JP2001346859A - Sterilizer - Google Patents

Abstract

PROBLEM TO BE SOLVED: To remove foreign matter such as saponified matter occurring on the surface of an object to be sterilized and deodorized in a sterilizer sterilizing and deodorizing a kitchen or the like. SOLUTION: An object is sterilized and deodorized through water supplied by passing electric current to electrodes 9 and 10 in an electrolytic bath 11 and opening a valve 16, and a detergent is supplied to the surface of the object from a detergent tank 17 through water. Therefore, in addition to sterilization and deodorization, sticking of foreign matter can be prevented.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sterilizing apparatus for sterilizing and cleaning microorganisms, and more particularly to sterilizing and cleaning microorganisms in kitchens and food factories for general households, cooking-related business.

[0002]

2. Description of the Related Art A conventional sterilizing apparatus of this kind is disclosed in Japanese Patent Laid-Open No. 5-2 / 1993.
What was described in 69182 gazette was common. As shown in FIG.
A bleaching tank 2 for performing bleaching and washing, and an electrolytic tank 3 capable of generating a hypochlorite compound by electrolysis therein, and a washing tank 4 has a drain port 7 where food leftovers and garbage Are trapped, suppressing their outflow downstream. When sterilization and deodorization of the drain port 7 are performed, the cock 5 is switched by turning the knob 6 so that the hypochlorite compound flows into the drain port 7 and sterilization and deodorization can be performed.

[0003]

However, in the above-mentioned conventional sterilizing apparatus, although the drain port 7 can be sterilized, fat and oil components are mixed in the residual rice, so that the fat and oil and the hypochlorous acid generated by electrolysis are mixed. Since saponified products are generated by compounds or sodium hydroxide, and fats and oils are solidified,
Adhering to pipes and washing tanks, it has an adverse effect such as oily smell and poor passage of water at the drain.

[0004]

In order to solve the above-mentioned problems, the present invention provides a sterilizing means for supplying a substance capable of suppressing the growth of microorganisms, and a method for producing a substance which is formed on a solid surface such as oils and fats or saponified substances adhered to the solid surface. A foreign substance removing means for supplying a substance capable of suppressing the removal or generation of foreign substances, and a transport means capable of transporting these substances to a target site for sterilization and foreign substance removal.

[0005] According to the above invention, sterilization can be performed by sterilizing with a sterilizing substance supplied by a sterilizing means and supplying a foreign substance removing substance capable of removing saponified substances and solidified oils and fats by the foreign substance removing means. At the same time, foreign matter can be removed, and oil odor and clogging of the drain can be eliminated.

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS A sterilizing apparatus according to a first aspect of the present invention includes a sterilizing means for supplying a substance capable of suppressing the growth of microorganisms, and a sterilizing means formed on a solid surface such as oil or fat or a saponified substance adhered to the solid surface. A foreign substance removing means for supplying a substance capable of suppressing the removal or generation of foreign substances, and a transport means capable of transporting these substances to a site to be subjected to sterilization and foreign substance removal.

[0007] The germicidal substance supplied from the bactericidal means suppresses the growth of microorganisms, and at the same time, the fat or oil or
Since it is possible to remove the saponified product generated by the reaction of the fat and alkali with the alkali, the solidified fat and fat and the saponified product adhere to the solid surface without causing an oily smell or impairing the appearance. Can be eliminated.

In a sterilizing apparatus according to a second aspect of the present invention, the conveying means has a water supply means capable of supplying water, and a flow passage through which water supplied from the water supply means can pass, and the conveying means has The substances supplied from the sterilizing means and the foreign matter removing means are supplied to a portion to be sterilized and the foreign matter removed.

The sterilizing substance and the foreign substance removing substance are supplied to a portion to be sterilized and the foreign substance are removed via water sent from the conveying means, so that these substances can be removed by water simultaneously with the sterilizing and washing treatment. Can be washed away, and the solute contained in the germicidal substance and the foreign matter removing substance does not precipitate out by drying and does not impair the appearance, so that the object of the germicidal cleaning can be always kept clean.

A sterilizing apparatus according to a third aspect of the present invention is an electrolyzing means having at least a pair of electrodes inside the sterilizing means and capable of generating electrolyzed water by electrolyzing water.

