JP4696547B2 - Drain water bacteriostatic structure of air conditioner - Google Patents

Description

  The present invention relates to the structure of a drain water bacteriostatic part of an air conditioner.

  Generally, a drain pan that receives drain water and discharges it to the outside is provided at the lower part of a heat exchanger or the like of an air conditioner.

  For example, in the case of a window-type or wall-mounted air conditioner, the drain water once stored in the drain pan flows to the outside through a drain pipe using an inclined groove in the drain pan. In the case of a suspended air conditioner, generally, it is pumped up through a drain pump (including a drain up kit) and discharged to the outside through a drain pipe.

  However, in any case, the drain water stays in the drain pan within a predetermined time. Therefore, bacteria propagate in the drain water in the drain pan. As a result, problems such as a strange odor due to slime generation and clogging of the drain pipe are generated.

  As a countermeasure against this, for example, an antibacterial agent-containing resin composition layer containing crystalline polypropylene, an inorganic filler and an antibacterial agent has been laminated on the inner wall surface of a drain pan, and the antibacterial agent-containing resin composition layer is further laminated on the antibacterial agent-containing resin composition layer. A resin sheet or film that can permeate the agent is laminated so that the condensed water contacts the sheet or film (see Patent Document 1), and a copper alloy foil having a bactericidal effect is bonded to the bottom of the drain pan. (Refer to Patent Document 2), a disinfectant is placed in the drain pan forming member, and an ultraviolet lamp having a higher disinfection function is provided to irradiate the drain water with ultraviolet light (refer to Patent Document 3).

  However, all of these have a complicated structure of the drain pan itself, and there are problems that the bacteriostatic effect gradually decreases due to the progress of contamination such as slime generation.

  Further, in the case of providing the latter ultraviolet lamp, depending on the type of air conditioner, it is difficult to uniformly irradiate the entire drain pan with one lamp, and a plurality of lamps are required. There is a problem of getting higher.

  In general, for example, water-soluble glass or the like carrying an inorganic antibacterial agent in a container body 50A having a porous wall structure such as a mesh structure as shown in FIGS. 21 (a) and 21 (b). 21A and 21B show an antibacterial member 50 filled with granular or pellet antibacterial agents 50B, 50B... From which antibacterial agents having a bactericidal effect are dissolved by dissolving in water. The actual situation is that it is used in a fully immersed state.

  In the case of such a bacteriostatic structure, if the antibacterial agent 50B, 50B,... In the container 50A is used for a certain period and then disappears, it can be replaced with a new one and can be used for a long time by the replacement. It becomes.

JP 10-78240 A (page 1-4 of the specification, FIG. 1-3) JP-A-2-106630 (Specification, page 1-2, FIG. 4) JP 2000-97447 A (page 1-3 of the specification, FIGS. 1, 2 and 4)

  By the way, the above-mentioned antibacterial member 50 has a necessary minimum concentration that exhibits a bacteriostatic effect. Moreover, this minimum density | concentration changes with kinds of antibacterial agent 50B, 50B ... used. Therefore, normally, under the worst conditions within the range of use conditions (conditions in which the antibacterial agent elution concentration is the lowest), this minimum concentration is ensured and stable and effective static throughout the years of use. The amount (immersion amount) of the initial antibacterial agent is determined on the assumption that the fungus effect can be exhibited.

  When the antibacterial agent amount (immersion amount) determined in this way is used after being fully immersed in drain water as shown in FIG. 21 (a), the amount of the antibacterial agent 50B, 50B,. Therefore, the bacteriostatic effect is effectively exhibited even under the worst condition and other conditions, but the concentration of the antibacterial agent becomes higher than necessary under other conditions, and the antibacterial agent is wasted. Will do.

