JP4722165B2 - Air conditioner - Google Patents

Description

  The present invention relates to an air conditioner (indoor unit) including a heat exchanger, a drain pan that receives condensed water generated from the heat exchanger, and a drain pump that discharges drain water accumulated in the drain pan. More specifically, the present invention relates to a technique for preventing clogging of the drain pump by sterilizing bacteria and mold that cause clogging of the drain pump by discharge in drain water.

In order to provide an air-conditioning indoor unit that can realize antibacterial and anti-fungal measures on the water conduit at low cost, water dripped from the indoor heat exchanger is received by the front side drain pan and the back side drain pan, and then outside the machine via the drain pipe. In an air conditioning indoor unit equipped with a water conduit for draining, an air conditioning indoor unit has been proposed in which an antibacterial / antifungal material that elutes antibacterial / antifungal components when it comes into contact with water is disposed at the bottom of the front side drain pan (for example, patents) Reference 1).
JP 2000-74409 A

  However, in the conventional drain pan antibacterial technology described in Patent Document 1 and the like, since the capacity of the antibacterial agent is initially determined, the antibacterial effect is lost after elution of the initial antibacterial agent capacity, There was a problem of clogging the drain pump due to the propagation of bacteria.

  In addition, the antibacterial agent is not effective for all the bacteria present in the drain pan, there is a problem that there are bacteria that originally have no effect, or bacteria resistant to the antibacterial agent are generated over time. .

  This invention was made to solve the above-mentioned problems, and can continue the sterilization of the drain pan semipermanently, and also exhibits the sterilization effect of the drain pan in any installation environment and fungus breeding environment. An air conditioner that can eliminate clogging of a drain pump is provided.

An air conditioner according to the present invention is an air conditioner including a heat exchanger, a drain pan that receives condensed water generated from the heat exchanger, and a drain pump that discharges drain water accumulated in the drain pan.
A sterilization apparatus that is installed in the drain pan and includes the following elements is provided.
(1) At least a pair of discharge electrodes paired with a high voltage electrode and a ground electrode disposed opposite to the high voltage electrode with a predetermined gap;
(2) A high voltage power supply for applying a high voltage pulse to the discharge electrode.

  Since the air conditioner of the present invention has a configuration in which a sterilizer is installed in the drain pan, it is possible to kill bacteria and mold in the drain water by electric discharge, eliminating the drain pump clogging caused by bacteria and mold viscosity Has the effect of In addition, since the sterilizer uses the effect of discharge, by actively controlling the discharge, it is possible to continuously suppress the growth of bacteria in the drain pan, and the effect that the type of bacteria is not selected Have

Embodiment 1 FIG.
First, the definition of the air conditioner in the present embodiment will be described. The air conditioner in the present embodiment is an air conditioner including a heat exchanger, a drain pan that receives condensed water generated from the heat exchanger, and a drain pump that discharges drain water accumulated in the drain pan. Specifically, there is a ceiling-embedded air conditioner (there is a type that has a decorative panel and the decorative panel is exposed in the room, and a type in which the entire body is installed behind the ceiling), and an optional top that is equipped with a drain pump. These are a suspended air conditioner and a wall-mounted air conditioner.

  In the present embodiment, the following description will be given by taking a ceiling-embedded air conditioner (a type having a decorative panel and exposing the decorative panel in a room) as an example.

  FIGS. 1 to 9 are diagrams showing the first embodiment, and FIG. 1 is a perspective view of a state where the ceiling-embedded air conditioner 100 (indoor unit) is attached to the ceiling of the room 45 as seen from the room 45, FIG. Is a cross-sectional view of the ceiling-embedded air conditioner 100, FIG. 3 is a conceptual diagram showing the arrangement of the drain pump 4 and the like in the ceiling-embedded air conditioner 100, and FIG. FIG. 5 is a configuration diagram showing the internal configuration of the drain pan 5 provided with the sterilizer 1, FIG. 6 is a diagram showing a method for fixing the drain pump 4 and the discharge electrode 2 to the housing 20, and FIG. 7 is a drain pump. 4 is a perspective view showing a state in which the discharge electrode 2 and the like are attached to FIG. 4, FIG. 8 is a schematic configuration diagram showing the sterilizer 1, and FIG. 9 is an external view showing the shape of the high voltage electrode 2a.

