JP2002069499A - Air conditioner washing agent and method for washing - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an air conditioner washing agent to efficiently wash and remove molds and bacteria which stick to the cloth flow fan arranged in the back part of the indoor heat exchange unit, and to provide a method of washing. SOLUTION: A viscosity modifier and a low boiling point compound (10-40 deg.C) are added to a water solution which mainly contains a surfactant, and a spray- type air conditioner washing agent which compressed nitrogen gas as an auxiliary agent to promote foaming and a jetting agent are added, is used. When the washing agent 22 is sprayed toward the front of the indoor heat exchange unit 21 of the air conditioner, a viscosity of the above mentioned washing unit 22 is adjusted to reach the rotar 23 in a liquid state from passing through each fin space of the indoor heat exchange unit 21 to the fan rotor 23 of the cloth flow fan, and the washing effect at the fan rotor 23 is enhanced by post-foaming of the medicine adjusted to show the washing effect by speedily foaming after reaching the fan rotor 23.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an air conditioner cleaning agent and a cleaning method for cleaning and removing mold and bacteria generated inside an air conditioner indoor unit (an indoor heat exchanger, a fan rotor of a cross flow fan, etc.). In particular, air conditioner detergents that adhere to the side of the fan rotor located at the back of the indoor heat exchanger and that can efficiently and reliably remove mold and bacteria that were previously difficult to remove, and use this Cleaning method.

[0002]

2. Description of the Related Art As is well known, an indoor unit of an air conditioner is provided with a gap between fins constituting an indoor heat exchanger and other components inside the air conditioner (particularly, a fan rotor of a cross flow fan) due to moisture generated by heat exchange. Mold and bacteria are easy to propagate. As described above, when the air conditioner is used in a state in which mold and bacteria are propagated, the heat efficiency of the air conditioner is deteriorated, so that not only an unnecessary electricity bill is required, but also cool air (or warm air) having a so-called moldy odor from the air conditioner outlet. Blows out indoors, which is extremely unpleasant for the user. Such a moldy and unpleasant odor of an air conditioner cannot be completely solved only by cleaning the filter.
Air conditioner cleaning is performed, for example, removing the front panel and filter to expose the indoor heat exchanger,
In order to remove mold and bacteria by removing mold and bacteria adhering in the indoor heat exchanger, a commercially available air conditioner cleaner is sprayed or sprayed from the front side of the indoor heat exchanger toward the inside.

[0003] Fig. 3 is a schematic diagram showing a conventional cleaning operation. In a conventional air conditioner cleaning method, first, a front panel and a filter are removed to expose a front surface of an indoor heat exchanger. The tip of the injection nozzle of the aerosol container 40 (sometimes referred to as a spray can) filled with a predetermined air-conditioner detergent is connected to the indoor heat exchanger 41.
Toward the front side of the foam, evenly spray foaming detergent 42,
The cleaning agent 42 reaches the front side of the indoor heat exchanger 41.
Then, the surface of the indoor heat exchanger 41 is covered with the foam 43, but after a certain period of time, the foam 43 disappears. The mold and bacteria adhering to the gaps between the fins before the defoaming of the foam are taken into the foam 43 and removed from the adhering portion, and flow down together with the cleaning agent that has become liquid again due to the disappearance of the foam, thereby washing the foam. Removed.

[0004]

However, air-conditioner detergents which have been generally used so far have relatively high viscosity and foam immediately (foam immediately after spraying). When the cleaning liquid reaches the front side of the indoor heat exchanger 41, foaming starts immediately when the cleaning liquid reaches the front side of the indoor heat exchanger 41, and the cleaning agent is deep into the gaps between a number of fins constituting the indoor heat exchanger 41. Do not penetrate. Therefore, foaming and cleaning can be performed only in the vicinity of the front surface of the indoor heat exchanger 41, and only the mold and bacteria attached to the vicinity of the front surface of the indoor heat exchanger 41 can be removed. Even if the viscosity of the air-conditioner cleaning agent is reduced somewhat to make it penetrate deep into the gaps between the fins, foaming and cleaning of the indoor heat exchanger 41 can be performed, and at most molds and bacteria generated deep inside the gaps between the fins can be removed. Stay in. As described above, according to the conventional cleaning method, the cleaning target is limited to the indoor heat exchanger 41 only, and the cleaning of the fan rotor 44 of the cross-flow fan disposed at the back side inside the indoor heat exchanger 41 is substantially performed. Therefore, mold and bacteria adhering to the fan rotor 44 side could not be subjected to foam cleaning at all, and it was difficult to remove off-flavor caused by mold and bacteria adhering to the fan rotor 44.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned disadvantages of the conventional air conditioner cleaning agent and the cleaning method, and an object of the present invention is to remove mold and bacteria by the conventional air conditioner cleaning agent and the cleaning method. It is an object of the present invention to provide an air conditioner cleaning agent and a cleaning method that can surely clean a fan rotor of a cross flow fan, which has been difficult to remove, and can efficiently clean and remove the mold and bacteria adhering to the fan rotor. is there.