  By the way, looking at the elution characteristics of the antibacterial agents 50B, 50B... In this case, the tendency shown in FIG. FIG. 22 shows the relationship between the amount of water stored in the drain pan 8 and the antibacterial agent concentration. If the amount of immersion of the antibacterial agent and the immersion time are constant, the concentration of the antibacterial agent increases as the amount of stored water decreases. Therefore, the minimum concentration can always be ensured if the amount of immersion of the antibacterial agent can be changed in proportion to the amount of water stored.

  However, as described above, simply immersing the antibacterial member 50 in a fully immersed state corresponding to the minimum water level L1 cannot meet such a requirement.

  The present invention has been made to solve such problems, and the antibacterial agent is eluted only when necessary according to the water level at that time, and the concentration is always maintained regardless of changes in the amount of stored water. It is an object of the present invention to provide a drain water bacteriostatic structure of an air conditioner that can stably and efficiently maintain a bacteriostatic effect over a long period of time while maintaining a constant value.

  In order to achieve the above object, the present invention is configured with the following problem solving means.

(1) First Problem Solving Means The first problem solving means of the present invention is that the drain pan 8 of the air conditioner 1 has a first groove 81 and a second depth deeper than the first groove 81. While providing two groove parts with the groove part 82, the antibacterial agent 50B is made to act on the drain water stored in the said 1st groove part 81 and the 2nd groove part 82 in this 2nd groove part 82, and drain water extend the order to perform bacteriostatic antibacterial agent holding material 50D and the antibacterial agent of the water-soluble, which is mixed in a holding member 50D granular or pellet-like antibacterial agent 50B, the more becomes antibacterial member 50 and 50B · · · in the vertical direction The second groove 82 is installed in a state extending between the bottom of the second groove 82 and the maximum water level L2 .

According to such a configuration, the antibacterial member 50 extends in the vertical direction in the second groove 82 portion of the drain pan 8 of the air conditioner 1 and extends between the bottom of the second groove 82 and the maximum water level L2. Since the amount of water stored in the second groove 82 increases and the water level rises, the amount of the antibacterial agents 50B, 50B... Immersed in the drain water increases accordingly. . On the other hand, when the amount of stored water decreases and the water level decreases, the amount of antibacterial agents 50B, 50B... Immersed in the drain water decreases accordingly. Therefore, even if the amount of stored water changes, the concentration of the antibacterial agents 50B, 50B... Can be kept constant at all times.

(2) second means for solving problems of the second means for solving problems The present invention, in the configuration of the first means for solving problems, the antibacterial member 50, the maximum water level from near the bottom of the second groove 82 L2 It is characterized in that it consist of unitary continuous at positions 置Ma.

According to this structure, the integral of the antibacterial member 50 to be continuous with the maximum water level L2 of 置Ma from near the bottom of the second groove 82, the water level rises water volume is increased, and immersed in the drain water The amount of antibacterial agents 50B, 50B. On the contrary, when the amount of stored water decreases and the water level decreases, the amount of the antibacterial agents 50B, 50B. Thereby, even if the amount of stored water changes, the concentration of the antibacterial agents 50B, 50B... Can be kept constant at all times.

(3) The third problem solving means of the third means for solving problems The present invention, in the configuration of the first means for solving problems, the antibacterial member 50 includes a bottom or et maximum water level of the second groove 82 It is characterized that it is than the L 2 or in stepwise continuous multiple bodies.

According to this structure, the antibacterial member 50, 50, 50 of a plurality shape continuing maximum water level L 2 or in stages from the bottom near the second groove 82, when the water volume is the water level rises to increase The amount of the antibacterial agents 50B, 50B... Immersed in the drain water increases. On the contrary, when the amount of stored water decreases and the water level decreases, the amount of the antibacterial agents 50B, 50B. Thereby, even if the amount of stored water changes, the concentration of the antibacterial agents 50B, 50B... Can be kept constant at all times.

(4) Fourth means for solving problems of the fourth means for solving problems The present invention, in the configuration of the second means for solving problems, the antibacterial member 50 of the integral, bottom or al of the second groove 82 over the maximum water level L 2, it is characterized by being configured to antimicrobial agents 50B, the amount of 50B · · · increases.

