Air cleaner

Abstract

To curb an increase in the product size of an air cleaner having a function of reducing an indoor odor.SOLUTION: A high-voltage unit 5 provided in an air cleaner 50 comprises a discharge electrode 16, a counter electrode 17, and covers 14 and 15 for covering the discharge electrode 16 and the counter electrode 17. A voltage is applied between the discharge electrode 16 and the counter electrode 17 so that dust can be captured from an airflow passing between the discharge electrode 16 and the counter electrode 17. The covers 14 and 15 are at least partially composed of a resin containing an odor removal agent.SELECTED DRAWING: Figure 2

Description

[Technical Field]

[0001] The present disclosure relates to an air purifying device that purifies indoor air. [Background technology]

[0002] Air purifiers are widely used to purify the air inside buildings. One type of air purifier that removes dust is an electric air purifier. This device removes airborne dust using electrostatic force and is composed of a charging unit that charges airborne particles using corona discharge and a dust collecting unit that uses Coulomb force to attach the charged dust to a dust collecting plate. An electric air purifier is disclosed, for example, in Patent Document 1.

[0003] Another type of air purifier is a mechanical dust collection type air purifier. This type of air purifier passes air containing fine particles through a very fine filter called a HEPA (High Efficiency Particular Air filter), mechanically filtering out the fine particles. An air purifier using a HEPA is disclosed, for example, in Patent Document 2. On the other hand, one type of odor removal system is a honeycomb-structured deodorizing filter in which a deodorizing agent is attached to activated carbon or ceramic. Odors are removed by passing air through the deodorizing filter. Patent Document 2 discloses an air purifier equipped with a deodorizing section that has a deodorizing effect together with a HEPA. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Application Publication No. 4-18944 [Patent Document 2] Patent No. 5835288 Summary of the Invention [Problem to be solved by the invention]

[0005] To provide an electric air cleaning device with odor removal functions, such as deodorization and deodorization, it is necessary to provide an odor removal mechanism in addition to a high-voltage unit that applies a high voltage to collect dust. This increases the product size of the air cleaning device. Therefore, the present disclosure aims to suppress the increase in product size of an air cleaning device that has the function of reducing indoor odors. [Means for solving the problem]

[0006] The air purifying device according to the present disclosure includes a high-voltage unit having a first electrode and a second electrode, and capturing dust particles from the airflow flowing between the first electrode and the second electrode when a voltage is applied between the first electrode and the second electrode. The high-voltage unit further includes a cover that covers the first electrode and the second electrode, at least a portion of which is made of a resin containing a deodorizing agent. [Effects of the Invention]

[0007] According to the air purifying device of the present disclosure, it is possible to prevent an increase in the product size of an air purifying device that has the function of reducing indoor odors. [Brief explanation of the drawings]

[0008] [Figure 1] Schematic diagram showing an air purifying device 50 according to embodiment 1. [Figure 2] Assembly schematic diagram of the high voltage unit 5 provided in the air purifying device 50 [Figure 3] Schematic diagram of high voltage unit 5 [Figure 4] FIG. 1 is a cross-sectional view showing an air purifying device 50 according to a first embodiment, in a state where the device is installed on a ceiling. [Figure 5] 1 is a top view showing an air cleaning device 50. [Figure 6] 1 is a bottom view showing the air cleaning device 50. [Figure 7] FIG. 1 is a perspective view showing a fan casing 4 provided in an air purifying device 50. [Figure 8] A side view showing the air cleaning device 50 [Figure 9] FIG. 1 is a side view showing a state in which a decorative grill provided in the air purifying device 50 is open. [Figure 10] FIG. 1 is a perspective view of the air purifying device 50 as seen from the bottom side, with the decorative grill 6 and the high-voltage unit 5 removed. [Figure 11] 1 is a perspective view of the decorative grille 6 as seen from the opposing surface 28 side. [Figure 12] FIG. 1 is a perspective view showing a dust filter 23 provided in an air purifying device 50. [Figure 13] FIG. 1 is a perspective view showing a high-voltage unit 5. [Figure 14] FIG. 14 is a perspective view showing the high-voltage unit 5, seen in a direction different from that shown in FIG. 13. [Figure 15] 10 is a perspective view showing a method for removing the deodorizing filter cover 21 from the high-voltage unit 5. [Figure 16] Cross-sectional view showing the high voltage unit 5 [Figure 17] Enlarged view of part of the high voltage unit 5 [Figure 18] FIG. 1 is a perspective view showing the high-voltage unit 5 with the deodorizing filter cover 21 removed. [Figure 19] FIG. 1 is a perspective view showing the high-voltage unit 5 with the deodorizing filter 12 removed. [Figure 20] A top view showing the high voltage unit 5 with the deodorizing filter 12 removed. [Figure 21] FIG. 1 is a perspective view showing the high-voltage unit 5 with the discharge unit upper cover 14 removed. [Figure 22] FIG. 1 is a perspective view showing an attachment structure in which a discharge electrode 16 is attached to a lower cover 15 of a discharge section of a high-voltage unit 5. [Figure 23] 17 is a cross-sectional view showing a high-voltage unit 5 at a location different from that shown in FIG. 16; [Figure 24] 11 is a perspective view of the air purifying device 50 from which the decorative grill 6 and the high-voltage unit 5 have been removed, as seen from the bottom side, in a direction different from that of FIG. 10. [Figure 25] FIG. 1 is a perspective view showing a high-voltage unit terminal block 22 provided in the main body 1 of the air purifying device 50. [Figure 26] 1 is a partially enlarged cross-sectional view of a connection portion between the high-voltage unit 5 and the high-voltage unit terminal block 22. [Figure 27] FIG. 10 is a perspective view showing the power supply terminal 22a of the high-voltage unit terminal block 22. DETAILED DESCRIPTION OF THE INVENTION