[0011] Then, by electrolyzing water by electrolysis to generate electrolyzed water containing a hypochlorite compound, etc., it is possible to always generate a constant amount of electrolyzed water containing a hypochlorite compound, Unlike chemicals, there is no reduction in sterilization performance due to a decrease in concentration or deterioration due to time change.

In the sterilization apparatus according to a fourth aspect of the present invention, a diaphragm is disposed in the electrolytic means so that acidic electrolytic water and alkaline electrolytic water can be separated and generated.

By electrolysis in an electrolytic cell having a diaphragm, acidic electrolytic water and alkaline electrolytic water can be generated across the diaphragm. Since the acidic electrolyzed water obtained here contains a hypochlorite compound, it can be used for sterilization and does not contain sodium hydroxide.
Sterilization can be performed without producing saponified products.
However, since the solidified fats and oils are difficult to remove, supplying the foreign matter removing substance from the foreign matter removing means does not impair the appearance, so that the object to be sterilized and washed can always be kept clean.

The sterilization apparatus according to claim 5 of the present invention has a chlorine ion supply means capable of supplying chloride ions to the electrolytic means.

When the chlorine ion concentration in the water is low, it is difficult to generate a hypochlorite compound by electrolysis, and it is difficult to obtain electrolyzed water containing the hypochlorite compound at a desired concentration. Although sufficient sterilization performance cannot be obtained, the concentration of hypochlorous acid generated by performing electrolytic decomposition by supplying chloride ions with a chlorine ion supply means can be kept constant, and stable sterilization performance can be obtained. be able to.

In the sterilization apparatus according to claim 6 of the present invention, the substance supplied from the foreign matter removing means is a surfactant.

By removing the fats and oils adhering to the solid surface by the surfactant, the hypochlorite compound or sodium hydroxide generated by the electrolysis does not react with the fats and oils on the solid surface, and the solid surface is removed. It can be kept clean.

In the sterilization apparatus according to claim 7 of the present invention, the substance supplied from the foreign matter removing means is hot water.

Since the fat and oil component adhering to the solid surface can be removed by the surface active action of the warm water, the fat and oil react with the hypochlorite compound or sodium hydroxide generated by the electrolysis on the solid surface. And the solid surface can be kept clean.

[0020] In the sterilizing apparatus according to claim 8 of the present invention, the substance supplied from the foreign matter removing means is a fat and oil decomposing agent.

[0021] Even if the fat component adheres, it can be removed by decomposition, so that the solid surface can be kept clean.

[0022]

Embodiments of the present invention will be described below with reference to the drawings.

(Embodiment 1) In this embodiment, an example of sterilization, deodorization and foreign matter removal of a drain port of a sink will be described.

FIG. 1 is a structural view of a sterilizing apparatus according to a first embodiment of the present invention, and FIG. 2 is a schematic diagram when the sterilizing apparatus is used for sterilizing a kitchen sink.

In FIG. 1 and FIG. 2, reference numeral 8 denotes a sterilizer, and an electrolytic cell 1 as an electrolytic means having electrodes 9 and 10 therein.
1 and a chlorine supply means for supplying chlorine ions to the electrolytic cell 11, in this embodiment, a salt tank 1 having a saline solution stored therein.
2 and a salt channel 13 connecting the salt tank 12 and the electrolytic cell 11
And a salt pump 14 for feeding a salt solution to the electrolytic cell 11 through the salt channel 13. Further, as a transport means, it has a flow path 15 of tap water indirectly or directly connected to a water pipe, and a valve 16 for controlling inflow and outflow of tap water. The foreign matter removing means includes a detergent tank 17 in which a kitchen neutral detergent is stored as a surfactant, and a detergent flow path 18 connecting the detergent tank 17 and the flow path 15. A detergent pump 19 for feeding a neutral detergent for kitchen in a detergent tank 17 as a surfactant tank to the flow path 15 is disposed above. The electrolyzed water generated in the electrolyzer 11 is discharged from the end portion 20 of the flow path 15. Then, the electrolytic cell 11 and the flow path 15 are connected via flow paths 21 and 22. When the valve 16 is opened, tap water passes through the flow path 21 from the flow path 15 and enters the electrolytic cell 11 to flow therethrough. A water circuit is formed through the passage 22 and re-entering the passage 15.