  Therefore, according to such a structure, the immersion amount of the antibacterial agents 50B, 50B... Can be optimally changed corresponding to the water level, and even if the amount of drain water stored changes, the antibacterial agent in the drain water The concentrations of 50B, 50B,... Can be more reliably kept constant.

  As a result, according to the present invention, wasteful consumption of the antibacterial agent can be reduced, and the lifetime can be effectively extended to the maximum.

  In addition, since the antibacterial agent can be allowed to act at a constant bactericidal concentration that is always effective, a stable bacteriostatic effect can be maintained during that time.

(Best Embodiment 1)
Hereinafter, the bacteriostatic structure of the drain water of the air conditioner according to the first embodiment of the present invention will be described.

(An example of an air conditioner to be applied)
First, an example of the structure of an air conditioner to which the present invention is applied is shown in FIGS.

  As shown in FIGS. 1 to 2, the air conditioner has the air conditioner body 1 disposed above the opening 7 formed in the ceiling 14, and the lower surface portion of the air conditioner body 1. A decorative panel 2 that covers the opening 7 is attached from the lower side, and a substantially hexagonal cassette-type main body casing 3 of the air conditioner main body 1 includes a substantially annular heat exchanger 4 inside, The fan (centrifugal impeller) 5 and the fan motor 9 in the center of the heat exchanger 4 with the suction side facing downward and the air blowing side facing the side of the heat exchanger 4, A bell mouth 6 (air suction port 6a) disposed on the suction side is disposed.

  In this case, the fan 5 is composed of, for example, a centrifugal fan including a plurality of blades 5b, 5b,... Between the upper hub 5a and the lower shroud 5c. The fan 5 is supported such that the central shaft portion of the hub 5a is fixed to the motor shaft 9a of the fan motor 9 and can be rotated horizontally. The fan motor 9 is supported by the top plate 32 by attaching the fan motor mounting bracket 9b portion to the top plate 32 via the fan motor mounting members 11, 11,.

  In addition, the code | symbol 8 respond | corresponds to the shape of the said heat exchanger 4, the drain pan arrange | positioned therebelow, 10 is the air blowing path formed in the outer peripheral side of the said heat exchanger 4, 10a is the air blowing path downstream. It is an air outlet.

  The cassette-type main body casing 3 has a substantially hexagonal shape as described above, and includes the side wall 3a made of a heat insulating material and the above-described top plate 32 that covers the upper portion of the side wall 3a.

  The heat exchanger 4 includes two parallel rows of heat transfer tubes 42, 42, 42, 42... And a large number of plate fins 41, 41, 41, 41. It is made of a cross fin coil type, and tube plates 11 and 11 are provided on both open ends thereof, and the tube plates 11 and 11 are connected by a predetermined partition plate 12.

  The top plate 32 of the main body casing 3, the tube plates 11, 11, the partition plate 12, and the switch box 13 attached to the lower surface of the bell mouth 6 are all made of sheet metal products. The top plate 32 and the switch box 13 are fixed to the upper and lower ends of the partition plate 12 with screws.

  On the other hand, a recess 14 for accommodating the switch box 13 is formed on one side of the bell mouth 6, and the switch box 13 is fitted into the recess 14.

  Further, at the lower end of the partition plate 12, mounting pieces 19, 19 that are located at both ends thereof and serve as coupling portions to the lower ends of the tube plates 11, 11 are integrally projected. The attachment piece 19 is fixed to the tube plate 11 from below with screws.

  Reference numeral 21 is a drain hose connection port to the outdoor, 22 is a drain pump, 23 is a float switch, 24 is a drain pump housing portion where the drain pump 22 is disposed, 13a is a partition plate for partitioning the drain pump housing portion, and 26 is It is a lid cover of the switch box 13.

(Installation structure of drain pan and antibacterial member)
By the way, the drain pan 8 portion of the present embodiment is configured as shown in FIG. 3, for example.