  A configuration of an example of the ceiling-embedded air conditioner 100 will be described with reference to FIGS. 1 to 4.

  As shown in FIG. 1, in the ceiling-embedded air conditioner 100 (indoor unit), a substantially rectangular decorative panel 47 provided at the lower part of the ceiling-embedded air conditioner 100 can be seen on the ceiling of the room 45. It is buried in the state. Near the center of the decorative panel 47 is formed along a substantially rectangular grille 38 (suction port) communicating with the air suction port to the ceiling-embedded air conditioner 100 and each side (four sides) of the housing 20. In addition, there are four outlets 48 communicating with the main body outlet 40 (see FIG. 4), and each outlet 48 is provided with a vane 49 that controls the direction of the blown air.

  As shown in FIG. 2, the casing 20 has a substantially quadrangular cross-sectional shape like the decorative panel 47. A main body outlet 40 is formed along each side (four sides) of the housing 20. A blower 30 is installed at a substantially central portion of the housing 20. A heat exchanger 7 (substantially C-shaped) is arranged in a substantially annular shape so as to surround the blower 30.

  Further, the drain pump 4 is disposed at one corner of the casing 20 having a substantially square cross section. The drain pump 4 discharges the drain water accumulated in the drain pan 5 that receives the condensed water generated from the heat exchanger 7 to the outside of the housing 20.

  As shown in FIG. 3, a drain pump 4 is disposed at one corner of the housing 20, and a discharge electrode 2 constituting a sterilizer (described later) is provided in the vicinity of the drain pump 4.

  In addition, a substrate 14 on which a high voltage power source 3 (described later) for applying a high voltage pulse to the discharge electrode 2 constituting the sterilizer is mounted on the housing 20.

  As shown in FIG. 4, a blower 30 (centrifugal blower) having a fan 30a (turbo fan) whose lower side is a suction port and a fan motor 30b for driving the fan 30a at a substantially central portion in the housing 20 is provided. Is placed.

  A fan motor 30b is attached to the top surface side of the housing 20, and a bell mouth 50 for introducing air into the fan 30a is disposed below the fan 30a.

  Further, a heat exchanger 7 (substantially C-shaped) is arranged in a substantially annular shape so as to surround the fan 30 a, and a drain pan 5 is installed at the lower part of the heat exchanger 7. The heat exchanger 7 constitutes a refrigeration cycle together with a compressor or the like that compresses refrigerant of an outdoor unit (not shown). In the heat exchanger 7, the indoor air sucked from the grill 38 by the fan 30a and the refrigerant of the refrigeration cycle exchange heat to generate cold air or hot air.

  On the outside along each side of the drain pan 5, there is a main body outlet 40 that communicates the secondary side of the heat exchanger 7 with the room, and communicates with the outlet 48 of the decorative panel 47.

  A vane 49 is attached to the air outlet 48, and adjustment of the blowing direction of the cold air or the hot air generated by the heat exchanger 7 is possible. The shape of the vane 49 is substantially the same as that of the air outlet 48, and is designed in consideration of the design that substantially closes the air outlet 48 when the vane 49 is closed.

  A substantially rectangular grill 38 is attached to the opening at the substantially center of the decorative panel 47. The grill 38 is engaged with the decorative panel 47 by, for example, claws.

  FIG. 5 is a configuration diagram showing the internal configuration of the drain pan 5 provided with the sterilizer 1. During the cooling operation or the dehumidifying operation of the ceiling-embedded air conditioner 100, the temperature becomes lower than the indoor air that the heat exchanger 7 exchanges heat, so condensed water is generated on the surface of the heat exchanger 7. Here, the condensed water is referred to as drain water 6.

