WO2000056854A1

WO2000056854A1 - Detergent for automotive air conditioner and method of cleaning automotive air conditioner

Info

Publication number: WO2000056854A1
Application number: PCT/JP1999/003758
Authority: WO
Inventors: Yoshiumi Hamada; Jiro Kakumoto
Original assignee: Nissin Medico Co., Ltd.
Priority date: 1999-03-19
Filing date: 1999-07-09
Publication date: 2000-09-28
Also published as: AU4651199A

Abstract

A detergent for automotive air conditioners which comprises water as the base, a surfactant, and a liquefied gas as an aerosol propellant and has been packaged in a container fitted with a jet nozzle. The detergent contains a volatile alkaline substance. It is alkaline before volatilization of the alkaline substance and becomes neutral upon volatilization thereof. When the detergent is ejected through a detergent injection tube attached to the jet nozzle, it comes into a mousse-like state and then becomes liquid within a period of from one to ten minutes thereafter.

Description

Description Cleaning agent for automotive air conditioners and cleaning method for automotive air conditioners

The present invention relates to a cleaning agent for a vehicle air conditioner, particularly to a cleaning agent effective for cleaning an evaporator of a vehicle air conditioner and a cleaning method for a vehicle air conditioner, particularly to a cleaning method effective for cleaning an evaporator of a vehicle air conditioner. Background art

There are two types of automotive air conditioners, depending on the location of the fan and evaporator. In the first type of air conditioner, a blower fan is located downstream of the evaporator, and the fan draws air through the evaporator and exhausts it downstream of the fan. In the second type of air conditioner, a blower fan is located upstream of the evaporator, and the air sent by the blower fan is exhausted through the evaporator. The latter type has an evaporator downstream of the fan, so the distance from the air intake to the evaporator is long, making it difficult to inject the cleaning agent from the air intake. For this reason, it was common to drill holes in a part of the housing of the air conditioner and inject a cleaning agent. (For example, JP-A-9-15939382)

Japanese Patent Application Laid-Open No. H10-185493 discloses a method of injecting a cleaning agent without making a hole in a part of the housing of the air conditioner as described above. The method disclosed in Japanese Patent Application Laid-Open No. H10-1854853 It is not necessary to make a hole in a part of the air conditioner housing as described above, but to connect the device, connect it to the air vent opening on the exhaust side (downstream side) of the fan. It is necessary to remove the blower tube for sending cooling air to the motor of the fan, and to connect a cleaning device to the opening for the blower passage. For this reason, cleaning work was not easy.

An object of the present invention is to provide a cleaning agent for an automobile air conditioner and a method of cleaning an automobile air conditioner, which can wash the evaporator to some extent and can perform the washing operation extremely easily. M Disclosure of the invention

The cleaning agent for an automotive air conditioner according to the present invention is based on water, contains a surfactant, and a liquefied gas for aerosol, and is a cleaning agent for an automotive air conditioner evaporator sealed in a container with a spray nozzle. The cleaning agent includes a cleaning agent injection tube connected to or connected to the spray nozzle, and further, the cleaning agent is in a mousse state when discharged from the tube, It liquefies within 1 minute or more and within 10 minutes.

Further, the cleaning agent for an automobile air conditioner of the present invention is based on water, contains a surfactant, and a liquefied gas for aerosol, and is an evaporator for an automobile air conditioner sealed in a container with an injection nozzle. A detergent, which contains a volatile alkaline substance, exhibits an alkaline property before volatilization of the alkaline substance, and becomes neutral after the alkaline substance is volatilized. A cleaning agent, further comprising: a cleaning agent injection tube connected to or connected to the spray nozzle; 3 is a mousse when discharged from the tube, and liquefies within 1 minute or more and within 10 minutes.

Further, the method for cleaning an automobile air conditioner according to the present invention includes an evaporator for an air conditioner, a blower fan provided on an upstream side of the evaporator, and intake of outside air and vehicle air provided on an upstream side of the blower fan. A method of cleaning an automobile air conditioner performed on a vehicle having a passage, wherein the vehicle is in a state of taking in outside air, and the blower fan is operated, and a cleaning agent is injected into the air intake passage. A mousse that is liquefied after a predetermined time from the cleaning agent injection tube after the steps of inserting the tube, activating the blower fan, and inserting the cleaning agent injection tube into the air intake passage. A predetermined amount of the cleaning agent is injected into the evaporator, and the injected mousse cleaning agent is supplied to the evaporator by the blowing fan. The method includes a step of feeding and attaching a mousse-like cleaning agent to the evaporator, and a step of causing a liquefied substance of the cleaning agent to flow out of a drainage port provided near the evaporator.

In addition, the method for cleaning an air conditioner of a vehicle according to the present invention includes an evaporator for an air conditioner, a blower fan provided on an upstream side of the evaporator, an outside air provided on an upstream side of the blower fan, and an inside of the vehicle. A method of cleaning an automobile air conditioner performed on a vehicle having an air intake passage, wherein the vehicle is brought into an inside air intake state and the blowing fan is operated; After the step of inserting a tube for injecting, the step of operating the blower fan, and the step of inserting the tube for injecting a cleaning agent into the air intake passage, a mousse-like material that liquefies after a predetermined time has passed from the tube for injecting a cleaning agent. A predetermined amount of detergent is injected, and the injected mousse-like detergent is removed by the blower fan. Is attached is sent to the motor, a mousse detergent to the evaporator And a step of causing a liquefied product of the cleaning agent to flow out from a drain port provided near the evaporator. BRIEF DESCRIPTION OF THE FIGURES

FIG. 1 is a front view showing an embodiment of the cleaning agent for a vehicle air conditioner of the present invention.

FIG. 2 is an explanatory diagram of a nozzle used in the cleaning agent for an automobile air conditioner of the present invention.

FIG. 3 is an explanatory diagram of a nozzle used in the cleaning agent for an automotive air conditioner of the present invention.

FIG. 4 is an explanatory diagram of a nozzle used in the cleaning agent for an automobile air conditioner of the present invention.

FIG. 5 is an explanatory diagram of a nozzle used in the cleaning agent for an automobile air conditioner of the present invention.

FIG. 6 is an explanatory diagram of a method for cleaning an automobile air conditioner according to the present invention.

FIG. 7 is an explanatory diagram of a method for cleaning an automobile air conditioner according to the present invention.

FIG. 8 is an explanatory diagram of a method for cleaning an automobile air conditioner according to the present invention.

FIG. 9 is an explanatory diagram of a method of cleaning a car air conditioner according to another embodiment of the present invention.

FIG. 10 is an explanatory diagram of a method for cleaning an automobile air conditioner according to another embodiment of the present invention.

FIG. 11 is an explanatory view of a method for cleaning an automotive air conditioner according to another embodiment of the present invention. BEST MODE FOR CARRYING OUT THE INVENTION

The cleaning agent for an automotive air conditioner of the present invention will be described with reference to the drawings.