[0009] Hereinafter, embodiments of the present disclosure will be described in detail with reference to the drawings. In the drawings and the following description, identical or substantially identical components are designated by the same reference numerals, and descriptions of components designated by the same reference numerals will not be repeated.

[0010] Embodiment 1 1 is a schematic diagram showing an air purifying device 50 according to a first embodiment of the present disclosure. Air purifying device 50 includes a main body 1 having an inlet 27a and an outlet 27b, a blower 2 provided inside main body 1 and generating an airflow from inlet 27a toward outlet 27b, and a high-voltage unit 5 provided in a flow path within main body 1 through which the airflow flows. High-voltage unit 5 is particularly installed in the flow path between blower 2 and outlet 27b.

[0011] Air purifier 50 is installed on the back side of ceiling 26. The undersides of inlet 27a and outlet 27b are covered by decorative grill 6. Inlet 27a and outlet 27b are separated by ribs 30. Air purifier 50 uses blower 2 to draw in indoor air through the gap between ceiling 26 on the inlet 27a side and decorative grill 6, passes the air through high-voltage unit 5 to collect and remove dust, and exhausts the air into the room through the gap between ceiling 26 and decorative grill 6 at outlet 27b. Blower 2 has fan 3 and motor 7 that drives fan 3. Airflow is generated when motor 7 rotates fan 3.

[0012] The high-voltage unit 5 is detachably attached to the air purifier 50, and when attached to the air purifier 50, it is located downstream of the blower 2 in the air flow. FIG. 2 is an assembly diagram of the high-voltage unit 5, and FIG. 3 is an exploded diagram of the high-voltage unit 5. The high-voltage unit 5 includes a discharge electrode 16 and a counter electrode 17, which are arranged opposite each other. The discharge electrode 16 is wire-shaped, and the counter electrode 17 is plate-shaped. When a voltage is applied between the discharge electrode 16 and the counter electrode 17, a discharge, such as a corona discharge, occurs between the electrodes. Dust particles, which are suspended particles in the air flowing between the discharge electrode 16 and the counter electrode 17, become charged by the discharge and adhere to the discharge electrode 16 or the counter electrode 17. In this way, the high-voltage unit 5 has the function of capturing dust particles in the air flow.

[0013] The high-voltage unit 5 also includes a cover that covers the discharge electrode 16 and the counter electrode 17 and houses them inside. The discharge electrode 16, the counter electrode 17, and the cover that covers them are referred to as the discharge unit 13. Airflow from the blower 2 can flow inside the cover, and holes are provided on the surface of the cover to allow the airflow to pass through. The cover consists of a discharge unit upper cover 14 and a discharge unit lower cover 15. The discharge electrode 16 and the counter electrode 17 are fixed to the discharge unit lower cover 15, and the discharge unit upper cover 14 is fitted with the discharge unit lower cover 15 so as to cover the discharge electrode 16 and the counter electrode 17. The discharge unit upper cover 14 and the discharge unit lower cover 15 are made of parts that are integrally molded from resin containing a deodorizing agent.