[0006]

Therefore, when the air conditioner cleaning agent of the first aspect is sprayed from the front side of the indoor heat exchanger 21 of the air conditioner, it passes between the fins of the indoor heat exchanger 21 and passes through the cross flow fan. The viscosity is adjusted so as to reach the fan rotor 23 in a liquid state, and is adjusted so as to foam after reaching the fan rotor 23 to exert a cleaning effect.

According to a second aspect of the present invention, when cleaning the inside of the air conditioner, the air conditioner cleaning agent is sprayed from the front side of the indoor heat exchanger 21 and the indoor heat exchanger is not foamed. After passing through the space between the fins 21, the liquid is allowed to reach the fan rotor 23 of the cross flow fan in a liquid state, and the cleaning agent is foamed at this reaching stage to wash the fan rotor 23. Features.

According to the air conditioner cleaning agent of the first aspect and the air conditioner cleaning method of the second aspect, first, when the viscosity is adjusted, the cleaning agent is sprayed from the indoor heat exchanger 21 of the air conditioner. The liquid passed through the gap between the fins and reached the fan rotor 23 of the cross flow fan in a liquid state. And then, the fan rotor 2
After the cleaning agent reaches No. 3, the post-foaming adjustment is performed so that the above-described cleaning agent foams for the first time to exert the cleaning effect, so that cleaning mainly focused on foaming cleaning with the fan rotor 23 can be performed. Mold and bacteria adhering to the surface can be taken in the foam and efficiently washed and removed. Further, when the cleaning agent passes through the gap between the fins of the indoor heat exchanger 21, a small amount of the cleaning agent adheres to the fins and remains.
Foaming and cleaning of the indoor heat exchanger can be performed at the same time, and mold and bacteria in the indoor heat exchanger 21 can also be cleaned and removed. Further, since the fan rotor 23 can be cleaned without removing the indoor heat exchanger 21, workability is extremely high.

Further, in the air conditioner cleaning agent and the air conditioner cleaning method according to claim 3, the cleaning agent is a pH adjuster for enhancing a cleaning effect on an aqueous solution containing a surfactant.
A viscosity adjuster for adjusting the viscosity and a low-boiling compound were added and then foaming was adjusted.Furthermore, a foaming aid and an insoluble compressed gas as a propellant were added, and the mixture was filled in an aerosol container. It is characterized by having.

In the air conditioner cleaning agent and the air conditioner cleaning method according to the third aspect, the cleaning agent according to the first or second aspect is filled in an aerosol container, that is, can be easily used as an air spray, and is exclusively used for high-pressure cleaning for a trader. Since no equipment is required, it can be easily handled by housewives and children in ordinary households, and the same cleaning effect can be expected by anyone.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, specific embodiments of an air conditioner cleaning agent and a cleaning method according to the present invention will be described in detail with reference to the drawings. FIG. 1 is an explanatory diagram for explaining an operation procedure of an air conditioner cleaning method according to an embodiment of the present invention, and FIG. 2 is a configuration diagram schematically showing an air conditioner cleaning operation.

