in the gas-liquid separation section. Although the diameter is about 0.1 mm, the carbide particles accumulate or bond with each other while continuing to turn the cylindrical portion, and the particle diameter grows to about 1 to 3 mm and increases. The carbide particles having such an increased particle diameter close the discharge pipe for discharging the liquid phase from the gas-liquid separation section to the waste water purification section, so that the gas phase and the liquid phase contained in the exhaust gas of the engine are closed. There is a problem in discharging the liquid phase from the gas-liquid separation unit that separates the liquid phase into the wastewater purification processing unit.

  Therefore, the present invention provides an outdoor unit of an engine-driven air conditioner which can discharge carbide particles contained in exhaust gas from a cylindrical portion of a gas-liquid separation section before the particle diameter increases without continuing to swirl the cylindrical portion. The purpose is to:

In order to solve the above problem, an outdoor unit of an engine-driven air conditioner according to the present invention includes a gas-liquid separation unit that separates a gas phase and a liquid phase contained in exhaust gas of an engine; And an exhaust passage for supplying exhaust gas discharged from the engine to the gas-liquid separation unit, and performing a purification process on a liquid phase discharged from the gas-liquid separation unit. And a gas-liquid separation unit, wherein the gas-liquid separation unit is vertically erected and has a cylindrical portion having an open upper end, a bottom plate for closing a lower surface of the cylindrical portion, and the inside of the cylindrical portion. provided near vicinity of the inner circumferential surface of the near neighbor or one the cylindrical portion of the bottom plate, exhaust gas injection for swirling and jetting the exhaust gas in the tangential direction of the inner peripheral surface of the cylindrical portion is connected to the exhaust passage An outlet and the exhaust gas ejection in the exhaust gas turning direction A drain outlet opening to the bottom plate near the upstream side of the drain outlet and connected to the drain purification section, at least a portion of which is located downstream of the drain outlet in the swirling direction, and the contact with the exhaust gas swirl is ejected from the outlet, and a guide member for introducing the carbide particles contained in the exhaust gas to the liquid discharge outlet, Bei example, said guide member, between said bottom plate The point is to have a first gap .

  According to the outdoor unit of the engine-driven air conditioner according to the present invention, at least a part of the outdoor unit is located on the downstream side in the swirling direction from the drain outlet, and contacts the swirling exhaust gas ejected from the exhaust gas outlet. A guide member for introducing carbide particles contained in the exhaust gas into the drainage outlet, so that the exhaust gas and the guide member swirling the cylindrical portion allow the carbide particles contained in the exhaust gas to continue swirling the cylindrical portion. Before the particle diameter increases, the liquid can be introduced from the cylindrical portion to the drain outlet.

It is the schematic which shows the outdoor unit of the engine drive type air conditioner in one Embodiment of this invention. FIG. 2 is a sectional view taken along line AA of FIG. 1. FIG. 3 is a sectional view taken along line BB of FIG. 2. It is a figure like FIG. 2 which shows the 2nd Example of the guide member in the outdoor unit of the engine drive type air conditioner of this invention.

  One embodiment of an outdoor unit of an engine-driven air conditioner according to the present invention will be described with reference to FIG.

  The engine-driven air conditioner 10 includes an outdoor unit 11 that regulates a refrigerant that performs air conditioning indoors, an indoor unit 12 that performs air conditioning indoors, and a refrigerant pipe 13 that connects the outdoor unit 11 and the indoor unit 12. I have.

  The outdoor unit 11 is arranged outdoors. The outdoor unit 11 purifies the engine 14, a gas-liquid separation unit 15 for separating a gas phase and a liquid phase contained in exhaust gas of the engine 14, and a liquid phase discharged from the gas-liquid separation unit 15. A waste water purification processing unit 16 for performing the processing, a compressor 17 driven by the engine 14 to suck and compress a gaseous refrigerant with the driving, and an outdoor heat exchanger 18 for exchanging heat of the refrigerant for air conditioning. And a four-way valve 19 that switches the route of the refrigerant pipe 13 between a cooling operation and a heating operation of the engine-driven air conditioner 10.

  The indoor unit 12 is disposed indoors, and includes an indoor heat exchanger 20 that exchanges heat between refrigerant and indoor air for air conditioning, and a throttle mechanism 21 that expands the refrigerant.

  A refrigeration cycle is configured by connecting the compressor 17 driven by the engine 14, the four-way valve 19, the outdoor heat exchanger 18, the throttle mechanism 21, and the indoor heat exchanger 20 with the refrigerant pipe 13. .