  The drain water 6 is stored in the drain pan 5 and drained out of the housing 20 by the drain pump 4.

  The sterilizer 1 is installed in a drain pan 5 that stores drain water 6, and a pair of a high voltage electrode 2a covered with an insulator (resin) and a ground electrode 2b arranged to face each other with a predetermined gap. A discharge electrode 2 and a high voltage power source 3 for applying a high voltage pulse to the discharge electrode 2 are provided. At least one or more discharge electrodes 2 are provided.

  At least the tip of the discharge electrode 2 is disposed below the suction port 4 a of the drain pump 4 so that the tip of the discharge electrode 2 is immersed in the drain water 6.

  Further, the drain pan 5 is equipped with a drain water level sensor 8 that detects the water level of the drain water 6.

  FIG. 6 is a diagram illustrating a method for fixing the drain pump 4 and the discharge electrode 2 to the housing 20. As shown in FIG. 6, the heat exchanger 7 and the drain pan 5 are installed in a housing 20 including the outer sheet metal 9 and the heat insulating material 10. The drain pump 4 is fixed to the casing 20 (for example, the top surface of the casing 20) by a drain pump mounting member 11 that attaches the drain pump 4 to the casing 20.

  The discharge electrode 2 having a pair of the high voltage electrode 2a and the ground electrode 2b arranged opposite to each other with a predetermined gap is maintained in a relative height relationship with the suction port 4a of the drain pump 4 (discharge electrode 2). The at least the front end of the discharge electrode 2 is installed below the suction port 4a of the drain pump 4 so that the front end is immersed in the drain water 6), and the electrode mounting integrated with the drain pump 4 It is installed via the member 12.

  FIG. 7 is a perspective view showing a state in which the discharge electrode 2 and the like are attached to the drain pump 4. A drain pump mounting member 11 is fixed to the drain pump 4. The drain pump mounting member 11 is fixed to the housing 20 (for example, the top surface of the housing 20) using screws or the like using the notch 11a of the drain pump mounting member 11.

  The discharge electrode 2 paired with the high voltage electrode 2a and the ground electrode 2b arranged to face each other with a predetermined gap is fixed to the electrode mounting member 12 using screws or the like. The electrode mounting member 12 is fixed to the drain pump mounting member 11 using screws or the like.

  Further, a drain water level sensor 8 that detects the water level of the drain water 6 is fixed to the drain pump attachment member 11.

  As shown in FIG. 8, the sterilizer 1 has a configuration in which a discharge electrode 2 having a pair of a high voltage electrode 2a and a ground electrode 2b is connected to a high voltage power source 3 that generates a high voltage pulse.

  The high voltage electrode 2a is configured to be connected to the electrode 2a-1 from the high voltage power source 3 via the high voltage wire 2a-3. The periphery of the electrode 2a-1 is molded by the mold resin 2a-2 including the connection portion with the high voltage electric wire 2a-3.

  Since the material of the electrode 2a-1 is used in an underwater environment, a metal excellent in corrosiveness is desirable. For example, titanium, tungsten, or the like is suitable. The thickness of the electrode 2a-1 is about 0.2 mm.

  As a material of the mold resin 2a-2, a resin excellent in withstand voltage, moisture resistance, and heat resistance is preferable, and a thermosetting resin such as epoxy is preferable.

  For example, the tip of the electrode 2a-1 is exposed in water, but does not protrude from the mold resin 2a-2. For example, the tip on the discharge side of the high voltage electrode 2a is cut to expose the tip. By covering the entire side surface of the high voltage electrode 2a with the mold resin 2a-2 (insulator), a discharge occurs at the tip. When a negative high-voltage pulse is applied to the discharge electrode 2, the electric field lines generated between the high-voltage electrode 2a and the ground electrode 2b are electric field lines because the tip of the high-voltage electrode 2a is not a projection but a plane. Suppresses the radial spread, and flows from the high voltage electrode 2a in a direction perpendicular to the ground electrode 2b. The side surfaces of the high voltage electrode 2a are all covered with the mold resin 2a-2, and the end surface of the tip portion of the high voltage electrode 2a and the end surface of the tip portion of the mold resin 2a-2 are the same surface. Therefore, the tip of the high voltage electrode 2a contributes to the discharge. Moreover, corrosion of the high voltage electrode 2a can also be suppressed by making discharge polarity negative. The high voltage pulse may be positive as long as the structure suppresses corrosion of the high voltage electrode 2a.