  That is, the drain pan 8 is formed of a predetermined heat insulating material as a whole, and, as shown in FIG. 3, between the outer peripheral side wall 8a and the inner peripheral side wall 8b, the plate fins 41, There are provided two groove portions, a first groove portion 81 on which 41, 41, 41... Are placed and a second groove portion 82 for drain water discharge that is deeper than the first groove portion 81. ing.

  The antibacterial agent 50B is allowed to act on the drain water stored (including the outflow state) in the first groove 81 and the second groove 82 in the second groove 82 portion, so that the drain water The antibacterial member 50 that performs bacteriostatic bacteriology is installed in a standing state extending in the vertical direction and extending between the bottom of the second groove 82 and the maximum water level L2.

  As shown in detail in FIGS. 4 to 6, for example, the antibacterial member 50 has a cylindrical structure having a predetermined length L3 corresponding to the dimension (distance) between the bottom of the second groove 82 and the maximum water level L2. A container body (antibacterial agent holding material) 50A having a porous wall, and a plurality of granular or pellet antibacterial agents 50B, 50B,... The lower end 50a side is securely immersed in the drain water at the minimum water level L1, and the upper end 50c side is supported on the bottom of the second groove portion 82 so as to reach the maximum water level L2.

  The granular or pellet antibacterial agents 50B, 50B,... In the container body 50A have a property of dissolving in water, and the drains in the first and second groove portions 81, 82 of the drain pan 8. Depending on the amount of water (immersion amount), it dissolves and elutes outside through the numerous holes in the wall portion of the container body 50A to effectively sterilize the bacteria in the drain water.

  When realizing such a bacteriostatic action, as described above, the antibacterial agent 50B has a minimum concentration necessary to exert an effective bacteriostatic effect. This minimum concentration varies depending on the type of antibacterial agent 50B used. Therefore, as described above, this minimum concentration is usually secured under the worst conditions within the range of use conditions (conditions in which the antibacterial agent elution concentration is the lowest), and stable over the years of use (for example, 10 years). The amount of the initial antibacterial agent (dipping amount) is determined on the assumption that an effective bacteriostatic effect can be exhibited.

  When the initial antibacterial agent amount (immersion amount) determined in this manner is immersed in the drained water as in the prior art (FIG. 21) and used under the worst condition and other conditions. Although the bacteriostatic effect is effectively exhibited, the antibacterial agent is unnecessarily consumed under other conditions because the concentration of the antibacterial agent becomes higher than necessary.

  By the way, when the elution characteristics of the antibacterial agents 50B, 50B... In this case are seen, for example, a tendency as shown in FIG. FIG. 22 shows the relationship between the amount of water stored in the drain pan 8 and the antibacterial agent concentration. If the amount of immersion of the antibacterial agent and the immersion time are constant, the concentration of the antibacterial agent increases as the amount of stored water decreases. Therefore, if the amount of the antibacterial agent immersed can be changed in proportion to the amount of water stored, the minimum concentration can always be ensured regardless of the change in the water level.

  Next, it is necessary to grasp the changing conditions of the water storage amount. When the current self-control type drain pump is used, the amount of stored water increases when the amount of generated drain is large, such as during the rainy season. Conversely, when the amount of drainage is low, such as during the interim period, the amount of stored water decreases. Further, when the operation is stopped from the cooling state, the drain pump 22 is stopped, and the drain water staying in the heat exchanger 4 is discharged to the drain pump 22, so that the amount of stored water is increased. In other words, although the amount of drain water stored varies depending on the operating conditions, the amount of drain water stored can be grasped by knowing the level of drain water since the amount of drain water stored is proportional to the level of drain water.

  Therefore, if the immersion amount of the antibacterial agent is changed corresponding to the water level of the drain water, the concentration of the antibacterial agent in the drain water can be kept constant even if the storage amount of the drain water changes.