Further, the energization of the electrodes 9 and 10 in the electrolytic cell 11 and the operation control of the valve 16, the salt pump 14, and the detergent pump 19 are performed by a control device 23 as control means.

FIG. 2 is a view showing an example of an arrangement in which the sterilizing device 8 is installed on a sink 24.
5, a worktop section 26, and a callan 27, a sink section 25 has a drain port 28, a trap section 29 at the drain port 28, and a basket for receiving garbage and the like in the trap section 29. A drainage channel 31 is connected to the lower side of the trap portion 29, and these are referred to as a drainage portion 32 in this embodiment.

Next, the operation and operation will be described. First,
Before performing sterilization, deodorization, and foreign substance removal of the drainage part 32 (drainage port 28 of the sink, basket 30, trap 29, drainage channel 31), the valve 16 is opened by the control device 23, and tap water is fed into the sterilization device 8; Tap water is injected into the electrolytic cell 11 through the flow path 15 and the flow path 21. After a lapse of a predetermined time in the controller 23, the valve 16 is closed, the salt pump is started, and the salt solution in the salt tank 12 is discharged from the salt tank 14 through the salt channel 13 by the salt pump 14 so that the chlorine ion concentration in the electrolytic cell 11 becomes the predetermined concentration. Send it to be. After that, the control means 23 controls the electrodes 9,
10 is energized to generate electrolyzed water containing an oxidizing substance such as a hypochlorite compound in the electrolytic cell 11 by electrolysis.

At this time, the polarity of the electrodes 9 and 10 is periodically switched to prevent the scale components from adhering to the surfaces of the electrodes 9 and 10. When the electrodes 9 and 10 are energized for a predetermined time and electrolyzed water having a sufficient concentration is generated in the electrolytic cell 11, the drainage section 32 can be prepared for sterilization.

When sterilizing and deodorizing the drain port 28,
The valve 16 is opened by the control device 23, and tap water is fed into the electrolytic cell 11 via the flow path 15 and the flow path 21. The electrolytic water generated in the electrolytic cell 11 via the tap water is sent again from the flow path 22 to the flow path 15, mixed with the tap water passing through the flow path 15, discharged from the flow path end 20, and discharged. The unit 32 is reached. Discharging the electrolyzed water from the flow path end portion 20 and bringing the electrolyzed water into contact with garbage such as garbage and garbage on the surface of the drain port 28, the trap 29, the drainage channel 31 and the inside, outside and inside of the basket 30. Thus, microorganisms such as bacteria and mold that propagate in these can be sterilized. Therefore, the occurrence of odors and slime (biofilm) due to the propagation of microorganisms
Can be suppressed.

However, there is a case where the garbage contains an oil or fat component, or the wastewater flowing into the sink 25 contains an oil or fat component such as dressing or edible oil. In such a case, when the electrolyzed water and the wastewater are mixed, they react with the alkali or hypochlorite compound in the electrolyzed water,
Since the environment is easy to produce a saponified substance, the saponification reaction gradually progresses with time, and white foreign matter is generated throughout the drainage section 32. Also, even if it does not react with the electrolyzed water, when the amount of fats and oils is large, solidified substances are gradually generated in the trap 29, the basket 30, the drainage passage 31 and the like with the lapse of time, impairing the appearance, and at the same time, these parts Many people feel uncomfortable and feel uncomfortable. If this phenomenon progresses further, the drainage channel 31 may be clogged.

Then, after the treatment with the electrolytic water, the detergent pump 19 is operated, a predetermined amount of neutral detergent is fed into the flow channel 15, discharged from the flow channel end portion 20 via tap water, and discharged to the drain portion 32. Make contact. By this operation, the fat component adhering to the drainage portion 32 reacts with the alkali component or hypochlorite compound in the electrolytic water, and the fat component can be removed before adhering to the drainage portion 32 as white foreign matter, so that the appearance is impaired. ,
The drainage channel 31 will not be clogged, and the user will not feel uncomfortable even when touching this part when cleaning it.

