JPH0631252A - Washing device - Google Patents

Abstract

PURPOSE:To make it possible to select an optimum washing method corresponding to individual washing case. CONSTITUTION:There are provided a dry screw compressor 12, a first blowoff means 16 for blowing off high temperature compressed air, a second ejecting means for ejecting hot water, a branch pipe 30 branching off hot water temperature rising conduits 22,26 and joining a delivery air feed conduit 14, and a changeover valve 24 for changing over hot water flow.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a device for cleaning mechanical parts and the like.

[0002]

2. Description of the Related Art Conventionally, cleaning of mechanical parts and the like has been carried out using a solvent (freon, trichloroethane, etc.) which is an ozone layer depleting substance.

With the recent increasing awareness of environmental problems, the use of such ozone depleting substances is restricted worldwide. Therefore, instead of cleaning with a solvent that is an ozone depleting substance, a steam cleaning device, a hot water cleaning device, a water jet cleaning device, etc. have been proposed.

The temperature of the steam cleaning device is high,
The impact of the cleaning fluid is moderate. Further, although the warm water washing device has a moderate temperature and impact force, it has a function of washing away contaminants adhering to the object to be washed. Furthermore, the water jet cleaning device has a relatively large impact force due to the cleaning fluid, and has an effect of cleaning off adhered contaminants.

[0005]

The temperature, impact force, and necessity of washing (contaminant) required for cleaning depend on the object to be cleaned, the type of pollutant adhered, and the degree of contamination. , Cleaning work environment, and various other factors. In other words, which of the steam cleaning device, the hot water cleaning device, and the water jet cleaning device should be used differs on a case-by-case basis. Therefore, it is desired to freely control the temperature, the impact force, and the presence or absence of the action of washing out (contaminants) with one device.

However, in the conventional cleaning device, the degree of freedom in temperature, impact force, and the action of washing (contaminant) is small, so that the optimum cleaning method (or cleaning device) is selected according to each cleaning case. It was impossible.

The present invention has been proposed in view of the above problems of the prior art, and an object thereof is to provide a cleaning apparatus capable of selecting an optimum cleaning method corresponding to each cleaning case. .

[0008]

A cleaning apparatus of the present invention comprises a dry screw compressor, a first jetting means for jetting the discharge air of the compressor, and a discharge for supplying the discharge air to the first jetting means. An air supply conduit, a temperature-raising water conduit through which cooling water whose temperature has been raised by cooling the compressor flows, a branch pipe branching from the temperature-increasing water conduit and joining the discharge air supply conduit, and a temperature-raising water conduit. A switching valve for switching the flow of the heated cooling water flowing in the passage.

Further, the cleaning apparatus of the present invention comprises a dry screw compressor, a first jetting means for jetting the discharge air of the compressor, and a discharge air supply line for supplying the discharge air to the first jetting means. A second jetting means for jetting cooling water of the dry screw compressor, a temperature-raising water pipe for supplying the cooling water whose temperature is raised by cooling the compressor to the second jetting means, and a temperature-raising water pipe It includes a branch pipe that branches from and joins the discharge air supply pipe line, and a switching valve that switches the flow of the heated cooling water that flows in the heated water pipe line.

Further, the cleaning apparatus of the present invention comprises a dry screw compressor, a first jetting means for jetting the discharge air of the compressor, and a discharge air supply line for supplying the discharge air to the first jetting means. A second jetting means for jetting the cooling water of the dry screw compressor, a temperature-raising water pipeline for supplying the cooling water whose temperature has been raised by cooling the compressor to the second jetting means, and a discharge air supply pipe A discharge air branch pipe that branches from the passage and joins with the suction pipe of the dry screw compressor; discharge air that is interposed in the discharge air branch pipe and that flows in the branch pipe; A heat exchanger for exchanging heat with water, and an adjusting valve for adjusting the flow rate of discharge air flowing through the branch pipe, which is interposed at a position where the discharge air branch pipe branches from the discharge air supply pipe line, are included. I'm out.

In carrying out the present invention, in order to further heat the temperature-raised cooling water (warm water) flowing through the pipe branched from the temperature-raising water pipe line, it is preferable to arrange an auxiliary heater along the branch pipe. .

Further, it is also preferable to mix a cleaning agent, a rust preventive agent, an antifreezing liquid or the like with the hot water flowing in the temperature-raising water cooling pipe or with the discharged air, and jetting it from the first or second jetting means. .

[0013]

The cleaning apparatus of the present invention having the above-described structure is equipped with the dry screw compressor, and the heat energy generated from the dry screw compressor can be effectively used in the cleaning operation.

For example, the air discharged from the compressor is heated by the heat of compression. On the other hand, each part (bearing part, lubricating oil, etc.) of the compressor main body is heated by the compression heat and thus cooled by the cooling water, and as a result, the cooling water is heated. Therefore, it is possible to use the discharged air (high temperature compressed air) heated to a high temperature as it is and mix it with the heated cooling water (warm water) to inject it. The jet of the mixture of the hot compressed air and the hot water has a high temperature, a large impact force, and has a function of washing away contaminants, so that the washing effect is very high.