The cleaning agent 1 for an automobile air conditioner of the present invention is based on water, contains a surfactant, and a liquefied gas for aerosol, and is used for cleaning an evaporator of an automobile air conditioner sealed in a container with a spray nozzle. Agent. The cleaning agent 1 is connected to the injection nozzle 3 or includes a cleaning agent injection tube 5 connected thereto. The cleaning agent is configured to be in a mousse state when discharged from the tube, and to be liquefied within 1 minute or more and within 10 minutes. Liquefaction refers to the state of being visually liquid, and may contain some air bubbles. The automotive air conditioner detergent of the present invention is also a detergent for an evaporator of an automobile.

The cleaning agent filled in the container is a mousse-like cleaning agent and is configured to be liquefied within 1 minute and within 10 minutes. It comes into contact with the shock absorber passage, fan, evaporator, etc., and it becomes liquid after washing them, especially the evaporator, and can flow out from the drain port, so there is no need to wash off the detergent.

As shown in Fig. 1, the cleaning agent enclosed in the container with the injection nozzle is connected to the container body 2, the injection nozzle 3, and the cleaning agent injection tube 5 connected to or connected to the nozzle tip 4 of the injection nozzle. And a cleaning agent sealed in the container body.

The composition of the cleaning agent enclosed in the container body of the present invention will be described. The cleaning agent uses water as a base material, and contains a surfactant and a liquefied gas for aerosol. Mousse refers to a foamy state containing fine air bubbles.The degree of moussing of the cleaning agent is such that the specific gravity after discharge into an open space is 0. 0 "! ~ 0.07, preferably about 0.02 ~ 0.05. The time from the mousse state to liquefaction is 1 ~ 1. If it is more than 1 minute, it will not be liquefied in a short time, so it will not be discharged from the rainwater or other discharge outlet provided in the air intake passage, and to some extent If the time is less than 10 minutes, the cleaning work time is not too long and the burden on the fan of the air conditioner is small. Particularly, the time is preferably 2 to 8 minutes. Further, it is preferably 2 to 7 minutes.

As the surfactant, a nonionic surfactant is suitable. The concentration of the surfactant in the detergent is 0.1 to 5% by weight, and the concentration of the surfactant in the detergent components excluding the liquefied gas for aerosol is 0.1 to 5% by weight. Preferably, it is 0.3-2 weight ⁰ / o.

Any nonionic surfactant may be used, but polyoxyethylene alkylphenyl ethers having an alkyl group such as octyl, nonyl, dodecyl, etc., octyl, lauryl, cetyl, sparyl, and oleyl. Polyoxyethylene alkyl ethers having an alkyl group such as polyethylene glycol fatty acid esters such as monoester of oleic acid, monoester of stearic acid, diester of stearic acid and monoester of lauric acid, lauryl and saryl Polyoxyethylene alkylamines having an alkyl group such as oleyl, polyoxyethylene sorbitan monolaurate, polyoxyethylene sorbitan monopalmitate, polyoxyethylene sorbita Polyesters such as monostearate, polyoxyethylene sorbitan trisperinate, polyoxyethylene sorbitan monooleate, polyoxyethylene sorbitan trioleate, and coconut fatty acid polyoxetylene sorbitan Xylene Fatty acid diethanolamides such as sorbitan fatty acid esters, polyethylene glycol ethers, diethanolamide diphosphate, sucrose fatty acid esters, fatty acid monoglycerides such as lauric acid monoglyceride, suaric acid monoglyceride, oleic acid monoglyceride Sorbitan monolaurate, sorbitan monopalmitate, sorbitan monostearate, sorbitan distearate, sorbitan tristearate, sorbitan monoureate, sorbitan trioleate, etc. , Polyoxyethylene lauric amide, polyoxyethylene sulamide, polyoxyethylene oleic acid Polyoxyethylene fatty acid amides such as mid, polyoxyethylene castor oil, and polyoxyethylene hydrogenated castor oil can be used.

Particularly, polyoxyethylene alkyl phenyl ethers, polyoxyethylene alkyl ethers, polyoxyethylene sorbitan fatty acid esters, and polyoxyethylene castor oil are preferable, and a mixture thereof is particularly preferable. In particular, polyoxyethylene alkylphenyl ethers, polyoxyethylene alkyl ethers, or a mixture of polyoxyethylene castor oil and polyoxyethylene sorbitan fatty acid esters are preferred. Specifically, a combination of polyoxyethylene alkyl ether (especially polyoxyethylene lauryl ether) and coconut fatty acid polyoxyethylene sorbitan, polyoxyethylene castor oil and polyoxyethylene sorbitan monolaurate, polyoxyethylene alkyl ether (Especially, a combination of polyoxyethylene lauryl ether) and polyoxyethylene sorbitan monolaurate is preferred. Also, amphoteric surfactants such as betaine-type amphoteric surfactants such as carboxybetaine, sulfobetaine and betaine acetate, and imidazoline-type amphoteric surfactants Sexual agents may be used.

An oil component may be contained in the detergent component. As the oil component, limonene isoparaffin hydrocarbon oil is preferable. When limonene is contained, the concentration is 0.1 to 2% by weight, and preferably, 0.5 to 1.5% by weight. As the limonene, any of orange oil (D-limonene), dipentene and the like can be used, but orange oil is preferable because it has an aroma for orange peel. An isoparaffinic hydrocarbon oil may be contained in the detergent component. When isoparaffinic hydrocarbon oil is contained, the concentration is 0.1 to 2% by weight, and preferably <0.5 to 1.5% by weight.

Isoparaffinic hydrocarbon oils that are liquid at room temperature are used. Usually, those having about 7 to 15 carbon atoms are used. Isoparaffinic hydrocarbon oil is a hydrocarbon oil produced by polymerizing monoolefin gas having 3 to 5 carbon atoms and adding hydrogen to unsaturated bonds. So-called oils, such as limonene and isoparaffinic hydrocarbon oils, have the effect of adhering to metal surfaces to float dirt, and the effect of defoaming surfactant foam. Furthermore, both (particularly, isoparaffinic hydrocarbon oils) exert a protective effect on the metal surface after cleaning.

As lower alcohols, methyl alcohol, ethyl alcohol, ethylene glycol, and cellosolve solvents are used. Alternatively, ethyl alcohol and ethylene glycol, or <may be a mixture of ethyl alcohol and cellosolve. Ethylene glycol and cellosolve have the effect of increasing the viscosity of the detergent composition to increase the detergency, and the effect of improving the dispersibility of the detergent composition and the liquefied gas for aerosol. Examples of cellosolve include ethylene glycol monobutyl ether, ethylene glycol monoethyl ether, and ethylene glycol monomethyl ether. Ethylene glycol monobutyl ether is particularly preferred. Thus, the most preferred lower alcohols are mixtures of ethylene glycol and ethylene glycol monobutyl ether. Ethyl alcohol improves the affinity between limonene, an oil component, isoparaffinic hydrocarbon oil, and surfactants.

