JPH08312535A - Drain processing device and dry compressed air supply device with it - Google Patents

Abstract

PURPOSE: To provide a drain processing device, which increases the effect of thermal exchange and also has no possibility of discharging of drain water that is not evaporated even if thermal exchange is not conducted sufficiently, and also provide a dry compressed air supply device with the drain processing device. CONSTITUTION: A drain processing device 3 comprises a storage section 31, which is drained water, and a lidless box-like container 30 provided with a passage 32, which is provided on the bottom face of the storage section 31 and in which hot fluid flows, and a plurality of projected bodies 35a are projectedly provided on the bottom face of the storage section 31. A dry compressed air supply device which comprises this drain processing device 3 arranged between a discharge section of an air compressor and air drier and stores the drain water generated by an air drier in the storage section 31 so as to make hot compressed air discharged from the air compressor flow in the passage 32 can effectively evaporate drain water by effectively exchanging heat between the drain water and hot compressed air through a plurality of the projected bodies 35a.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a drain treatment device and a dry compressed air supply device including the drain treatment device.

[0002]

2. Description of the Related Art Conventionally, Japanese Patent Application Laid-Open No. Sho 5 has been used as a drain processing device.
As disclosed in JP-A-8-122378, FIG.
There is known one incorporated in a compressed air supply device as shown in FIG. In this compressed air supply device, a discharge pipe line 92 is provided on the discharge side of an oil-free screw type air compressor 91.
An aftercooler 93 is connected via a drain, and a drain separator 94 is connected to the compressed gas outlet of the aftercooler 93. The aftercooler 93 includes a compressed air passage 93a through which compressed gas passes and a cooling liquid passage 93b through which cooling liquid flows. This drain separator 94
Has a compressed gas outlet 94a and a drain outlet 94b, and drain water contained in the compressed gas (aftercooler 8
As a result of being cooled in 3, the compressed gas is separated from the compressed gas). And the drain separator 94
A drain processing device 95 is connected to the drain outlet 94b. This drain processing device 95 is the drain processing device 9
The outer wall 95a of No. 5 is installed in the discharge part of the air compressor 91 so that it directly contacts the compressed gas. Further, the drain processing device 95 has a drain passage 95b therein, an upstream end 95c of the drain passage 95b is connected to the drain outlet 94b, and an orifice 95e is installed at a downstream end 95d.

In the compressed air supply device equipped with the drain treatment device 95, the compressed gas discharged from the air compressor 91 reaches the aftercooler 93 through the discharge pipe line 92, and while passing through the aftercooler 93. Is cooled by the cooling liquid. The cooled compressed gas enters the drain separator 94, where the drain condensed by the aftercooler 93 is separated and sent from the compressed gas outlet 94a to the point of use. On the other hand, the drain water separated by the drain separator 94 enters the drain treatment device 95 through the drain outlet 94b, is heated by the high-temperature compressed gas discharged from the air compressor 91 while flowing through the drain passage 95b, and is vaporized. And is discharged into the atmosphere from the orifice 95e.

[0004]

However, in the above-mentioned conventional drain treatment device, heat exchange is performed between the drain water and the high-heat compressed gas that comes into contact with the outer wall 95a of the drain treatment device while the drain water flows through the drain passage 95b. By doing so, the drain water is evaporated. Therefore, when the amount of drain water supplied to the drain passage 95b is large due to high humidity atmospheric conditions, heat exchange between the drain water in the drain passage 95b and the compressed gas via the outer wall 95a is insufficient. Therefore, the drain water may not be completely evaporated and may be discharged to the outside as it is.

Particularly, when the compressed air supply device is installed in a place without a drainage facility, discharge of drain water from the drain treatment device may cause various problems.
The present invention has been made in view of the above circumstances, and the drainage water that does not evaporate completely even if the heat exchange efficiency increases and the heat exchange is insufficient is not discharged to the outside. It is a technical problem to be solved to provide a treatment device and a dry compressed air supply device provided with this drain treatment device.

[0006]

[Means for Solving the Problems]

(1) The drain treatment device according to claim 1 comprises a box-shaped container without a lid, which has a reservoir for storing drain water and a flow passage provided on the bottom surface of the reservoir for allowing a high-temperature fluid to flow therethrough, A plurality of protrusions are provided on the bottom surface of the storage portion so as to project therefrom. (2) The dry compressed air supply device according to claim 2 is arranged such that an air compressor and compressed air discharged from the air compressor flow through the flow path portion. A drainage water generated by drying the compressed air by the air dryer, the drainage water being supplied to the reservoir of the drainage treatment device. It is characterized in that it is configured as follows. (3) The dry compressed air supply device according to claim 3 is arranged such that an air compressor and compressed air discharged from the air compressor flow through the flow path portion. A treatment device, an aftercooler with a fan that cools the compressed air that has passed through the drain treatment device, and an air dryer that dries the compressed air that has passed through the aftercooler, and the compressed air is cooled by the air dryer. The drain water generated thereby is supplied to the reservoir of the drain treatment device, and the steam generated in the drain treatment device is guided to the fan of the aftercooler. (4) The dry compressed air supply device according to the second or third aspect may be a device for supplying compressed air to an air jet loom as a preferable aspect.