[0014] The deodorizer contains at least one of a deodorizing component that captures odor-causing odor components and removes them from the air, and a deodorizing component that chemically acts on odor-causing odor components in the air to eliminate the odor. Therefore, the deodorizer contained in the cover removes odors from the airflow, and further, dust is captured from the airflow within the cover by discharge between the electrodes.

[0015] Although both the discharge unit upper cover 14 and the discharge unit lower cover 15 are integrally molded resin components, as long as the odor can be reduced to the desired level, the deodorizer may be contained in only one of the discharge unit upper cover 14 and the discharge unit lower cover 15. In other words, a part of the cover may be a component containing the deodorizer.

[0016] The high-voltage unit 5 further includes a deodorizing filter 12 and a deodorizing filter cover 21. The high-voltage unit 5 is attached to the air purifier 50 so that the deodorizing filter 12 is located downstream of the discharge unit 13 in the airflow direction. The deodorizing filter 12 therefore deodorizes the air discharged from the discharge unit 13 and discharges it toward the outlet 27b. The deodorizing filter cover 21 is attached to the discharge unit lower cover 15 and holds the deodorizing filter 12 so as to cover it. However, the deodorizing filter 12 may also be located upstream of the discharge unit 13 in the airflow direction.

[0017] The high-voltage unit 5 can be removed from the air purifier 50, and particles adhering to the inside of the discharge unit can be washed with water. To prevent the discharge electrode 16 and the counter electrode 17 from being touched and deformed by hands during washing, the discharge electrode 16 and the counter electrode 17 are washed while housed in their covers. The discharge unit upper cover 14 and the discharge unit lower cover 15 each have a lattice-shaped hole for airflow, allowing airflow to pass through during air purification and allowing water to flow through the interior during cleaning. In addition, the deodorizing filter 12 and the deodorizing filter cover 21 can be removed from the discharge unit 13 so that the discharge unit 13 and the deodorizing filter 12 can be washed separately with water.

[0018] Next, a more specific configuration of the air purifying device 50 according to the first embodiment will be described.

[0019] FIG. 4 is a cross-sectional view showing an installation state of air purifying device 50 according to embodiment 1. Air purifying device 50 is a circulation fan that is attached to a ceiling or wall in a room and circulates air in the room. FIG. 4 shows an example in which air purifying device 50 is attached to ceiling 26, which is a horizontal installation surface. If the installation surface is a vertical wall, air purifying device 50 is installed in a position tilted by 90° from the example shown in FIG. 4. Note that terms indicating directions used in the following description are based on the directions in the installation position shown in FIG. 4.

[0020] The air purifying device 50 includes a main body 1, a blower 2, a decorative grill 6, and a high-voltage unit 5. Fig. 5 is a top view of the air purifying device 50. Fig. 6 is a bottom view of the air purifying device 50 seen from below, with the decorative grill 6 removed.

[0021] The main body 1 has a box-like shape and is made of resin. As shown in FIG. 6 , an opening 27 is formed on one side of the main body 1. The opening 27 is divided into an inlet 27a for drawing air into the main body 1 and an outlet 27b for expelling air from the main body 1. A flow path connecting the inlet 27a and the outlet 27b is formed inside the main body 1, generating an airflow as shown by the arrows in FIG. 4 . The main body 1 is formed with a flange 1a that protrudes around the opening 27. In other words, the flange 1a protrudes parallel to the ceiling 26, which is the mounting surface. The air purifier 50 includes a terminal block 8 with a rotatable structure that can be easily connected to an external power supply cable, and a control circuit 10 provided in a circuit housing case 9. The terminal block 8 and the control circuit 10 are located on the top of the main body 1.

[0022] Blower 2 is a multi-blade blower and is installed in a flow path formed inside main body 1. Blower 2 generates an airflow in the flow path from inlet 27a to outlet 27b as fan 3 coupled to the drive shaft of motor 7 rotates. Blower 2 includes fan casing 4 that houses fan 3. Figure 7 is a perspective view of fan casing 4 in embodiment 1. Fan casing 4 is formed with opening 4d for taking in air. Fan casing 4 further includes fixing portion 4a, hook portion 4b, and casing rib 4c, which will be described later.

