JP6641182B2 - Ion wind type liquid vaporizer and air conditioner - Google Patents

Description

  The present invention relates to an ion wind type liquid vaporizer for generating ion wind by corona discharge and an air conditioner.

  2. Description of the Related Art Conventionally, there has been known an apparatus for applying a high voltage between a discharge needle and a ground electrode to generate corona discharge and increase ions in a gas.

  For example, the negative ion generator described in Patent Literature 1 includes a needle-like negative electrode and a positive electrode arranged at an interval in a case. The positive electrode has a plurality of openings through which negative ions pass. The aromatic substance is fixed to the positive electrode made of a conductive material by impregnation, kneading, or the like. When a high negative voltage is applied between the two electrodes from the DC power supply, negative ions are generated along with the corona discharge, and aromatic molecules in the positive electrode are released. Then, the negative ions and the aromatic molecules are sent out of the case by operating a fan (blower).

  Further, for example, the air cleaning device described in Patent Literature 2 includes a discharge unit that applies a voltage from a power supply unit to a discharge unit having a discharge electrode and a counter electrode, forms a discharge circuit, and performs corona discharge. The needle-shaped discharge electrode is arranged in a non-contact and orthogonal posture to the flat counter electrode. In addition, the tip of the discharge electrode protrudes the counter electrode. This air cleaning device includes a blowing means (fan) for sending air toward a side surface of the discharge electrode, and an electrostatic atomizing unit disposed downstream of the discharge unit in the blowing direction.

JP 2005-347146 A JP 2014-121424 A

  However, in the negative ion generator described in Patent Literature 1, corona discharge occurs between one negative electrode and a plurality of openings of the positive electrode. Since corona discharge generated at dispersed positions is weakened, there is a problem that the amount of aromatic molecules released into the space is reduced. In addition, since most of the apertures do not face the negative electrode, the electric field varies in each of the apertures. For this reason, the negative ion generator may not be able to efficiently ionize air. In addition, the negative ion generator does not consider replenishing the aromatic substance after exhausting the aromatic substance immobilized on the positive electrode. That is, there is a possibility that permanent release of the aromatic molecules cannot be ensured. Further, since a fan is required to release the negative ions and the aromatic molecules, there is a problem that the size of the negative ion generator is increased and the manufacturing cost is increased.

  Further, in the air cleaning device described in Patent Document 2, since the direction of the ionic wind accompanying the corona discharge and the direction of the blowing by the blowing means intersect, the ionic wind can be efficiently sent out of the device. Did not. Further, since the electrostatic atomizing unit is arranged on the downstream side in the air blowing direction, the humidification efficiency has been deteriorated. Further, since a fan is required to discharge the ionized air, there has been a problem that the size of the apparatus is increased and the manufacturing cost is increased.

  The present invention provides an ion wind type liquid vaporizer and an air conditioner that stabilize an electric field to efficiently ionize air and form an ion wind with a simple configuration in order to solve the above-described problems.

  In order to achieve the above object, a first ion wind type liquid vaporizer of the present invention includes a ground electrode portion formed so as to be able to hold a functional liquid having conductivity, and an electrode extending in a direction intersecting the ground electrode portion. A needle-shaped discharge electrode section provided, and a power supply section for generating a corona discharge by applying a voltage between the ground electrode section and the discharge electrode section, wherein the ground electrode section includes the corona discharge section. Having an opening through which the ion wind generated by the ion beam passes, and the tip of the discharge electrode portion is arranged corresponding to the opening and arranged at a position that is not in contact with the edge of the opening. I have.

  According to the first ion wind type liquid vaporizer of the present invention, ions are generated by corona discharge, and ion wind is generated from the distal end to the proximal end of the discharge electrode. The functional liquid contained in the ground electrode is vaporized by the ionic wind passing through the opening. Here, for example, when the functional liquid contains functional components such as fragrance, sterilization, and deodorization, the functional components are carried to the downstream side in the distribution direction on the ionic wind together with moisture. Thereby, the space on the downstream side in the flow direction of the ion wind can be humidified and can receive the action of the functional component (for example, fragrance imparting, sterilization, deodorization, etc.). Further, since the moisture and the functional components are transported by the ionic wind, a blower fan or the like can be omitted, and the manufacturing cost and power consumption of the device can be reduced. Further, dust, virus, and the like included in the ion wind are collected at the edge of the opening of the ground electrode by an electric field (electric field) generated by corona discharge. Thereby, air can be purified.

  The second ion wind type liquid vaporizer of the present invention is the above-mentioned first ion wind type liquid vaporizer of the present invention, wherein the distal end of the discharge electrode section is located at the upstream side from the downstream side in the flow direction of the ion wind. Through the opening.

  According to the second ion wind type liquid vaporizer of the present invention, since the discharge electrode penetrates the opening, the electric force for generating the corona discharge mainly depends on the tip of the discharge electrode and the opening. (The lines of electric force are dense). Further, the electric force is generated between the body (the portion extending from the distal end to the base end) of the discharge electrode portion and the inner peripheral surface of the opening, and between the body of the discharge electrode portion and the downstream edge of the opening. Also occurs during. Therefore, the functional liquid is vaporized from the front and rear edges including the inner peripheral surface of the opening. Thereby, the vaporization efficiency of the functional liquid can be improved.

  A third ion wind type liquid vaporizer of the present invention is the above-mentioned first or second ion wind type liquid vaporizer of the present invention, wherein the ground electrode portion is formed of a porous material having electrical insulation. ing.

