JP3426657B2 - Drain water treatment equipment - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a drain device separated from exhaust gas of an engine in an engine-using device fixedly mounted on a base such as an outdoor unit of an air conditioner. The present invention relates to a drain water treatment device for discharging water to the outside after neutralizing the water. 2. Description of the Related Art In an outdoor unit of an air conditioner having a gas engine driven heat pump, when heat is recovered from exhaust gas by an exhaust heat exchanger, when the temperature of the exhaust gas decreases due to the heat recovery, an acidic component is recovered. Is drained from the exhaust gas.However, if the drain water having the acid content remains in the device, the oxidizing action thereof will shorten the life of the portion, and the drain water is immediately discharged out of the device. ing. However, since the apparatus is fixedly installed on a base such as concrete, drain water is always discharged to the same place. If discharged as it is, it will have an adverse effect on the installation base at the discharge location. [0004] Therefore, a drain water treatment device in which a neutralizing agent composed of calcite, dolomite, limestone, magnesium, natural coral or the like is filled in a container is installed below the device, and drain water is introduced therein. Heretofore, it has been conventionally performed to neutralize with a neutralizing agent while staying in a container, and to discharge the drain water after neutralization from the apparatus to the outside. [0005] However, in the above-mentioned drain water treatment apparatus, mayonnaise-like precipitates called "emulsions" may be generated from the drain water in the container. However, since this emulsion has a specific gravity close to that of water (has a high water content) and has tackiness, it may adhere to the surface of the neutralizing agent and inhibit the activity of the neutralizing agent. An object of the present invention is to solve the above problems of the conventional drain water treatment apparatus,
More specifically, an object of the present invention is to prevent the generation of an emulsion by preventing an agitating action of drain water in a container. [0007] In order to solve the above-mentioned problems and to achieve the object, the present invention is to allow drain water separated from exhaust gas of an engine to flow into an enclosure through an inlet. In a drain water treatment device that neutralizes drain water remaining in a container with a neutralizing agent and discharges the neutralized drain water from the outlet to the outside of the container, one drain port
The extent provided two inlet, with is positioned above the retention level of the drain water container within the opening of the inlet, in the vicinity of the container in the opening portion of the inlet, which flow into the drain water does not collide And a space in which a neutralizing agent does not enter is formed near the opening inside the container at the outlet. [0008] According to the above configuration, since the space is formed near the opening inside the container at the outlet, the water is dissolved and reduced to neutralize the drain water. Since the fragments of the wetting agent do not enter the outlet, clogging of the outlet by the neutralizing agent does not occur. [0009] Thus, the retained water level of the drain water in the container does not rise abnormally due to the clogging of the outlet, and the opening in the container at the inflow port is always maintained above the retained water level of the drain water. It is possible to maintain a state in which the drain water staying in the container is not stirred by the drain water flowing from the inflow port. Further, since the space is formed near the opening inside the container at the inflow port, the inflowing drain water may collide with the neutralizing agent or the wall of the container and be stirred itself. Absent. The drain water introduced into the container contains an oil component and has an acidic component, and when this is stirred, a mayonnaise emulsion is formed. In this case, since the agitating action of the drain water in the container is reduced, the generation of the emulsion is prevented. Embodiments of the present invention will be described below with reference to the drawings. FIGS. 1 and 2 schematically show an outdoor unit of an air conditioner having a heat pump driven by a gas engine. A housing 2 of the outdoor unit 1 is fixed on a base 3, , Engine 4, compressors 5, 5, air cleaner 6, heat exchanger 7, oil tank 8, refrigerant unit 9 for storing refrigerant, electrical unit 1
0, an exhaust heat exchanger 11, a drain separator 12, a drain water treatment device 20 and the like are respectively installed. At the upper end of the housing 2, the heat exchange action of the heat exchanger 7 is promoted and the inside of the housing 2 is ventilated. , An outdoor fan 13 is provided. The engine 4 installed below the housing 2 is driven by using a gas such as city gas or propane gas as a fuel. An intake port of the engine 4 is connected to an air cleaner 6. Air is sucked into the engine 4 as combustion air through the engine, and is driven by burning with fuel gas. The pair of compressors 5 and 5 located near the side of the engine 4 are driven by the rotational force generated by driving the engine 4, and the refrigerant such as Freon is compressed by the driving of the compressors 5 and 5. The air is circulated from the heat exchanger 7 to the indoor heat exchanger and the like, and is cooled or heated by the indoor air conditioner. The exhaust port of the engine 4 is connected to an exhaust heat exchanger 11 through an exhaust pipe 14, and high-temperature exhaust gas generated by driving the engine 4 is exhausted as indicated by an arrow X in the drawing. Sent from the pipe 14 to the exhaust heat exchanger 11,
Further, the exhaust gas is sent to the drain separator 12 also serving as a silencer by the exhaust pipe 15, and finally discharged from the exhaust pipe 16 to the atmosphere. The high-temperature exhaust gas discharged from the engine 4 is recovered in the exhaust heat exchanger 11 by cooling water circulated from the engine 4 to the exhaust heat exchanger 11, and becomes hot water by this heat exchange. The heat of the cooling water is used to warm the refrigerant. At this time, the exhaust gas rapidly cooled by the cooling water in the exhaust heat exchanger 11 separates the drain water in the exhaust heat exchanger 11 and separates the exhaust gas from the exhaust heat exchanger 11 into the drain separator 12. The drain water is also separated in the exhaust pipe 15 on the way of being supplied to the drain pipe, and the drain water is also separated in the drain separator 12 before being discharged to the atmosphere. The drain water separated from the exhaust gas at each location is discharged through an exhaust pipe 15 and drain hoses 17 and 18 as shown by an arrow Y in the drawing, and