A procedure of an air conditioner cleaning method according to an embodiment of the present invention will be described with reference to FIGS. First, the front panel and the filter (both not shown) of the indoor unit of the air conditioner installed on the wall are removed to remove the indoor heat exchanger 2.
1 is exposed and the cleaning agent 22 is sprayed with the nozzle tip of the spray can 20 filled with the air conditioner cleaning agent facing the front side of the indoor heat exchanger 21 (detergent spray 1 shown in FIG. 1). The cleaning agent 22 thus sprayed is supplied to the indoor heat exchanger 2.
1 completely (passage 2 of the indoor heat exchanger shown in FIG. 1). The cleaning agent 22 that has passed through the indoor heat exchanger 21
Reaches the surface side of the fan rotor 23 of the cross flow fan (detergent arrival 3 shown in FIG. 1). The cleaning agent 22 starts foaming only after reaching the fan rotor 23 (foaming start 4 shown in FIG. 1),
Is covered with a foam 24. The foam 24 disappears when left for a certain period of time, but mold and bacteria adhering to the fan rotor in the process from foaming to defoaming are wrapped in foam and washed and removed (washing and removing 5 shown in FIG. 1). , And flows out of the air conditioner via a drain pan 25 or a drain hose (not shown). At this time, the indoor heat exchanger 21
Since a small amount of detergent adheres also between the fins, the indoor heat exchanger 21 also exhibits the same foaming to defoaming phenomena at the same timing as the foaming and defoaming on the fan rotor side, Almost at the same time as the fan rotor side, molds and bacteria generated in the gaps between the fins can be washed and removed.

When the air-conditioner detergent used in the above is sprayed from the front side of the indoor heat exchanger 21 of the air conditioner, the detergent passes through the gaps between the fins of the indoor heat exchanger 21 and reaches the fan rotor 23. It is adjusted to have a viscosity such that it can be reached in a liquid state, and is post-foamed so as to be able to exhibit a cleaning effect by foaming after reaching the fan rotor 23. Particularly, a foaming aid and an insoluble compressed gas To make it a simple air spray type.

Next, a specific example of the composition of the air conditioner cleaning agent used in the above cleaning method will be described. This air conditioner cleaning agent has, as its basic components, an aqueous solution containing a surfactant for forming foam, a PH adjuster for enhancing the cleaning effect, and a viscosity adjuster for adjusting the viscosity.
It contains a low-boiling compound for performing post-foaming, and an insoluble compressed gas as a foaming aid and a propellant, and is particularly of an air spray type filled in an aerosol container. Here, as the surfactant, for example, a cationic, anionic, nonionic, or amphoteric water-soluble surfactant, an acid or alkali as a PH adjuster, and alginic acid as a viscosity adjuster, for example. It can be selected from sodium, propylene glycol alginate, cellulose ester, carboxymethylcellulose ester, etc., which are determined in consideration of the purpose of washing, constituent materials, soil components or stability of the liquid. Further, as a foaming aid, for example, a chlorofluorocarbon compound such as HCFC-22 or HCFC-123, and as a low-boiling compound for post-foaming, for example, isopentane, normal pentane (boiling point 1)
0 to 40 ° C.), and nitrogen gas is used as the insoluble compressed gas, for example. Furthermore, the mixing ratio of each of the above-mentioned component compositions is basically from 20 to aqueous solution containing a surfactant.
80%, low boiling point compound 5 to 50%. However, the mixing ratio is not necessarily limited, and when the cleaning agent is sprayed from the front side of the indoor heat exchanger, (1) after the cleaning agent passes through the indoor heat exchanger and reaches the fan rotor. Is adjusted to a viscosity that can maintain the liquid state (preferably, less than 5 CPS at 20 ° C.). (2) The post-foaming adjustment is performed so that the cleaning agent starts foaming after reaching the fan rotor. Other mixing ratios may be used as long as the above two points can be satisfied, but it goes without saying that the mixing ratio is determined in consideration of the foaming and cleaning effect (medicinal effect) against mold and bacteria.

As described above, according to the air conditioner cleaning agent of the present invention, taking into account the two points of 1) the above-mentioned viscosity adjustment and 2) the post-foaming adjustment, the foaming and cleaning effect (medicine effect) against mold and bacteria is considered. ) Is determined in consideration of the composition, so when this detergent is sprayed from the front side of the indoor heat exchanger, after spraying, it passes through the indoor heat exchanger and reaches the fan rotor of the cross flow fan During this period, while maintaining the liquid state, foaming is started only when it reaches the fan rotor, and an effective cleaning and removing action is exerted on the fan rotor. An appropriate amount of a known disinfectant or antibacterial agent may be added to the air conditioner cleaning agent so that the growth of mold and bacteria in the fan rotor and the indoor heat exchanger after cleaning can be suppressed.