[0023] FIG. 8 is a side view of the air purifying device 50. The decorative grill 6 is a plate-shaped member that faces the opening 27 and the flange 1a. The decorative grill 6 is positioned away from the opening 27 and the flange 1a. When closed, the decorative grill 6 improves the design of the air purifying device 50 and prevents foreign matter from getting into the fan 3. The decorative grill 6 is an integrally molded resin component. The outer surface 29 of the decorative grill 6, which is the back side of the opposing surface 28 that faces the opening 27 and the flange 1a, is flat.

[0024] As shown in Fig. 8, the decorative grill 6 is fixed to the main body 1 by fitting the shaft 6a and claws 6b formed on the decorative grill 6 into the bearing portion 1d and claws 1e formed on the main body 1, respectively. Fig. 9 is a diagram showing the decorative grill 6 in an open state. By removing the claws 6b of the decorative grill 6 from the claws 1e of the main body 1, the decorative grill 6 becomes rotatable around the shaft 6a and bearing portion 1d as shown in Fig. 9, and the decorative grill 6 can be opened, exposing the structure shown in Fig. 6 to the ceiling 26.

[0025] Returning to Figure 4, air purifying device 50 is provided with ribs 30 that divide opening 27 and the space between flange 1a and decorative grille 6 into a first region 31 and a second region 32 when viewed from a direction perpendicular to opening 27. First region 31 faces intake port 27a of main body 1. Second region 32 faces discharge port 27b of main body 1.

[0026] FIG. 10 is a perspective view of the air purifier 50 from below, showing the state in which the decorative grille 6 and the high-voltage unit 5 have been removed. FIG. 11 is a perspective view of the decorative grille 6 as seen from the opposing surface 28. The rib 30 is formed by combining a flange rib 1f (see FIG. 10) formed on the flange 1a of the main body 1, a grill rib 6c (see FIG. 11) formed on the opposing surface 28 of the decorative grille 6, and a casing rib 4c (see FIG. 10) formed on the fan casing 4. More specifically, the grill rib 6c and the casing rib 4c overlap in the height direction in the region facing the opening 27, and the flange ribs 1f are provided on both sides of the overlapping rib 6c, thereby forming the rib 30 that divides the space between the opening 27 and the flange 1a and the decorative grille 6 into a first region 31 and a second region 32. With this configuration, the rib 30 extends from one end of the flange 1a (or the decorative grille 6) to the opposite end. As a result, both the first region 31 and the second region 32 include at least the end surface region of the flange 1a (or the decorative grille 6).

[0027] In the air purifying device 50, when the blower 2 is operated and the fan 3 rotates, air is taken into the interior of the main body 1 through the inlet 27a and discharged from the outlet 27b through a flow path inside the main body 1. Inside the main body 1, air is sucked into the first region 31 from between the flange 1a and the decorative grille 6, and air is blown out from the second region 32 through the gap between the flange 1a and the decorative grille 6. In other words, between the flange 1a and the decorative grille 6, the outer peripheral portion of the first region 31 serves as an inlet for sucking in air, and the outer peripheral portion of the second region 32 serves as an outlet for blowing out air. Therefore, in the air purifying device 50, the inlet and outlet are adjacent to each other with the rib 30 sandwiched therebetween.

[0028] The air purifying device 50 is fixed to the ceiling 26 with fixing screws such as wood screws at four or more locations, using the fixing screw mounting portions 1b (see FIG. 6) provided at eight locations on the flange 1a.

[0029] Air purifying device 50 includes dust filter 23. As shown in Figures 6 and 10, dust filter 23 is installed to cover air inlet 27a of main body 1 and captures dust from the air drawn in through the air inlet. The air from which dust has been removed by dust filter 23 flows into blower 2.

[0030] FIG. 12 is a perspective view of dust filter 23. Dust filter 23 has a lattice structure, with a filter stretched over the openings of the lattice. The lattice portion of dust filter 23 is provided with fixing portions 23a, claw portions 23b, and grip portions 23c. Fan casing 4 is formed with fixing portions 4a and claw hook portions 4b for fixing dust filter 23 (see FIG. 10). Dust filter 23 is fixed to fan casing 4 by fixing and fitting fixing portions 23a and claw portions 23b of dust filter 23 to fixing portions 4a and claw hook portions 4b, respectively. Dust filter 23 is formed with grip portions 23c that can be gripped when attaching or detaching.