  According to the third ion wind type liquid vaporizer of the present invention, since the ground electrode portion is formed of the porous material, the functional liquid can be appropriately held. Here, if all the functional liquids are vaporized, the corona discharge stops because the ground electrode portion has electrical insulation. That is, corona discharge is automatically prohibited due to the complete consumption of the functional liquid. This can ensure the safety of the device when the functional fluid is depleted. Further, a device for detecting the depletion of the functional fluid and a device for stopping the power supply unit can be omitted.

  A fourth ion wind type liquid vaporizer according to the present invention is the ion wind type liquid vaporizer according to any one of the first to third aspects of the present invention described above, wherein the power supply unit is controlled to adjust the applied voltage. A control unit is further provided.

  According to the fourth ion wind type liquid vaporizer of the present invention, the flow rate (wind speed) of the ion wind is changed by the control section adjusting the voltage (applied voltage) applied between the two electrode sections from the power supply section. can do. By adjusting the strength of the ion wind, the vaporization rate of the functional liquid can be adjusted. This makes it possible to easily control the humidification amount (moisture supply amount) only by controlling the applied voltage.

  A fifth ion wind type liquid vaporizer of the present invention is the ion wind type liquid vaporizer according to any of the first to fourth aspects of the present invention, wherein the functional liquid to be supplied to the ground electrode portion can be stored. It further includes a supply unit configured.

  According to the fifth ion wind type liquid vaporizer of the present invention, since the functional liquid is supplied from the supply unit to the ground electrode unit, the ion wind type liquid vaporizer can be continuously operated for a long period of time. . Further, for example, when it is desired to change the functional component of the functional liquid held in the ground electrode unit, the functional liquid stored in the supply unit may be changed. Thus, the functional components of the functional liquid can be easily changed.

  A sixth ion wind type liquid vaporizer according to the present invention is the ion wind type liquid vaporizer according to any one of the first to fifth aspects of the present invention, further comprising an ultraviolet irradiation unit for irradiating ultraviolet rays to the ground electrode unit. Have.

  According to the sixth ion wind type liquid vaporizer of the present invention, it is possible to effectively inactivate the virus collected on the ground electrode portion by the high voltage and the ultraviolet light irradiated from the ultraviolet light irradiating portion.

  A seventh ion wind type liquid vaporizer according to the present invention is the ion wind type liquid vaporizer according to any of the first to sixth aspects of the present invention, wherein the ground electrode portion contains a chlorine component or vitamin C. Hold the functional liquid.

  According to the seventh aspect of the invention, the chlorine-based component as a functional component of the functional liquid inactivates the virus. A more effective virus inactivation effect can be exhibited by a combination of a chlorine-based component of the functional liquid and a high voltage (and an ultraviolet irradiation part). Vitamin C as a functional component of the functional liquid suppresses the generation of ozone during corona discharge.

  An air conditioner of the present invention is an air conditioner including the ion wind type liquid vaporizer according to any of the first to seventh aspects, wherein the ion wind type liquid vaporizer has an inlet and an outlet. The ionic wind is provided inside a housing having the ionic air, and the air sucked into the housing through the air inlet generates the ionic wind containing ions, and the ionic wind is blown out of the housing through the exhaust port.

  According to the air conditioner of the present invention, the ionic wind generated due to the corona discharge vaporizes the functional liquid contained in the ground electrode when passing through the opening. Thereby, the functional components (for example, components such as aroma, sterilization, and deodorization) of the functional liquid can be carried on the ionic wind together with the moisture and carried to the space on the downstream side in the distribution direction. In addition, since moisture and functional components can be transported by ionic wind without using a blower fan or the like, manufacturing costs and power consumption of the apparatus can be reduced. Further, the generation of an electric field allows dust, viruses, and the like to be collected on the ground electrode portion.

  ADVANTAGE OF THE INVENTION According to this invention, an electric field can be stabilized and ionization of air can be performed efficiently. In addition, it is possible to form an ion wind with a simple configuration by omitting a blower fan and the like.

It is a sectional view showing typically the internal structure of the air conditioner concerning one embodiment of the present invention. It is a sectional view showing typically an ion wind type liquid vaporizer concerning one embodiment of the present invention. FIG. 3 is a sectional view taken along line III-III of FIG. 1. It is sectional drawing which shows typically the supply part of the ion wind type liquid vaporizer which concerns on one Embodiment of this invention. It is a block diagram showing the control part of the ion wind type liquid vaporizer concerning one embodiment of the present invention. It is a flowchart explaining the air conditioning process of the air conditioner which concerns on one Embodiment of this invention. It is a perspective view showing an operation of an ion wind type liquid vaporizer concerning one embodiment of the present invention.

  Hereinafter, embodiments of an air conditioner including an ion wind type liquid vaporizer according to the present invention will be described with reference to the accompanying drawings. This embodiment is a preferred specific example of the present invention, and may have various technically preferable limitations, but the technical scope of the present invention is not limited unless there is a description that particularly limits the present invention. It is not limited to these embodiments.

  With reference to FIG. 1, an overall configuration of an air conditioner 1 according to the present embodiment will be described. FIG. 1 is a cross-sectional view schematically illustrating the internal structure of the air conditioner 1. In the following description, for convenience, each direction is set as indicated by an arrow in each drawing.