In the present invention, when the hot compressed air and the hot water are mixed, if the hot water is allowed to flow into the branch pipe by the switching valve, the hot water and the discharge air are mixed when they join the discharge air supply pipe line. , The first jetting means. Here, when the auxiliary heater is arranged along the branch pipe, the hot water flowing in the branch pipe is further heated and vaporized, so that steam can be jetted from the first jetting means. However, depending on the object to be cleaned, it may not be heated until it becomes steam. That is, the auxiliary heater is provided to raise the temperature to the temperature required for cleaning.

In the present invention, of course, it is possible to eject only the hot compressed air from the first ejection means via the discharge air supply pipe line. In such a case, the washing machine of the present invention can be used as a dryer. Further, when only the hot water jet is required, hot water may be jetted from the second jetting means via the temperature-raising water conduit.

The conventional dry screw compressor is often used as a pressurized air source, and the heated air is cooled by a cooler or the like. Further, the temperature-increased cooling water is also cooled by the cooler and used again for cooling the compressor body or is discarded. That is, conventionally, the heat generated by the dry screw compressor has not been used at all. On the other hand, in the present invention, when performing the cleaning work,
The heat generated by the dry screw compressor is effectively used. Therefore, it contributes to energy saving and effective utilization.

[0018]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the accompanying drawings.

In FIG. 1, the cleaning apparatus generally designated by reference numeral 10 is equipped with a dry screw compressor 12. The compressor 12 sucks air from the air suction port 13 and compresses it in the main body, and then its discharge air (high-temperature compressed air) flows through a pipe (discharge air supply pipe line) 14 and a nozzle 16 (first It is ejected from the ejection means 1).

Since each part of the compressor 12 (bearings, lubricating oil, etc.) is heated by the compression heat, cooling water is taken in from the cooling water inlet 18 and needs to be cooled by the internal pipe 20 in order to cool it. The cooling water is supplied to a portion to be heated to perform heat exchange, and the cooling water (hot water) heated by the heat exchange is supplied to the pipe 22.
It is discharged to the outside of the compressor 12 by the (temperature rising water pipe). This pipe 22 is connected to the nozzle 2 via a switching valve 24 and a pipe 26.
8 (second ejection means). Where the pipe 2
Reference numerals 2 and 26 constitute a temperature-raising water pipeline for supplying hot water to the second jetting means (nozzle 28).

In the switching valve 24, the pipe 22 is branched into three types of pipe lines: a pipe 26 connected to the nozzle 28, a pipe 30 joined to the pipe 14, and a pipe 34 for discarding hot water to the outside (reference numeral 32). ing. Here, the pipe 30 constitutes a branch pipe that branches from the hot water supply pipe and joins the discharge air supply pipe (pipe 14). An auxiliary heater 36 is further provided along the pipe 30 to further heat the hot water flowing through the pipe 30. It should be noted that, in FIG. 1, the joining point of the pipe 30 and the pipe 14 (the discharge air supply pipe line) is indicated by reference numeral 38.

In the illustrated embodiment, when the mixture of hot compressed air and hot water is injected for cleaning, the switching valve 24 is switched to connect the pipe 22 and the pipe 30. As a result, the cooling water (hot water) whose temperature has been raised in the internal pipe 20 merges with the pipe 14 at the merge point 38 via the pipe 22, the valve 24, and the pipe 30. Then, as a result of the merging, the hot compressed air and the hot water are mixed, and the nozzle 1
It is injected from 6.

If it is desired to inject steam from the nozzle 16, the auxiliary heater 36 may be operated to heat and vaporize the hot water in the pipe 30.

When the hot compressed air and the hot water are separately jetted, the switching valve 24 is switched so as to connect the pipe 22 and the pipe 26. As a result, the hot compressed air is
The hot water is jetted from the nozzle 16 through the pipe 28 and the hot water is jetted from the nozzle 28 through the pipes 22 and 26.

When it is desired to inject only hot compressed air,
The switching valve 24 may be switched to connect the pipe 22 and the pipe 34, and the hot water may be discarded (32).

FIG. 2 shows another embodiment of the present invention.
The members corresponding to those in FIG. 1 are designated by the same reference numerals.

In FIG. 2, the adjustment valve 4 is provided in the pipe 14.
0 is provided and a discharge air branch pipe 42 branches from the valve 40. This discharge air branch pipe 42
Is joined with the air suction port 13 of the dry screw compressor 12, and a heat exchanger 44 is interposed in the middle thereof. The heat exchanger 44 performs heat exchange between the discharge air (pressurized air) flowing in the discharge air branch pipe 42 and the hot water flowing in the pipe 22.

In the embodiment of FIG. 2, when only the hot water is jetted from the nozzle 28 without jetting the air from the nozzle 16, all the discharge air flowing in the pipe 14 is discharged by the adjusting valve 40. Let it flow in. At this time, since the discharge air is pressurized and has a high temperature, it is returned to the air suction port 13 after being cooled by the cooling water (warm water) flowing in the pipe 22.