  One ground electrode 2b has substantially the same configuration as the high voltage electrode 2a. That is, the high voltage power supply 3 is connected to the electrode 2b-1 via the electric wire 2b-3. The periphery of the electrode 2b-1 is molded by the mold resin 2b-2 including the connection portion with the high voltage electric wire 2b-3. The thickness of the electrode 2b-1 is about 1.0 mm.

  For example, the tip of the electrode 2b-1 is exposed in water. The tip protrudes several millimeters from the mold resin 2b-2.

  Since the ground electrode 2b does not apply as high a voltage as the high voltage electrode 2a, the electric wire 2b-3 does not have to have a high breakdown voltage. However, since the corrosiveness of the electrode and the moisture resistance of the mold resin 2b-2 need to be equivalent to those of the high voltage electrode 2a, the material of the electrode 2b-1 and the material of the mold resin 2b-2 are the same as those of the high voltage electrode 2a. Consists of the same material.

  FIG. 9 is an external view showing the shape of the high voltage electrode 2a. The same applies to the ground electrode 2b.

  As described above, the high-voltage electrode 2a and the ground electrode 2b are molded with the mold resins 2a-2 and 2b-2. However, as shown in FIG. By adopting the shape of the engaging portion 2a-4, attachment to the electrode attachment member 12 (FIGS. 6 and 7) is facilitated, and other attachment members are reduced.

Next, the operation of the sterilizer 1 will be described.
After the drain water 6 is stored in the drain pan 5, the high voltage power source 3 causes a negative high voltage of 2 to 50 kV / cm, 100 Hz to 20,000 Hz between the high voltage electrode 2a and the ground electrode 2b. A pulse is applied to discharge. Dielectric breakdown occurs due to the discharge of the high-voltage electrode 2a, water is evaporated by the energy, and vaporized with a shock wave generates water vapor bubbles.

  These bubbles generated in the vicinity of the high voltage electrode 2a are caused by accumulation of charged particles such as electrons generated by discharge, shock waves at the time of water evaporation, and electrons by an electric field formed between the high voltage electrode 2a and the ground electrode 2b. And the bubbles themselves are negatively charged, so they are attracted to the ground electrode 2b side. Therefore, a jet flow is generated by bubbles from the high voltage electrode 2a side toward the ground electrode 2b side.

  Along with the jet flow starting from the high-voltage electrode 2a generated by the bubbles, bacteria and microorganisms contained in the drain water 6 also flow toward the high-voltage electrode 2a together with the plasma at the tip of the high-voltage electrode 2a, These microorganisms and fungi are sterilized one after another efficiently.

The features of the sterilizer 1 are summarized as follows.
(1) Since ozone is not generated by dissociation of oxygen by discharging in drain water 6, there is no ozone odor.
(2) There is no danger of fire by using an electric circuit configuration only in the drain water 6.
(3) In principle, the effect of the sterilizer 1 is semi-permanent.
(4) The effect is demonstrated regardless of the type of bacteria. Also, do not make resistant bacteria.

  A method of using the sterilizer 1 in the ceiling-embedded air conditioner 100 will be described. Considering only the sterilization of the drain water 6, it is desirable to operate the sterilizer 1 for a long time. However, operating the device continuously for a long time is a waste of electricity costs, and the electronics of the substrate 14 on which the high voltage power supply 3 is mounted. Since the parts and the discharge electrode 2 also have a lifetime, it is necessary to operate the sterilizer 1 for a required time effectively.

  The operation time of the sterilizer 1 is controlled by a control unit (a microcomputer incorporating a predetermined operation program) mounted on the substrate 14 in conjunction with the operation of the ceiling-embedded air conditioner 100.