  The air conditioner 1 purifies air taken in from the outside, and discharges the purified air to the outside together with ions. The air conditioner 1 includes a substantially rectangular parallelepiped housing 2 having an intake port 3 and an exhaust port 4. The intake port 3 is formed at the lower part of the front surface of the housing 2, and the exhaust port 4 is formed at the upper surface of the housing 2. The intake port 3 is provided to take in external air into the housing 2. A filter 5 that captures dust (relatively large particles) in the air is provided inside the air inlet 3. The exhaust port 4 is provided for discharging the air in the housing 2 to the outside.

  The air conditioner 1 includes an operation unit 6 and an ion wind type liquid vaporizer 7. The operation unit 6 is provided on a front surface of the housing 2. The ion wind type liquid vaporizer 7 is provided inside the housing 2.

  The operation unit 6 includes a front panel 10, a display unit 11, and a switch 12. The front panel 10 is fixed to an upper front part of the housing 2. The display unit 11 and the switch 12 are incorporated in the front panel 10. The display unit 11 includes, for example, a liquid crystal screen (touch panel), an LED indicating an operation state, and the like. The switch 12 includes, for example, a switch for various settings and an operation switch for turning on / off a power supply unit 21 (described later).

  Next, with reference to FIGS. 1 to 5, the ion wind type liquid vaporizer 7 will be described. FIG. 2 is a cross-sectional view schematically showing the ion wind type liquid vaporizer 7. FIG. 3 is a sectional view taken along line III-III of FIG. FIG. 4 is a cross-sectional view schematically showing the supply section 23 of the ion-wind type liquid vaporizer 7. FIG. 5 is a block diagram showing the control unit 25 of the ion-wind type liquid vaporizer 7.

  The ion wind type liquid vaporizer 7 generates an ion wind in which the air sucked into the casing 2 from the intake port 3 contains negative ions, and blows the ion wind out of the casing 2 from the exhaust port 4. The ion wind type liquid vaporizer 7 generates an ion wind by corona discharge. In the following description, the “flow direction” indicates the direction in which the ion wind flows. In addition, “upstream” and “downstream” and similar terms refer to “upstream” and “downstream” and similar concepts in the flow direction of the ion wind.

  As shown in FIG. 1, the ion-wind-type liquid vaporizer 7 includes a charging unit 20, a power supply unit 21, an ultraviolet irradiation unit 22, a supply unit 23, a humidity and fragrance detection unit 24, and a control unit 25. Contains.

  The charging unit 20 includes a frame 30, a ground electrode unit 31, a support substrate 32, and a plurality (for example, three in FIG. 1) of discharge electrode units 33. The frame 30 is supported by an internal frame (not shown) of the housing 2. The ground electrode portion 31 and the plurality of support substrates 32 are supported inside the frame body 30, respectively. Each of the plurality of discharge electrode portions 33 is supported on the support substrate 32 in a cantilever manner.

  The frame body 30 is formed in a substantially rectangular ring shape (frame shape) when viewed from a plane. The frame 30 is supported by the internal frame via an insulator (not shown) having electrical insulation. That is, the frame 30 is supported in a state of being electrically insulated from the housing 2. A power supply member (not shown) for connecting the power supply unit 21 is formed in the frame 30.

  As shown in FIG. 2 and FIG. 3, the ground electrode portion 31 is formed in a substantially rectangular flat plate shape when viewed from a plane. The ground electrode portion 31 is arranged inside the frame 30 so as to divide the internal space of the housing 2 into two in the vertical direction (see FIG. 1). The ground electrode part 31 is fixed to the frame 30 in a direction crossing (orthogonal to) the flow direction (vertical direction) of the ion wind. By arranging the ground electrode section 31 substantially horizontally, the height of the housing 2 can be kept low. Thereby, the size of the air conditioner 1 (housing 2) can be reduced.

  Further, the ground electrode section 31 is electrically connected to a ground line GL (reference potential point). The ground electrode part 31 is formed of a porous material having electrical insulation. For example, the ground electrode section 31 is formed of a relatively hard sponge such as urethane foam, zeolite, or the like. The ground electrode section 31 is formed so as to be able to hold a functional liquid having conductivity. That is, the ground electrode portion 31 made of a porous body retains (absorbs) the functional liquid by replacing the air in the holes with the functional liquid.

  Here, the functional liquid is composed of water (excluding pure water) or water mixed with functional components such as aroma, sterilization, and deodorization. Further, the functional liquid contains at least one of a chlorine component, vitamin C, and an aromatic component as functional components. The functional liquid has conductivity by containing moisture. Therefore, the ground electrode portion 31 functions as an electrode while holding the functional liquid. The chlorine-based component is preferably a salt (salt (NaCl)) in consideration of human safety and bactericidal action, for example. The fragrance component is preferably, for example, a scented aroma oil.

  The ground electrode section 31 has a plurality (for example, three in FIG. 1) of openings 34 through which ion wind generated by corona discharge passes. Each opening 34 is formed in a circular shape when viewed from a plane. Each opening portion 34 is formed in the ground electrode portion 31 so as to communicate the internal space of the housing 2 divided into two parts in the vertical direction. Each opening 34 is set, for example, to a diameter of about 15 mm. The plurality of openings 34 are arranged side by side at predetermined intervals in the front-rear direction.