  For this reason, as described above, the antibacterial member 50 having the length L3 corresponding to the predicted change level of the water level is arranged from the bottom of the second groove 82 to the maximum water level L2 position. Accordingly, when the amount of drain water stored increases and the water level of the drain water rises, the amount of the antibacterial agent immersed in the drain water increases. Conversely, when the amount of drain water stored decreases and the water level decreases, the amount of antibacterial agent decreases. Therefore, the concentration of the antibacterial agent can be kept constant even when the amount of drain water stored changes (see FIGS. 7A and 7B).

  In addition, in this configuration, the configuration of only the antibacterial member 50 can be arbitrarily coped with, and the configuration on the drain pan 8 side can be kept as it is, so that the configuration is simple and low in cost.

  As a result, according to the configuration of the present embodiment, unlike the case of the conventional full immersion (FIGS. 21A and 21B), the wasteful consumption of the antibacterial agent 50 is reduced, and a certain level of stability is achieved. Effectively long life can be extended by concentration.

  That is, in the same configuration, the antibacterial agents 50B, 50B,... Are eluted only when necessary according to the amount of drain water stored at that time, the concentration is always kept constant, and the efficiency is stable for a long time. The bacteriostatic effect can be sustained.

(Modification 1)
Next, FIG. 8, FIG. 9, and FIG. 10 are characterized in that the shape of the antibacterial member 50 described above is changed from a cylindrical shape to a flat cylindrical shape. Other configurations are exactly the same as those of the first embodiment.

  Even with such a configuration, it is possible to obtain the same operational effects as those of the first embodiment.

  Moreover, according to such a structure, even when the width | variety of the 2nd groove part 82 in the drain pan 8 is narrow, it can install easily.

  Furthermore, in the case of such a configuration, the container main body 50A is suitable for being constituted by, for example, a flexible mesh member (made of synthetic resin).

  When the container main body 50A is formed of a mesh member, for example, as shown in FIG. 10, a flat bag structure may be realized by joining or sewing one side and both upper and lower sides as a folded structure. Good.

(Modification 2)
Next, FIGS. 11 to 13 do not store the antibacterial member 50 described above in a granular or pellet-shaped antibacterial agent 50B, 50B,... Synthetic resin material (antibacterial agent holding material) The granular or pellet-like antibacterial agents 50B, 50B,... Are uniformly kneaded into 50D to form a cylindrical structure having the same length and the same diameter. To do.

  Even in such a configuration, as the synthetic resin material 50D and the antibacterial agents 50B, 50B,... Are dissolved, the bactericidal action is effectively exerted. As long as it is kept in this state, it is possible to maintain a stable antibacterial action over a long period (10 to 10 years) at a constant concentration according to the water level substantially the same as in the above case.

(Best Mode 2)
Next, FIG. 14 and FIG. 15 show the drain bacteriostatic structure of the air conditioner according to the second preferred embodiment of the present invention.

  In this embodiment, the above-described antibacterial member 50 is sandwiched and fixed in the gap between the plate fins 41 and 41 of the heat exchanger 4, for example, in the same state as in the above-described best embodiment 1. It is characterized by being installed in the second groove 82 of the drain pan 8.

  The other configurations are all the same as those of the first embodiment described above.

  Even with such a configuration, it is possible to obtain the same effects as those of the best embodiment 1.

  Further, in this case, since no special attachment member or attachment structure is required for actual installation, the cost is low.

(Best Mode 3)
Next, FIGS. 16 and 17 show the drain water bacteriostatic structure of the air conditioner according to the third preferred embodiment of the present invention.

  In the configuration of the best embodiment 2, the antibacterial member 50 is installed in contact with the plate fins 41, 41... Of the heat exchanger 4 as described above. The amount is reduced.

  Therefore, in this embodiment, as shown in FIGS. 16 and 17, for example, an engaging ring 51 is used, and the engaging member 51 is fitted into and held in an antibacterial member 50 having a cylindrical structure, for example. A portion 51c and a hook portion 51b having a reverse J-shape that is connected to the back surface of the ring portion 51c and engages with the side wall 8a of the drain pan 8 via the locking piece 51a. That the antibacterial member 50 is placed close to the outer peripheral side wall 8a of the drain pan 8 by the engaging member 51 and installed in the same state as in FIG. It is characterized by.