Although one embodiment of the present invention has been described above, the present invention is not limited to the aerosol type as in the above embodiment, and can be implemented with various modifications as long as the gist of the present invention is not impaired. For example, a high-pressure spraying type that can be sprayed from a high-pressure spray gun capable of high-pressure cleaning at 4 to 6 atm without adding a foaming aid or an insoluble compressed gas as a composition of the air conditioner cleaning agent may be used. It goes without saying.

[0017]

As described above, according to the air conditioner cleaning agent of the first aspect and the air conditioner cleaning method of the second aspect, when the spray is sprayed from the indoor heat exchanger of the air conditioner by adjusting the viscosity, the cleaning agent is subjected to indoor heat exchange. The liquid passed through each fin of the vessel and reached the fan rotor of the cross flow fan in a liquid state. After that, after the foam reaches the fan rotor, it is foamed for the first time so that the foaming effect can be exhibited, so that the fan rotor can be reliably foamed and washed to efficiently remove mold and bacteria. it can. In addition, since post-foaming is performed, dripping during spraying is small, and not only a large-scale liquid recovery device is unnecessary, but also relatively simple curing is sufficient. Furthermore, since the foam cleaning of the fan rotor can be easily performed without removing the indoor heat exchanger,
Workability is extremely high.

Further, according to the air conditioner cleaning agent of claim 3,
Filling the cleaning agent of claim 1 and claim 2 into an aerosol container, that is, using it as an air spray,
Since a high-pressure cleaning device for a trader is not required, the cleaning cost is low, and it is not only very easy to handle for a housewife or a child for home use, but also has the same excellent cleaning effect no matter who uses it.

[Brief description of the drawings]

FIG. 1 is an explanatory diagram for describing a work procedure of an air conditioner cleaning method according to an embodiment of the present invention.

FIG. 2 is a configuration diagram schematically showing an air conditioner cleaning operation.

FIG. 3 is a configuration diagram schematically showing an air conditioner cleaning operation.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Detergent spray 2 Passing indoor heat exchanger 3 Detergent arrival 4 Foaming start 5 Cleaning removal 20 Spray can 21 Indoor heat exchanger 22 Air conditioner detergent 23 Fan rotor 24 Foam

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat ゛ (Reference) B08B 3/10 B08B 3/10 Z F24F 1/00 F28G 9/00 M F28G 9/00 N F24F 1/00 391Z F term (reference) 3B201 AA47 AB52 BB22 BB94 CB01 3L051 BF10 4H003 BA20 DA15 DB01 EA31 EB41 EB42 ED02 ED04 ED19 FA20 FA30 4H011 AA02 AA03 BA05 BB03 BB07 BC03 BC07 DA18 DA21 DD07

Claims (3)

[Claims] When spraying from the front side of an indoor heat exchanger (21) of an air conditioner, it passes between the fins of the indoor heat exchanger (21) and passes through a fan rotor (23) of a cross flow fan.
An air conditioner cleaning agent characterized in that the viscosity of the air conditioner is adjusted so as to reach a liquid state, and is adjusted so as to foam and exhibit a cleaning effect after reaching the fan rotor (23). 2. When cleaning the interior of an air conditioner, the air conditioner cleaning agent is sprayed from the front side of the indoor heat exchanger (21), and each fin of the indoor heat exchanger (23) is foamed without foaming the cleaning agent. After passing through the gap, the liquid is allowed to reach the fan rotor (23) of the cross flow fan in a liquid state, and at this stage, the cleaning agent is foamed to wash the fan rotor (23). Characteristic air conditioner cleaning method. 3. The above-mentioned detergent is added to a surfactant-containing aqueous solution by adding a pH adjuster for enhancing a washing effect, a viscosity adjuster for adjusting viscosity, and a low-boiling compound, and then foaming. The cleaning agent for an air conditioner according to claim 1 or 2, further comprising a foaming aid and an insoluble compressed gas as a propellant, and filled in the aerosol container. Air conditioner cleaning method.