The pH of the cleaning agent containing the liquefied gas for aerosol and the pH of the cleaning composition excluding the liquefied gas for aerosol are 6 to 8, and preferably 6.5 to 7.5. Therefore, since the detergent is almost neutral, there is no adverse effect on the working environment and users, and metal corrosion after cleaning is extremely low.

The detergent composition excluding the liquefied gas for aerosol is adjusted by adding a predetermined amount to each of the water to the above-mentioned concentrations. Specifically, 0.1 to 5 parts by weight (preferably, 0.3 to 2 parts by weight) of a nonionic surfactant, 100 to 100 parts by weight of water, and 5 to 30 parts by weight of lower alcohols are used. It is adjusted by adding and mixing parts by weight (preferably 10 to 25 parts by weight, specifically, 5 to 30 parts by weight of ethyl alcohol). Furthermore, if necessary, 0.1 to 5 parts by weight of limonene (preferably <1.5 to 3 parts by weight), 0.1 to 5 parts by weight of isoparaffinic hydrocarbon oil (preferably 5 to 5 parts by weight) ~ 12 parts by weight).

If necessary, a pH adjuster may be added to the detergent composition. Examples of the pH adjuster include alkali metal compounds such as sodium and potassium, alkanolamines such as monoethanolamine, diethanolamine, and triethanolamine, and alkaline substances such as aqueous ammonia. used.

Further, if necessary, a fungicide may be added. As the fungicides, thiazolyl sulfamide compounds, 2- (4-thiazolyl) benzene Zimidazole (TBZ) can be used. As the thiazolyl sulfamide compound, it is preferable to use “NACS” series manufactured by Japan Applied Chemical Industry Co., Ltd. Among them, use “NA-1” which is a powder. Is preferred. The amount of the fungicide to be added is preferably 0.02 to 1.0 part by weight (preferably 0.05 to 0.5 part) with respect to 100 parts of the detergent.

Further, an antibacterial agent may be added. Examples of the antibacterial agent include inorganic silver-based antibacterial agents. Specifically, antibacterial agents in which a trace amount of silver ions are bonded to phosphate-based ceramics Ceramics can be mentioned. The compounding amount of the antibacterial agent is 1.0 to 3.0 parts (preferably 1.0 to 1.5 parts) with respect to 100 parts of the total amount of the polar solvent and the fungicide. I do. By adding an antibacterial agent, it is possible not only to mold but also to provide resistance to bacteria.

As the container for the cleaning agent of the present invention, a conventional can for aerosol, a can made of aluminum or a can made of aluminum is used, and the capacity is preferably about 150 to 300 mI. It is.

Then, the detergent composition excluding the liquefied gas for aerosol prepared as described above is filled in a container, and an aerosol button is attached to an opening of the container to seal the container. Then, the liquefied gas for nozzle aerosol of the button is injected into the container filled with the cleaning composition.

As liquefied gas for aerosol, liquefied petroleum gas (LPG), dimethyl ether (DME), nitrogen gas, carbon dioxide gas, chlorofluorocarbon 134a or a mixture thereof can be used. It is also preferable to use Freon 134a, carbon dioxide gas and nitrogen gas because they have the property of being difficult to burn. As the mixture, a mixture of LPG and DME, a mixture of LPG and carbon dioxide, and the like can be used. As liquefied petroleum gas, liquefied propane gas, Liquefied butane gas, liquefied pentane gas and the like are used. In particular, a mixture of liquefied propane gas and liquefied butane gas is preferable because a high internal pressure can be formed. The liquefied gas for aerosol is added such that the amount of the detergent containing the liquefied gas for aerosol is 3 to 20% by weight, preferably 5 to 10% by weight, and the water temperature is 35 ° C. of the internal pressure in the container in immersion mashed state bathtub, 4 kgcm ² or more (. 4 to 7 kg Roh cm ^2), preferably, a 4. 5 kg / cm ² or more (4. 5~ 7 kgcm ²⁾ _(The injection nozzle is attached to the nozzle of the button of the container into which the liquefied gas for aerosol is injected as described above. The injection nozzle is called a so-called full injection nozzle. Nozzles with a function of maintaining the injection state are used.

By using a nozzle having such an injection state maintaining function, it is possible to easily and continuously inject the entire amount or an arbitrary amount of the cleaning agent in the container. In particular, in the cleaning agent of the present invention, it is necessary to discharge a certain amount of the cleaning agent into the air intake passage in a mousse state within a certain time, and to fill the passage with the mousse. Then, by filling the passage with the mousse-like cleaning agent, the mousse-like cleaning agent is carried to the fan by the force of the fan and sent to the evaporator. Therefore, it is necessary to discharge the cleaning agent of the present invention at once, instead of intermittently. The use of a nozzle having such a jetting state maintaining function facilitates this.

The nozzle having a spray state maintaining function used in the cleaning agent 1 of this embodiment will be described with reference to FIGS.

As shown in FIG. 2, the nozzle 3 has a cylindrical member 36 fixed to the container body so as to surround the azole button 21 fixed to the opening of the container body 2, and a lower end of the cylindrical member 36. Of the button 2 1 A nozzle body 32 having a passage 33 that can communicate with the cleaning agent discharge port is provided. The nozzle body 32 has a nozzle tip 4 projecting obliquely upward and communicating with the passage 33, and two opposed ribs 3 7 provided on the lower end side surface of the nozzle body 32 (in FIG. (Only one is shown). As shown in FIGS. 3 and 4, on the inner surface of the cylindrical member 36, a concave portion 38 for accommodating the rib 37 of the nozzle body 32 and a lower portion of the rib 37 are provided. It is provided with a locking portion 35 for preventing the lowering of the arm. In a normal state, the nozzle body 32 does not descend because the bottom surface of the rib 37 comes into contact with the upper surface of the locking portion 35. At the time of the injection work, the rib 3 of the nozzle body 32 is pushed over the locking portion 35 of the tubular member 36 by pressing the nozzle body 32 downward strongly, and is formed at the lower part of the tubular member 36. Into the cam groove forming space 39. As shown in FIG. 4, the upper surface of the cam groove forming space 39 forms a spiral cam groove 40 in which the lower portion of the locking portion 35 is highest and gradually lowers. For this reason, when the nozzle main body 32 in the state of invading the cam groove forming space 39 formed in the lower part of the cylindrical member 31 is rotated in the direction of the arrow as shown in FIG. 5, the nozzle main body 32 becomes It gradually descends, and finally the actuator 22 of the button 21 is pushed down, and the cleaning liquid is discharged. In the state where the cleaning liquid is discharged, the nozzle body 32 is pushed from below the actuator 22 and the two ribs 3 are in contact with the cam grooves 40. Is maintained. If left as it is, the discharge state is maintained until all the cleaning liquid in the container body 2 is discharged. A cleaning agent injection tube 5 is attached to the tip of the nozzle tip 4 as shown in FIG. The tube 5 may be fixed to the nozzle or detachable. Further, the tube 5 is preferably a flexible tube. In addition, a tube whose tip can be inserted at least into the air intake passage of the vehicle is used. Car air The opening of the intake passage is usually provided near the wiper fixing part or inside the bonnet, especially near the wiper fixing part. When the opening of the air intake passage is provided near the wiper fixing part, a tube that can be inserted into the slit near the wiper fixing part from outside the vehicle is used. In this case, the length of the tube is preferably about 20 to 100 cm.