Exhaust heat exchanger 11 and drain separator 12
The water is discharged to the outside from the drain hose 19 through the drain water treatment device 20 disposed below. The drain water treatment apparatus 20 neutralizes the introduced drain water having an acidic component with a neutralizing agent filled in a container 21 and then discharges the drain water out of the housing 2.
3 to 6 show one embodiment. As shown in FIG. 3, the drain water treatment device 20 is made of a solid material such as calcite, dolomite, limestone, magnesium, and natural coral inside a container 21 composed of a container body 21a and a lid 21b. It is filled with a neutralizing agent 40, and an inflow port 22 and an outflow port 23 of drain water are formed on opposite side walls. As shown in FIG. 4, the inside of the container body 21a is
The internal space between the two inlets 22, 22 and one outlet 23 is defined by three spaces 24, 25, 26, and partition walls 27, 28 partitioning each space have upper and lower portions, respectively. Drain water passage portions 271, 281 cut out in the direction
Is formed, and in each drain water passage portion 271, 281,
Punching metals 272 and 282 are respectively inserted from above and locked. The drain water passage portion 27 formed by the punching metal 272 and 282 of the partition wall 27 and the partition wall 28, respectively.
Numerals 1 and 281 are arranged so as to be offset with respect to the center line of the container 21 from the inlets 22 and 22 to the outlet 23, and formed so that the flow of the drain water in the container 21 may meander and stay. Have been. Nuts 273 and 283 are formed above central portions of the partitions 27 and 28, respectively. The bolt 29 and the nuts 273 and 283 form a container body 21a and a lid as shown in FIG. 21b are assembled in a sealed state. The side wall of the container body 21a is integrally formed with a rib structure 211 for reinforcement and an engaging portion 212 for fixing the inside of the apparatus, and a punching metal is formed on the lid 21b. Locking portions 213 for locking the upper ends of 272 and 282 are formed by integral molding. In such a container 21, the container body 2
The outlet 23 formed in the side wall 1a is located below so that the drain water stays in the container at the water level of N shown in FIG. 5, and the two inlets 22, 22 are both illustrated. The neutralizing agent 40 is located above the water level of N shown in FIG. 5, and the space 25 of the container 21 is filled up to the position M shown in FIG. In such a drain water treatment apparatus 20,
Inflow ports 22, 22 via drain hoses 16, 17
The drain water having an acidic component introduced into the space portion 24 from the drain is passed through the drain water passage portion 2 by the punching metal 272.
After passing through the space 71 and slowly moving toward the outlet 23 while being neutralized by the space 25 so as to stay in the container at the water level of N shown in FIG. After passing through the drain water passage portion 281 made of the metal 282, the water is discharged from the outlet 23 through the drain 26 through the space 26 through the drain hose 19. The drain water treatment apparatus 20 as described above
In this case, since there is a space 26 separated by the partition wall 28 and the punching metal 282 before the outlet 23, the size of the neutralizing agent 40 that has been dissolved and reduced becomes small. Therefore, it does not enter the outlet 23. In addition, since the outlet 23 is not clogged by the neutralizing agent 40, the position of the retained water level N in the container of the drain water is always maintained below the inlets 22,22. In addition, the drain water flowing into the container 21 is not stirred by the inflowing drain water. Further, since there is a space 24 separated by the partition wall 27 and the punching metal 272 in front of the inflow port 22, the inflowing drain water collides directly with the neutralizing agent 40 and the wall of the container. It is not agitated itself. Although the drain water treatment apparatus of the present invention has been described with reference to the embodiment, the present invention is not limited to such an embodiment. Needless to say, it is possible to provide a guide wall in order to make bubbling not occur and to change the shape of the container itself, the positions of the inlet and the outlet , and other specific structures as appropriate. . According to the drain water treatment apparatus of the present invention as described above, the neutralizing agent filled in the container flows out, the outlet is blocked, and the drain water can be smoothly discharged. There is no hindrance, and the agitating action of the drain water in the container is reliably prevented to prevent the generation of an emulsion, so that the problem of the inhibition of the activity of the neutralizing agent due to the adhesion of the emulsion does not occur.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an explanatory view schematically showing an outdoor unit of an air conditioner using a drain water treatment device of the present invention. FIG. 2 is a schematic explanatory view of an outdoor unit of the air conditioner viewed from the direction of arrow A in FIG. FIG. 3 is a partially sectional front view showing one embodiment of the drain water treatment apparatus of the present invention. FIG. 4 is a partial cross-sectional top view of the container body shown in FIG. 3; FIG. 5 is a longitudinal sectional view of a section taken along line CC in FIG. FIG. 6 is a partial cross-sectional side view showing an arrangement state of the punching metal shown in FIG. 3; [Description of Signs] 20 Drain water treatment device 21 Container 22 Inlet 10 Outlet 24 Space 26 Space

Continuation of the front page (56) References JP-A-7-77031 (JP, A) Japanese Utility Model Showa 63-185418 (JP, U) Japanese Utility Model Application Showa 60-137110 (JP, U) (58) Fields surveyed (Int) .Cl. ⁷ , DB name) F01N 3/08 C02F 1/66 F01N 7/00

Claims (1)

(57) [Claims 1] Drain water separated from exhaust gas of an engine is flowed into a container from an inlet, and drain water remaining in the container is neutralized by a neutralizing agent. In a drain water treatment device for discharging neutralized drain water from an outlet to the outside of a container , two inlets are provided for one outlet.
The opening inside the container at each inlet is located above the level of the retained drain water, and the space near the opening inside the container at each inlet is such that the inflow drain water does not collide. A drain water treatment apparatus, wherein a space is formed near the opening inside the container at the outlet to prevent the neutralizing agent from entering.