JPH09327669A - Steam cleaning apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a small-sized steam cleaning apparatus large in the selection width of a cooling medium, low in cost and excellent in cleaning efficiency. SOLUTION: A steam cleaning apparatus cleaning an article 18 to be cleaned with steam of a cleaning soln. W is equipped with a cooling jacket as a cooling means. The cooling jacket indirectly brings a cooling medium into contact with the article 18 to be cleaned at a time of cooling to cool the article 18 to be cleaned. The cooling jacket 22 has function holding the article 18 to be cleaned in a state impossible to fall off.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a steam cleaning apparatus for cleaning an object to be cleaned with a cleaning liquid vapor.

[0002]

2. Description of the Related Art Conventionally, various steam cleaning devices using steam have been proposed as a device for removing dirt such as oil adhering to the surface of an object to be cleaned. First, FIG. 7 shows an example thereof, and its configuration and action will be briefly described.

A conventional steam cleaning device 41 shown in FIG.
Is provided with an immersion cleaning tank 42, a steam cleaning tank 43, a distillation tank 44, a drying chamber 45, an outlet 46, and the like. This device 4
In the immersion cleaning tank 42 arranged at the most front stage of 1,
The cleaning liquid having a temperature about 10 ° C. lower than the boiling point is filled. Ultrasonic vibration is applied to the cleaning liquid by the ultrasonic generator 47. The cleaning object 55 is cooled by being immersed in the cleaning liquid here.

The object 55 to be cleaned which has been lifted from the immersion cleaning tank 42 is then transferred to the steam cleaning tank 43. Most of the dirt is removed by the shower and the work temperature is cooled. In the distillation tank 44 leading to the steam cleaning tank 43, the cleaning liquid is vaporized by the heat of the heater 48.
The inside is filled with the steam. Therefore, dew condensation occurs on the surface of the object to be cleaned 55 placed in the vapor of the cleaning liquid due to the difference between the vapor temperature and the surface temperature of the object to be cleaned 55. As a result, dirt drops into the dew condensation cleaning liquid.

The cleaned object 55 is next dried in the drying chamber 4.
Transferred to 5. A cooling jacket 50 for liquefying the vapor of the cleaning liquid is provided between the steam cleaning tank 43 and the drying chamber 45.
And a cooling coil 51 are provided. The cooled cleaning liquid is supplied to the shower nozzle 49 via the water separation tank 52 and the shower tank 53. Then, the cleaning object 55 placed in the drying chamber 45 is cooled by the cooling fins 54 and then carried out from the take-out port 46.

In addition to the conventional steam cleaning apparatus 41 as described above, a steam cleaning apparatus is disclosed in, for example, Japanese Patent Application Laid-Open No. 4-122024. The cleaning tank of the vapor cleaning apparatus disclosed in the above publication is equipped with a support for holding a plate-shaped object to be cleaned (for example, a semiconductor wafer) at the center of the cleaning tank. When the plate-like object to be cleaned is supported on this support base, the cleaning tank is partitioned into two airtight chambers. Then, when the vapor of the cleaning liquid is supplied to the first chamber side and the cooling medium (for example, pure water etc.) is supplied to the second chamber side, one side surface of the plate-shaped object to be cleaned comes into contact with the cooling medium and the plate is cleaned. The object to be cleaned is directly cooled. As a result, dew condensation occurs on the other side surface of the plate-like object to be cleaned, so that the dirt on the surface is first removed. Then, by switching the valve, the cooling medium is supplied to the first chamber side and the cleaning liquid vapor is supplied to the second chamber side. As a result, dew condensation occurs on the opposite side surface, so that the dirt on the remaining surface is removed.

[0007]

However, the above-mentioned prior art has the following drawbacks. First, the drawbacks of the conventional technique shown in FIG. 7 will be listed.

I) The object to be cleaned 5 when the temperature difference from the steam disappears
Condensation does not occur on the surface of No. 5, and steam cleaning stops at that point. Therefore, steam cleaning cannot be performed continuously, resulting in poor efficiency. In addition, this method
Since the degree of cleaning tends to change depending on the heat capacity of the product, it is disadvantageous especially for products having a low specific heat.

Ii) If the object to be cleaned 55 is large, it becomes difficult to move the object to be cleaned from the immersion cleaning tank 42 to the steam cleaning tank 43. Further, it is necessary to separately provide the immersion cleaning tank 42 and the steam cleaning tank 43, which leads to an increase in size of the apparatus.