  When the compressor 17 is driven by the engine 14 during the cooling operation of the engine-driven air conditioner 10, the gaseous refrigerant discharged from the compressor 17 becomes a four-way valve as shown by a solid line arrow in the refrigerant pipe 13. The air enters the outdoor heat exchanger 18 via 19, where the heat is radiated to the outside air blown by the outdoor fan 22 and condensed and liquefied.

  The liquid refrigerant adiabatically expands in the process of flowing through the throttle mechanism 21 and then enters the indoor heat exchanger 20 where it evaporates and vaporizes by cooling the indoor air blown by the indoor fan 23. Thereafter, the gaseous refrigerant returns to the compressor 17 via the four-way valve 19.

  During the heating operation of the engine-driven air conditioner 10, the four-way valve 19 is switched in the opposite direction to the above, and the refrigerant discharged from the compressor 17 receives the four-way valve 19 and the indoor heat as indicated by the broken arrows in the refrigerant pipe 13. The flow returns to the compressor 17 through the exchanger 20, the throttle mechanism 21, the outdoor heat exchanger 18, and the four-way valve 19 in this order.

  The cooling water that has been heated by cooling the engine 14 enters the radiator 24, where it cools by radiating heat to the outside air blown by the outdoor fan 22, and is then energized by a cooling water circulation pump 25 to exchange heat with exhaust gas. After the heat exchange with the exhaust gas outside the heat transfer tube 27 in the process of flowing through the heat transfer tube 27 of the vessel 26, the process returns to the engine 14.

  Exhaust gas discharged from the engine 14 is supplied to a gas-liquid separation unit 15 that separates a gas phase and a liquid phase contained in the exhaust gas through an exhaust passage 28. The exhaust gas heat exchanger 26 described above is interposed in the exhaust passage 28.

The gas-liquid separator 15 has a cylindrical portion 29 that is vertically erected and has an opening 29 b at the upper end, and a bottom plate 30 that closes the lower surface of the cylindrical portion 29. As shown in FIG. 2, the cylindrical portion 29 in the vicinity of the inner peripheral surface 29a in the vicinity of a and the cylindrical portion 29 of the bottom plate 30, an exhaust gas port 31 it is provided. The exhaust gas outlet 31 is connected to the exhaust passage 28 and ejects the exhaust gas in the tangential direction of the inner peripheral surface 29 a of the cylindrical portion 29 to turn. As shown in FIGS. 2 and 3, the gas-liquid separation section 15 has a drainage opening in the bottom plate 30 near the upstream side of the exhaust gas outlet 31 in the exhaust gas turning direction and connected to the drainage purification processing section 16. An outlet 32 is provided. The turning direction of the exhaust gas in the cylindrical portion 29 of the gas-liquid separation section 15 is indicated by an arc-shaped white arrow in FIG.

  Exhaust gas ejected from the exhaust gas ejection port 31 into the cylindrical portion 29 is ejected in a tangential direction of the inner peripheral surface 29a of the cylindrical portion 29, and swirls the inner peripheral surface 29a in the direction of the aforementioned arc-shaped white arrow. As a result, the exhaust gas is separated into a gas phase and a liquid phase by centrifugal force using the specific gravity difference between the gas phase and the liquid phase. The separated gas phase of the exhaust gas is discharged to the outside of the outdoor unit 11 from the opening 29b at the upper end of the cylindrical portion 29.

  The liquid phase (acid) of the exhaust gas separated in the cylindrical portion 29 is discharged from a drain outlet 32 to a discharge pipe 33. The liquid phase of the exhaust gas discharged to the discharge pipe 33 is guided to the drain purification section 16 interposed in the discharge pipe 33, where it is contacted with a neutralizing agent such as calcium carbonate and neutralized. After that, the air is discharged from the discharge pipe 33 to the outside of the outdoor unit 11.

  Next, a description will be given of a first embodiment of the guide member 34 for introducing the carbide particles 35 contained in the exhaust gas from the cylindrical portion 29 of the gas-liquid separation section 15 to the drainage outlet 32.

  As shown in FIGS. 2 and 3, at least a part of the gas-liquid separator 15 is located downstream of the drain outlet 32 in the exhaust gas swirling direction, and is spouted from the exhaust gas outlet 31 to swirl. And a guide member 34 that comes into contact with the exhaust gas to be introduced and introduces the carbide particles 35 contained in the exhaust gas into the drain outlet 32. As shown in FIG. 3, the guide member 34 has at least a lower rear end 34a located downstream of the drainage outlet 32 in the turning direction, a front end 34b inclined upward toward the upstream side in the turning direction, and an intermediate portion. 34c has an inclined surface 34d which comes into contact with the exhaust gas which is ejected from the exhaust gas ejection port 31 and turns. As shown in FIG. 3, the guide member 34 has a first gap 36 between the guide member 34 and the bottom plate 30, and the mounting portion 37 provided on the guide member 34 is fixed to the cylindrical portion 29 by, for example, welding. By providing the first gap 36, even when the guide member 34 is provided in the cylindrical portion 29, the exhaust gas that swirls the cylindrical portion 29 in the direction of the above-mentioned arcuate white arrow can pass through the first gap 36. As a result, the flow of the turn is less likely to be disturbed.