  Moreover, according to such a structure, since the engagement piece 51a of the hook part 51b only needs to be engaged with the side wall 8a, installation and replacement of the antibacterial member 50 are facilitated.

(Fourth Embodiment)
Next, FIG. 18 shows a drain water bacteriostatic structure of an air conditioner according to the fourth embodiment of the present invention.

  This embodiment is characterized in that the antibacterial member 50 described above is installed in a drain pump 22 portion that is easily subjected to, for example, moderate vibration (fine vibration) and is generally set as a maintenance space.

  As is clear from FIG. 2, for example, this drain pump installation portion is provided at a predetermined distance on the outer peripheral side of the installed heat exchanger 4, and in this portion, for example, as shown in FIG. The second groove portion 82 of the drain pan 8 below the heat exchanger 4 is also widely formed radially outward by a predetermined distance, and the water inlet 22a of the drain pump 22 is exposed to the bottom of the groove portion 82 so as to be able to absorb water. ing.

  One end of the drain hose 20 is fitted into the drain water discharge port 22 b of the drain pump 22.

  In the case of this embodiment, an engagement piece 22c for sandwiching and holding the antibacterial member 50 is integrally formed on the bottom wall portion of the main body side pump casing of the drain pump 22 at a predetermined interval. The antibacterial member 50 having the cylindrical structure described above is held at the tip thereof between the maximum water level L2 in the drain pan 8 and the bottom of the second groove 82.

  According to such a configuration, the antibacterial agent 50B can be obtained by the fine vibration when the drain pump 22 is driven, as well as by obtaining the antibacterial member 50 to obtain the same operational effects as those of the respective best embodiments. , 50B... Can be eluted smoothly from the entire container body 50A, and the antibacterial agents 50B, 50B.

  In general, the above-described granular or pellet-shaped antibacterial agents 50B, 50B,... Do not necessarily elute smoothly and uniformly from inside the container body 50A. Therefore, in order to elute smoothly, some device is required.

  The above configuration is highly effective as a countermeasure in that case.

  Moreover, since the drain pump 22 part is originally set as a maintenance space, it is convenient for replacement of the antibacterial member 50 that has been used for many years.

(Best Mode 5)
Next, FIG. 19 shows a drain water bacteriostatic structure of an air conditioner according to the fifth preferred embodiment of the present invention.

  In this embodiment, the overall shape of the antibacterial member 50 in the above-described best embodiment 1 is reduced according to the shape of the grooves 81 and 82 in the drain pan 8, for example, in the portion below the minimum water level L 1, The amount of the antibacterial agent is gradually increased from the bottom side of the second groove 82 in the drain pan 8 to the maximum water level L2 side by increasing the diameter in the portion from the vicinity of the minimum water level L1 to the vicinity of the upper maximum water level L2. It is characterized by being configured to increase.

  Therefore, according to such a configuration, the immersion amount of the antibacterial member 50 can be changed more optimally in accordance with the shape of the drain groove and the corresponding change in the water level, and the storage amount of the drain water is changed. However, the concentration of the antibacterial agent in the drain water can be more reliably kept constant.

(Best Mode 6)
Next, FIG. 20 shows a drain water bacteriostatic structure of an air conditioner according to the sixth preferred embodiment of the present invention.

  In this embodiment, the overall shape of the antibacterial member 50 in the above-mentioned best embodiment 1 is, for example, a small diameter in the portion below the minimum water level L1 and from the vicinity of the minimum water level L1 to the upper maximum water level L2. By gradually increasing the diameter, the amount of the antibacterial agent increases from the bottom side of the second groove 82 in the drain pan 8 to the maximum water level L2 side.