[0031] 13 and 14 are perspective views of the high-voltage unit 5 viewed from different directions. FIG. 15 is a perspective view showing a method for removing the deodorizing filter cover 21 of the high-voltage unit 5. FIG. 16 is a cross-sectional view of the high-voltage unit 5 for explaining the fixing structure at portion A shown in FIG. 13, taken along the plane defined by dotted line S1 in FIG. 14. FIG. 17 is a partial enlarged view of portion B shown in FIG. 13. FIG. 18 is a perspective view showing the high-voltage unit 5 after the deodorizing filter cover 21 has been removed. FIG. 19 is a perspective view showing the high-voltage unit 5 after the deodorizing filter 12 has been removed from the state shown in FIG. 18. FIG. 20 is a top view showing the high-voltage unit 5 as seen from above in FIG. 19. FIG. 21 is a perspective view showing the high-voltage unit 5 after the discharge unit upper cover 14 has been removed from the state shown in FIG. 19. FIG. 22 is a perspective view showing an attachment structure in which the discharge electrode 16 is attached to the discharge unit lower cover 15 of the high-voltage unit 5. Fig. 23 is a cross-sectional view of the high-voltage unit 5, taken along the plane defined by dotted line S2 in Fig. 14. Fig. 24 is a perspective view of the air purifying device 50 viewed from the underside in a direction different from that of Fig. 10, showing a state in which the decorative grill 6 and high-voltage unit 5 have been removed. Fig. 25 is a perspective view of the high-voltage unit terminal block 22. Fig. 26 is a partially enlarged cross-sectional view of the connection between the high-voltage unit 5 and the high-voltage unit terminal block 22. Fig. 27 is a perspective view of the power supply terminal 22a of the high-voltage unit terminal block 22.

[0032] High voltage unit 5 is provided in the air flow path downstream of blower 2. More specifically, high voltage unit 5 is provided in main body 1 at outlet 27b, as shown in Figures 4 and 6.

[0033] The high-voltage unit 5 includes a discharge unit 13, a deodorizing filter 12, and a deodorizing filter cover 21. The discharge unit 13 has a discharge unit upper cover 14, a discharge unit lower cover 15, a discharge electrode 16, a counter electrode 17, a right discharge electrode hooking part 18, a left discharge electrode hooking part 19, and a spring 20. The deodorizing filter 12 and the deodorizing filter cover 21 that holds the deodorizing filter 12 are attached to the discharge unit 13 so as to be positioned on the discharge port 27b side. Figures 13 and 14 show the high-voltage unit 5 removed from the air purifying device 50, with the discharge unit 13 facing downward and the deodorizing filter 12 facing upward.

[0034] The deodorizing filter cover 21 has a claw 21a (see FIG. 17), a fixing portion 21b (see FIG. 15), and a fixing portion 21c (see FIG. 16). The claw 21a of the deodorizing filter cover 21 is fitted into the claw 14a of the discharge unit upper cover 14, and the fixing portions 21b and 21c of the deodorizing filter cover 21 are fitted into the fixing portions 14b and 14c of the discharge unit upper cover 14, respectively, to fix the deodorizing filter cover 21. In this way, the deodorizing filter cover 21 is attached to the high-voltage unit 5 as shown in FIG. 14. To remove the deodorizing filter cover 21 from the high-voltage unit 5, the worker disengages the claws 14a and 21b and slides the cover in a direction perpendicular to the airflow direction (the direction of the arrow in FIG. 15). In this way, the deodorizing filter cover 21 can be easily attached and detached.

[0035] As shown in Figure 18, the deodorizing filter 12 is placed on the discharge unit upper cover 14 with the four corners of the deodorizing filter 12 held by the discharge unit upper cover 14. Movement of the deodorizing filter 12 in any direction other than the up and down direction in the figure is restricted, and the deodorizing filter 12 can be removed in the upward direction (the direction in which air flows out when the high-voltage unit 5 is attached to the air purifier 50). Figure 19 shows the discharge unit 13 after the deodorizing filter 12 has been removed.