  The ground electrode portion 31 is covered with an insulating cover 36 having electrical insulation. The insulating cover 36 covers the entire ground electrode 31 except for the edge 35 of each opening 34. That is, the edge 35 of each opening 34 is exposed from the insulating cover 36. The exposed area of each edge 35 is larger on the upstream side than on the downstream side in the flow direction. That is, of the upper and lower edges 35 of each opening 34, the lower edge 35 is more exposed from the insulating cover 36 than the upper edge 35. In the following description, the lower edge 35 of each opening 34 is referred to as “upstream edge 35U”, and the upper edge 35 is referred to as “downstream edge 35D”. Further, in the description common to the upper and lower edges 35, it is simply referred to as the edge 35.

  The lower insulating cover 36 is provided to be spaced downward from the lower surface of the ground electrode portion 31. The insulating cover 36 has a plurality of bent portions 36a that are bent so as to contact the upstream edge 35U of each opening 34. A space is formed between the lower surface of the ground electrode portion 31 and the insulating cover 36 by the plurality of bent portions 36a. Although details will be described later, this space is used as a liquid storage section 37 for temporarily storing the functional liquid.

  As shown in FIGS. 1 and 2, the support substrate 32 is made of a conductive material and formed in a flat plate shape that is long in the front-rear direction when viewed from the side. The support substrate 32 is arranged above the ground electrode unit 31 (downstream in the flow direction). The support substrate 32 is arranged along a plurality of openings 34 arranged in a line. Each support substrate 32 is supported by the frame 30 via a spring (not shown).

  As shown in FIG. 3, both side surfaces of the support substrate 32 are orthogonal to the ground electrode portion 31 when viewed from the front. That is, the support substrate 32 is arranged in parallel with the direction of flow of the ion wind. As shown in FIGS. 2 and 3, on one side surface of the support substrate 32, a plurality (for example, three places (see FIG. 1)) of a pair of upper and lower caulking portions 32a are arranged in the front-rear direction. The pair of upper and lower caulking portions 32 a are formed corresponding to the openings 34. Note that the support substrate 32 may not be orthogonal to the ground electrode unit 31 as long as the support substrate 32 is arranged so as not to obstruct the flow of the ion wind.

  As shown in FIGS. 1 to 3, the plurality of discharge electrode portions 33 are provided corresponding to the openings 34. Since the plurality of discharge electrode portions 33 have the same shape, only one discharge electrode portion 33 will be described below.

  The discharge electrode portion 33 is formed of, for example, a titanium alloy (so-called 64 titanium) such as a JIS 60 alloy (6% Al + 4% V + 90% Ti). The discharge electrode portion 33 is formed, for example, in the shape of a fine line or a needle having a diameter of 0.5 mm to 0.6 mm. The tip 33a (lower end) of the discharge electrode 33 is polished in a conical shape. The tip portion 33a of the discharge electrode portion 33 has a diameter of, for example, 0.05 mm to 0.15 mm. By employing 64 titanium having excellent toughness as the material of the discharge electrode portion 33, it is possible to suppress the breakage of the joint between the discharge electrode portion 33 and the support substrate 32, and to improve the durability of the discharge electrode portion 33. Can be.

  As shown in FIGS. 2 and 3, the discharge electrode portion 33 is caulked by a pair of upper and lower caulking portions 32 a and is fixed to the support substrate 32. A base end portion 33c (upper end portion) of the discharge electrode portion 33 is supported by a pair of upper and lower caulking portions 32a in a cantilever manner. The discharge electrode portion 33 extends from the caulking portion 32a toward the ground electrode portion 31 (upstream in the flow direction from the support substrate 32). That is, the discharge electrode portion 33 extends in a direction intersecting (perpendicular to) the ground electrode portion 31. The distal end portion 33a of the discharge electrode portion 33 is arranged corresponding to the opening portion 34 and at a position that is not in contact with the edge 35 of the opening portion 34.

  The distal end portion 33a of the discharge electrode portion 33 passes through the opening 34 from the downstream side in the flow direction to the upstream side. As shown in FIG. 3, the interval (first discharge gap G1) between the tip 33a of the discharge electrode 33 and the upstream edge 35U of the opening 34 is kept constant. The interval (second discharge gap G2) between the body portion 33b of the discharge electrode portion 33 (the intermediate portion between the distal end portion 33a and the base end portion 33c) and the downstream edge portion 35D (the inner peripheral surface 34i) of the opening portion 34 is It is kept constant. In the present embodiment, for example, the first and second discharge gaps G1 and G2 are each set in a range of about 10 mm to 20 mm. The first and second discharge gaps G1 and G2 are respectively set to the thickness of the discharge electrode 33, the size of the opening 34, the magnitude of the applied voltage, and the edge 35 of the discharge electrode 33 and the opening 34. It is preferable to set in consideration of the amount of dirt deposited.

  By using the above-described discharge electrode unit 33, the amount of generated ozone can be significantly reduced. Further, by employing such a discharge electrode portion 33, excellent workability and stable discharge can be secured. Further, the amount of wear of the discharge electrode portion 33 is suppressed, and the life can be extended. In addition, since the tip portion 33a of the discharge electrode portion 33 where strong corona discharge occurs becomes less likely to be stained, stable discharge can be continuously performed.