[0007]

[Action]

(1) In the drain treatment device according to claim 1, the drain water stored in the reservoir is evaporated by being heated and vaporized by heat exchange with the high-temperature fluid flowing through the flow passage provided on the bottom surface of the reservoir. To do. Further, since a plurality of protrusions that increase the contact area with the drain water stored in the storage portion are provided on the bottom surface of the storage portion, the flow path is increased by increasing the heat transfer area with the drain water. The amount of heat exchange between the high-temperature fluid flowing through the section and the drain water, and thus the amount of evaporation of the drain water, increases. Further, since the drain water is stored in the reservoir, if the capacity of the reservoir is within the allowable capacity, the drain water will not be discharged to the outside even if there is insufficient heat exchange with the high-heat fluid. (2) In the dry compressed air supply apparatus according to the second aspect, the high-heat compressed air discharged from the air compressor flows through the flow path section of the drain treatment device. Further, the compressed air that has passed through the drain treatment device is dried by the air dryer and supplied to the external element. Drain water generated by drying the compressed air by this air dryer is supplied to the reservoir of the drain treatment device. Therefore, the drain water stored in the storage section of the drain treatment device is, through the plurality of projections protruding from the storage section, the effect of the high-heat compressed air discharged from the air compressor flowing through the flow path section. It vaporizes and evaporates due to heat exchange. Further, within the allowable capacity of the reservoir of the drain treatment device, even if there is insufficient heat exchange with the high-temperature compressed air from the air compressor, there is no risk of drain water being discharged to the outside. Further, since the high-heat compressed air discharged from the air compressor is cooled by heat exchange with the drain water in the drain treatment device, this drain treatment device also has a function as a so-called aftercooler. (3) The dry compressed air supply apparatus according to claim 3 is the dry compressed air supply apparatus according to claim 2, wherein an aftercooler with a fan is provided between the drain processing device and the air dryer, and the drain processing is performed. Since the steam generated in the device is configured to be guided to the fan of the aftercooler, in addition to the function of the dry compressed air supply device according to claim 2, the air containing the steam generated from the drain treatment device is added. The fan of the aftercooler effectively diffuses and has the effect of reliably preventing recondensation. (4) When the dry compressed air supply device according to claim 2 or 3 is applied to a device for supplying compressed air to an air jet loom, cotton wool and drain water floating in the space where the device is installed. Completely prevent binding with.

[0008]

The present invention will be described below in detail with reference to examples. In the dry compressed air supply apparatus according to the present embodiment, as shown in the schematic view of FIG. 1, an air compressor 1 connected to a drive source (not shown) has a suction pipeline and a discharge pipeline 2 (not shown),
Air from the outside air is sucked into the suction pipe via a suction filter (not shown). The drain processing device 3, the aftercooler 4, and the air dryer 5 are sequentially connected to the discharge pipe line 2.

The drain processing device 3 is shown in the plan view of FIG.
As shown in the sectional view taken along the line AA of FIG. 4 and the side view of FIG. 4, the container 30 is made of a thin plate and has a lid-less box shape, and is provided with a reservoir 31 for storing drain water and a channel 32. There is. The flow path 32 includes a first ridge 33 extending horizontally with the center of the bottom wall 30a of the container 30 extending and one side wall 30b of the container 30.
It is continuously provided in the second protrusion 34 that extends in the vertical direction with the center raised. In addition, the bottom wall 30a of the container 30 and the outer surface of the first raised portion 33 (the bottom wall 30a of the container 30 and the outer surface of the first raised portion 33 form the bottom surface of the storage portion 31) have a large number of thin plate-shaped projections. 35a is integrally provided, and a large number of thin plate-shaped projections 35b are also integrally provided on the bottom wall 30a of the container 30 and the outer surface of the second raised portion 34. It should be noted that each of the protrusions 35a provided on the first raised portion 33 has a substantially U shape as is clear from FIG. 4, and each of the protrusions 35b provided on the second raised portion 34 has a rectangular shape. Make up. The drain processing device 3 is integrally formed by casting an aluminum material having high thermal conductivity.