In this embodiment, the transport means has a flow path 15 for tap water which is indirectly or directly connected to a water pipe, and a valve 16 for controlling the flow of tap water. After the electrolytic water generated in the electrolytic cell 11 is fed into the flow channel 15 or after the detergent is fed by the detergent pump 19, the electrolytic water and the detergent remaining in the flow channel 15 are washed away with tap water and left in the flow channel 15. Therefore, deterioration of the flow channel 15 due to electrolyzed water or detergent can be minimized, and at the same time, the material to be treated (the drain port 28, the trap 2
9, the electrolytic water and the detergent do not remain in the basket 30, the drainage channel 31) for a long time, and the deterioration of these materials can be minimized.

In this embodiment, the electrodes 9 and 10 of the electrolytic cell 11 are energized to generate electrolyzed water by electrolysis, and the electrolyzed water containing a hypochlorite compound at a constant concentration is always generated. Since it is possible, the concentration does not decrease due to being left for a long time unlike the medicine, the concentration of the hypochlorite compound can be kept constant, and the sterilizing and deodorizing performance can be stabilized. However, when the chlorine ion concentration in the raw water to be supplied is low, the concentration of the hypochlorite compound that can be generated by electrolysis is low, and sufficient sterilization and deodorizing ability cannot be obtained. Salt tank 12, salt channel 1
3. Since a salt pump 14 is provided and the concentration of chloride ions in the electrolytic cell 11 is kept at a certain level or more, if the amount of current flowing between the electrodes 9 and 10 is kept constant, the concentration of electrolyzed water generated by electrolysis will be kept constant. , And stable sterilization and deodorizing ability can be obtained.

(Embodiment 2) FIG. 3 shows Embodiment 2, which is different from Embodiment 1 in that instead of the detergent tank 17, the detergent flow path 18, and the detergent pump 19, an enzyme is used as an oil and fat decomposer for decomposing oil and fat. It has a decomposing agent tank 33 for storing lipase, a decomposing agent pump 34, and a decomposing agent flow path 35. By decomposing oils and fats by the action of enzymes, the oils and fats attached to the drainage part 32 are removed, and the generation of saponified substances This is to prevent solidification of fats and oils.

The components having the same reference numerals as in the first embodiment have the same structure, and the description will be omitted.

Next, the operation and action will be described. After the sterilization of the drainage section 32 by the electrolytic water, the control means 23 starts the decomposing agent pump 34 so that the lipase in the decomposing agent tank 33 is removed from the decomposing agent flow path 35 through the flow path. 15 and discharged from the flow path end 20 to remove oils and fats adhering to the drainage section 32, thereby preventing generation of saponified substances and solidification of the oils and fats. By using an enzyme as a decomposing agent, it is possible to reduce the environmental load as compared with the case where a surfactant is used, and to surely remove fats and oils. Further, since the enzyme is used, the decomposition reaction of fats and oils occurs continuously, so that the fats and oils can be effectively removed.

In this example, lipase was used as a decomposing agent, but in addition to enzymes such as lipase, for example,
The use of a weak alkali such as sodium percarbonate or a strong alkali such as sodium hydroxide makes it possible to completely remove fats and oils.

(Embodiment 3) Embodiment 3 will be described with reference to FIG. The difference from the first embodiment is that a diaphragm 36 is provided between the electrodes 9 and 10, and a flow path switching valve 39 is provided downstream of the electrolytic cell 11.
And the flow paths 40, 41, and 42. Then, an acidic electrolyzed water is generated in the electrolysis tank 11, and the drainage portion 32 is sterilized and deodorized using the generated electrolyzed water. That is, the diaphragm 36 having material permeability is arranged between the electrodes 9 and 10. On the upstream side of the electrolytic cell 11, a compartment A formed by the electrode 9 and the diaphragm 36 and the channel 15 are connected by a channel 37, while a compartment formed by the electrode 10 and the diaphragm 36. B and the channel 15 are connected by a channel 38. further,
Downstream of the electrolytic cell 11, a flow path 15A and a flow path switching valve 39 are provided.
Is provided, and the compartment A and the flow path switching valve 39 are connected to the flow path 40.
Further, the compartment B and the flow path switching valve 39 are connected by a flow path 41. In addition, a flow path 42 is connected to the flow path switching valve 39, so that unnecessary electrolytic water outside the sterilization apparatus 8 can be discarded.

The components having the same reference numerals as in the first embodiment have the same structure, and a description thereof will be omitted.