  For example, in the cooling operation mode or the dehumidification operation mode in which the drain water 6 is generated in the heat exchanger 7, the sterilizer 1 is operated intermittently.

  The ratio of the operation time of the sterilizer 1 to the cooling operation or the dehumidifying operation time is determined by the amount of propagation of bacteria, but in a normal ceiling-embedded air conditioner 100 (indoor unit), 50% of the cooling operation or dehumidifying operation time. If the sterilizer 1 is operating, the sterilizing ability by discharge exceeds the reproductive ability of the bacteria, and the bacteria cannot grow. Therefore, the ratio of the operation time of the sterilizer 1 to the cooling operation or the dehumidifying operation time is 50%. The sterilizer 1 is operated so that it becomes the above.

  Specifically, in the cooling operation mode or the dehumidifying operation mode in which the drain water 6 is generated in the heat exchanger 7, for example, the sterilizer 1 is operated for 3 hours or more (for example, 4 hours), and then for 3 hours. Less than (for example, 2 hours), the sterilizer 1 is stopped. Then, this cycle is repeated.

  Also, the propagation of bacteria in the drain water 6 occurs when the amount of the drain water 6 is increased by the return water from the drain pipe (not shown) and the temperature of the drain water 6 is increased after the cooling operation or the dehumidifying operation is stopped. Therefore, by continuing the sterilization of the drain water 6 by operating the sterilizer 1 for a certain period of time after the cooling operation or the dehumidifying operation is stopped, the propagation of bacteria in the drain pan 5 can be effectively suppressed.

  The continuous operation time of the sterilizer 1 after the cooling operation or the dehumidification operation is stopped depends on the amount of drain water 6 returned from the drain pipe after the operation is stopped. If sterilization is performed by the sterilization apparatus 1 for 3 hours or more (defined as a certain time, for example, 6 hours), the number of bacteria in the drain pan 5 can be reduced by two digits or more, and the bacteria at a level that clogs the drain pump 4 Can be prevented from breeding.

  Moreover, since the indoor unit of the air conditioner equipped with the drain pump 4 is usually equipped with a drain water level sensor 8 for detecting the water level of the drain water 6, the drain water level sensor 8 is used to maintain a constant level. When the drain water 6 exists above the water level, the sterilizer 1 may be operated.

  As described above, in the ceiling-embedded air conditioner 100 in which the sterilizer 1 is installed, discharge is caused by the sterilizer 1 in the drain water 6, so that bacteria present in the drain water 6 of the drain pan 5 Mold can be killed. Thereby, the clogging of the drain pump 4 caused by the viscosity of bacteria and mold can be eliminated.

  Also, by attaching a part of the mold resin 2a-2, 2b-2 of the high voltage electrode 2a and the ground electrode 2b to the engaging portion 2a-4 having a boss shape or a claw shape, it is easy to attach to the electrode mounting member 12. In addition, other members for mounting are reduced.

  Further, during the cooling operation or the dehumidifying operation, the sterilizing device 1 is operated continuously for a long time so that the ratio of the operating time of the sterilizing device 1 to the cooling operation or the dehumidifying operation time is 50% or more. In addition, it is possible to suppress the waste of electricity costs due to the above and to extend the life of the electronic components of the substrate 14 and the discharge electrode 2.

  Further, by continuing to sterilize the drain water 6 by operating the sterilizer 1 for a certain period of time after stopping the cooling operation or the dehumidifying operation, it is possible to effectively suppress the propagation of bacteria in the drain pan 5.

Embodiment 2. FIG.
In the first embodiment described above, the high voltage electrode 2a and the ground electrode 2b of the sterilizer 1 are attached to the drain pump 4 and are considered to be installed in the ceiling-embedded air conditioner 100 from the beginning. However, a second embodiment that is assumed to be retrofitted from the outside of the ceiling-embedded air conditioner 100 will now be described.