  The power supply unit 21 is connected to an AC commercial power supply (not shown). Further, the power supply unit 21 is connected to the ground electrode unit 31 and the frame 30 (power supply member). The power supply unit 21 is electrically connected to the discharge electrode unit 33 via the frame 30 and the support substrate 32 (see FIGS. 2 and 3). The power supply unit 21 converts an alternating current into a direct current, and supplies electric power to the components of the operation unit 6 and the ion wind type liquid vaporizer 7. The power supply unit 21 generates a high voltage of several kV to several tens kV. In the present embodiment, the discharge electrode 33 is a negative electrode (negative charging method). Note that a power supply cooling fan 21 a (see FIG. 5) for cooling the power supply unit 21 is provided in the housing 2.

  As shown in FIGS. 1 and 3, the ultraviolet irradiation unit 22 is disposed above the ground electrode unit 31 (downstream in the flow direction). The ultraviolet irradiation unit 22 is provided so as to irradiate each opening 34 of the ground electrode unit 31 and its edge 35 with ultraviolet light. The ultraviolet irradiation unit 22 employs a lamp (not shown) that emits short-wave ultraviolet rays (section UV-C) having a wavelength of 100 to 280 nm, which is effective for sterilization.

  As shown in FIGS. 3 and 4, the supply unit 23 includes a storage tank 40, a water level sensor 41, a connection pipe 42, and an adjustment float 43. The supply unit 23 is configured to be able to store a functional liquid to be supplied to the ground electrode unit 31.

  The storage tank 40 is disposed above the ground electrode unit 31 (downstream in the flow direction). The storage tank 40 has a functional liquid stored inside the storage tank 40, which is arranged at the rear part of the housing 2. A cover (not shown) is provided at the rear of the housing 2 so as to be openable and closable, and is configured so that the storage tank 40 can be refilled with the functional liquid by opening the cover.

  The water level sensor 41 detects the storage amount (upper limit / lower limit) of the functional liquid in the storage tank 40. The water level sensor 41 has, for example, two electrodes (not shown) that can conduct when contacting the functional liquid. When sufficient functional liquid exists in the storage tank 40, conduction between the two electrodes is established. When the amount of the functional liquid in the storage tank 40 decreases, conduction between the two electrodes stops. That is, the water level sensor 41 detects the amount of storage of the functional liquid by detecting the presence or absence of conduction between the two electrodes.

  The connection pipe 42 is connected between the storage tank 40 and the insulating cover 36 of the ground electrode unit 31. The upper end (upstream side) of the connection pipe 42 communicates with the inside of the storage tank 40. A lower end portion (downstream side) of the connection pipe 42 communicates with a liquid storage portion 37 formed below the ground electrode portion 31.

  The adjustment float 43 is provided at a lower end (downstream end) of the connection pipe 42. The adjustment float 43 floats on the functional liquid stored in the liquid storage 37. The adjustment float 43 has a tapered surface 43 a that can be in close contact with the lower end surface of the connection pipe 42.

  As shown in FIG. 4, when the water level of the functional liquid in the liquid storage section 37 is lower than a predetermined height, the adjustment float 43 also goes down. Therefore, the tapered surface 43 a of the adjustment float 43 is separated downward from the lower end surface of the connection pipe 42. Thereby, the functional liquid stored in the storage tank 40 flows into the liquid storage section 37 through the connection pipe 42. As shown in FIG. 3, when the level of the functional liquid in the liquid storage section 37 rises, the adjustment float 43 also rises. Then, the tapered surface 43 a of the adjustment float 43 comes into close contact with the lower end surface of the connection pipe 42 and closes the connection pipe 42. Thereby, the inflow of the functional liquid into the liquid storage section 37 is stopped. As described above, the adjustment float 43 adjusts the supply amount of the functional liquid to the liquid storage unit 37. Note that the specified height of the water surface of the functional liquid in the liquid storage section 37 indicates a state in which the ground electrode section 31 is immersed in the functional liquid. In this state, the functional liquid in the liquid storage unit 37 is absorbed by the ground electrode unit 31.

  As shown in FIGS. 1 and 3, the humidity and fragrance detecting section 24 is disposed in the housing 2 at the upper front side. The humidity / fragrance detection unit 24 detects the humidity inside the housing 2 and also detects the concentration of the fragrance component contained in the vaporized functional liquid.

  As shown in FIG. 5, the control unit 25 includes a CPU 50, a storage unit 51, a bus 52, and an interface unit 53. The control unit 25 controls each component of the air conditioner 1.

  The CPU 50 (Central Processing Unit) executes various arithmetic processes according to data, programs, and the like stored in the storage unit 51. The CPU 50 receives the information input via the operation unit 6 and causes the storage unit 51 to temporarily store the information. The storage unit 51 stores data, programs, and the like necessary for controlling the air conditioning apparatus 1 (air conditioning processing). The bus 52 electrically connects the CPU 50, the storage unit 51, and the interface unit 53. The display section 11, the switch 12, the ultraviolet irradiation section 22, the water level sensor 41, the power supply section 21, the power supply cooling fan 21a, the humidity and fragrance detection section 24, and the like are electrically connected to the interface section 53. Thus, the CPU 50 can transmit and receive various control signals to and from each component connected to the interface unit 53.

  Here, with reference to FIG. 6 and FIG. 7, an operation (air conditioning process) of the air conditioner 1 (ionic wind type liquid vaporizer 7) will be described. FIG. 6 is a flowchart illustrating the air conditioning process of the air conditioning apparatus 1. FIG. 7 is a perspective view showing the operation of the ionic wind type liquid vaporizer 7.