The tube is preferably formed of a material having a certain degree of flexibility, such as polyolefin (eg, polyethylene, polypropylene, ethylene-propylene copolymer, ethylene-vinyl acetate copolymer, etc.). polyvinyl chloride, polyamide Doerasu Tomah primary, thermoplastic resins such as polyurethane, silicone rubber, latex rubber or the like can be used, preferably above thermoplastic resin, more preferably, other automotive _c present invention is a polyolefin An air conditioner cleaning agent will be described with reference to the drawings of the above-described embodiment.

The cleaning agent for an automotive air conditioner according to the present invention is based on water, contains a surfactant, and a liquefied gas for aerosol, and is a cleaning agent for an automotive air conditioner evaporator sealed in a container with a spray nozzle. It is. The cleaning agent is connected to the spray nozzle 3 or includes a cleaning agent injection tube 5 connected thereto. The cleaning agent is a cleaning agent containing an alkaline substance having volatility, exhibiting an alkaline property before the evaporation of the alkaline substance, and becoming neutral after the evaporation of the alkaline substance. When discharged from the tube, the detergent becomes a mousse exhibiting alkalinity, and is liquefied within 1 minute or more and within 10 minutes. Liquefaction refers to a visually liquid state, and may contain some air bubbles.

The cleaning agent for automotive air conditioners filled in the container is a mousse-like cleaning agent that exhibits an alkaline property, and is not less than 1 minute and 10 minutes. Because it is configured to be liquefied within minutes, it comes into contact with the evaporator, passage, fan, etc. for a certain period of time, and after cleaning these, especially the evaporator, it becomes liquid and can flow out from the drain port. There is no need for work to wash away.

The cleaning agent enclosed in the container with the spray nozzle is connected to the container body 2, the spray nozzle 3, and the nozzle tip 4 of the spray nozzle. The composition of the cleaning agent enclosed in the container body of the present invention will be described. The cleaning agent is based on water, and contains a surfactant, a volatile alkaline substance, and a liquefied gas for aerosol. Mousse refers to a bubble-like state containing fine bubbles, and it is desirable that the degree of moussing of the cleaning agent is such that the specific gravity after being discharged into an open space is about 0.01 to 0.07. In particular, it is desirable to be about 0.02 to 0.05. It is necessary that the time required for liquefaction from the mousse state is 1 to 10 minutes. If it is longer than 1 minute, it will not liquefy in a short time, so it will not be discharged from the rainwater or other discharge port provided in the air intake passage and will adhere to the evaporator for a certain period of time. If the time is less than 10 minutes, the cleaning work time is not so long and the burden on the fan of the air conditioner is small. In particular, the time is preferably 2 to 8 minutes, and more preferably 2 to 7 minutes.

As the surfactant, a nonionic surfactant is suitable. The concentration of the surfactant in the detergent is 0.1 to 5% by weight, and the concentration of the surfactant in the detergent components excluding the liquefied gas for aerosol is 0.1 to 5% by weight. Preferably, it is 0.3 to 2% by weight.

As the nonionic surfactant, those described above can be used. In addition, betaine-type amphoteric such as lipoxybetaine, sulfobetaine, and betaine acetate An amphoteric surfactant such as a surfactant and an imidazoline-type amphoteric surfactant may be used.

As the volatile alkaline substance, ammonia water, morpholine, amino alcohol, fatty acid amine and the like can be used. By adding these to a water-based neutral detergent, the detergent can have a pH of 8 or more, particularly 9 or more, and can be made alkaline. This detergent exhibits an alkaline property before the volatilization of the alkaline substance, and thus has not only the detergency of the surfactant but also the detergency of the alkali. In addition, the cleaning agent adhering to the air passage, fan, evaporator, and the inside of the air conditioner housing becomes neutral due to volatilization of the alkaline substance over time, and remains in an alkaline state for a long time. It does not cause corrosion, etc. due to aluminum alloy.

The content of the alkaline substance is preferably in the range of about 0.01 to 3% by weight of the entire detergent, and if it is 0.1% by weight or more, the time required for the detergent to change to neutral (alkaline powder) Is not too short, and if it is 10% by weight or less, the object to be cleaned does not cause metal corrosion.

Further, the detergent may contain a pH indicator.

The PH indicator is for visually determining whether or not the cleaning agent has an alkaline property. By adding this pH indicator together with the above-mentioned alkaline substance to a neutral detergent, it is possible to confirm that the substance is in an alkaline state by exhibiting a specific color. When the water becomes volatile and becomes neutral, the color of the cleaning agent changes, so that the change to neutral can be easily discriminated.

As the pH indicator, those generally used widely as alkaline indicators can be used, such as phenolphthalein, thymol blue, phenol red, cresol red, tropeolin, and thymol. Luphthalein and the like can be mentioned. For example, when phenolphthalein is used, the color of the cleaning agent becomes reddish purple when the detergent is alkaline, but changes to colorless when the detergent becomes neutral. When thymol blue is used, the color of the detergent is blue when the detergent is alkaline, but it changes to yellow when the detergent becomes neutral. At the first glance, let the user know at a glance that the alkaline components in the detergent have volatilized and the detergent has become neutral and harmless to the touch. I can do it.

An oil component may be contained in the detergent component. As the oil, limonene and isoparaffinic hydrocarbon oil are suitable. When limonene is contained, the concentration is 0.1 to 2% by weight, preferably 0.5 to 1.5% by weight. As the limonene, any of orange oil (D-limonene), dipentene and the like can be used, but orange oil is preferable since it has an aroma for orange peel. An isoparaffinic hydrocarbon oil may be contained in the detergent component. The concentration in the case of containing an isoparaffinic hydrocarbon oil is 0.1 to 2% by weight, preferably 0.5 to 1.5% by weight.

Isoparaffinic hydrocarbon oils that are liquid at room temperature are used. Usually, those having about 7 to 15 carbon atoms are used. Isoparaffinic hydrocarbon oil is a hydrocarbon oil produced by polymerizing mono-refined gas having 3 to 5 carbon atoms and adding hydrogen to unsaturated bonds. Limonene and isoparaffinic hydrocarbon oils are so-called oil components, and exhibit the effect of adhering to metal surfaces to float dirt and the effect of eliminating bubbles caused by surfactants. In addition, both (particularly isoparaffinic hydrocarbon oils) exert a protective effect on the metal surface after cleaning.

As the lower alcohols, those described above can be used. And The PH of the detergent containing the liquefied gas for azoles and the PH of the detergent composition excluding the liquefied gas for aerosol are from 8 to 13, preferably from 9 to 11. For this reason, high detergent power can be expected because the detergent is alkaline.