  FIG. 10 is a diagram showing a method for attaching the discharge electrode 2 and the like to the ceiling-embedded air conditioner 100 as a retrofit.

  As shown in FIG. 10, a discharge electrode supported by an electrode mounting member 12 having a mounting hole 13 opened locally in a housing 20 made of an outer sheet metal 9 and a heat insulating material 10 of a ceiling-embedded air conditioner 100. 2 can be attached from the outside of the housing 20.

  The electrode installation member 12 is fixed to the outer sheet metal 9 of the housing 20 with screws or the like, for example.

  As described above, since the electrodes can be installed from the outside of the air conditioner with the air conditioner installed, the electrodes can be installed without disassembling the air conditioner, and the air conditioner can be installed for a certain period of time. It is possible to cope with drain clogging that occurs after use by retrofitting.

Embodiment 3 FIG.
In the first and second embodiments, the high voltage electrode 2a and the ground electrode 2b are separately formed by molding with the mold resins 2a-2 and 2b-2, respectively, but only the tip of the electrode secures the creepage distance. In addition, the high breakdown voltage electric wire 2a-3 and the electric wire 2b-3 side may be integrated.

  FIG. 11 shows the discharge electrode 2 in which the high voltage electrode 2a and the ground electrode 2b are integrated.

  As shown in FIG. 11, the discharge electrode 2 has a connection portion between the high voltage electrode 2a-1 and the wire 2b-3 around the electrode 2a-1 of the high voltage electrode 2a and the electrode 2b-1 of the ground electrode 2b. In addition, it is molded by a common mold resin 2c.

  For example, the tip of the electrode 2a-1 is exposed in water, but does not protrude from the mold resin 2c. Further, for example, the tip of the electrode 2b-1 is exposed in water. The tip protrudes several millimeters from the mold resin 2c.

  If the creepage distance L between the electrode 2a-1 (tip portion) of the high-voltage electrode 2a and the electrode 2b-1 (tip portion) of the ground electrode 2b is ensured to be 10 mm or more, the mold resin 2c is not tracked. Discharge in water.

  Therefore, if the creeping distance between the electrode 2a-1 (tip portion) of the high voltage electrode 2a and the electrode 2b-1 (tip portion) of the ground electrode 2b is ensured, the high voltage electric wire 2a-3 and the electric wire 2b- The three sides may be integrated.

  As described above, since the high voltage electrode 2a and the ground electrode 2b are integrated, the number of parts can be reduced.

FIG. 5 shows the first embodiment, and is a perspective view of the state in which the ceiling-embedded air conditioner 100 (indoor unit) is attached to the ceiling of the room 45 as viewed from the room 45. FIG. FIG. 3 shows the first embodiment and is a cross-sectional view of the ceiling-embedded air conditioner 100. FIG. FIG. 3 is a diagram showing the first embodiment and is a conceptual diagram showing the arrangement of the drain pump 4 and the like in the ceiling-embedded air conditioner 100. FIG. FIG. 3 is a diagram showing the first embodiment, and is a longitudinal sectional view of the ceiling-embedded air conditioner 100. FIG. 3 shows the first embodiment and is a configuration diagram showing an internal configuration of a drain pan 5 provided with a sterilizer 1. FIG. 3 shows the first embodiment, and shows a method for fixing the drain pump 4 and the discharge electrode 2 to the housing 20. FIG. 3 is a diagram showing the first embodiment, and is a perspective view showing a state in which a discharge electrode 2 and the like are attached to a drain pump 4. FIG. 3 is a diagram illustrating the first embodiment and is a schematic configuration diagram illustrating a sterilization apparatus 1. FIG. 5 shows the first embodiment and is an external view showing the shape of a high-voltage electrode 2a. The figure which shows Embodiment 2 and the figure which shows the method of attaching the discharge electrode 2 grade | etc., To the ceiling embedded type air conditioner 100 by retrofitting. The figure which shows Embodiment 3, and is a figure which shows the discharge electrode 2 which integrated the high voltage electrode 2a and the ground electrode 2b.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 Sterilizer, 2 Discharge electrode, 2a High voltage electrode, 2a-1 electrode, 2a-2 Mold resin, 2a-3 High voltage electric wire, 2a-4 Engagement part, 2b Ground electrode, 2b-1 electrode, 2b-2 Mold resin, 2b-3 electric wire, 2c mold resin, 3 high voltage power supply, 4 drain pump, 4a suction port, 5 drain pan, 6 drain water, 7 heat exchanger, 8 drain water level sensor, 9 outer sheet metal, 10 heat insulating material, 11 Drain pump mounting member, 11a Notch, 12 Electrode mounting member, 13 Mounting hole, 14 Substrate, 20 Housing, 30 Blower, 30a Fan, 30b Fan motor, 38 Grill, 40 Main body outlet, 45 Room, 47 Cosmetic panel 48 air outlets, 49 vanes, 50 bell mouths, 100 ceiling-embedded air conditioners.