When it is desired to reduce the amount of air ejected from the nozzle 16, the adjusting valve 40 adjusts so that only part of the discharge air flowing through the pipe 14 flows through the discharge air branch pipe 42.

Other configurations and operations are the same as those of the embodiment shown in FIG. 1, and therefore redundant description will be omitted.

Although not shown, if a cleaning agent, an anticorrosive agent, an antifreezing liquid, or the like is mixed into the cooling water from the cooling water inlet 18, for example, the cooling water or hot water pipes 20, 22, 3,
4, 30, 26, etc. are cleaned, rust-prevented and frozen.
Similarly, cleaning, rust prevention, and freeze prevention of the downstream side (nozzle 16 side) of the merging point 38 of the pipe 14 are performed.

Further, as shown in FIG. 3, the tank 50 is filled with a cleaning agent, an anticorrosive agent, an antifreezing solution or the like, and a pipe line 52 (see FIG.
It may be merged with the pipe 14 via the middle (indicated by the solid line), or may be merged with the nozzle 16 via the conduit 54 (indicated by the dotted line in FIG. 3). In FIG. 3, reference numeral 56 indicates a valve for adjusting the suction amount of the cleaning agent, the rust preventive agent, the antifreezing liquid, or the like.

[0033]

The effects of the present invention are listed below.

(1) Dry screw The heat energy generated from the compressor can be effectively used.

(2) The discharged air (high-temperature compressed air) heated to a high temperature can be used as it is and mixed with the heated cooling water (warm water) to be injected.

(3) A cleaning system is provided which has a high impact force at a high temperature, has a function of washing away contaminants, and has a very high cleaning effect.

(4) It is also possible to inject only high temperature and high pressure air to operate as a dryer.

(5) Only hot water can be jetted to deal with the cleaning in which only hot water jet is required.

(6) By arranging the auxiliary heater along the branch pipe, steam can be sprayed to perform cleaning.

(7) By mixing a cleaning agent, a rust preventive agent, an antifreezing liquid, or the like into the cooling water, cleaning of the pipe, rust prevention, and freeze prevention can be achieved.

(8) A cooler for cooling compressed air and a cooler for recirculating cooling water can be omitted.

[Brief description of drawings]

FIG. 1 is a block diagram showing an embodiment of the present invention.

FIG. 2 is a block diagram showing another embodiment of the present invention.

FIG. 3 is a block diagram showing a main part of still another embodiment of the present invention.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 10 ... Cleaning device 12 ... Dry screw compressor 13 ... Air suction port 14 ... Piping (discharging air supply pipeline) 16 ... Nozzle 16 (first ejection means) 18 ... Cooling water intake port 20 ... Cooling water internal pipe 22, 26 ... Pipe (heating water pipe line) 24 ... Switching valve 28 ... Nozzle (second jetting means) 30 ... Pipe ( Branch pipe) is configured. Then, along the pipe 30, the pipe 3 34 ... Pipe (for disposal) 36 ... Auxiliary heater 38 ... Confluence point between branch pipe and discharge air supply pipe line 42 ... Discharge air branch pipe 44 ... Heat exchanger 44 50 ... Tank 52, 54 ... Pipe line for sucking up cleaning agent, rust preventive agent or antifreeze solution 56 ... Suction amount of cleaning agent, rust preventive agent or antifreeze solution Valve for adjustment

Claims (3)

[Claims] 1. A dry screw compressor, a first jetting means for jetting the discharge air of the compressor, and a first discharge air
Discharge air supply pipeline for supplying to the jetting means, a temperature rising water pipeline through which cooling water heated by cooling the compressor flows, and a branch from the temperature raising water pipeline to join the discharge air supply pipeline. A cleaning device comprising: a branch pipe and a switching valve that switches a flow of the heated cooling water flowing in the temperature-raising water conduit. 2. A dry screw compressor, a first jetting means for jetting the discharge air of the compressor, and a first discharge air
Of the discharge air for supplying the cooling water of the dry screw compressor, and the cooling water heated by cooling the compressor to the second discharging means. A heating water pipe to be supplied, a branch pipe branching from the heating water pipe to join the discharge air supply pipe, and a switching valve for switching the flow of the heated cooling water flowing in the heating water pipe. Cleaning device characterized by including. 3. A dry screw compressor, a first jetting means for jetting the discharge air of the compressor, and a first discharge air
Of the discharge air for supplying the cooling water of the dry screw compressor, and the cooling water heated by cooling the compressor to the second discharging means. A heating water supply pipe, a discharge air branch pipe that branches from the discharge air supply pipe and joins the suction pipe of the dry screw compressor, and discharge air that is interposed in the discharge air branch pipe and flows in the branch pipe. A heat exchanger for exchanging heat with the heated cooling water flowing in the temperature-raising water pipe line, and a discharge flowing in the branch pipe, which is interposed at a position where the discharge air branch pipe branches from the discharge air supply pipe line. A cleaning device including an adjusting valve for adjusting the flow rate of air.