The detergent composition excluding the liquefied gas for aerosol is adjusted by adding a predetermined amount to each of the water to the above-mentioned concentrations. Specifically, 0.1 to 5 parts by weight of a nonionic surfactant (preferably 0.3 to 2 parts by weight), 100 parts by weight of water, and 0.0 1 to 3 parts by weight

(Preferably 0.05 to 0.5 parts by weight), lower alcohols 5 to 30 parts by weight (preferably 10 to 25 parts by weight, specifically, ethyl alcohol 5 to 30 parts by weight) ) Is adjusted by adding and mixing. Further, if necessary, 0.1 to 5 parts by weight (preferably 1.5 to 3 parts by weight) of limonene, 0.1 to 5 parts by weight of isosparaffinic hydrocarbon oil (preferably 5 to 1 part by weight) are used. 2 parts by weight) and an appropriate amount of pH indicator are added and mixed.

If necessary, a pH adjuster may be added to the detergent composition. pH adjusters include alkali metal compounds such as sodium and potassium, alkanolamines such as monoethanolamine, diethanolamine and triethanolamine, and alkaline compounds such as ammonia water. The substance is used.

Further, if necessary, a fungicide may be added. As the fungicide, those described above can be used. Further, an antibacterial agent may be added. As the antibacterial agent, those described above can be used. As the container for the cleaning agent of the present invention, a tin can or an aluminum can, which is a usual aerosol container, is used, and the volume is preferably about 150 to 300 ml. c Then, the detergent composition except for the liquefied gas for aerosol prepared as described above is filled in the container, and the aerosol button is removed to the opening of the container. Attach and seal. Then, the liquefied gas for nozzle aerosol of the button is injected into the container filled with the cleaning composition. As the liquefied gas for aerosol, those described above can be used. The liquefied gas for aerosol is added so that the amount of the detergent containing the liquefied gas for aerosol is 3 to 20% by weight, preferably 5 to 10% by weight. pressure in the vessel in a state of being immersed in a bath of ° C is, 4 kg Z cm ² or more ^{(4~ 7 kg _ / cm 2} ), preferably, 4. 5 kgcm ² or more (4. 5 ~ 7 kg Z _C m ² ).

An injection nozzle is attached to the nozzle of the button of the container into which the liquefied gas for aerosol has been injected as described above. As the injection nozzle, a nozzle having an injection state maintenance function called a so-called full injection type nozzle is used.

By using a nozzle having such an injection state maintaining function, it is possible to easily and continuously inject the entire amount or an arbitrary amount of the cleaning agent in the container. In particular, in the cleaning agent of the present invention, it is necessary to discharge a certain amount of the cleaning agent into the air intake passage in a mousse state within a certain time, and to fill the passage with the mousse. Then, by filling the passage with the mousse-like cleaning agent, the mousse-like cleaning agent is carried to the fan by the force of the fan and sent to the evaporator. Therefore, it is necessary to discharge the cleaning agent of the present invention at once, instead of intermittently. The use of a nozzle having such a jetting state maintaining function facilitates this. As the injection nozzle, those shown in FIGS. 2 to 5 and described above are preferable.

A cleaning agent injection tube 5 is attached to the tip of the nozzle tip 4 as shown in FIG. The tube 5 may be fixed to a nozzle that can use the above-mentioned one, or may be detachable. Also, The tube 5 is preferably a flexible tube. In addition, a tube whose tip can be inserted at least into the air intake passage of an automobile is used. The opening of the air intake passage of an automobile is usually provided near the wiper fixing part or inside the bonnet, especially near the wiper fixing part. If the opening of the air intake passage is provided near the wiper fixing part, a tube that can be inserted into the slit near the wiper fixing part from outside the vehicle is used. In this case, the length of the tube is preferably about 20 to 100 cm.

The tube is preferably formed of a material having a certain degree of flexibility, such as polyolefin (eg, polyethylene, polypropylene, ethylene-propylene copolymer, ethylene-vinyl acetate copolymer, etc.). Thermoplastic resins such as polyvinyl chloride, polyamide elastomer, polyurethane, and the like, silicone rubber, latex rubber, and the like can be used. Preferably, the thermoplastic resin described above is used, and more preferably, polyolefin is used. The method of cleaning the air conditioner will be described with reference to FIGS.

The method for cleaning an automobile air conditioner according to the present invention comprises: an evaporator for an air conditioner; a fan for air provided upstream of the evaporator; and an outside air and a room air for air provided upstream of the fan for air blower. This is a cleaning method that is performed on an automobile that has a take-in passage. The method for cleaning an automobile air conditioner of the present invention is also a method for cleaning an evaporator.

According to the method for cleaning an automobile of the present invention, a step of operating the blower fan with the automobile in the outside air intake state, a step of inserting a detergent injection tube from the outside air intake port into the air intake passage, and operating the blower fan After the process and the step of inserting the cleaning agent injection tube into the air intake passage, A step of injecting a predetermined amount of a mousse-like cleaning agent that liquefies after a lapse of a predetermined time from a cleaning agent injection tube, sending the injected mousse-like cleaning agent to an evaporator by a blowing fan, and attaching the mousse-like cleaning agent to the evaporator. And a step of causing the liquefied detergent to flow out from a drain port provided near the evaporator.

Each step will be described.

First, the vehicle is brought into the outside air and the blower fan is activated. This is done by operating a switch on the air conditioner operation panel inside the car to set the car to the outside air intake mode instead of the car internal air circulation mode and to rotate the air conditioner fan. By setting the outside air intake mode, the inside door side of the intake door 51 is closed and the outside air side 52 is open as shown in FIG. The degree of rotation of the fan is not particularly limited as long as a mousse-like cleaning agent can be sucked in.However, in order not to increase the load on the fan, the degree of rotation of the switch fan is “weak” or “ Medium ”is desirable. Further, in the fan operating state, it is preferable that the air conditioner is operating the cooling function.

Next, a step of inserting a cleaning agent injection tube into the air intake passage was performed.

As described above, the opening 53, which is the outside air intake of the air intake passage 52 of the automobile, is usually provided near the wiper fixing portion or in the bonnet. There are many near the part. When the opening of the air intake passage is provided near the wiper fixing portion, the tube 5 is inserted from outside the vehicle into the slit 53 near the wiper fixing portion. This state is the state shown in FIG. Also, if the opening of the car's air (external air) intake passage is provided in the bonnet, Open the bonnet and insert the tube into the opening of the air intake passage. Either the step of operating the blower fan with the automobile in the outside air intake state or the step of inserting the detergent injection tube into the air intake passage may be performed first.

Next, a predetermined amount of a mousse-like cleaning agent that liquefies after a predetermined time has passed from the cleaning agent injection tube is injected, and the injected mousse-like cleaning agent 55 is blown by a blowing fan.

In step 50, the evaporator 54 is sent to the evaporator 54, and a step of attaching the mousse-like detergent to the evaporator is performed.