[0036] Here, the discharge unit upper cover 14, discharge unit lower cover 15, discharge electrode right hook part 18, and discharge electrode left hook part 19 of the discharge unit 13 are parts molded from resin containing a deodorizing agent, and have the function of eliminating odors when they come into contact with odor-containing air. During molding, a material containing a deodorizing or odor-eliminating component is mixed into the resin material and then melted, so the resin-molded parts have the deodorizing agent kneaded into the resin. To facilitate the flow of air in and out and to prevent fingers from touching the discharge electrode 16, the surfaces of the discharge unit upper cover 14 and discharge unit lower cover 15 facing the flow path are molded into a lattice shape. The lattice shape increases the area that air comes into contact with, resulting in efficient odor removal.

[0037] The deodorizing filter 12 has a honeycomb structure in which an adsorbent is impregnated into activated carbon or ceramic, for example. If the resin constituting the discharge section 13 contains the same deodorizing components as those constituting the deodorizing filter 12, the deodorizing efficiency will increase due to the deodorizing effect of the deodorizing filter 12 in addition to the discharge section 13. On the other hand, if the resin constituting the discharge section 13 contains a deodorizer that removes odor components different from those removed by the deodorizing filter 12, it will be possible to increase the types of odors that can be removed. For example, a chemical adsorption type deodorizer can be used as a deodorizer contained in the resin of the discharge section 13.

[0038] Furthermore, the deodorizer may be contained not only in the discharge unit 13 but also in resin molded parts that come into contact with the airflow within the air purifier 50. For example, the deodorizer may be contained in at least one of the resin molded parts: the portion that constitutes the wall surface of the flow path within the main body 1 (including the entire main body 1), the fan 3, the fan casing 4, the decorative grille 6, and the dust filter 23. The deodorizer contained in this resin molded part may have the same components as the deodorizer contained in the cover of the discharge unit 13, or it may have a different component.

[0039] The discharge unit 13 and the deodorizing filter 12 can be washed with water to wash away the removed odor, allowing them to be reused.

[0040] The discharge electrode 16 is a wire-shaped, strong electrical conductor such as tungsten, and the counter electrode 17 is an electrical conductor such as stainless steel. The discharge electrode 16 and counter electrode 17 are made of a material that is resistant to rust when exposed to water, so that dust can be washed away with water. The discharge unit 13 is structured so that the counter electrode 17 is positioned to sandwich the discharge electrode 16 from both sides, as shown in Figure 23. As shown in Figure 22, the discharge electrode 16 is formed by hooking a single wire onto a discharge electrode hook 15a provided on the discharge unit lower cover 15 and pulling it around. Both ends of the wire are fixed in a tensioned state by respective springs 20, preventing sagging of the discharge electrode 16. The counter electrode 17 is grounded and a voltage is applied to the discharge electrode 16. A voltage sufficient to generate a discharge between the discharge electrode 16 and the counter electrode 17 is applied to the discharge electrode 16.

[0041] 24, 25, and 26, power is supplied to the high-voltage unit 5 when the power supply part 5a of the high-voltage unit 5 comes into contact with the power supply terminal 22a of the high-voltage unit terminal block 22 provided inside the main body 1. Since the power supply terminal 22a must be designed to always come into contact with the power supply part 5a, it is made of a material and has a shape that has spring properties, and is designed to prevent a state in which the power supply part 5a and the power supply terminal 22a are not in contact due to variations in parts or insertion.

[0042] The power supply terminal 22a is connected to a step-up transformer provided in the air purifying device 50. The step-up transformer converts the voltage from the external power supply line into a higher voltage, and the converted high voltage is supplied to the high voltage unit 5.

[0043] The fixing portion 5b (see FIG. 14) of the high-voltage unit 5 is hooked onto the high-voltage unit fixing portion 1c of the main body 1, and the hooking claws 5c (see FIG. 13) of the high-voltage unit 5 are fitted into the hook portions 22b of the high-voltage unit terminal block 22, thereby fixing the high-voltage unit to the air purifying device 50. The high-voltage unit 5 can be easily attached and detached by holding the handle portion 5d (see FIG. 14) and pulling out and inserting it.

[0044] As described above, air purifier 50 includes high-voltage unit 5, which has first and second electrodes, exemplified by discharge electrode 16 and counter electrode 17, and captures dust particles from the airflow when a voltage is applied between the two electrodes. High-voltage unit 5 has a cover that covers the first and second electrodes, at least a portion of which is made of a resin containing a deodorizing agent. By providing the cover of high-voltage unit 5, which has a dust-collecting function, with an odor-removing function, air purifier 50 with the function of reducing indoor odors can be realized without increasing the product size.