Next, the drawbacks of the technique disclosed in Japanese Patent Laid-Open No. 4-122024 will be listed. i) In this method, it is necessary to divide the cleaning tank into two chambers,
It can be applied only to a plate-shaped object to be cleaned.

Ii) Since the cooling medium directly contacts the object to be cleaned, it is indispensable to use the cooling medium having a small effect on the object to be cleaned, and the range of selection of the cooling medium is naturally narrowed. iii) Since the cooling medium is easily contaminated with direct cooling,
Frequent replacement of the cooling medium is required. Therefore, the cost tends to increase.

The present invention has been made to solve the above problems, and an object thereof is to provide a steam cleaning apparatus which is small in size, has a wide range of selection of a cooling medium, is low in cost, and has excellent cleaning efficiency. Especially.

[0013]

In order to solve the above problems, according to the invention of claim 1, in a steam cleaning apparatus for cleaning an object to be cleaned with a steam of a cleaning liquid, the object to be cleaned is cleaned at the time of cleaning. A vapor cleaning device is characterized in that it is provided with a cooling means for cooling the object to be cleaned by indirectly contacting a cooling medium with the cooling device.

According to a second aspect of the present invention, in the first aspect, the cooling means is a cooling jacket formed by bending a hollow pipe into a substantially lattice shape, and the object to be cleaned is cleaned at the time of cleaning. It is said that the cooling jacket is held on the lattice part so that it cannot fall off.

According to a third aspect of the present invention, in the first or second aspect, the cooling means is swung during cleaning. Hereinafter, the "action" of the present invention will be described.

According to the first aspect of the invention, when the cooling means is brought into contact with the object to be cleaned during cleaning, heat exchange is performed between the object to be cleaned and the cooling medium. Specifically, the heat of the object to be cleaned is taken by the cooling medium flowing inside the cooling means. Therefore, the temperature of the object to be cleaned becomes relatively lower than the temperature of the surrounding steam, and the temperature difference causes dew condensation on the surface of the object to be cleaned, thereby removing the dirt on the surface.

According to this apparatus, the cleaning liquid vapor can be applied to the cleaning object while cooling the cleaning object, so that the temperature difference between the vapor and the surface of the cleaning object can be maintained. Therefore, dew condensation does not occur on the surface of the object to be cleaned,
At that point, steam cleaning will not stop. That is, it becomes possible to continuously perform steam cleaning,
Cleaning efficiency is also improved. In addition, the degree of cleaning is less likely to change depending on the heat capacity of the object to be cleaned, and steam cleaning is possible regardless of whether it is large or small.

Further, with this apparatus, it is not necessary to separately provide the immersion cleaning tank and the steam cleaning tank, so that the apparatus can be downsized. In addition, since the object to be cleaned does not move during cleaning, it is possible to clean large steam.

Further, since it is not necessary to partition the cleaning tank in this apparatus, it is possible to apply it to something other than the plate-like object to be cleaned. Further, in this apparatus, since the cooling medium does not directly contact the object to be cleaned, it is not necessary to intentionally use the cooling medium which has a small influence on the object to be cleaned. Therefore, the selection range of the cooling medium is widened. Further, in this device, the cooling medium does not directly contact the object to be cleaned, so that the cooling medium is less likely to be contaminated. Therefore, it is not necessary to frequently replace the cooling medium, and it is possible to reliably prevent cost increase.

According to the second aspect of the present invention, the cleaning solvent vapor is treated with respect to the object to be cleaned while the object to be cleaned is held by the lattice portion of the cooling jacket so as not to fall off. At this time, the heat of the object to be cleaned is conducted to the cooling medium flowing inside through the peripheral surface of the pipe forming the lattice, and as a result, the object to be cleaned is cooled. Further, since the cooling jacket is formed by bending the pipe in a substantially lattice shape, it is relatively easy to form and is suitable for cost reduction. In addition, if the cooling jacket has a substantially lattice shape, the vapor of the cleaning liquid is hardly blocked, and the vapor is likely to hit the entire object to be cleaned. Therefore, unwashed parts are less likely to occur,
A high degree of steam cleaning is realized.

According to the third aspect of the present invention, when the cooling means is swung during cleaning, the cleaning liquid containing dirt flows down from the surface of the object to be cleaned. Therefore, reattachment of dirt to the object to be cleaned can be prevented, and more advanced steam cleaning can be achieved. In the invention of the second aspect, it is preferable that the contact point between the object to be cleaned and the lattice portion can be changed when swinging. With this configuration, the vapor of the cleaning liquid hits the object to be cleaned evenly, so that the uncleaned portion is more difficult to occur.