As the cleaning agent, those described above are used. Specifically, as described above, in the state of being discharged, it becomes a mousse,

It is preferable to use a detergent that liquefies within 0 minutes. As for the degree of moistening of the cleaning agent, the specific gravity after discharge into the open space is 0.01 to 0.1.

It is preferably about 0.7, and more preferably about 0.02 to 0.05.

The cleaning agent 55 discharged in a mousse shape in the air intake passage 52 fills the air intake passage as shown in FIG. However, in this state, because of the mousse state, it does not flow out from the discharge port 57 for rainwater or the like provided in the air intake passage. Then, the mousse-like cleaning agent 55 is sequentially sucked in the fan direction by the suction force of the fan 50, and after reaching the fan, is conversely sent in the direction of the evaporator 54, and after a predetermined time elapses, However, the mousse-like cleaning agent 55 adheres to the evaporator, and after the completion of the discharge of the cleaning agent, the evaporator is in a state of being covered with the mousse-like cleaning agent as shown in FIG. . In addition, some mousse-like cleaning agents adhere to passages, fans, filters, and so on. Since the detergent 55 used does not liquefy in a short time, it adheres to the evaporator 54 etc. in a mousse state for a certain period of time, and during this time, the evaporator etc. (air The inside of the conditioner) is cleaned with a cleaning agent. Then, the mousse-like detergent gradually liquefies.

Next, a step of discharging the liquefied material of the cleaning agent attached to the evaporator or the like from the drain port 56 provided near the evaporator is performed. Under normal conditions, the drain port 56 provided near the evaporator of the vehicle is open, so no special work is required for this process. As described above, the liquefied cleaning agent naturally flows out of the discharge port. If necessary, a cleaning agent receiving container may be arranged below the discharge port 56 to collect the cleaning agent flowing out.

Next, a method of cleaning a car air conditioner according to another embodiment of the present invention will be described with reference to FIGS. 9 to 11.

The method for cleaning an automobile air conditioner according to the present invention comprises: an evaporator for an air conditioner; a fan for air provided upstream of the evaporator; and an outside air and a room air for air provided upstream of the fan for air blower. This is a cleaning method that is performed on an automobile that has a take-in passage.

In addition, the method for cleaning an automobile air conditioner according to the present invention includes a step of operating a blower fan with the vehicle in an inside air intake state, and a step of inserting a cleaning agent injection tube into an air intake passage from the inside air intake port. After the step of operating the blower fan and the step of inserting the cleaning agent injection tube into the air intake passage, a predetermined amount of a mousse-like cleaning agent that liquefies after a predetermined time has passed from the cleaning agent injection tube is injected. Sending the mousse-like cleaning agent to the evaporator with a blower fan, and attaching the mousse-like cleaning agent to the evaporator; and discharging the liquefied cleaning agent from a drain port provided near the evaporator. It has.

Each step will be described.

First, set the car in the inside air intake state and activate the blower fan. Do the process. This is done by operating a switch on the air conditioner operation panel inside the car to set the car's inside air circulation mode and rotating the air conditioner fan. By setting the inside air intake mode, as shown in FIG. 9, the intake door 51 closes the outside air side 52, and the inside air side 62 opens. The degree of rotation of the fan is not particularly limited as long as the mousse-like cleaning agent can be sucked in.However, in order not to increase the load on the fan, the degree of rotation of the switch is set to “weak” or “ Medium ”is desirable. Furthermore, the fan in the operating state, then _c is preferred that one is E conditioners conditioner is operating the cooling function, the cleaning agent injected into the inside air-tri-insertion opening 6 3 from the inside air side air tri insertion passage 6 2 A step of inserting a tube for use is performed.

The opening 63, which is the inside air intake of the inside air intake passage 62 of the automobile, is usually provided below the dash pad. The tube 5 is inserted through the opening 63. Either the step of operating the blower fan with the vehicle in the inside air intake state or the step of inserting the detergent injection tube 5 into the inside air intake passage may be performed first.

Next, a predetermined amount of a mousse-like cleaning agent that liquefies after a predetermined time has passed from the cleaning agent injection tube is injected, and the injected mousse-like cleaning agent 55 is sent to an evaporator 54 by a blower fan 50, and the mousse state A step of attaching the cleaning agent to the evaporator is performed.

As the cleaning agent, those described above (neutral or alkaline) are used. Specifically, as described above, it is preferable to use a cleaning agent that becomes mousse in the discharged state and that liquefies within 1 minute or more and within 10 minutes. In addition, as for the degree of cleaning agent mass reduction, it is desirable that the specific gravity after discharge into the open space is about 0.01 to 0.07, and particularly about 0.02 to 0.07.望ましい Desirably about 5. The cleaning agent 55 discharged in the mousse shape in the inside air side intake passage 62 fills the inside air side intake passage 62 as shown in FIG. The cleaning agent 55 is sequentially sucked in the direction of the fan by the suction force of the fan 50, and after reaching the fan, is sent in the direction of the evaporator 54, and after a predetermined time has elapsed. The cleaning agent 55 that has become mousse-like to some extent adheres to the evaporator, and after the discharge of the cleaning agent, as shown in Fig. 11, the evaporator is in a state of being covered with the mousse-like cleaning agent. Become. In addition, some mousse-like cleaning agents adhere to passages, fans, and filters. Since the used cleaning agent 55 does not liquefy in a short time, it adheres to the evaporator 54 etc. in a mousse state for a certain period of time, during which the evaporator and the like (inside the air conditioner) are cleaned. Washed with an agent. Then, the mousse-like detergent gradually liquefies.

Next, a step of discharging a liquefied substance of the cleaning agent attached to the evaporator or the like from the drain port 56 provided near the evaporator is performed. Under normal conditions, the drain port 56 provided near the evaporator of the vehicle is open, so no special work is required for this step. As described above, the liquefied cleaning agent naturally flows out of the discharge port. If necessary, a cleaning agent receiving container may be arranged below the discharge port 56 to collect the cleaning agent flowing out.

(Example)

Next, specific examples of the cleaning agent for an automobile air conditioner of the present invention will be described.

(Example 1)

Water about 8 0 0 g, polyoxyethylene lauryl ether 5 g, monaural Uriru Polyoxyethylene sorbitan 5 g, ethyl alcohol ¹ 5 0 g, sodium benzoate (1 g of antibacterial agent) and 1 g of fungicide (thiazolyl sulfamide compound) to make about 1 OOO g of detergent composition,

PH was 6.5.

Then, after injecting 190 g of the above-mentioned detergent composition into a pressure-resistant tin can for aerosol (capacity: 285 ml) and sealing the can with an aerosol button, liquefied petroleum gas (liquefied propane: liquefied) Butane = 25:75) 15 g was injected, and a nozzle with an injection maintaining function having a structure as shown in Fig. 2 to Fig. 5 was attached to the pot, to produce the cleaning agent for automobile air conditioners of the present invention. did. When a small amount of this detergent was discharged onto a table, it became mousse, and the specific gravity after discharge into the open space was 0.04. The mousse almost liquefied after 3 minutes.