  As shown in FIG. 6, the control unit 25 (CPU 50) determines whether or not the switch 12 (operation switch) of the operation unit 6 is turned on (S1). The control unit 25 repeats step S1 until the switch 12 is turned on ("NO" in S1).

  When performing the air conditioning process, the user turns on the switch 12. Then, control unit 25 (CPU 50) detects that switch 12 has been turned ON ("YES" in S1). Subsequently, the control unit 25 receives the detection result of the water level sensor 41, and determines whether or not the functional liquid within the specified range (from the lower limit to the upper limit) is stored in the storage tank 40 (S2). The “specified range” indicates, for example, a state where the two electrodes of the water level sensor 41 are electrically connected. When the detection result of the water level sensor 41 is within the specified range (“YES” in S2), the power supply unit 21 is controlled by the control unit 25, and a high voltage is applied between the ground electrode unit 31 and the discharge electrode unit 33. Is applied (S3).

  On the other hand, when the detection result of the water level sensor 41 is out of the specified range (“NO” in S2), the control unit 25 causes the display unit 11 to output (display) information indicating an error (S11). In addition, for example, it is preferable that error information that prompts the user to replenish the storage tank 40 with the functional liquid is displayed on the display unit 11. The control unit 25 receives the detection result of the water level sensor 41 again, and determines whether or not the water level (storage amount) in the storage tank 40 is within a specified range (S12). Thereafter, the control unit 25 repeats the determination in step S12 until receiving a detection result indicating that the water level in the storage tank 40 is within the specified range ("NO" in S12). On the other hand, when the detection result of the water level sensor 41 is within the specified range (“YES” in S12), the control unit 25 stops the error output (S13) and controls the power supply unit 21 to output a high voltage. (S3).

  Here, the ground electrode section 31 holding the functional liquid and each discharge electrode section 33 form a discharge closed circuit by corona discharge. The power supply section 21 applies a high voltage between the ground electrode section 31 and each discharge electrode section 33 to generate corona discharge. That is, corona discharge (negative corona) is generated by an electric force (electric field) generated between the two poles 31 and 33. By this corona discharge, a substantially hemispherical charging area EA is formed between the tip 33a of each discharge electrode 33 and the upstream edge 35U of the opening 34 (see FIG. 7).

  Since each of the discharge electrode portions 33 penetrates through the opening 34, the electric force (electric field) for generating corona discharge is mainly caused by the distal end portion 33a of each of the discharge electrode portions 33 and the upstream edge 35U of each of the opening portions 34. (See the lines of electric force indicated by alternate long and short dash lines in FIGS. 2 and 3). That is, the electric force is the strongest between the distal end 33a of each discharge electrode 33 and the upstream edge 35U of each opening 34 (the lines of electric force are most dense). This electric force is also generated between the body 33b of the discharge electrode 33 and the inner peripheral surface 34i of the opening 34 and between the body 33b and the downstream edge 35D of the opening 34 ( 2 and 3).

  Further, due to the corona discharge, negative ions in the air increase, and an air current (ion wind) flowing along the lines of electric force is generated. Therefore, the ion wind flows through each opening 34 from the lower side of the ground electrode section 31 to the upper side.

  When the ionic wind as described above is generated, the pressure in the housing 2 decreases, so that outside air is sucked into the housing 2 from the air inlet 3. Fine dust, virus and the like (hereinafter referred to as “dust and the like”) contained in the outside air are caused by the action of an electric force (electric field) due to corona discharge, and the edge 35 and the inner periphery of each opening 34 of the ground electrode section 31. It is collected on the surface 34i. The reason why the upstream edge 35U of each opening 34 is formed wider than the downstream edge 35D is to collect a large amount of dust and the like in a portion where the electric force works most strongly.

  Further, the electric force moves the functional liquid permeated into the ground electrode portion 31 to the surface layer. The ionic wind vaporizes the functional liquid that has permeated the edges 35 of the openings 34 exposed from the insulating cover 36. As described above, since the electric force acts from each of the discharge electrode portions 33 (excluding the base end portion 33c) to the vicinity of each of the openings 34, the functional liquid includes the inner peripheral surface 34i of each of the openings 34. It vaporizes from the edges 35U and 35D on both sides. Thereby, the vaporization efficiency of the functional liquid can be improved. In addition, since the ion wind mainly flows from the tip 33a of each discharge electrode 33 toward the ground electrode 31 (each opening 34), the surface layer of the ground electrode 31 (the edge 35 of each opening 34) is formed. Can be efficiently vaporized. In addition, the heat at the time of corona discharge also promotes the vaporization of the functional liquid.

  The vaporized functional liquid (moisture and functional components) is sent upward (downstream in the distribution direction) on the ionic wind. Then, the vaporized functional liquid and negative ions are exhausted to the outside through the exhaust port 4 together with clean air (air from which dust and the like have been removed) (see FIG. 1). Note that the functional liquid that has soaked into the ground electrode portion 31 moves so as to be drawn to the edge 35 of each opening 34 along with the vaporization. Therefore, the functional liquid can be automatically supplied to the edge 35 of each opening 34 exposed from the insulating cover 36.

  When the functional liquid contains a chlorine-based component as a functional component, the chlorine-based component inactivates the virus. A more effective virus inactivating effect can be exhibited by the combination of the chlorine-based component of the functional liquid with high voltage and ultraviolet light. Further, when the functional liquid contains vitamin C as a functional component, the vitamin C suppresses the generation of ozone during corona discharge.