The flow passage portion 32 of the drain processing device 3 is connected to the discharge pipe passage 2 of the air compressor 1 so that the high-heat compressed air discharged from the air compressor 1 flows through the flow passage portion 32. Has been done. Further, the drain water generated by cooling and drying the compressed air by the air dryer 5 is supplied into the reservoir 31 of the drain processing device 3 through the drain pipe 6.

The aftercooler 4 has a fan 4a connected to a drive motor (not shown), and the fan 4a is arranged above the drain processing device 3. As a result, the steam generated in the drain treatment device 3 is guided to the fan 4a of the aftercooler 4. The air dryer 5 is a refrigerating dryer including a refrigeration cycle having a compressor, a condenser, an expansion valve, and an evaporator, and the compressed air cooled by the aftercooler 4 is passed around the evaporator. It is equipped with a dehumidification function that allows it to be cooled and dehumidified and dried sufficiently. Then, the dry compressed air dried by the air dryer 5 is supplied through a supply pipe 7 to an operating device (not shown) such as an air jet loom that requires the dry compressed air.

In the dry compressed air supply apparatus of this embodiment, the air compressor 1 compresses the air sucked from the outside air, and the air dryer 5 is passed through the discharge pipe line 2, the drain treatment device 3 and the after cooler 4. Compressed air is sent to the air dryer 5
Then, the compressed air is sufficiently dehumidified and dried, and the dry compressed air is supplied to an external operating device. The drain water separated and removed from the compressed air by the air dryer 5 is supplied to and stored in the reservoir 31 of the drain treatment device 3 via the drain pipe 6. In addition, the high-heat compressed air discharged from the air compressor 1 passes through the discharge pipe line 2 and the flow path portion 32 of the drain processing device 3.
Circulate inside. Therefore, the storage unit 3 of the drain processing device 3
The drain water stored in 1 is heated, vaporized and evaporated by heat exchange with the high-heat compressed air flowing through the flow path portion 32. In the drain processing device according to the present embodiment, the storage section 3 is
Since a large number of projections 35a, 35b for increasing the contact area with the drain water stored in the storage section 31 are provided in the inside of the passage 1, the flow passage section is increased due to the increase in the heat transfer area with the drain water. The amount of heat exchange between the high-temperature compressed air flowing through 32 and the drain water, and thus the amount of evaporation of the drain water, increases. Therefore, it is possible to effectively evaporate the drain water even when the amount of the drain water supplied to the storage section 31 of the drain treatment device 3 is large due to the humid atmospheric condition.

Further, the drain processing device according to this embodiment is
The storage portion 31 is formed so as to surround the flow path portion 32, and a large number of projections 35a and 35b are provided to project over substantially the entire storage portion 31, so that the heat exchange is achieved extremely effectively. can do. Further, since the flow path portion 32 is provided on the bottom surface of the storage portion 31 and the large number of projections 35a and 35b are projected from the bottom surface of the storage portion 31, the drain water stored in the storage portion 31 is formed. Even when the amount is small, the drain water can be effectively evaporated. Furthermore, since the drain water is stored in the storage portion 31, if the storage capacity of the storage portion 31 is within the allowable capacity, the drain water will not be discharged to the outside even if there is insufficient heat exchange with the high-heat compressed air. .

Further, in the dry compressed air supply apparatus according to this embodiment, the fan 4a of the after cooler 4 is arranged above the drain treatment device 3, and the steam generated in the drain treatment device 3 is the fan 4a of the after cooler 4. Therefore, the air containing the vapor generated from the drain processing device 3 can be effectively diffused by the fan 4a of the aftercooler 4. Therefore, the dry compressed air supply apparatus according to the present embodiment can be installed in a place requiring a dry atmosphere without any trouble.

Further, in the dry compressed air supply apparatus according to the present embodiment, the compressed air discharged from the air compressor 1 is cooled by heat exchange with the drain water in the drain processing device 3 and is also cooled by the after cooler 4. Since it is cooled and then supplied to the air dryer 5, the load of the dehumidifying mechanism in the air dryer 5 can be effectively reduced. In the above embodiment, the system in which the aftercooler 4 is arranged between the drain treatment device 3 and the air dryer 5 has been described, but as described above, the drain treatment device 3 has a function of cooling compressed air. Therefore, depending on the amount of heat exchange in the drain treatment device 3, the system can be applied to the system without the aftercooler 4, and the system can be simplified by omitting the aftercooler 4.