  When the exhaust gas introduced from the exhaust gas outlet 31 into the cylindrical portion 29 contains carbide particles 35 obtained by carbonizing engine oil, the exhaust gas turning in the cylindrical portion 29 and the inclined surface 34 d of the guide member 34 By the guide action, the exhaust gas swirling the cylindrical portion 29 acts to push the carbide particles 35 toward the drain outlet 32, and the carbide particles 35 are introduced into the drain outlet 32. Therefore, due to the exhaust gas swirling in the cylindrical portion 29 and the guiding action of the inclined surface 34 d of the guide member 34, the carbide particles 35 contained in the exhaust gas do not continue to swirl in the cylindrical portion 29 and the exhaust gas outlet 31 The liquid is discharged from the cylindrical portion 29 to the drain outlet 32 immediately before the particle diameter increases from about 0.1 mm when the particles are ejected from the cylindrical portion 29 to the liquid discharge port 32.

  The carbide particles 35 introduced into the drainage outlet 32 are discharged to the drainage purification section 16 through the discharge line 33. Since the particle size of the carbide particles 35 does not increase as described above, the carbide particles 35 are included in the exhaust gas by not closing the drain outlet 32 and the drain conduit 33 which are the connection portions with the drain purification section 16. The liquid phase can be discharged to the drain purification section 16 from the cylindrical portion 29 that separates the gas phase and the liquid phase from each other. The carbide particles 35 guided to the wastewater purification processing unit 16 are removed from the wastewater purification processing unit 16 when, for example, the neutralizing agent in the wastewater purification processing unit 16 is replaced.

  Next, a description will be given of a second embodiment of the guide member 34 for introducing the carbide particles 35 contained in the exhaust gas from the cylindrical portion 29 of the gas-liquid separation section 15 to the drainage outlet 32.

The guide member 34 of the first embodiment has a first gap 36 between the guide member 34 and the bottom plate 30 as shown in FIG. On the other hand, the guide member 34 of the second embodiment has a second gap 38 between itself and the inner peripheral surface 29a of the cylindrical portion 29, as shown in FIG. The only difference is that the mounting portion 37 is fixed to the bottom plate 30 by, for example, welding. By providing the second gap 38, even if the guide member 34 is provided in the cylindrical portion 29, the exhaust gas swirling the cylindrical portion 29 in the direction of the aforementioned arcuate white arrow, to pass through the second gap 38 Turbulence is less likely to occur in the turning flow.

  Therefore, similarly to the guide member 34 of the first embodiment, the guide particles 34 of the second embodiment do not cause the carbide particles 35 contained in the exhaust gas to continue rotating inside the cylindrical portion 29 as described above. Due to the exhaust gas swirling the cylindrical portion 29 and the guiding action of the inclined surface 34 d of the guide member 34, the particle size increases from about 0.1 mm when ejected from the exhaust gas outlet 31 into the cylindrical portion 29. Previously, it is quickly introduced from the cylindrical portion 29 to the drainage outlet 32.

As described above, according to the outdoor unit 11 of the engine-driven air conditioner 10 according to the present embodiment, the gas-liquid separation unit 15 that separates the gas phase and the liquid phase contained in the exhaust gas of the engine 14 includes: Connecting the engine 14 and the gas-liquid separation unit 15 to each other, an exhaust passage 28 for supplying exhaust gas discharged from the engine 14 to the gas-liquid separation unit 15, and a liquid phase discharged from the gas-liquid separation unit 15. A gas-liquid separation unit 15, which is vertically erected and has an open upper end, and a bottom plate that closes the lower surface of the cylindrical unit 29. 30, provided in the cylindrical portion 29 near the bottom plate 30 and near the inner peripheral surface 29 a of the cylindrical portion 29 , and connected to the exhaust passage 28 to exhaust gas in a tangential direction of the inner peripheral surface 29 a of the cylindrical portion 29. An exhaust gas outlet 31 for ejecting and turning the exhaust gas; A drain outlet 32 opened in the bottom plate 30 near the upstream side of the exhaust gas outlet 31 in the swirl direction and connected to the drain purification unit 16, and at least a part downstream of the drain outlet 32 in the swirl direction. And a guide member 34 that abuts on the swirling exhaust gas ejected from the exhaust gas outlet 31 and introduces the carbide particles 35 contained in the exhaust gas into the drainage outlet 32. Thus, the exhaust gas swirling the cylindrical portion 29 and the guide member 34 cause the carbide particles 35 contained in the exhaust gas to drain from the cylindrical portion 29 before the particle size increases without continuing to swirl the cylindrical portion 29. It can be introduced into the outlet 32.