  Subsequently, the ultraviolet irradiation unit 22 is controlled by the control unit 25 to irradiate the ground electrode unit 31 (each opening 34) with ultraviolet light (S4). This makes it possible to effectively inactivate the virus trapped on the ground electrode portion by the high voltage and the ultraviolet light irradiated from the ultraviolet light irradiation portion. That is, in addition to the high voltage, it is possible to superimpose the inactivating action of the virus due to the ultraviolet rays. Also, bacteria contained in dust and the like can be sterilized.

  Next, the control unit 25 receives the detection result of the humidity and fragrance detection unit 24, and determines whether or not the humidity in the housing 2 is within a set range (S5). The setting range of the humidity is appropriately set according to the use conditions of the air conditioner 1 and is stored in the storage unit 51 of the control unit 25. When the detection result of the humidity / fragrance detection unit 24 is within the set range (“YES” in S5), the control unit 25 receives the detection result of the water level sensor 41 again, and the water level in the storage tank 40 is within the specified range. Is determined (S6). If the detection result of the water level sensor 41 is within the specified range ("YES" in S6), the control unit 25 repeats steps S5 and S6 until the switch 12 (operation switch) is turned off ("S7"). NO ").

  When stopping the air conditioning process, the user turns off the switch 12. When detecting that the switch 12 has been turned off (“YES” in S7), the control unit 25 executes stop control of the ultraviolet irradiation unit 22 (stops irradiation of ultraviolet light) (S8), and stops the power supply unit 21. The control is executed (S9). Thus, the air conditioning process is stopped.

  Next, when the detection result of the humidity and fragrance detection unit 24 is out of the set range (“NO” in S5), the control unit 25 controls the power supply unit 21 to adjust the applied voltage. The control unit 25 determines whether the detection result of the humidity and fragrance detection unit 24 is lower than the set range (S21). Note that the control unit 25 may determine whether the humidity is higher than the set range.

  When the humidity is lower than the set range ("YES" in S21), the control unit 25 performs control to increase the output of the power supply unit 21 (S22). Thereby, the potential difference between the ground electrode portion 31 and each discharge electrode portion 33 increases. And the control part 25 judges the detection result of the humidity fragrance detection part 24 again (S5). On the other hand, when the humidity is higher than the set range ("NO" in S21), the control unit 25 performs control to decrease the output of the power supply unit 21 (S23). Thereby, the potential difference between the ground electrode section 31 and each discharge electrode section 33 is reduced. And the control part 25 judges the detection result of the humidity fragrance detection part 24 again (S5).

  As described above, the control section 25 adjusts the voltage (applied voltage) applied between the two electrode sections 31 and 33 from the power supply section 21 to change the flow velocity (wind velocity) of the ion wind. By adjusting the strength of the ion wind, the vaporization rate of the functional liquid can be adjusted. This makes it possible to easily control the humidification amount (moisture supply amount) only by controlling the applied voltage.

  Next, when the detection result of the water level sensor 41 is out of the specified range ("NO" in S6), the control unit 25 causes the display unit 11 to output (display) information indicating an error (S31). The control unit 25 executes stop control of the ultraviolet irradiation unit 22 (S32), and executes stop control of the power supply unit 21 (S33). Subsequently, the control unit 25 receives the detection result of the water level sensor 41 again, and determines whether or not the water level in the storage tank 40 is within a specified range (S34). Thereafter, the control unit 25 repeats the determination in step S34 until receiving a detection result indicating that the water level in the storage tank 40 is within the specified range ("NO" in S34). On the other hand, when the detection result of the water level sensor 41 is within the specified range ("YES" in S34), the control unit 25 stops the error output (S35) and controls the power supply unit 21 to output a high voltage. (S3).

  According to the above-described ion wind type liquid vaporizer 7 (air conditioner 1) according to the present embodiment, negative ions are generated by corona discharge, and the discharge electrode 33 is moved from the distal end 33a to the proximal end 33c. Ion wind is generated toward it. The functional liquid contained in the ground electrode unit 31 is vaporized by the ionic wind passing through each opening 34. Functional components (for example, components such as fragrance, sterilization, and deodorization) contained in the functional liquid are carried downstream along the flow direction along with ionic wind along with moisture. Thereby, the external space of the housing 2 can be humidified and receive the action of the functional component (for example, fragrance imparting, sterilization, deodorization, etc.). Further, since the moisture and the functional components are transported by the ionic wind, a blowing fan or the like can be omitted, and the manufacturing cost and power consumption of the device can be reduced. Further, dust, virus, and the like included in the ion wind are collected on the edge 35 of each opening 34 of the ground electrode 31 by an electric field (electric field) generated by corona discharge. Thereby, air can be purified.

  Note that the vaporized water diffuses over a wide area due to repulsion due to electrostatic force, in addition to the effect of mere miniaturization. Further, the vaporized water is charged, and thus is attracted to the ground side. For this reason, even in a narrow space that does not enter by ordinary diffusion, vaporized moisture can enter (a so-called electrospray effect).