Claims (12)

In an air conditioner including a heat exchanger, a drain pan that receives condensed water generated from the heat exchanger, and a drain pump that discharges the drain water accumulated in the drain pan.
Installed in the drain pan, comprising a sterilizer comprising the following elements:
(1) At least a pair of discharge electrodes paired with a high voltage electrode and a ground electrode disposed opposite to the high voltage electrode with a predetermined gap;
(2) A high-voltage power supply that applies a negative high-voltage pulse having a high voltage sufficient to cause dielectric breakdown and thereby cause discharge in the discharge electrode;
The entire surface of the high voltage electrode is covered with the mold resin, and the end surface of the tip portion of the high voltage electrode and the end surface of the tip portion of the mold resin are the same surface and the high voltage electrode is covered with the high voltage electrode. The structure is such that the tip of the voltage electrode is exposed,
The air conditioner is characterized in that the ground electrode is covered with the mold resin, and a tip protrudes a predetermined length from the mold resin .   The air conditioner according to claim 1, wherein the discharge electrode is provided in the vicinity of the drain pump, and is installed so that at least a tip portion of the discharge electrode is immersed in the drain water.   The air conditioner according to claim 1 or 2, wherein the discharge electrode is fixed to the drain pump.   A housing having an outer sheet metal is provided, a mounting hole is opened in the housing, and the discharge electrode supported by an electrode installation member is attached later from the mounting hole of the housing after the air conditioner is installed. The air conditioner according to any one of claims 1 to 3, wherein the air conditioner is configured as described above.   The air conditioner according to claim 4, wherein the electrode installation member is fixed to the casing with a screw or the like.   2. The discharge electrode according to claim 1, wherein at least a tip of the discharge electrode is disposed below a suction port of the drain pump so that a tip of the discharge electrode is immersed in the drain water. The air conditioner according to any one of 5.   The control part which controls the said air conditioner is provided, The said control part operates the said sterilizer intermittently at the time of air_conditionaing | cooling operation or dehumidification operation, The one in any one of Claim 1 thru | or 6 characterized by the above-mentioned. Air conditioner. The control part which controls the said air conditioner is provided, The said control part operates the said sterilizer continuously for a fixed time after cooling operation or dehumidification operation stop, The one of Claim 1 thru | or 7 characterized by the above-mentioned. Air conditioner as described in. A control unit that controls the air conditioner is provided, and a drain water level sensor that detects the water level of the drain water is provided, and the control unit operates the sterilizer when the drain water level sensor detects a constant water level. The air conditioner according to any one of claims 1 to 7 , wherein The high voltage electrode and the ground electrode, an air conditioner according to claim 1, characterized in that it is fixed to the drain pump by engaging portion formed on a part of the molding resin. The air conditioner according to any one of claims 1 to 10 , wherein the high voltage electrode and the ground electrode are configured separately. The high and the voltage electrode and the ground electrode is composed integrally of claims 1 to 11 tip of each of the ground electrode and the high voltage electrode is characterized by a configuration that ensures a predetermined creepage distance An air conditioner according to any one of the above.

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