Further, in the dry compressed air supply apparatus according to the above-mentioned embodiment, a separator is arranged between the aftercooler 4 and the air dryer 5, and drain water condensed by being cooled by the aftercooler 4 is condensed. Separated from compressed air,
It is also possible to use a system in which this drain water is also supplied into the reservoir 31 of the drain treatment device. In the above-mentioned embodiment, when the operating equipment to which the dry compressed air is supplied through the supply pipe 7 is an air jet loom, the binding between the floating cotton wool with the adhesive and the drain water is prevented, and the wind Adhesion of cotton to the floor is reliably avoided.

Further, if necessary, a steam type (electric heating type,
Use other evaporators such as electrode type, infrared type), water spray type (centrifugal type, ultrasonic type, spray type) and natural evaporation type (rotary type, capillary type, dropping type) together with the drain treatment device. It is also possible.

[0018]

【The invention's effect】

(1) In the drain treatment device according to the first aspect, the drain water is stored in the reservoir through a plurality of protrusions that are stored in the reservoir and project in the reservoir to increase the contact area with the drain water. Since it is possible to effectively exchange heat between the drain water and the high-temperature fluid flowing in the flow path, even if the amount of drain water is large due to high humidity atmospheric conditions, the drain water stored in the reservoir can be removed. It becomes possible to vaporize effectively. Also, if the storage capacity is within the allowable capacity, drain water will not be discharged to the outside even if there is insufficient heat exchange with the high-temperature fluid, so when installing this drain treatment device in a place without drainage facilities. Can also be applied to. (2) The dry compressed air supply device according to claim 2, wherein the drain treatment device is applied, the high heat compressed air of the air compressor is used as the high heat fluid, and the drain water generated in the air dryer is evaporated. Therefore, even when this dry compressed air supply device is used in humid atmospheric conditions, the drain water can be effectively evaporated, and if it is within the allowable capacity of the reservoir, the air compressor Even if there is insufficient heat exchange with the high-heat compressed air, the drain water is not likely to be discharged to the outside, and the invention can be applied to the case where the drain water is not installed. (3) The dry compressed air supply apparatus according to claim 3 is the dry compressed air supply apparatus according to claim 2, wherein an aftercooler with a fan is provided between the drain processing device and the air dryer, and the drain processing is performed. Since the steam generated in the device is configured to be guided to the fan of the aftercooler, in addition to the effect of the dry compressed air supply device according to claim 2, air containing steam generated from the drain treatment device is added. The fan of the aftercooler can be effectively diffused, and it can be installed in a place requiring a dry atmosphere without any trouble. (4) In the dry compressed air supply device according to the fourth aspect, it is possible to reliably avoid glueing of the cotton wool with the glue to the floor or the like.

[Brief description of drawings]

FIG. 1 is a schematic diagram illustrating an overall configuration of a dry compressed air supply device according to an embodiment.

FIG. 2 is a plan view of the drain processing device according to the present embodiment.

FIG. 3 is a sectional view taken along the line AA of FIG.

FIG. 4 is a side view of the drain processing device according to the present embodiment.

FIG. 5 is a schematic diagram illustrating a conventional drain processing device.

[Explanation of symbols]

1 is an air compressor, 2 is a discharge pipe line, 3 is a drain treatment device,
Reference numeral 31 is a storage portion, 32 is a circulation portion, 35a and 35b are protrusions, 4 is an aftercooler, 4a is a fan, and 5 is an air dryer.

Claims (4)

[Claims] 1. A lidless box-shaped container having a reservoir for storing drain water and a flow passage provided on the bottom of the reservoir for allowing a high-temperature fluid to flow therethrough, and a plurality of reservoirs are provided on the bottom of the reservoir. The drain processing device is characterized in that the protrusion of the above is provided. 2. An air compressor, a drain treatment device according to claim 1, which is arranged so that compressed air discharged from the air compressor flows through the flow passage portion, and the drain treatment device. And an air dryer for drying the compressed air, wherein the drain water generated by drying the compressed air by the air dryer is supplied to the reservoir of the drain treatment device. Dry compressed air supply device. 3. An air compressor, a drain treatment device according to claim 1, which is arranged so that compressed air discharged from the air compressor flows through the flow passage portion, and the drain treatment device. The drain treatment device includes an aftercooler with a fan for cooling the compressed air and an air dryer for drying the compressed air that has passed through the aftercooler, and drain water generated by cooling the compressed air by the air dryer is a drain treatment device. The dry compressed air supply device, wherein the steam generated in the drain treatment device is introduced into the aftercooler fan while being supplied to the storage part. 4. The dry compressed air supply apparatus according to claim 2, wherein the dry compressed air supply apparatus is for supplying compressed air to the air jet loom.