[0022]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A continuous steam cleaning apparatus 1 embodying the present invention will be described in detail below with reference to FIGS.

The continuous steam cleaning apparatus 1 of the present embodiment roughly includes a cleaning basket 2, a cleaning basket support frame 3, an air cylinder 4 as an oscillating device, an antifreeze / hot water supply device 5,
It is provided with a steam generator 6, a cleaning liquid injection nozzle 7, a cleaning liquid pressure feed pump 8, a waste liquid case 9, and the like.

First, the circulation system for the cooling medium will be described. As shown in FIG. 2, the antifreeze / hot water feeder 5 is
It is connected to the cleaning basket 2 via resin hoses 10 and 11 as pipes. Therefore, the antifreeze liquid or the hot water in the antifreeze liquid / hot water supply device 5 is supplied from the resin hose 10 to the cleaning basket 2
→ Move in the order of the resin hose 11 and
It returns to the inside of the hot water supplier 5. The antifreeze liquid is supplied to the cleaning basket 2 during the steam cleaning, and the hot water is supplied to the cleaning basket 2 after the steam cleaning is completed.

Next, the cleaning liquid circulation system will be described. As shown in FIG. 2, the outlet side of the steam generator 6 is connected to the pipe 1
It is connected to the plurality of nozzles 7 via 2. In the present embodiment, a flexible metal tube 12 branched in the middle is used as the pipe 12. The tip of each nozzle 7 is directed to the cleaning basket 2 that is swingably provided on the lower end of the support frame 3. Below the nozzle 7, a waste liquid case 9 is installed. The waste liquid case 9 is connected to the inlet side of the steam generator 6 via a metal tube 13 as a pipe. A pump 8 is provided on the way of the tube 13.

Inside the steam generator 6, there is provided a heater 17 for vaporizing the liquid cleaning liquid W1 by heating. In this embodiment, an alternative CFC "HCFC-225" (trade name, manufactured by AK-225 Asahi Glass Co., Ltd.) is used as the cleaning liquid W1. Of course, it is also possible to use an alternative CFC other than HCFC-225, such as PFC, HFC, HCFC-141b, etc., as the cleaning liquid W1. Furthermore,
Alcohols such as IPA (isopropyl alcohol) and hydrocarbon solvents can also be used.

The cleaning liquid W1 which has been vaporized by heating the heater 17 passes through the tube 12 and is then jetted from the tip of each nozzle 7. As a result, the cleaning liquid W1 is processed on the cleaning basket 2 and the object to be cleaned 18 held therein. 3 and 4, the cylindrical sleeve member 18 is shown.
An object to be cleaned 18 composed of a and a stepped disc-shaped member 18b is illustrated. The dirty cleaning liquid W1 dripping from the cleaning basket 2 or the like is collected by the dirty liquid case 9. The collected cleaning liquid W1 is pumped by the pump 8 on the tube 13 to be returned into the steam generator 6 again.

Next, the structure of the cleaning basket 2 will be described. As shown in FIGS. 1 (a) and 1 (b), the cleaning basket 2 of the present embodiment is composed of a fixed frame 21 and a cooling jacket 22 as cooling means.
The cooling jacket 22 is formed by bending a pipe P1 for circulating a cooling medium into a substantially lattice shape. In the present embodiment, a hollow stainless steel pipe P1 having a diameter of 3 mm and a wall thickness of 0.3 mm is used, and is bent to have a length of 240 mm and a width of 270 mm. The cooling jacket 22 has square lattice portions G1 at a plurality of locations. As shown in FIG. 4, the object to be cleaned 1 is placed in these grid portions G1.
The eight sleeve members 18a are loosely fitted. As a result, the object to be cleaned 18 is held in the cooling jacket 22 so as not to fall off during cleaning. However, the contact point between the object to be cleaned 18 and the lattice portion G1 is changed to some extent during swinging (see FIG. 4).

Here, the reason why it is hollow is that a fluid such as a cooling medium can be circulated inside. The reason why stainless steel is selected as the material for the pipe P1 is not only excellent workability, cost performance and strength, but also excellent resistance to various liquids. The reason for selecting a metal such as stainless steel is that the heat conductivity is higher than that of the resin and the like, so that the heat conduction efficiency can be improved. Further, the reason why the cleaning basket 2 is formed in a lattice shape is that the object 18 to be cleaned can be reliably held in the plurality of lattice portions G1 and the contact area with the object 18 to be cleaned can be minimized. is there.