(Example 2)

To about 900 g of water, 20 g of polyoxyethylene lauryl ether, 5 g of polyoxyethylene sorbitan monolaurate, 50 g of ethyl alcohol, 1 g of sodium benzoate (antibacterial agent), 1 g of fungicide (thiazolylsulfuric acid) 1 g of an amide compound was added to prepare about 1000 g of the detergent composition. Then, the above-mentioned detergent composition was placed in a pressure-resistant tin can for aerosol (capacity: 285 ml). After injecting 0 g and sealing the can with an aerosol button, inject 15 g of liquefied petroleum gas (liquefied propane: liquefied butane = 25:75) and press the button, as shown in Figures 2 to 5 The nozzle having the injection maintaining function having such a structure was attached, and the detergent for an automobile air conditioner of the present invention was produced. pH was 6.5. When a small amount of this cleaning agent was discharged onto the table, it became mousse, and the specific gravity after being discharged into the open space was 0.03. The mousse almost liquefied after 7 minutes.

(Example 3)

To about 900 g of water, 20 g of polyoxyethylene lauryl ether, mono 5 g of polyoxyethylene sorbitan laurate, 50 g of ethyl alcohol, 5 g of orange oil, 5 g of isoparaffinic hydrocarbon oil (manufactured by Idemitsu Petrochemical Co., Ltd., IP 1620), 5 g of sodium benzoate (basin inhibitor) 1 g) and 1 g of a fungicide (thiazolyl sulfamide compound) were added to prepare a detergent composition of about 100 ° g. pH was 6.5.

Then, 195 g of the above detergent composition was poured into a pressure-resistant tin can for aerosol (capacity: 285 ml), and the can was sealed with an aerosol button. Then, liquefied petroleum gas (liquefied propane: liquefied butane _{= 2 5: 7 5) 1} 5 g was injected, the button, birds with the injection maintenance function Bruno nozzle structure as shown in FIGS. 2 to 5, an automobile air conditioner cleaning agent of the present invention Was prepared. When a small amount of this detergent was discharged onto a table, it became mousse, and the specific gravity after being discharged into the open space was 0.03. The mousse almost liquefied after 6 minutes.

(Experiment 1)

According to the above-described cleaning method using the cleaning agents for automotive air conditioners of Examples 1 to 3, the air conditioners of three passenger cars that had not been cleaned for two years or more were cleaned. The discharge time of the total amount of the cleaning agent in Example 1 is about 90 seconds, and after about 2 minutes, the liquefied cleaning agent starts to flow out of the drain port, and the liquefied cleaning agent that has flowed out is discharged. Collected in container. When visually observed, the liquefied detergent contained a stain component. The discharge time of the total amount of the cleaning agent in Example 2 and Example 3 was about 90 seconds, and after about 6 minutes, drainage of the cleaning liquid that had been liquefied began to flow out, and the liquefied cleaning liquid that flowed out The agent was collected in a container. Visual inspection revealed that the liquefied cleaning agent contained a stain component.

(Example 4)

About 800 g of water, 5 g of polyoxyethylene lauryl ether, monola ポリ 5 g of polyoxyethylene sorbitan acrylate, 150 g of ethyl alcohol 28 g of 8% aqueous ammonia, 3 g of phenolphthalein, 3 g of sodium benzoate (1 g of anti-honey agent), fungicide (Thiazolyl sulfamide-based compound) (1 g) was added to prepare about 1000 g of a detergent composition. pH was 10.4. In addition, pH was 6.5 with no addition of 280/0 ammonia water.

Then, after injecting 190 g of the above-mentioned detergent composition into a pressure-resistant tin can for aerosol (capacity: 285 ml) and sealing the can with an aerosol button, liquefied petroleum gas (liquefied propane: liquefied) Butane = 25:75) Inject 15 g, attach the nozzle with the injection maintaining function of the structure shown in Fig. 2 to Fig. 5 to the button, and manufacture the cleaning agent for automotive air conditioner of the present invention. did. When a small amount of this cleaning agent was discharged onto a table, it became mousse, and the specific gravity after discharge into the open space was 0.04. The mousse almost liquefied after 3 minutes.

(Example 5)

To about 900 g of water, 20 g of polyxylethylene lauryl ether, 5 g of polyoxyethylene sorbitan monolaurate, 50 g of ethyl alcohol, 1 g of 28% aqueous ammonia, 1 g of phenolphthalein 0.3 g benzoic Sanna thorium (Bosabazai) 1 g, was prepared from about 1 0 0 0 _g detergent composition fungicide (thiazolyl sulfamide type of compound) was added to 1 g. pH was 10.4. The pH was 6.5 without adding ammonia water.

Then, 195 g of the above-mentioned detergent composition was poured into a pressure-resistant tin can for aerosol (capacity: 285 mI), and the can was sealed with a button for aerosol, and then liquefied petroleum gas (liquefied propane: Inject 15 g of liquefied butane = 25:75) and press the button with a nozzle with a spray maintenance function as shown in Figs. The cleaning agent was attached, and the cleaning agent for an automobile air conditioner of the present invention was produced. When a small amount of this detergent was discharged onto a table, it became mousse, and the specific gravity after being discharged into the open space was 0.03. The mousse almost liquefied after 7 minutes.

(Example 6)

To about 900 g of water, 20 g of polyoxyethylene lauryl ether, 5 g of polyoxyethylene sorbitan monolaurate, 50 g of ethyl alcohol, 1 g of morpholine, 1 g of thymol blue, 1 g of sodium benzoate 1 g of mackerel agent and 1 g of a fungicide (thiazolyl sulfamide compound) were added to prepare about 10 g of a detergent composition. The pH was 10.6. The pH was 6.8 without addition of morpholine.

Then, 195 g of the above detergent composition was poured into a pressure-resistant tin can for aerosol (capacity: 285 ml), and the can was sealed with an aerosol button. Then, liquefied petroleum gas (liquefied propane: liquefied butane _{= 2 5: 7 5) 1} 5 g was injected, the button, attach the injection maintenance function Bruno nozzle structure as shown in FIGS. 2 to 5, making a car air conditioner cleaning agent of the present invention did. When a small amount of this detergent was discharged onto a table, it became mousse, and the specific gravity after being discharged into the open space was 0.03. The mousse almost liquefied after 7 minutes.

(Example 7)

To about 900 g of water, 20 g of polyoxyethylene lauryl ether, 5 g of polyoxyethylene sorbitan monolaurate, 50 g of ethyl alcohol, 1 g of 28% ammonia water, 0.3 g of phenolphthalein, 0.3 g of orange 5 g of dioil, 5 g of isoparaffinic hydrocarbon oil (manufactured by Idemitsu Petrochemical Co., Ltd., IP 1620), 1 g of sodium benzoate (antibacterial agent), fungicide (thiazolyl sulfamide compound) 1) Add 1 g of detergent composition about 1 O0Og was prepared. pH was 10.4. The pH was 6.5 without adding 28 o / o ammonia water.