  As described above, according to the outdoor unit 11 of the engine-driven air conditioner 10 according to the present embodiment, at least the lower rear end 34a of the guide member 34 is located downstream of the drainage outlet 32 in the turning direction. The front end 34b is inclined upward toward the upstream side in the turning direction, and the intermediate portion 34c is in contact with the swirling exhaust gas ejected from the exhaust gas outlet 31. As a result, the exhaust gas swirling through the cylindrical portion 29 is guided by the inclination of the guide member 34, so that the exhaust gas acts to push the carbide particles 35 in the cylindrical portion 29 toward the drainage outlet 32. Therefore, it is easy to introduce the carbide particles 35 from the cylindrical portion 29 to the drain outlet 32.

As described above, according to the outdoor unit 11 of the engine-driven air conditioner 10 according to the present embodiment, the guide member 34 has the first gap 36 between the guide member 34 and the bottom plate 30. Thus, even if the guide member 34 is provided in the cylindrical portion 29, the presence of the first gap 36, the exhaust gas swirling the cylindrical portion 29, it is possible to pass through the first gap 36, the flow of the turning Disturbance is less likely to occur.

As described above, according to the outdoor unit 11 of the engine-driven air conditioner 10 according to the present embodiment, the guide member 34 has the second gap 38 between the guide member 34 and the inner peripheral surface 29 a of the cylindrical portion 29. Thus, even if the guide member 34 is provided in the cylindrical portion 29, the presence of the second gap 38, the exhaust gas swirling the cylindrical portion 29, it is possible to pass through the second gap 38, the flow of the turning Disturbance is less likely to occur.

  It should be noted that when there are a plurality of embodiments, it is apparent that the features of each embodiment can be appropriately combined unless otherwise specified.

DESCRIPTION OF SYMBOLS 10 ... Engine drive type air conditioner, 11 ... Outdoor unit, 14 ... Engine, 15 ... Gas-liquid separation part, 16 ... Drainage purification processing part, 28 ... Exhaust passage, 29 ... Cylindrical part, 29a ... Inner peripheral surface, 30 ... bottom plate, 31 ... exhaust gas outlet, 32 ... drainage outlet, 34 ... guide member, 34a ... lower rear end, 34b ... front end, 34c ... middle part, 35 ... carbide particles, 36 ... first gap, 38 ... Second gap

Claims (3)

A gas-liquid separator for separating a gas phase and a liquid phase contained in the exhaust gas of the engine,
An exhaust passage connecting the engine side and the gas-liquid separator, and supplying exhaust gas discharged from the engine to the gas-liquid separator;
A wastewater purification processing unit that performs a purification process on the liquid phase discharged from the gas-liquid separation unit,
The gas-liquid separator includes a cylindrical portion which the upper end is erected vertically to the opening, a bottom plate for closing the lower surface of the cylindrical portion, the inner peripheral surface of the near neighbor or One said cylindrical portion of said bottom plate within the cylindrical portion provided near neighbor, the exhaust gas ejection port that is connected to an exhaust passage to pivot by ejecting the exhaust gas in the tangential direction of the inner peripheral surface of the cylindrical portion, the exhaust gas-injection in the turning direction of the exhaust gas A drain outlet opening to the bottom plate near the upstream side of the outlet and connected to the drain purification section, at least a part of which is located downstream of the drain outlet in the swirling direction; A guide member that comes into contact with the exhaust gas that is ejected from the ejection port and turns, and introduces carbide particles included in the exhaust gas into the drainage outlet, and the guide member is provided between the bottom plate and the guide member. engine-driven air conditioner having a first gap The outdoor unit of the device. One end, which is the downstream end of the guide member in the swirling direction, is located downstream of the drainage outlet in the swirling direction,
The guide member is inclined upward from the one end toward the other end, which is the end on the upstream side in the swirling direction, and an intermediate portion is applied to the exhaust gas that is ejected from the exhaust gas outlet and turns. The outdoor unit of the engine-driven air conditioner according to claim 1, which is in contact with the outdoor unit. The guide member, the outdoor unit of the engine driving type air conditioner according to claim 1 or 2 having a second gap between the inner peripheral surface of the cylindrical portion.

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