The cooling jacket 22 is fixed to the lower side of the fixed frame 21. On both sides of the central portion of the fixed frame 21, support shafts 23 serving as swing centers are provided in a protruding manner. These support shafts 23 are supported by bearing portions provided at the lower end of the support frame 3. Further, handles 24 used when the cooling basket 2 is transferred are provided at both ends of the fixed frame 21, respectively. Fixed frame 21
A rod mounting piece 25 is provided at one end of
The tip of the rod 4a is fixed to the rod mounting piece 25. Therefore, when the air cylinder 4 expands and contracts, the entire cooling basket 2 swings around the support shaft 23. In this embodiment, the swing angle is set to ± 45 °.

A continuous steam cleaning apparatus 1 constructed in this way
How to use is explained. First of all, the cooling basket 2
After setting a plurality of objects 18 to be cleaned, the air cylinder 4 is driven to rock the cooling basket 2.

Next, the antifreeze liquid (50% ethylene glycol and 50% water in this embodiment) is supplied into the cooling jacket 22 by driving the circulation system such as the cooling medium. The temperature of the antifreeze liquid is several tens of degrees Celsius higher than the boiling point of the cleaning liquid W1.
It is set to a low temperature. As a result, the temperature of the pipe P1 forming the cooling jacket 22 becomes low.

Since the cold pipe P1 and the object to be cleaned 18 are in contact with each other, heat is exchanged between them. Specifically, the heat of the object to be cleaned 18 is taken by the antifreeze liquid flowing inside the cooling jacket 22.

Then, by driving the cleaning liquid circulation system, the steam of the cleaning liquid W1 is jetted from the nozzle 7 to adhere the steam to the outer surface of the object to be cleaned 18. At this time, there is some temperature difference between the outer surface temperature of the object to be cleaned 18 and the steam temperature. Then, due to this temperature difference, dew condensation occurs on the outer surface of the object to be cleaned 18, so that the dirt on the outer surface is removed.

After the steam cleaning is performed for a predetermined time, the supply of the antifreeze liquid and the supply of the cleaning liquid W1 are stopped, and the object to be cleaned 18 is dried. At this time, the antifreeze / hot water feeder 5
By switching a valve (not shown) therein, hot water is supplied to the cleaning basket 2 in place of the antifreeze liquid. As a result, the temperature of the object to be cleaned 18 rises, and the drying time can be shortened.

The results of the cleaning test conducted using the continuous steam cleaning apparatus 1 will be described below. Here, a relatively small object to be cleaned 18 (the diameter of the disk-shaped member 18b is about 40 mm) with the processing oil and processing waste attached to the outer surface.
Was used. The conditions for steam cleaning are as follows.

-Steam temperature 50 ° C (however, HCF
The boiling point of C-225 is 54 ° C) ・ Steam processing time 30 minutes ・ Steam supply amount 10 liters / hour ・ Heater capacity 1 kW ・ Antifreeze temperature 0 ° C ・ Cooling time 30 minutes ・ Antifreeze Supply amount 3 liters / minute, -Hot water temperature 60 ° C, -Drying time 5 minutes-Hot water supply amount 3 liters / minute. When steam cleaning was carried out on a trial basis under the above conditions, it was confirmed that dew was constantly generated on the outer surface of the object to be cleaned 18. Therefore, unlike the prior art, it was possible to perform steam cleaning for a long time. Then, when the object 18 to be cleaned that had been steam-cleaned was observed, no uncleaned portion was found.
Further, the results of measuring the degree of contamination with carbon tetrachloride and pure water were as follows.

Processing oil: Adhesion amount is 50 before cleaning
While it was 0 mg / piece, it was 0.
Reduced to 12 mg / piece.・ Processing waste No detection after cleaning.

As is clear from the above results, it has been confirmed that the object to be cleaned 18 is certainly cleaned. Now, the characteristic effects of the present embodiment will be listed.

(A) In the continuous steam cleaning apparatus 1, it is possible to apply the steam of the cleaning liquid W1 to the object to be cleaned 18 while cooling the object to be cleaned 18, and the steam and the outer surface of the object to be cleaned 18 are separated. The temperature difference can be maintained. Therefore, the object to be cleaned 1
Condensation does not occur on the outer surface of 8, and steam cleaning does not stop at that point. That is, the steam cleaning can be continuously performed, and the cleaning efficiency can be improved. Further, since the degree of cleaning is less likely to change depending on the size of the heat capacity of the object to be cleaned 18, it is possible to perform steam cleaning regardless of whether it is large or small.