Next, the operation and operation will be described.
By opening the valve 16 at 3, the tap water flows through the flow path 15, the flow path 3
7 and 38, and enter into the compartment A and the compartment B in the electrolytic cell 11. Thereafter, by starting the salt pump 14, the compartment A,
The chlorine ion concentration in B is kept at a constant level. By supplying electricity to the electrodes 9 and 10 in this state, electrolyzed water containing a hypochlorite compound in the compartment A and having a pH of 3 or less is generated in the compartment A, and sodium hydroxide is contained in the compartment B containing pH. Is 11 or more.

Next, when sterilizing and deodorizing the drainage section 32, the flow path switching valve 39 is switched so that the electrolytic water in the compartment A is
The water is supplied to the drainage section 32 from the flow path end 15B through the flow path 15A. That is, by electrolyzing water containing chlorine ions using the electrode 9 as an anode, electrolyzed water containing a hypochlorite compound and hydrochloric acid can be generated in the water in the compartment A, and the pH is 3.0. It becomes below. When the valve 16 is opened in the same manner as in the first embodiment, the electrolytic water in the compartment A in the electrolytic cell 11 is discharged through tap water, and the drainage portion 32 is sterilized and deodorized.
Even when oils and fats adhere to the surface of the drainage section 32, no saponification reaction occurs, so that no white foreign matter (solid matter) is generated.

However, there is a case where the fats and oils are large and the fats and oils are solidified on the surface of the drainage section 32. Assuming such a case, after supplying the electrolytic water to the drain 32, for example, in the case of the first embodiment, the control unit 23 opens the valve 16,
By feeding a neutral detergent from the detergent tank 17 by the detergent pump 19, discharging the neutral detergent from the flow path end 15B, and bringing the detergent into contact with the drainage part 32, oils and fats attached to the surface can be removed. Therefore, since the appearance is not impaired, the user can comfortably clean the drainage section 32.

(Embodiment 3) FIG. 4 shows a sterilization apparatus according to Embodiment 3 of the present invention. The third embodiment is different from the first embodiment in that a hot water supply device 43 that can supply hot water is provided upstream of the flow path 15 as hot water supply means.

The components having the same reference numerals as those of the first embodiment have the same structure, and the description is omitted.

Next, the operation and operation will be described.
After supplying electrolyzed water to the drain 32 for sterilization and deodorization, the valve 16 is opened and hot water at a predetermined temperature is supplied from the water heater 43 to the drain 32. Although fats and oils adhere to the surface of the drainage section 32, the fats and oils are separated and removed by the surface activity of warm water, so that no saponified product or solidified product is generated. Therefore, since the appearance is not impaired, the user can comfortably clean the drainage section 32. Furthermore, since it is hot water, there is no contamination of organic matter into wastewater,
It does not result in environmental load.

In this embodiment, the temperature of the hot water is 40
By supplying warm water in a temperature range of from 0 to 70 ° C, an effect of removing fats and oils could be obtained. The higher the temperature of the hot water, the higher the removal effect, and at 50 ° C. or higher, the occurrence of solidification of saponified products and fats was small.

In the first to third embodiments, the conveying means may be arranged so that the substances supplied from the sterilizing means and the foreign matter removing means can be supplied to the sink, the top plate and the cooking utensil storage of the sink. .

In the first to third embodiments, the drainage part 3
Although the configuration is such that the electrolyzed water is supplied from the upper side of 2, since it is sufficient that the electrolyzed water and the grease-removing substance can be supplied to a target location, the trap 29 should be locally sterilized and deodorized. 20 to 15
B may be connected, and flow path 1 is used to eliminate sterilization unevenness.
5 may be branched and a plurality of flow path ends 20 to 15B may be provided and connected to the trap 29.

[0050]

As described above, according to the sterilizing apparatus of the first aspect of the present invention, the growth of microorganisms is suppressed, and at the same time, the solidified fats and oils and the saponified substances adhere to the solid surface, and the oily odor is generated. This has the effect that the clogging of the drainage port can be eliminated without damaging or deteriorating the appearance.

Further, according to the sterilization apparatus of the second aspect,
Since water is supplied by the transport means, these substances can be washed away with water at the same time as sterilization and foreign matter removal processing, solutes contained in the germicidal substance and foreign matter removing substance are precipitated by drying, and the appearance is improved. There is an effect that the object to be sterilized and cleaned can always be kept clean without being damaged.