  Therefore, according to such a configuration, the amount of immersion of the antibacterial member 50 can be optimally changed according to the water level, and even if the amount of drain water stored changes, the concentration of the antibacterial agent in the drain water can be further increased. It can be surely kept constant.

(Best Mode 7)
In the above configuration of the respective embodiments, the antibacterial member 50 to be installed from the bottom of the second groove portion 82 as described above up to the vicinity of the maximum water level L2, it was made up of the integral respectively over its entire, For example, it may be a plurality of bodies that are continuously stepped from near the bottom of the second groove 82 to near the maximum water level L2.

According to such a configuration, the amount of stored water is increased by the plurality of antibacterial members 50, 50, 50..., Which are stepwise continuous from the vicinity of the bottom of the second groove 82 to the vicinity of the maximum water level L 2 position. As the water level rises, the amount of the antibacterial agent immersed in the drain water increases, and conversely, when the water storage amount decreases and the water level decreases, the amount of the antibacterial agent can decrease. As a result, even if the amount of stored water changes, the concentration of the antibacterial agent can always be kept constant.

(Other best embodiments)
(A) Applicable air conditioner In the above description, the ceiling-embedded air conditioner is targeted as an example. However, the bacteriostatic structure of the present invention may be applied to other types of air conditioners, such as a ceiling suspended air conditioner. It is effective for bacteriostatic drain water in various air conditioners such as a lower air conditioner, a wall-mounted air conditioner, and a window type air conditioner.

  Moreover, the thing which does not have a drain pump may be sufficient as well as what has a drain pump in a drain pan part.

  Furthermore, regarding the drain pan and the drain pump, for example, a drain pan, a drain pump, or a drain up kit in which a water level control mechanism is used may be used.

  The kit is used separately from the indoor unit itself (the electric system may be linked) and can be drained alone if drain water flows in. Use this kit separately if the drain pump installed in the product does not have enough lift. Even in this case, the contents of the present invention are effective.

(B) Antibacterial agent As the antibacterial agent used in each of the above embodiments, any one of an organic antibacterial agent, an inorganic antibacterial agent, or a mixture thereof can be arbitrarily selected and used. Examples of organic antibacterial agents include phenols, haloalkyls, iodos, benzimidazoles, thiocarbamates, heterocyclic nitrogen compounds, quinones, isothiazolines, quaternary ammonium salts, cyanates, and anilides. In addition, trichlorocarbanide, polyhexamethylene biguanide hydrochloride, octadecyldimethyl-3-trimethoxysilylpropylammonium and the like can be mentioned as main components.

  In addition, as an inorganic antibacterial agent, for example, an inorganic antibacterial agent mainly composed of an inorganic compound such as silver, copper, zinc and tin, and these antibacterial agents include calcium carbonate, zeolite, kaolin clay, diatomaceous earth, talc, bentonite, Examples thereof include inorganic antibacterial agents supported on ceramics, activated carbon, apatite, and the like.

  Inorganic antibacterial agents supported on ceramics, activated carbon, apatite, etc. have advantages such as high antibacterial properties, non-volatility, and easy kneading with resins. Therefore, it is suitable for implementing the antibacterial member 50 like the above-mentioned modification 2 (FIGS. 12-14).

  In addition, such an antibacterial agent-containing resin composition can be produced by adding and blending additives such as a deodorant and a flavoring agent as needed within a range not departing from the object of the present invention. It can be made highly effective.

  Further, as the granular or pellet-shaped antibacterial agents 50B, 50B,... Having the property of dissolving in water as described above, for example, water-soluble glass carrying an inorganic antibacterial agent as described above, It is also possible to adopt an antibacterial agent having a granular or pellet structure in which an antibacterial agent having a bactericidal effect gradually dissolves when dissolved.