[0045] The air purifying device 50 may further include a deodorizing filter 12 in the airflow path, which may enhance the deodorizing effect.

[0046] Incidentally, the greater the amount of contact between the air and the deodorizing filter 12, the better the deodorizing efficiency, so to enhance the deodorizing effect, it is necessary to make the mesh of the deodorizing filter 12, for example, a honeycomb structure, finer. However, making the mesh finer increases the pressure loss of the air flow, and if the air flow rate does not reach the desired value, it is necessary to increase the blowing capacity of the blower 2. To achieve this, it is necessary to employ a larger blower 2 or increase the output (rotation speed) of the blower 2. This leads to problems such as an increase in product size or increased operating noise (i.e., noise).

[0047] Here, the deodorizing agent contained in the cover of the high-voltage unit 5 is one that removes the same odors as those deodorized by the deodorizing filter 12. For example, if the cover of the high-voltage unit 5 contains the same deodorizing component as the deodorizing filter 12, the high-voltage unit 5 will assist the deodorizing function of the deodorizing filter 12, and the deodorizing efficiency of the deodorizing filter 12 itself can be reduced. In other words, the honeycomb structure of the deodorizing filter 12 can be made coarser, thereby reducing pressure loss caused by the deodorizing filter 12.

[0048] On the other hand, if the deodorizer contained in the cover of the high voltage unit 5 is one that removes odors different from those deodorized by the deodorizing filter 12, it is possible to increase the types of odors that can be deodorized.

[0049] Furthermore, if a member that is different from the cover of the high voltage unit 5 and that comes into contact with the air flow is made of a resin that contains a deodorizing agent, the odor removal effect will be further improved.

[0050] The embodiments disclosed herein are merely illustrative, and modifications, omissions, or additions of components are possible within the scope of the claims. [Explanation of symbols]

[0051] 1 main body, 1a flange, 1b fixing screw mounting portion, 1c high voltage unit fixing portion, 1d bearing portion, 1e claw, 1f flange rib, 2 blower (multi-blade blower), 3 fan, 4 fan casing, 4a fixing portion, 4b claw hook portion, 4c casing rib, 4d opening 5 high voltage unit, 5a power supply portion, 5b fixing portion, 5c hook claw, 5d handle portion, 6 decorative grill, 6a shaft, 6b claw, 6c grill rib, 7 motor, 8 terminal block, 9 circuit storage case, 10 control circuit, 12 deodorizing filter, 13 discharge portion, 14 discharge portion upper cover, 14a claw, 14b, 14c fixing portion, 15 discharge portion lower cover, 15a discharge electrode hook portion, 16 discharge electrode, 17 counter electrode, 18 discharge electrode hook right part, 19 Left part for hooking the discharge electrode, 20 spring, 21 deodorizing filter cover, 21a claw, 21b, 21c fixing part, 22 high voltage unit terminal block, 22a power supply terminal, 22b hook part, 23 dust filter, 23a fixing part, 23b claw part, 23c grip part, 26 ceiling, 27 opening, 27a intake port, 27b discharge port, 28 opposing surface, 29 outer surface, 30 rib, 31 first area, 32 second area, 50 air purifier.

Claims

1. a main body having an air inlet and an air outlet; a blower provided inside the main body and configured to generate an airflow from the intake port toward the discharge port; and A high-voltage unit provided between the blower and the outlet Equipped with the high-voltage unit has a first electrode, a second electrode, and a cover that covers the first electrode and the second electrode, and captures dust from the airflow that flows between the first electrode and the second electrode by applying a voltage between the first electrode and the second electrode; At least a portion of the cover is made of a resin containing a deodorizing agent.

2. The air purifying device according to claim 1 , further comprising a deodorizing filter provided in a flow path of the air flow in the main body.

3. The air purifying device according to claim 2 , wherein the deodorizer contained in the cover of the high-voltage unit removes the same odor as that deodorized by the deodorizing filter.

4. The air purifying device according to claim 2 , wherein the deodorizer contained in the cover of the high-voltage unit removes odors different from odors deodorized by the deodorizing filter.

5. 5. The air purifying device according to claim 1, wherein a member different from the cover and in contact with the air flow is made of a resin containing a deodorizing agent.

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