(B) With this device 1, it is not necessary to separately provide an immersion cleaning tank and a steam cleaning tank, which is different from the conventional case, so that the apparatus 1 can be downsized. In addition, since the object to be cleaned 18 does not move during cleaning, even a large object can be steam cleaned.
In the apparatus 1 of the present embodiment, after supplying the antifreeze liquid to the cleaning basket 2, the hot water is supplied in that state by switching the valve. Therefore, it is not necessary to separately provide a drying chamber, and in this respect also, the configuration is suitable for downsizing.

(C) In this device 1, unlike the prior art, it is not necessary to partition the cleaning tank into two chambers, so that it can be applied to a non-plate-shaped object to be cleaned 18 as shown in FIG. it can. Therefore, there is basically an advantage that the shape of the object to be cleaned 18 does not matter.

(D) In this device 1, since the antifreezing liquid, which is the cooling medium, does not directly contact the object to be cleaned 18, it is not necessary to intentionally use a cooling medium that has a small effect on the object to be cleaned 18. Therefore, the selection range of the cooling medium is surely widened. Further, in this device 1, the cooling medium does not directly contact the object to be cleaned 18, so that the cooling medium is less likely to be contaminated. Therefore, it is not necessary to frequently replace the cooling medium, and it is possible to reliably prevent cost increase.

(E) According to this apparatus 1, the vapor of the cleaning liquid W1 is kept in a state in which the object to be cleaned 18 is held by the lattice portion G1 of the cooling jacket 22 so as not to fall off.
8 are processed. At this time, the heat of the object to be cleaned 18 is conducted to the antifreeze through the peripheral surface of the pipe P1 forming the lattice portion G1, and as a result, the object to be cleaned 18 is cooled. Further, since the cooling jacket 22 is formed by bending the pipe P1 into a substantially lattice shape, the cooling jacket 22 is relatively easy to form and is suitable for cost reduction. In addition, when the cooling jacket 22 has a substantially lattice shape, the vapor of the cleaning liquid W1 is hardly blocked, so that the vapor can easily hit the entire object to be cleaned 18.
Therefore, an uncleaned portion is less likely to occur, and advanced steam cleaning can be realized.

(F) According to this apparatus 1, since the cooling basket 2 is swung during cleaning, dew condensation of the cleaning liquid W1 containing dirt flows down from the outer surface of the object to be cleaned 18. Therefore, reattachment of dirt to the object to be cleaned 18 is prevented, and a higher degree of steam cleaning can be achieved. Further, in this embodiment, the object to be cleaned 18 is shaken at the time of rocking.
The contact point between the grid portion G1 and the grid portion G1 is changed. Therefore, the vapor of the cleaning liquid W1 hits the object to be cleaned 18 evenly. This also helps prevent the generation of uncleaned portions.

The present invention can be modified, for example, as follows. (1) Another example of continuous steam cleaning apparatus 3 shown in FIGS.
1 is a large object to be cleaned (a tubular member in the figure) 32
The structure is particularly suitable for cleaning the. The cooling jacket 33 as cooling means is formed by bending the pipe P1 so as to have a shape that extends along a half of the peripheral surface of the object to be cleaned 18. Even with such a configuration, since it is possible to apply the steam of the cleaning liquid W1 to the object to be cleaned 18 while cooling it, it is possible to continuously perform the steam cleaning.

(2) Instead of using the cooling jacket 22 as in the first embodiment as the cooling means, for example, the following may be performed. A high thermal conductor such as a copper plate is used as a cooling means, and the high thermal conductor is brought into contact with the object to be cleaned 18 during cleaning. In this case, a basket-shaped high thermal conductor may be formed by bending using a copper wire as a material. Then, a part of this high thermal conductor is drawn out to a region not exposed to the cleaning liquid W1 and cooled. Then, the entire high thermal conductor is cooled, and the temperature of the contact portion with the object to be cleaned 18 is also lowered. As a result, the object to be cleaned 18 is indirectly cooled and dew condensation can be generated there.