[0052] According to the sterilization apparatus of the third aspect,
Since it is configured to obtain electrolyzed water by electrolyzing water with electrolyzing means, it is possible to always generate electrolyzed water containing a constant hypochlorite compound, and to reduce concentration or deterioration due to time change like chemicals There is an effect that the sterilization performance does not decrease.

Further, according to the sterilization apparatus of the fourth aspect,
Since acidic electrolyzed water is generated by the electrolyzing means and sterilization and deodorization can be performed by this, no saponified product is generated by sodium hydroxide and the appearance is not impaired.

Further, according to the sterilization apparatus of the fifth aspect,
Since the electrolysis means has a chlorine ion supply means capable of supplying chloride ions, the concentration of hypochlorous acid generated by supplying chlorine ions with the chlorine ion supply means and performing electrolytic decomposition is kept constant. Thus, there is an effect that stable sterilization performance can be obtained.

Further, according to the sterilizing apparatus of claim 6,
Since the substance supplied from the foreign matter removing means is used as a surfactant, oils and fats attached to the solid surface are removed, and the hypochlorite compound or sodium hydroxide generated by electrolysis reacts with the oil and fats on the solid surface. And the solid surface can be kept clean.

Further, according to the sterilizing apparatus of claim 7,
Since the fats and oils attached to the surface of the object are removed with warm water,
Sterilization and deodorization with low environmental load are possible.

In the sterilization apparatus according to the eighth aspect, since the fats and oils on the surface of the object are decomposed and removed by the fat and fat decomposing agent, the solid surface can be reliably kept in a clean state.

[Brief description of the drawings]

FIG. 1 is a configuration diagram of a sterilization apparatus according to a first embodiment of the present invention.

FIG. 2 is a schematic view of a sink provided with a sterilizing apparatus according to the first embodiment.

FIG. 3 is a configuration diagram of a sterilization apparatus according to a second embodiment of the present invention.

FIG. 4 is a configuration diagram of a sterilization apparatus according to a third embodiment of the present invention.

FIG. 5 is a configuration diagram of a conventional sterilization apparatus.

[Explanation of symbols]

 Reference Signs List 8 Sterilizer 9, 10 Electrode 11 Electrolyzer 12 Salt tank 13 Salt channel 14 Salt pump 15 Channel 16 Valve 17 Detergent tank 18 Detergent channel 19 Detergent pump 23 Controller

──────────────────────────────────────────────────の Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI theme coat ゛ (Reference) C02F 1/50 520 C02F 1/50 520Z 531 531M 540 540B 550 550D 560 560F (72) Inventor Tomohide Matsumoto Osaka Prefecture 1006 Kadoma Kadoma, Matsushita Electric Industrial Co., Ltd. DB07 DB10 EA02 EB12 4H011 AA02 BA01 BB18 BC18 DA13 DD01

Claims (8)

[Claims] 1. A sterilizing means for supplying a substance capable of suppressing the growth of microorganisms, and a substance capable of suppressing removal or generation of foreign substances formed on the solid surface such as fats and oils or saponified substances adhered to the solid surface. A sterilization apparatus having a foreign matter removing means and a transporting means capable of transporting these substances to a site to be subjected to sterilization and foreign matter removal. 2. The conveying means includes: a water supply means capable of supplying water;
2. A device having a flow path through which water supplied from the water supply means can pass, and supplying a substance supplied from the sterilizing means and the foreign matter removing means to a portion to be sterilized and foreign matter removed through the water. The disinfection device according to the above. 3. The sterilizing apparatus according to claim 1, wherein the sterilizing means has at least one pair of electrodes therein and is capable of generating electrolyzed water by electrolyzing water. 4. The sterilizing apparatus according to claim 3, wherein the electrolysis means is provided with a diaphragm so as to be able to separate and generate acidic electrolyzed water and alkaline electrolyzed water. 5. The sterilizing apparatus according to claim 3, further comprising a chlorine ion supply means capable of supplying chlorine ions to the electrolysis means. 6. The sterilizer according to claim 1, wherein the substance supplied from the foreign matter removing means is a surfactant. 7. The sterilizer according to claim 1, wherein the substance supplied from the foreign matter removing means is hot water. 8. The sterilizing apparatus according to claim 1, wherein the substance supplied from the foreign matter removing means is a fat and oil decomposing agent.