  Further, according to the ionic wind type liquid vaporizer 7 (air conditioner 1) according to the present embodiment, since the ground electrode section 31 is formed of a porous material, the functional liquid can be appropriately held. . Here, if all the functional liquids are vaporized, the ground electrode portion 31 has an electrical insulating property and thus does not function as an electrode. That is, the discharge closed circuit is disconnected, and the corona discharge stops. That is, corona discharge is automatically prohibited due to the complete consumption of the functional liquid. This can ensure the safety of the device when the functional fluid is depleted. Further, a device for detecting the depletion of the functional fluid and a device for stopping the power supply unit 21 can be omitted.

  Further, since the functional liquid is supplied from the supply unit 23 to the ground electrode unit 31, the ion wind type liquid vaporizer 7 can be continuously operated for a long period of time. Further, for example, when it is desired to change the functional component of the functional liquid held by the ground electrode unit 31, the functional liquid stored in the supply unit 23 may be changed. Thus, the functional components of the functional liquid can be easily changed. In addition, the ion wind type liquid vaporizer 7 according to the present embodiment includes one storage tank 40, but the present invention is not limited to this. For example, a plurality of storage tanks 40 may be provided, and a chlorine-based functional liquid, a functional liquid mixed with an aromatic component, and a functional liquid mixed with a deodorant component may be stored in separate storage tanks 40.

  Note that the ion wind type liquid vaporizer 7 according to the present embodiment generates a negative corona, but the present invention is not limited to this. For example, a positive corona may be generated using the discharge electrode 33 as a positive electrode. In addition, although the front-end | tip part 33a of the discharge electrode part 33 of the ion wind type liquid vaporization apparatus 7 which concerns on this embodiment penetrated the opening part 34, this invention is not limited to this. For example, the tip portion 33a of the discharge electrode portion 33 may be arranged near the upper side of the opening 34 (near the downstream side in the flow direction).

  In addition, the number and the opening area (diameter) of the openings 34 of the ion wind type liquid vaporizer 7 are appropriately determined based on the amount of ion wind, the size of the charging area EA, the size (area) of the ground electrode section 31, and the like. Is set. The shape of each opening 34 is preferably the above-described circular shape, but may be, for example, a regular polygonal shape. In the ion wind type liquid vaporizer 7 according to the present embodiment, the plurality of openings 34 are arranged in a line, but the present invention is not limited to this. For example, a plurality of rows of the plurality of openings 34 may be formed in the left-right direction, and the plurality of openings 34 may be arranged in a lattice or a staggered shape when viewed from a plane. In this case, a plurality of support substrates 32 are also arranged corresponding to the rows of the openings 34, and the discharge electrode portions 33 are arranged corresponding to the respective openings 34.

  Note that the ion wind type liquid vaporizer 7 according to the present embodiment always irradiates ultraviolet rays from the ultraviolet irradiator 22 until stopped, but the present invention is not limited to this. For example, the ultraviolet irradiation unit 22 may emit ultraviolet light intermittently, or may emit ultraviolet light only when the operation of the air conditioner 1 is started. Thus, power consumption can be reduced.

  Note that, as described above, the ion wind type liquid vaporizer 7 according to the present embodiment employs the negative charge system. In the negative charging method, the discharge current flows more easily than in the positive charging method (about twice the current flows under the same conditions), so that the wind speed of the ion wind can be improved. In addition, the negative charging method has a lower frequency of abnormal discharge and a smaller spark sound at the time of the abnormal discharge than the positive charging method. Therefore, noise during corona discharge can be suppressed.

  The technology of the present invention can be suitably used for an air conditioner such as an air purifier.

REFERENCE SIGNS LIST 1 air conditioner 2 housing 3 intake port 4 exhaust port 7 ion wind type liquid vaporizer 21 power supply section 22 ultraviolet irradiation section 23 supply section 25 control section 31 ground electrode section 33 discharge electrode section 33a tip section 34 opening section 35 edge section

Claims (7)

A ground electrode portion formed in a plate shape by a porous material capable of absorbing and holding a functional liquid having conductivity,
A needle-shaped discharge electrode portion extending in a direction crossing the ground electrode portion,
A power supply unit that generates a corona discharge by applying a voltage between the ground electrode unit and the discharge electrode unit,
A supply unit configured to be able to store the functional liquid to be supplied to the ground electrode unit ,
The ground electrode section has an opening through which ion wind generated by the corona discharge passes,
An ion wind type liquid vaporizer, wherein a tip portion of the discharge electrode portion is arranged corresponding to the opening and is arranged at a position where it does not contact an edge of the opening.   The ion wind type liquid vaporizer according to claim 1, wherein a tip portion of the discharge electrode portion penetrates the opening from a downstream side in a flow direction of the ion wind toward an upstream side.   The ionic wind type liquid vaporizer according to claim 1, wherein the ground electrode portion is formed of a porous material having electrical insulation.   The ionic wind type liquid vaporizer according to any one of claims 1 to 3, further comprising a control unit that controls the power supply unit to adjust the applied voltage. The ion wind type liquid vaporizer according to any one of claims 1 to 4 , further comprising an ultraviolet irradiation unit that irradiates ultraviolet rays to the ground electrode unit. The ionic wind type liquid vaporizer according to any one of claims 1 to 5 , wherein the ground electrode section holds the functional liquid containing a chlorine component or vitamin C. An air conditioner comprising the ionic wind type liquid vaporizer according to any one of claims 1 to 6 ,
The ion wind type liquid vaporizer is provided inside a casing having an intake port and an exhaust port, and generates the ion wind in which ions are contained in air sucked into the casing from the intake port. An air conditioner, wherein an ion wind is blown out of the housing from the exhaust port.

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