(3) The cleaning basket 2 may be swung by using an actuator other than the air cylinder 4. (4) The object to be cleaned 18 on the outer surface of the metal pipe P1
The part that can come into contact with is preferably covered with a film made of fluororesin or the like. By doing so, it is possible to prevent the outer surface temperature from decreasing in the non-contact portion, and to improve the cooling efficiency.

Here, in addition to the technical ideas described in the claims, the technical ideas grasped by the above-described embodiments are listed below together with their effects. (1) In any one of claims 1 to 3, a portion of the cooling means that can come into contact with the object to be cleaned is covered with a film made of a material having a lower thermal conductivity than a main forming material of the cooling means. A steam cleaning device characterized in that With this configuration, the outer surface temperature of the contact portion decreases, while the outer surface temperature of the non-contact portion is prevented from decreasing. Therefore, the cooling efficiency is improved, and eventually the cost is reduced.

(2) In a steam cleaning apparatus for cleaning an object to be cleaned with the steam of the cleaning liquid, the steam cleaning apparatus includes a high thermal conductor as a cooling means, and the high thermal conductor protects the object to be cleaned at the time of cleaning. The steam cleaning apparatus is configured so as to come into contact with each other and indirectly cool the object to be cleaned. With this configuration, it is possible to provide a steam cleaning device that is small in size, has a wide selection of cooling media, is low in cost, and has excellent cleaning efficiency.

(3) A pipe in which a cooling medium can be circulated is bent and formed in a substantially lattice shape, and an object to be cleaned is held in the lattice portion. Cooling jacket for steam cleaning equipment. By using the cooling jacket having such a configuration, the excellent steam cleaning apparatus of the present invention can be easily and surely realized.

(4) A steam cleaning method characterized in that the object to be cleaned is cleaned with the steam of the cleaning liquid while cooling the object to be cleaned by indirectly contacting the object to be cleaned with a cooling medium. . With this method, the temperature difference between the steam and the surface of the object to be cleaned can be maintained, so that continuous steam cleaning is possible and cleaning efficiency is also improved. Further, it is possible to expand the selection range of the cooling medium and reduce the cost.

The technical terms used in this specification are defined as follows. "Cooling medium: In addition to liquids such as antifreeze, it also includes gases and other fluids."

[0054]

As described above in detail, according to the inventions described in claims 1 to 3, the size is small and the selection range of the cooling medium is wide.
Moreover, it is possible to provide a vapor cleaning device that is low in cost and excellent in cleaning efficiency.

According to the second aspect of the present invention, since the cooling jacket can be formed relatively easily, the cost can be reduced, and the entire object to be cleaned is likely to be exposed to steam, so that it is highly advanced. It is possible to realize excellent steam cleaning.

According to the third aspect of the present invention, since redeposition of dirt on the object to be cleaned is prevented, it is possible to realize a higher degree of steam cleaning.

[Brief description of drawings]

FIG. 1A is a front view of a cooling means of a continuous steam cleaning apparatus according to an embodiment, and FIG. 1B is a plan view thereof.

FIG. 2 is an overall schematic view of a continuous steam cleaning apparatus.

FIG. 3 is a perspective view of an object to be cleaned.

FIG. 4 is an enlarged cross-sectional view of an essential part showing a state in which an object to be cleaned is fixed to a cooling unit and cleaning is performed.

FIG. 5 is a schematic front view showing a main part of another example of a continuous steam cleaning apparatus.

FIG. 6 is a schematic cross-sectional view showing the main parts of the continuous steam cleaning apparatus.

FIG. 7 is a schematic diagram showing a conventional vapor cleaning device.

[Explanation of symbols]

1, 31 ... (Continuous) steam cleaning device, 18, 32 ... Object to be cleaned, 21, 33 ... Cooling jacket as cooling means, P
1 ... Pipe for circulating the cooling medium, G1 ... Lattice part, W1 ... Cleaning liquid.

Claims (3)

[Claims] 1. A steam cleaning apparatus for cleaning an object to be cleaned with a cleaning liquid vapor, comprising cooling means for cooling the object to be cleaned by indirectly contacting a cooling medium with the object to be cleaned at the time of cleaning. A steam cleaning device characterized in that 2. The cooling means is a cooling jacket formed by bending a hollow pipe into a substantially grid shape, and the object to be cleaned is held in a grid part of the cooling jacket in a non-detachable manner during cleaning. The steam cleaning apparatus according to claim 1, wherein the steam cleaning apparatus is a steam cleaning apparatus. 3. The steam cleaning apparatus according to claim 1, wherein the cooling means is swung during cleaning.