Then, after injecting 195 g of the above-mentioned detergent composition into a pressure-resistant tin can for aerosol (capacity: 285 ml) and sealing the can with an aerosol button, liquefied petroleum gas (liquefied propane: liquefied) Inject 15 g of butane = 25 ... 75), attach a nozzle with a spray maintenance function with a structure as shown in Fig. 2 to Fig. 5 to the button, and apply the cleaning agent for automotive air conditioners of the present invention. It was made. When a small amount of this detergent was discharged onto a table, it became mousse, and the specific gravity after being discharged into the open space was 0.03. The mousse almost liquefied after 6 minutes.

(Experiment 2)

The evaporators of four passenger cars that had not been cleaned for two years or more were cleaned by the above-described cleaning method using the cleaning agents for automotive air conditioners of Examples 4 to 7. The discharge time of the total amount of the cleaning agent in Example 1 was about 90 seconds, and after about 2 minutes, the liquefied cleaning agent started to flow out of the drain port, and the liquefied cleaning agent that flowed out was discharged. Collected in container. Visual observation revealed that the liquefied detergent contained a dirt component, and upon collection of the container, the liquefied detergent, which had slightly reddish color, soon turned colorless. The discharge time of the total amount of the cleaning agent in Examples 2 and 4 was approximately 90 seconds, and after approximately 6 minutes had elapsed, the cleaning agent liquefied from the drainage port started flowing out and liquefied. The washed detergent was collected in a container. Visual observation revealed that the liquefied detergent contained dirt components, and upon collection of the container, the liquefied detergent, which had slightly reddish color, soon turned colorless. The discharge time of the entire amount of the cleaning agent of Example 3 is about 90 seconds, and after about 6 minutes, the liquefied cleaning agent starts flowing out of the drain port, and the liquefied cleaning agent that has flowed out is put into a container. Collected. Visual observation shows that the liquefied detergent contains dirt components At the time of collection, the liquefied detergent, which was slightly blue, soon turned yellow. Industrial applicability

Since the cleaning agent for an automotive air conditioner of the present invention is in a mousse state when discharged from the tube, it can be sent to the evaporator by the air blast of the fan of the air conditioner. Because it is configured to liquefy within 10 minutes, it contacts the inner surface of the air conditioner including the evaporator surface for a certain period of time to clean the evaporator, etc., and it can flow out from the drain port. The air conditioner including the evaporator can be easily cleaned without the need to wash off the cleaning agent.

Further, according to the method for cleaning an automobile air conditioner of the present invention, it is not necessary to make a hole in a part of the housing of the air conditioner, and it is not necessary to use a special device, and the air conditioner including the evaporator can be easily manufactured. Can be washed.

Claims

The scope of the claims

1. An evaporator cleaner for an automotive air conditioner containing water as a base, containing a surfactant and a liquefied gas for aerosol, and sealed in a container with an injection nozzle. A cleaning agent injection tube connected to or connected to the injection nozzle; and the cleaning agent is in a mousse state when discharged from the tube, and has a duration of one minute or more. A cleaning agent for automotive air conditioners, which liquefies within 10 minutes.

2. A cleaning agent for an automotive air conditioner, which is based on water, contains a surfactant, and a liquefied gas for aerosol, and is sealed in a container with an injection nozzle, wherein the cleaning agent is volatile. A cleaning agent that contains an alkaline substance having the following formula: exhibits alkaline properties before volatilization of the alkaline substance, and becomes neutral after volatilization of the alkaline substance. Includes a cleaning agent injection tube connected to or connected to the injection nozzle, and further, the cleaning agent is in a state of a mouse when discharged from the tube, and A cleaning agent for automobile air conditioners, which is liquefied within 10 minutes or more.

3. The cleaning agent according to claim 2, wherein the cleaning agent contains a pH indicator, and the color of the cleaning agent changes as the cleaning agent changes from alkaline to neutral due to the pH indicator. The cleaning agent for an automotive air conditioner according to the above.

4. The automotive air conditioner according to any one of claims 1 to 3, wherein the surfactant is a nonionic surfactant, and the concentration in the detergent is 0.1 to 5% by weight. Washing soap.

5. The cleaning agent contains a lower alcohol. The cleaning agent for an automotive air conditioner according to any one of the above.

6. The cleaning agent for an automotive air conditioner according to any one of claims 1 to 5, wherein the injection nozzle is an injection nozzle having an injection state maintaining function.

7. For an automobile equipped with an evaporator for an air conditioner, a blower fan provided on the upstream side of the evaporator, and a passage for taking in the outside air and the inside of the car provided on the upstream side of the blower fan. A method for cleaning an air conditioner, comprising: a step of operating the blower fan with the vehicle in an outside air intake state; a step of inserting a cleaning agent injection tube into the air intake passage; After the step of activating and after the step of inserting a cleaning agent injection tube into the air intake passage, a predetermined amount of a mousse-like cleaning agent which is liquefied after a predetermined time has passed from the cleaning agent injection tube is injected, The injected mousse-like cleaning agent is sent to the evaporator by the blower fan, and the mousse-like cleaning agent adheres to the evaporator. Degree and method of washing vehicles of the evaporator the liquid product detergent, characterized in that it comprises a step of flowing out from the drainage port was kicked set around the evaporator.

8. The method for cleaning an automobile air conditioner according to claim 7, wherein the step of attaching the mousse-like cleaning agent to the evaporator is performed in a state where the air conditioner is operating a cooling function. .

9. The method for cleaning an automotive air conditioner according to claim 7 or 8, wherein the cleaning agent for an automotive air conditioner according to any one of claims 1 to 6 is used as the cleaning agent.

10. Automatic operation performed on a vehicle having an evaporator for an air conditioner, a blower fan provided on the upstream side of the evaporator, and a passage for taking in outside air and inside of the vehicle provided on the upstream side of the blower fan. A method of cleaning an air conditioner for a car, wherein Operating the blower fan as a state, inserting a cleaning agent injection tube into the passage from the inside air intake port, operating the blower fan, and cleaning agent into the air intake passage. After the step of inserting the injection tube, a predetermined amount of a mousse-like cleaning agent which is liquefied after a predetermined time has passed from the cleaning agent injection tube is injected, and the injected mousse-like cleaning agent is removed by the blower fan. An automobile comprising: a step of sending a mousse-like cleaning agent to the evaporator to adhere to the evaporator; and a step of causing a liquefied substance of the cleaning agent to flow out of a drain port provided near the evaporator. Evaporator cleaning method.

11. The method for cleaning an automobile air conditioner according to claim 1, wherein the step of attaching the mousse-like cleaning agent to the evaporator is performed while the air conditioner is operating a cooling function. .

12. The method for cleaning an automotive air conditioner according to claim 10 or 11, wherein the cleaning agent for an automotive air conditioner according to any one of claims 1 to 6 is used as the cleaning agent.