It is sectional drawing which shows the structure of the air conditioner common to each best embodiment to which the drain water bacteriostatic structure of this invention is applied. It is a bottom view which shows the structure of the main body casing and the inner part of the air conditioner. It is sectional drawing of the drain pan part which shows the drain water bacteriostatic structure of the air conditioner which concerns on the best Embodiment 1 of this invention. It is an enlarged front view of the antibacterial member which is the principal part of the structure. It is a top view of the antibacterial member. It is an expanded longitudinal cross-sectional view which shows the structure inside the antibacterial member. It is sectional drawing for description which divides | segments the effect of the antibacterial member into the minimum water level state (a) and the maximum water level state (b), and compares the operation between them. It is a top view which shows the structure of the modification 1 of the antibacterial member. It is an expanded horizontal sectional view which shows the structure inside the antibacterial member of the modification 1. FIG. 12 is an enlarged horizontal sectional view showing another configuration example of the first modification. It is a top view which shows the structural example of the modification 2 of the antibacterial member. It is a top view which shows the structure of the antibacterial member of the modification 2. It is an expanded sectional view which shows the longitudinal cross-section of the antibacterial member of the modification 2. It is sectional drawing of the drain pan part which shows the drain water bacteriostatic structure of the air conditioner which concerns on best Embodiment 2 of this invention. It is an enlarged front view of the principal part of the structure. It is sectional drawing of the drain pan part which shows the drain water bacteriostatic structure of the air conditioner which concerns on best Embodiment 3 of this invention. It is an enlarged plan view of the principal part of the structure. It is sectional drawing of the drain pan part which shows the drain water bacteriostatic structure of the air conditioner which concerns on best Embodiment 4 of this invention. It is sectional drawing of the drain pan part which shows the drain water bacteriostatic structure of the air conditioner which concerns on best Embodiment 5 of this invention. It is sectional drawing of the drain pan part which shows the drain water bacteriostatic structure of the air conditioner which concerns on the best Embodiment 6 of this invention. The drain water bacteriostatic structure of the air conditioner according to the embodiment of the conventional invention and its action and effect are divided into the minimum water level state (a) and the maximum water level state (b), and the problems between them are compared. It is sectional drawing for description to show. It is a graph which shows the problem of the antimicrobial effect in the structure.

1 is an air conditioner, 4 is a heat exchanger, 8 is a drain pan, 8a and 8b are side walls, 22 is a drain pump, 41 is a plate fin, 42 is a heat transfer tube, 50 is an antibacterial agent, 50A is a container body (antibacterial agent holding Material) 50B is an antibacterial agent, 50D is a synthetic resin material (antibacterial agent holding material), 81 is a first groove, 82 is a second groove, L1 is a minimum water level, and L2 is a maximum water level.

Claims (4)

The drain pan (8) of the air conditioner 1 is provided with two groove portions, that is, a first groove portion (81) and a second groove portion (82) deeper than the first groove portion (81). In the second groove (82), an antibacterial agent (50B) is allowed to act on the drain water stored in the first groove (81) and the second groove (82) to prevent the drain water from flowing. antimicrobials holding member to perform the bacteria (50D) and the antibacterial agent holding material (50D) entrained water-soluble granular or pellet-like antimicrobial agent in (50B), the antibacterial member made more and (50B) · · · A drain bacteriostatic structure for an air conditioner , wherein (50) is installed in a state extending in the vertical direction and extending between the bottom of the second groove (82) and the maximum water level L2 . The antibacterial member (50), said second groove (82) bottom or et maximum water level L 2 or the air conditioner according to claim 1, characterized in that it consist of unitary continuous with the Drain water bacteriostatic structure. The antibacterial member (50), according to claim 1, wherein that it is than that of the bottom or et maximum water level L 2 or in stepwise continuous plurality of the second grooves (82) Drain water bacteriostatic structure of air conditioner. The integral of the antibacterial member (50), over the bottom or et maximum water level L 2 of the second groove (82), antibacterial agents (50B), so that much amount of (50B) · · · It is comprised, The drain water bacteriostatic structure of the air conditioner of Claim 2 characterized by the above-mentioned.

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